File: [local] / src / usr.bin / mg / grep.c (download)
Revision 1.16, Tue Aug 9 00:53:48 2005 UTC (18 years, 9 months ago) by kjell
Branch: MAIN
CVS Tags: OPENBSD_3_8_BASE, OPENBSD_3_8 Changes since 1.15: +12 -6 lines
Clean up eread handling in mg. (basically, fallout from the 'enter often
means abort' behaviour added during the hackathon). Eliminates
redundant ereply function, fixes miscellaneous cores when aborting,
and move a number of assumed pathnames into the prompt text, since
they are used there anyway. All changes consistent with emacs behavior
ok beck@ many, many moons ago.
|
/* $OpenBSD: grep.c,v 1.16 2005/08/09 00:53:48 kjell Exp $ */
/*
* Copyright (c) 2001 Artur Grabowski <art@openbsd.org>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "def.h"
#include "kbd.h"
#include "funmap.h"
#include <ctype.h>
static int compile_goto_error(int, int);
static int next_error(int, int);
static int grep(int, int);
static int compile(int, int);
static int gid(int, int);
static BUFFER *compile_mode(char *, char *);
void grep_init(void);
static char compile_last_command[NFILEN] = "make ";
/*
* Hints for next-error
*
* XXX - need some kind of callback to find out when those get killed.
*/
MGWIN *compile_win;
BUFFER *compile_buffer;
static PF compile_pf[] = {
compile_goto_error
};
static struct KEYMAPE (1 + IMAPEXT) compilemap = {
1,
1 + IMAPEXT,
rescan,
{
{ CCHR('M'), CCHR('M'), compile_pf, NULL }
}
};
void
grep_init(void)
{
funmap_add(compile_goto_error, "compile-goto-error");
funmap_add(next_error, "next-error");
funmap_add(grep, "grep");
funmap_add(compile, "compile");
funmap_add(gid, "gid");
maps_add((KEYMAP *)&compilemap, "compile");
}
static int
grep(int f, int n)
{
char command[NFILEN + 20];
char prompt[NFILEN], *bufp;
BUFFER *bp;
MGWIN *wp;
(void)strlcpy(prompt, "grep -n ", sizeof(prompt));
if ((bufp = eread("Run grep: ", prompt, NFILEN,
EFDEF | EFNEW | EFCR)) == NULL)
return (ABORT);
else if (bufp[0] == '\0')
return (FALSE);
(void)snprintf(command, sizeof(command), "%s /dev/null", bufp);
if ((bp = compile_mode("*grep*", command)) == NULL)
return (FALSE);
if ((wp = popbuf(bp)) == NULL)
return (FALSE);
curbp = bp;
compile_win = curwp = wp;
return (TRUE);
}
static int
compile(int f, int n)
{
char command[NFILEN + 20];
char prompt[NFILEN], *bufp;
BUFFER *bp;
MGWIN *wp;
(void)strlcpy(prompt, compile_last_command, sizeof(prompt));
if ((bufp = eread("Compile command: ", prompt, NFILEN,
EFDEF | EFNEW | EFCR)) == NULL)
return (ABORT);
else if (bufp[0] == '\0')
return (FALSE);
if (savebuffers(f, n) == ABORT)
return (ABORT);
(void)strlcpy(compile_last_command, bufp, sizeof(compile_last_command));
(void)snprintf(command, sizeof(command), "%s 2>&1", bufp);
if ((bp = compile_mode("*compile*", command)) == NULL)
return (FALSE);
if ((wp = popbuf(bp)) == NULL)
return (FALSE);
curbp = bp;
compile_win = curwp = wp;
return (TRUE);
}
/* id-utils foo. */
static int
gid(int f, int n)
{
char command[NFILEN + 20];
char prompt[NFILEN], c, *bufp;
BUFFER *bp;
MGWIN *wp;
int i, j;
/* catch ([^\s(){}]+)[\s(){}]* */
i = curwp->w_doto;
