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/* database.c
*
* Copyright 1994 thomas insel
*
* 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; version 2 dated June, 1991.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <stdio.h>
#include <string.h>
#include <pwd.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
#include "database.h"
#include "util.h"
/* chomp(): conceptually similar to the Perl function of that name.
* Removes any number of CR or NL chars from the end of a string.
*/
static char *chomp(char *c)
{
int l=strlen(c)-1;
while (l>=0 && (c[l]=='\n' || c[l]=='\r'))
c[l--]='\0';
return c;
}
/************************************************************************/
/* Procedure: read_db
* Purpose: to read database info for this CD-ROM
*
* Inputs: tracks info, database
* Outputs: to cd_t
* Returns: pointer to cd_t structure
* Notes:
* 1.
*/
/************************************************************************/
cd_t *
read_db(char *tracks_buffer, char usedb) {
/* given "tracks" line in tracks_buffer, search databases for a
* corresponding entry, return cdname/artist/tracks information
*
* if the disc is listed more than once, this routine will return
* the last entry for the disc from the first file that has any
* entry for it.
*/
char *path_env = getenv("CDTOOLDBPATH");
char *path_bit;
int dbpath_count=1, cur_file=0, found_it=0;
struct passwd *prec = getpwuid(getuid());
cd_t *temp_cd = (cd_t *)calloc(1,sizeof(cd_t));
char dbpath[10][255];
if (!usedb) {
/* free ((void *)temp_cd); * can't free this, we're returning it */
return temp_cd;
}
/* first, put default file in search path */
strcpy(dbpath[0], prec->pw_dir);
strcat(dbpath[0], "/.cdtooldb");
/* read search path from environment */
if (path_env != NULL)
while (dbpath_count < 9 &&
(path_bit = strsep(&path_env, ":\0")) != NULL)
strcpy(dbpath[dbpath_count++], path_bit);
/* check files in search path until the disc's entry is found */
while (!found_it && cur_file < dbpath_count) {
char read_buffer[2048];
int cur_track=0, printing=0;
FILE *fred = fopen(dbpath[cur_file], "r");
cur_file++;
while (fred != NULL && !feof(fred) ) {
fgets(read_buffer, 2048, fred);
if (strncmp(read_buffer, tracks_buffer,
strlen(tracks_buffer)) == 0) {
printing = 1;
found_it = 1;
} else if (strncmp(read_buffer, "tracks ", 7) == 0) {
printing = 0;
} else if (printing) {
if (strncmp(read_buffer,"track ",6) == 0)
strncpy(temp_cd->track_names[cur_track++],
&read_buffer[6],99);
else if (strncmp(read_buffer,"cdname ",7) == 0)
strncpy(temp_cd->cdname, &read_buffer[7],99);
else if (strncmp(read_buffer,"artist ",7) == 0)
strncpy(temp_cd->artist, &read_buffer[7],99);
}
}
if (fred) {
fclose(fred);
chomp(temp_cd->cdname);
chomp(temp_cd->artist);
while(cur_track--)
chomp(temp_cd->track_names[cur_track]);
}
else
{
int i;
temp_cd->cdname[0] = '\0';
temp_cd->artist[0] = '\0';
for (i=0 ; i<100 ; i++ )
temp_cd->track_names[i][0] = '\0';
}
} /*while*/
return temp_cd;
}
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