-/*
- * $Id: cfg.c,v 1.1.1.1 1999/11/21 08:16:12 lord Exp $
- *
- * Vadim Zaliva <lord@crocodile.org>
- * http://www.crocodile.org/
- *
- * Copyright (C) 1999 Vadim Zaliva
- *
- * 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 2 of the License, 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 "cfg.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <stdarg.h>
-
-#define MAXTOKENLEN 1024
-
-static int cfg_entry_cmp(const void *a,const void *b)
-{
- return(strcmp((*((struct Dict **)a))->name, (*((struct Dict **)b))->name));
-}
-
-static int cfg_entry_match(const void *a,const void *b)
-{
- return(strcmp((const char *)a, (*((struct Dict **)b))->name));
-}
-
-char *cfgfind(const char *name,struct Cfg *cfg, int offset)
-{
- int j;
- struct Dict **res;
-
- res=(struct Dict **)bsearch(name,
- cfg->dict,
- cfg->nelements,
- sizeof(struct Dict *),
- cfg_entry_match
- );
-
- if(!res)
- return NULL;
-
- if(offset>=(*res)->nvalues)
- return NULL;
-
- return (*res)->value[offset];
-}
-
-int writecfg(const char *name,struct Cfg *cfg)
-{
- FILE *f;
- int j;
- int i;
-
- if((f=fopen(name,"wb"))==NULL)
- return -1;
-
- if(cfg)
- {
- for(i=0;i<cfg->nelements;i++)
- {
- if(!cfg->dict[i]->name)
- continue;
- fprintf(f,"%s\t",cfg->dict[i]->name);
- for(j=0;j<cfg->dict[i]->nvalues;j++)
- if(cfg->dict[i]->value[j])
- fprintf(f," %s",cfg->dict[i]->value[j]); //TODO: quote values with spaces.
- fprintf(f,"\n");
- }
- }
- fclose(f);
- return 0;
-}
-
-void freecfg(struct Cfg *cfg)
-{
- int i,j;
-
- if(!cfg)
- return;
-
- for(i=0;i<cfg->nelements;i++)
- {
- if(cfg->dict[i]->value)
- {
- for(j=0;j<cfg->dict[i]->nvalues;j++)
- if(cfg->dict[i]->value[j])
- free(cfg->dict[i]->value[j]);
- free(cfg->dict[i]->value);
- }
-
- if(cfg->dict[i]->name)
- free(cfg->dict[i]->name);
- }
-
- free(cfg->dict);
- free(cfg);
-}
-
-struct Cfg *readcfg(const char *name)
-{
- struct Cfg *cfg;
- FILE *f;
- char tmp[MAXTOKENLEN];
- char *s;
- int c;
-
- enum
- {
- START,
- NAME,
- VALUE,
- INQUOTE,
- WHITESPACE,
- COMMENT
- } state=START;
-
- int n,i;
- char *pname,*pvalue;
-
- if((f=fopen(name,"rb"))==NULL)
- return NULL;
-
- cfg=malloc(sizeof(struct Cfg));
- cfg->nelements=0;
- s=tmp;
-
- while((c=fgetc(f))!=EOF)
- {
- /* Order of 'case' statements is important here! */
- switch(state)
- {
- case START:
- if(c=='#')
- {
- state=COMMENT;
- break;
- }
- else
- if(!isspace(c))
- {
- s=tmp;
- state=NAME;
- } else
- {
- break;
- }
-
- case NAME:
- if(isspace(c))
- {
- struct Dict *tmp1=malloc(sizeof(struct Dict));
- *s='\0';
- tmp1->nvalues = 0;
- tmp1->value = NULL;
- tmp1->name = strdup(tmp);
-
- cfg_add_entry(cfg, tmp1);
-
- state=WHITESPACE;
- }
- else
- {
- *s++=c;
- if(s==(tmp+sizeof(tmp)))
- {
- /* internal buffer overflow */
- freecfg(cfg);
- return NULL;
- }
- }
- break;
-
- case WHITESPACE:
- if(c=='\n')
- {
- state=START;
- break;
- }
- else
- {
- if(!isspace(c))
- {
- s=tmp;
- state=VALUE;
- } else
- {
- break;
- }
