static sound_file *check_write_date(const char *name, sound_file *sf)
{
if (sf)
{
time_t date;
date = local_file_write_date(name);
if (date == sf->write_date)
return(sf);
if ((sf->header_type == MUS_RAW) && (mus_header_no_header(name)))
{
int chan;
mus_long_t data_size;
/* sound has changed since we last read it, but it has no header, so
* the only sensible thing to check is the new length (i.e. caller
* has set other fields by hand)
*/
sf->write_date = date;
chan = mus_file_open_read(name);
data_size = lseek(chan, 0L, SEEK_END);
sf->true_file_length = data_size;
sf->samples = mus_bytes_to_samples(sf->data_format, data_size);
CLOSE(chan, name);
return(sf);
}
/* otherwise our data base is out-of-date, so clear it out */
free_sound_file(sf);
}
return(NULL);
}
int mus_sound_prune(void)
{
int i, pruned = 0;
for (i = 0; i < sound_table_size; i++)
if ((sound_table[i]) &&
(!(mus_file_probe(sound_table[i]->file_name))))
{
free_sound_file(sound_table[i]);
sound_table[i] = NULL;
pruned++;
}
return(pruned);
}
int mus_sound_forget(const char *name)
{
int i, len, len2, short_len = 0;
bool free_name = false;
char *short_name = NULL;
if (name == NULL) return(MUS_ERROR);
len = strlen(name);
if (len > 6)
len2 = len - 6;
else len2 = len / 2;
if (name[0] == '/')
{
for (i = 0; i < len; i++)
if (name[i] == '/')
short_name = (char *)(name + i + 1);
}
else
{
short_name = mus_expand_filename(name);
free_name = true;
}
if (short_name)
short_len = strlen(short_name);
if (name)
{
for (i = 0; i < sound_table_size; i++)
if ((sound_table[i]) &&
(((sound_table[i]->file_name_length == len) &&
(sound_table[i]->file_name[len2] == name[len2]) &&
(strcmp(name, sound_table[i]->file_name) == 0)) ||
((short_name) &&
(sound_table[i]->file_name_length == short_len) &&
(strcmp(short_name, sound_table[i]->file_name) == 0))))
{
free_sound_file(sound_table[i]);
sound_table[i] = NULL;
}
}
if (free_name) free(short_name);
return(MUS_NO_ERROR);
}
int mus_sound_prune(void)
{
int j, pruned = 0;
for (j = 0; j < NUM_SOUND_TABLES; j++)
{
int i, sound_table_size;
sound_file **sound_table;
sound_table = sound_tables[j];
sound_table_size = sound_table_sizes[j];
for (i = 0; i < sound_table_size; i++)
if ((sound_table[i]) &&
(!(mus_file_probe(sound_table[i]->file_name))))
{
free_sound_file(sound_table[i]);
sound_table[i] = NULL;
pruned++;
}
}
return(pruned);
}
int mus_sound_forget(const char *name)
{
/* apparently here we want to forget either name or the expanded or contracted forms of name -- as many as we find! */
int i, len, len2, short_len = 0;
bool free_name = false;
char *short_name = NULL;
sound_file **sound_table;
int sound_table_size, index;
char c;
if (name == NULL) return(MUS_ERROR);
len = strlen(name);
if (len > 6)
len2 = len - 6;
else len2 = len / 2;
c = name[len2];
if (name[0] == '/')
{
for (i = 0; i < len; i++)
if (name[i] == '/')
short_name = (char *)(name + i + 1);
}
else
{
short_name = mus_expand_filename(name);
free_name = true;
}
if (short_name)
short_len = strlen(short_name);
index = sound_file_hash_index(name, len);
sound_table = sound_tables[index];
sound_table_size = sound_table_sizes[index];
for (i = 0; i < sound_table_size; i++)
if ((sound_table[i]) &&
(sound_table[i]->file_name_length == len) &&
(sound_table[i]->file_name[len2] == c) &&
(mus_strcmp(name, sound_table[i]->file_name)))
{
free_sound_file(sound_table[i]);
sound_table[i] = NULL;
}
if (short_name)
{
if (short_len > 6)
len2 = short_len - 6;
else len2 = short_len / 2;
c = short_name[len2];
index = sound_file_hash_index(short_name, short_len);
sound_table = sound_tables[index];
sound_table_size = sound_table_sizes[index];
for (i = 0; i < sound_table_size; i++)
if ((sound_table[i]) &&
(sound_table[i]->file_name_length == short_len) &&
(sound_table[i]->file_name[len2] == c) &&
(mus_strcmp(short_name, sound_table[i]->file_name)))
{
free_sound_file(sound_table[i]);
sound_table[i] = NULL;
}
}
if (free_name) free(short_name);
return(MUS_NO_ERROR);
}