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-rw-r--r--src/libid3tag/field.c890
1 files changed, 0 insertions, 890 deletions
diff --git a/src/libid3tag/field.c b/src/libid3tag/field.c
index f2ecc0fd..e69de29b 100644
--- a/src/libid3tag/field.c
+++ b/src/libid3tag/field.c
@@ -1,890 +0,0 @@
-/*
- * libid3tag - ID3 tag manipulation library
- * Copyright (C) 2000-2004 Underbit Technologies, Inc.
- *
- * 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
- *
- * $Id: field.c,v 1.16 2004/01/23 09:41:32 rob Exp $
- */
-
-# ifdef HAVE_CONFIG_H
-# include "config.h"
-# endif
-
-# include "global.h"
-
-# include <stdlib.h>
-# include <string.h>
-
-# ifdef HAVE_ASSERT_H
-# include <assert.h>
-# endif
-
-# include "id3tag.h"
-# include "field.h"
-# include "frame.h"
-# include "render.h"
-# include "ucs4.h"
-# include "latin1.h"
-# include "parse.h"
-
-/*
- * NAME: field->init()
- * DESCRIPTION: initialize a field to a default value for the given type
- */
-void id3_field_init(union id3_field *field, enum id3_field_type type)
-{
- assert(field);
-
- switch (field->type = type) {
- case ID3_FIELD_TYPE_TEXTENCODING:
- case ID3_FIELD_TYPE_INT8:
- case ID3_FIELD_TYPE_INT16:
- case ID3_FIELD_TYPE_INT24:
- case ID3_FIELD_TYPE_INT32:
- field->number.value = 0;
- break;
-
- case ID3_FIELD_TYPE_LATIN1:
- case ID3_FIELD_TYPE_LATIN1FULL:
- field->latin1.ptr = 0;
- break;
-
- case ID3_FIELD_TYPE_LATIN1LIST:
- field->latin1list.nstrings = 0;
- field->latin1list.strings = 0;
-
- case ID3_FIELD_TYPE_STRING:
- case ID3_FIELD_TYPE_STRINGFULL:
- field->string.ptr = 0;
- break;
-
- case ID3_FIELD_TYPE_STRINGLIST:
- field->stringlist.nstrings = 0;
- field->stringlist.strings = 0;
- break;
-
- case ID3_FIELD_TYPE_LANGUAGE:
- strcpy(field->immediate.value, "XXX");
- break;
-
- case ID3_FIELD_TYPE_FRAMEID:
- strcpy(field->immediate.value, "XXXX");
- break;
-
- case ID3_FIELD_TYPE_DATE:
- memset(field->immediate.value, 0, sizeof(field->immediate.value));
- break;
-
- case ID3_FIELD_TYPE_INT32PLUS:
- case ID3_FIELD_TYPE_BINARYDATA:
- field->binary.data = 0;
- field->binary.length = 0;
- break;
- }
-}
-
-/*
- * NAME: field->finish()
- * DESCRIPTION: reset a field, deallocating memory if necessary
- */
-void id3_field_finish(union id3_field *field)
-{
- unsigned int i;
-
- assert(field);
-
- switch (field->type) {
- case ID3_FIELD_TYPE_TEXTENCODING:
- case ID3_FIELD_TYPE_INT8:
- case ID3_FIELD_TYPE_INT16:
- case ID3_FIELD_TYPE_INT24:
- case ID3_FIELD_TYPE_INT32:
- case ID3_FIELD_TYPE_LANGUAGE:
- case ID3_FIELD_TYPE_FRAMEID:
- case ID3_FIELD_TYPE_DATE:
- break;
-
- case ID3_FIELD_TYPE_LATIN1:
- case ID3_FIELD_TYPE_LATIN1FULL:
- if (field->latin1.ptr)
- free(field->latin1.ptr);
- break;
-
- case ID3_FIELD_TYPE_LATIN1LIST:
- for (i = 0; i < field->latin1list.nstrings; ++i)
- free(field->latin1list.strings[i]);
-
- if (field->latin1list.strings)
- free(field->latin1list.strings);
- break;
-
- case ID3_FIELD_TYPE_STRING:
- case ID3_FIELD_TYPE_STRINGFULL:
- if (field->string.ptr)
- free(field->string.ptr);
- break;
-
- case ID3_FIELD_TYPE_STRINGLIST:
- for (i = 0; i < field->stringlist.nstrings; ++i)
- free(field->stringlist.strings[i]);
-
- if (field->stringlist.strings)
- free(field->stringlist.strings);
- break;
-
- case ID3_FIELD_TYPE_INT32PLUS:
- case ID3_FIELD_TYPE_BINARYDATA:
- if (field->binary.data)
- free(field->binary.data);
- break;
- }
-
- id3_field_init(field, field->type);
-}
-
-/*
- * NAME: field->type()
- * DESCRIPTION: return the value type of a field
- */
-enum id3_field_type id3_field_type(union id3_field const *field)
-{
- assert(field);
