diff options
Diffstat (limited to '3rdparty/libflac/src/flac/vorbiscomment.c')
-rw-r--r-- | 3rdparty/libflac/src/flac/vorbiscomment.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/3rdparty/libflac/src/flac/vorbiscomment.c b/3rdparty/libflac/src/flac/vorbiscomment.c deleted file mode 100644 index 6b35a1e6359..00000000000 --- a/3rdparty/libflac/src/flac/vorbiscomment.c +++ /dev/null @@ -1,248 +0,0 @@ -/* flac - Command-line FLAC encoder/decoder - * Copyright (C) 2002,2003,2004,2005,2006,2007 Josh Coalson - * - * 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. - */ - -#if HAVE_CONFIG_H -# include <config.h> -#endif - -#include "vorbiscomment.h" -#include "FLAC/assert.h" -#include "FLAC/metadata.h" -#include "share/grabbag.h" /* for grabbag__file_get_filesize() */ -#include "share/utf8.h" -#include <ctype.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - - -/* - * This struct and the following 4 static functions are copied from - * ../metaflac/. Maybe someday there will be a convenience - * library for Vorbis comment parsing. - */ -typedef struct { - char *field; /* the whole field as passed on the command line, i.e. "NAME=VALUE" */ - char *field_name; - /* according to the vorbis spec, field values can contain \0 so simple C strings are not enough here */ - unsigned field_value_length; - char *field_value; - FLAC__bool field_value_from_file; /* true if field_value holds a filename for the value, false for plain value */ -} Argument_VcField; - -static void die(const char *message) -{ - FLAC__ASSERT(0 != message); - fprintf(stderr, "ERROR: %s\n", message); - exit(1); -} - -static char *local_strdup(const char *source) -{ - char *ret; - FLAC__ASSERT(0 != source); - if(0 == (ret = strdup(source))) - die("out of memory during strdup()"); - return ret; -} - -static FLAC__bool parse_vorbis_comment_field(const char *field_ref, char **field, char **name, char **value, unsigned *length, const char **violation) -{ - static const char * const violations[] = { - "field name contains invalid character", - "field contains no '=' character" - }; - - char *p, *q, *s; - - if(0 != field) - *field = local_strdup(field_ref); - - s = local_strdup(field_ref); - - if(0 == (p = strchr(s, '='))) { - free(s); - *violation = violations[1]; - return false; - } - *p++ = '\0'; - - for(q = s; *q; q++) { - if(*q < 0x20 || *q > 0x7d || *q == 0x3d) { - free(s); - *violation = violations[0]; - return false; - } - } - - *name = local_strdup(s); - *value = local_strdup(p); - *length = strlen(p); - - free(s); - return true; -} - -/* slight modification: no 'filename' arg, and errors are passed back in 'violation' instead of printed to stderr */ -static FLAC__bool set_vc_field(FLAC__StreamMetadata *block, const Argument_VcField *field, FLAC__bool *needs_write, FLAC__bool raw, const char **violation) -{ - FLAC__StreamMetadata_VorbisComment_Entry entry; - char *converted; - - FLAC__ASSERT(0 != block); - FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT); - FLAC__ASSERT(0 != field); - FLAC__ASSERT(0 != needs_write); - - if(field->field_value_from_file) { - /* read the file into 'data' */ - FILE *f = 0; - char *data = 0; - const off_t size = grabbag__file_get_filesize(field->field_value); - if(size < 0) { - *violation = "can't open file for tag value"; - return false; - } - if(size >= 0x100000) { /* magic arbitrary limit, actual format limit is near 16MB */ - *violation = "file for tag value is too large"; - return false; - } - if(0 == (data = malloc(size+1))) - die("out of memory allocating tag value"); - data[size] = '\0'; - if(0 == (f = fopen(field->field_value, "rb")) || fread(data, 1, size, f) != (size_t)size) { - free(data); - if(f) - fclose(f); - *violation = "error while reading file for tag value"; - return false; - } - fclose(f); - if(strlen(data) != (size_t)size) { - free(data); - *violation = "file for tag value has embedded NULs"; - return false; - } - - /* move 'data' into 'converted', converting to UTF-8 if necessary */ - if(raw) { - converted = data; - } - else if(utf8_encode(data, &converted) >= 0) { - free(data); - } - else { - free(data); - *violation = "error converting file contents to UTF-8 for tag value"; - return false; - } - - /* create and entry and append it */ - if(!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, field->field_name, converted)) { - free(converted); - *violation = "file for tag value is not valid UTF-8"; - return false; - } - free(converted); - if(!FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/false)) { - *violation = "memory allocation failure"; - return false; - } - - *needs_write = true; - return true; - } - else { - FLAC__bool needs_free = false; - if(raw) { - entry.entry = (FLAC__byte *)field->field; - } - else if(utf8_encode(field->field, &converted) >= 0) { - entry.entry = (FLAC__byte *)converted; - needs_free = true; - } - else { - *violation = "error converting comment to UTF-8"; - return false; - } - entry.length = strlen((const char *)entry.entry); - if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) { - if(needs_free) - free(converted); - /* - * our previous parsing has already established that the field - * name is OK, so it must be the field value - */ - *violation = "tag value for is not valid UTF-8"; - return false; - } - - if(!FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/true)) { - if(needs_free) - free(converted); - *violation = "memory allocation failure"; - return false; - } - - *needs_write = true; - if(needs_free) - free(converted); - return true; - } -} - -/* - * The rest of the code is novel - */ - -static void free_field(Argument_VcField *obj) -{ - if(0 != obj->field) - free(obj->field); - if(0 != obj->field_name) - free(obj->field_name); - if(0 != obj->field_value) - free(obj->field_value); -} - -FLAC__bool flac__vorbiscomment_add(FLAC__StreamMetadata *block, const char *comment, FLAC__bool value_from_file, FLAC__bool raw, 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, violation)) { - free_field(&parsed); - return false; - } - else { - free_field(&parsed); - return true; - } -} |