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/*
Misc functions
$Id: misc.c,v 1.12 2009/03/21 17:44:22 alexsisson Exp $
(C) Copyright 2005-2009 Alex Sisson (alexsisson@gmail.com)
This file is part of bosh.
bosh is free software; you can redistribute it and/or modify
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
bosh 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 bosh; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <sys/file.h>
#include <regex.h>
#include "misc.h"
#include "stray.h"
char *strdup2(const char *s1, const char *s2) {
char *r;
r = malloc(strlen(s1)+strlen(s2)+1);
if(r) {
sprintf(r,"%s%s",s1,s2);
}
return r;
}
/* makes a \0 terminated string of length len filled with c */
char *strmak(size_t len, int c) {
static char *buf = NULL;
free(buf);
buf = malloc(len+1);
if(buf) {
memset(buf,c,len);
buf[len] = 0;
}
return buf;
}
char *strswp(char *s, int c, int replace) {
char *p = strchr(s,c);
if(p)
*p = replace;
return p;
}
/* creates optstring arg (short opts) from option structure */
char *getopt_mkoptstring(struct option *longopts)
{
int n = 0;
char *optstring,*p;
struct option *o = longopts;
while(o->name || o->has_arg || o->flag || o->val) {
n += 1 + o->has_arg;
if(o->flag)
return NULL; /* fail because not returning o->val */
o++;
}
p = optstring = malloc(n+1);
o = longopts;
while(o->name || o->has_arg || o->flag || o->val) {
*p++ = o->val;
n = o->has_arg;
while(n--)
*p++ = ':';
o++;
}
*p = 0;
return optstring;
}
/* fatal error message and exit */
void bosh_fatal_err(int code, char *format, ...) {
va_list v;
#ifdef LOG
char s[512];
va_start(v,format);
vsprintf(s,format,v);
va_end(v);
fprintf(stderr,"%s: %s\n",PACKAGE,s);
bosh_log("fatal: %s\n",s);
#else
va_start(v,format);
vfprintf(stderr,format,v);
va_end(v);
#endif
exit(code);
}
/* fprintf which also logs */
void bosh_fprintfl(FILE *stream, char *logprefix, const char *format, ...) {
va_list v;
#ifdef LOG
char s[512];
va_start(v,format);
vsprintf(s,format,v);
va_end(v);
fprintf(stream,"%s",s);
bosh_log("%s %s",logprefix,s);
#else
va_start(v,format);
vfprintf(stream,format,v);
va_end(v);
#endif
}
/* logging */
#ifdef LOG
FILE *BOSHLOG = NULL;
void bosh_log_open(const char *mode) {
BOSHLOG = fopen("bosh.log",mode);
}
void bosh_log(char *format, ...) {
va_list v;
if(BOSHLOG) {
flock(fileno(BOSHLOG),LOCK_EX);
fseek(BOSHLOG,0,SEEK_END);
va_start(v,format);
vfprintf(BOSHLOG,format,v);
va_end(v);
fflush(BOSHLOG);
flock(fileno(BOSHLOG),LOCK_UN);
}
}
void bosh_log_stray(stray_t *a) {
if(BOSHLOG) {
flock(fileno(BOSHLOG),LOCK_EX);
fseek(BOSHLOG,0,SEEK_END);
stray_debug(a,BOSHLOG);
fflush(BOSHLOG);
flock(fileno(BOSHLOG),LOCK_UN);
}
}
#endif
/* regex */
regex_t *bosh_regex = NULL;
int bosh_regex_init(char *s) {
free(bosh_regex);
bosh_regex = malloc(sizeof(regex_t));
return regcomp(bosh_regex,s,REG_EXTENDED|REG_ICASE|REG_NOSUB);
}
int bosh_regex_try(char *s) {
return regexec(bosh_regex,s,0,0,0);
}
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