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Diffstat (limited to 'source-builder/sb/asciidoc/filters/music/music2png.py')
| -rwxr-xr-x | source-builder/sb/asciidoc/filters/music/music2png.py | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/source-builder/sb/asciidoc/filters/music/music2png.py b/source-builder/sb/asciidoc/filters/music/music2png.py deleted file mode 100755 index a0224df..0000000 --- a/source-builder/sb/asciidoc/filters/music/music2png.py +++ /dev/null @@ -1,213 +0,0 @@ -#!/usr/bin/env python -''' -NAME - music2png - Converts textual music notation to classically notated PNG file - -SYNOPSIS - music2png [options] INFILE - -DESCRIPTION - This filter reads LilyPond or ABC music notation text from the input file - INFILE (or stdin if INFILE is -), converts it to classical music notation - and writes it to a trimmed PNG image file. - - This script is a wrapper for LilyPond and ImageMagick commands. - -OPTIONS - -f FORMAT - The INFILE music format. 'abc' for ABC notation, 'ly' for LilyPond - notation. Defaults to 'abc' unless source starts with backslash. - - -o OUTFILE - The file name of the output file. If not specified the output file is - named like INFILE but with a .png file name extension. - - -m - Skip if the PNG output file is newer that than the INFILE. - Compares timestamps on INFILE and OUTFILE. If - INFILE is - (stdin) then compares MD5 checksum stored in file - named like OUTFILE but with a .md5 file name extension. - The .md5 file is created if the -m option is used and the - INFILE is - (stdin). - - -v - Verbosely print processing information to stderr. - - --help, -h - Print this documentation. - - --version - Print program version number. - -SEE ALSO - lilypond(1), abc2ly(1), convert(1) - -AUTHOR - Written by Stuart Rackham, <srackham@gmail.com> - -COPYING - Copyright (C) 2006 Stuart Rackham. Free use of this software is - granted under the terms of the GNU General Public License (GPL). -''' - -# Suppress warning: "the md5 module is deprecated; use hashlib instead" -import warnings -warnings.simplefilter('ignore',DeprecationWarning) - -import os, sys, tempfile, md5 - -VERSION = '0.1.2' - -# Globals. -verbose = False - -class EApp(Exception): pass # Application specific exception. - -def print_stderr(line): - sys.stderr.write(line + os.linesep) - -def print_verbose(line): - if verbose: - print_stderr(line) - -def write_file(filename, data, mode='w'): - f = open(filename, mode) - try: - f.write(data) - finally: - f.close() - -def read_file(filename, mode='r'): - f = open(filename, mode) - try: - return f.read() - finally: - f.close() - -def run(cmd): - global verbose - if not verbose: - cmd += ' 2>%s' % os.devnull - print_verbose('executing: %s' % cmd) - if os.system(cmd): - raise EApp, 'failed command: %s' % cmd - -def music2png(format, infile, outfile, modified): - '''Convert ABC notation in file infile to cropped PNG file named outfile.''' - outfile = os.path.abspath(outfile) - outdir = os.path.dirname(outfile) - if not os.path.isdir(outdir): - raise EApp, 'directory does not exist: %s' % outdir - basefile = tempfile.mktemp(dir=os.path.dirname(outfile)) - temps = [basefile + ext for ext in ('.abc', '.ly', '.ps', '.midi')] - skip = False - if infile == '-': - source = sys.stdin.read() - checksum = md5.new(source).digest() - filename = os.path.splitext(outfile)[0] + '.md5' - if modified: - if os.path.isfile(filename) and os.path.isfile(outfile) and \ - checksum == read_file(filename,'rb'): - skip = True - else: - write_file(filename, checksum, 'wb') - else: - if not os.path.isfile(infile): - raise EApp, 'input file does not exist: %s' % infile - if modified and os.path.isfile(outfile) and \ - os.path.getmtime(infile) <= os.path.getmtime(outfile): - skip = True - source = read_file(infile) - if skip: - print_verbose('skipped: no change: %s' % outfile) - return - if format is None: - if source and source.startswith('\\'): # Guess input format. - format = 'ly' - else: - format = 'abc' - # Write temporary source file. - write_file('%s.%s' % (basefile,format), source) - abc = basefile + '.abc' - ly = basefile + '.ly' - png = basefile + '.png' - saved_pwd = os.getcwd() - os.chdir(outdir) - try: - if format == 'abc': - run('abc2ly -o "%s" "%s"' % (ly,abc)) - run('lilypond --png -o "%s" "%s"' % (basefile,ly)) - os.rename(png, outfile) - finally: - os.chdir(saved_pwd) - # Chop the bottom 75 pixels off to get rid of the page footer then crop the - # music image. The -strip option necessary because FOP does not like the - # custom PNG color profile used by Lilypond. - run('convert "%s" -strip -gravity South -chop 0x75 -trim "%s"' % (outfile, outfile)) - for f in temps: - if os.path.isfile(f): - print_verbose('deleting: %s' % f) - os.remove(f) - -def usage(msg=''): - if msg: - print_stderr(msg) - print_stderr('\n' - 'usage:\n' - ' music2png [options] INFILE\n' - '\n' - 'options:\n' - ' -f FORMAT\n' - ' -o OUTFILE\n' - ' -m\n' - ' -v\n' - ' --help\n' - ' --version') - -def main(): - # Process command line options. - global verbose - format = None - outfile = None - modified = False - import getopt - opts,args = getopt.getopt(sys.argv[1:], 'f:o:mhv', ['help','version']) - for o,v in opts: - if o in ('--help','-h'): - print __doc__ - sys.exit(0) - if o =='--version': - print('music2png version %s' % (VERSION,)) - sys.exit(0) - if o == '-f': format = v - if o == '-o': outfile = v - if o == '-m': modified = True - if o == '-v': verbose = True - if len(args) != 1: - usage() - sys.exit(1) - infile = args[0] - if format not in (None, 'abc', 'ly'): - usage('invalid FORMAT') - sys.exit(1) - if outfile is None: - if infile == '-': - usage('OUTFILE must be specified') - sys.exit(1) - outfile = os.path.splitext(infile)[0] + '.png' - # Do the work. - music2png(format, infile, outfile, modified) - # Print something to suppress asciidoc 'no output from filter' warnings. - if infile == '-': - sys.stdout.write(' ') - -if __name__ == "__main__": - try: - main() - except SystemExit: - raise - except KeyboardInterrupt: - sys.exit(1) - except Exception, e: - print_stderr("%s: %s" % (os.path.basename(sys.argv[0]), str(e))) - sys.exit(1) |