// gsh - Go lang based Shell
// (c) 2020 ITS more Co., Ltd.
// 2020-0807 created by SatoxITS (sato@its-more.jp)
package main // gsh main
//
Imported packages //
Packages
import (
"fmt" //
fmt
"strings" //
strings
"strconv" //
strconv
"sort" //
sort
"time" //
time
"bufio" //
bufio
"io/ioutil" //
ioutil
"os" //
os
"syscall" //
syscall
"plugin" //
plugin
"net" //
net
"net/http" //
http
//"html" //
html
"path/filepath" //
filepath
"go/types" //
types
"go/token" //
token
"encoding/base64" //
base64
"unicode/utf8" //
utf8
//"gshdata" // gshell's logo and source code
"hash/crc32" //
crc32
)
const (
NAME = "gsh"
VERSION = "0.3.0"
DATE = "2020-09-03"
AUTHOR = "SatoxITS(^-^)/"
)
var (
GSH_HOME = ".gsh" // under home directory
GSH_PORT = 9999
MaxStreamSize = int64(128*1024*1024*1024) // 128GiB is too large?
PROMPT = "> "
LINESIZE = (8*1024)
PATHSEP = ":" // should be ";" in Windows
DIRSEP = "/" // canbe \ in Windows
)
// -xX logging control
// --A-- all
// --I-- info.
// --D-- debug
// --T-- time and resource usage
// --W-- warning
// --E-- error
// --F-- fatal error
// --Xn- network
//
Structures
type GCommandHistory struct {
StartAt time.Time // command line execution started at
EndAt time.Time // command line execution ended at
ResCode int // exit code of (external command)
CmdError error // error string
OutData *os.File // output of the command
FoundFile []string // output - result of ufind
Rusagev [2]syscall.Rusage // Resource consumption, CPU time or so
CmdId int // maybe with identified with arguments or impact
// redireciton commands should not be the CmdId
WorkDir string // working directory at start
WorkDirX int // index in ChdirHistory
CmdLine string // command line
}
type GChdirHistory struct {
Dir string
MovedAt time.Time
CmdIndex int
}
type CmdMode struct {
BackGround bool
}
type Event struct {
when time.Time
event int
evarg int64
CmdIndex int
}
var CmdIndex int
var Events []Event
type PluginInfo struct {
Spec *plugin.Plugin
Addr plugin.Symbol
Name string // maybe relative
Path string // this is in Plugin but hidden
}
type GServer struct {
host string
port string
}
//
Digest
const ( // SumType
SUM_ITEMS = 0x000001 // items count
SUM_SIZE = 0x000002 // data length (simplly added)
SUM_SIZEHASH = 0x000004 // data length (hashed sequence)
SUM_DATEHASH = 0x000008 // date of data (hashed sequence)
// also envelope attributes like time stamp can be a part of digest
// hashed value of sizes or mod-date of files will be useful to detect changes
SUM_WORDS = 0x000010 // word count is a kind of digest
SUM_LINES = 0x000020 // line count is a kind of digest
SUM_SUM64 = 0x000040 // simple add of bytes, useful for human too
SUM_SUM32_BITS = 0x000100 // the number of true bits
SUM_SUM32_2BYTE = 0x000200 // 16bits words
SUM_SUM32_4BYTE = 0x000400 // 32bits words
SUM_SUM32_8BYTE = 0x000800 // 64bits words
SUM_SUM16_BSD = 0x001000 // UNIXsum -sum -bsd
SUM_SUM16_SYSV = 0x002000 // UNIXsum -sum -sysv
SUM_UNIXFILE = 0x004000
SUM_CRCIEEE = 0x008000
)
type CheckSum struct {
Files int64 // the number of files (or data)
Size int64 // content size
Words int64 // word count
Lines int64 // line count
SumType int
Sum64 uint64
Crc32Table crc32.Table
Crc32Val uint32
Sum16 int
Ctime time.Time
Atime time.Time
Mtime time.Time
Start time.Time
Done time.Time
RusgAtStart [2]syscall.Rusage
RusgAtEnd [2]syscall.Rusage
}
type ValueStack [][]string
type GshContext struct {
StartDir string // the current directory at the start
GetLine string // gsh-getline command as a input line editor
ChdirHistory []GChdirHistory // the 1st entry is wd at the start
gshPA syscall.ProcAttr
CommandHistory []GCommandHistory
CmdCurrent GCommandHistory
BackGround bool
BackGroundJobs []int
LastRusage syscall.Rusage
GshHomeDir string
TerminalId int
CmdTrace bool // should be [map]
CmdTime bool // should be [map]
PluginFuncs []PluginInfo
iValues []string
iDelimiter string // field sepearater of print out
iFormat string // default print format (of integer)
iValStack ValueStack
LastServer GServer
RSERV string // [gsh://]host[:port]
RWD string // remote (target, there) working directory
lastCheckSum CheckSum
}
func nsleep(ns time.Duration){
time.Sleep(ns)
}
func usleep(ns time.Duration){
nsleep(ns*1000)
}
func msleep(ns time.Duration){
nsleep(ns*1000000)
}
func sleep(ns time.Duration){
nsleep(ns*1000000000)
}
func strBegins(str, pat string)(bool){
if len(pat) <= len(str){
yes := str[0:len(pat)] == pat
//fmt.Printf("--D-- strBegins(%v,%v)=%v\n",str,pat,yes)
return yes
}
//fmt.Printf("--D-- strBegins(%v,%v)=%v\n",str,pat,false)
return false
}
func isin(what string, list []string) bool {
for _, v := range list {
if v == what {
return true
}
}
return false
}
func isinX(what string,list[]string)(int){
for i,v := range list {
if v == what {
return i
}
}
return -1
}
func env(opts []string) {
env := os.Environ()
if isin("-s", opts){
sort.Slice(env, func(i,j int) bool {
return env[i] < env[j]
})
}
for _, v := range env {
fmt.Printf("%v\n",v)
}
}
// - rewriting should be context dependent
// - should postpone until the real point of evaluation
// - should rewrite only known notation of symobl
func scanInt(str string)(val int,leng int){
leng = -1
for i,ch := range str {
if '0' <= ch && ch <= '9' {
leng = i+1
}else{
break
}
}
if 0 < leng {
ival,_ := strconv.Atoi(str[0:leng])
return ival,leng
}else{
return 0,0
}
}
func substHistory(gshCtx *GshContext,str string,i int,rstr string)(leng int,rst string){
if len(str[i+1:]) == 0 {
return 0,rstr
}
hi := 0
histlen := len(gshCtx.CommandHistory)
if str[i+1] == '!' {
hi = histlen - 1
leng = 1
}else{
hi,leng = scanInt(str[i+1:])
if leng == 0 {
return 0,rstr
}
if hi < 0 {
hi = histlen + hi
}
}
if 0 <= hi && hi < histlen {
var ext byte
if 1 < len(str[i+leng:]) {
ext = str[i+leng:][1]
}
//fmt.Printf("--D-- %v(%c)\n",str[i+leng:],str[i+leng])
if ext == 'f' {
leng += 1
xlist := []string{}
list := gshCtx.CommandHistory[hi].FoundFile
for _,v := range list {
//list[i] = escapeWhiteSP(v)
xlist = append(xlist,escapeWhiteSP(v))
}
//rstr += strings.Join(list," ")
rstr += strings.Join(xlist," ")
}else
if ext == '@' || ext == 'd' {
// !N@ .. workdir at the start of the command
leng += 1
rstr += gshCtx.CommandHistory[hi].WorkDir
}else{
rstr += gshCtx.CommandHistory[hi].CmdLine
}
}else{
leng = 0
}
return leng,rstr
}
func escapeWhiteSP(str string)(string){
if len(str) == 0 {
return "\\z" // empty, to be ignored
}
rstr := ""
for _,ch := range str {
switch ch {
case '\\': rstr += "\\\\"
case ' ': rstr += "\\s"
case '\t': rstr += "\\t"
case '\r': rstr += "\\r"
case '\n': rstr += "\\n"
default: rstr += string(ch)
}
}
return rstr
}
func unescapeWhiteSP(str string)(string){ // strip original escapes
rstr := ""
for i := 0; i < len(str); i++ {
ch := str[i]
if ch == '\\' {
if i+1 < len(str) {
switch str[i+1] {
case 'z':
continue;
}
}
}
rstr += string(ch)
}
return rstr
}
func unescapeWhiteSPV(strv []string)([]string){ // strip original escapes
ustrv := []string{}
for _,v := range strv {
ustrv = append(ustrv,unescapeWhiteSP(v))
}
return ustrv
}
//
str-expansion
// - this should be a macro processor
func strsubst(gshCtx *GshContext,str string,histonly bool) string {
rbuff := []byte{}
if false {
//@@U Unicode should be cared as a character
return str
}
//rstr := ""
inEsc := 0 // escape characer mode
for i := 0; i < len(str); i++ {
//fmt.Printf("--D--Subst %v:%v\n",i,str[i:])
ch := str[i]
if inEsc == 0 {
if ch == '!' {
//leng,xrstr := substHistory(gshCtx,str,i,rstr)
leng,rs := substHistory(gshCtx,str,i,"")
if 0 < leng {
//_,rs := substHistory(gshCtx,str,i,"")
rbuff = append(rbuff,[]byte(rs)...)
i += leng
//rstr = xrstr
continue
}
}
switch ch {
case '\\': inEsc = '\\'; continue
//case '%': inEsc = '%'; continue
case '$':
}
}
switch inEsc {
case '\\':
switch ch {
case '\\': ch = '\\'
case 's': ch = ' '
case 't': ch = '\t'
case 'r': ch = '\r'
case 'n': ch = '\n'
case 'z': inEsc = 0; continue // empty, to be ignored
}
inEsc = 0
case '%':
switch {
case ch == '%': ch = '%'
case ch == 'T':
//rstr = rstr + time.Now().Format(time.Stamp)
rs := time.Now().Format(time.Stamp)
rbuff = append(rbuff,[]byte(rs)...)
inEsc = 0
continue;
default:
// postpone the interpretation
//rstr = rstr + "%" + string(ch)
rbuff = append(rbuff,ch)
inEsc = 0
continue;
}
inEsc = 0
}
//rstr = rstr + string(ch)
rbuff = append(rbuff,ch)
}
//fmt.Printf("--D--subst(%s)(%s)\n",str,string(rbuff))
return string(rbuff)
//return rstr
}
func showFileInfo(path string, opts []string) {
if isin("-l",opts) || isin("-ls",opts) {
fi, err := os.Stat(path)
if err != nil {
fmt.Printf("---------- ((%v))",err)
}else{
mod := fi.ModTime()
date := mod.Format(time.Stamp)
fmt.Printf("%v %8v %s ",fi.Mode(),fi.Size(),date)
}
}
fmt.Printf("%s",path)
if isin("-sp",opts) {
fmt.Printf(" ")
}else
if ! isin("-n",opts) {
fmt.Printf("\n")
}
}
func userHomeDir()(string,bool){
/*
homedir,_ = os.UserHomeDir() // not implemented in older Golang
*/
homedir,found := os.LookupEnv("HOME")
//fmt.Printf("--I-- HOME=%v(%v)\n",homedir,found)
if !found {
return "/tmp",found
}
return homedir,found
}
func toFullpath(path string) (fullpath string) {
if path[0] == '/' {
return path
}
pathv := strings.Split(path,DIRSEP)
switch {
case pathv[0] == ".":
pathv[0], _ = os.Getwd()
case pathv[0] == "..": // all ones should be interpreted
cwd, _ := os.Getwd()
ppathv := strings.Split(cwd,DIRSEP)
pathv[0] = strings.Join(ppathv,DIRSEP)
case pathv[0] == "~":
pathv[0],_ = userHomeDir()
default:
cwd, _ := os.Getwd()
pathv[0] = cwd + DIRSEP + pathv[0]
}
return strings.Join(pathv,DIRSEP)
}
func IsRegFile(path string)(bool){
fi, err := os.Stat(path)
if err == nil {
fm := fi.Mode()
return fm.IsRegular();
}
return false
}
//
Encode / Decode
//
Encoder
func (gshCtx *GshContext)Enc(argv[]string){
file := os.Stdin
buff := make([]byte,LINESIZE)
li := 0
encoder := base64.NewEncoder(base64.StdEncoding,os.Stdout)
for li = 0; ; li++ {
count, err := file.Read(buff)
if count <= 0 {
break
}
if err != nil {
break
}
encoder.Write(buff[0:count])
}
encoder.Close()
}
func (gshCtx *GshContext)Dec(argv[]string){
decoder := base64.NewDecoder(base64.StdEncoding,os.Stdin)
li := 0
buff := make([]byte,LINESIZE)
for li = 0; ; li++ {
count, err := decoder.Read(buff)
if count <= 0 {
break
}
if err != nil {
break
}
os.Stdout.Write(buff[0:count])
}
}
// lnsp [N] [-crlf][-C \\]
func (gshCtx *GshContext)SplitLine(argv[]string){
reader := bufio.NewReaderSize(os.Stdin,64*1024)
ni := 0
toi := 0
for ni = 0; ; ni++ {
line, err := reader.ReadString('\n')
if len(line) <= 0 {
if err != nil {
fmt.Fprintf(os.Stderr,"--I-- lnsp %d to %d (%v)\n",ni,toi,err)
break
}
}
off := 0
ilen := len(line)
remlen := len(line)
for oi := 0; 0 < remlen; oi++ {
olen := remlen
addnl := false
if 72 < olen {
olen = 72
addnl = true
}
fmt.Fprintf(os.Stderr,"--D-- write %d [%d.%d] %d %d/%d/%d\n",
toi,ni,oi,off,olen,remlen,ilen)
toi += 1
os.Stdout.Write([]byte(line[0:olen]))
if addnl {
//os.Stdout.Write([]byte("\r\n"))
os.Stdout.Write([]byte("\\"))
os.Stdout.Write([]byte("\n"))
}
line = line[olen:]
off += olen
remlen -= olen
}
}
fmt.Fprintf(os.Stderr,"--I-- lnsp %d to %d\n",ni,toi)
}
// CRC32
crc32
// 1 0000 0100 1100 0001 0001 1101 1011 0111
var CRC32UNIX uint32 = uint32(0x04C11DB7) // Unix cksum
var CRC32IEEE uint32 = uint32(0xEDB88320)
func byteCRC32add(crc uint32,str[]byte,len uint64)(uint32){
var oi uint64
for oi = 0; oi < len; oi++ {
var oct = str[oi]
for bi := 0; bi < 8; bi++ {
//fprintf(stderr,"--CRC32 %d %X (%d.%d)\n",crc,oct,oi,bi)
ovf1 := (crc & 0x80000000) != 0
ovf2 := (oct & 0x80) != 0
ovf := (ovf1 && !ovf2) || (!ovf1 && ovf2)
oct <<= 1
crc <<= 1
if ovf { crc ^= CRC32UNIX }
}
}
//fprintf(stderr,"--CRC32 return %d %d\n",crc,len)
return crc;
}
func byteCRC32end(crc uint32, len uint64)(uint32){
var slen = make([]byte,4)
var li = 0
for li = 0; li < 4; {
slen[li] = byte(len)
li += 1
len >>= 8
if( len == 0 ){
break
}
}
crc = byteCRC32add(crc,slen,uint64(li))
crc ^= 0xFFFFFFFF
return crc
}
func strCRC32(str string,len uint64)(crc uint32){
crc = byteCRC32add(0,[]byte(str),len)
crc = byteCRC32end(crc,len)
//fprintf(stderr,"--CRC32 %d %d\n",crc,len)
return crc
}
func CRC32Finish(crc uint32, table *crc32.Table, len uint64)(uint32){
var slen = make([]byte,4)
var li = 0
for li = 0; li < 4; {
slen[li] = byte(len & 0xFF)
li += 1
len >>= 8
if( len == 0 ){
break
}
}
crc = crc32.Update(crc,table,slen)
crc ^= 0xFFFFFFFF
return crc
}
func (gsh*GshContext)xCksum(path string,argv[]string, sum*CheckSum)(int64){
if isin("-type/f",argv) && !IsRegFile(path){
return 0
}
if isin("-type/d",argv) && IsRegFile(path){
return 0
}
file, err := os.OpenFile(path,os.O_RDONLY,0)
if err != nil {
fmt.Printf("--E-- cksum %v (%v)\n",path,err)
return -1
}
defer file.Close()
if gsh.CmdTrace { fmt.Printf("--I-- cksum %v %v\n",path,argv) }
bi := 0
var buff = make([]byte,32*1024)
var total int64 = 0
var initTime = time.Time{}
if sum.Start == initTime {
sum.Start = time.Now()
}
for bi = 0; ; bi++ {
count,err := file.Read(buff)
if count <= 0 || err != nil {
break
}
if (sum.SumType & SUM_SUM64) != 0 {
s := sum.Sum64
for _,c := range buff[0:count] {
s += uint64(c)
}
sum.Sum64 = s
}
if (sum.SumType & SUM_UNIXFILE) != 0 {
sum.Crc32Val = byteCRC32add(sum.Crc32Val,buff,uint64(count))
}
if (sum.SumType & SUM_CRCIEEE) != 0 {
sum.Crc32Val = crc32.Update(sum.Crc32Val,&sum.Crc32Table,buff[0:count])
}
//
BSD checksum
if (sum.SumType & SUM_SUM16_BSD) != 0 {
s := sum.Sum16
for _,c := range buff[0:count] {
s = (s >> 1) + ((s & 1) << 15)
s += int(c)
s &= 0xFFFF
//fmt.Printf("BSDsum: %d[%d] %d\n",sum.Size+int64(i),i,s)
}
sum.Sum16 = s
}
if (sum.SumType & SUM_SUM16_SYSV) != 0 {
for bj := 0; bj < count; bj++ {
sum.Sum16 += int(buff[bj])
}
}
total += int64(count)
}
sum.Done = time.Now()
sum.Files += 1
sum.Size += total
if !isin("-s",argv) {
fmt.Printf("%v ",total)
}
return 0
}
//
grep
// "lines", "lin" or "lnp" for "(text) line processor" or "scanner"
// a*,!ab,c, ... sequentioal combination of patterns
// what "LINE" is should be definable
// generic line-by-line processing
// grep [-v]
// cat -n -v
// uniq [-c]
// tail -f
// sed s/x/y/ or awk
// grep with line count like wc
// rewrite contents if specified
func (gsh*GshContext)xGrep(path string,rexpv[]string)(int){
file, err := os.OpenFile(path,os.O_RDONLY,0)
if err != nil {
fmt.Printf("--E-- grep %v (%v)\n",path,err)
return -1
}
defer file.Close()
if gsh.CmdTrace { fmt.Printf("--I-- grep %v %v\n",path,rexpv) }
//reader := bufio.NewReaderSize(file,LINESIZE)
reader := bufio.NewReaderSize(file,80)
li := 0
found := 0
for li = 0; ; li++ {
line, err := reader.ReadString('\n')
if len(line) <= 0 {
break
}
if 150 < len(line) {
// maybe binary
break;
}
if err != nil {
break
}
if 0 <= strings.Index(string(line),rexpv[0]) {
found += 1
fmt.Printf("%s:%d: %s",path,li,line)
}
}
//fmt.Printf("total %d lines %s\n",li,path)
//if( 0 < found ){ fmt.Printf("((found %d lines %s))\n",found,path); }
return found
}
//
Finder
// finding files with it name and contents
// file names are ORed
// show the content with %x fmt list
// ls -R
// tar command by adding output
type fileSum struct {
Err int64 // access error or so
Size int64 // content size
DupSize int64 // content size from hard links
Blocks int64 // number of blocks (of 512 bytes)
DupBlocks int64 // Blocks pointed from hard links
HLinks int64 // hard links
Words int64
Lines int64
Files int64
Dirs int64 // the num. of directories
SymLink int64
Flats int64 // the num. of flat files
MaxDepth int64
MaxNamlen int64 // max. name length
nextRepo time.Time
}
func showFusage(dir string,fusage *fileSum){
bsume := float64(((fusage.Blocks-fusage.DupBlocks)/2)*1024)/1000000.0
//bsumdup := float64((fusage.Blocks/2)*1024)/1000000.0
fmt.Printf("%v: %v files (%vd %vs %vh) %.6f MB (%.2f MBK)\n",
dir,
fusage.Files,
fusage.Dirs,
fusage.SymLink,
fusage.HLinks,
float64(fusage.Size)/1000000.0,bsume);
}
const (
S_IFMT = 0170000
S_IFCHR = 0020000
S_IFDIR = 0040000
S_IFREG = 0100000
S_IFLNK = 0120000
S_IFSOCK = 0140000
)
func cumFinfo(fsum *fileSum, path string, staterr error, fstat syscall.Stat_t, argv[]string,verb bool)(*fileSum){
now := time.Now()
if time.Second <= now.Sub(fsum.nextRepo) {
if !fsum.nextRepo.IsZero(){
tstmp := now.Format(time.Stamp)
showFusage(tstmp,fsum)
}
fsum.nextRepo = now.Add(time.Second)
}
if staterr != nil {
fsum.Err += 1
return fsum
}
fsum.Files += 1
if 1 < fstat.Nlink {
// must count only once...