/* Skip backwards over delimiters we are currently on */
while (i > 0) {
c = lgetc(curwp->w_dotp, i);
if (isalnum(c) || c == '_')
break;
i--;
}
/* Skip the symbol itself */
for (; i > 0; i--) {
c = lgetc(curwp->w_dotp, i - 1);
if (!isalnum(c) && c != '_')
break;
}
/* Fill the symbol in prompt[] */
for (j = 0; j < sizeof(prompt) - 1 && i < llength(curwp->w_dotp);
j++, i++) {
c = lgetc(curwp->w_dotp, i);
if (!isalnum(c) && c != '_')
break;
prompt[j] = c;
}
prompt[j] = '\0';
if ((bufp = eread("Run gid (with args): ", prompt, NFILEN,
(j ? EFDEF : 0) | EFNEW | EFCR)) == NULL)
return (ABORT);
else if (bufp[0] == '\0')
return (FALSE);
(void)snprintf(command, sizeof(command), "gid %s", prompt);
if ((bp = compile_mode("*gid*", command)) == NULL)
return (FALSE);
if ((wp = popbuf(bp)) == NULL)
return (FALSE);
curbp = bp;
compile_win = curwp = wp;
return (TRUE);
}
BUFFER *
compile_mode(char *name, char *command)
{
BUFFER *bp;
FILE *pipe;
char *buf;
size_t len;
int ret;
bp = bfind(name, TRUE);
if (bclear(bp) != TRUE)
return (NULL);
addlinef(bp, "Running (%s).", command);
addline(bp, "");
if ((pipe = popen(command, "r")) == NULL) {
ewprintf("Problem opening pipe");
return (NULL);
}
/*
* We know that our commands are nice and the last line will end with
* a \n, so we don't need to try to deal with the last line problem
* in fgetln.
*/
while ((buf = fgetln(pipe, &len)) != NULL) {
buf[len - 1] = '\0';
addline(bp, buf);
}
ret = pclose(pipe);
addline(bp, "");
addlinef(bp, "Command (%s) completed %s.", command,
ret == 0 ? "successfully" : "with errors");
bp->b_dotp = lforw(bp->b_linep); /* go to first line */
bp->b_modes[0] = name_mode("fundamental");
bp->b_modes[1] = name_mode("compile");
bp->b_nmodes = 1;
compile_buffer = bp;
return (bp);
}
static int
compile_goto_error(int f, int n)
{
BUFFER *bp;
MGWIN *wp;
char *fname, *line, *lp, *ln, *lp1;
int lineno, len;
char *adjf;
compile_win = curwp;
compile_buffer = curbp;
retry:
len = llength(curwp->w_dotp);
if ((line = malloc(len + 1)) == NULL)
return (FALSE);
(void)memcpy(line, curwp->w_dotp->l_text, len);
line[len] = '\0';
lp = line;
if ((fname = strsep(&lp, ":")) == NULL)
goto fail;
if ((ln = strsep(&lp, ":")) == NULL)
goto fail;
lineno = strtol(ln, &lp1, 10);
if (lp != lp1 + 1)
goto fail;
adjf = adjustname(fname);
free(line);
if (adjf == NULL)
return (FALSE);
if ((bp = findbuffer(adjf)) == NULL)
return (FALSE);
if ((wp = popbuf(bp)) == NULL)
return (FALSE);
curbp = bp;
curwp = wp;
if (bp->b_fname[0] == 0)
readin(adjf);
gotoline(FFARG, lineno);
return (TRUE);
fail:
free(line);
if (curwp->w_dotp != lback(curbp->b_linep)) {
curwp->w_dotp = lforw(curwp->w_dotp);
curwp->w_flag |= WFMOVE;
goto retry;
}
ewprintf("No more hits");
return (FALSE);
}
static int
next_error(int f, int n)
{
if (compile_win == NULL || compile_buffer == NULL) {
ewprintf("No compilation active");
return (FALSE);
}
curwp = compile_win;
curbp = compile_buffer;
if (curwp->w_dotp == lback(curbp->b_linep)) {
ewprintf("No more hits");
return (FALSE);
}
curwp->w_dotp = lforw(curwp->w_dotp);
curwp->w_flag |= WFMOVE;
return (compile_goto_error(f, n));
}