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/*****************************************************************
parsecfg.c -- routines for parsing a key-based config file
Copyright (c) 1999 by Mike Oliphant - oliphant@gtk.org
http://www.ling.ed.ac.uk/~oliphant
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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*****************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <glib.h>
#include "parsecfg.h"
static gboolean ParseLine(char *buf,CFGEntry *cfg);
static char *ChopWhite(char *buf);
/* Get rid of whitespace at the beginning or end of a string */
static char *ChopWhite(char *buf)
{
int pos;
for(pos=strlen(buf)-1;(pos>=0)&&isspace(buf[pos]);pos--);
buf[pos+1]='\0';
for(;isspace(*buf);buf++);
return buf;
}
static gboolean ParseLine(char *buf,CFGEntry *cfg)
{
int cfgent;
gboolean found=FALSE;
char *tok;
tok=strtok(buf," ");
if(tok)
for(cfgent=0;cfg[cfgent].type!=CFG_ENTRY_LAST;cfgent++) {
if(!strcasecmp(tok,cfg[cfgent].name)) {
tok=strtok(NULL,"");
if(tok)
switch(cfg[cfgent].type) {
case CFG_ENTRY_STRING:
strncpy((char *)cfg[cfgent].destvar,
ChopWhite(tok),cfg[cfgent].length);
break;
case CFG_ENTRY_BOOL:
*((gboolean *)cfg[cfgent].destvar)=(atoi(tok)==1);
break;
case CFG_ENTRY_INT:
*((int *)cfg[cfgent].destvar)=atoi(tok);
break;
default:
printf("Error: Bad entry type\n");
break;
}
found=TRUE;
break;
}
}
/* if(!found) printf("Error: Unrecognized line: %s\n",buf);*/
return found;
}
gboolean LoadConfig(char *filename,char *name,int ver,int reqver,CFGEntry *cfg)
{
char buf[1024];
FILE *cfp;
char *tok;
cfp=fopen(filename,"r");
if(!cfp) return FALSE;
fgets(buf,1024,cfp);
tok=strtok(buf," ");
if(!tok||(strcasecmp(tok,name))) {
printf("Error: Invalid config file\n");
return FALSE;
}
tok=strtok(NULL,"");
if(!tok||(atoi(tok)<reqver)) {
printf("Error: Config file out of date\n");
return FALSE;
}
while(fgets(buf,1024,cfp)) {
ParseLine(buf,cfg);
}
fclose(cfp);
return TRUE;
}
gboolean SaveConfig(char *filename,char *name,int ver,CFGEntry *cfg)
{
FILE *cfp;
int cfgent;
cfp=fopen(filename,"w");
if(!cfp) return FALSE;
fprintf(cfp,"%s %d\n",name,ver);
for(cfgent=0;cfg[cfgent].type!=CFG_ENTRY_LAST;cfgent++) {
fprintf(cfp,"%s ",cfg[cfgent].name);
switch(cfg[cfgent].type) {
case CFG_ENTRY_STRING:
fprintf(cfp,"%s\n",(char *)cfg[cfgent].destvar);
break;
case CFG_ENTRY_INT:
fprintf(cfp,"%d\n",*((int *)cfg[cfgent].destvar));
break;
case CFG_ENTRY_BOOL:
fprintf(cfp,"%d\n",*((int *)cfg[cfgent].destvar)==1);
break;
default:
break;
}
}
fclose(cfp);
return TRUE;
}
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