// at least ignore ones in the same directory
//if finfo.Mode().IsRegular() {
if (fstat.Mode & S_IFMT) == S_IFREG {
fsum.HLinks += 1
fsum.DupBlocks += int64(fstat.Blocks)
//fmt.Printf("---Dup HardLink %v %s\n",fstat.Nlink,path)
}
}
//fsum.Size += finfo.Size()
fsum.Size += fstat.Size
fsum.Blocks += int64(fstat.Blocks)
//if verb { fmt.Printf("(%8dBlk) %s",fstat.Blocks/2,path) }
if isin("-ls",argv){
//if verb { fmt.Printf("%4d %8d ",fstat.Blksize,fstat.Blocks) }
// fmt.Printf("%d\t",fstat.Blocks/2)
}
//if finfo.IsDir()
if (fstat.Mode & S_IFMT) == S_IFDIR {
fsum.Dirs += 1
}
//if (finfo.Mode() & os.ModeSymlink) != 0
if (fstat.Mode & S_IFMT) == S_IFLNK {
//if verb { fmt.Printf("symlink(%v,%s)\n",fstat.Mode,finfo.Name()) }
//{ fmt.Printf("symlink(%o,%s)\n",fstat.Mode,finfo.Name()) }
fsum.SymLink += 1
}
return fsum
}
func (gsh*GshContext)xxFindEntv(depth int,total *fileSum,dir string, dstat syscall.Stat_t, ei int, entv []string,npatv[]string,argv[]string)(*fileSum){
nols := isin("-grep",argv)
// sort entv
/*
if isin("-t",argv){
sort.Slice(filev, func(i,j int) bool {
return 0 < filev[i].ModTime().Sub(filev[j].ModTime())
})
}
*/
/*
if isin("-u",argv){
sort.Slice(filev, func(i,j int) bool {
return 0 < filev[i].AccTime().Sub(filev[j].AccTime())
})
}
if isin("-U",argv){
sort.Slice(filev, func(i,j int) bool {
return 0 < filev[i].CreatTime().Sub(filev[j].CreatTime())
})
}
*/
/*
if isin("-S",argv){
sort.Slice(filev, func(i,j int) bool {
return filev[j].Size() < filev[i].Size()
})
}
*/
for _,filename := range entv {
for _,npat := range npatv {
match := true
if npat == "*" {
match = true
}else{
match, _ = filepath.Match(npat,filename)
}
path := dir + DIRSEP + filename
if !match {
continue
}
var fstat syscall.Stat_t
staterr := syscall.Lstat(path,&fstat)
if staterr != nil {
if !isin("-w",argv){fmt.Printf("ufind: %v\n",staterr) }
continue;
}
if isin("-du",argv) && (fstat.Mode & S_IFMT) == S_IFDIR {
// should not show size of directory in "-du" mode ...
}else
if !nols && !isin("-s",argv) && (!isin("-du",argv) || isin("-a",argv)) {
if isin("-du",argv) {
fmt.Printf("%d\t",fstat.Blocks/2)
}
showFileInfo(path,argv)
}
if true { // && isin("-du",argv)
total = cumFinfo(total,path,staterr,fstat,argv,false)
}
/*
if isin("-wc",argv) {
}
*/
if gsh.lastCheckSum.SumType != 0 {
gsh.xCksum(path,argv,&gsh.lastCheckSum);
}
x := isinX("-grep",argv); // -grep will be convenient like -ls
if 0 <= x && x+1 <= len(argv) { // -grep will be convenient like -ls
if IsRegFile(path){
found := gsh.xGrep(path,argv[x+1:])
if 0 < found {
foundv := gsh.CmdCurrent.FoundFile
if len(foundv) < 10 {
gsh.CmdCurrent.FoundFile =
append(gsh.CmdCurrent.FoundFile,path)
}
}
}
}
if !isin("-r0",argv) { // -d 0 in du, -depth n in find
//total.Depth += 1
if (fstat.Mode & S_IFMT) == S_IFLNK {
continue
}
if dstat.Rdev != fstat.Rdev {
fmt.Printf("--I-- don't follow differnet device %v(%v) %v(%v)\n",
dir,dstat.Rdev,path,fstat.Rdev)
}
if (fstat.Mode & S_IFMT) == S_IFDIR {
total = gsh.xxFind(depth+1,total,path,npatv,argv)
}
}
}
}
return total
}
func (gsh*GshContext)xxFind(depth int,total *fileSum,dir string,npatv[]string,argv[]string)(*fileSum){
nols := isin("-grep",argv)
dirfile,oerr := os.OpenFile(dir,os.O_RDONLY,0)
if oerr == nil {
//fmt.Printf("--I-- %v(%v)[%d]\n",dir,dirfile,dirfile.Fd())
defer dirfile.Close()
}else{
}
prev := *total
var dstat syscall.Stat_t
staterr := syscall.Lstat(dir,&dstat) // should be flstat
if staterr != nil {
if !isin("-w",argv){ fmt.Printf("ufind: %v\n",staterr) }
return total
}
//filev,err := ioutil.ReadDir(dir)
//_,err := ioutil.ReadDir(dir) // ReadDir() heavy and bad for huge directory
/*
if err != nil {
if !isin("-w",argv){ fmt.Printf("ufind: %v\n",err) }
return total
}
*/
if depth == 0 {
total = cumFinfo(total,dir,staterr,dstat,argv,true)
if !nols && !isin("-s",argv) && (!isin("-du",argv) || isin("-a",argv)) {
showFileInfo(dir,argv)
}
}
// it it is not a directory, just scan it and finish
for ei := 0; ; ei++ {
entv,rderr := dirfile.Readdirnames(8*1024)
if len(entv) == 0 || rderr != nil {
//if rderr != nil { fmt.Printf("[%d] len=%d (%v)\n",ei,len(entv),rderr) }
break
}
if 0 < ei {
fmt.Printf("--I-- xxFind[%d] %d large-dir: %s\n",ei,len(entv),dir)
}
total = gsh.xxFindEntv(depth,total,dir,dstat,ei,entv,npatv,argv)
}
if isin("-du",argv) {
// if in "du" mode
fmt.Printf("%d\t%s\n",(total.Blocks-prev.Blocks)/2,dir)
}
return total
}
// {ufind|fu|ls} [Files] [// Names] [-- Expressions]
// Files is "." by default
// Names is "*" by default
// Expressions is "-print" by default for "ufind", or -du for "fu" command
func (gsh*GshContext)xFind(argv[]string){
if 0 < len(argv) && strBegins(argv[0],"?"){
showFound(gsh,argv)
return
}
if isin("-cksum",argv) || isin("-sum",argv) {
gsh.lastCheckSum = CheckSum{}
if isin("-sum",argv) && isin("-add",argv) {
gsh.lastCheckSum.SumType |= SUM_SUM64
}else
if isin("-sum",argv) && isin("-size",argv) {
gsh.lastCheckSum.SumType |= SUM_SIZE
}else
if isin("-sum",argv) && isin("-bsd",argv) {
gsh.lastCheckSum.SumType |= SUM_SUM16_BSD
}else
if isin("-sum",argv) && isin("-sysv",argv) {
gsh.lastCheckSum.SumType |= SUM_SUM16_SYSV
}else
if isin("-sum",argv) {
gsh.lastCheckSum.SumType |= SUM_SUM64
}
if isin("-unix",argv) {
gsh.lastCheckSum.SumType |= SUM_UNIXFILE
gsh.lastCheckSum.Crc32Table = *crc32.MakeTable(CRC32UNIX)
}
if isin("-ieee",argv){
gsh.lastCheckSum.SumType |= SUM_CRCIEEE
gsh.lastCheckSum.Crc32Table = *crc32.MakeTable(CRC32IEEE)
}
gsh.lastCheckSum.RusgAtStart = Getrusagev()
}
var total = fileSum{}
npats := []string{}
for _,v := range argv {
if 0 < len(v) && v[0] != '-' {
npats = append(npats,v)
}
if v == "//" { break }
if v == "--" { break }
if v == "-grep" { break }
if v == "-ls" { break }
}
if len(npats) == 0 {
npats = []string{"*"}
}
cwd := "."
// if to be fullpath ::: cwd, _ := os.Getwd()
if len(npats) == 0 { npats = []string{"*"} }
fusage := gsh.xxFind(0,&total,cwd,npats,argv)
if gsh.lastCheckSum.SumType != 0 {
var sumi uint64 = 0
sum := &gsh.lastCheckSum
if (sum.SumType & SUM_SIZE) != 0 {
sumi = uint64(sum.Size)
}
if (sum.SumType & SUM_SUM64) != 0 {
sumi = sum.Sum64
}
if (sum.SumType & SUM_SUM16_SYSV) != 0 {
s := uint32(sum.Sum16)
r := (s & 0xFFFF) + ((s & 0xFFFFFFFF) >> 16)
s = (r & 0xFFFF) + (r >> 16)
sum.Crc32Val = uint32(s)
sumi = uint64(s)
}
if (sum.SumType & SUM_SUM16_BSD) != 0 {
sum.Crc32Val = uint32(sum.Sum16)
sumi = uint64(sum.Sum16)
}
if (sum.SumType & SUM_UNIXFILE) != 0 {
sum.Crc32Val = byteCRC32end(sum.Crc32Val,uint64(sum.Size))
sumi = uint64(byteCRC32end(sum.Crc32Val,uint64(sum.Size)))
}
if 1 < sum.Files {
fmt.Printf("%v %v // %v / %v files, %v/file\r\n",
sumi,sum.Size,
abssize(sum.Size),sum.Files,
abssize(sum.Size/sum.Files))
}else{
fmt.Printf("%v %v %v\n",
sumi,sum.Size,npats[0])
}
}
if !isin("-grep",argv) {
showFusage("total",fusage)
}
if !isin("-s",argv){
hits := len(gsh.CmdCurrent.FoundFile)
if 0 < hits {
fmt.Printf("--I-- %d files hits // can be refered with !%df\n",
hits,len(gsh.CommandHistory))
}
}
if gsh.lastCheckSum.SumType != 0 {
if isin("-ru",argv) {
sum := &gsh.lastCheckSum
sum.Done = time.Now()
gsh.lastCheckSum.RusgAtEnd = Getrusagev()
elps := sum.Done.Sub(sum.Start)
fmt.Printf("--cksum-size: %v (%v) / %v files, %v/file\r\n",
sum.Size,abssize(sum.Size),sum.Files,abssize(sum.Size/sum.Files))
nanos := int64(elps)
fmt.Printf("--cksum-time: %v/total, %v/file, %.1f files/s, %v\r\n",
abbtime(nanos),
abbtime(nanos/sum.Files),
(float64(sum.Files)*1000000000.0)/float64(nanos),
abbspeed(sum.Size,nanos))
diff := RusageSubv(sum.RusgAtEnd,sum.RusgAtStart)
fmt.Printf("--cksum-rusg: %v\n",sRusagef("",argv,diff))
}
}
return
}
func showFiles(files[]string){
sp := ""
for i,file := range files {
if 0 < i { sp = " " } else { sp = "" }
fmt.Printf(sp+"%s",escapeWhiteSP(file))
}
}
func showFound(gshCtx *GshContext, argv[]string){
for i,v := range gshCtx.CommandHistory {
if 0 < len(v.FoundFile) {
fmt.Printf("!%d (%d) ",i,len(v.FoundFile))
if isin("-ls",argv){
fmt.Printf("\n")
for _,file := range v.FoundFile {
fmt.Printf("") //sub number?
showFileInfo(file,argv)
}
}else{
showFiles(v.FoundFile)
fmt.Printf("\n")
}
}
}
}
func showMatchFile(filev []os.FileInfo, npat,dir string, argv[]string)(string,bool){
fname := ""
found := false
for _,v := range filev {
match, _ := filepath.Match(npat,(v.Name()))
if match {
fname = v.Name()
found = true
//fmt.Printf("[%d] %s\n",i,v.Name())
showIfExecutable(fname,dir,argv)
}
}
return fname,found
}
func showIfExecutable(name,dir string,argv[]string)(ffullpath string,ffound bool){
var fullpath string
if strBegins(name,DIRSEP){
fullpath = name
}else{
fullpath = dir + DIRSEP + name
}
fi, err := os.Stat(fullpath)
if err != nil {
fullpath = dir + DIRSEP + name + ".go"
fi, err = os.Stat(fullpath)
}
if err == nil {
fm := fi.Mode()
if fm.IsRegular() {
// R_OK=4, W_OK=2, X_OK=1, F_OK=0
if syscall.Access(fullpath,5) == nil {
ffullpath = fullpath
ffound = true
if ! isin("-s", argv) {
showFileInfo(fullpath,argv)
}
}
}
}
return ffullpath, ffound
}
func which(list string, argv []string) (fullpathv []string, itis bool){
if len(argv) <= 1 {
fmt.Printf("Usage: which comand [-s] [-a] [-ls]\n")
return []string{""}, false
}
path := argv[1]
if strBegins(path,"/") {
// should check if excecutable?
_,exOK := showIfExecutable(path,"/",argv)
fmt.Printf("--D-- %v exOK=%v\n",path,exOK)
return []string{path},exOK
}
pathenv, efound := os.LookupEnv(list)
if ! efound {
fmt.Printf("--E-- which: no \"%s\" environment\n",list)
return []string{""}, false
}
showall := isin("-a",argv) || 0 <= strings.Index(path,"*")
dirv := strings.Split(pathenv,PATHSEP)
ffound := false
ffullpath := path
for _, dir := range dirv {
if 0 <= strings.Index(path,"*") { // by wild-card
list,_ := ioutil.ReadDir(dir)
ffullpath, ffound = showMatchFile(list,path,dir,argv)
}else{
ffullpath, ffound = showIfExecutable(path,dir,argv)
}
//if ffound && !isin("-a", argv) {
if ffound && !showall {
break;
}
}
return []string{ffullpath}, ffound
}
func stripLeadingWSParg(argv[]string)([]string){
for ; 0 < len(argv); {
if len(argv[0]) == 0 {
argv = argv[1:]
}else{
break
}
}
return argv
}
func xEval(argv []string, nlend bool){
argv = stripLeadingWSParg(argv)
if len(argv) == 0 {
fmt.Printf("eval [%%format] [Go-expression]\n")
return
}
pfmt := "%v"
if argv[0][0] == '%' {
pfmt = argv[0]
argv = argv[1:]
}
if len(argv) == 0 {
return
}
gocode := strings.Join(argv," ");
//fmt.Printf("eval [%v] [%v]\n",pfmt,gocode)
fset := token.NewFileSet()
rval, _ := types.Eval(fset,nil,token.NoPos,gocode)
fmt.Printf(pfmt,rval.Value)
if nlend { fmt.Printf("\n") }
}
func getval(name string) (found bool, val int) {
/* should expand the name here */
if name == "gsh.pid" {
return true, os.Getpid()
}else
if name == "gsh.ppid" {
return true, os.Getppid()
}
return false, 0
}
func echo(argv []string, nlend bool){
for ai := 1; ai < len(argv); ai++ {
if 1 < ai {
fmt.Printf(" ");
}
arg := argv[ai]
found, val := getval(arg)
if found {
fmt.Printf("%d",val)
}else{
fmt.Printf("%s",arg)
}
}
if nlend {
fmt.Printf("\n");
}
}
func resfile() string {
return "gsh.tmp"
}
//var resF *File
func resmap() {
//_ , err := os.OpenFile(resfile(), os.O_RDWR|os.O_CREATE, os.ModeAppend)
// https://developpaper.com/solution-to-golang-bad-file-descriptor-problem/
_ , err := os.OpenFile(resfile(), os.O_RDWR|os.O_CREATE, 0600)
if err != nil {
fmt.Printf("refF could not open: %s\n",err)
}else{
fmt.Printf("refF opened\n")
}
}
// @@2020-0821
func gshScanArg(str string,strip int)(argv []string){
var si = 0
var sb = 0
var inBracket = 0
var arg1 = make([]byte,LINESIZE)
var ax = 0
debug := false
for ; si < len(str); si++ {
if str[si] != ' ' {
break
}
}
sb = si
for ; si < len(str); si++ {
if sb <= si {
if debug {
fmt.Printf("--Da- +%d %2d-%2d %s ... %s\n",
inBracket,sb,si,arg1[0:ax],str[si:])
}
}
ch := str[si]
if ch == '{' {
inBracket += 1
if 0 < strip && inBracket <= strip {
//fmt.Printf("stripLEV %d <= %d?\n",inBracket,strip)
continue
}
}
if 0 < inBracket {
if ch == '}' {
inBracket -= 1
if 0 < strip && inBracket < strip {
//fmt.Printf("stripLEV %d < %d?\n",inBracket,strip)
continue
}
}
arg1[ax] = ch
ax += 1
continue
}
if str[si] == ' ' {
argv = append(argv,string(arg1[0:ax]))
if debug {
fmt.Printf("--Da- [%v][%v-%v] %s ... %s\n",
-1+len(argv),sb,si,str[sb:si],string(str[si:]))
}
sb = si+1
ax = 0
continue
}
arg1[ax] = ch
ax += 1
}
if sb < si {
argv = append(argv,string(arg1[0:ax]))
if debug {
fmt.Printf("--Da- [%v][%v-%v] %s ... %s\n",
-1+len(argv),sb,si,string(arg1[0:ax]),string(str[si:]))
}
}
if debug {
fmt.Printf("--Da- %d [%s] => [%d]%v\n",strip,str,len(argv),argv)
}
return argv
}
// should get stderr (into tmpfile ?) and return
func (gsh*GshContext)Popen(name,mode string)(pin*os.File,pout*os.File,err bool){
var pv = []int{-1,-1}
syscall.Pipe(pv)
xarg := gshScanArg(name,1)
name = strings.Join(xarg," ")
pin = os.NewFile(uintptr(pv[0]),"StdoutOf-{"+name+"}")
pout = os.NewFile(uintptr(pv[1]),"StdinOf-{"+name+"}")
fdix := 0
dir := "?"
if mode == "r" {
dir = "<"
fdix = 1 // read from the stdout of the process
}else{
dir = ">"
fdix = 0 // write to the stdin of the process
}
gshPA := gsh.gshPA
savfd := gshPA.Files[fdix]
var fd uintptr = 0
if mode == "r" {
fd = pout.Fd()
gshPA.Files[fdix] = pout.Fd()
}else{
fd = pin.Fd()
gshPA.Files[fdix] = pin.Fd()
}
// should do this by Goroutine?
