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/*
$Id: cddb_regex.c,v 1.16 2007/08/07 03:12:53 jcaratzas Exp $
Copyright (C) 2003, 2004, 2005 Kris Verbeeck <airborne@advalvas.be>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "cddb/cddb_ni.h"
#ifdef HAVE_REGEX_H
#include <stdlib.h>
#include <string.h>
#include "cddb/cddb_regex.h"
regex_t *REGEX_TRACK_FRAME_OFFSETS = NULL;
regex_t *REGEX_TRACK_FRAME_OFFSET = NULL;
regex_t *REGEX_DISC_LENGTH = NULL;
regex_t *REGEX_DISC_REVISION = NULL;
regex_t *REGEX_DISC_TITLE = NULL;
regex_t *REGEX_DISC_YEAR = NULL;
regex_t *REGEX_DISC_GENRE = NULL;
regex_t *REGEX_DISC_EXT = NULL;
regex_t *REGEX_TRACK_TITLE = NULL;
regex_t *REGEX_TRACK_EXT = NULL;
regex_t *REGEX_PLAY_ORDER = NULL;
regex_t *REGEX_QUERY_MATCH = NULL;
regex_t *REGEX_SITE = NULL;
regex_t *REGEX_TEXT_SEARCH = NULL;
static int cddb_regex_init_1(regex_t **p, const char *regex)
{
if ((*p = (regex_t*)malloc(sizeof(regex_t))) == NULL) {
// XXX: check memory alloc
return -1;
}
return regcomp(*p, regex, REG_EXTENDED);
}
void cddb_regex_init()
{
int rv;
rv = cddb_regex_init_1(®EX_TRACK_FRAME_OFFSETS,
"^#[[:blank:]]*Track frame offsets:[[:blank:]]*$");
rv = cddb_regex_init_1(®EX_TRACK_FRAME_OFFSET,
"^#[[:blank:]]*([0-9]+)[[:blank:]]*$");
rv = cddb_regex_init_1(®EX_DISC_LENGTH,
"^#[[:blank:]]*Disc length:[[:blank:]]+([0-9]+)( seconds)*[[:blank:]]*$");
rv = cddb_regex_init_1(®EX_DISC_REVISION,
"^#[[:blank:]]*Revision:[[:blank:]]+([0-9]+)[[:blank:]]*$");
rv = cddb_regex_init_1(®EX_DISC_TITLE,
"^DTITLE=((.*) / (.*)|(.*))$");
rv = cddb_regex_init_1(®EX_DISC_YEAR,
"^DYEAR=([0-9]*)$");
rv = cddb_regex_init_1(®EX_DISC_GENRE,
"^DGENRE=(.*)$");
rv = cddb_regex_init_1(®EX_DISC_EXT,
"^EXTD=(.*)$");
rv = cddb_regex_init_1(®EX_TRACK_TITLE,
"^TTITLE([0-9]+)=((.*) / (.*)|(.*))$");
rv = cddb_regex_init_1(®EX_TRACK_EXT,
"^EXTT([0-9]+)=(.*)$");
rv = cddb_regex_init_1(®EX_PLAY_ORDER,
"^PLAYORDER=(.*)$");
rv = cddb_regex_init_1(®EX_QUERY_MATCH,
"^([[:alpha:]]+)[[:blank:]]([[:xdigit:]]+)[[:blank:]]((.*) / (.*)|(.*))$");
/* example: freedb.freedb.org cddbp 8880 - N000.00 W000.00 Random freedb server */
/* <server> <proto> <port> <query-url> <latitude> <longitude> <description> */
rv = cddb_regex_init_1(®EX_SITE,
"^([[:graph:]]+)[[:blank:]]([[:alpha:]]+)[[:blank:]]([[:digit:]]+)[[:blank:]]([[:graph:]]+)[[:blank:]]([NS])([0-9.]+)[[:blank:]]([EW])([0-9.]+)[[:blank:]](.*)$");
/* example: ...<a href="http://www.freedb.org/freedb_search_fmt.php?cat=rock&id=8e0eee0b">Massive Attack / Mezzanine</a>... */
/* ...<a href="http://www.freedb.org/freedb_search_fmt.php?cat=soundtrack&id=b30ed30b"><font size=-1>3</font></a>... */
/* <1:greedy_remains> <2:category> <3:discid> <6:artist> <7:title> <8:artist_title> <10:duplicate_number> */
rv = cddb_regex_init_1(®EX_TEXT_SEARCH,
"^(.*)/freedb_search_fmt\\.php\\?cat=([[:alpha:]]+)&id=([[:xdigit:]]+)\">"
"((([^<]+) / ([^<]+))|([^<]+)|([^>]*>([[:digit:]]+)<.*))</a>.*$");
}
static inline void cddb_regfree(regex_t *regex)
{
if (regex) {
regfree(regex);
free(regex);
regex = NULL;
}
}
void cddb_regex_destroy()
{
cddb_regfree(REGEX_TRACK_FRAME_OFFSETS);
cddb_regfree(REGEX_TRACK_FRAME_OFFSET);
cddb_regfree(REGEX_DISC_LENGTH);
cddb_regfree(REGEX_DISC_REVISION);
cddb_regfree(REGEX_DISC_TITLE);
cddb_regfree(REGEX_DISC_YEAR);
cddb_regfree(REGEX_DISC_GENRE);
cddb_regfree(REGEX_DISC_EXT);
cddb_regfree(REGEX_TRACK_TITLE);
cddb_regfree(REGEX_TRACK_EXT);
cddb_regfree(REGEX_PLAY_ORDER);
cddb_regfree(REGEX_QUERY_MATCH);
cddb_regfree(REGEX_SITE);
cddb_regfree(REGEX_TEXT_SEARCH);
}
int cddb_regex_get_int(const char *s, regmatch_t matches[], int idx)
{
char *buf;
int i;
buf = cddb_regex_get_string(s, matches, idx);
i = atoi(buf);
free(buf);
return i;
}
unsigned long cddb_regex_get_hex(const char *s, regmatch_t matches[], int idx)
{
char *buf, *endp;
long long h;
buf = cddb_regex_get_string(s, matches, idx);
h = strtoll(buf, &endp, 16);
free(buf);
return (unsigned long)(h & 0xffffffff);
}
double cddb_regex_get_float(const char *s, regmatch_t matches[], int idx)
{
char *buf;
double f;
buf = cddb_regex_get_string(s, matches, idx);
f = atof(buf);
free(buf);
return f;
}
char *cddb_regex_get_string(const char *s, regmatch_t matches[], int idx)
{
char *result;
int start, end, len;
start = matches[idx].rm_so;
end = matches[idx].rm_eo;
len = end - start;
result = malloc(len + 1);
strncpy(result, s + start, len);
result[len] = '\0';
return result;
}
#endif /*HAVE_REGEX_H*/
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