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3f848a435381b3caeb2b09a3ee1765379a94b2d2
flac/src/metaflac/main.c
Josh Coalson e959a5de45 flesh out the option processing
2002-05-23 05:21:19 +00:00

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/* metaflac - Command-line FLAC metadata editor
* Copyright (C) 2001,2002 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.
*/
/*@@@
more powerful operations yet to add:
add a seektable, using same args as flac
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include "FLAC/assert.h"
#include "FLAC/metadata.h"
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_GETOPT_LONG
# include <getopt.h>
#else
# include "share/getopt.h"
#endif
/*
getopt format struct; note we don't use short options so we just
set the 'val' field to 0 everywhere to indicate a valid option.
*/
static struct option long_options_[] = {
/* global options */
{ "preserve-modtime", 0, 0, 0 },
{ "with-filename", 0, 0, 0 },
{ "no-filename", 0, 0, 0 },
{ "dont-use-padding", 0, 0, 0 },
/* shorthand operations */
{ "show-md5sum", 0, 0, 0 },
{ "show-min-blocksize", 0, 0, 0 },
{ "show-max-blocksize", 0, 0, 0 },
{ "show-min-framesize", 0, 0, 0 },
{ "show-max-framesize", 0, 0, 0 },
{ "show-sample-rate", 0, 0, 0 },
{ "show-channels", 0, 0, 0 },
{ "show-bps", 0, 0, 0 },
{ "show-total-samples", 0, 0, 0 },
{ "show-vc-vendor", 0, 0, 0 },
{ "show-vc-field", 1, 0, 0 },
{ "remove-vc-all", 0, 0, 0 },
{ "remove-vc-field", 1, 0, 0 },
{ "remove-vc-firstfield", 1, 0, 0 },
{ "set-vc-field", 1, 0, 0 },
/* major operations */
{ "help", 0, 0, 0 },
{ "list", 0, 0, 0 },
{ "append", 0, 0, 0 },
{ "remove", 0, 0, 0 },
{ "remove-all", 0, 0, 0 },
{ "merge-padding", 0, 0, 0 },
{ "sort-padding", 0, 0, 0 },
{ "block-number", 1, 0, 0 },
{ "block-type", 1, 0, 0 },
{ "except-block-type", 1, 0, 0 },
{ "data-format", 1, 0, 0 },
{ "application-data-format", 1, 0, 0 },
{ "from-file", 1, 0, 0 },
{0, 0, 0, 0}
};
typedef enum {
OP__SHOW_MD5SUM,
OP__SHOW_MIN_BLOCKSIZE,
OP__SHOW_MAX_BLOCKSIZE,
OP__SHOW_MIN_FRAMESIZE,
OP__SHOW_MAX_FRAMESIZE,
OP__SHOW_SAMPLE_RATE,
OP__SHOW_CHANNELS,
OP__SHOW_BPS,
OP__SHOW_TOTAL_SAMPLES,
OP__SHOW_VC_VENDOR,
OP__SHOW_VC_FIELD,
OP__REMOVE_VC_ALL,
OP__REMOVE_VC_FIELD,
OP__REMOVE_VC_FIRSTFIELD,
OP__SET_VC_FIELD,
OP__HELP,
OP__LIST,
OP__APPEND,
OP__REMOVE,
OP__REMOVE_ALL,
OP__MERGE_PADDING,
OP__SORT_PADDING,
OP__BLOCK_NUMBER,
OP__BLOCK_TYPE,
OP__EXCEPT_BLOCK_TYPE,
OP__DATA_FORMAT,
OP__APPLICATION_DATA_FORMAT,
OP__FROM_FILE
} OperationType;
typedef struct {
char *field_name;
} Argument_VcFieldName;
typedef struct {
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;
} Argument_VcField;
typedef struct {
unsigned num_entries;
unsigned *entries;
} Argument_BlockNumber;
typedef struct {
int dummy;
} Argument_BlockType;
typedef struct {
FLAC__bool is_binary;
} Argument_DataFormat;
typedef struct {
FLAC__bool is_hexdump;
} Argument_ApplicationDataFormat;
typedef struct {
char *file_name;
} Argument_FromFile;
typedef struct {
OperationType type;
union {
Argument_VcFieldName show_vc_field;
Argument_VcFieldName remove_vc_field;
Argument_VcFieldName remove_vc_firstfield;
Argument_VcField set_vc_field;
Argument_BlockNumber block_number;
Argument_BlockType block_type;
Argument_BlockType except_block_type;
Argument_DataFormat data_format;
Argument_ApplicationDataFormat application_data_format;
Argument_FromFile from_file;
