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/***************************************************************************
* This program is Copyright (C) 1986, 1987, 1988 by Jonathan Payne. JOVE *
* is provided to you without charge, and with no warranty. You may give *
* away copies of JOVE, including sources, provided that this notice is *
* included in all the files. *
***************************************************************************/
#include "jove.h"
#include "ctype.h"
#include "fp.h"
#include "re.h"
#include "termcap.h"
#include "disp.h"
#include <signal.h>
#ifdef STDARGS
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#ifdef MSDOS
# include <io.h>
# include <process.h>
#endif
private void
DoShell proto((char *, char *)),
com_finish proto((int, char *)),
toerror proto((int, int));
#ifdef MSDOS
private void
closepipe proto((void));
#endif
private int
okay_error proto((void));
#if defined(MSDOS)
private int
openforpipe proto((void)),
reopenforpipe proto((void));
#endif
private struct error
*AddError proto((struct error *, Line *, Buffer *, Line *, int));
long SigMask = 0;
/* This disgusting RE search string parses output from the GREP
family, from the pdp11 compiler, pcc, and lint. Jay (HACK)
Fenlasen changed this to work for the lint errors. */
char ErrFmtStr[256] = "^\\{\",\\}\\([^:\"( \t]*\\)\\{\"\\, line ,:,(\\} *\\([0-9][0-9]*\\)[:)]\
\\|:: *\\([^(]*\\)(\\([0-9]*\\))$\
\\|( \\([^(]*\\)(\\([0-9]*\\)) ),";
struct error {
Buffer *er_buf; /* Buffer error is in */
Line *er_mess, /* Actual error message */
*er_text; /* Actual error */
int er_char; /* char pos of error */
struct error *er_prev, /* List of errors */
*er_next;
};
private struct error *cur_error = NULL,
*errorlist = NULL;
Buffer *perr_buf = NULL; /* Buffer with error messages */
int WtOnMk = 1; /* Write the modified files when we make */
int WrapProcessLines = 1;
/* Add an error to the end of the list of errors. This is used for
parse-{C,LINT}-errors and for the spell-buffer command */
private struct error *
AddError(laste, errline, buf, line, charpos)
struct error *laste;
Line *errline,
*line;
Buffer *buf;
int charpos;
{
struct error *new = (struct error *) emalloc(sizeof *new);
new->er_prev = laste;
if (laste)
laste->er_next = new;
else {
if (errorlist) /* Free up old errors */
ErrFree();
cur_error = errorlist = new;
}
laste = new;
new->er_next = 0;
new->er_buf = buf;
new->er_text = line;
new->er_char = charpos;
new->er_mess = errline;
return new;
}
void
get_FL_info(fname, lineno)
char *fname,
*lineno;
{
putmatch(1, fname, (size_t)FILESIZE);
putmatch(2, lineno, (size_t)FILESIZE);
/* error had lineno followed fname, so switch the two */
if (!isdigit(lineno[0])) {
char tmp[FILESIZE];
strcpy(tmp, lineno);
strcpy(lineno, fname);
strcpy(fname, tmp);
}
}
/* Free up all the errors */
void
ErrFree()
{
register struct error *ep;
for (ep = errorlist; ep != 0; ep = ep->er_next)
free((char *) ep);
errorlist = cur_error = 0;
}
/* Parse errors of the form specified in ErrFmtStr in the current
buffer. Do a show error of the first error. This is neat because this
will work for any kind of output that prints a file name and a line
number on the same line. */
void
ErrParse()
{
struct RE_block re_blk;
Bufpos *bp;
char fname[FILESIZE],
lineno[FILESIZE];
int lnum,
last_lnum = -1;
struct error *ep = 0;
Buffer *buf,
*lastb = 0;
Line *err_line;
ErrFree(); /* This is important! */
ToFirst();
perr_buf = curbuf;
REcompile(ErrFmtStr, YES, &re_blk);