- }
-
- case VALUE:
- if(c=='"')
- state=INQUOTE;
- else
- if(isspace(c))
- {
- struct Dict *last=cfg->dict[cfg->nelements-1];
- char **tmp1;
- int i;
-
- *s='\0';
- tmp1=last->value;
- last->value=malloc((last->nvalues+1)*sizeof(char *));
- if(tmp1)
- {
- for(i=0;i<last->nvalues;i++)
- last->value[i]=tmp1[i];
- free(tmp1);
- }
- last->value[last->nvalues]=strdup(tmp);
- last->nvalues++;
- if(c=='\n')
- state=START;
- else
- state=WHITESPACE;
- } else
- {
- *s++=c;
- if(s==(tmp+sizeof(tmp)))
- {
- /* internal buffer overflow */
- freecfg(cfg);
- return NULL;
- }
- }
- break;
-
- case INQUOTE:
- if(c=='"')
- {
- state=VALUE;
- }
- else
- {
- *s++=c;
- if(s==(tmp+sizeof(tmp)))
- {
- /* internal buffer overflow */
- freecfg(cfg);
- return NULL;
- }
- }
- break;
-
- case COMMENT:
- if(c=='\n')
- state=START;
- break;
- }
- }
-
- sortcfg(cfg);
- return cfg;
-}
-
-/**
- * Sorts cfg.
- * Should be called after each modification
- * before attempting to retrieve any data.
- */
-void sortcfg (struct Cfg *cfg)
-{
- qsort((void *) cfg->dict,
- cfg->nelements,
- sizeof(struct Dict *),
- cfg_entry_cmp);
-
-}
-
-/**
- * Adds new cfg entry to the end of the dictionary.
- * you need to call sortcfg() before it could be
- * really used.
- */
-void cfg_add_entry (struct Cfg *cfg, struct Dict *d)
-{
- if(cfg->nelements)
- {
- struct Dict **last=cfg->dict;
- cfg->dict=malloc(sizeof(struct Dict *)*(cfg->nelements+1));
- memcpy(cfg->dict,last,sizeof(struct Dict *)*cfg->nelements);
- cfg->dict[cfg->nelements]=d;
- cfg->nelements++;
- free(last);
- }
- else
- {
- cfg->dict = malloc(sizeof(struct Dict *));
- cfg->dict[0] = d;
- cfg->nelements = 1;
- }
-}
-
-
-/**
- * Adds entry with given name and list of values.
- * list should be terminated with NULL and contain
- * only const char pointers.
- */
-void cfg_new_entry(struct Cfg *cfg, const char *name, ...)
-{
- int n;
- va_list ap;
- struct Dict *tmp=malloc(sizeof(struct Dict));
-
- tmp->name = strdup(name);
-
- va_start(ap,name);
- n=0;
- while(va_arg(ap, const char *)) n++;
- va_end(ap);
-
- tmp->nvalues = n;
- if(n)
- {
- int i;
-
- va_start(ap,name);
- tmp->value = malloc(n*sizeof(char *));
- for(i=0;i<n;i++)
- tmp->value[i] = strdup(va_arg(ap, const char *));
- va_end(ap);
- } else
- {
- tmp->value = NULL;
- }
-
- cfg_add_entry(cfg, tmp);
-}
-
-void cfg_new_ulong_entry (struct Cfg *cfg, const char *name, unsigned long v)
-{
- char tmp[80];
- sprintf(tmp,"%lu",v);
- cfg_new_entry(cfg, name, tmp, NULL);
-}
-
-/**
- * add long extended to 'w' chars, with added trailing zeros.
- *
- * @param v - field value
- * @param w - field width
- */
-void cfg_new_fmt_ulong_entry (struct Cfg *cfg, const char *name, unsigned long v, int w)
-{
- char tmp[80];
- sprintf(tmp,"%0*lu",w, v);
- cfg_new_entry(cfg, name, tmp, NULL);
-}
-
-struct Cfg *newcfg ()
-{
- struct Cfg *res=malloc(sizeof(struct Cfg));
- res->nelements = 0;
- return res;
-}
projects / icmpmonitor / blobdiff