} argument;
} Operation;
typedef struct {
FLAC__bool preserve_modtime;
FLAC__bool prefix_with_filename;
FLAC__bool use_padding;
struct {
unsigned num_shorthand_ops;
unsigned num_major_ops;
FLAC__bool has_block_type;
FLAC__bool has_except_block_type;
} checks;
struct {
Operation *operations;
unsigned num_operations;
unsigned capacity;
} ops;
} CommandLineOptions;
static void init_options(CommandLineOptions *options);
static FLAC__bool parse_options(int argc, char *argv[], CommandLineOptions *options);
static FLAC__bool parse_option(int option_index, const char *option_argument, CommandLineOptions *options);
static void free_options(CommandLineOptions *options);
static void append_operation(CommandLineOptions *options, Operation operation);
static Operation *append_major_operation(CommandLineOptions *options, OperationType type);
static Operation *append_shorthand_operation(CommandLineOptions *options, OperationType type);
static int short_usage(const char *message, ...);
static int long_usage(const char *message, ...);
static void hexdump(const FLAC__byte *buf, unsigned bytes, const char *indent);
static char *local_strdup(const char *source);
static FLAC__bool parse_vorbis_comment_field(const char *field, char **name, char **value, unsigned *length);
static FLAC__bool parse_block_number(const char *in, Argument_BlockNumber *out);
static FLAC__bool parse_block_type(const char *in, Argument_BlockType *out);
static FLAC__bool parse_data_format(const char *in, Argument_DataFormat *out);
static FLAC__bool parse_application_data_format(const char *in, Argument_ApplicationDataFormat *out);
int main(int argc, char *argv[])
{
CommandLineOptions options;
int ret;
init_options(&options);
ret = !parse_options(argc, argv, &options);
free_options(&options);
return ret;
}
void init_options(CommandLineOptions *options)
{
options->preserve_modtime = false;
/* hack to mean "use default if not forced on command line" */
FLAC__ASSERT(true != 2);
options->prefix_with_filename = 2;
options->use_padding = true;
options->checks.num_shorthand_ops = 0;
options->checks.num_major_ops = 0;
options->checks.has_block_type = false;
options->checks.has_except_block_type = false;
options->ops.operations = 0;
options->ops.num_operations = 0;
options->ops.capacity = 0;
}
FLAC__bool parse_options(int argc, char *argv[], CommandLineOptions *options)
{
int ret;
int option_index = 1;
FLAC__bool had_error = false;
while ((ret = getopt_long(argc, argv, "", long_options_, &option_index)) != -1) {
switch (ret) {
case 0:
had_error |= !parse_option(option_index, optarg, options);
break;
case '?':
case ':':
short_usage(0);
return false;
had_error = true;
default:
FLAC__ASSERT(0);
}
}
if(options->prefix_with_filename == 2)
options->prefix_with_filename = (argc - optind > 1);
if(optind < argc) {
while(optind < argc)
printf("%s ", argv[optind++]);
printf("\n");
}
return had_error;
}
FLAC__bool parse_option(int option_index, const char *option_argument, CommandLineOptions *options)
{
const char *opt = long_options_[option_index].name;
Operation *op;
FLAC__bool ret = true;
if(0 == strcmp(opt, "preserve-modtime")) {
options->preserve_modtime = true;
}
else if(0 == strcmp(opt, "with-filename")) {
options->prefix_with_filename = true;
}
else if(0 == strcmp(opt, "no-filename")) {
options->prefix_with_filename = false;
}
else if(0 == strcmp(opt, "dont-use-padding")) {