-
- return field->type;
-}
-
-/*
- * NAME: field->parse()
- * DESCRIPTION: parse a field value
- */
-int id3_field_parse(union id3_field *field, id3_byte_t const **ptr,
- id3_length_t length, enum id3_field_textencoding *encoding)
-{
- assert(field);
-
- id3_field_finish(field);
-
- switch (field->type) {
- case ID3_FIELD_TYPE_INT32:
- if (length < 4)
- goto fail;
-
- field->number.value = id3_parse_uint(ptr, 4);
- break;
-
- case ID3_FIELD_TYPE_INT24:
- if (length < 3)
- goto fail;
-
- field->number.value = id3_parse_uint(ptr, 3);
- break;
-
- case ID3_FIELD_TYPE_INT16:
- if (length < 2)
- goto fail;
-
- field->number.value = id3_parse_uint(ptr, 2);
- break;
-
- case ID3_FIELD_TYPE_INT8:
- case ID3_FIELD_TYPE_TEXTENCODING:
- if (length < 1)
- goto fail;
-
- field->number.value = id3_parse_uint(ptr, 1);
-
- if (field->type == ID3_FIELD_TYPE_TEXTENCODING)
- *encoding = field->number.value;
- break;
-
- case ID3_FIELD_TYPE_LANGUAGE:
- if (length < 3)
- goto fail;
-
- id3_parse_immediate(ptr, 3, field->immediate.value);
- break;
-
- case ID3_FIELD_TYPE_FRAMEID:
- if (length < 4)
- goto fail;
-
- id3_parse_immediate(ptr, 4, field->immediate.value);
- break;
-
- case ID3_FIELD_TYPE_DATE:
- if (length < 8)
- goto fail;
-
- id3_parse_immediate(ptr, 8, field->immediate.value);
- break;
-
- case ID3_FIELD_TYPE_LATIN1:
- case ID3_FIELD_TYPE_LATIN1FULL:
- {
- id3_latin1_t *latin1;
-
- latin1 = id3_parse_latin1(ptr, length,
- field->type == ID3_FIELD_TYPE_LATIN1FULL);
- if (latin1 == 0)
- goto fail;
-
- field->latin1.ptr = latin1;
- }
- break;
-
- case ID3_FIELD_TYPE_LATIN1LIST:
- {
- id3_byte_t const *end;
- id3_latin1_t *latin1, **strings;
-
- end = *ptr + length;
-
- while (end - *ptr > 0) {
- latin1 = id3_parse_latin1(ptr, end - *ptr, 0);
- if (latin1 == 0)
- goto fail;
-
- strings = realloc(field->latin1list.strings,
- (field->latin1list.nstrings + 1) * sizeof(*strings));
- if (strings == 0) {
- free(latin1);
- goto fail;
- }
-
- field->latin1list.strings = strings;
- field->latin1list.strings[field->latin1list.nstrings++] = latin1;
- }
- }
- break;
-
- case ID3_FIELD_TYPE_STRING:
- case ID3_FIELD_TYPE_STRINGFULL:
- {
- id3_ucs4_t *ucs4;
-
- ucs4 = id3_parse_string(ptr, length, *encoding,
- field->type == ID3_FIELD_TYPE_STRINGFULL);
- if (ucs4 == 0)
- goto fail;
-
- field->string.ptr = ucs4;
- }
- break;
-
- case ID3_FIELD_TYPE_STRINGLIST:
- {
- id3_byte_t const *end;
- id3_ucs4_t *ucs4, **strings;
-
- end = *ptr + length;
-
- while (end - *ptr > 0) {
- ucs4 = id3_parse_string(ptr, end - *ptr, *encoding, 0);
- if (ucs4 == 0)
- goto fail;
-
- strings = realloc(field->stringlist.strings,
- (field->stringlist.nstrings + 1) * sizeof(*strings));
- if (strings == 0) {
- free(ucs4);
- goto fail;
- }
-
- field->stringlist.strings = strings;
- field->stringlist.strings[field->stringlist.nstrings++] = ucs4;
- }
- }
- break;
-
- case ID3_FIELD_TYPE_INT32PLUS:
- case ID3_FIELD_TYPE_BINARYDATA:
- {
- id3_byte_t *data;
-
- data = id3_parse_binary(ptr, length);
- if (data == 0)
- goto fail;
-
- field->binary.data = data;
- field->binary.length = length;
- }
- break;
- }
-
- return 0;
-
- fail:
- return -1;
-}
-
-/*
- * NAME: field->render()
- * DESCRIPTION: render a field value
- */
-id3_length_t id3_field_render(union id3_field const *field, id3_byte_t **ptr,
- enum id3_field_textencoding *encoding,
- int terminate)
-{
- id3_length_t size;
- unsigned int i;
-
- assert(field && encoding);
-
- switch (field->type) {
- case ID3_FIELD_TYPE_INT32:
- return id3_render_int(ptr, field->number.value, 4);
-
- case ID3_FIELD_TYPE_INT24:
- return id3_render_int(ptr, field->number.value, 3);
-
- case ID3_FIELD_TYPE_INT16:
- return id3_render_int(ptr, field->number.value, 2);
-
- case ID3_FIELD_TYPE_TEXTENCODING:
- *encoding = field->number.value;
- case ID3_FIELD_TYPE_INT8:
- return id3_render_int(ptr, field->number.value, 1);
-
- case ID3_FIELD_TYPE_LATIN1:
- case ID3_FIELD_TYPE_LATIN1FULL:
- return id3_render_latin1(ptr, field->latin1.ptr, terminate);
-
- case ID3_FIELD_TYPE_LATIN1LIST:
- size = 0;
- for (i = 0; i < field->latin1list.nstrings; ++i) {
- size += id3_render_latin1(ptr, field->latin1list.strings[i],
- (i < field->latin1list.nstrings - 1) ||
- terminate);
- }
- return size;
-
- case ID3_FIELD_TYPE_STRING:
- case ID3_FIELD_TYPE_STRINGFULL:
- return id3_render_string(ptr, field->string.ptr, *encoding, terminate);
-
- case ID3_FIELD_TYPE_STRINGLIST:
- size = 0;
- for (i = 0; i < field->stringlist.nstrings; ++i) {
- size += id3_render_string(ptr, field->stringlist.strings[i], *encoding,
- (i < field->stringlist.nstrings - 1) ||
- terminate);
- }
- return size;
-
- case ID3_FIELD_TYPE_LANGUAGE:
- return id3_render_immediate(ptr, field->immediate.value, 3);
-
- case ID3_FIELD_TYPE_FRAMEID:
- return id3_render_immediate(ptr, field->immediate.value, 4);
-
- case ID3_FIELD_TYPE_DATE:
- return id3_render_immediate(ptr, field->immediate.value, 8);
-
- case ID3_FIELD_TYPE_INT32PLUS:
- case ID3_FIELD_TYPE_BINARYDATA:
- return id3_render_binary(ptr, field->binary.data, field->binary.length);
- }
-
- return 0;
-}
-
-/*
- * NAME: field->setint()
- * DESCRIPTION: set the value of an int field
- */
-int id3_field_setint(union id3_field *field, signed long number)
-{
- assert(field);
-
- switch (field->type) {
- case ID3_FIELD_TYPE_INT8:
- if (number > 0x7f || number < -0x80)
- return -1;
- break;
-
- case ID3_FIELD_TYPE_INT16:
- if (number > 0x7fff || number < -0x8000)
- return -1;
- break;
-
- case ID3_FIELD_TYPE_INT24:
- if (number > 0x7fffffL || number < -0x800000L)
- return -1;
- break;
-
- case ID3_FIELD_TYPE_INT32:
- if (number > 0x7fffffffL || number < -0x80000000L)
- return -1;
- break;
-
- default:
- return -1;
- }
-
- id3_field_finish(field);
-
- field->number.value = number;
-
- return 0;
-}
-
-/*
- * NAME: field->settextencoding()
- * DESCRIPTION: set the value of a textencoding field
- */
-int id3_field_settextencoding(union id3_field *field,
- enum id3_field_textencoding encoding)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_TEXTENCODING)
- return -1;
-
- id3_field_finish(field);
-
- field->number.value = encoding;
-
- return 0;
-}
-
-static
-int set_latin1(union id3_field *field, id3_latin1_t const *latin1)
-{
- id3_latin1_t *data;
-
- if (latin1 == 0 || *latin1 == 0)
- data = 0;
- else {
- data = id3_latin1_duplicate(latin1);
- if (data == 0)
- return -1;
- }
-
- field->latin1.ptr = data;
-
- return 0;
-}
-
-/*
- * NAME: field->setlatin1()
- * DESCRIPTION: set the value of a latin1 field
- */
-int id3_field_setlatin1(union id3_field *field, id3_latin1_t const *latin1)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_LATIN1)
- return -1;
-
- id3_field_finish(field);
-
- if (latin1) {
- id3_latin1_t const *ptr;
-
- for (ptr = latin1; *ptr; ++ptr) {
- if (*ptr == '\n')
- return -1;
- }
- }
-
- return set_latin1(field, latin1);
-}
-
-/*
- * NAME: field->setfulllatin1()
- * DESCRIPTION: set the value of a full latin1 field
- */
-int id3_field_setfulllatin1(union id3_field *field, id3_latin1_t const *latin1)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_LATIN1FULL)
- return -1;
-
- id3_field_finish(field);
-
- return set_latin1(field, latin1);
-}