/* Find a line with a number on it. */
while ((bp = docompiled(FORWARD, &re_blk)) != NULL) {
SetDot(bp);
get_FL_info(fname, lineno);
buf = do_find((Window *) 0, fname, YES);
if (buf != lastb) {
lastb = buf;
last_lnum = -1; /* signals new file */
err_line = buf->b_first;
}
(void) chr_to_int(lineno, 10, NO, &lnum);
if (lnum == last_lnum) /* one error per line is nicer */
continue;
if (last_lnum == -1)
last_lnum = 1; /* that's where we really are */
err_line = next_line(err_line, lnum - last_lnum);
ep = AddError(ep, curline, buf, err_line, 0);
last_lnum = lnum;
}
if (cur_error != 0)
ShowErr();
}
/* Internal next error sets cur_error to the next error, taking the
argument count, supplied by the user, into consideration. */
private char errbounds[] = "You're at the %s error.",
noerrs[] = "No errors!";
private void
toerror(forward, num)
int forward,
num;
{
register struct error *e = cur_error;
if (e == 0)
complain(noerrs);
if ((forward && (e->er_next == 0)) ||
(!forward && (e->er_prev == 0)))
complain(errbounds, forward ? "last" : "first");
while (--num >= 0) {
if ((e = forward ? e->er_next : e->er_prev) == 0)
break;
cur_error = e;
}
}
void
NextError()
{
ToError(1);
}
void
PrevError()
{
ToError(0);
}
private int
okay_error()
{
return ((inlist(perr_buf->b_first, cur_error->er_mess)) &&
(inlist(cur_error->er_buf->b_first, cur_error->er_text)));
}
/* Go the the next error, if there is one. Put the error buffer in
one window and the buffer with the error in another window.
It checks to make sure that the error actually exists. */
void
ToError(forward)
int forward;
{
do {
toerror(forward, arg_value());
} while (!okay_error());
ShowErr();
}
int EWSize = 20; /* percentage of screen the error window
should be */
private void
set_wsize(wsize)
int wsize;
{
wsize = (LI * wsize) / 100;
if (wsize >= 1 && !one_windp())
WindSize(curwind, wsize - (curwind->w_height - 1));
}
/* Show the current error, i.e. put the line containing the error message
in one window, and the buffer containing the actual error in another
window. */
void
ShowErr()
{
Window *err_wind,
*buf_wind;
if (cur_error == 0)
complain(noerrs);
if (!okay_error()) {
rbell();
return;
}
err_wind = windbp(perr_buf);
buf_wind = windbp(cur_error->er_buf);
if (err_wind && !buf_wind) {
SetWind(err_wind);
pop_wind(cur_error->er_buf->b_name, NO, -1);
buf_wind = curwind;
} else if (!err_wind && buf_wind) {
SetWind(buf_wind);
pop_wind(perr_buf->b_name, NO, -1);
err_wind = curwind;
} else if (!err_wind && !buf_wind) {
pop_wind(perr_buf->b_name, NO, -1);
err_wind = curwind;
pop_wind(cur_error->er_buf->b_name, NO, -1);
buf_wind = curwind;
}
/* Put the current error message at the top of its Window */
SetWind(err_wind);
SetLine(cur_error->er_mess);
SetTop(curwind, (curwind->w_line = cur_error->er_mess));
set_wsize(EWSize);
/* now go to the the line with the error in the other window */
SetWind(buf_wind);
DotTo(cur_error->er_text, cur_error->er_char);
}
char ShcomBuf[LBSIZE];
/* Make a buffer name given the command `command', i.e. "fgrep -n foo *.c"
will return the buffer name "fgrep". */
char *
MakeName(command)
char *command;
{
static char bnm[50];
register char *cp = bnm,
c;
while ((c = *command++) != '\0' && (c == ' ' || c == '\t'))
;
do
*cp++ = c;
while ((c = *command++) != '\0' && (c != ' ' && c != '\t'));
*cp = 0;
strcpy(bnm, basename(bnm));
return bnm;
}
/* Run make, first writing all the modified buffers (if the WtOnMk flag is
non-zero), parse the errors, and go the first error. */