options->use_padding = false;
}
else if(0 == strcmp(opt, "show-md5sum")) {
(void) append_shorthand_operation(options, OP__SHOW_MD5SUM);
}
else if(0 == strcmp(opt, "show-min-blocksize")) {
(void) append_shorthand_operation(options, OP__SHOW_MIN_BLOCKSIZE);
}
else if(0 == strcmp(opt, "show-max-blocksize")) {
(void) append_shorthand_operation(options, OP__SHOW_MAX_BLOCKSIZE);
}
else if(0 == strcmp(opt, "show-min-framesize")) {
(void) append_shorthand_operation(options, OP__SHOW_MIN_FRAMESIZE);
}
else if(0 == strcmp(opt, "show-max-framesize")) {
(void) append_shorthand_operation(options, OP__SHOW_MAX_FRAMESIZE);
}
else if(0 == strcmp(opt, "show-sample-rate")) {
(void) append_shorthand_operation(options, OP__SHOW_SAMPLE_RATE);
}
else if(0 == strcmp(opt, "show-channels")) {
(void) append_shorthand_operation(options, OP__SHOW_CHANNELS);
}
else if(0 == strcmp(opt, "show-bps")) {
(void) append_shorthand_operation(options, OP__SHOW_BPS);
}
else if(0 == strcmp(opt, "show-total-samples")) {
(void) append_shorthand_operation(options, OP__SHOW_TOTAL_SAMPLES);
}
else if(0 == strcmp(opt, "show-vc-vendor")) {
(void) append_shorthand_operation(options, OP__SHOW_VC_VENDOR);
}
else if(0 == strcmp(opt, "show-vc-field")) {
op = append_shorthand_operation(options, OP__SHOW_VC_FIELD);
FLAC__ASSERT(0 != option_argument);
op->argument.show_vc_field.field_name = local_strdup(option_argument);
}
else if(0 == strcmp(opt, "remove-vc-all")) {
(void) append_shorthand_operation(options, OP__REMOVE_VC_ALL);
}
else if(0 == strcmp(opt, "remove-vc-field")) {
op = append_shorthand_operation(options, OP__REMOVE_VC_FIELD);
FLAC__ASSERT(0 != option_argument);
op->argument.remove_vc_field.field_name = local_strdup(option_argument);
}
else if(0 == strcmp(opt, "remove-vc-firstfield")) {
op = append_shorthand_operation(options, OP__REMOVE_VC_FIRSTFIELD);
FLAC__ASSERT(0 != option_argument);
op->argument.remove_vc_firstfield.field_name = local_strdup(option_argument);
}
else if(0 == strcmp(opt, "set-vc-field")) {
op = append_shorthand_operation(options, OP__SET_VC_FIELD);
FLAC__ASSERT(0 != option_argument);
if(!parse_vorbis_comment_field(option_argument, &(op->argument.set_vc_field.field_name), &(op->argument.set_vc_field.field_value), &(op->argument.set_vc_field.field_value_length))) {
fprintf(stderr, "ERROR: malformed vorbis comment field \"%s\"\n", option_argument);
ret = false;
}
}
else if(0 == strcmp(opt, "help")) {
(void) append_major_operation(options, OP__HELP);
}
else if(0 == strcmp(opt, "list")) {
(void) append_major_operation(options, OP__LIST);
}
else if(0 == strcmp(opt, "append")) {
(void) append_major_operation(options, OP__APPEND);
}
else if(0 == strcmp(opt, "remove")) {
(void) append_major_operation(options, OP__REMOVE);
}
else if(0 == strcmp(opt, "remove-all")) {
(void) append_major_operation(options, OP__REMOVE_ALL);
}
else if(0 == strcmp(opt, "merge-padding")) {
(void) append_major_operation(options, OP__MERGE_PADDING);
}
else if(0 == strcmp(opt, "sort-padding")) {
(void) append_major_operation(options, OP__SORT_PADDING);
}
else if(0 == strcmp(opt, "block-number")) {
op = append_major_operation(options, OP__BLOCK_NUMBER);
FLAC__ASSERT(0 != option_argument);
if(!parse_block_number(option_argument, &(op->argument.block_number))) {
fprintf(stderr, "ERROR: malformed block number specification \"%s\"\n", option_argument);
