wmfs/src/confparse/confparse.c
2010-04-11 17:54:33 +02:00

288 lines
7.3 KiB
C

/*
* confparse.c
* Copyright © 2008, 2009 Martin Duquesnoy <xorg62@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of the nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "confparse.h"
char*
file_to_str(char *path)
{
char *buf, *ret, *p, *c;
int fd, i;
struct stat st;
Bool is_char = False;
if (!path)
return NULL;
if (!(fd = open(path, O_RDONLY)))
{
warn("%s", path);
return NULL;
}
/* Get the file size */
stat(path, &st);
/* Bufferize file */
if((buf = (char*)mmap(0, st.st_size, PROT_READ, MAP_PRIVATE, fd, SEEK_SET)) == (char*) MAP_FAILED)
return NULL;
/* Copy buffer without comments in return value */
ret = emalloc(strlen(buf) + 1, sizeof(char));
for(p = buf, i = 0; *p != '\0'; p++)
{
if(!is_char && (c = strchr("\"'", *p)))
is_char = !is_char;
else if (is_char && *p == *c)
is_char = !is_char;
if(*p == COMMENT_CHAR && !is_char)
{
if(!(p = strchr(p, '\n')))
break;
ret[i++] = '\n';
}
else
ret[i++] = *p;
}
ret[i++] = '\0';
/* Unmap buffer, thanks linkdd. */
munmap(buf, st.st_size);
close(fd);
warnx("%s read.", path);
return ret;
}
char*
get_sec(char *src, char *name)
{
char *ret = NULL, *start, *end, *p;
char **sec;
size_t len;
if(!src)
return NULL;
if(!name)
return src;
sec = secname(name);
len = strlen(sec[SecStart]);
/* Find start section pointer */
for(start = src; *start != '\0'; start++)
{
if( (p = strchr("\"'", *start)) )
while (*(++start) && *start != *p);
if(!strncmp(start, sec[SecStart], len))
break;
}
if(*start != '\0')
{
/* Here is_char == False */
start += len;
/* Find end section pointer */
for(end = start; *end != '\0'; end++)
{
if( (p = strchr("\"'", *start)) )
while (*(++start) && *start != *p);
if(!strncmp(end, sec[SecEnd], len+1))
break;
}
/* Allocate and set ret */
if(end != '\0')
{
len = end - start;
ret = emalloc(len + 1, sizeof(char));
memcpy(ret, start, len);
ret[len] = '\0';
}
}
free_secname(sec);
return ret;
}
char*
get_nsec(char *src, char *name, int n)
{
int i;
char *ret, *buf, **sec;
if(!src || !strlen(src))
return NULL;
if(!name)
return src;
if(!n)
return get_sec(src, name);
sec = secname(name);
for(i = 0, buf = sauv_delimc; i < n && (buf = strstr(buf, sec[SecStart])); ++i, buf += strlen(sec[SecStart]));
ret = get_sec(src + strlen(src) - strlen(buf), name);
free_secname(sec);
return ret;
}
int
get_size_sec(char *src, char *name)
{
int ret;
char **sec, *buf;
if(!src || !name)
return 0;
sec = secname(name);
for(ret = 0, buf = sauv_secc; (buf = strstr(buf, sec[SecStart])); ++ret, buf += strlen(sec[SecStart]));
free_secname(sec);
return ret;
}
opt_type
get_opt(char *src, char *def, char *name)
{
int i;
char *p = NULL, *p2 = NULL;
opt_type ret = null_opt_type;
if(!src || !name)
return (def) ? str_to_opt(def) : ret;
if((p = opt_srch(sauv_secc, name)))
{
for(i = 0; p[i] && p[i] != '\n'; ++i);
p[i] = '\0';
p2 = _strdup(p + strlen(name));
if((p = strchr(p, '=')) && !is_in_delimiter(p, 0))
{
for(i = 0; p2[i] && p2[i] != '='; ++i);
p2[i] = '\0';
/* Check if there is anything else that spaces
* between option name and '=' */
for(i = 0; i < strlen(p2); ++i)
if(p2[i] != ' ')
{
warnx("Configuration warning: Missing '=' after option: '%s'"
" and before expression: '%s'\n", name, p2);
return str_to_opt(def);
}
ret = str_to_opt(clean_value(++p));
}
free(p2);
}
if(!ret.str)
ret = str_to_opt(def);
return ret;
}
/* option = {val1, val2, val3} */
opt_type*
get_list_opt(char *src, char *def, char *name, int *n)
{
int i, j;
char *p, *p2, *p2_orig;
opt_type *ret;
if(!src || !name)
return NULL;
*n = 0;
if(!(p = get_opt(src, def, name).str))
return NULL;
for(i = 0; p[i] && (p[i] != LIST_DEL_E || is_in_delimiter(p, i)); ++i);
p[i + 1] = '\0';
/* Syntax of list {val1, val2, ..., valx} */
if(*p != LIST_DEL_S || *(p + strlen(p) - 1) != LIST_DEL_E)
return NULL;
/* Erase ( ) */
++p;
*(p + strlen(p) - 1) = '\0';
/* > 1 value in list */
if(strchr(p, ','))
{
/* Count ',' */
for(i = 0, *n = 1; i < strlen(p); ++i)
if(p[i] == ',' && !is_in_delimiter(p, i))
++(*n);
ret = emalloc(*n, sizeof(opt_type));
p2_orig = p2 = _strdup(p);
/* Set all value in return array */
for(i = j = 0; i < *n; ++i, p2 += ++j)
{
for(j = 0; j < strlen(p2) && (p2[j] != ',' || is_in_delimiter(p2, j)); ++j);
p2[j] = '\0';
ret[i] = str_to_opt(clean_value(p2));
}
free(p2_orig);
}
else
{
ret = emalloc((*n = 1), sizeof(opt_type));
*ret = str_to_opt(clean_value(p));
}
return ret;
}