if false {
fmt.Printf("--Ip- Opened fd[%v] %s %v\n",fd,dir,name)
fmt.Printf("--RED1 [%d,%d,%d]->[%d,%d,%d]\n",
os.Stdin.Fd(),os.Stdout.Fd(),os.Stderr.Fd(),
pin.Fd(),pout.Fd(),pout.Fd())
}
savi := os.Stdin
savo := os.Stdout
save := os.Stderr
os.Stdin = pin
os.Stdout = pout
os.Stderr = pout
gsh.BackGround = true
gsh.gshelllh(name)
gsh.BackGround = false
os.Stdin = savi
os.Stdout = savo
os.Stderr = save
gshPA.Files[fdix] = savfd
return pin,pout,false
}
//
External commands
func (gsh*GshContext)excommand(exec bool, argv []string) (notf bool,exit bool) {
if gsh.CmdTrace { fmt.Printf("--I-- excommand[%v](%v)\n",exec,argv) }
gshPA := gsh.gshPA
fullpathv, itis := which("PATH",[]string{"which",argv[0],"-s"})
if itis == false {
return true,false
}
fullpath := fullpathv[0]
argv = unescapeWhiteSPV(argv)
if 0 < strings.Index(fullpath,".go") {
nargv := argv // []string{}
gofullpathv, itis := which("PATH",[]string{"which","go","-s"})
if itis == false {
fmt.Printf("--F-- Go not found\n")
return false,true
}
gofullpath := gofullpathv[0]
nargv = []string{ gofullpath, "run", fullpath }
fmt.Printf("--I-- %s {%s %s %s}\n",gofullpath,
nargv[0],nargv[1],nargv[2])
if exec {
syscall.Exec(gofullpath,nargv,os.Environ())
}else{
pid, _ := syscall.ForkExec(gofullpath,nargv,&gshPA)
if gsh.BackGround {
fmt.Fprintf(stderr,"--Ip- in Background pid[%d]%d(%v)\n",pid,len(argv),nargv)
gsh.BackGroundJobs = append(gsh.BackGroundJobs,pid)
}else{
rusage := syscall.Rusage {}
syscall.Wait4(pid,nil,0,&rusage)
gsh.LastRusage = rusage
gsh.CmdCurrent.Rusagev[1] = rusage
}
}
}else{
if exec {
syscall.Exec(fullpath,argv,os.Environ())
}else{
pid, _ := syscall.ForkExec(fullpath,argv,&gshPA)
//fmt.Printf("[%d]\n",pid); // '&' to be background
if gsh.BackGround {
fmt.Fprintf(stderr,"--Ip- in Background pid[%d]%d(%v)\n",pid,len(argv),argv)
gsh.BackGroundJobs = append(gsh.BackGroundJobs,pid)
}else{
rusage := syscall.Rusage {}
syscall.Wait4(pid,nil,0,&rusage);
gsh.LastRusage = rusage
gsh.CmdCurrent.Rusagev[1] = rusage
}
}
}
return false,false
}
//
Builtin Commands
func (gshCtx *GshContext) sleep(argv []string) {
if len(argv) < 2 {
fmt.Printf("Sleep 100ms, 100us, 100ns, ...\n")
return
}
duration := argv[1];
d, err := time.ParseDuration(duration)
if err != nil {
d, err = time.ParseDuration(duration+"s")
if err != nil {
fmt.Printf("duration ? %s (%s)\n",duration,err)
return
}
}
//fmt.Printf("Sleep %v\n",duration)
time.Sleep(d)
if 0 < len(argv[2:]) {
gshCtx.gshellv(argv[2:])
}
}
func (gshCtx *GshContext)repeat(argv []string) {
if len(argv) < 2 {
return
}
start0 := time.Now()
for ri,_ := strconv.Atoi(argv[1]); 0 < ri; ri-- {
if 0 < len(argv[2:]) {
//start := time.Now()
gshCtx.gshellv(argv[2:])
end := time.Now()
elps := end.Sub(start0);
if( 1000000000 < elps ){
fmt.Printf("(repeat#%d %v)\n",ri,elps);
}
}
}
}
func (gshCtx *GshContext)gen(argv []string) {
gshPA := gshCtx.gshPA
if len(argv) < 2 {
fmt.Printf("Usage: %s N\n",argv[0])
return
}
// should br repeated by "repeat" command
count, _ := strconv.Atoi(argv[1])
fd := gshPA.Files[1] // Stdout
file := os.NewFile(fd,"internalStdOut")
fmt.Printf("--I-- Gen. Count=%d to [%d]\n",count,file.Fd())
//buf := []byte{}
outdata := "0123 5678 0123 5678 0123 5678 0123 5678\r"
for gi := 0; gi < count; gi++ {
file.WriteString(outdata)
}
//file.WriteString("\n")
fmt.Printf("\n(%d B)\n",count*len(outdata));
//file.Close()
}
//
Remote Execution // 2020-0820
func Elapsed(from time.Time)(string){
elps := time.Now().Sub(from)
if 1000000000 < elps {
return fmt.Sprintf("[%5d.%02ds]",elps/1000000000,(elps%1000000000)/10000000)
}else
if 1000000 < elps {
return fmt.Sprintf("[%3d.%03dms]",elps/1000000,(elps%1000000)/1000)
}else{
return fmt.Sprintf("[%3d.%03dus]",elps/1000,(elps%1000))
}
}
func abbtime(nanos int64)(string){
if 1000000000 < nanos {
return fmt.Sprintf("%d.%02ds",nanos/1000000000,(nanos%1000000000)/10000000)
}else
if 1000000 < nanos {
return fmt.Sprintf("%d.%03dms",nanos/1000000,(nanos%1000000)/1000)
}else{
return fmt.Sprintf("%d.%03dus",nanos/1000,(nanos%1000))
}
}
func abssize(size int64)(string){
fsize := float64(size)
if 1024*1024*1024 < size {
return fmt.Sprintf("%.2fGiB",fsize/(1024*1024*1024))
}else
if 1024*1024 < size {
return fmt.Sprintf("%.3fMiB",fsize/(1024*1024))
}else{
return fmt.Sprintf("%.3fKiB",fsize/1024)
}
}
func absize(size int64)(string){
fsize := float64(size)
if 1024*1024*1024 < size {
return fmt.Sprintf("%8.2fGiB",fsize/(1024*1024*1024))
}else
if 1024*1024 < size {
return fmt.Sprintf("%8.3fMiB",fsize/(1024*1024))
}else{
return fmt.Sprintf("%8.3fKiB",fsize/1024)
}
}
func abbspeed(totalB int64,ns int64)(string){
MBs := (float64(totalB)/1000000) / (float64(ns)/1000000000)
if 1000 <= MBs {
return fmt.Sprintf("%6.3fGB/s",MBs/1000)
}
if 1 <= MBs {
return fmt.Sprintf("%6.3fMB/s",MBs)
}else{
return fmt.Sprintf("%6.3fKB/s",MBs*1000)
}
}
func abspeed(totalB int64,ns time.Duration)(string){
MBs := (float64(totalB)/1000000) / (float64(ns)/1000000000)
if 1000 <= MBs {
return fmt.Sprintf("%6.3fGBps",MBs/1000)
}
if 1 <= MBs {
return fmt.Sprintf("%6.3fMBps",MBs)
}else{
return fmt.Sprintf("%6.3fKBps",MBs*1000)
}
}
func fileRelay(what string,in*os.File,out*os.File,size int64,bsiz int)(wcount int64){
Start := time.Now()
buff := make([]byte,bsiz)
var total int64 = 0
var rem int64 = size
nio := 0
Prev := time.Now()
var PrevSize int64 = 0
fmt.Printf(Elapsed(Start)+"--In- X: %s (%v/%v/%v) START\n",
what,absize(total),size,nio)
for i:= 0; ; i++ {
var len = bsiz
if int(rem) < len {
len = int(rem)
}
Now := time.Now()
Elps := Now.Sub(Prev);
if 1000000000 < Now.Sub(Prev) {
fmt.Printf(Elapsed(Start)+"--In- X: %s (%v/%v/%v) %s\n",
what,absize(total),size,nio,
abspeed((total-PrevSize),Elps))
Prev = Now;
PrevSize = total
}
rlen := len
if in != nil {
// should watch the disconnection of out
rcc,err := in.Read(buff[0:rlen])
if err != nil {
fmt.Printf(Elapsed(Start)+"--En- X: %s read(%v,%v)<%v\n",
what,rcc,err,in.Name())
break
}
rlen = rcc
if string(buff[0:10]) == "((SoftEOF " {
var ecc int64 = 0
fmt.Sscanf(string(buff),"((SoftEOF %v",&ecc)
fmt.Printf(Elapsed(Start)+"--En- X: %s Recv ((SoftEOF %v))/%v\n",
what,ecc,total)
if ecc == total {
break
}
}
}
wlen := rlen
if out != nil {
wcc,err := out.Write(buff[0:rlen])
if err != nil {
fmt.Printf(Elapsed(Start)+"-En-- X: %s write(%v,%v)>%v\n",
what,wcc,err,out.Name())
break
}
wlen = wcc
}
if wlen < rlen {
fmt.Printf(Elapsed(Start)+"--En- X: %s incomplete write (%v/%v)\n",
what,wlen,rlen)
break;
}
nio += 1
total += int64(rlen)
rem -= int64(rlen)
if rem <= 0 {
break
}
}
Done := time.Now()
Elps := float64(Done.Sub(Start))/1000000000 //Seconds
TotalMB := float64(total)/1000000 //MB
MBps := TotalMB / Elps
fmt.Printf(Elapsed(Start)+"--In- X: %s (%v/%v/%v) %v %.3fMB/s\n",
what,total,size,nio,absize(total),MBps)
return total
}
func tcpPush(clnt *os.File){
// shrink socket buffer and recover
usleep(100);
}
func (gsh*GshContext)RexecServer(argv[]string){
debug := true
Start0 := time.Now()
Start := Start0
// if local == ":" { local = "0.0.0.0:9999" }
local := "0.0.0.0:9999"
if 0 < len(argv) {
if argv[0] == "-s" {
debug = false
argv = argv[1:]
}
}
if 0 < len(argv) {
argv = argv[1:]
}
port, err := net.ResolveTCPAddr("tcp",local);
if err != nil {
fmt.Printf("--En- S: Address error: %s (%s)\n",local,err)
return
}
fmt.Printf(Elapsed(Start)+"--In- S: Listening at %s...\n",local);
sconn, err := net.ListenTCP("tcp", port)
if err != nil {
fmt.Printf(Elapsed(Start)+"--En- S: Listen error: %s (%s)\n",local,err)
return
}
reqbuf := make([]byte,LINESIZE)
res := ""
for {
fmt.Printf(Elapsed(Start0)+"--In- S: Listening at %s...\n",local);
aconn, err := sconn.AcceptTCP()
Start = time.Now()
if err != nil {
fmt.Printf(Elapsed(Start)+"--En- S: Accept error: %s (%s)\n",local,err)
return
}
clnt, _ := aconn.File()
fd := clnt.Fd()
ar := aconn.RemoteAddr()
if debug { fmt.Printf(Elapsed(Start0)+"--In- S: Accepted TCP at %s [%d] <- %v\n",
local,fd,ar) }
res = fmt.Sprintf("220 GShell/%s Server\r\n",VERSION)
fmt.Fprintf(clnt,"%s",res)
if debug { fmt.Printf(Elapsed(Start)+"--In- S: %s",res) }
count, err := clnt.Read(reqbuf)
if err != nil {
fmt.Printf(Elapsed(Start)+"--En- C: (%v %v) %v",
count,err,string(reqbuf))
}
req := string(reqbuf[:count])
if debug { fmt.Printf(Elapsed(Start)+"--In- C: %v",string(req)) }
reqv := strings.Split(string(req),"\r")
cmdv := gshScanArg(reqv[0],0)
//cmdv := strings.Split(reqv[0]," ")
switch cmdv[0] {
case "HELO":
res = fmt.Sprintf("250 %v",req)
case "GET":
// download {remotefile|-zN} [localfile]
var dsize int64 = 32*1024*1024
var bsize int = 64*1024
var fname string = ""
var in *os.File = nil
var pseudoEOF = false
if 1 < len(cmdv) {
fname = cmdv[1]
if strBegins(fname,"-z") {
fmt.Sscanf(fname[2:],"%d",&dsize)
}else
if strBegins(fname,"{") {
xin,xout,err := gsh.Popen(fname,"r")
if err {
}else{
xout.Close()
defer xin.Close()
in = xin
dsize = MaxStreamSize
pseudoEOF = true
}
}else{
xin,err := os.Open(fname)
if err != nil {
fmt.Printf("--En- GET (%v)\n",err)
}else{
defer xin.Close()
in = xin
fi,_ := xin.Stat()
dsize = fi.Size()
}
}
}
//fmt.Printf(Elapsed(Start)+"--In- GET %v:%v\n",dsize,bsize)
res = fmt.Sprintf("200 %v\r\n",dsize)
fmt.Fprintf(clnt,"%v",res)
tcpPush(clnt); // should be separated as line in receiver
fmt.Printf(Elapsed(Start)+"--In- S: %v",res)
wcount := fileRelay("SendGET",in,clnt,dsize,bsize)
if pseudoEOF {
in.Close() // pipe from the command
// show end of stream data (its size) by OOB?
SoftEOF := fmt.Sprintf("((SoftEOF %v))",wcount)
fmt.Printf(Elapsed(Start)+"--In- S: Send %v\n",SoftEOF)
tcpPush(clnt); // to let SoftEOF data apper at the top of recevied data
fmt.Fprintf(clnt,"%v\r\n",SoftEOF)
tcpPush(clnt); // to let SoftEOF alone in a packet (separate with 200 OK)
// with client generated random?
//fmt.Printf("--In- L: close %v (%v)\n",in.Fd(),in.Name())
}
res = fmt.Sprintf("200 GET done\r\n")
case "PUT":
// upload {srcfile|-zN} [dstfile]
var dsize int64 = 32*1024*1024
var bsize int = 64*1024
var fname string = ""
var out *os.File = nil
if 1 < len(cmdv) { // localfile
fmt.Sscanf(cmdv[1],"%d",&dsize)
}
if 2 < len(cmdv) {
fname = cmdv[2]
if fname == "-" {
// nul dev
}else
if strBegins(fname,"{") {
xin,xout,err := gsh.Popen(fname,"w")
if err {
}else{
xin.Close()
defer xout.Close()
out = xout
}
}else{
// should write to temporary file
// should suppress ^C on tty
xout,err := os.OpenFile(fname,os.O_CREATE|os.O_RDWR|os.O_TRUNC,0600)
//fmt.Printf("--In- S: open(%v) out(%v) err(%v)\n",fname,xout,err)
if err != nil {
fmt.Printf("--En- PUT (%v)\n",err)
}else{
out = xout
}
}
fmt.Printf(Elapsed(Start)+"--In- L: open(%v,w) %v (%v)\n",
fname,local,err)
}
fmt.Printf(Elapsed(Start)+"--In- PUT %v (/%v)\n",dsize,bsize)
fmt.Printf(Elapsed(Start)+"--In- S: 200 %v OK\r\n",dsize)
fmt.Fprintf(clnt,"200 %v OK\r\n",dsize)
fileRelay("RecvPUT",clnt,out,dsize,bsize)
res = fmt.Sprintf("200 PUT done\r\n")
default:
res = fmt.Sprintf("400 What? %v",req)
}
swcc,serr := clnt.Write([]byte(res))
if serr != nil {
fmt.Printf(Elapsed(Start)+"--In- S: (wc=%v er=%v) %v",swcc,serr,res)
}else{
fmt.Printf(Elapsed(Start)+"--In- S: %v",res)
}
aconn.Close();
clnt.Close();
}
sconn.Close();
}
func (gsh*GshContext)RexecClient(argv[]string)(int,string){
debug := true
Start := time.Now()
if len(argv) == 1 {
return -1,"EmptyARG"
}
argv = argv[1:]
if argv[0] == "-serv" {
gsh.RexecServer(argv[1:])
return 0,"Server"
}
remote := "0.0.0.0:9999"
if argv[0][0] == '@' {
remote = argv[0][1:]
argv = argv[1:]
}
if argv[0] == "-s" {
debug = false
argv = argv[1:]
}
dport, err := net.ResolveTCPAddr("tcp",remote);
if err != nil {
fmt.Printf(Elapsed(Start)+"Address error: %s (%s)\n",remote,err)
return -1,"AddressError"
}
fmt.Printf(Elapsed(Start)+"--In- C: Connecting to %s\n",remote)
serv, err := net.DialTCP("tcp",nil,dport)
if err != nil {
fmt.Printf(Elapsed(Start)+"Connection error: %s (%s)\n",remote,err)
return -1,"CannotConnect"
}
if debug {
al := serv.LocalAddr()
fmt.Printf(Elapsed(Start)+"--In- C: Connected to %v <- %v\n",remote,al)
}
req := ""
res := make([]byte,LINESIZE)
count,err := serv.Read(res)
if err != nil {
fmt.Printf("--En- S: (%3d,%v) %v",count,err,string(res))
}
if debug { fmt.Printf(Elapsed(Start)+"--In- S: %v",string(res)) }
if argv[0] == "GET" {
savPA := gsh.gshPA
var bsize int = 64*1024
req = fmt.Sprintf("%v\r\n",strings.Join(argv," "))
fmt.Printf(Elapsed(Start)+"--In- C: %v",req)
fmt.Fprintf(serv,req)
count,err = serv.Read(res)
if err != nil {
}else{
var dsize int64 = 0
var out *os.File = nil
var out_tobeclosed *os.File = nil
var fname string = ""
var rcode int = 0
var pid int = -1
fmt.Sscanf(string(res),"%d %d",&rcode,&dsize)
fmt.Printf(Elapsed(Start)+"--In- S: %v",string(res[0:count]))
if 3 <= len(argv) {
fname = argv[2]
if strBegins(fname,"{") {
xin,xout,err := gsh.Popen(fname,"w")
if err {
}else{
xin.Close()
defer xout.Close()
out = xout
out_tobeclosed = xout
pid = 0 // should be its pid
}
}else{
// should write to temporary file
// should suppress ^C on tty
xout,err := os.OpenFile(fname,os.O_CREATE|os.O_RDWR|os.O_TRUNC,0600)
if err != nil {
fmt.Print("--En- %v\n",err)
}
out = xout
//fmt.Printf("--In-- %d > %s\n",out.Fd(),fname)
}
}
in,_ := serv.File()
fileRelay("RecvGET",in,out,dsize,bsize)
if 0 <= pid {
gsh.gshPA = savPA // recovery of Fd(), and more?
fmt.Printf(Elapsed(Start)+"--In- L: close Pipe > %v\n",fname)
out_tobeclosed.Close()
//syscall.Wait4(pid,nil,0,nil) //@@
}
}
}else
if argv[0] == "PUT" {
remote, _ := serv.File()
var local *os.File = nil
var dsize int64 = 32*1024*1024
var bsize int = 64*1024
var ofile string = "-"
//fmt.Printf("--I-- Rex %v\n",argv)
if 1 < len(argv) {
fname := argv[1]
if strBegins(fname,"-z") {
fmt.Sscanf(fname[2:],"%d",&dsize)
}else
if strBegins(fname,"{") {
xin,xout,err := gsh.Popen(fname,"r")
if err {
}else{
xout.Close()
defer xin.Close()
//in = xin
local = xin
fmt.Printf("--In- [%d] < Upload output of %v\n",
local.Fd(),fname)
ofile = "-from."+fname
dsize = MaxStreamSize
}
}else{
xlocal,err := os.Open(fname)
if err != nil {
fmt.Printf("--En- (%s)\n",err)
local = nil
}else{
local = xlocal
fi,_ := local.Stat()
dsize = fi.Size()
defer local.Close()
//fmt.Printf("--I-- Rex in(%v / %v)\n",ofile,dsize)
}
ofile = fname
fmt.Printf(Elapsed(Start)+"--In- L: open(%v,r)=%v %v (%v)\n",
fname,dsize,local,err)
}
}
if 2 < len(argv) && argv[2] != "" {
ofile = argv[2]
//fmt.Printf("(%d)%v B.ofile=%v\n",len(argv),argv,ofile)
}
//fmt.Printf(Elapsed(Start)+"--I-- Rex out(%v)\n",ofile)
fmt.Printf(Elapsed(Start)+"--In- PUT %v (/%v)\n",dsize,bsize)
req = fmt.Sprintf("PUT %v %v \r\n",dsize,ofile)
if debug { fmt.Printf(Elapsed(Start)+"--In- C: %v",req) }
fmt.Fprintf(serv,"%v",req)
count,err = serv.Read(res)
if debug { fmt.Printf(Elapsed(Start)+"--In- S: %v",string(res[0:count])) }
fileRelay("SendPUT",local,remote,dsize,bsize)
}else{
req = fmt.Sprintf("%v\r\n",strings.Join(argv," "))
if debug { fmt.Printf(Elapsed(Start)+"--In- C: %v",req) }
fmt.Fprintf(serv,"%v",req)
//fmt.Printf("--In- sending RexRequest(%v)\n",len(req))
}
//fmt.Printf(Elapsed(Start)+"--In- waiting RexResponse...\n")
count,err = serv.Read(res)
ress := ""
if count == 0 {
ress = "(nil)\r\n"
}else{
ress = string(res[:count])
}
if err != nil {
fmt.Printf(Elapsed(Start)+"--En- S: (%d,%v) %v",count,err,ress)
}else{
fmt.Printf(Elapsed(Start)+"--In- S: %v",ress)
}
serv.Close()
//conn.Close()
var stat string
var rcode int
fmt.Sscanf(ress,"%d %s",&rcode,&stat)
//fmt.Printf("--D-- Client: %v (%v)",rcode,stat)
return rcode,ress
}
//
Remote Shell
// gcp file [...] { [host]:[port:][dir] | dir } // -p | -no-p
func (gsh*GshContext)FileCopy(argv[]string){
var host = ""
var port = ""
var upload = false
var download = false
var xargv = []string{"rex-gcp"}
var srcv = []string{}
var dstv = []string{}
argv = argv[1:]
for _,v := range argv {
/*
if v[0] == '-' { // might be a pseudo file (generated date)
continue
}
*/
obj := strings.Split(v,":")
//fmt.Printf("%d %v %v\n",len(obj),v,obj)
if 1 < len(obj) {
host = obj[0]
file := ""
if 0 < len(host) {
gsh.LastServer.host = host
}else{
host = gsh.LastServer.host
port = gsh.LastServer.port
}
if 2 < len(obj) {
port = obj[1]
if 0 < len(port) {
gsh.LastServer.port = port
}else{
port = gsh.LastServer.port
}
file = obj[2]
}else{
file = obj[1]
}
if len(srcv) == 0 {
download = true
srcv = append(srcv,file)
continue
}
upload = true
dstv = append(dstv,file)
continue
}
/*
idx := strings.Index(v,":")
if 0 <= idx {
remote = v[0:idx]
if len(srcv) == 0 {
download = true
srcv = append(srcv,v[idx+1:])
continue
}
upload = true
dstv = append(dstv,v[idx+1:])
continue
}
*/
if download {
dstv = append(dstv,v)
}else{
srcv = append(srcv,v)
}
}
hostport := "@" + host + ":" + port
if upload {
if host != "" { xargv = append(xargv,hostport) }
xargv = append(xargv,"PUT")
xargv = append(xargv,srcv[0:]...)
xargv = append(xargv,dstv[0:]...)