private char make_cmd[LBSIZE] = "make";
void
MakeErrors()
{
Window *old = curwind;
int status,
compilation;
if (WtOnMk)
put_bufs(0);
/* When we're not doing make or cc (i.e., the last command
was probably a grep or something) and the user just types
C-X C-E, he probably (possibly, hopefully, usually (in my
case)) doesn't want to do the grep again but rather wants
to do a make again; so we ring the bell and insert the
default command and let the person decide. */
compilation = (sindex("make", make_cmd) || sindex("cc", make_cmd));
if (is_an_arg() || !compilation) {
if (!compilation) {
rbell();
Inputp = make_cmd; /* insert the default for the user */
}
null_ncpy(make_cmd, ask(make_cmd, "Compilation command: "),
sizeof (make_cmd) - 1);
}
status = UnixToBuf(MakeName(make_cmd), YES, EWSize, YES, Shell, ShFlags, make_cmd, (char *) 0);
com_finish(status, make_cmd);
ErrParse();
if (!cur_error)
SetWind(old);
}
#ifdef SPELL
private void
SpelParse(bname)
char *bname;
{
Buffer *buftospel,
*wordsb;
char wordspel[100];
Bufpos *bp;
struct error *ep = 0;
ErrFree(); /* This is important! */
buftospel = curbuf;
wordsb = buf_exists(bname);
perr_buf = wordsb; /* This is important (buffer containing
error messages) */
SetBuf(wordsb);
ToFirst();
f_mess("Finding misspelled words ... ");
while (!lastp(curline)) {
swritef(wordspel, "\\<%s\\>", linebuf);
SetBuf(buftospel);
ToFirst();
while ((bp = dosearch(wordspel, 1, 1)) != NULL) {
SetDot(bp);
ep = AddError(ep, wordsb->b_dot, buftospel,
curline, curchar);
}
SetBuf(wordsb);
line_move(FORWARD, 1, NO);
}
add_mess("Done.");
SetBuf(buftospel);
ShowErr();
}
void
SpelBuffer()
{
char *Spell = "Spell",
com[100];
Window *savewp = curwind;
put_bufs(0);
swritef(com, "spell %s", curbuf->b_fname);
(void) UnixToBuf(Spell, YES, EWSize, YES, Shell, ShFlags, com, (char *) 0);
message("[Delete the irrelevant words and then type C-X C-C]");
ToFirst();
Recur();
SetWind(savewp);
SpelParse(Spell);
}
void
SpelWords()
{
char *buftospel;
Buffer *wordsb = curbuf;
if ((buftospel = ask_buf((Buffer *) 0)) == 0)
return;
SetBuf(do_select(curwind, buftospel));
SpelParse(wordsb->b_name);
}
#endif /* SPELL */
void
ShToBuf()
{
char bnm[128],
cmd[LBSIZE];
strcpy(bnm, ask((char *) 0, "Buffer: "));
strcpy(cmd, ask(ShcomBuf, "Command: "));
DoShell(bnm, cmd);
}
void
ShellCom()
{
null_ncpy(ShcomBuf, ask(ShcomBuf, ProcFmt), (sizeof ShcomBuf) - 1);
DoShell(MakeName(ShcomBuf), ShcomBuf);
}
void
ShNoBuf()
{
int status;
null_ncpy(ShcomBuf, ask(ShcomBuf, ProcFmt), (sizeof ShcomBuf) - 1);
status = UnixToBuf((char *) 0, NO, 0, NO, Shell, ShFlags, ShcomBuf,
curbuf->b_fname, curbuf->b_fname, (char *) 0);
com_finish(status, ShcomBuf);
}
void
Shtypeout()
{
int status;
null_ncpy(ShcomBuf, ask(ShcomBuf, ProcFmt), (sizeof ShcomBuf) - 1);
status = UnixToBuf((char *) 0, YES, 0, NO, Shell, ShFlags, ShcomBuf,
curbuf->b_fname, curbuf->b_fname, (char *) 0);
if (status == 0)
Typeout("[%s: completed successfully]", ShcomBuf);
else
Typeout("[%s: exited (%d)]", ShcomBuf, status);
TOstop();
}
/* Run the shell command into `bnm'. Empty the buffer except when we
give a numeric argument, in which case it inserts the output at the
current position in the buffer. */
private void
DoShell(bnm, command)
char *bnm,
*command;
{
Window *savewp = curwind;
int status;
char *fn = pr_name(curbuf->b_fname, NO);
/* Two copies of the file name are passed to the shell:
* The Cshell uses the first as a definition of $1
* Most version of the Bourne shell use the second as a definition of $1.