ret = false;
}
}
else if(0 == strcmp(opt, "block-type")) {
op = append_major_operation(options, OP__BLOCK_TYPE);
FLAC__ASSERT(0 != option_argument);
if(!parse_block_type(option_argument, &(op->argument.block_type))) {
fprintf(stderr, "ERROR: malformed block type specification \"%s\"\n", option_argument);
ret = false;
}
}
else if(0 == strcmp(opt, "except-block-type")) {
op = append_major_operation(options, OP__EXCEPT_BLOCK_TYPE);
FLAC__ASSERT(0 != option_argument);
if(!parse_block_type(option_argument, &(op->argument.except_block_type))) {
fprintf(stderr, "ERROR: malformed block type specification \"%s\"\n", option_argument);
ret = false;
}
}
else if(0 == strcmp(opt, "data-format")) {
op = append_major_operation(options, OP__DATA_FORMAT);
FLAC__ASSERT(0 != option_argument);
if(!parse_data_format(option_argument, &(op->argument.data_format))) {
fprintf(stderr, "ERROR: illegal data format \"%s\"\n", option_argument);
ret = false;
}
}
else if(0 == strcmp(opt, "application-data-format")) {
op = append_major_operation(options, OP__APPLICATION_DATA_FORMAT);
FLAC__ASSERT(0 != option_argument);
if(!parse_application_data_format(option_argument, &(op->argument.application_data_format))) {
fprintf(stderr, "ERROR: illegal application data format \"%s\"\n", option_argument);
ret = false;
}
}
else if(0 == strcmp(opt, "from-file")) {
op = append_major_operation(options, OP__FROM_FILE);
FLAC__ASSERT(0 != option_argument);
op->argument.from_file.file_name = local_strdup(option_argument);
}
else {
FLAC__ASSERT(0);
}
return ret;
}
void free_options(CommandLineOptions *options)
{
unsigned i;
Operation *op;
FLAC__ASSERT(0 == options->ops.operations || options->ops.num_operations > 0);
for(i = 0; i < options->ops.num_operations; i++) {
op = options->ops.operations + i;
switch(op->type) {
case OP__SHOW_VC_FIELD:
case OP__REMOVE_VC_FIELD:
case OP__REMOVE_VC_FIRSTFIELD:
FLAC__ASSERT(0 != op->argument.show_vc_field.field_name);
free(op->argument.show_vc_field.field_name);
break;
case OP__SET_VC_FIELD:
FLAC__ASSERT(0 != op->argument.set_vc_field.field_name);
free(op->argument.set_vc_field.field_name);
if(0 != op->argument.set_vc_field.field_value)
free(op->argument.set_vc_field.field_value);
break;
case OP__BLOCK_NUMBER:
/*@@@*/
break;
case OP__BLOCK_TYPE:
case OP__EXCEPT_BLOCK_TYPE:
/*@@@*/
break;
case OP__FROM_FILE:
FLAC__ASSERT(0 != op->argument.from_file.file_name);
free(op->argument.from_file.file_name);
break;
default:
break;
}
}
if(0 != options->ops.operations)
free(options->ops.operations);
}
void append_operation(CommandLineOptions *options, Operation operation)
{
if(options->ops.capacity == 0) {
options->ops.capacity = 50;
if(0 == (options->ops.operations = malloc(sizeof(Operation) * options->ops.capacity))) {
fprintf(stderr, "ERROR: out of memory allocating space for option list\n");
exit(1);
}
memset(options->ops.operations, 0, sizeof(Operation) * options->ops.capacity);
}
if(options->ops.capacity <= options->ops.num_operations) {
unsigned original_capacity = options->ops.capacity;
options->ops.capacity *= 4;
if(0 == (options->ops.operations = realloc(options->ops.operations, sizeof(Operation) * options->ops.capacity))) {
fprintf(stderr, "ERROR: out of memory allocating space for option list\n");
exit(1);
}
memset(options->ops.operations + original_capacity, 0, sizeof(Operation) * (options->ops.capacity - original_capacity));
