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Improved cuesheet parser. Among other improvements, the use of quotation marks around strings in cuesheet files is now optional.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12949 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Nicolas Pennequin 2007-03-28 19:43:03 +00:00
parent 538126cb34
commit 10e9dc617a
1 changed files with 58 additions and 52 deletions
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110
apps/cuesheet.c
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@ -94,11 +94,33 @@ static char *skip_whitespace(char* buf)
return r;
}
static char *get_string(const char *line)
{
char *start, *end;
start = strchr(line, '"');
if (!start)
{
start = strchr(line, ' ');
if (!start)
return NULL;
}
end = strchr(++start, '"');
if (end)
*end = '\0';
return start;
}
/* parse cuesheet "file" and store the information in "cue" */
bool parse_cuesheet(char *file, struct cuesheet *cue)
{
char line[MAX_PATH];
char *s, *start, *end;
char *s;
int fd = open(file,O_RDONLY);
if (fd < 0)
{
@ -106,62 +128,17 @@ bool parse_cuesheet(char *file, struct cuesheet *cue)
return false;
}
/* Initialization */
memset(cue, 0, sizeof(struct cuesheet));
strcpy(cue->path, file);
cue->curr_track_idx = 0;
cue->curr_track = cue->tracks;
cue->track_count = 0;
while (read_line(fd,line,MAX_PATH))
while ( read_line(fd,line,MAX_PATH) && cue->track_count < MAX_TRACKS )
{
s = skip_whitespace(line);
if (!strncmp(s, "TITLE", 5))
if (!strncmp(s, "TRACK", 5))
{
start = strchr(s,'"');
if (!start)
break;
end = strchr(++start,'"');
if (!end)
break;
*end = '\0';
if (cue->track_count <= 0)
strncpy(cue->title,start,MAX_NAME);
else strncpy(cue->tracks[cue->track_count-1].title,
start,MAX_NAME);
}
else if (!strncmp(s, "PERFORMER", 9))
{
start = strchr(s,'"');
if (!start)
break;
end = strchr(++start,'"');
if (!end)
break;
*end = '\0';
if (cue->track_count <= 0)
strncpy(cue->performer,start,MAX_NAME);
else strncpy(cue->tracks[cue->track_count-1].performer,
start,MAX_NAME);
}
else if (!strncmp(s, "SONGWRITER", 10))
{
start = strchr(s,'"');
if (!start)
break;
end = strchr(++start,'"');
if (!end)
break;
*end = '\0';
if (cue->track_count > 0)
strncpy(cue->tracks[cue->track_count-1].songwriter,
start, MAX_NAME);
}
else if (!strncmp(s, "TRACK", 5))
{
if (cue->track_count >= MAX_TRACKS)
break; /* out of memeory! stop parsing */
cue->track_count++;
}
else if (!strncmp(s, "INDEX 01", 8))
@ -176,6 +153,37 @@ bool parse_cuesheet(char *file, struct cuesheet *cue)
s = strchr(s,':') + 1;
cue->tracks[cue->track_count-1].offset += 13 * atoi(s);
}
else if (!strncmp(s, "TITLE", 5)
|| !strncmp(s, "PERFORMER", 9)
|| !strncmp(s, "SONGWRITER", 10))
{
char *dest;
char *string;
string = get_string(s);
if (!string)
break;
switch (*s)
{
case 'T': /* TITLE */
dest = (cue->track_count <= 0) ? cue->title :
cue->tracks[cue->track_count-1].title;
break;
case 'P': /* PERFORMER */
dest = (cue->track_count <= 0) ? cue->performer :
cue->tracks[cue->track_count-1].performer;
break;
case 'S': /* SONGWRITER */
dest = (cue->track_count <= 0) ? NULL :
cue->tracks[cue->track_count-1].songwriter;
}
if (dest)
strncpy(dest, string, MAX_NAME);
}
}
close(fd);
@ -184,9 +192,7 @@ bool parse_cuesheet(char *file, struct cuesheet *cue)
for (i = 0; i < cue->track_count; i++)
{
if (*(cue->tracks[i].performer) == '\0')
{
strncpy(cue->tracks[i].performer, cue->performer, MAX_NAME);
}
}
return true;