*/
status = UnixToBuf(bnm, YES, 0, !is_an_arg(), Shell, ShFlags,
command, fn, fn, (char *)NULL);
com_finish(status, command);
SetWind(savewp);
}
private void
com_finish(status, cmd)
int status;
char *cmd;
{
s_mess("[%s: ", cmd);
if (status == 0)
add_mess("completed successfully");
else
add_mess("exited (%d)", status);
add_mess("]");
}
#ifndef MSDOS
void
dowait(pid, status)
int pid,
*status;
{
# ifndef IPROCS
int rpid;
while ((rpid = wait(status)) != pid)
;
# else
# include "wait.h"
union wait w;
int rpid;
for (;;) {
# ifndef WAIT3
rpid = wait2(&w.w_status, 0);
# else
rpid = wait3(&w, 0, (struct rusage *) 0);
# endif
if (rpid == -1)
break;
else if (rpid == pid) {
if (status)
*status = w.w_status;
break;
} else
kill_off(rpid, w);
}
# endif /* IPROCS */
}
#endif /* MSDOS */
/* Run the command to bnm, erase the buffer if clobber is non-zero,
and redisplay if disp is non-zero. Leaves current buffer in `bnm'
and leaves any windows it creates lying around. It's up to the caller
to fix everything up after we're done. (Usually there's nothing to
fix up.) */
#ifdef STDARGS
int
UnixToBuf(char *bnm, int disp, int wsize, int clobber, ...)
#else
/*VARARGS4*/ int
UnixToBuf(bnm, disp, wsize, clobber, va_alist)
char *bnm;
int disp;
int wsize;
int clobber;
va_dcl
#endif
{
#ifndef MSDOS
int p[2],
pid,
status,
#else /* MSDOS */
int p0,
oldo,
olde,
retcode,
#endif /* MSDOS */
eof;
va_list ap;
char *argv[32],
*mess;
File *fp;
SIGRESULT (*old_int) proto((int));
va_init(ap, clobber);
make_argv(argv, ap);
va_end(ap);
if (bnm != 0 && clobber == YES)
isprocbuf(bnm);
if (disp) {
if (bnm != 0)
message("Starting up...");
else {
TOstart(argv[0], TRUE);
Typeout("Starting up...");
}
if (bnm != 0) {
pop_wind(bnm, clobber, clobber ? B_PROCESS : B_FILE);
set_wsize(wsize);
redisplay();
}
}
/* Now I will attempt to describe how I deal with signals during
the execution of the shell command. My desire was to be able
to interrupt the shell command AS SOON AS the window pops up.
So, if we have JOB_CONTROL (i.e., the new signal mechanism) I
hold SIGINT, meaning if we interrupt now, we will eventually
see the interrupt, but not before we are ready for it. We
fork, the child releases the interrupt, it then sees the
interrupt, and so exits. Meanwhile the parent ignores the
signal, so if there was a pending one, it's now lost.
