wmfs/src/parse_api.c

/*
 * Copyright (c) 2010 Philippe Pepiot <phil@philpep.org>
 * Copyright (c) 2011 Martin Duquesnoy <xorg62@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
#include <string.h>
#include <stdlib.h>
#include <err.h>

#include "wmfs.h"
#include "parse.h"
#include "util.h"

extern TAILQ_HEAD(, conf_sec) config;

static const struct opt_type opt_type_null = { 0, 0, false, NULL };

static struct opt_type
string_to_opt(char *s)
{
     struct opt_type ret = opt_type_null;

     if(!s || !strlen(s))
          return ret;

     ret.num = strtol(s, (char**)NULL, 10);
     ret.fnum = strtod(s, NULL);

     ret.boolean = (!strcmp(s, "true")
                   || !strcmp(s, "True")
                   || !strcmp(s, "TRUE")
                   || !strcmp(s, "1"));

     ret.str = s;

     return ret;
}


void
print_unused(struct conf_sec *sec)
{
     struct conf_sec *s;
     struct conf_opt *o;

     if(!sec)
     {
          TAILQ_FOREACH(s, &config, entry)
               print_unused(s);
          return;
     }

     SLIST_FOREACH(o, &sec->optlist, entry)
          if(!o->used)
               warnxl("%s:%d, unused param %s", o->filename, o->line, o->name);

     TAILQ_FOREACH(s, &sec->sub, entry)
          if(!TAILQ_EMPTY(&s->sub))
               print_unused(s);
}

struct conf_sec **
fetch_section(struct conf_sec *s, char *name)
{
     struct conf_sec **ret;
     struct conf_sec *sec;
     size_t i = 0;

     if(!name)
          return NULL;

     if(!s)
     {
          ret = xcalloc(2, sizeof(struct conf_sec *));

          TAILQ_FOREACH(sec, &config, entry)
               if(!strcmp(sec->name, name))
               {
                    ret[0] = sec;
                    ret[1] = NULL;
                    break;
               }
     }
     else
     {
          ret = xcalloc(s->nsub + 1, sizeof(struct conf_sec *));

          TAILQ_FOREACH(sec, &s->sub, entry)
               if(!strcmp(sec->name, name) && i < s->nsub)
                    ret[i++] = sec;

          ret[i] = NULL;
     }

     return ret;
}

struct conf_sec *
fetch_section_first(struct conf_sec *s, char *name)
{
     struct conf_sec *sec, *ret = NULL;
     TAILQ_HEAD(cshead, conf_sec) *head =
          (s
           ? (struct cshead*)&s->sub
           : (struct cshead*)&config);

     if(!name)
          return NULL;

     TAILQ_FOREACH(sec, head, entry)
          if(sec->name && !strcmp(sec->name, name))
          {
               ret = sec;
               break;
          }

     return ret;
}

size_t
fetch_section_count(struct conf_sec **s)
{
     size_t ret = 0;

     while(s[ret])
          ++ret;

     return ret;
}

struct opt_type *
fetch_opt(struct conf_sec *s, char *dfl, char *name)
{
     struct conf_opt *o;
     struct opt_type *ret;
     size_t i = 0;

     if(!name)
          return NULL;

     ret = xcalloc(10, sizeof(struct opt_type));

     if(s)
     {
          SLIST_FOREACH(o, &s->optlist, entry)
               if(!strcmp(o->name, name))
               {
                    while(o->val[i])
                    {
                         o->used = true;
                         ret[i] = string_to_opt(o->val[i]);
                         ++i;
                    }

                    ret[i] = opt_type_null;

                    return ret;
               }
     }

     ret[0] = string_to_opt(dfl);
     ret[1] = opt_type_null;

     return ret;
}

struct opt_type
fetch_opt_first(struct conf_sec *s, char *dfl, char *name)
{
     struct conf_opt *o;

     if(!name)
          return opt_type_null;
     else if(s)
     {
          SLIST_FOREACH(o, &s->optlist, entry)
               if(!strcmp(o->name, name))
               {
                    o->used = true;

                    return string_to_opt(o->val[0]);
               }
     }

     return string_to_opt(dfl);
}

size_t
fetch_opt_count(struct opt_type *o)
{
     size_t ret = 0;

     while(o[ret].str)
          ++ret;

     return ret;
}