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/* metaflac - Command-line FLAC metadata editor
* Copyright (C) 2001,2002,2003 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.
*/
#include "usage.h"
#include "FLAC/format.h"
#include <stdarg.h>
#include <stdio.h>
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) 2001,2002,2003 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, "--no-utf8-convert Do not convert Vorbis comments from UTF-8 to local charset,\n");
fprintf(out, " or vice versa. This is useful for scripts.\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 take\n");
fprintf(out, " advantage of padding this way.\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 Remove all Vorbis comment fields whose field name\n");
fprintf(out, " is 'name'.\n");
fprintf(out, "--remove-vc-firstfield=name Remove first Vorbis comment field whose field\n");
fprintf(out, " name is '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, "--import-vc-from=file Import Vorbis comments from a file. Use '-' for stdin.\n");
fprintf(out, " Each line should be of the form NAME=VALUE. Multi-\n");
fprintf(out, " line comments are currently not supported. Specify\n");
fprintf(out, " --remove-vc-all and/or --no-utf8-convert before\n");
fprintf(out, " --import-vc-from if necessary.\n");
fprintf(out, "--export-vc-to=file Export Vorbis comments to a file. Use '-' for stdin.\n");
fprintf(out, " Each line will be of the form NAME=VALUE. Specify\n");
fprintf(out, " --no-utf8-convert if necessary.\n");
fprintf(out, "--import-cuesheet-from=file Import a cuesheet from a file. Only one FLAC\n");
fprintf(out, " file may be specified. A seekpoint will be added for\n");
fprintf(out, " each index point in the cuesheet to the SEEKTABLE unless\n");
fprintf(out, " --no-cued-seekpoints is specified.\n");
fprintf(out, "--export-cuesheet-to=file Export CUESHEET block to a cuesheet file, suitable\n");
fprintf(out, " for use by CD authoring software. Use '-' for stdin.\n");
fprintf(out, " Only one FLAC file may be specified on the command line.\n");
fprintf(out, "--add-replay-gain Calculates the title and album gains/peaks of the given\n");
fprintf(out, " FLAC files as if all the files were part of one album,\n");
fprintf(out, " then stores them in the VORBIS_COMMENT block. The tags\n");
fprintf(out, " are the same as those used by vorbisgain. Existing\n");
fprintf(out, " ReplayGain tags will be replaced. If only one FLAC file\n");
fprintf(out, " is given, the album and title gains will be the same.\n");
fprintf(out, " Since this operation requires two passes, it is always\n");
fprintf(out, " executed last, after all other operations have been\n");
fprintf(out, " completed and written to disk. All FLAC files specified\n");
fprintf(out, " must have the same resolution, sample rate, and number\n");
fprintf(out, " of channels. The sample rate must be one of 8, 11.025,\n");
fprintf(out, " 12, 16, 22.05, 24, 32, 44.1, or 48 kHz.\n");
fprintf(out, "--add-seekpoint={#|X|#x|#s} Add seek points to a SEEKTABLE block\n");
fprintf(out, " # : a specific sample number for a seek point\n");
fprintf(out, " X : a placeholder point (always goes at the end of the SEEKTABLE)\n");
fprintf(out, " #x : # evenly spaced seekpoints, the first being at sample 0\n");
fprintf(out, " #s : a seekpoint every # seconds; # does not have to be a whole number\n");
fprintf(out, " If no SEEKTABLE block exists, one will be created. If\n");
fprintf(out, " one already exists, points will be added to the existing\n");
fprintf(out, " table, and any duplicates will be turned into placeholder\n");
fprintf(out, " points. You may use many --add-seekpoint options; the\n");
fprintf(out, " resulting SEEKTABLE will be the unique-ified union of\n");
fprintf(out, " all such values. Example: --add-seekpoint=100x\n");
fprintf(out, " --add-seekpoint=3.5s will add 100 evenly spaced\n");
fprintf(out, " seekpoints and a seekpoint every 3.5 seconds.\n");
fprintf(out, "--add-padding=length Add a padding block of the given length (in bytes).\n");
fprintf(out, " The overall length of the new block will be 4 + length;\n");
fprintf(out, " the extra 4 bytes is for the metadata block header.\n");
fprintf(out, "\n");
fprintf(out, "Major operations:\n");
fprintf(out, "--version\n");
fprintf(out, " Show the metaflac version number.\n");
fprintf(out, "--list\n");
fprintf(out, " List the contents of one or more metadata blocks to stdout. By default,\n");
fprintf(out, " all metadata blocks are listed in text format. Use the following options\n");
fprintf(out, " 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");
fprintf(out, "\n");
#endif
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\n");
fprintf(out, " Insert a metadata block from a file. The input file must be in the same\n");
fprintf(out, " 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\n");
fprintf(out, " Remove one or more metadata blocks from the metadata. Unless\n");
fprintf(out, " --dont-use-padding is specified, the blocks will be replaced with padding.\n");
fprintf(out, " 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\n");
fprintf(out, " Remove all metadata blocks (except the STREAMINFO block) from the\n");
fprintf(out, " metadata. Unless --dont-use-padding is specified, the blocks will be\n");
fprintf(out, " replaced with padding.\n");
fprintf(out, "\n");
fprintf(out, "--merge-padding\n");
fprintf(out, " Merge adjacent PADDING blocks into single blocks.\n");
fprintf(out, "\n");
fprintf(out, "--sort-padding\n");
fprintf(out, " Move all PADDING blocks to the end of the metadata and merge them into a\n");
fprintf(out, " single block.\n");
return message? 1 : 0;
}
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