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sam: '^' and '_' cmds; same as '<' and '|' except that stdout goes to the command window

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This commit is contained in:
ftrvxmtrx 2014-12-21 01:28:14 +01:00
parent 476a47b15c
commit 758496ecaa
4 changed files with 36 additions and 8 deletions
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11
sys/man/1/sam
View file

@ -496,11 +496,20 @@ Plan 9 command.
Send the range to the standard input of the
Plan 9 command.
.TP
.BI ^ " Plan 9-command
Send the standard output of the Plan 9 command
to the command window.
.TP
.BI | " Plan 9-command
Send the range to the standard input, and replace it by
the standard output, of the
Plan 9 command.
.TP
.BI _ " Plan 9-command
Send the range to the standard input, and send the
standard output of the Plan 9 command to the command
window.
.TP
.BI \*a! " Plan 9-command
Run the
Plan 9 command.
@ -515,6 +524,8 @@ is used.
In any of
.BR < ,
.BR > ,
.BR ^ ,
.BR _ ,
.B |
or
.BR ! ,

10
sys/src/cmd/sam/cmd.c
View file

@ -35,6 +35,8 @@ Cmdtab cmdtab[]={
'>', 0, 0, 0, 0, aDot, 0, linex, plan9_cmd,
'<', 0, 0, 0, 0, aDot, 0, linex, plan9_cmd,
'|', 0, 0, 0, 0, aDot, 0, linex, plan9_cmd,
'^', 0, 0, 0, 0, aDot, 0, linex, plan9_cmd,
'_', 0, 0, 0, 0, aDot, 0, linex, plan9_cmd,
'=', 0, 0, 0, 0, aDot, 0, linex, eq_cmd,
'c'|0x100,0, 0, 0, 0, aNo, 0, wordx, cd_cmd,
0, 0, 0, 0, 0, 0, 0, 0,
@ -76,7 +78,13 @@ inputc(void)
Again:
nbuf = 0;
if(downloaded){
if(cmdbufpos > cmdbuf.nc && cmdbuf.nc > 0){
cmdbufpos = 0;
bufreset(&cmdbuf);
}
if(cmdbufpos < cmdbuf.nc && cmdbuf.nc > 0)
bufread(&cmdbuf, cmdbufpos++, &r, 1);
else if(downloaded){
while(termoutp == terminp){
cmdupdate();
if(patset)

2
sys/src/cmd/sam/sam.h
View file

@ -361,6 +361,8 @@ extern int quitok;
extern Address addr;
extern Buffer snarfbuf;
extern Buffer plan9buf;
extern Buffer cmdbuf;
extern int cmdbufpos;
extern List file;
extern List tempfile;
extern File *cmd;

21
sys/src/cmd/sam/shell.c
View file

@ -7,6 +7,8 @@ char errfile[64];
String plan9cmd; /* null terminated */
Buffer plan9buf;
void checkerrs(void);
Buffer cmdbuf;
int cmdbufpos;
int
plan9(File *f, int type, String *s, int nest)
@ -28,7 +30,7 @@ plan9(File *f, int type, String *s, int nest)
}
if(type!='!' && pipe(pipe1)==-1)
error(Epipe);
if(type=='|')
if(type=='|' || type=='_')
snarf(f, addr.r.p1, addr.r.p2, &plan9buf, 1);
if((pid=fork()) == 0){
if(downloaded){ /* also put nasty fd's into errfile */
@ -48,14 +50,14 @@ plan9(File *f, int type, String *s, int nest)
}
}
if(type != '!') {
if(type=='<' || type=='|')
dup(pipe1[1], 1);
else if(type == '>')
if(type == '>')
dup(pipe1[0], 0);
else
dup(pipe1[1], 1);
close(pipe1[0]);
close(pipe1[1]);
}
if(type == '|'){
if(type == '|' || type == '_'){
if(pipe(pipe2) == -1)
exits("pipe");
if((pid = fork())==0){
@ -87,7 +89,7 @@ plan9(File *f, int type, String *s, int nest)
close(pipe2[0]);
close(pipe2[1]);
}
if(type=='<'){
if(type=='<' || type=='^'){
close(0); /* so it won't read from terminal */
open("/dev/null", 0);
}
@ -115,9 +117,14 @@ plan9(File *f, int type, String *s, int nest)
writeio(f);
bpipeok = 0;
closeio((Posn)-1);
}else if(type == '^' || type == '_'){
int nulls;
close(pipe1[1]);
bufload(&cmdbuf, cmdbufpos, pipe1[0], &nulls);
close(pipe1[0]);
}
retmsg = waitfor(pid);
if(type=='|' || type=='<')
if(type=='|' || type=='<' || type=='_' || type=='^')
if(retmsg[0]!=0)
warn_s(Wbadstatus, retmsg);
if(downloaded)