FLAC__bool flac__vorbiscomment_add(FLAC__StreamMetadata *block, const char *comment, FLAC__bool value_from_file, const char **violation)
{
Argument_VcField parsed;
FLAC__bool dummy;
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__ASSERT(0 != comment);
memset(&parsed, 0, sizeof(parsed));
parsed.field_value_from_file = value_from_file;
if(!parse_vorbis_comment_field(comment, &(parsed.field), &(parsed.field_name), &(parsed.field_value), &(parsed.field_value_length), violation)) {
free_field(&parsed);
return false;
}
if(!set_vc_field(block, &parsed, &dummy, /*raw=*/false, violation)) {
free_field(&parsed);
return false;
}
else {
free_field(&parsed);
return true;
}
}
FLAC__bool import_vc_from(const char *filename, FLAC__StreamMetadata *block, const Argument_String *vc_filename, FLAC__bool *needs_write, FLAC__bool raw)
{
FILE *f;
char line[65536];
FLAC__bool ret;
if(0 == vc_filename->value || strlen(vc_filename->value) == 0) {
fprintf(stderr, "%s: ERROR: empty import file name\n", filename);
return false;
}
if(0 == strcmp(vc_filename->value, "-"))
f = stdin;
else
f = fopen(vc_filename->value, "r");
if(0 == f) {
fprintf(stderr, "%s: ERROR: can't open import file %s: %s\n", filename, vc_filename->value, strerror(errno));
return false;
}
ret = true;
while(ret && !feof(f)) {
fgets(line, sizeof(line), f);
if(!feof(f)) {
char *p = strchr(line, '\n');
if(0 == p) {
fprintf(stderr, "%s: ERROR: line too long, aborting\n", vc_filename->value);
ret = false;
}
else {
const char *violation;
Argument_VcField field;
*p = '\0';
memset(&field, 0, sizeof(Argument_VcField));
field.field_value_from_file = false;
if(!parse_vorbis_comment_field(line, &field.field, &field.field_name, &field.field_value, &field.field_value_length, &violation)) {
FLAC__ASSERT(0 != violation);
fprintf(stderr, "%s: ERROR: malformed vorbis comment field \"%s\",\n %s\n", vc_filename->value, line, violation);
ret = false;
}
else {
ret = set_vc_field(filename, block, &field, needs_write, raw);
}
if(0 != field.field)
free(field.field);
if(0 != field.field_name)
free(field.field_name);
if(0 != field.field_value)
free(field.field_value);
}
}
};
if(f != stdin)
fclose(f);
return ret;
}
FLAC__bool do_shorthand_operation__vorbis_comment(const char *filename, FLAC__bool prefix_with_filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write, FLAC__bool raw)
{
FLAC__bool ok = true, found_vc_block = false;
FLAC__StreamMetadata *block = 0;
FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
if(0 == iterator)
die("out of memory allocating iterator");
FLAC__metadata_iterator_init(iterator, chain);
do {
block = FLAC__metadata_iterator_get_block(iterator);
if(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
found_vc_block = true;
} while(!found_vc_block && FLAC__metadata_iterator_next(iterator));
if(!found_vc_block) {
/* create a new block if necessary */
if(operation->type == OP__SET_VC_FIELD || operation->type == OP__IMPORT_VC_FROM) {
block = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(0 == block)
die("out of memory allocating VORBIS_COMMENT block");
while(FLAC__metadata_iterator_next(iterator))
;
if(!FLAC__metadata_iterator_insert_block_after(iterator, block)) {
print_error_with_chain_status(chain, "%s: ERROR: adding new VORBIS_COMMENT block to metadata", filename);
return false;
}
/* iterator is left pointing to new block */
FLAC__ASSERT(FLAC__metadata_iterator_get_block(iterator) == block);
}
else {
FLAC__metadata_iterator_delete(iterator);
return ok;
}
}
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
switch(operation->type) {
case OP__SHOW_VC_VENDOR:
write_vc_field(prefix_with_filename? filename : 0, &block->data.vorbis_comment.vendor_string, raw, stdout);
break;
case OP__SHOW_VC_FIELD:
write_vc_fields(prefix_with_filename? filename : 0, operation->argument.vc_field_name.value, block->data.vorbis_comment.comments, block->data.vorbis_comment.num_comments, raw, stdout);
break;
case OP__REMOVE_VC_ALL:
ok = remove_vc_all(filename, block, needs_write);
break;
case OP__REMOVE_VC_FIELD:
ok = remove_vc_field(filename, block, operation->argument.vc_field_name.value, needs_write);
break;
case OP__REMOVE_VC_FIRSTFIELD:
ok = remove_vc_firstfield(filename, block, operation->argument.vc_field_name.value, needs_write);
break;
case OP__SET_VC_FIELD:
ok = set_vc_field(filename, block, &operation->argument.vc_field, needs_write, raw);
break;
case OP__IMPORT_VC_FROM:
ok = import_vc_from(filename, block, &operation->argument.filename, needs_write, raw);
break;
case OP__EXPORT_VC_TO:
ok = export_vc_to(filename, block, &operation->argument.filename, raw);
break;
default:
ok = false;
FLAC__ASSERT(0);
break;
};
FLAC__metadata_iterator_delete(iterator);
return ok;
}
