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/*
* $Id$
*
* Based on mpc's songToFormatedString modified for glib and ncmpc
*
*
* (c) 2003-2004 by normalperson and Warren Dukes (shank@mercury.chem.pitt.edu)
* and Daniel Brown (danb@cs.utexas.edu)
* and Kalle Wallin (kaw@linux.se)
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <glib.h>
#include "config.h"
#include "libmpdclient.h"
#include "support.h"
#include "strfsong.h"
static gchar *
skip(gchar * p)
{
gint stack = 0;
while (*p != '\0') {
if(*p == '[') stack++;
if(*p == '#' && p[1] != '\0') {
/* skip escaped stuff */
++p;
}
else if(stack) {
if(*p == ']') stack--;
}
else {
if(*p == '&' || *p == '|' || *p == ']') {
break;
}
}
++p;
}
return p;
}
static gsize
_strfsong(gchar *s,
gsize max,
const gchar *format,
mpd_Song *song,
gchar **last)
{
gchar *p, *end;
gchar *temp;
gsize n, length = 0;
gboolean found = FALSE;
memset(s, 0, max);
if( song==NULL )
return 0;
for( p=(gchar *) format; *p != '\0' && length<max; )
{
/* OR */
if (p[0] == '|')
{
++p;
if(!found)
{
memset(s, 0, max);
length = 0;
}
else
{
p = skip(p);
}
continue;
}
/* AND */
if (p[0] == '&')
{
++p;
if(!found)
{
p = skip(p);
}
else
{
found = FALSE;
}
continue;
}
/* EXPRESSION START */
if (p[0] == '[')
{
temp = g_malloc0(max);
if( _strfsong(temp, max, p+1, song, &p) >0 )
{
g_strlcat(s, temp, max);
length = strlen(s);
found = TRUE;
}
g_free(temp);
continue;
}
/* EXPRESSION END */
if (p[0] == ']')
{
if(last) *last = p+1;
if(!found && length)
{
memset(s, 0, max);
length = 0;
}
return length;
}
/* pass-through non-escaped portions of the format string */
if (p[0] != '#' && p[0] != '%' && length<max)
{
s[length++] = *p;
p++;
continue;
}
/* let the escape character escape itself */
if (p[0] == '#' && p[1] != '\0' && length<max)
{
s[length++] = *(p+1);
p+=2;
continue;
}
/* advance past the esc character */
/* find the extent of this format specifier (stop at \0, ' ', or esc) */
temp = NULL;
end = p+1;
while(*end >= 'a' && *end <= 'z')
{
end++;
}
n = end - p + 1;
if(*end != '%')
n--;
else if (strncmp("%file%", p, n) == 0)
temp = utf8_to_locale(song->file);
else if (strncmp("%artist%", p, n) == 0)
temp = song->artist ? utf8_to_locale(song->artist) : NULL;
else if (strncmp("%title%", p, n) == 0)
temp = song->title ? utf8_to_locale(song->title) : NULL;
else if (strncmp("%album%", p, n) == 0)
temp = song->album ? utf8_to_locale(song->album) : NULL;
else if (strncmp("%track%", p, n) == 0)
temp = song->track ? utf8_to_locale(song->track) : NULL;
else if (strncmp("%name%", p, n) == 0)
temp = song->name ? utf8_to_locale(song->name) : NULL;
else if (strncmp("%shortfile%", p, n) == 0)
{
if( strstr(song->file, "://") )
temp = utf8_to_locale(song->file);
else
temp = utf8_to_locale(basename(song->file));
}
else if (strncmp("%time%", p, n) == 0)
{
if (song->time != MPD_SONG_NO_TIME)
temp = g_strdup_printf("%d:%02d",
song->time / 60,
song->time % 60 + 1);
}
if( temp == NULL)
{
gsize templen=n;
/* just pass-through any unknown specifiers (including esc) */
/* drop a null char in so printf stops at the end of this specifier,
but put the real character back in (pseudo-const) */
if( length+templen > max )
templen = max-length;
g_strlcat(s, p,max);
length+=templen;
}
else {
gsize templen = strlen(temp);
found = TRUE;
if( length+templen > max )
templen = max-length;
g_strlcat(s, temp, max);
length+=templen;
g_free(temp);
}
/* advance past the specifier */
p += n;
}
if(last) *last = p;
return length;
}
gsize
strfsong(gchar *s, gsize max, const gchar *format, mpd_Song *song)
{
return _strfsong(s, max, format, song, NULL);
}
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