//fmt.Printf("--I-- FileCopy PUT gsh://%s/%v < %v // %v\n",hostport,dstv,srcv,xargv)
fmt.Printf("--I-- FileCopy PUT gsh://%s/%v < %v\n",hostport,dstv,srcv)
gsh.RexecClient(xargv)
}else
if download {
if host != "" { xargv = append(xargv,hostport) }
xargv = append(xargv,"GET")
xargv = append(xargv,srcv[0:]...)
xargv = append(xargv,dstv[0:]...)
//fmt.Printf("--I-- FileCopy GET gsh://%v/%v > %v // %v\n",hostport,srcv,dstv,xargv)
fmt.Printf("--I-- FileCopy GET gsh://%v/%v > %v\n",hostport,srcv,dstv)
gsh.RexecClient(xargv)
}else{
}
}
// target
func (gsh*GshContext)Trelpath(rloc string)(string){
cwd, _ := os.Getwd()
os.Chdir(gsh.RWD)
os.Chdir(rloc)
twd, _ := os.Getwd()
os.Chdir(cwd)
tpath := twd + "/" + rloc
return tpath
}
// join to rmote GShell - [user@]host[:port] or cd host:[port]:path
func (gsh*GshContext)Rjoin(argv[]string){
if len(argv) <= 1 {
fmt.Printf("--I-- current server = %v\n",gsh.RSERV)
return
}
serv := argv[1]
servv := strings.Split(serv,":")
if 1 <= len(servv) {
if servv[0] == "lo" {
servv[0] = "localhost"
}
}
switch len(servv) {
case 1:
//if strings.Index(serv,":") < 0 {
serv = servv[0] + ":" + fmt.Sprintf("%d",GSH_PORT)
//}
case 2: // host:port
serv = strings.Join(servv,":")
}
xargv := []string{"rex-join","@"+serv,"HELO"}
rcode,stat := gsh.RexecClient(xargv)
if (rcode / 100) == 2 {
fmt.Printf("--I-- OK Joined (%v) %v\n",rcode,stat)
gsh.RSERV = serv
}else{
fmt.Printf("--I-- NG, could not joined (%v) %v\n",rcode,stat)
}
}
func (gsh*GshContext)Rexec(argv[]string){
if len(argv) <= 1 {
fmt.Printf("--I-- rexec command [ | {file || {command} ]\n",gsh.RSERV)
return
}
/*
nargv := gshScanArg(strings.Join(argv," "),0)
fmt.Printf("--D-- nargc=%d [%v]\n",len(nargv),nargv)
if nargv[1][0] != '{' {
nargv[1] = "{" + nargv[1] + "}"
fmt.Printf("--D-- nargc=%d [%v]\n",len(nargv),nargv)
}
argv = nargv
*/
nargv := []string{}
nargv = append(nargv,"{"+strings.Join(argv[1:]," ")+"}")
fmt.Printf("--D-- nargc=%d %v\n",len(nargv),nargv)
argv = nargv
xargv := []string{"rex-exec","@"+gsh.RSERV,"GET"}
xargv = append(xargv,argv...)
xargv = append(xargv,"/dev/tty")
rcode,stat := gsh.RexecClient(xargv)
if (rcode / 100) == 2 {
fmt.Printf("--I-- OK Rexec (%v) %v\n",rcode,stat)
}else{
fmt.Printf("--I-- NG Rexec (%v) %v\n",rcode,stat)
}
}
func (gsh*GshContext)Rchdir(argv[]string){
if len(argv) <= 1 {
return
}
cwd, _ := os.Getwd()
os.Chdir(gsh.RWD)
os.Chdir(argv[1])
twd, _ := os.Getwd()
gsh.RWD = twd
fmt.Printf("--I-- JWD=%v\n",twd)
os.Chdir(cwd)
}
func (gsh*GshContext)Rpwd(argv[]string){
fmt.Printf("%v\n",gsh.RWD)
}
func (gsh*GshContext)Rls(argv[]string){
cwd, _ := os.Getwd()
os.Chdir(gsh.RWD)
argv[0] = "-ls"
gsh.xFind(argv)
os.Chdir(cwd)
}
func (gsh*GshContext)Rput(argv[]string){
var local string = ""
var remote string = ""
if 1 < len(argv) {
local = argv[1]
remote = local // base name
}
if 2 < len(argv) {
remote = argv[2]
}
fmt.Printf("--I-- jput from=%v to=%v\n",local,gsh.Trelpath(remote))
}
func (gsh*GshContext)Rget(argv[]string){
var remote string = ""
var local string = ""
if 1 < len(argv) {
remote = argv[1]
local = remote // base name
}
if 2 < len(argv) {
local = argv[2]
}
fmt.Printf("--I-- jget from=%v to=%v\n",gsh.Trelpath(remote),local)
}
//
network
// -s, -si, -so // bi-directional, source, sync (maybe socket)
func (gshCtx*GshContext)sconnect(inTCP bool, argv []string) {
gshPA := gshCtx.gshPA
if len(argv) < 2 {
fmt.Printf("Usage: -s [host]:[port[.udp]]\n")
return
}
remote := argv[1]
if remote == ":" { remote = "0.0.0.0:9999" }
if inTCP { // TCP
dport, err := net.ResolveTCPAddr("tcp",remote);
if err != nil {
fmt.Printf("Address error: %s (%s)\n",remote,err)
return
}
conn, err := net.DialTCP("tcp",nil,dport)
if err != nil {
fmt.Printf("Connection error: %s (%s)\n",remote,err)
return
}
file, _ := conn.File();
fd := file.Fd()
fmt.Printf("Socket: connected to %s, socket[%d]\n",remote,fd)
savfd := gshPA.Files[1]
gshPA.Files[1] = fd;
gshCtx.gshellv(argv[2:])
gshPA.Files[1] = savfd
file.Close()
conn.Close()
}else{
//dport, err := net.ResolveUDPAddr("udp4",remote);
dport, err := net.ResolveUDPAddr("udp",remote);
if err != nil {
fmt.Printf("Address error: %s (%s)\n",remote,err)
return
}
//conn, err := net.DialUDP("udp4",nil,dport)
conn, err := net.DialUDP("udp",nil,dport)
if err != nil {
fmt.Printf("Connection error: %s (%s)\n",remote,err)
return
}
file, _ := conn.File();
fd := file.Fd()
ar := conn.RemoteAddr()
//al := conn.LocalAddr()
fmt.Printf("Socket: connected to %s [%s], socket[%d]\n",
remote,ar.String(),fd)
savfd := gshPA.Files[1]
gshPA.Files[1] = fd;
gshCtx.gshellv(argv[2:])
gshPA.Files[1] = savfd
file.Close()
conn.Close()
}
}
func (gshCtx*GshContext)saccept(inTCP bool, argv []string) {
gshPA := gshCtx.gshPA
if len(argv) < 2 {
fmt.Printf("Usage: -ac [host]:[port[.udp]]\n")
return
}
local := argv[1]
if local == ":" { local = "0.0.0.0:9999" }
if inTCP { // TCP
port, err := net.ResolveTCPAddr("tcp",local);
if err != nil {
fmt.Printf("Address error: %s (%s)\n",local,err)
return
}
//fmt.Printf("Listen at %s...\n",local);
sconn, err := net.ListenTCP("tcp", port)
if err != nil {
fmt.Printf("Listen error: %s (%s)\n",local,err)
return
}
//fmt.Printf("Accepting at %s...\n",local);
aconn, err := sconn.AcceptTCP()
if err != nil {
fmt.Printf("Accept error: %s (%s)\n",local,err)
return
}
file, _ := aconn.File()
fd := file.Fd()
fmt.Printf("Accepted TCP at %s [%d]\n",local,fd)
savfd := gshPA.Files[0]
gshPA.Files[0] = fd;
gshCtx.gshellv(argv[2:])
gshPA.Files[0] = savfd
sconn.Close();
aconn.Close();
file.Close();
}else{
//port, err := net.ResolveUDPAddr("udp4",local);
port, err := net.ResolveUDPAddr("udp",local);
if err != nil {
fmt.Printf("Address error: %s (%s)\n",local,err)
return
}
fmt.Printf("Listen UDP at %s...\n",local);
//uconn, err := net.ListenUDP("udp4", port)
uconn, err := net.ListenUDP("udp", port)
if err != nil {
fmt.Printf("Listen error: %s (%s)\n",local,err)
return
}
file, _ := uconn.File()
fd := file.Fd()
ar := uconn.RemoteAddr()
remote := ""
if ar != nil { remote = ar.String() }
if remote == "" { remote = "?" }
// not yet received
//fmt.Printf("Accepted at %s [%d] <- %s\n",local,fd,"")
savfd := gshPA.Files[0]
gshPA.Files[0] = fd;
savenv := gshPA.Env
gshPA.Env = append(savenv, "REMOTE_HOST="+remote)
gshCtx.gshellv(argv[2:])
gshPA.Env = savenv
gshPA.Files[0] = savfd
uconn.Close();
file.Close();
}
}
// empty line command
func (gshCtx*GshContext)xPwd(argv[]string){
// execute context command, pwd + date
// context notation, representation scheme, to be resumed at re-login
cwd, _ := os.Getwd()
switch {
case isin("-a",argv):
gshCtx.ShowChdirHistory(argv)
case isin("-ls",argv):
showFileInfo(cwd,argv)
default:
fmt.Printf("%s\n",cwd)
case isin("-v",argv): // obsolete emtpy command
t := time.Now()
date := t.Format(time.UnixDate)
exe, _ := os.Executable()
host, _ := os.Hostname()
fmt.Printf("{PWD=\"%s\"",cwd)
fmt.Printf(" HOST=\"%s\"",host)
fmt.Printf(" DATE=\"%s\"",date)
fmt.Printf(" TIME=\"%s\"",t.String())
fmt.Printf(" PID=\"%d\"",os.Getpid())
fmt.Printf(" EXE=\"%s\"",exe)
fmt.Printf("}\n")
}
}
//
History
// these should be browsed and edited by HTTP browser
// show the time of command with -t and direcotry with -ls
// openfile-history, sort by -a -m -c
// sort by elapsed time by -t -s
// search by "more" like interface
// edit history
// sort history, and wc or uniq
// CPU and other resource consumptions
// limit showing range (by time or so)
// export / import history
func (gshCtx *GshContext)xHistory(argv []string){
atWorkDirX := -1
if 1 < len(argv) && strBegins(argv[1],"@") {
atWorkDirX,_ = strconv.Atoi(argv[1][1:])
}
//fmt.Printf("--D-- showHistory(%v)\n",argv)
for i, v := range gshCtx.CommandHistory {
// exclude commands not to be listed by default
// internal commands may be suppressed by default
if v.CmdLine == "" && !isin("-a",argv) {
continue;
}
if 0 <= atWorkDirX {
if v.WorkDirX != atWorkDirX {
continue
}
}
if !isin("-n",argv){ // like "fc"
fmt.Printf("!%-2d ",i)
}
if isin("-v",argv){
fmt.Println(v) // should be with it date
}else{
if isin("-l",argv) || isin("-l0",argv) {
elps := v.EndAt.Sub(v.StartAt);
start := v.StartAt.Format(time.Stamp)
fmt.Printf("@%d ",v.WorkDirX)
fmt.Printf("[%v] %11v/t ",start,elps)
}
if isin("-l",argv) && !isin("-l0",argv){
fmt.Printf("%v",Rusagef("%t %u\t// %s",argv,v.Rusagev))
}
if isin("-at",argv) { // isin("-ls",argv){
dhi := v.WorkDirX // workdir history index
fmt.Printf("@%d %s\t",dhi,v.WorkDir)
// show the FileInfo of the output command??
}
fmt.Printf("%s",v.CmdLine)
fmt.Printf("\n")
}
}
}
// !n - history index
func searchHistory(gshCtx GshContext, gline string) (string, bool, bool){
if gline[0] == '!' {
hix, err := strconv.Atoi(gline[1:])
if err != nil {
fmt.Printf("--E-- (%s : range)\n",hix)
return "", false, true
}
if hix < 0 || len(gshCtx.CommandHistory) <= hix {
fmt.Printf("--E-- (%d : out of range)\n",hix)
return "", false, true
}
return gshCtx.CommandHistory[hix].CmdLine, false, false
}
// search
//for i, v := range gshCtx.CommandHistory {
//}
return gline, false, false
}
func (gsh*GshContext)cmdStringInHistory(hix int)(cmd string, ok bool){
if 0 <= hix && hix < len(gsh.CommandHistory) {
return gsh.CommandHistory[hix].CmdLine,true
}
return "",false
}
// temporary adding to PATH environment
// cd name -lib for LD_LIBRARY_PATH
// chdir with directory history (date + full-path)
// -s for sort option (by visit date or so)
func (gsh*GshContext)ShowChdirHistory1(i int,v GChdirHistory, argv []string){
fmt.Printf("!%-2d ",v.CmdIndex) // the first command at this WorkDir
fmt.Printf("@%d ",i)
fmt.Printf("[%v] ",v.MovedAt.Format(time.Stamp))
showFileInfo(v.Dir,argv)
}
func (gsh*GshContext)ShowChdirHistory(argv []string){
for i, v := range gsh.ChdirHistory {
gsh.ShowChdirHistory1(i,v,argv)
}
}
func skipOpts(argv[]string)(int){
for i,v := range argv {
if strBegins(v,"-") {
}else{
return i
}
}
return -1
}
func (gshCtx*GshContext)xChdir(argv []string){
cdhist := gshCtx.ChdirHistory
if isin("?",argv ) || isin("-t",argv) || isin("-a",argv) {
gshCtx.ShowChdirHistory(argv)
return
}
pwd, _ := os.Getwd()
dir := ""
if len(argv) <= 1 {
dir = toFullpath("~")
}else{
i := skipOpts(argv[1:])
if i < 0 {
dir = toFullpath("~")
}else{
dir = argv[1+i]
}
}
if strBegins(dir,"@") {
if dir == "@0" { // obsolete
dir = gshCtx.StartDir
}else
if dir == "@!" {
index := len(cdhist) - 1
if 0 < index { index -= 1 }
dir = cdhist[index].Dir
}else{
index, err := strconv.Atoi(dir[1:])
if err != nil {
fmt.Printf("--E-- xChdir(%v)\n",err)
dir = "?"
}else
if len(gshCtx.ChdirHistory) <= index {
fmt.Printf("--E-- xChdir(history range error)\n")
dir = "?"
