mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-09 18:31:04 +00:00
186 lines
8.0 KiB
Python
186 lines
8.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
# file docbook_copy.py
|
|
# This file is part of LyX, the document processor.
|
|
# Licence details can be found in the file COPYING.
|
|
#
|
|
# \author Thibaut Cuvelier
|
|
#
|
|
# Full author contact details are available in file CREDITS
|
|
|
|
# Usage:
|
|
# python docbook_copy.py lilypond_book_command in.docbook out.docbook
|
|
# This script copies the original DocBook file (directly produced by LyX) to the output DocBook file,
|
|
# potentially applying a post-processing step. For now, the only implemented post-processing step is
|
|
# LilyPond.
|
|
# lilypond_book_command is either directly the binary to call OR the equivalent Python script that is
|
|
# not directly executable.
|
|
# /!\ The original file may be modified by this script!
|
|
|
|
|
|
import subprocess
|
|
import os
|
|
import os.path
|
|
import re
|
|
import shutil
|
|
import sys
|
|
|
|
|
|
class DocBookCopier:
|
|
def __init__(self, args):
|
|
|
|
# Parse the command line.
|
|
self.lilypond_command = args[1]
|
|
self.in_file = args[2]
|
|
self.out_file = args[3]
|
|
|
|
# Compute a few things from the raw parameters.
|
|
self.in_folder = os.path.split(self.in_file)[0]
|
|
self.out_folder = os.path.split(self.out_file)[0]
|
|
|
|
self.in_lily_file = self.in_file.replace('.xml', '.lyxml')
|
|
self.has_lilypond = self.lilypond_command not in {'', 'none'}
|
|
self.lilypond_folder = os.path.split(self.lilypond_command)[0] if self.has_lilypond else ''
|
|
self.do_lilypond_processing = self.has_lilypond and self.in_file_needs_lilypond()
|
|
|
|
# Help debugging.
|
|
print('>> Given arguments:')
|
|
print('>> LilyPond: ' + ('present' if self.has_lilypond else 'not found') + '.')
|
|
print('>> LilyPond callable as: ' + self.lilypond_command + '.')
|
|
print('>> LilyPond path: ' + self.lilypond_folder + '.')
|
|
print('>> Input file: ' + self.in_file + '.')
|
|
print('>> Output file: ' + self.out_file + '.')
|
|
print('>> Input folder: ' + self.in_folder + '.')
|
|
print('>> Output folder: ' + self.out_folder + '.')
|
|
|
|
def in_file_needs_lilypond(self):
|
|
# Really tailored to the kind of output lilypond.module makes (in lib/layouts).
|
|
with open(self.in_file, 'r') as f:
|
|
return "language='lilypond'" in f.read()
|
|
|
|
def preprocess_input_for_lilypond(self):
|
|
# LilyPond requires that its input file has the .lyxml extension. Due to a bug in LilyPond,
|
|
# use " instead of ' to encode XML attributes.
|
|
# Bug report: https://gitlab.com/lilypond/lilypond/-/issues/6185
|
|
# Typical transformation:
|
|
# Fixed by 2.23.4.
|
|
# FROM: language='lilypond' role='fragment verbatim staffsize=16 ragged-right relative=2'
|
|
# TO: language="lilypond" role="fragment verbatim staffsize=16 ragged-right relative=2"
|
|
|
|
# Another problem to fix: the output is in XML, with some characters encoded as XML
|
|
# entities. For instance, this could be in a LilyPond snippet:
|
|
# \new PianoStaff <<
|
|
# instead of:
|
|
# \new PianoStaff <<
|
|
# (More complete example:
|
|
# https://lilypond.org/doc/v2.23/Documentation/learning/piano-centered-lyrics.)
|
|
# This issue must be fixed by LilyPond, as any change in this part would make the XML
|
|
# file invalid.
|
|
# Bug report: https://gitlab.com/lilypond/lilypond/-/issues/6204
|
|
with open(self.in_file, 'r', encoding='utf-8') as f, open(self.in_lily_file, 'w', encoding='utf-8') as f_lily:
|
|
for line in f:
|
|
if "language='lilypond'" in line:
|
|
line = re.sub(
|
|
'<programlisting\\s+language=\'lilypond\'.*?(role=\'(?P<options>.*?)\')?>',
|
|
'<programlisting language="lilypond" role="\\g<options>">',
|
|
line
|
|
)
|
|
f_lily.write(line)
|
|
os.unlink(self.in_file)
|
|
|
|
def postprocess_output_for_lilypond(self):
