1 /* metaflac - Command-line FLAC metadata editor
2 * Copyright (C) 2001,2002,2003,2004,2005,2006 Josh Coalson
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 #include "FLAC/assert.h"
26 #include "share/grabbag.h" /* for grabbag__file_get_filesize() */
27 #include "share/utf8.h"
32 static FLAC__bool remove_vc_all(const char *filename, FLAC__StreamMetadata *block, FLAC__bool *needs_write);
33 static FLAC__bool remove_vc_field(const char *filename, FLAC__StreamMetadata *block, const char *field_name, FLAC__bool *needs_write);
34 static FLAC__bool remove_vc_firstfield(const char *filename, FLAC__StreamMetadata *block, const char *field_name, FLAC__bool *needs_write);
35 static FLAC__bool set_vc_field(const char *filename, FLAC__StreamMetadata *block, const Argument_VcField *field, FLAC__bool *needs_write, FLAC__bool raw);
36 static FLAC__bool import_vc_from(const char *filename, FLAC__StreamMetadata *block, const Argument_Filename *vc_filename, FLAC__bool *needs_write, FLAC__bool raw);
37 static FLAC__bool export_vc_to(const char *filename, FLAC__StreamMetadata *block, const Argument_Filename *vc_filename, FLAC__bool raw);
39 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)
41 FLAC__bool ok = true, found_vc_block = false;
42 FLAC__StreamMetadata *block = 0;
43 FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
46 die("out of memory allocating iterator");
48 FLAC__metadata_iterator_init(iterator, chain);
51 block = FLAC__metadata_iterator_get_block(iterator);
52 if(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
53 found_vc_block = true;
54 } while(!found_vc_block && FLAC__metadata_iterator_next(iterator));
57 /* create a new block if necessary */
58 if(operation->type == OP__SET_VC_FIELD || operation->type == OP__IMPORT_VC_FROM) {
59 block = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
61 die("out of memory allocating VORBIS_COMMENT block");
62 while(FLAC__metadata_iterator_next(iterator))
64 if(!FLAC__metadata_iterator_insert_block_after(iterator, block)) {
65 print_error_with_chain_status(chain, "%s: ERROR: adding new VORBIS_COMMENT block to metadata", filename);
68 /* iterator is left pointing to new block */
69 FLAC__ASSERT(FLAC__metadata_iterator_get_block(iterator) == block);
72 FLAC__metadata_iterator_delete(iterator);
77 FLAC__ASSERT(0 != block);
78 FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
80 switch(operation->type) {
81 case OP__SHOW_VC_VENDOR:
82 write_vc_field(prefix_with_filename? filename : 0, &block->data.vorbis_comment.vendor_string, raw, stdout);
84 case OP__SHOW_VC_FIELD:
85 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);
87 case OP__REMOVE_VC_ALL:
88 ok = remove_vc_all(filename, block, needs_write);
90 case OP__REMOVE_VC_FIELD:
91 ok = remove_vc_field(filename, block, operation->argument.vc_field_name.value, needs_write);
93 case OP__REMOVE_VC_FIRSTFIELD:
94 ok = remove_vc_firstfield(filename, block, operation->argument.vc_field_name.value, needs_write);
96 case OP__SET_VC_FIELD:
97 ok = set_vc_field(filename, block, &operation->argument.vc_field, needs_write, raw);
99 case OP__IMPORT_VC_FROM:
100 ok = import_vc_from(filename, block, &operation->argument.filename, needs_write, raw);
102 case OP__EXPORT_VC_TO:
103 ok = export_vc_to(filename, block, &operation->argument.filename, raw);
111 FLAC__metadata_iterator_delete(iterator);
119 FLAC__bool remove_vc_all(const char *filename, FLAC__StreamMetadata *block, FLAC__bool *needs_write)
121 FLAC__ASSERT(0 != block);
122 FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
123 FLAC__ASSERT(0 != needs_write);
125 if(0 != block->data.vorbis_comment.comments) {
126 FLAC__ASSERT(block->data.vorbis_comment.num_comments > 0);
127 if(!FLAC__metadata_object_vorbiscomment_resize_comments(block, 0)) {
128 fprintf(stderr, "%s: ERROR: memory allocation failure\n", filename);
134 FLAC__ASSERT(block->data.vorbis_comment.num_comments == 0);
140 FLAC__bool remove_vc_field(const char *filename, FLAC__StreamMetadata *block, const char *field_name, FLAC__bool *needs_write)
144 FLAC__ASSERT(0 != needs_write);
146 n = FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, field_name);
149 fprintf(stderr, "%s: ERROR: memory allocation failure\n", filename);
158 FLAC__bool remove_vc_firstfield(const char *filename, FLAC__StreamMetadata *block, const char *field_name, FLAC__bool *needs_write)
162 FLAC__ASSERT(0 != needs_write);
164 n = FLAC__metadata_object_vorbiscomment_remove_entry_matching(block, field_name);
167 fprintf(stderr, "%s: ERROR: memory allocation failure\n", filename);