}else{
dir = cdhist[index].Dir
}
}
}
if dir != "?" {
err := os.Chdir(dir)
if err != nil {
fmt.Printf("--E-- xChdir(%s)(%v)\n",argv[1],err)
}else{
cwd, _ := os.Getwd()
if cwd != pwd {
hist1 := GChdirHistory { }
hist1.Dir = cwd
hist1.MovedAt = time.Now()
hist1.CmdIndex = len(gshCtx.CommandHistory)+1
gshCtx.ChdirHistory = append(cdhist,hist1)
if !isin("-s",argv){
//cwd, _ := os.Getwd()
//fmt.Printf("%s\n",cwd)
ix := len(gshCtx.ChdirHistory)-1
gshCtx.ShowChdirHistory1(ix,hist1,argv)
}
}
}
}
if isin("-ls",argv){
cwd, _ := os.Getwd()
showFileInfo(cwd,argv);
}
}
func TimeValSub(tv1 *syscall.Timeval, tv2 *syscall.Timeval){
*tv1 = syscall.NsecToTimeval(tv1.Nano() - tv2.Nano())
}
func RusageSubv(ru1, ru2 [2]syscall.Rusage)([2]syscall.Rusage){
TimeValSub(&ru1[0].Utime,&ru2[0].Utime)
TimeValSub(&ru1[0].Stime,&ru2[0].Stime)
TimeValSub(&ru1[1].Utime,&ru2[1].Utime)
TimeValSub(&ru1[1].Stime,&ru2[1].Stime)
return ru1
}
func TimeValAdd(tv1 syscall.Timeval, tv2 syscall.Timeval)(syscall.Timeval){
tvs := syscall.NsecToTimeval(tv1.Nano() + tv2.Nano())
return tvs
}
/*
func RusageAddv(ru1, ru2 [2]syscall.Rusage)([2]syscall.Rusage){
TimeValAdd(ru1[0].Utime,ru2[0].Utime)
TimeValAdd(ru1[0].Stime,ru2[0].Stime)
TimeValAdd(ru1[1].Utime,ru2[1].Utime)
TimeValAdd(ru1[1].Stime,ru2[1].Stime)
return ru1
}
*/
//
Resource Usage
func sRusagef(fmtspec string, argv []string, ru [2]syscall.Rusage)(string){
// ru[0] self , ru[1] children
ut := TimeValAdd(ru[0].Utime,ru[1].Utime)
st := TimeValAdd(ru[0].Stime,ru[1].Stime)
uu := (ut.Sec*1000000 + int64(ut.Usec)) * 1000
su := (st.Sec*1000000 + int64(st.Usec)) * 1000
tu := uu + su
ret := fmt.Sprintf("%v/sum",abbtime(tu))
ret += fmt.Sprintf(", %v/usr",abbtime(uu))
ret += fmt.Sprintf(", %v/sys",abbtime(su))
return ret
}
func Rusagef(fmtspec string, argv []string, ru [2]syscall.Rusage)(string){
ut := TimeValAdd(ru[0].Utime,ru[1].Utime)
st := TimeValAdd(ru[0].Stime,ru[1].Stime)
fmt.Printf("%d.%06ds/u ",ut.Sec,ut.Usec) //ru[1].Utime.Sec,ru[1].Utime.Usec)
fmt.Printf("%d.%06ds/s ",st.Sec,st.Usec) //ru[1].Stime.Sec,ru[1].Stime.Usec)
return ""
}
func Getrusagev()([2]syscall.Rusage){
var ruv = [2]syscall.Rusage{}
syscall.Getrusage(syscall.RUSAGE_SELF,&ruv[0])
syscall.Getrusage(syscall.RUSAGE_CHILDREN,&ruv[1])
return ruv
}
func showRusage(what string,argv []string, ru *syscall.Rusage){
fmt.Printf("%s: ",what);
fmt.Printf("Usr=%d.%06ds",ru.Utime.Sec,ru.Utime.Usec)
fmt.Printf(" Sys=%d.%06ds",ru.Stime.Sec,ru.Stime.Usec)
fmt.Printf(" Rss=%vB",ru.Maxrss)
if isin("-l",argv) {
fmt.Printf(" MinFlt=%v",ru.Minflt)
fmt.Printf(" MajFlt=%v",ru.Majflt)
fmt.Printf(" IxRSS=%vB",ru.Ixrss)
fmt.Printf(" IdRSS=%vB",ru.Idrss)
fmt.Printf(" Nswap=%vB",ru.Nswap)
fmt.Printf(" Read=%v",ru.Inblock)
fmt.Printf(" Write=%v",ru.Oublock)
}
fmt.Printf(" Snd=%v",ru.Msgsnd)
fmt.Printf(" Rcv=%v",ru.Msgrcv)
//if isin("-l",argv) {
fmt.Printf(" Sig=%v",ru.Nsignals)
//}
fmt.Printf("\n");
}
func (gshCtx *GshContext)xTime(argv[]string)(bool){
if 2 <= len(argv){
gshCtx.LastRusage = syscall.Rusage{}
rusagev1 := Getrusagev()
fin := gshCtx.gshellv(argv[1:])
rusagev2 := Getrusagev()
showRusage(argv[1],argv,&gshCtx.LastRusage)
rusagev := RusageSubv(rusagev2,rusagev1)
showRusage("self",argv,&rusagev[0])
showRusage("chld",argv,&rusagev[1])
return fin
}else{
rusage:= syscall.Rusage {}
syscall.Getrusage(syscall.RUSAGE_SELF,&rusage)
showRusage("self",argv, &rusage)
syscall.Getrusage(syscall.RUSAGE_CHILDREN,&rusage)
showRusage("chld",argv, &rusage)
return false
}
}
func (gshCtx *GshContext)xJobs(argv[]string){
fmt.Printf("%d Jobs\n",len(gshCtx.BackGroundJobs))
for ji, pid := range gshCtx.BackGroundJobs {
//wstat := syscall.WaitStatus {0}
rusage := syscall.Rusage {}
//wpid, err := syscall.Wait4(pid,&wstat,syscall.WNOHANG,&rusage);
wpid, err := syscall.Wait4(pid,nil,syscall.WNOHANG,&rusage);
if err != nil {
fmt.Printf("--E-- %%%d [%d] (%v)\n",ji,pid,err)
}else{
fmt.Printf("%%%d[%d](%d)\n",ji,pid,wpid)
showRusage("chld",argv,&rusage)
}
}
}
func (gsh*GshContext)inBackground(argv[]string)(bool){
if gsh.CmdTrace { fmt.Printf("--I-- inBackground(%v)\n",argv) }
gsh.BackGround = true // set background option
xfin := false
xfin = gsh.gshellv(argv)
gsh.BackGround = false
return xfin
}
// -o file without command means just opening it and refer by #N
// should be listed by "files" comnmand
func (gshCtx*GshContext)xOpen(argv[]string){
var pv = []int{-1,-1}
err := syscall.Pipe(pv)
fmt.Printf("--I-- pipe()=[#%d,#%d](%v)\n",pv[0],pv[1],err)
}
func (gshCtx*GshContext)fromPipe(argv[]string){
}
func (gshCtx*GshContext)xClose(argv[]string){
}
//
redirect
func (gshCtx*GshContext)redirect(argv[]string)(bool){
if len(argv) < 2 {
return false
}
cmd := argv[0]
fname := argv[1]
var file *os.File = nil
fdix := 0
mode := os.O_RDONLY
switch {
case cmd == "-i" || cmd == "<":
fdix = 0
mode = os.O_RDONLY
case cmd == "-o" || cmd == ">":
fdix = 1
mode = os.O_RDWR | os.O_CREATE
case cmd == "-a" || cmd == ">>":
fdix = 1
mode = os.O_RDWR | os.O_CREATE | os.O_APPEND
}
if fname[0] == '#' {
fd, err := strconv.Atoi(fname[1:])
if err != nil {
fmt.Printf("--E-- (%v)\n",err)
return false
}
file = os.NewFile(uintptr(fd),"MaybePipe")
}else{
xfile, err := os.OpenFile(argv[1], mode, 0600)
if err != nil {
fmt.Printf("--E-- (%s)\n",err)
return false
}
file = xfile
}
gshPA := gshCtx.gshPA
savfd := gshPA.Files[fdix]
gshPA.Files[fdix] = file.Fd()
fmt.Printf("--I-- Opened [%d] %s\n",file.Fd(),argv[1])
gshCtx.gshellv(argv[2:])
gshPA.Files[fdix] = savfd
return false
}
//fmt.Fprintf(res, "GShell Status: %q", html.EscapeString(req.URL.Path))
func httpHandler(res http.ResponseWriter, req *http.Request){
path := req.URL.Path
fmt.Printf("--I-- Got HTTP Request(%s)\n",path)
{
gshCtxBuf, _ := setupGshContext()
gshCtx := &gshCtxBuf
fmt.Printf("--I-- %s\n",path[1:])
gshCtx.tgshelll(path[1:])
}
fmt.Fprintf(res, "Hello(^-^)/\n%s\n",path)
}
func (gshCtx *GshContext) httpServer(argv []string){
http.HandleFunc("/", httpHandler)
accport := "localhost:9999"
fmt.Printf("--I-- HTTP Server Start at [%s]\n",accport)
http.ListenAndServe(accport,nil)
}
func (gshCtx *GshContext)xGo(argv[]string){
go gshCtx.gshellv(argv[1:]);
}
func (gshCtx *GshContext) xPs(argv[]string)(){
}
//
Plugin
// plugin [-ls [names]] to list plugins
// Reference:
plugin source code
func (gshCtx *GshContext) whichPlugin(name string,argv[]string)(pi *PluginInfo){
pi = nil
for _,p := range gshCtx.PluginFuncs {
if p.Name == name && pi == nil {
pi = &p
}
if !isin("-s",argv){
//fmt.Printf("%v %v ",i,p)
if isin("-ls",argv){
showFileInfo(p.Path,argv)
}else{
fmt.Printf("%s\n",p.Name)
}
}
}
return pi
}
func (gshCtx *GshContext) xPlugin(argv[]string) (error) {
if len(argv) == 0 || argv[0] == "-ls" {
gshCtx.whichPlugin("",argv)
return nil
}
name := argv[0]
Pin := gshCtx.whichPlugin(name,[]string{"-s"})
if Pin != nil {
os.Args = argv // should be recovered?
Pin.Addr.(func())()
return nil
}
sofile := toFullpath(argv[0] + ".so") // or find it by which($PATH)
p, err := plugin.Open(sofile)
if err != nil {
fmt.Printf("--E-- plugin.Open(%s)(%v)\n",sofile,err)
return err
}
fname := "Main"
f, err := p.Lookup(fname)
if( err != nil ){
fmt.Printf("--E-- plugin.Lookup(%s)(%v)\n",fname,err)
return err
}
pin := PluginInfo {p,f,name,sofile}
gshCtx.PluginFuncs = append(gshCtx.PluginFuncs,pin)
fmt.Printf("--I-- added (%d)\n",len(gshCtx.PluginFuncs))
//fmt.Printf("--I-- first call(%s:%s)%v\n",sofile,fname,argv)
os.Args = argv
f.(func())()
return err
}
func (gshCtx*GshContext)Args(argv[]string){
for i,v := range os.Args {
fmt.Printf("[%v] %v\n",i,v)
}
}
func (gshCtx *GshContext) showVersion(argv[]string){
if isin("-l",argv) {
fmt.Printf("%v/%v (%v)",NAME,VERSION,DATE);
}else{
fmt.Printf("%v",VERSION);
}
if isin("-a",argv) {
fmt.Printf(" %s",AUTHOR)
}
if !isin("-n",argv) {
fmt.Printf("\n")
}
}
//
Scanf // string decomposer
// scanf [format] [input]
func scanv(sstr string)(strv[]string){
strv = strings.Split(sstr," ")
return strv
}
func scanUntil(src,end string)(rstr string,leng int){
idx := strings.Index(src,end)
if 0 <= idx {
rstr = src[0:idx]
return rstr,idx+len(end)
}
return src,0
}
// -bn -- display base-name part only // can be in some %fmt, for sed rewriting
func (gsh*GshContext)printVal(fmts string, vstr string, optv[]string){
//vint,err := strconv.Atoi(vstr)
var ival int64 = 0
n := 0
err := error(nil)
if strBegins(vstr,"_") {
vx,_ := strconv.Atoi(vstr[1:])
if vx < len(gsh.iValues) {
vstr = gsh.iValues[vx]
}else{
}
}
// should use Eval()
if strBegins(vstr,"0x") {
n,err = fmt.Sscanf(vstr[2:],"%x",&ival)
}else{
n,err = fmt.Sscanf(vstr,"%d",&ival)
//fmt.Printf("--D-- n=%d err=(%v) {%s}=%v\n",n,err,vstr, ival)
}
if n == 1 && err == nil {
//fmt.Printf("--D-- formatn(%v) ival(%v)\n",fmts,ival)
fmt.Printf("%"+fmts,ival)
}else{
if isin("-bn",optv){
fmt.Printf("%"+fmts,filepath.Base(vstr))
}else{
fmt.Printf("%"+fmts,vstr)
}
}
}
func (gsh*GshContext)printfv(fmts,div string,argv[]string,optv[]string,list[]string){
//fmt.Printf("{%d}",len(list))
//curfmt := "v"
outlen := 0
curfmt := gsh.iFormat
if 0 < len(fmts) {
for xi := 0; xi < len(fmts); xi++ {
fch := fmts[xi]
if fch == '%' {
if xi+1 < len(fmts) {
curfmt = string(fmts[xi+1])
gsh.iFormat = curfmt
xi += 1
if xi+1 < len(fmts) && fmts[xi+1] == '(' {
vals,leng := scanUntil(fmts[xi+2:],")")
//fmt.Printf("--D-- show fmt(%v) val(%v) next(%v)\n",curfmt,vals,leng)
gsh.printVal(curfmt,vals,optv)
xi += 2+leng-1
outlen += 1
}
continue
}
}
if fch == '_' {
hi,leng := scanInt(fmts[xi+1:])
if 0 < leng {
if hi < len(gsh.iValues) {
gsh.printVal(curfmt,gsh.iValues[hi],optv)
outlen += 1 // should be the real length
}else{
fmt.Printf("((out-range))")
}
xi += leng
continue;
}
}
fmt.Printf("%c",fch)
outlen += 1
}
}else{
//fmt.Printf("--D-- print {%s}\n")
for i,v := range list {
if 0 < i {
fmt.Printf(div)
}
gsh.printVal(curfmt,v,optv)
outlen += 1
}
}
if 0 < outlen {
fmt.Printf("\n")
}
}
func (gsh*GshContext)Scanv(argv[]string){
//fmt.Printf("--D-- Scanv(%v)\n",argv)
if len(argv) == 1 {
return
}
argv = argv[1:]
fmts := ""
if strBegins(argv[0],"-F") {
fmts = argv[0]
gsh.iDelimiter = fmts
argv = argv[1:]
}
input := strings.Join(argv," ")
if fmts == "" { // simple decomposition
v := scanv(input)
gsh.iValues = v
//fmt.Printf("%v\n",strings.Join(v,","))
}else{
v := make([]string,8)
n,err := fmt.Sscanf(input,fmts,&v[0],&v[1],&v[2],&v[3])
fmt.Printf("--D-- Scanf ->(%v) n=%d err=(%v)\n",v,n,err)
gsh.iValues = v
}
}
func (gsh*GshContext)Printv(argv[]string){
if false { //@@U
fmt.Printf("%v\n",strings.Join(argv[1:]," "))
return
}
//fmt.Printf("--D-- Printv(%v)\n",argv)
//fmt.Printf("%v\n",strings.Join(gsh.iValues,","))
div := gsh.iDelimiter
fmts := ""
argv = argv[1:]
if 0 < len(argv) {
if strBegins(argv[0],"-F") {
div = argv[0][2:]
argv = argv[1:]
}
}
optv := []string{}
for _,v := range argv {
if strBegins(v,"-"){
optv = append(optv,v)
argv = argv[1:]
}else{
break;
}
}
if 0 < len(argv) {
fmts = strings.Join(argv," ")
}
gsh.printfv(fmts,div,argv,optv,gsh.iValues)
}
func (gsh*GshContext)Basename(argv[]string){
for i,v := range gsh.iValues {
gsh.iValues[i] = filepath.Base(v)
}
}
func (gsh*GshContext)Sortv(argv[]string){
sv := gsh.iValues
sort.Slice(sv , func(i,j int) bool {
return sv[i] < sv[j]
})
}
func (gsh*GshContext)Shiftv(argv[]string){
vi := len(gsh.iValues)
if 0 < vi {
if isin("-r",argv) {
top := gsh.iValues[0]
gsh.iValues = append(gsh.iValues[1:],top)
}else{
gsh.iValues = gsh.iValues[1:]
}
}
}
func (gsh*GshContext)Enq(argv[]string){
}
func (gsh*GshContext)Deq(argv[]string){
}
func (gsh*GshContext)Push(argv[]string){
gsh.iValStack = append(gsh.iValStack,argv[1:])
fmt.Printf("depth=%d\n",len(gsh.iValStack))
}
func (gsh*GshContext)Dump(argv[]string){
for i,v := range gsh.iValStack {
fmt.Printf("%d %v\n",i,v)
}
}
func (gsh*GshContext)Pop(argv[]string){
depth := len(gsh.iValStack)
if 0 < depth {
v := gsh.iValStack[depth-1]
if isin("-cat",argv){
gsh.iValues = append(gsh.iValues,v...)
}else{
gsh.iValues = v
}
gsh.iValStack = gsh.iValStack[0:depth-1]
fmt.Printf("depth=%d %s\n",len(gsh.iValStack),gsh.iValues)
}else{
fmt.Printf("depth=%d\n",depth)
}
}
//
Command Interpreter
func (gshCtx*GshContext)gshellv(argv []string) (fin bool) {
fin = false
if gshCtx.CmdTrace { fmt.Fprintf(os.Stderr,"--I-- gshellv((%d))\n",len(argv)) }
if len(argv) <= 0 {
return false
}
xargv := []string{}
for ai := 0; ai < len(argv); ai++ {
xargv = append(xargv,strsubst(gshCtx,argv[ai],false))
}
argv = xargv
if false {
for ai := 0; ai < len(argv); ai++ {
fmt.Printf("[%d] %s [%d]%T\n",
ai,argv[ai],len(argv[ai]),argv[ai])
}
}
cmd := argv[0]
if gshCtx.CmdTrace { fmt.Fprintf(os.Stderr,"--I-- gshellv(%d)%v\n",len(argv),argv) }
switch { // https://tour.golang.org/flowcontrol/11
case cmd == "":
gshCtx.xPwd([]string{}); // emtpy command
case cmd == "-x":
gshCtx.CmdTrace = ! gshCtx.CmdTrace
case cmd == "-xt":
gshCtx.CmdTime = ! gshCtx.CmdTime
case cmd == "-ot":
gshCtx.sconnect(true, argv)
case cmd == "-ou":
gshCtx.sconnect(false, argv)
case cmd == "-it":
gshCtx.saccept(true , argv)
case cmd == "-iu":
gshCtx.saccept(false, argv)
case cmd == "-i" || cmd == "<" || cmd == "-o" || cmd == ">" || cmd == "-a" || cmd == ">>" || cmd == "-s" || cmd == "><":
gshCtx.redirect(argv)
case cmd == "|":
gshCtx.fromPipe(argv)
case cmd == "args":
gshCtx.Args(argv)
case cmd == "bg" || cmd == "-bg":
rfin := gshCtx.inBackground(argv[1:])
return rfin
case cmd == "-bn":
gshCtx.Basename(argv)
case cmd == "call":
_,_ = gshCtx.excommand(false,argv[1:])
case cmd == "cd" || cmd == "chdir":
gshCtx.xChdir(argv);
case cmd == "-cksum":
gshCtx.xFind(argv)
case cmd == "-sum":
gshCtx.xFind(argv)
case cmd == "-sumtest":
str := ""
if 1 < len(argv) { str = argv[1] }
crc := strCRC32(str,uint64(len(str)))
fprintf(stderr,"%v %v\n",crc,len(str))
case cmd == "close":
gshCtx.xClose(argv)
case cmd == "gcp":
gshCtx.FileCopy(argv)
case cmd == "dec" || cmd == "decode":
gshCtx.Dec(argv)
case cmd == "#define":
case cmd == "dic" || cmd == "d":
xDic(argv)
case cmd == "dump":
gshCtx.Dump(argv)
case cmd == "echo" || cmd == "e":
echo(argv,true)
case cmd == "enc" || cmd == "encode":
gshCtx.Enc(argv)
case cmd == "env":
env(argv)
case cmd == "eval":
xEval(argv[1:],true)
case cmd == "ev" || cmd == "events":
dumpEvents(argv)
case cmd == "exec":
_,_ = gshCtx.excommand(true,argv[1:])
// should not return here
case cmd == "exit" || cmd == "quit":
// write Result code EXIT to 3>
return true
case cmd == "fdls":
// dump the attributes of fds (of other process)
case cmd == "-find" || cmd == "fin" || cmd == "ufind" || cmd == "uf":
gshCtx.xFind(argv[1:])
case cmd == "fu":
gshCtx.xFind(argv[1:])
case cmd == "fork":
// mainly for a server
case cmd == "-gen":
gshCtx.gen(argv)
case cmd == "-go":
gshCtx.xGo(argv)
case cmd == "-grep":
gshCtx.xFind(argv)
case cmd == "gdeq":
gshCtx.Deq(argv)
case cmd == "genq":
gshCtx.Enq(argv)
case cmd == "gpop":
gshCtx.Pop(argv)
case cmd == "gpush":
gshCtx.Push(argv)
case cmd == "history" || cmd == "hi": // hi should be alias
gshCtx.xHistory(argv)
case cmd == "jobs":
gshCtx.xJobs(argv)
case cmd == "lnsp" || cmd == "nlsp":
gshCtx.SplitLine(argv)
case cmd == "-ls":
gshCtx.xFind(argv)
case cmd == "nop":
// do nothing
case cmd == "pipe":
gshCtx.xOpen(argv)
case cmd == "plug" || cmd == "plugin" || cmd == "pin":
gshCtx.xPlugin(argv[1:])
case cmd == "print" || cmd == "-pr":
// output internal slice // also sprintf should be
gshCtx.Printv(argv)
case cmd == "ps":
gshCtx.xPs(argv)
case cmd == "pstitle":
// to be gsh.title
case cmd == "rexecd" || cmd == "rexd":
gshCtx.RexecServer(argv)
case cmd == "rexec" || cmd == "rex":
gshCtx.RexecClient(argv)
case cmd == "repeat" || cmd == "rep": // repeat cond command
gshCtx.repeat(argv)
case cmd == "replay":
gshCtx.xReplay(argv)
case cmd == "scan":
// scan input (or so in fscanf) to internal slice (like Files or map)
gshCtx.Scanv(argv)
case cmd == "set":
// set name ...