-
-static
-int set_string(union id3_field *field, id3_ucs4_t const *string)
-{
- id3_ucs4_t *data;
-
- if (string == 0 || *string == 0)
- data = 0;
- else {
- data = id3_ucs4_duplicate(string);
- if (data == 0)
- return -1;
- }
-
- field->string.ptr = data;
-
- return 0;
-}
-
-/*
- * NAME: field->setstring()
- * DESCRIPTION: set the value of a string field
- */
-int id3_field_setstring(union id3_field *field, id3_ucs4_t const *string)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRING)
- return -1;
-
- id3_field_finish(field);
-
- if (string) {
- id3_ucs4_t const *ptr;
-
- for (ptr = string; *ptr; ++ptr) {
- if (*ptr == '\n')
- return -1;
- }
- }
-
- return set_string(field, string);
-}
-
-/*
- * NAME: field->setfullstring()
- * DESCRIPTION: set the value of a full string field
- */
-int id3_field_setfullstring(union id3_field *field, id3_ucs4_t const *string)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRINGFULL)
- return -1;
-
- id3_field_finish(field);
-
- return set_string(field, string);
-}
-
-/*
- * NAME: field->setstrings()
- * DESCRIPTION: set the value of a stringlist field
- */
-int id3_field_setstrings(union id3_field *field,
- unsigned int length, id3_ucs4_t **ptrs)
-{
- id3_ucs4_t **strings;
- unsigned int i;
-
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRINGLIST)
- return -1;
-
- id3_field_finish(field);
-
- if (length == 0)
- return 0;
-
- strings = malloc(length * sizeof(*strings));
- if (strings == 0)
- return -1;
-
- for (i = 0; i < length; ++i) {
- strings[i] = id3_ucs4_duplicate(ptrs[i]);
- if (strings[i] == 0) {
- while (i--)
- free(strings[i]);
-
- free(strings);
- return -1;
- }
- }
-
- field->stringlist.strings = strings;
- field->stringlist.nstrings = length;
-
- return 0;
-}
-
-/*
- * NAME: field->addstring()
- * DESCRIPTION: add a string to a stringlist field
- */
-int id3_field_addstring(union id3_field *field, id3_ucs4_t const *string)
-{
- id3_ucs4_t *new, **strings;
-
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRINGLIST)
- return -1;
-
- if (string == 0)
- string = id3_ucs4_empty;
-
- new = id3_ucs4_duplicate(string);
- if (new == 0)
- return -1;
-
- strings = realloc(field->stringlist.strings,
- (field->stringlist.nstrings + 1) * sizeof(*strings));
- if (strings == 0) {
- free(new);
- return -1;
- }
-
- field->stringlist.strings = strings;
- field->stringlist.strings[field->stringlist.nstrings++] = new;
-
- return 0;
-}
-
-/*
- * NAME: field->setlanguage()
- * DESCRIPTION: set the value of a language field
- */
-int id3_field_setlanguage(union id3_field *field, char const *language)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_LANGUAGE)
- return -1;
-
- id3_field_finish(field);
-
- if (language) {
- if (strlen(language) != 3)
- return -1;
-
- strcpy(field->immediate.value, language);
- }
-
- return 0;
-}
-
-/*
- * NAME: field->setframeid()
- * DESCRIPTION: set the value of a frameid field
- */
-int id3_field_setframeid(union id3_field *field, char const *id)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_FRAMEID ||
- !id3_frame_validid(id))
- return -1;
-
- id3_field_finish(field);
-
- field->immediate.value[0] = id[0];
- field->immediate.value[1] = id[1];
- field->immediate.value[2] = id[2];
- field->immediate.value[3] = id[3];
- field->immediate.value[4] = 0;
-
- return 0;
-}
-
-/*
- * NAME: field->setbinarydata()
- * DESCRIPTION: set the value of a binarydata field
- */
-int id3_field_setbinarydata(union id3_field *field,
- id3_byte_t const *data, id3_length_t length)
-{
- id3_byte_t *mem;
-
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_BINARYDATA)
