/
spawn.c
477 lines (431 loc) · 13.7 KB
/
spawn.c
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/*_ spawn.c Sun Dec 4 1988 */
/*
* The routines in this file are called to create a subjob running a command
* interpreter. This code is a big fat nothing on CP/M-86. You lose.
*/
#include <stdio.h>
#include "ed.h"
#if AMIGA
#define NEW 1006
#endif
#if VMS
#define EFN 0 /* Event flag. */
#include <ssdef.h> /* Random headers. */
#include <stsdef.h>
#include <descrip.h>
#include <iodef.h>
extern int oldmode[]; /* In "termio.c" */
extern int newmode[]; /* In "termio.c" */
extern short iochan; /* In "termio.c" */
#endif
#if __ZTC__
#include "capture.h"
#endif
#if MSDOS || _WIN32
#include <dos.h>
#endif
#if BSDUNIX || LINUX
#include <signal.h>
#endif
/*
* Create a subjob with a copy of the command intrepreter in it. When the
* command interpreter exits, mark the screen as garbage so that you do a full
* repaint. Bound to "C-C". The message at the start in VMS puts out a newline.
* Under some (unknown) condition, you don't get one free when DCL starts up.
*/
spawncli(f, n)
{
#if AMIGA
long newcli;
newcli = Open("CON:1/1/639/199/MicroEmacs Subprocess", NEW);
mlwrite("[Starting new CLI]");
sgarbf = TRUE;
Execute("", newcli, 0);
Close(newcli);
return(TRUE);
#endif
#if BSDUNIX || LINUX
register char *cp;
char *getenv();
#endif
#if VMS
movecursor(term.t_nrow-1, 0); /* In last line. */
mlputs("[Starting DCL]\r\n");
(*term.t_flush)(); /* Ignore "ttcol". */
sgarbf = TRUE;
return (sys(NULL)); /* NULL => DCL. */
#endif
#if CPM
mlwrite("Not in CP/M-86");
#endif
#if MSDOS || _WIN32
char *comspec,*getenv();
movecursor(term.t_nrow-1, 0); /* Seek to last line. */
(*term.t_flush)();
#if __ZTC__
comspec = getenv("COMSPEC");
spawnl(0,comspec,"COMMAND.COM",(char *) NULL);
#else
sys("\\command.com", ""); /* Run CLI. */
#endif
sgarbf = TRUE;
return(TRUE);
#endif
#if BSDUNIX || LINUX
movecursor(term.t_nrow-1, 0); /* Seek to last line. */
(*term.t_flush)();
ttclose(); /* stty to old settings */
if ((cp = getenv("SHELL")) != NULL && *cp != '\0')
system(cp);
else
system("exec /bin/sh");
sgarbf = TRUE;
sleep(2);
ttopen();
return(TRUE);
#endif
}
/*
* Run a one-liner in a subjob. When the command returns, wait for a single
* character to be typed, then mark the screen as garbage so a full repaint is
* done. Bound to "C-X !".
*/
spawn(f, n)
{
register int s;
char line[NLINE];
#if AMIGA
long newcli;
newcli = Open("CON:1/1/639/199/MicroEmacs Subprocess", NEW);
line[0] = 0;
if ((s=mlreply("CLI command: ", line, NLINE)) != TRUE)
return (s);
Execute(line,0,newcli);
Close(newcli);
while ((*term.t_getchar)() != '\r') /* Pause. */
;
sgarbf = TRUE;
return(TRUE);
#endif
#if VMS
line[0] = 0;
if ((s=mlreply("DCL command: ", line, NLINE)) != TRUE)
return (s);
(*term.t_putchar)('\n'); /* Already have '\r' */
(*term.t_flush)();
s = sys(line); /* Run the command. */
mlputs("\r\n\n[End]"); /* Pause. */
(*term.t_flush)();
while ((*term.t_getchar)() != '\r')
;
sgarbf = TRUE;
return (s);
#endif
#if CPM
mlwrite("Not in CP/M-86");
return (FALSE);
#endif
#if MSDOS || _WIN32
line[0] = 0;
if ((s=mlreply("MS-DOS command: ", line, NLINE)) != TRUE)
return (s);
system(line);
while ((*term.t_getchar)() != '\r') /* Pause. */
;
sgarbf = TRUE;
return (TRUE);
#endif
#if BSDUNIX || LINUX
line[0] = 0;
if ((s=mlreply("! ", line, NLINE)) != TRUE)
return (s);
(*term.t_putchar)('\n'); /* Already have '\r' */
(*term.t_flush)();
ttclose(); /* stty to old modes */
system(line);
sleep(2);