case cmd == "serv":
gshCtx.httpServer(argv)
case cmd == "shift":
gshCtx.Shiftv(argv)
case cmd == "sleep":
gshCtx.sleep(argv)
case cmd == "-sort":
gshCtx.Sortv(argv)
case cmd == "j" || cmd == "join":
gshCtx.Rjoin(argv)
case cmd == "a" || cmd == "alpa":
gshCtx.Rexec(argv)
case cmd == "jcd" || cmd == "jchdir":
gshCtx.Rchdir(argv)
case cmd == "jget":
gshCtx.Rget(argv)
case cmd == "jls":
gshCtx.Rls(argv)
case cmd == "jput":
gshCtx.Rput(argv)
case cmd == "jpwd":
gshCtx.Rpwd(argv)
case cmd == "time":
fin = gshCtx.xTime(argv)
case cmd == "ungets":
if 1 < len(argv) {
ungets(argv[1]+"\n")
}else{
}
case cmd == "pwd":
gshCtx.xPwd(argv);
case cmd == "ver" || cmd == "-ver" || cmd == "version":
gshCtx.showVersion(argv)
case cmd == "where":
// data file or so?
case cmd == "which":
which("PATH",argv);
default:
if gshCtx.whichPlugin(cmd,[]string{"-s"}) != nil {
gshCtx.xPlugin(argv)
}else{
notfound,_ := gshCtx.excommand(false,argv)
if notfound {
fmt.Printf("--E-- command not found (%v)\n",cmd)
}
}
}
return fin
}
func (gsh*GshContext)gshelll(gline string) (rfin bool) {
argv := strings.Split(string(gline)," ")
fin := gsh.gshellv(argv)
return fin
}
func (gsh*GshContext)tgshelll(gline string)(xfin bool){
start := time.Now()
fin := gsh.gshelll(gline)
end := time.Now()
elps := end.Sub(start);
if gsh.CmdTime {
fmt.Printf("--T-- " + time.Now().Format(time.Stamp) + "(%d.%09ds)\n",
elps/1000000000,elps%1000000000)
}
return fin
}
func Ttyid() (int) {
fi, err := os.Stdin.Stat()
if err != nil {
return 0;
}
//fmt.Printf("Stdin: %v Dev=%d\n",
// fi.Mode(),fi.Mode()&os.ModeDevice)
if (fi.Mode() & os.ModeDevice) != 0 {
stat := syscall.Stat_t{};
err := syscall.Fstat(0,&stat)
if err != nil {
//fmt.Printf("--I-- Stdin: (%v)\n",err)
}else{
//fmt.Printf("--I-- Stdin: rdev=%d %d\n",
// stat.Rdev&0xFF,stat.Rdev);
//fmt.Printf("--I-- Stdin: tty%d\n",stat.Rdev&0xFF);
return int(stat.Rdev & 0xFF)
}
}
return 0
}
func (gshCtx *GshContext) ttyfile() string {
//fmt.Printf("--I-- GSH_HOME=%s\n",gshCtx.GshHomeDir)
ttyfile := gshCtx.GshHomeDir + "/" + "gsh-tty" +
fmt.Sprintf("%02d",gshCtx.TerminalId)
//strconv.Itoa(gshCtx.TerminalId)
//fmt.Printf("--I-- ttyfile=%s\n",ttyfile)
return ttyfile
}
func (gshCtx *GshContext) ttyline()(*os.File){
file, err := os.OpenFile(gshCtx.ttyfile(),os.O_RDWR|os.O_CREATE|os.O_TRUNC,0600)
if err != nil {
fmt.Printf("--F-- cannot open %s (%s)\n",gshCtx.ttyfile(),err)
return file;
}
return file
}
func (gshCtx *GshContext)getline(hix int, skipping bool, prevline string) (string) {
if( skipping ){
reader := bufio.NewReaderSize(os.Stdin,LINESIZE)
line, _, _ := reader.ReadLine()
return string(line)
}else
if true {
return xgetline(hix,prevline,gshCtx)
}
/*
else
if( with_exgetline && gshCtx.GetLine != "" ){
//var xhix int64 = int64(hix); // cast
newenv := os.Environ()
newenv = append(newenv, "GSH_LINENO="+strconv.FormatInt(int64(hix),10) )
tty := gshCtx.ttyline()
tty.WriteString(prevline)
Pa := os.ProcAttr {
"", // start dir
newenv, //os.Environ(),
[]*os.File{os.Stdin,os.Stdout,os.Stderr,tty},
nil,
}
//fmt.Printf("--I-- getline=%s // %s\n",gsh_getlinev[0],gshCtx.GetLine)
proc, err := os.StartProcess(gsh_getlinev[0],[]string{"getline","getline"},&Pa)
if err != nil {
fmt.Printf("--F-- getline process error (%v)\n",err)
// for ; ; { }
return "exit (getline program failed)"
}
//stat, err := proc.Wait()
proc.Wait()
buff := make([]byte,LINESIZE)
count, err := tty.Read(buff)
//_, err = tty.Read(buff)
//fmt.Printf("--D-- getline (%d)\n",count)
if err != nil {
if ! (count == 0) { // && err.String() == "EOF" ) {
fmt.Printf("--E-- getline error (%s)\n",err)
}
}else{
//fmt.Printf("--I-- getline OK \"%s\"\n",buff)
}
tty.Close()
gline := string(buff[0:count])
return gline
}else
*/
{
// if isatty {
fmt.Printf("!%d",hix)
fmt.Print(PROMPT)
// }
reader := bufio.NewReaderSize(os.Stdin,LINESIZE)
line, _, _ := reader.ReadLine()
return string(line)
}
}
//== begin ======================================================= getline
/*
* getline.c
* 2020-0819 extracted from dog.c
* getline.go
* 2020-0822 ported to Go
*/
/*
package main // getline main
import (
"fmt" //
fmt
"strings" //
strings
"os" //
os
"syscall" //
syscall
//"bytes" //
os
//"os/exec" //
os
)
*/
// C language compatibility functions
var errno = 0
var stdin *os.File = os.Stdin
var stdout *os.File = os.Stdout
var stderr *os.File = os.Stderr
var EOF = -1
var NULL = 0
type FILE os.File
type StrBuff []byte
var NULL_FP *os.File = nil
var NULLSP = 0
//var LINESIZE = 1024
func system(cmdstr string)(int){
PA := syscall.ProcAttr {
"", // the starting directory
os.Environ(),
[]uintptr{os.Stdin.Fd(),os.Stdout.Fd(),os.Stderr.Fd()},
nil,
}
argv := strings.Split(cmdstr," ")
pid,err := syscall.ForkExec(argv[0],argv,&PA)
if( err != nil ){
fmt.Printf("--E-- syscall(%v) err(%v)\n",cmdstr,err)
}
syscall.Wait4(pid,nil,0,nil)
/*
argv := strings.Split(cmdstr," ")
fmt.Fprintf(os.Stderr,"--I-- system(%v)\n",argv)
//cmd := exec.Command(argv[0:]...)
cmd := exec.Command(argv[0],argv[1],argv[2])
cmd.Stdin = strings.NewReader("output of system")
var out bytes.Buffer
cmd.Stdout = &out
var serr bytes.Buffer
cmd.Stderr = &serr
err := cmd.Run()
if err != nil {
fmt.Fprintf(os.Stderr,"--E-- system(%v)err(%v)\n",argv,err)
fmt.Printf("ERR:%s\n",serr.String())
}else{
fmt.Printf("%s",out.String())
}
*/
return 0
}
func atoi(str string)(ret int){
ret,err := fmt.Sscanf(str,"%d",ret)
if err == nil {
return ret
}else{
// should set errno
return 0
}
}
func getenv(name string)(string){
val,got := os.LookupEnv(name)
if got {
return val
}else{
return "?"
}
}
func strcpy(dst StrBuff, src string){
var i int
srcb := []byte(src)
for i = 0; i < len(src) && srcb[i] != 0; i++ {
dst[i] = srcb[i]
}
dst[i] = 0
}
func xstrcpy(dst StrBuff, src StrBuff){
dst = src
}
func strcat(dst StrBuff, src StrBuff){
dst = append(dst,src...)
}
func strdup(str StrBuff)(string){
return string(str[0:strlen(str)])
}
func sstrlen(str string)(int){
return len(str)
}
func strlen(str StrBuff)(int){
var i int
for i = 0; i < len(str) && str[i] != 0; i++ {
}
return i
}
func sizeof(data StrBuff)(int){
return len(data)
}
func isatty(fd int)(ret int){
return 1
}
func fopen(file string,mode string)(fp*os.File){
if mode == "r" {
fp,err := os.Open(file)
if( err != nil ){
fmt.Printf("--E-- fopen(%s,%s)=(%v)\n",file,mode,err)
return NULL_FP;
}
return fp;
}else{
fp,err := os.OpenFile(file,os.O_RDWR|os.O_CREATE|os.O_TRUNC,0600)
if( err != nil ){
return NULL_FP;
}
return fp;
}
}
func fclose(fp*os.File){
fp.Close()
}
func fflush(fp *os.File)(int){
return 0
}
func fgetc(fp*os.File)(int){
var buf [1]byte
_,err := fp.Read(buf[0:1])
if( err != nil ){
return EOF;
}else{
return int(buf[0])
}
}
func sfgets(str*string, size int, fp*os.File)(int){
buf := make(StrBuff,size)
var ch int
var i int
for i = 0; i < len(buf)-1; i++ {
ch = fgetc(fp)
//fprintf(stderr,"--fgets %d/%d %X\n",i,len(buf),ch)
if( ch == EOF ){
break;
}
buf[i] = byte(ch);
if( ch == '\n' ){
break;
}
}
buf[i] = 0
//fprintf(stderr,"--fgets %d/%d (%s)\n",i,len(buf),buf[0:i])
return i
}
func fgets(buf StrBuff, size int, fp*os.File)(int){
var ch int
var i int
for i = 0; i < len(buf)-1; i++ {
ch = fgetc(fp)
//fprintf(stderr,"--fgets %d/%d %X\n",i,len(buf),ch)
if( ch == EOF ){
break;
}
buf[i] = byte(ch);
if( ch == '\n' ){
break;
}
}
buf[i] = 0
//fprintf(stderr,"--fgets %d/%d (%s)\n",i,len(buf),buf[0:i])
return i
}
func fputc(ch int , fp*os.File)(int){
var buf [1]byte
buf[0] = byte(ch)
fp.Write(buf[0:1])
return 0
}
func fputs(buf StrBuff, fp*os.File)(int){
fp.Write(buf)
return 0
}
func xfputss(str string, fp*os.File)(int){
return fputs([]byte(str),fp)
}
func sscanf(str StrBuff,fmts string, params ...interface{})(int){
fmt.Sscanf(string(str[0:strlen(str)]),fmts,params...)
return 0
}
func fprintf(fp*os.File,fmts string, params ...interface{})(int){
fmt.Fprintf(fp,fmts,params...)
return 0
}
//
Command Line IME
//----------------------------------------------------------------------- MyIME
var MyIMEVER = "MyIME/0.0.2";
type RomKana struct {
dic string // dictionaly ID
pat string // input pattern
out string // output pattern
hit int64 // count of hit and used
}
var dicents = 0
var romkana [1024]RomKana
var Romkan []RomKana
func isinDic(str string)(int){
for i,v := range Romkan {
if v.pat == str {
return i
}
}
return -1
}
const (
DIC_COM_LOAD = "im"
DIC_COM_DUMP = "s"
DIC_COM_LIST = "ls"
DIC_COM_ENA = "en"
DIC_COM_DIS = "di"
)
func helpDic(argv []string){
out := stderr
cmd := ""
if 0 < len(argv) { cmd = argv[0] }
fprintf(out,"--- %v Usage\n",cmd)
fprintf(out,"... Commands\n")
fprintf(out,"... %v %-3v [dicName] [dicURL ] -- Import dictionary\n",cmd,DIC_COM_LOAD)
fprintf(out,"... %v %-3v [pattern] -- Search in dictionary\n",cmd,DIC_COM_DUMP)
fprintf(out,"... %v %-3v [dicName] -- List dictionaries\n",cmd,DIC_COM_LIST)
fprintf(out,"... %v %-3v [dicName] -- Disable dictionaries\n",cmd,DIC_COM_DIS)
fprintf(out,"... %v %-3v [dicName] -- Enable dictionaries\n",cmd,DIC_COM_ENA)
fprintf(out,"... Keys ... %v\n","ESC can be used for '\\'")
fprintf(out,"... \\c -- Reverse the case of the last character\n",)
fprintf(out,"... \\i -- Replace input with translated text\n",)
fprintf(out,"... \\j -- On/Off translation mode\n",)
fprintf(out,"... \\l -- Force Lower Case\n",)
fprintf(out,"... \\u -- Force Upper Case (software CapsLock)\n",)
fprintf(out,"... \\v -- Show translation actions\n",)
fprintf(out,"... \\x -- Replace the last input character with it Hexa-Decimal\n",)
}
func xDic(argv[]string){
if len(argv) <= 1 {
helpDic(argv)
return
}
argv = argv[1:]
var debug = false
var info = false
var silent = false
var dump = false
var builtin = false
cmd := argv[0]
argv = argv[1:]
opt := ""
arg := ""
if 0 < len(argv) {
arg1 := argv[0]
if arg1[0] == '-' {
switch arg1 {
default: fmt.Printf("--Ed-- Unknown option(%v)\n",arg1)
return
case "-b": builtin = true
case "-d": debug = true
case "-s": silent = true
case "-v": info = true
}
opt = arg1
argv = argv[1:]
}
}
dicName := ""
dicURL := ""
if 0 < len(argv) {
arg = argv[0]
dicName = arg
argv = argv[1:]
}
if 0 < len(argv) {
dicURL = argv[0]
argv = argv[1:]
}
if false {
fprintf(stderr,"--Dd-- com(%v) opt(%v) arg(%v)\n",cmd,opt,arg)
}
if cmd == DIC_COM_LOAD {
//dicType := ""
dicBody := ""
if !builtin && dicName != "" && dicURL == "" {
f,err := os.Open(dicName)
if err == nil {
dicURL = dicName
}else{
f,err = os.Open(dicName+".html")
if err == nil {
dicURL = dicName+".html"
}else{
f,err = os.Open("gshdic-"+dicName+".html")
if err == nil {
dicURL = "gshdic-"+dicName+".html"
}
}
}
if err == nil {
var buf = make([]byte,128*1024)
count,err := f.Read(buf)
f.Close()
if info {
fprintf(stderr,"--Id-- ReadDic(%v,%v)\n",count,err)
}
dicBody = string(buf[0:count])
}
}
if dicBody == "" {
switch arg {
default:
dicName = "WorldDic"
dicURL = WorldDic
if info {
fprintf(stderr,"--Id-- default dictionary \"%v\"\n",
dicName);
}
case "wnn":
dicName = "WnnDic"
dicURL = WnnDic
case "sumomo":
dicName = "SumomoDic"
dicURL = SumomoDic
case "sijimi":
dicName = "SijimiDic"
dicURL = SijimiDic
case "jkl":
dicName = "JKLJaDic"
dicURL = JA_JKLDic
}
if debug {
fprintf(stderr,"--Id-- %v URL=%v\n\n",dicName,dicURL);
}
dicv := strings.Split(dicURL,",")
if debug {
fprintf(stderr,"--Id-- %v encoded data...\n",dicName)
fprintf(stderr,"Type: %v\n",dicv[0])
fprintf(stderr,"Body: %v\n",dicv[1])
fprintf(stderr,"\n")
}
body,_ := base64.StdEncoding.DecodeString(dicv[1])
dicBody = string(body)
}
if info {
fmt.Printf("--Id-- %v %v\n",dicName,dicURL)
fmt.Printf("%s\n",dicBody)
}
if debug {
fprintf(stderr,"--Id-- dicName %v text...\n",dicName)
fprintf(stderr,"%v\n",string(dicBody))
}
entv := strings.Split(dicBody,"\n");
if info {
fprintf(stderr,"--Id-- %v scan...\n",dicName);
}
var added int = 0
var dup int = 0
for i,v := range entv {
var pat string
var out string
fmt.Sscanf(v,"%s %s",&pat,&out)
if len(pat) <= 0 {
}else{
if 0 <= isinDic(pat) {
dup += 1
continue
}
romkana[dicents] = RomKana{dicName,pat,out,0}
dicents += 1
added += 1
Romkan = append(Romkan,RomKana{dicName,pat,out,0})
if debug {
fmt.Printf("[%3v]:[%2v]%-8v [%2v]%v\n",
i,len(pat),pat,len(out),out)
}
}
}
if !silent {
url := dicURL
if strBegins(url,"data:") {
url = "builtin"
}
fprintf(stderr,"--Id-- %v scan... %v added, %v dup. / %v total (%v)\n",
dicName,added,dup,len(Romkan),url);
}
// should sort by pattern length for conclete match, for performance
if debug {
arg = "" // search pattern
dump = true
}
}
if cmd == DIC_COM_DUMP || dump {
fprintf(stderr,"--Id-- %v dump... %v entries:\n",dicName,len(Romkan));
var match = 0
for i := 0; i < len(Romkan); i++ {
dic := Romkan[i].dic
pat := Romkan[i].pat
out := Romkan[i].out
if arg == "" || 0 <= strings.Index(pat,arg)||0 <= strings.Index(out,arg) {
fmt.Printf("\\\\%v\t%v [%2v]%-8v [%2v]%v\n",
i,dic,len(pat),pat,len(out),out)
match += 1
}
}
fprintf(stderr,"--Id-- %v matched %v / %v entries:\n",arg,match,len(Romkan));
}
}
func loadDefaultDic(dic int){
if( 0 < len(Romkan) ){
return
}
//fprintf(stderr,"\r\n")
xDic([]string{"dic",DIC_COM_LOAD});
var info = false
if info {
fprintf(stderr,"--Id-- Conguraturations!! WorldDic is now activated.\r\n")
fprintf(stderr,"--Id-- enter \"dic\" command for help.\r\n")
}
}
func readDic()(int){
/*
var rk *os.File;
var dic = "MyIME-dic.txt";
//rk = fopen("romkana.txt","r");
//rk = fopen("JK-JA-morse-dic.txt","r");
rk = fopen(dic,"r");
if( rk == NULL_FP ){
if( true ){
fprintf(stderr,"--%s-- Could not load %s\n",MyIMEVER,dic);
}
return -1;
}
if( true ){
var di int;
var line = make(StrBuff,1024);
var pat string
var out string
for di = 0; di < 1024; di++ {
if( fgets(line,sizeof(line),rk) == NULLSP ){
break;
}
fmt.Sscanf(string(line[0:strlen(line)]),"%s %s",&pat,&out);
//sscanf(line,"%s %[^\r\n]",&pat,&out);
romkana[di].pat = pat;
romkana[di].out = out;
//fprintf(stderr,"--Dd- %-10s %s\n",pat,out)
}
dicents += di
if( false ){
fprintf(stderr,"--%s-- loaded romkana.txt [%d]\n",MyIMEVER,di);
for di = 0; di < dicents; di++ {
fprintf(stderr,
"%s %s\n",romkana[di].pat,romkana[di].out);
}
}
}
fclose(rk);
//romkana[dicents].pat = "//ddump"
//romkana[dicents].pat = "//ddump" // dump the dic. and clean the command input
*/
return 0;
}
func matchlen(stri string, pati string)(int){
if strBegins(stri,pati) {
return len(pati)
}else{
return 0
}
}
func convs(src string)(string){
var si int;
var sx = len(src);
var di int;
var mi int;
var dstb []byte
for si = 0; si < sx; { // search max. match from the position
if strBegins(src[si:],"%x/") {
// %x/integer/ // s/a/b/
ix := strings.Index(src[si+3:],"/")
if 0 < ix {
var iv int = 0
//fmt.Sscanf(src[si+3:si+3+ix],"%d",&iv)
fmt.Sscanf(src[si+3:si+3+ix],"%v",&iv)
sval := fmt.Sprintf("%x",iv)
bval := []byte(sval)
dstb = append(dstb,bval...)
si = si+3+ix+1
continue
}
}
if strBegins(src[si:],"%d/") {
// %d/integer/ // s/a/b/
ix := strings.Index(src[si+3:],"/")
if 0 < ix {
var iv int = 0
fmt.Sscanf(src[si+3:si+3+ix],"%v",&iv)
sval := fmt.Sprintf("%d",iv)
bval := []byte(sval)
dstb = append(dstb,bval...)
si = si+3+ix+1
continue
}
}
if strBegins(src[si:],"%t") {
now := time.Now()
if true {
date := now.Format(time.Stamp)
dstb = append(dstb,[]byte(date)...)
si = si+3
}
continue
}
var maxlen int = 0;
var len int;
mi = -1;
for di = 0; di < dicents; di++ {
len = matchlen(src[si:],romkana[di].pat);
if( maxlen < len ){
maxlen = len;
mi = di;
}
}
if( 0 < maxlen ){
out := romkana[mi].out;
dstb = append(dstb,[]byte(out)...);
si += maxlen;
}else{
dstb = append(dstb,src[si])
si += 1;
}
}
return string(dstb)
}
func trans(src string)(int){
dst := convs(src);
xfputss(dst,stderr);
return 0;
}
//------------------------------------------------------------- LINEEDIT
// "?" at the top of the line means searching history
// should be compatilbe with Telnet
const (
EV_MODE = 255
EV_IDLE = 254
EV_TIMEOUT = 253
GO_UP = 252 // k
GO_DOWN = 251 // j
GO_RIGHT = 250 // l
GO_LEFT = 249 // h
DEL_RIGHT = 248 // x
GO_TOPL = 'A'-0x40 // 0
GO_ENDL = 'E'-0x40 // $
GO_TOPW = 239 // b
GO_ENDW = 238 // e
GO_NEXTW = 237 // w
GO_FORWCH = 229 // f
GO_PAIRCH = 228 // %
GO_DEL = 219 // d
HI_SRCH_FW = 209 // /
HI_SRCH_BK = 208 // ?