}
options->ops.operations[options->ops.num_operations++] = operation;
}
Operation *append_major_operation(CommandLineOptions *options, OperationType type)
{
Operation op;
op.type = type;
append_operation(options, op);
options->checks.num_major_ops++;
return options->ops.operations + (options->ops.num_operations - 1);
}
Operation *append_shorthand_operation(CommandLineOptions *options, OperationType type)
{
Operation op;
op.type = type;
append_operation(options, op);
options->checks.num_shorthand_ops++;
return options->ops.operations + (options->ops.num_operations - 1);
}
static void usage_header(FILE *out)
{
fprintf(out, "==============================================================================\n");
fprintf(out, "metaflac - Command-line FLAC metadata editor version %s\n", FLAC__VERSION_STRING);
fprintf(out, "Copyright (C) 2001,2002 Josh Coalson\n");
fprintf(out, "\n");
fprintf(out, "This program is free software; you can redistribute it and/or\n");
fprintf(out, "modify it under the terms of the GNU General Public License\n");
fprintf(out, "as published by the Free Software Foundation; either version 2\n");
fprintf(out, "of the License, or (at your option) any later version.\n");
fprintf(out, "\n");
fprintf(out, "This program is distributed in the hope that it will be useful,\n");
fprintf(out, "but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
fprintf(out, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
fprintf(out, "GNU General Public License for more details.\n");
fprintf(out, "\n");
fprintf(out, "You should have received a copy of the GNU General Public License\n");
fprintf(out, "along with this program; if not, write to the Free Software\n");
fprintf(out, "Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.\n");
fprintf(out, "==============================================================================\n");
}
static void usage_summary(FILE *out)
{
fprintf(out, "Usage:\n");
fprintf(out, " metaflac [options] [operations] FLACfile [FLACfile ...]\n");
fprintf(out, "\n");
fprintf(out, "Use metaflac to list, add, remove, or edit metadata in one or more FLAC files.\n");
fprintf(out, "You may perform one major operation, or many shorthand operations at a time.\n");
fprintf(out, "\n");
fprintf(out, "Options:\n");
fprintf(out, "--preserve-modtime Preserve the original modification time in spite of edits\n");
fprintf(out, "--with-filename Prefix each output line with the FLAC file name\n");
fprintf(out, " (the default if more than one FLAC file is specified)\n");
fprintf(out, "--no-filename Do not prefix each output line with the FLAC file name\n");
fprintf(out, " (the default if only one FLAC file is specified)\n");
fprintf(out, "--dont-use-padding By default metaflac tries to use padding where possible\n");
fprintf(out, " to avoid rewriting the entire file if the metadata size\n");
fprintf(out, " changes. Use this option to tell metaflac to not use\n");
fprintf(out, " padding at all.\n");
}
int short_usage(const char *message, ...)
{
va_list args;
if(message) {
va_start(args, message);
(void) vfprintf(stderr, message, args);
va_end(args);
}
usage_header(stderr);
fprintf(stderr, "\n");
fprintf(stderr, "This is the short help; for full help use 'metaflac --help'\n");
fprintf(stderr, "\n");
usage_summary(stderr);
return message? 1 : 0;
}
int long_usage(const char *message, ...)