ttopen();
printf("[End]"); /* Pause. */
(*term.t_flush)();
while ((s = (*term.t_getchar)()) != '\r' && s != ' ')
;
sgarbf = TRUE;
return (TRUE);
#endif
}
/*
* Pipe a one line command into a window
* Bound to ^X @
*/
spawn_pipe(f, n)
{
register int s; /* return status from CLI */
register WINDOW *wp; /* pointer to new window */
register BUFFER *bp; /* pointer to buffer to zot */
char *p;
static char bname[] = "[DOS]";
#if AMIGA
static char filnam[] = "ram:command";
long newcli;
#else
static char filnam[] = "DOS.TMP";
#endif
static char line[NLINE + 2 + sizeof(filnam)]; /* command line sent to shell */
#if VMS
mlwrite("Not availible under VMS");
goto fail;
#endif
#if CPM
mlwrite("Not availible under CP/M-86");
goto fail;
#endif
/* get the command to pipe in */
if ((s = mlreply("DOS:", line, NLINE)) != TRUE)
return s;
#if __ZTC__ && !__OS2__
{ unsigned count;
char *buffer;
movecursor(term.t_nrow - 2, 0);
if (capture_init(0) == FALSE)
goto fail;
system(line);
sgarbf = TRUE;
buffer = capture_term(&count);
if (buffer == NULL ||
(bp = buffer_find(bname,TRUE,BFTEMP)) == NULL ||
buffer_clear(bp) == FALSE || /* blow away text in buffer */
!(bp == curbp || window_split(FALSE,1) && buffer_switch(bp))
)
{ free(buffer);
goto fail;
}
for (p = buffer; count--; p++)
{
switch (*p)
{ case '\n':
random_newline(FALSE,1);
break;
case '\r':
break;
default:
line_insert(1,*p);
break;
}
}
free(buffer);
return TRUE;
}
#else
/* get rid of the command output buffer if it exists */
if ((bp=buffer_find(bname, FALSE, BFTEMP)) != FALSE) /* if buffer exists */
{
/* If buffer is displayed, try to move it off screen */
/* (can't remove an on-screen buffer) */
if (bp->b_nwnd) /* if buffer is displayed */
{ if (bp == curbp) /* if it's the current window */
window_next(FALSE,1); /* make another window current */
window_only(FALSE, 1);
if (buffer_remove(bp) != TRUE)
goto fail;
}
}
/* split the current window to make room for the command output */
if (window_split(FALSE, 1) == FALSE)
goto fail;
p = line + strlen(line);
#if AMIGA
newcli = Open("CON:1/1/639/199/MicroEmacs Subprocess", NEW);
strcat(line, " >");
strcat(line, filnam);
Execute(line,0,newcli);
Close(newcli);
sgarbf = TRUE;
#endif
#if MSDOS || _WIN32 || __OS2__
strcat(line," >");
strcat(line,filnam);
movecursor(term.t_nrow - 2, 0);
system(line);
sgarbf = TRUE;
{ FILE *fp;
if ((fp = fopen(filnam, "r")) == NULL)
return FALSE;
else
fclose(fp);
}
#endif
#if BSDUNIX || LINUX
ttputc('\n'); /* Already have '\r' */
ttflush();
ttclose(); /* stty to old modes */
strcat(line,">");
strcat(line,filnam);
system(line);
ttopen();
ttflush();
sgarbf = TRUE;
#endif
*p = 0; /* dump trailing garbage */
/* and read the stuff in */
if (file_readin(filnam) == FALSE)
return(FALSE);
/* and get rid of the temporary file */
unlink(filnam);
return(TRUE);
#endif
fail:
return FALSE;
}
/*
* filter a buffer through an external DOS program
* Bound to ^X #
*/
spawn_filter(f, n)
{
register int s; /* return status from CLI */
register BUFFER *bp; /* pointer to buffer to zot */
static char filterline[] = " <fltinp >fltout";
static char line[NLINE + sizeof(filterline) - 1]; /* command line to send to shell */
char tmpnam[NFILEN]; /* place to store real file name */
char *p;
static char bname1[] = "fltinp";
#if AMIGA
static char filnam1[] = "ram:fltinp";
static char filnam2[] = "ram:fltout";
long newcli;
#else
static char filnam1[] = "fltinp";
static char filnam2[] = "fltout";
#endif
if (curbp->b_flag & BFRDONLY) /* if buffer is read-only */