HI_SRCH_RFW = 207 // n
HI_SRCH_RBK = 206 // N
)
// should return number of octets ready to be read immediately
//fprintf(stderr,"\n--Select(%v %v)\n",err,r.Bits[0])
var EventRecvFd = -1 // file descriptor
var EventSendFd = -1
const EventFdOffset = 1000000
const NormalFdOffset = 100
func putEvent(event int, evarg int){
if true {
if EventRecvFd < 0 {
var pv = []int{-1,-1}
syscall.Pipe(pv)
EventRecvFd = pv[0]
EventSendFd = pv[1]
//fmt.Printf("--De-- EventPipe created[%v,%v]\n",EventRecvFd,EventSendFd)
}
}else{
if EventRecvFd < 0 {
// the document differs from this spec
// https://golang.org/src/syscall/syscall_unix.go?s=8096:8158#L340
sv,err := syscall.Socketpair(syscall.AF_UNIX,syscall.SOCK_STREAM,0)
EventRecvFd = sv[0]
EventSendFd = sv[1]
if err != nil {
fmt.Printf("--De-- EventSock created[%v,%v](%v)\n",
EventRecvFd,EventSendFd,err)
}
}
}
var buf = []byte{ byte(event)}
n,err := syscall.Write(EventSendFd,buf)
if err != nil {
fmt.Printf("--De-- putEvent[%v](%3v)(%v %v)\n",EventSendFd,event,n,err)
}
}
func ungets(str string){
for _,ch := range str {
putEvent(int(ch),0)
}
}
func (gsh*GshContext)xReplay(argv[]string){
hix := 0
tempo := 1.0
xtempo := 1.0
repeat := 1
for _,a := range argv { // tempo
if strBegins(a,"x") {
fmt.Sscanf(a[1:],"%f",&xtempo)
tempo = 1 / xtempo
//fprintf(stderr,"--Dr-- tempo=[%v]%v\n",a[2:],tempo);
}else
if strBegins(a,"r") { // repeat
fmt.Sscanf(a[1:],"%v",&repeat)
}else
if strBegins(a,"!") {
fmt.Sscanf(a[1:],"%d",&hix)
}else{
fmt.Sscanf(a,"%d",&hix)
}
}
if hix == 0 || len(argv) <= 1 {
hix = len(gsh.CommandHistory)-1
}
fmt.Printf("--Ir-- Replay(!%v x%v r%v)\n",hix,xtempo,repeat)
//dumpEvents(hix)
//gsh.xScanReplay(hix,false,repeat,tempo,argv)
go gsh.xScanReplay(hix,true,repeat,tempo,argv)
}
//
syscall.Select
// 2020-0827 GShell-0.2.3
func FpollIn1(fp *os.File,usec int)(uintptr){
nfd := 1
rdv := syscall.FdSet {}
fd1 := fp.Fd()
bank1 := fd1/32
mask1 := int32(1 << fd1)
rdv.Bits[bank1] = mask1
fd2 := -1
bank2 := -1
var mask2 int32 = 0
if 0 <= EventRecvFd {
fd2 = EventRecvFd
nfd = fd2 + 1
bank2 = fd2/32
mask2 = int32(1 << fd2)
rdv.Bits[bank2] |= mask2
//fmt.Printf("--De-- EventPoll mask added [%d][%v][%v]\n",fd2,bank2,mask2)
}
tout := syscall.NsecToTimeval(int64(usec*1000))
//n,err := syscall.Select(nfd,&rdv,nil,nil,&tout) // spec. mismatch
err := syscall.Select(nfd,&rdv,nil,nil,&tout)
if err != nil {
//fmt.Printf("--De-- select() err(%v)\n",err)
}
if err == nil {
if 0 <= fd2 && (rdv.Bits[bank2] & mask2) != 0 {
if false {
fmt.Printf("--De-- got Event\n")
}
return uintptr(EventFdOffset + fd2)
}else
if (rdv.Bits[bank1] & mask1) != 0 {
return uintptr(NormalFdOffset + fd1)
}else{
return 1
}
}else{
return 0
}
}
func fgetcTimeout1(fp *os.File,usec int)(int){
READ1:
readyFd := FpollIn1(fp,usec)
if readyFd < 100 {
return EV_TIMEOUT
}
var buf [1]byte
if EventFdOffset <= readyFd {
fd := int(readyFd-EventFdOffset)
_,err := syscall.Read(fd,buf[0:1])
if( err != nil ){
return EOF;
}else{
if buf[0] == EV_MODE {
recvEvent(fd)
goto READ1
}
return int(buf[0])
}
}
_,err := fp.Read(buf[0:1])
if( err != nil ){
return EOF;
}else{
return int(buf[0])
}
}
func visibleChar(ch int)(string){
switch {
case '!' <= ch && ch <= '~':
return string(ch)
}
switch ch {
case ' ': return "\\s"
case '\n': return "\\n"
case '\r': return "\\r"
case '\t': return "\\t"
}
switch ch {
case 0x00: return "NUL"
case 0x07: return "BEL"
case 0x08: return "BS"
case 0x0E: return "SO"
case 0x0F: return "SI"
case 0x1B: return "ESC"
case 0x7F: return "DEL"
}
switch ch {
case EV_IDLE: return fmt.Sprintf("IDLE")
case EV_MODE: return fmt.Sprintf("MODE")
}
return fmt.Sprintf("%X",ch)
}
func recvEvent(fd int){
var buf = make([]byte,1)
_,_ = syscall.Read(fd,buf[0:1])
if( buf[0] != 0 ){
romkanmode = true
}else{
romkanmode = false
}
}
func (gsh*GshContext)xScanReplay(hix int,replay bool,repeat int,tempo float64,argv[]string){
var Start time.Time
var events = []Event{}
for _,e := range Events {
if hix == 0 || e.CmdIndex == hix {
events = append(events,e)
}
}
elen := len(events)
if 0 < elen {
if events[elen-1].event == EV_IDLE {
events = events[0:elen-1]
}
}
for r := 0; r < repeat; r++ {
for i,e := range events {
nano := e.when.Nanosecond()
micro := nano / 1000
if Start.Second() == 0 {
Start = time.Now()
}
diff := time.Now().Sub(Start)
if replay {
if e.event != EV_IDLE {
putEvent(e.event,0)
if e.event == EV_MODE { // event with arg
putEvent(int(e.evarg),0)
}
}
}else{
fmt.Printf("%7.3fms #%-3v !%-3v [%v.%06d] %3v %02X %-4v %10.3fms\n",
float64(diff)/1000000.0,
i,
e.CmdIndex,
e.when.Format(time.Stamp),micro,
e.event,e.event,visibleChar(e.event),
float64(e.evarg)/1000000.0)
}
if e.event == EV_IDLE {
d := time.Duration(float64(time.Duration(e.evarg)) * tempo)
//nsleep(time.Duration(e.evarg))
nsleep(d)
}
}
}
}
func dumpEvents(arg[]string){
hix := 0
if 1 < len(arg) {
fmt.Sscanf(arg[1],"%d",&hix)
}
for i,e := range Events {
nano := e.when.Nanosecond()
micro := nano / 1000
//if e.event != EV_TIMEOUT {
if hix == 0 || e.CmdIndex == hix {
fmt.Printf("#%-3v !%-3v [%v.%06d] %3v %02X %-4v %10.3fms\n",i,
e.CmdIndex,
e.when.Format(time.Stamp),micro,
e.event,e.event,visibleChar(e.event),float64(e.evarg)/1000000.0)
}
//}
}
}
func fgetcTimeout(fp *os.File,usec int)(int){
ch := fgetcTimeout1(fp,usec)
if ch != EV_TIMEOUT {
now := time.Now()
if 0 < len(Events) {
last := Events[len(Events)-1]
dura := int64(now.Sub(last.when))
Events = append(Events,Event{last.when,EV_IDLE,dura,last.CmdIndex})
}
Events = append(Events,Event{time.Now(),ch,0,CmdIndex})
}
return ch
}
var TtyMaxCol = 72 // to be obtained by ioctl?
var EscTimeout = (100*1000)
var (
MODE_VicMode bool // vi compatible command mode
MODE_ShowMode bool
romkanmode bool // shown translation mode, the mode to be retained
MODE_Recursive bool // recursive translation
MODE_CapsLock bool // software CapsLock
MODE_LowerLock bool // force lower-case character lock
MODE_ViInsert int // visible insert mode, should be like "I" icon in X Window
MODE_ViTrace bool // output newline before translation
)
type IInput struct {
lno int
lastlno int
pch []int // input queue
prompt string
line string
right string
inJmode bool
pinJmode bool
waitingMeta string // waiting meta character
LastCmd string
}
func (iin*IInput)Getc(timeoutUs int)(int){
ch1 := EOF
ch2 := EOF
ch3 := EOF
if( 0 < len(iin.pch) ){ // deQ
ch1 = iin.pch[0]
iin.pch = iin.pch[1:]
}else{
ch1 = fgetcTimeout(stdin,timeoutUs);
}
if( ch1 == 033 ){ /// escape sequence
ch2 = fgetcTimeout(stdin,EscTimeout);
if( ch2 == EV_TIMEOUT ){
}else{
ch3 = fgetcTimeout(stdin,EscTimeout);
if( ch3 == EV_TIMEOUT ){
iin.pch = append(iin.pch,ch2) // enQ
}else{
switch( ch2 ){
default:
iin.pch = append(iin.pch,ch2) // enQ
iin.pch = append(iin.pch,ch3) // enQ
case '[':
switch( ch3 ){
case 'A': ch1 = GO_UP; // ^
case 'B': ch1 = GO_DOWN; // v
case 'C': ch1 = GO_RIGHT; // >
case 'D': ch1 = GO_LEFT; // <
case '3':
ch4 := fgetcTimeout(stdin,EscTimeout);
if( ch4 == '~' ){
//fprintf(stderr,"x[%02X %02X %02X %02X]\n",ch1,ch2,ch3,ch4);
ch1 = DEL_RIGHT
}
}
case '\\':
//ch4 := fgetcTimeout(stdin,EscTimeout);
//fprintf(stderr,"y[%02X %02X %02X %02X]\n",ch1,ch2,ch3,ch4);
switch( ch3 ){
case '~': ch1 = DEL_RIGHT
}
}
}
}
}
return ch1
}
func (inn*IInput)clearline(){
var i int
fprintf(stderr,"\r");
// should be ANSI ESC sequence
for i = 0; i < TtyMaxCol; i++ { // to the max. position in this input action
fputc(' ',os.Stderr);
}
fprintf(stderr,"\r");
}
func (iin*IInput)Redraw(){
redraw(iin,iin.lno,iin.line,iin.right)
}
func redraw(iin *IInput,lno int,line string,right string){
inMeta := false
showMode := ""
showMeta := "" // visible Meta mode on the cursor position
showLino := fmt.Sprintf("!%d! ",lno)
InsertMark := "" // in visible insert mode
if MODE_VicMode {
}else
if 0 < len(iin.right) {
InsertMark = " "
}
if( 0 < len(iin.waitingMeta) ){
inMeta = true
if iin.waitingMeta[0] != 033 {
showMeta = iin.waitingMeta
}
}
if( romkanmode ){
//romkanmark = " *";
}else{
//romkanmark = "";
}
if MODE_ShowMode {
romkan := "--"
inmeta := "-"
inveri := ""
if MODE_CapsLock {
inmeta = "A"
}
if MODE_LowerLock {
inmeta = "a"
}
if MODE_ViTrace {
inveri = "v"
}
if MODE_VicMode {
inveri = ":"
}
if romkanmode {
romkan = "\343\201\202"
if MODE_CapsLock {
inmeta = "R"
}else{
inmeta = "r"
}
}
if inMeta {
inmeta = "\\"
}
showMode = "["+romkan+inmeta+inveri+"]";
}
Pre := "\r" + showMode + showLino
Output := ""
Left := ""
Right := ""
if romkanmode {
Left = convs(line)
Right = InsertMark+convs(right)
}else{
Left = line
Right = InsertMark+right
}
Output = Pre+Left
if MODE_ViTrace {
Output += iin.LastCmd
}
Output += showMeta+Right
for len(Output) < TtyMaxCol { // to the max. position that may be dirty
Output += " "
// should be ANSI ESC sequence
// not necessary just after newline
}
Output += Pre+Left+showMeta // to set the cursor to the current input position
fprintf(stderr,"%s",Output)
if MODE_ViTrace {
if 0 < len(iin.LastCmd) {
iin.LastCmd = ""
fprintf(stderr,"\r\n")
}
}
}
//
utf8
func delHeadChar(str string)(rline string,head string){
_,clen := utf8.DecodeRune([]byte(str))
head = string(str[0:clen])
return str[clen:],head
}
func delTailChar(str string)(rline string, last string){
var i = 0
var clen = 0
for {
_,siz := utf8.DecodeRune([]byte(str)[i:])
if siz <= 0 { break }
clen = siz
i += siz
}
last = str[len(str)-clen:]
return str[0:len(str)-clen],last
}
// 3> for output and history
// 4> for keylog?
//
Command Line Editor
func xgetline(lno int, prevline string, gsh*GshContext)(string){
var iin IInput
iin.lastlno = lno
iin.lno = lno
CmdIndex = len(gsh.CommandHistory)
if( isatty(0) == 0 ){
if( sfgets(&iin.line,LINESIZE,stdin) == NULL ){
iin.line = "exit\n";
}else{
}
return iin.line
}
if( true ){
//var pts string;
//pts = ptsname(0);
//pts = ttyname(0);
//fprintf(stderr,"--pts[0] = %s\n",pts?pts:"?");
}
if( false ){
fprintf(stderr,"! ");
fflush(stderr);
sfgets(&iin.line,LINESIZE,stdin);
return iin.line
}
system("/bin/stty -echo -icanon");
xline := iin.xgetline1(prevline,gsh)
system("/bin/stty echo sane");
return xline
}
func (iin*IInput)Translate(cmdch int){
romkanmode = !romkanmode;
if MODE_ViTrace {
fprintf(stderr,"%v\r\n",string(cmdch));
}else
if( cmdch == 'J' ){
fprintf(stderr,"J\r\n");
iin.inJmode = true
}
iin.Redraw();
loadDefaultDic(cmdch);
iin.Redraw();
}
func (iin*IInput)Replace(cmdch int){
iin.LastCmd = fmt.Sprintf("\\%v",string(cmdch))
iin.Redraw();
loadDefaultDic(cmdch);
dst := convs(iin.line+iin.right);
iin.line = dst
iin.right = ""
if( cmdch == 'I' ){
fprintf(stderr,"I\r\n");
iin.inJmode = true
}
iin.Redraw();
}
// aa 12 a1a1
func isAlpha(ch rune)(bool){
if 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' {
return true
}
return false
}
func isAlnum(ch rune)(bool){
if 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' {
return true
}
if '0' <= ch && ch <= '9' {
return true
}
return false
}
// 0.2.8 2020-0901 created
//
DecodeRuneInString
func (iin*IInput)GotoTOPW(){
str := iin.line
i := len(str)
if i <= 0 {
return
}
//i0 := i
i -= 1
lastSize := 0
var lastRune rune
var found = -1
for 0 < i { // skip preamble spaces
lastRune,lastSize = utf8.DecodeRuneInString(str[i:])
if !isAlnum(lastRune) { // character, type, or string to be searched
i -= lastSize
continue
}
break
}
for 0 < i {
lastRune,lastSize = utf8.DecodeRuneInString(str[i:])
if lastSize <= 0 { continue } // not the character top
if !isAlnum(lastRune) { // character, type, or string to be searched
found = i
break
}
i -= lastSize
}
if found < 0 && i == 0 {
found = 0
}
if 0 <= found {
if isAlnum(lastRune) { // or non-kana character
}else{ // when positioning to the top o the word
i += lastSize
}
iin.right = str[i:] + iin.right
if 0 < i {
iin.line = str[0:i]
}else{
iin.line = ""
}
}
//fmt.Printf("\n(%d,%d,%d)[%s][%s]\n",i0,i,found,iin.line,iin.right)
//fmt.Printf("") // set debug messae at the end of line
}
// 0.2.8 2020-0901 created
func (iin*IInput)GotoENDW(){
str := iin.right
if len(str) <= 0 {
return
}
lastSize := 0
var lastRune rune
var lastW = 0
i := 0
inWord := false
lastRune,lastSize = utf8.DecodeRuneInString(str[0:])
if isAlnum(lastRune) {
r,z := utf8.DecodeRuneInString(str[lastSize:])
if 0 < z && isAlnum(r) {
inWord = true
}
}
for i < len(str) {
lastRune,lastSize = utf8.DecodeRuneInString(str[i:])
if lastSize <= 0 { break } // broken data?
if !isAlnum(lastRune) { // character, type, or string to be searched
break
}
lastW = i // the last alnum if in alnum word
i += lastSize
}
if inWord {
goto DISP
}
for i < len(str) {
lastRune,lastSize = utf8.DecodeRuneInString(str[i:])
if lastSize <= 0 { break } // broken data?
if isAlnum(lastRune) { // character, type, or string to be searched
break
}
i += lastSize
}
for i < len(str) {
lastRune,lastSize = utf8.DecodeRuneInString(str[i:])
if lastSize <= 0 { break } // broken data?
if !isAlnum(lastRune) { // character, type, or string to be searched
break
}
lastW = i
i += lastSize
}
DISP:
if 0 < lastW {
iin.line = iin.line + str[0:lastW]
iin.right = str[lastW:]
}
//fmt.Printf("\n(%d)[%s][%s]\n",i,iin.line,iin.right)
//fmt.Printf("") // set debug messae at the end of line
}
// 0.2.8 2020-0901 created
func (iin*IInput)GotoNEXTW(){
str := iin.right
if len(str) <= 0 {
return
}
lastSize := 0
var lastRune rune
var found = -1
i := 1
for i < len(str) {
lastRune,lastSize = utf8.DecodeRuneInString(str[i:])
if lastSize <= 0 { break } // broken data?