{
FILE *out = (message? stderr : stdout);
va_list args;
if(message) {
va_start(args, message);
(void) vfprintf(stderr, message, args);
va_end(args);
}
usage_header(out);
fprintf(out, "\n");
usage_summary(out);
fprintf(out, "\n");
fprintf(out, "Shorthand operations:\n");
fprintf(out, "--show-md5sum Show the MD5 signature from the STREAMINFO block.\n");
fprintf(out, "--show-min-blocksize Show the minimum block size from the STREAMINFO block.\n");
fprintf(out, "--show-max-blocksize Show the maximum block size from the STREAMINFO block.\n");
fprintf(out, "--show-min-framesize Show the minimum frame size from the STREAMINFO block.\n");
fprintf(out, "--show-max-framesize Show the maximum frame size from the STREAMINFO block.\n");
fprintf(out, "--show-sample-rate Show the sample rate from the STREAMINFO block.\n");
fprintf(out, "--show-channels Show the number of channels from the STREAMINFO block.\n");
fprintf(out, "--show-bps Show the # of bits per sample from the STREAMINFO block.\n");
fprintf(out, "--show-total-samples Show the total # of samples from the STREAMINFO block.\n");
fprintf(out, "\n");
fprintf(out, "--show-vc-vendor Show the vendor string from the VORBIS_COMMENT block.\n");
fprintf(out, "--show-vc-field=name Show all Vorbis comment fields where the the field name\n");
fprintf(out, " matches 'name'.\n");
fprintf(out, "--remove-vc-field=name\n");
fprintf(out, " Remove all Vorbis comment fields whose field name is\n");
fprintf(out, " 'name'.\n");
fprintf(out, "--remove-vc-firstfield=name\n");
fprintf(out, " Remove first Vorbis comment field whose field name is\n");
fprintf(out, " 'name'.\n");
fprintf(out, "--remove-vc-all Remove all Vorbis comment fields, leaving only the\n");
fprintf(out, " vendor string in the VORBIS_COMMENT block.\n");
fprintf(out, "--set-vc-field=field Add a Vorbis comment field. The field must comply with\n");
fprintf(out, " the Vorbis comment spec, of the form \"NAME=VALUE\". If\n");
fprintf(out, " there is currently no VORBIS_COMMENT block, one will be\n");
fprintf(out, " created.\n");
fprintf(out, "\n");
fprintf(out, "Major operations:\n");
fprintf(out, "--list : List the contents of one or more metadata blocks to stdout. By\n");
fprintf(out, " default, all metadata blocks are listed in text format. Use the\n");
fprintf(out, " following options to change this behavior:\n");
fprintf(out, "\n");
fprintf(out, " --block-number=#[,#[...]]\n");
fprintf(out, " An optional comma-separated list of block numbers to display. The first\n");
fprintf(out, " block, the STREAMINFO block, is block 0.\n");
fprintf(out, "\n");
fprintf(out, " --block-type=type[,type[...]]\n");
fprintf(out, " --except-block-type=type[,type[...]]\n");
fprintf(out, " An optional comma-separated list of block types to included or ignored\n");
fprintf(out, " with this option. Use only one of --block-type or --except-block-type.\n");
fprintf(out, " The valid block types are: STREAMINFO, PADDING, APPLICATION, SEEKTABLE,\n");
fprintf(out, " VORBIS_COMMENT. You may narrow down the types of APPLICATION blocks\n");
fprintf(out, " displayed as follows:\n");
fprintf(out, " APPLICATION:abcd The APPLICATION block(s) whose textual repre-\n");
fprintf(out, " sentation of the 4-byte ID is \"abcd\"\n");
fprintf(out, " APPLICATION:0xXXXXXXXX The APPLICATION block(s) whose hexadecimal big-\n");
fprintf(out, " endian representation of the 4-byte ID is\n");
fprintf(out, " \"0xXXXXXXXX\". For the example \"abcd\" above the\n");