176 FLAC__bool set_vc_field(const char *filename, FLAC__StreamMetadata *block, const Argument_VcField *field, FLAC__bool *needs_write, FLAC__bool raw)
178 FLAC__StreamMetadata_VorbisComment_Entry entry;
181 FLAC__ASSERT(0 != block);
182 FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
183 FLAC__ASSERT(0 != field);
184 FLAC__ASSERT(0 != needs_write);
186 if(field->field_value_from_file) {
187 /* read the file into 'data' */
190 const off_t size = grabbag__file_get_filesize(field->field_value);
192 fprintf(stderr, "%s: ERROR: can't open file '%s' for '%s' tag value\n", filename, field->field_value, field->field_name);
195 if(size >= 0x100000) { /* magic arbitrary limit, actual format limit is near 16MB */
196 fprintf(stderr, "%s: ERROR: file '%s' for '%s' tag value is too large\n", filename, field->field_value, field->field_name);
199 if(0 == (data = malloc(size+1)))
200 die("out of memory allocating tag value");
202 if(0 == (f = fopen(field->field_value, "rb")) || fread(data, 1, size, f) != (size_t)size) {
203 fprintf(stderr, "%s: ERROR: while reading file '%s' for '%s' tag value: %s\n", filename, field->field_value, field->field_name, strerror(errno));
210 if(strlen(data) != (size_t)size) {
212 fprintf(stderr, "%s: ERROR: file '%s' for '%s' tag value has embedded NULs\n", filename, field->field_value, field->field_name);
216 /* move 'data' into 'converted', converting to UTF-8 if necessary */
220 else if(utf8_encode(data, &converted) >= 0) {
225 fprintf(stderr, "%s: ERROR: converting file '%s' contents to UTF-8 for tag value\n", filename, field->field_value);
229 /* create and entry and append it */
230 if(!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, field->field_name, converted)) {
232 fprintf(stderr, "%s: ERROR: file '%s' for '%s' tag value is not valid UTF-8\n", filename, field->field_value, field->field_name);
236 if(!FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/false)) {
237 fprintf(stderr, "%s: ERROR: memory allocation failure\n", filename);
245 FLAC__bool needs_free = false;
247 entry.entry = (FLAC__byte *)field->field;
249 else if(utf8_encode(field->field, &converted) >= 0) {
250 entry.entry = (FLAC__byte *)converted;
254 fprintf(stderr, "%s: ERROR: converting comment '%s' to UTF-8\n", filename, field->field);
257 entry.length = strlen((const char *)entry.entry);
258 if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) {
262 * our previous parsing has already established that the field
263 * name is OK, so it must be the field value
265 fprintf(stderr, "%s: ERROR: tag value for '%s' is not valid UTF-8\n", filename, field->field_name);
269 if(!FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/true)) {
272 fprintf(stderr, "%s: ERROR: memory allocation failure\n", filename);
283 FLAC__bool import_vc_from(const char *filename, FLAC__StreamMetadata *block, const Argument_Filename *vc_filename, FLAC__bool *needs_write, FLAC__bool raw)
289 if(0 == vc_filename->value || strlen(vc_filename->value) == 0) {
290 fprintf(stderr, "%s: ERROR: empty import file name\n", filename);
293 if(0 == strcmp(vc_filename->value, "-"))
296 f = fopen(vc_filename->value, "r");
299 fprintf(stderr, "%s: ERROR: can't open import file %s: %s\n", filename, vc_filename->value, strerror(errno));
304 while(ret && !feof(f)) {
305 fgets(line, sizeof(line), f);
307 char *p = strchr(line, '\n');
309 fprintf(stderr, "%s: ERROR: line too long, aborting\n", vc_filename->value);
313 const char *violation;
314 Argument_VcField field;
316 memset(&field, 0, sizeof(Argument_VcField));
317 field.field_value_from_file = false;
318 if(!parse_vorbis_comment_field(line, &field.field, &field.field_name, &field.field_value, &field.field_value_length, &violation)) {
319 FLAC__ASSERT(0 != violation);
320 fprintf(stderr, "%s: ERROR: malformed vorbis comment field \"%s\",\n %s\n", vc_filename->value, line, violation);
324 ret = set_vc_field(filename, block, &field, needs_write, raw);
328 if(0 != field.field_name)
329 free(field.field_name);
330 if(0 != field.field_value)
331 free(field.field_value);
341 FLAC__bool export_vc_to(const char *filename, FLAC__StreamMetadata *block, const Argument_Filename *vc_filename, FLAC__bool raw)
346 if(0 == vc_filename->value || strlen(vc_filename->value) == 0) {
347 fprintf(stderr, "%s: ERROR: empty export file name\n", filename);
350 if(0 == strcmp(vc_filename->value, "-"))
353 f = fopen(vc_filename->value, "w");
356 fprintf(stderr, "%s: ERROR: can't open export file %s: %s\n", filename, vc_filename->value, strerror(errno));
362 write_vc_fields(0, 0, block->data.vorbis_comment.comments, block->data.vorbis_comment.num_comments, raw, f);