With no JOB_CONTROL, the best behavior you can expect is, when
you type ^] too very quickly after the window pops up, it may
be ignored. The behavior BEFORE was that it would interrupt
JOVE and then you would have to continue JOVE and wait a
little while longer before trying again. Now that is fixed,
in that you just have to type it twice. */
#ifndef MSDOS
# ifdef IPROCS
SigHold(SIGCHLD);
# endif
# ifdef JOB_CONTROL
SigHold(SIGINT);
# else
old_int = signal(SIGINT, SIG_IGN),
# endif
dopipe(p);
pid = vfork();
if (pid == -1) {
pipeclose(p);
complain("[Fork failed]");
}
if (pid == 0) {
# ifdef BSD_SIGS
/*
* We want to release SIGCHLD and SIGINT in the child, but
* we can't use SigRelse because that would change Jove's
* copy of the SigMask variable (because we're in a
* vfork). So we simply set set the mask directly. There
* are several other forks in Jove, but this is the only
* one we execute often enough to make it worth using a
* vfork.
*/
(void) signal(SIGINT, SIG_DFL);
(void) sigsetmask(SigMask & ~(sigmask(SIGCHLD)|sigmask(SIGINT)));
# else /* BSD_SIGS */
# ifdef IPROCS
SigRelse(SIGCHLD); /* don't know if this matters */
# endif /* IPROCS */
(void) signal(SIGINT, SIG_DFL);
# ifdef JOB_CONTROL
SigRelse(SIGINT);
# endif
# endif /* BSD_SIGS */
(void) close(0);
(void) open("/dev/null", 0);
(void) close(1);
(void) close(2);
(void) dup(p[1]);
(void) dup(p[1]);
pipeclose(p);
execv(argv[0], (const char **) &argv[1]);
(void) write(1, "Execl failed.\n", (size_t) 14);
_exit(1);
}
# ifdef JOB_CONTROL
old_int = signal(SIGINT, SIG_IGN);
# endif
(void) close(p[1]);
fp = fd_open(argv[1], F_READ, p[0], iobuff, LBSIZE);
#else /* MSDOS */
if ((p0 = openforpipe()) < 0)
complain("cannot make pipe for filter");
oldo = dup(1);
olde = dup(2);
close(1);
close(2);
dup(p0);
dup(1);
close(p0);
retcode = spawnv(0, argv[0], &argv[1]);
p0 = reopenforpipe();
close(1);
close(2);
dup(oldo);
dup(olde);
close(oldo);
close(olde);
if (retcode < 0)
complain("[Spawn failed]");
fp = fd_open(argv[1], F_READ, p0, iobuff, LBSIZE);
#endif /* MSDOS */
do {
int wrap_col = WrapProcessLines ? CO : -1;
#ifndef MSDOS
inIOread = 1;
#endif
eof = f_gets(fp, genbuf, (size_t)LBSIZE);
#ifndef MSDOS
inIOread = 0;
#endif
if (bnm != 0) {
ins_str(genbuf, YES, wrap_col);
if (!eof)
LineInsert(1);
} else if (disp == YES)
Typeout("%s", genbuf);
if (bnm != 0 && disp != 0 && fp->f_cnt <= 0) {
#ifdef LOAD_AV
{
double theavg;
get_la(&theavg);
if (theavg < 2.0)
mess = "Screaming along...";
else if (theavg < 5.0)
mess = "Chugging along...";
else
mess = "Crawling along...";
}
#else
mess = "Chugging along...";
#endif /* LOAD_AV */
if (bnm != 0) {
message(mess);
redisplay();
}
}
} while (!eof);
if (disp)
DrawMesg(NO);
close_file(fp);
#ifndef MSDOS
dowait(pid, &status);
# ifdef JOB_CONTROL
(void) SigRelse(SIGINT);