if !isAlnum(lastRune) { // character, type, or string to be searched
found = i
break
}
i += lastSize
}
if 0 < found {
if isAlnum(lastRune) { // or non-kana character
}else{ // when positioning to the top o the word
found += lastSize
}
iin.line = iin.line + str[0:found]
if 0 < found {
iin.right = str[found:]
}else{
iin.right = ""
}
}
//fmt.Printf("\n(%d)[%s][%s]\n",i,iin.line,iin.right)
//fmt.Printf("") // set debug messae at the end of line
}
// 0.2.8 2020-0902 created
func (iin*IInput)GotoPAIRCH(){
str := iin.right
if len(str) <= 0 {
return
}
lastRune,lastSize := utf8.DecodeRuneInString(str[0:])
if lastSize <= 0 {
return
}
forw := false
back := false
pair := ""
switch string(lastRune){
case "{": pair = "}"; forw = true
case "}": pair = "{"; back = true
case "(": pair = ")"; forw = true
case ")": pair = "("; back = true
case "[": pair = "]"; forw = true
case "]": pair = "["; back = true
case "<": pair = ">"; forw = true
case ">": pair = "<"; back = true
case "\"": pair = "\""; // context depednet, can be f" or back-double quote
case "'": pair = "'"; // context depednet, can be f' or back-quote
// case Japanese Kakkos
}
if forw {
iin.SearchForward(pair)
}
if back {
iin.SearchBackward(pair)
}
}
// 0.2.8 2020-0902 created
func (iin*IInput)SearchForward(pat string)(bool){
right := iin.right
found := -1
i := 0
if strBegins(right,pat) {
_,z := utf8.DecodeRuneInString(right[i:])
if 0 < z {
i += z
}
}
for i < len(right) {
if strBegins(right[i:],pat) {
found = i
break
}
_,z := utf8.DecodeRuneInString(right[i:])
if z <= 0 { break }
i += z
}
if 0 <= found {
iin.line = iin.line + right[0:found]
iin.right = iin.right[found:]
return true
}else{
return false
}
}
// 0.2.8 2020-0902 created
func (iin*IInput)SearchBackward(pat string)(bool){
line := iin.line
found := -1
i := len(line)-1
for i = i; 0 <= i; i-- {
_,z := utf8.DecodeRuneInString(line[i:])
if z <= 0 {
continue
}
//fprintf(stderr,"-- %v %v\n",pat,line[i:])
if strBegins(line[i:],pat) {
found = i
break
}
}
//fprintf(stderr,"--%d\n",found)
if 0 <= found {
iin.right = line[found:] + iin.right
iin.line = line[0:found]
return true
}else{
return false
}
}
// 0.2.8 2020-0902 created
// search from top, end, or current position
func (gsh*GshContext)SearchHistory(pat string, forw bool)(bool,string){
if forw {
for _,v := range gsh.CommandHistory {
if 0 <= strings.Index(v.CmdLine,pat) {
//fprintf(stderr,"\n--De-- found !%v [%v]%v\n",i,pat,v.CmdLine)
return true,v.CmdLine
}
}
}else{
hlen := len(gsh.CommandHistory)
for i := hlen-1; 0 < i ; i-- {
v := gsh.CommandHistory[i]
if 0 <= strings.Index(v.CmdLine,pat) {
//fprintf(stderr,"\n--De-- found !%v [%v]%v\n",i,pat,v.CmdLine)
return true,v.CmdLine
}
}
}
//fprintf(stderr,"\n--De-- not-found(%v)\n",pat)
return false,"(Not Found in History)"
}
// 0.2.8 2020-0902 created
func (iin*IInput)GotoFORWSTR(pat string,gsh*GshContext){
found := false
if 0 < len(iin.right) {
found = iin.SearchForward(pat)
}
if !found {
found,line := gsh.SearchHistory(pat,true)
if found {
iin.line = line
iin.right = ""
}
}
}
func (iin*IInput)GotoBACKSTR(pat string, gsh*GshContext){
found := false
if 0 < len(iin.line) {
found = iin.SearchBackward(pat)
}
if !found {
found,line := gsh.SearchHistory(pat,false)
if found {
iin.line = line
iin.right = ""
}
}
}
func (iin*IInput)getstring1(prompt string)(string){ // should be editable
iin.clearline();
fprintf(stderr,"\r%v",prompt)
str := ""
for {
ch := iin.Getc(10*1000*1000)
if ch == '\n' || ch == '\r' {
break
}
sch := string(ch)
str += sch
fprintf(stderr,"%s",sch)
}
return str
}
// search pattern must be an array and selectable with ^N/^P
var SearchPat = ""
var SearchForw = true
func (iin*IInput)xgetline1(prevline string, gsh*GshContext)(string){
var ch int;
MODE_ShowMode = false
MODE_VicMode = false
iin.Redraw();
first := true
for cix := 0; ; cix++ {
iin.pinJmode = iin.inJmode
iin.inJmode = false
ch = iin.Getc(1000*1000)
if ch != EV_TIMEOUT && first {
first = false
mode := 0
if romkanmode {
mode = 1
}
now := time.Now()
Events = append(Events,Event{now,EV_MODE,int64(mode),CmdIndex})
}
if ch == 033 {
MODE_ShowMode = true
MODE_VicMode = !MODE_VicMode
iin.Redraw();
continue
}
if MODE_VicMode {
switch ch {
case '0': ch = GO_TOPL
case '$': ch = GO_ENDL
case 'b': ch = GO_TOPW
case 'e': ch = GO_ENDW
case 'w': ch = GO_NEXTW
case '%': ch = GO_PAIRCH
case 'j': ch = GO_DOWN
case 'k': ch = GO_UP
case 'h': ch = GO_LEFT
case 'l': ch = GO_RIGHT
case 'x': ch = DEL_RIGHT
case 'a': MODE_VicMode = !MODE_VicMode
ch = GO_RIGHT
case 'i': MODE_VicMode = !MODE_VicMode
iin.Redraw();
continue
case '~':
right,head := delHeadChar(iin.right)
if len([]byte(head)) == 1 {
ch = int(head[0])
if( 'a' <= ch && ch <= 'z' ){
ch = ch + 'A'-'a'
}else
if( 'A' <= ch && ch <= 'Z' ){
ch = ch + 'a'-'A'
}
iin.right = string(ch) + right
}
iin.Redraw();
continue
case 'f': // GO_FORWCH
iin.Redraw();
ch = iin.Getc(3*1000*1000)
if ch == EV_TIMEOUT {
iin.Redraw();
continue
}
SearchPat = string(ch)
SearchForw = true
iin.GotoFORWSTR(SearchPat,gsh)
iin.Redraw();
continue
case '/':
SearchPat = iin.getstring1("/") // should be editable
SearchForw = true
iin.GotoFORWSTR(SearchPat,gsh)
iin.Redraw();
continue
case '?':
SearchPat = iin.getstring1("?") // should be editable
SearchForw = false
iin.GotoBACKSTR(SearchPat,gsh)
iin.Redraw();
continue
case 'n':
if SearchForw {
iin.GotoFORWSTR(SearchPat,gsh)
}else{
iin.GotoBACKSTR(SearchPat,gsh)
}
iin.Redraw();
continue
case 'N':
if !SearchForw {
iin.GotoFORWSTR(SearchPat,gsh)
}else{
iin.GotoBACKSTR(SearchPat,gsh)
}
iin.Redraw();
continue
}
}
switch ch {
case GO_TOPW:
iin.GotoTOPW()
iin.Redraw();
continue
case GO_ENDW:
iin.GotoENDW()
iin.Redraw();
continue
case GO_NEXTW:
// to next space then
iin.GotoNEXTW()
iin.Redraw();
continue
case GO_PAIRCH:
iin.GotoPAIRCH()
iin.Redraw();
continue
}
//fprintf(stderr,"A[%02X]\n",ch);
if( ch == '\\' || ch == 033 ){
MODE_ShowMode = true
metach := ch
iin.waitingMeta = string(ch)
iin.Redraw();
// set cursor //fprintf(stderr,"???\b\b\b")
ch = fgetcTimeout(stdin,2000*1000)
// reset cursor
iin.waitingMeta = ""
cmdch := ch
if( ch == EV_TIMEOUT ){
if metach == 033 {
continue
}
ch = metach
}else
/*
if( ch == 'm' || ch == 'M' ){
mch := fgetcTimeout(stdin,1000*1000)
if mch == 'r' {
romkanmode = true
}else{
romkanmode = false
}
continue
}else
*/
if( ch == 'k' || ch == 'K' ){
MODE_Recursive = !MODE_Recursive
iin.Translate(cmdch);
continue
}else
if( ch == 'j' || ch == 'J' ){
iin.Translate(cmdch);
continue
}else
if( ch == 'i' || ch == 'I' ){
iin.Replace(cmdch);
continue
}else
if( ch == 'l' || ch == 'L' ){
MODE_LowerLock = !MODE_LowerLock
MODE_CapsLock = false
if MODE_ViTrace {
fprintf(stderr,"%v\r\n",string(cmdch));
}
iin.Redraw();
continue
}else
if( ch == 'u' || ch == 'U' ){
MODE_CapsLock = !MODE_CapsLock
MODE_LowerLock = false
if MODE_ViTrace {
fprintf(stderr,"%v\r\n",string(cmdch));
}
iin.Redraw();
continue
}else
if( ch == 'v' || ch == 'V' ){
MODE_ViTrace = !MODE_ViTrace
if MODE_ViTrace {
fprintf(stderr,"%v\r\n",string(cmdch));
}
iin.Redraw();
continue
}else
if( ch == 'c' || ch == 'C' ){
if 0 < len(iin.line) {
xline,tail := delTailChar(iin.line)
if len([]byte(tail)) == 1 {
ch = int(tail[0])
if( 'a' <= ch && ch <= 'z' ){
ch = ch + 'A'-'a'
}else
if( 'A' <= ch && ch <= 'Z' ){
ch = ch + 'a'-'A'
}
iin.line = xline + string(ch)
}
}
if MODE_ViTrace {
fprintf(stderr,"%v\r\n",string(cmdch));
}
iin.Redraw();
continue
}else{
iin.pch = append(iin.pch,ch) // push
ch = '\\'
}
}
switch( ch ){
case 'P'-0x40: ch = GO_UP
case 'N'-0x40: ch = GO_DOWN
case 'B'-0x40: ch = GO_LEFT
case 'F'-0x40: ch = GO_RIGHT
}
//fprintf(stderr,"B[%02X]\n",ch);
switch( ch ){
case 0:
continue;
case '\t':
iin.Replace('j');
continue
case 'X'-0x40:
iin.Replace('j');
continue
case EV_TIMEOUT:
iin.Redraw();
if iin.pinJmode {
fprintf(stderr,"\\J\r\n")
iin.inJmode = true
}
continue
case GO_UP:
if iin.lno == 1 {
continue
}
cmd,ok := gsh.cmdStringInHistory(iin.lno-1)
if ok {
iin.line = cmd
iin.right = ""
iin.lno = iin.lno - 1
}
iin.Redraw();
continue
case GO_DOWN:
cmd,ok := gsh.cmdStringInHistory(iin.lno+1)
if ok {
iin.line = cmd
iin.right = ""
iin.lno = iin.lno + 1
}else{
iin.line = ""
iin.right = ""
if iin.lno == iin.lastlno-1 {
iin.lno = iin.lno + 1
}
}
iin.Redraw();
continue
case GO_LEFT:
if 0 < len(iin.line) {
xline,tail := delTailChar(iin.line)
iin.line = xline
iin.right = tail + iin.right
}
iin.Redraw();
continue;
case GO_RIGHT:
if( 0 < len(iin.right) && iin.right[0] != 0 ){
xright,head := delHeadChar(iin.right)
iin.right = xright
iin.line += head
}
iin.Redraw();
continue;
case EOF:
goto EXIT;
case 'R'-0x40: // replace
dst := convs(iin.line+iin.right);
iin.line = dst
iin.right = ""
iin.Redraw();
continue;
case 'T'-0x40: // just show the result
readDic();
romkanmode = !romkanmode;
iin.Redraw();
continue;
case 'L'-0x40:
iin.Redraw();
continue
case 'K'-0x40:
iin.right = ""
iin.Redraw();
continue
case 'E'-0x40:
iin.line += iin.right
iin.right = ""
iin.Redraw();
continue
case 'A'-0x40:
iin.right = iin.line + iin.right
iin.line = ""
iin.Redraw();
continue
case 'U'-0x40:
iin.line = ""
iin.right = ""
iin.clearline();
iin.Redraw();
continue;
case DEL_RIGHT:
if( 0 < len(iin.right) ){
iin.right,_ = delHeadChar(iin.right)
iin.Redraw();
}
continue;
case 0x7F: // BS? not DEL
if( 0 < len(iin.line) ){
iin.line,_ = delTailChar(iin.line)
iin.Redraw();
}
/*
else
if( 0 < len(iin.right) ){
iin.right,_ = delHeadChar(iin.right)
iin.Redraw();
}
*/
continue;
case 'H'-0x40:
if( 0 < len(iin.line) ){
iin.line,_ = delTailChar(iin.line)
iin.Redraw();
}
continue;
}
if( ch == '\n' || ch == '\r' ){
iin.line += iin.right;
iin.right = ""
iin.Redraw();
fputc(ch,stderr);
break;
}
if MODE_CapsLock {
if 'a' <= ch && ch <= 'z' {
ch = ch+'A'-'a'
}
}
if MODE_LowerLock {
if 'A' <= ch && ch <= 'Z' {
ch = ch+'a'-'A'
}
}
iin.line += string(ch);
iin.Redraw();
}
EXIT:
return iin.line + iin.right;
}
func getline_main(){
line := xgetline(0,"",nil)
fprintf(stderr,"%s\n",line);
/*
dp = strpbrk(line,"\r\n");
if( dp != NULL ){
*dp = 0;
}
if( 0 ){
fprintf(stderr,"\n(%d)\n",int(strlen(line)));
}
if( lseek(3,0,0) == 0 ){
if( romkanmode ){
var buf [8*1024]byte;
convs(line,buff);
strcpy(line,buff);
}
write(3,line,strlen(line));
ftruncate(3,lseek(3,0,SEEK_CUR));
//fprintf(stderr,"outsize=%d\n",(int)lseek(3,0,SEEK_END));
lseek(3,0,SEEK_SET);
close(3);
}else{
fprintf(stderr,"\r\ngotline: ");
trans(line);
//printf("%s\n",line);
printf("\n");
}
*/
}
//== end ========================================================= getline
//
// $USERHOME/.gsh/
// gsh-rc.txt, or gsh-configure.txt
// gsh-history.txt
// gsh-aliases.txt // should be conditional?
//
func (gshCtx *GshContext)gshSetupHomedir()(bool) {
homedir,found := userHomeDir()
if !found {
fmt.Printf("--E-- You have no UserHomeDir\n")
return true
}
gshhome := homedir + "/" + GSH_HOME
_, err2 := os.Stat(gshhome)
if err2 != nil {
err3 := os.Mkdir(gshhome,0700)
if err3 != nil {
fmt.Printf("--E-- Could not Create %s (%s)\n",
gshhome,err3)
return true
}
fmt.Printf("--I-- Created %s\n",gshhome)
}
gshCtx.GshHomeDir = gshhome
return false
}
func setupGshContext()(GshContext,bool){
gshPA := syscall.ProcAttr {
"", // the staring directory
os.Environ(), // environ[]
[]uintptr{os.Stdin.Fd(),os.Stdout.Fd(),os.Stderr.Fd()},
nil, // OS specific
}
cwd, _ := os.Getwd()
gshCtx := GshContext {
cwd, // StartDir
"", // GetLine
[]GChdirHistory { {cwd,time.Now(),0} }, // ChdirHistory
gshPA,
[]GCommandHistory{}, //something for invokation?
GCommandHistory{}, // CmdCurrent
false,
[]int{},
syscall.Rusage{},
"", // GshHomeDir
Ttyid(),
false,
false,
[]PluginInfo{},
[]string{},
" ",
"v",
ValueStack{},
GServer{"",""}, // LastServer
"", // RSERV
cwd, // RWD
CheckSum{},
}
err := gshCtx.gshSetupHomedir()
return gshCtx, err
}
func (gsh*GshContext)gshelllh(gline string)(bool){
ghist := gsh.CmdCurrent
ghist.WorkDir,_ = os.Getwd()
ghist.WorkDirX = len(gsh.ChdirHistory)-1
//fmt.Printf("--D--ChdirHistory(@%d)\n",len(gsh.ChdirHistory))
ghist.StartAt = time.Now()
rusagev1 := Getrusagev()
gsh.CmdCurrent.FoundFile = []string{}
fin := gsh.tgshelll(gline)
rusagev2 := Getrusagev()
ghist.Rusagev = RusageSubv(rusagev2,rusagev1)
ghist.EndAt = time.Now()
ghist.CmdLine = gline
ghist.FoundFile = gsh.CmdCurrent.FoundFile
/* record it but not show in list by default
if len(gline) == 0 {
continue
}
if gline == "hi" || gline == "history" { // don't record it
continue
}
*/
gsh.CommandHistory = append(gsh.CommandHistory, ghist)
return fin
}
//
Main loop
func script(gshCtxGiven *GshContext) (_ GshContext) {
gshCtxBuf,err0 := setupGshContext()
if err0 {
return gshCtxBuf;
}
gshCtx := &gshCtxBuf
//fmt.Printf("--I-- GSH_HOME=%s\n",gshCtx.GshHomeDir)
//resmap()
/*
if false {
gsh_getlinev, with_exgetline :=
which("PATH",[]string{"which","gsh-getline","-s"})
if with_exgetline {
gsh_getlinev[0] = toFullpath(gsh_getlinev[0])
gshCtx.GetLine = toFullpath(gsh_getlinev[0])
}else{
fmt.Printf("--W-- No gsh-getline found. Using internal getline.\n");
}
}
*/
ghist0 := gshCtx.CmdCurrent // something special, or gshrc script, or permanent history
gshCtx.CommandHistory = append(gshCtx.CommandHistory,ghist0)
prevline := ""
skipping := false
for hix := len(gshCtx.CommandHistory); ; {
gline := gshCtx.getline(hix,skipping,prevline)
if skipping {
if strings.Index(gline,"fi") == 0 {
fmt.Printf("fi\n");
skipping = false;
}else{
//fmt.Printf("%s\n",gline);
}
continue
}
if strings.Index(gline,"if") == 0 {
//fmt.Printf("--D-- if start: %s\n",gline);
skipping = true;
continue
}
if false {
os.Stdout.Write([]byte("gotline:"))
os.Stdout.Write([]byte(gline))
os.Stdout.Write([]byte("\n"))
}
gline = strsubst(gshCtx,gline,true)
if false {
fmt.Printf("fmt.Printf %%v - %v\n",gline)
fmt.Printf("fmt.Printf %%s - %s\n",gline)
fmt.Printf("fmt.Printf %%x - %s\n",gline)
fmt.Printf("fmt.Printf %%U - %s\n",gline)
fmt.Printf("Stouut.Write -")
os.Stdout.Write([]byte(gline))
fmt.Printf("\n")
}
/*
// should be cared in substitution ?
if 0 < len(gline) && gline[0] == '!' {
xgline, set, err := searchHistory(gshCtx,gline)
if err {
continue
}
if set {
// set the line in command line editor
}
gline = xgline
}
*/
fin := gshCtx.gshelllh(gline)
if fin {
break;
}
prevline = gline;
hix++;
}
return *gshCtx
}
func main() {
gshCtxBuf := GshContext{}
gsh := &gshCtxBuf
argv := os.Args
if 1 < len(argv) {
if isin("version",argv){
gsh.showVersion(argv)
return
}
comx := isinX("-c",argv)
if 0 < comx {
gshCtxBuf,err := setupGshContext()
gsh := &gshCtxBuf
if !err {
gsh.gshellv(argv[comx+1:])
}
return
}
}
if 1 < len(argv) && isin("-s",argv) {
}else{
gsh.showVersion(append(argv,[]string{"-l","-a"}...))
}
script(nil)
//gshCtx := script(nil)
//gshelll(gshCtx,"time")
}
//