fprintf(out, " hexadecimal equivalalent is 0x61626364\n");
fprintf(out, "\n");
fprintf(out, " NOTE: if both --block-number and --[except-]block-type are specified,\n");
fprintf(out, " the result is the logical AND of both arguments.\n");
fprintf(out, "\n");
#if 0
/*@@@ not implemented yet */
fprintf(out, " --data-format=binary|text\n");
fprintf(out, " By default a human-readable text representation of the data is displayed.\n");
fprintf(out, " You may specify --data-format=binary to dump the raw binary form of each\n");
fprintf(out, " metadata block. The output can be read in using a subsequent call to\n");
fprintf(out, " "metaflac --append --from-file=..."\n");
#endif
fprintf(out, "\n");
fprintf(out, " --application-data-format=hexdump|text\n");
fprintf(out, " If the application block you are displaying contains binary data but your\n");
fprintf(out, " --data-format=text, you can display a hex dump of the application data\n");
fprintf(out, " contents instead using --application-data-format=hexdump\n");
fprintf(out, "\n");
#if 0
/*@@@ not implemented yet */
fprintf(out, "--append : Insert a metadata block from a file. The input file must be in the\n");
fprintf(out, " same format as generated with --list.\n");
fprintf(out, "\n");
fprintf(out, " --block-number=#\n");
fprintf(out, " Specify the insertion point (defaults to last block). The new block will\n");
fprintf(out, " be added after the given block number. This prevents the illegal insertion\n");
fprintf(out, " of a block before the first STREAMINFO block. You may not --append another\n");
fprintf(out, " STREAMINFO block.\n");
fprintf(out, "\n");
fprintf(out, " --from-file=filename\n");
fprintf(out, " Mandatory 'option' to specify the input file containing the block contents.\n");
fprintf(out, "\n");
fprintf(out, " --data-format=binary|text\n");
fprintf(out, " By default the block contents are assumed to be in binary format. You can\n");
fprintf(out, " override this by specifying --data-format=text\n");
fprintf(out, "\n");
#endif
fprintf(out, "--remove : Remove one or more metadata blocks from the metadata. Unless\n");
fprintf(out, " --dont-use-padding is specified, the blocks will be replaced with\n");
fprintf(out, " padding. You may not remove the STREAMINFO block.\n");
fprintf(out, "\n");
fprintf(out, " --block-number=#[,#[...]]\n");
fprintf(out, " --block-type=type[,type[...]]\n");
fprintf(out, " --except-block-type=type[,type[...]]\n");
fprintf(out, " See --list above for usage.\n");
fprintf(out, "\n");
fprintf(out, " NOTE: if both --block-number and --[except-]block-type are specified,\n");
fprintf(out, " the result is the logical AND of both arguments.\n");
fprintf(out, "\n");
fprintf(out, "--remove-all : Remove all metadata blocks (except the STREAMINFO block) from\n");
fprintf(out, " the metadata. Unless --dont-use-padding is specified, the\n");
fprintf(out, " blocks will be replaced with padding.\n");
fprintf(out, "\n");
fprintf(out, "--merge-padding : Merge adjacent PADDING blocks into single blocks.\n");
fprintf(out, "\n");
fprintf(out, "--sort-padding : Move all PADDING blocks to the end of the metadata and merge\n");
fprintf(out, " them into a single block.\n");
return message? 1 : 0;
}
void hexdump(const FLAC__byte *buf, unsigned bytes, const char *indent)
{
unsigned i, left = bytes;
const FLAC__byte *b = buf;
for(i = 0; i < bytes; i += 16) {
printf("%s%08X: "
"%02X %02X %02X %02X %02X %02X %02X %02X "