# endif
#else /* MSDOS */
closepipe();
#endif /* MSDOS */
(void) signal(SIGINT, old_int);
#ifndef MSDOS
# ifdef IPROCS
SigRelse(SIGCHLD);
# endif
return status;
#else /* MSDOS */
getCWD();
return retcode;
#endif /* MSDOS */
}
/* Send the current region to CMD and insert the output from the
command into OUT_BUF. */
void
RegToUnix(outbuf, cmd)
Buffer *outbuf;
char *cmd;
{
Mark *m = CurMark();
#ifndef MSDOS
static char tnambuf[20];
char *tname,
combuf[LBSIZE];
#endif /* MSDOS */
Window *save_wind = curwind;
int status,
err = NO;
#ifdef MSDOS
int p0, oldi;
#endif /* MSDOS */
File *fp;
#ifndef MSDOS
strcpy (tnambuf, "/tmp/jfilterXXXXXX");
tname = mktemp(tnambuf);
fp = open_file(tname, iobuff, F_WRITE, YES, YES);
#else /* MSDOS */
p0 = openforpipe();
#endif /* MSDOS */
CATCH
#ifdef MSDOS
fp = fd_open(cmd, F_WRITE, p0, iobuff, LBSIZE);
#endif /* MSDOS */
if (m->m_line != curline || m->m_char != curchar) {
putreg(fp, m->m_line, m->m_char, curline, curchar, YES);
DelReg();
}
#ifndef MSDOS
swritef(combuf, "%s < %s", cmd, tname);
#else /* MSDOS */
f_close(fp);
p0 = reopenforpipe();
oldi = dup(0);
close(0);
dup(p0);
close(p0);
#endif /* MSDOS */
status = UnixToBuf(outbuf->b_name, NO, 0, outbuf->b_type == B_SCRATCH,
#ifndef MSDOS
Shell, ShFlags, combuf, (char *) 0
#else /* MSDOS */
Shell, ShFlags, cmd, (char *) 0
#endif /* MSDOS */
);
ONERROR
err = YES;
ENDCATCH
#ifndef MSDOS
f_close(fp);
(void) unlink(tname);
#else /* MSDOS */
close(0);
open("con", 0); /* dup(oldi); */
close(oldi);
closepipe();
#endif /* MSDOS */
SetWind(save_wind);
if (err == NO)
#ifndef MSDOS
com_finish(status, combuf);
#else
com_finish(status, cmd);
#endif
}
void
FilterRegion()
{
static char FltComBuf[LBSIZE];
null_ncpy(FltComBuf, ask(FltComBuf, ": %f (through command) "),
(sizeof FltComBuf) - 1);
RegToUnix(curbuf, FltComBuf);
}
void
isprocbuf(bnm)
char *bnm;
{
Buffer *bp;
if ((bp = buf_exists(bnm)) != 0 && bp->b_type != B_PROCESS)
confirm("Over-write buffer %s?", bnm);
}
#ifdef MSDOS
/* msdos specific hacks to allow for pipes */
#include <dos.h>
#include <fcntl.h>
#include <sys/stat.h>
static char pipeiname[64];
static char pipeoname[64];
static int pipehandle;
private int
openforpipe()
{
swritef(pipeiname, "%s/%s", TmpFilePath, "Jove-I");
swritef(pipeoname, "%s/%s", TmpFilePath, "Jove-O");
return(pipehandle = creat(pipeoname, S_IWRITE|S_IREAD));
}
private int
reopenforpipe()
{
close(pipehandle);
unlink(pipeiname);
rename(pipeoname, pipeiname);
if ((pipehandle = open(pipeiname, 0)) >= 0)
return(pipehandle);
closepipe();
return(-1);
}
private void
closepipe()
{
unlink(pipeoname);
unlink(pipeiname);
}
char
switchar()
{
union REGS regs;
regs.h.ah = 0x37;
regs.h.al = 0;
intdos(®s, ®s);
return(regs.h.dl);
}
#endif /* MSDOS */
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