return FALSE; /* fail */
#if VMS
mlwrite("Not availible under VMS");
return(FALSE);
#endif
#if CPM
mlwrite("Not availible under CP/M-86");
return(FALSE);
#endif
/* get the filter name and its args */
if ((s=mlreply("Filter:", line, NLINE)) != TRUE)
return(s);
/* setup the proper file names */
bp = curbp;
strcpy(tmpnam, bp->b_fname); /* save the original name */
strcpy(bp->b_fname, bname1); /* set it to our new one */
/* write it out, checking for errors */
if (writeout(filnam1) != TRUE) {
mlwrite("[Cannot write filter file]");
strcpy(bp->b_fname, tmpnam);
return(FALSE);
}
p = line + strlen(line);
#if AMIGA
newcli = Open("CON:1/1/639/199/MicroEmacs Subprocess", NEW);
strcat(line, " <ram:fltinp >ram:fltout");
Execute(line,0,newcli);
s = TRUE;
Close(newcli);
sgarbf = TRUE;
#endif
#if MSDOS || _WIN32
strcat(line," <fltinp >fltout");
movecursor(term.t_nrow - 2, 0);
system(line);
sgarbf = TRUE;
s = TRUE;
#endif
#if BSDUNIX || LINUX
ttputc('\n'); /* Already have '\r' */
ttflush();
ttclose(); /* stty to old modes */
strcat(line,filterline);
system(line);
ttopen();
ttflush();
sgarbf = TRUE;
s = TRUE;
#endif
*p = 0; /* chop off appended stuff */
/* on failure, escape gracefully */
if (s != TRUE || ((s = readin(filnam2)) == FALSE)) {
mlwrite("[Execution failed]");
strcpy(bp->b_fname, tmpnam);
goto ret;
}
/* reset file name */
strcpy(bp->b_fname, tmpnam); /* restore name */
bp->b_flag |= BFCHG; /* flag it as changed */
s = TRUE;
ret:
/* and get rid of the temporary file */
unlink(filnam1);
unlink(filnam2);
return s;
}
/*
* Run a command. The "cmd" is a pointer to a command string, or NULL if you
* want to run a copy of DCL in the subjob (this is how the standard routine
* LIB$SPAWN works. You have to do wierd stuff with the terminal on the way in
* and the way out, because DCL does not want the channel to be in raw mode.
*/
#if VMS
static sys(cmd)
register char *cmd;
{
struct dsc$descriptor cdsc;
struct dsc$descriptor *cdscp;
long status;
long substatus;
long iosb[2];
status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
oldmode, sizeof(oldmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
return (FALSE);
cdscp = NULL; /* Assume DCL. */
if (cmd != NULL) { /* Build descriptor. */
cdsc.dsc$a_pointer = cmd;
cdsc.dsc$w_length = strlen(cmd);
cdsc.dsc$b_dtype = DSC$K_DTYPE_T;
cdsc.dsc$b_class = DSC$K_CLASS_S;
cdscp = &cdsc;
}
status = LIB$SPAWN(cdscp, 0, 0, 0, 0, 0, &substatus, 0, 0, 0);
if (status != SS$_NORMAL)
substatus = status;
status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
newmode, sizeof(newmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
return (FALSE);
if ((substatus&STS$M_SUCCESS) == 0) /* Command failed. */
return (FALSE);
return (TRUE);
}
#endif
/*
* This routine, once again by Bob McNamara, is a C translation of the "system"
* routine in the MWC-86 run time library. It differs from the "system" routine
* in that it does not unconditionally append the string ".exe" to the end of
* the command name. We needed to do this because we want to be able to spawn
* off "command.com". We really do not understand what it does, but if you don't
* do it exactly "malloc" starts doing very very strange things.
*/
#if MSDOS || _WIN32
static sys(cmd, tail)
char *cmd;
char *tail;
{
#if MWC_86
register unsigned n;
extern char *__end;
n = __end + 15;
n >>= 4;
n = ((n + dsreg() + 16) & 0xFFF0) + 16;
return(execall(cmd, tail, n));
#endif
#if LATTICE
return forklp(cmd, tail, NULL);
#endif
}
#endif