- return -1;
-
- id3_field_finish(field);
-
- if (length == 0)
- mem = 0;
- else {
- mem = malloc(length);
- if (mem == 0)
- return -1;
-
- assert(data);
-
- memcpy(mem, data, length);
- }
-
- field->binary.data = mem;
- field->binary.length = length;
-
- return 0;
-}
-
-/*
- * NAME: field->getint()
- * DESCRIPTION: return the value of an integer field
- */
-signed long id3_field_getint(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_INT8 &&
- field->type != ID3_FIELD_TYPE_INT16 &&
- field->type != ID3_FIELD_TYPE_INT24 &&
- field->type != ID3_FIELD_TYPE_INT32)
- return -1;
-
- return field->number.value;
-}
-
-/*
- * NAME: field->gettextencoding()
- * DESCRIPTION: return the value of a text encoding field
- */
-enum id3_field_textencoding
-id3_field_gettextencoding(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_TEXTENCODING)
- return -1;
-
- return field->number.value;
-}
-
-/*
- * NAME: field->getlatin1()
- * DESCRIPTION: return the value of a latin1 field
- */
-id3_latin1_t const *id3_field_getlatin1(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_LATIN1)
- return 0;
-
- return field->latin1.ptr ? field->latin1.ptr : (id3_latin1_t const *) "";
-}
-
-/*
- * NAME: field->getfulllatin1()
- * DESCRIPTION: return the value of a full latin1 field
- */
-id3_latin1_t const *id3_field_getfulllatin1(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_LATIN1FULL)
- return 0;
-
- return field->latin1.ptr ? field->latin1.ptr : (id3_latin1_t const *) "";
-}
-
-/*
- * NAME: field->getstring()
- * DESCRIPTION: return the value of a string field
- */
-id3_ucs4_t const *id3_field_getstring(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRING)
- return 0;
-
- return field->string.ptr ? field->string.ptr : id3_ucs4_empty;
-}
-
-/*
- * NAME: field->getfullstring()
- * DESCRIPTION: return the value of a fullstring field
- */
-id3_ucs4_t const *id3_field_getfullstring(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRINGFULL)
- return 0;
-
- return field->string.ptr ? field->string.ptr : id3_ucs4_empty;
-}
-
-/*
- * NAME: field->getnstrings()
- * DESCRIPTION: return the number of strings in a stringlist field
- */
-unsigned int id3_field_getnstrings(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRINGLIST)
- return 0;
-
- return field->stringlist.nstrings;
-}
-
-/*
- * NAME: field->getstrings()
- * DESCRIPTION: return one value of a stringlist field
- */
-id3_ucs4_t const *id3_field_getstrings(union id3_field const *field,
- unsigned int index)
-{
- id3_ucs4_t const *string;
-
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_STRINGLIST ||
- index >= field->stringlist.nstrings)
- return 0;
-
- string = field->stringlist.strings[index];
-
- return string ? string : id3_ucs4_empty;
-}
-
-/*
- * NAME: field->getframeid()
- * DESCRIPTION: return the value of a frameid field
- */
-char const *id3_field_getframeid(union id3_field const *field)
-{
- assert(field);
-
- if (field->type != ID3_FIELD_TYPE_FRAMEID)
- return 0;
-
- return field->immediate.value;
-}
-
-/*
- * NAME: field->getbinarydata()
- * DESCRIPTION: return the value of a binarydata field
- */
-id3_byte_t const *id3_field_getbinarydata(union id3_field const *field,
- id3_length_t *length)
-{
- static id3_byte_t const empty;
-
- assert(field && length);
-
- if (field->type != ID3_FIELD_TYPE_BINARYDATA)
- return 0;
-
- assert(field->binary.length == 0 || field->binary.data);
-
- *length = field->binary.length;
-
- return field->binary.data ? field->binary.data : &empty;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-09 00:51:02 +0000