"%02X %02X %02X %02X %02X %02X %02X %02X "
"%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",
indent, i,
left > 0? (unsigned char)b[ 0] : 0,
left > 1? (unsigned char)b[ 1] : 0,
left > 2? (unsigned char)b[ 2] : 0,
left > 3? (unsigned char)b[ 3] : 0,
left > 4? (unsigned char)b[ 4] : 0,
left > 5? (unsigned char)b[ 5] : 0,
left > 6? (unsigned char)b[ 6] : 0,
left > 7? (unsigned char)b[ 7] : 0,
left > 8? (unsigned char)b[ 8] : 0,
left > 9? (unsigned char)b[ 9] : 0,
left > 10? (unsigned char)b[10] : 0,
left > 11? (unsigned char)b[11] : 0,
left > 12? (unsigned char)b[12] : 0,
left > 13? (unsigned char)b[13] : 0,
left > 14? (unsigned char)b[14] : 0,
left > 15? (unsigned char)b[15] : 0,
(left > 0) ? (isprint(b[ 0]) ? b[ 0] : '.') : ' ',
(left > 1) ? (isprint(b[ 1]) ? b[ 1] : '.') : ' ',
(left > 2) ? (isprint(b[ 2]) ? b[ 2] : '.') : ' ',
(left > 3) ? (isprint(b[ 3]) ? b[ 3] : '.') : ' ',
(left > 4) ? (isprint(b[ 4]) ? b[ 4] : '.') : ' ',
(left > 5) ? (isprint(b[ 5]) ? b[ 5] : '.') : ' ',
(left > 6) ? (isprint(b[ 6]) ? b[ 6] : '.') : ' ',
(left > 7) ? (isprint(b[ 7]) ? b[ 7] : '.') : ' ',
(left > 8) ? (isprint(b[ 8]) ? b[ 8] : '.') : ' ',
(left > 9) ? (isprint(b[ 9]) ? b[ 9] : '.') : ' ',
(left > 10) ? (isprint(b[10]) ? b[10] : '.') : ' ',
(left > 11) ? (isprint(b[11]) ? b[11] : '.') : ' ',
(left > 12) ? (isprint(b[12]) ? b[12] : '.') : ' ',
(left > 13) ? (isprint(b[13]) ? b[13] : '.') : ' ',
(left > 14) ? (isprint(b[14]) ? b[14] : '.') : ' ',
(left > 15) ? (isprint(b[15]) ? b[15] : '.') : ' '
);
left -= 16;
b += 16;
}
}
char *local_strdup(const char *source)
{
char *ret;
FLAC__ASSERT(0 != source);
if(0 == (ret = strdup(source))) {
fprintf(stderr, "ERROR: out of memory during strdup()\n");
exit(1);
}
return ret;
}
FLAC__bool parse_vorbis_comment_field(const char *field, char **name, char **value, unsigned *length)
{
char *p, *s = local_strdup(field);
if(0 == (p = strchr(s, '='))) {
free(s);
return false;
}
*p++ = '\0';
*name = local_strdup(s);
*value = local_strdup(p);
*length = strlen(p);
free(s);
return true;
}
FLAC__bool parse_block_number(const char *in, Argument_BlockNumber *out)
{
char *p, *q, *s;
int i;
unsigned entry;
if(*in == '\0')
return false;
s = local_strdup(in);
/* first count the entries */
for(out->num_entries = 1, p = strchr(s, ','); p; out->num_entries++, p = strchr(s, ','))
;
/* make space */
FLAC__ASSERT(out->num_entries > 0);
if(0 == (out->entries = malloc(sizeof(unsigned) * out->num_entries))) {
fprintf(stderr, "ERROR: out of memory allocating space for option list\n");
exit(1);
}
/* load 'em up */
entry = 0;
q = s;
while(q) {
if(0 != (p = strchr(q, ',')))
*p++ = 0;
if(!isdigit((int)(*q)) || (i = atoi(q)) < 0) {
free(s);
return false;
}
FLAC__ASSERT(entry < out->num_entries);
out->entries[entry++] = (unsigned)i;
q = p;
}
FLAC__ASSERT(entry == out->num_entries);
free(s);
return true;
}
FLAC__bool parse_block_type(const char *in, Argument_BlockType *out)
{
return true;
}
FLAC__bool parse_data_format(const char *in, Argument_DataFormat *out)
{
if(0 == strcmp(in, "binary"))
out->is_binary = true;
else if(0 == strcmp(in, "text"))
out->is_binary = false;
else
return false;
return true;
}
FLAC__bool parse_application_data_format(const char *in, Argument_ApplicationDataFormat *out)
{
if(0 == strcmp(in, "hexdump"))
out->is_hexdump = true;
else if(0 == strcmp(in, "text"))
out->is_hexdump = false;
else
return false;
return true;
}
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