/*************************************************************************** * 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 "rec.h" #include <signal.h> #ifdef STDARGS # include <stdarg.h> #else # include <varargs.h> #endif #ifdef MSDOS # include <io.h> # include <process.h> # include <sys/stat.h> #endif private void DoShell proto((char *, char *)), com_finish proto((int, char *)); 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 */ bool WtOnMk = ON; /* Write the modified files when we make */ /* Eliminate any error records that contain dangling references to Lines. * We only eliminate error structs when either referent is recycled. * If it deleted, we keep it (dormant) in case it will be pasted back * into the same buffer. */ void ChkErrorLines() { register struct error *e; struct error *prev = NULL; for (e = errorlist; e != NULL; ) { struct error *next = e->er_next; if (e->er_mess->l_dline == NULL_DADDR || e->er_text->l_dline == NULL_DADDR) { /* dangling reference: delete */ if (prev == NULL) errorlist = next; else prev->er_next = next; if (next != NULL) next->er_prev = prev; if (cur_error == e) cur_error = next; free((UnivPtr)e); } else { prev = e; } e = next; } } /* 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 = NULL; 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 (!jisdigit(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 != NULL; ep = ep->er_next) free((UnivPtr) ep); errorlist = cur_error = NULL; } /* 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 = NULL; Buffer *buf, *lastb = NULL; 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 *)NULL, 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 != NULL) ShowErr(); } private void NeedErrors() { if (cur_error == NULL) complain("No errors!"); } private bool ErrorHasReferents() { return inlist(cur_error->er_buf->b_first, cur_error->er_text) && inlist(perr_buf->b_first, cur_error->er_mess); } /* 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. */ private void ToError(forward) bool forward; { register struct error *e = cur_error; int num = arg_value(); NeedErrors(); if ((forward? e->er_next : e->er_prev) == NULL) complain("You're at the %s error.", forward ? "last" : "first"); while (--num >= 0 || !ErrorHasReferents()) { e = forward ? e->er_next : e->er_prev; if (e == NULL) break; cur_error = e; } ShowErr(); } void NextError() { ToError(TRUE); } void PrevError() { ToError(FALSE); } 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; NeedErrors(); if (!ErrorHasReferents()) { 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; do ; 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 on), parse the errors, and go the first error. */ private char make_cmd[LBSIZE] = "make"; void MakeErrors() { Window *old = curwind; int status; bool compilation; if (WtOnMk) put_bufs(FALSE); /* 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), (char *)NULL, YES, EWSize, YES, Shell, ShFlags, make_cmd, (char *)NULL); 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 = NULL; 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, sizeof(wordspel), "\\<%s\\>", linebuf); SetBuf(buftospel); ToFirst(); while ((bp = dosearch(wordspel, FORWARD, NO)) != 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; if (curbuf->b_fname == NULL) complain("no file name"); if (IsModified(curbuf)) SaveFile(); swritef(com, sizeof(com), "spell %s", curbuf->b_fname); (void) UnixToBuf(Spell, (char *)NULL, YES, EWSize, YES, Shell, ShFlags, com, (char *) NULL); 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 *)NULL)) == NULL) return; SetBuf(do_select(curwind, buftospel)); SpelParse(wordsb->b_name); } #endif /* SPELL */ void ShToBuf() { char bnm[128], cmd[LBSIZE]; strcpy(bnm, ask((char *)NULL, "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 *)NULL, (char *)NULL, NO, 0, NO, Shell, ShFlags, ShcomBuf, curbuf->b_fname, curbuf->b_fname, (char *)NULL); com_finish(status, ShcomBuf); } void Shtypeout() { int status; null_ncpy(ShcomBuf, ask(ShcomBuf, ProcFmt), (sizeof ShcomBuf) - 1); status = UnixToBuf((char *)NULL, (char *)NULL, YES, 0, NO, Shell, ShFlags, ShcomBuf, curbuf->b_fname, curbuf->b_fname, (char *)NULL); 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, (char *)NULL, 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; do ; 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 *)NULL); # 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, char *InFName, bool disp, int wsize, bool clobber, ...) #else /*VARARGS5*/ int UnixToBuf(bnm, InFName, disp, wsize, clobber, va_alist) char *bnm, *InFName; bool disp; int wsize; bool clobber; va_dcl #endif { #ifndef MSDOS int p[2], pid; #else /* MSDOS */ char pnbuf[FILESIZE]; char *pipename; #endif /* MSDOS */ int status; bool 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 != NULL && clobber == YES) isprocbuf(bnm); if (access(argv[0], X_OK) != 0) { complain("[Couldn't access %s: %s]", argv[0], strerror(errno)); /* NOTREACHED */ } if (disp) { if (bnm != NULL) { message("Starting up..."); pop_wind(bnm, clobber, clobber ? B_PROCESS : B_FILE); set_wsize(wsize); redisplay(); } else { TOstart(argv[0], TRUE); Typeout("Starting up..."); } } /* 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 BSD_SIGS (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 BSD_SIGS, 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 BSD_SIGS SigHold(SIGINT); # else old_int = signal(SIGINT, SIG_IGN), # endif dopipe(p); #ifdef VFORK pid = vfork(); #else pid = fork(); #endif if (pid == -1) { pipeclose(p); complain("[Fork failed: %s]", strerror(errno)); } if (pid == 0) { # ifdef VFORK /* * 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. This assumes a system with vfork also * has BSD signals! */ (void) signal(SIGINT, SIG_DFL); (void) sigsetmask(SigMask & ~(sigmask(SIGCHLD)|sigmask(SIGINT))); # else /* !VFORK */ # ifdef IPROCS SigRelse(SIGCHLD); /* don't know if this matters */ # endif /* IPROCS */ (void) signal(SIGINT, SIG_DFL); # ifdef BSD_SIGS SigRelse(SIGINT); # endif /* BSD_SIGS */ # endif /* !VFORK */ (void) close(0); (void) open(InFName==NULL? "/dev/null" : InFName, 0); (void) close(1); (void) close(2); (void) dup(p[1]); (void) dup(p[1]); pipeclose(p); jcloseall(); execv(argv[0], (const char **) &argv[1]); raw_complain("Execl failed: %s\n", strerror(errno)); _exit(1); } # ifdef BSD_SIGS old_int = signal(SIGINT, SIG_IGN); # endif (void) close(p[1]); fp = fd_open(argv[1], F_READ, p[0], iobuff, LBSIZE); #else /* MSDOS */ { int oldi = dup(0), oldo = dup(1), olde = dup(2); bool InFailure = FALSE; int ph; swritef(pnbuf, sizeof(pnbuf), "%s/%s", TmpFilePath, "jpXXXXXX"); pipename = mktemp(pnbuf); if ((ph = creat(pipename, S_IWRITE|S_IREAD)) < 0) complain("cannot make pipe for filter: %s", strerror(errno)); close(1); close(2); dup(ph); dup(ph); close(0); if (InFName == NULL) if (open(InFName, 0) < 0) InFailure = TRUE; if (!InFailure) status = spawnv(0, argv[0], &argv[1]); close(0); close(1); close(2); dup(oldi); dup(oldo); dup(olde); close(oldi); close(oldo); close(olde); if (InFailure) complain("[filter input failed]"); if (status < 0) complain("[Spawn failed]"); ph = open(pipename, 0); if (ph < 0) complain("[cannot reopen pipe]", strerror(errno)); fp = fd_open(argv[1], F_READ, ph, iobuff, LBSIZE); } #endif /* MSDOS */ do { #ifndef MSDOS inIOread = YES; #endif eof = f_gets(fp, genbuf, (size_t)LBSIZE); #ifndef MSDOS inIOread = NO; #endif if (bnm != NULL) { ins_str(genbuf, YES); if (!eof) LineInsert(1); } else if (disp) Typeout("%s", genbuf); if (bnm != NULL && disp && fp->f_cnt <= 0) { #ifdef LOAD_AV { int la = get_la(); if (la < 200) mess = "Screaming along..."; else if (la < 500) mess = "Chugging along..."; else mess = "Crawling along..."; } #else mess = "Chugging along..."; #endif /* LOAD_AV */ if (bnm != NULL) { message(mess); redisplay(); } } } while (!eof); if (disp) DrawMesg(NO); close_file(fp); #ifndef MSDOS dowait(pid, &status); # ifdef BSD_SIGS (void) SigRelse(SIGINT); # endif # ifdef IPROCS SigRelse(SIGCHLD); # endif #else /* MSDOS */ unlink(pipename); getCWD(); #endif /* MSDOS */ (void) signal(SIGINT, old_int); return status; } /* Send the current region to CMD and insert the output from the command into OUT_BUF. */ private void RegToUnix(outbuf, cmd) Buffer *outbuf; char *cmd; { Mark *m = CurMark(); static char tnambuf[FILESIZE]; char *tname; Window *save_wind = curwind; volatile int status; volatile int err = NO; File *volatile fp; jmp_buf sav_jmp; swritef(tnambuf, sizeof(tnambuf), "%s/%s", TmpFilePath, "jfXXXXXX"); tname = mktemp(tnambuf); fp = open_file(tname, iobuff, F_WRITE, YES, YES); push_env(sav_jmp); if (setjmp(mainjmp) == 0) { putreg(fp, m->m_line, m->m_char, curline, curchar, YES); DelReg(); f_close(fp); status = UnixToBuf(outbuf->b_name, tname, NO, 0, outbuf->b_type==B_SCRATCH, Shell, ShFlags, cmd, (char *)NULL); } else { f_close(fp); err = YES; } pop_env(sav_jmp); (void) unlink(tname); SetWind(save_wind); if (!err) com_finish(status, cmd); } 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)) != NULL && bp->b_type != B_PROCESS) confirm("Over-write buffer %s? ", bnm); } #ifdef MSDOS /* ??? how many of these includes are redundant? Are they needed in RegToUnix()? */ #include <dos.h> #include <fcntl.h> /* ??? Set the DOS path separator character to '/' from '\\' */ char switchar() { union REGS regs; regs.h.ah = 0x37; regs.h.al = 0; intdos(®s, ®s); return regs.h.dl; } #endif /* MSDOS */