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/* $Id$ */
/**************************************************************************
* rcfile.c *
* *
* Copyright (C) 1999 Chris Allegretta *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 1, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
**************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "config.h"
#include "proto.h"
#include "nano.h"
#ifdef ENABLE_NANORC
#ifndef NANO_SMALL
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif
#define NUM_RCOPTS 15
/* Static stuff for the nanorc file */
rcoption rcopts[NUM_RCOPTS] =
{
{"regexp", USE_REGEXP},
{"const", CONSTUPDATE},
{"autoindent", AUTOINDENT},
{"cut", CUT_TO_END},
{"nofollow", FOLLOW_SYMLINKS},
{"mouse", USE_MOUSE},
{"pico", PICO_MODE},
#ifndef DISABLE_WRAPJUSTIFY
{"fill", 0},
#endif
{"speller", 0},
{"tempfile", TEMP_OPT},
{"view", VIEW_MODE},
{"nowrap", NO_WRAP},
{"nohelp", NO_HELP},
{"suspend", SUSPEND},
{"multibuffer", MULTIBUFFER}};
/* We have an error in some part of the rcfile; put it on stderr and
make the user hit return to continue starting up nano */
void rcfile_error(char *msg, ...)
{
va_list ap;
fprintf(stderr, "\n");
va_start(ap, msg);
vfprintf(stderr, msg, ap);
va_end(ap);
fprintf(stderr, _("\nPress return to continue starting nano\n"));
while (getchar() != '\n')
;
}
/* Just print the error (one of many, perhaps) but don't abort, yet */
void rcfile_msg(int *errors, char *msg, ...)
{
va_list ap;
if (!*errors) {
*errors = 1;
fprintf(stderr, "\n");
}
va_start(ap, msg);
vfprintf(stderr, msg, ap);
va_end(ap);
fprintf(stderr, "\n");
}
/* Parse the next word from the string. Returns NULL if we hit EOL */
char *parse_next_word(char *ptr)
{
while (*ptr != ' ' && *ptr != '\n' && ptr != '\0')
ptr++;
if (*ptr == '\0')
return NULL;
/* Null terminate and advance ptr */
*ptr++ = 0;
return ptr;
}
/* Parse the RC file, once it has been opened successfully */
void parse_rcfile(FILE *rcstream, char *filename)
{
char *buf, *ptr, *keyword, *option;
int set = 0, lineno = 0, i;
int errors = 0;
buf = charalloc(1024);
while (fgets(buf, 1023, rcstream) > 0) {
lineno++;
ptr = buf;
while ((*ptr == ' ' || *ptr == '\t') &&
(*ptr != '\n' && *ptr != '\0'))
ptr++;
if (*ptr == '\n' || *ptr == '\0')
continue;
if (*ptr == '#') {
#ifdef DEBUG
fprintf(stderr, _("parse_rcfile: Read a comment\n"));
#endif
continue; /* Skip past commented lines */
}
/* Else skip to the next space */
keyword = ptr;
ptr = parse_next_word(ptr);
if (!ptr)
continue;
/* Else try to parse the keyword */
if (!strcasecmp(keyword, "set"))
set = 1;
else if (!strcasecmp(keyword, "unset"))
set = -1;
else {
rcfile_msg(&errors, _("Error in %s on line %d: command %s not understood"),
filename, lineno, keyword);
continue;
}
option = ptr;
ptr = parse_next_word(ptr);
/* We don't care if ptr == NULL, as it should if using proper syntax */
if (set != 0) {
for (i = 0; i <= NUM_RCOPTS - 1; i++) {
if (!strcasecmp(option, rcopts[i].name)) {
#ifdef DEBUG
fprintf(stderr, _("parse_rcfile: Parsing option %s\n"),
rcopts[i].name);
#endif
if (set == 1 || rcopts[i].flag == FOLLOW_SYMLINKS) {
if (
#ifndef DISABLE_WRAPJUSTIFY
!strcasecmp(rcopts[i].name, "fill") ||
#endif
#ifndef DISABLE_SPELLER
!strcasecmp(rcopts[i].name, "speller")
#else
0
#endif
) {
if (*ptr == '\n' || *ptr == '\0') {
rcfile_msg(&errors, _("Error in %s on line %d: option %s requires an argument"),
filename, lineno, rcopts[i].name);
continue;
}
option = ptr;
ptr = parse_next_word(ptr);
if (!strcasecmp(rcopts[i].name, "fill")) {
#ifndef DISABLE_WRAPJUSTIFY
if ((i = atoi(option)) < MIN_FILL_LENGTH) {
rcfile_msg(&errors,
_("Error in %s on line %d: requested fill size %d too small"),
filename, lineno, option);
}
else
fill = i;
#endif
}
else {
#ifndef DISABLE_SPELLER
alt_speller = charalloc(strlen(option) + 1);
strcpy(alt_speller, option);
#endif
}
} else
SET(rcopts[i].flag);
#ifdef DEBUG
fprintf(stderr, _("set flag %d!\n"), rcopts[i].flag);
#endif
} else {
UNSET(rcopts[i].flag);
#ifdef DEBUG
fprintf(stderr, _("unset flag %d!\n"), rcopts[i].flag);
#endif
}
}
}
}
}
if (errors)
rcfile_error(_("Errors found in .nanorc file"));
return;
}
/* The main rc file function, tries to open the rc file */
void do_rcfile(void)
{
char *nanorc;
char *unable = _("Unable to open ~/.nanorc file, %s");
struct stat fileinfo;
FILE *rcstream;
if (getenv("HOME") == NULL)
return;
nanorc = charalloc(strlen(getenv("HOME")) + 10);
sprintf(nanorc, "%s/.nanorc", getenv("HOME"));
if (stat(nanorc, &fileinfo) == -1) {
/* Abort if the file doesn't exist and there's some other kind
of error stat()ing it */
if (errno != ENOENT)
rcfile_error(unable, errno);
return;
}
if ((rcstream = fopen(nanorc, "r")) == NULL) {
rcfile_error(unable, strerror(errno));
return;
}
parse_rcfile(rcstream, nanorc);
fclose(rcstream);
}
#endif /* ENABLE_NANORC */