|
|
# Major problem: LilyPond used to output the LilyPond code outside the image, which is then always displayed
|
|
# before the image (instead of only the generated image).
|
|
# Bug report: https://gitlab.com/lilypond/lilypond/-/issues/6186
|
|
# No more necessary with the new version of LilyPond (2.23.4). No efficient way to decide how to post-process
|
|
# for previous versions of LilyPond. Basically, it does not make sense to post-process.
|
|
pass
|
|
|
|
def call_lilypond(self):
|
|
# LilyPond requires that its input file has the .lyxml extension (plus bugs in LilyPond).
|
|
print('>> Rewriting ' + self.in_file)
|
|
print('>> as ' + self.in_lily_file + '.')
|
|
self.preprocess_input_for_lilypond()
|
|
|
|
# Add LilyPond to the PATH. lilypond-book uses a direct call to lilypond from the PATH.
|
|
if os.path.isdir(self.lilypond_folder):
|
|
os.environ['PATH'] += os.pathsep + self.lilypond_folder
|
|
|
|
# Make LilyPond believe it is working from the temporary LyX directory. Otherwise, it tries to find files
|
|
# starting from LyX's working directory... LilyPond bug, most likely.
|
|
# https://lists.gnu.org/archive/html/bug-lilypond/2021-09/msg00041.html
|
|
os.chdir(self.in_folder)
|
|
|
|
# Start LilyPond on the copied file. First test the binary, then check if adding Python helps.
|
|
command_args = ['--format=docbook', '--output=' + self.in_folder, self.in_lily_file]
|
|
command_raw = [self.lilypond_command] + command_args
|
|
command_python = ['python', self.lilypond_command] + command_args
|
|
|
|
print('>> Running LilyPond.')
|
|
sys.stdout.flush() # So that the LilyPond output is at the right place in the logs.
|
|
|
|
failed = True
|
|
exceptions = []
|
|
for cmd in [command_raw, command_python]:
|
|
try:
|
|
subprocess.check_call(cmd, stdout=sys.stdout.fileno(), stderr=sys.stdout.fileno())
|
|
print('>> Success running LilyPond with ')
|
|
print('>> ' + str(cmd))
|
|
failed = False
|
|
except (subprocess.CalledProcessError, OSError) as e:
|
|
exceptions.append((cmd, e))
|
|
|
|
if failed:
|
|
print('>> Error from LilyPond. The successive calls were:')
|
|
for (i, pair) in enumerate(exceptions):
|
|
exc = pair[0]
|
|
cmd = pair[1]
|
|
|
|
print('>> (' + i + ') Error from trying ' + str(cmd) + ':')
|
|
print('>> (' + i + ') ' + str(exc))
|
|
|
|
if failed:
|
|
sys.exit(1)
|
|
|
|
# LilyPond has a distressing tendency to leave the raw LilyPond code in the new file.
|
|
self.postprocess_output_for_lilypond()
|
|
|
|
# Now, in_file should have the clean LilyPond-processed contents.
|
|
|
|
def copy_lilypond_generated_images(self):
|
|
# LilyPond generates a lot of files in LyX' temporary folder, within the ff folder: source LilyPond files
|
|
# for each snippet to render, images in several formats.
|
|
in_generated_images_folder = os.path.join(self.in_folder, 'ff')
|
|
out_generated_images_folder = os.path.join(self.out_folder, 'ff')
|
|
|
|
if not os.path.isdir(out_generated_images_folder):
|
|
os.mkdir(out_generated_images_folder)
|
|
|
|
for img in os.listdir(in_generated_images_folder):
|
|
if not img.endswith('.png') and not img.endswith('.pdf'):
|
|
continue
|
|
|
|
shutil.copyfile(
|
|
os.path.join(in_generated_images_folder, img),
|
|
os.path.join(out_generated_images_folder, img),
|
|
)
|
|
|
|
def copy(self):
|
|
# Apply LilyPond to the original file if available and needed.
|
|
if self.do_lilypond_processing:
|
|
print('>> The input file needs a LilyPond pass and LilyPond is available.')
|
|
self.call_lilypond()
|
|
|
|
# Perform the actual copy: both the modified XML file and the generated images, if LilyPond is used.
|
|
shutil.copyfile(self.in_file, self.out_file)
|
|
if self.do_lilypond_processing:
|
|
self.copy_lilypond_generated_images()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
if len(sys.argv) != 4:
|
|
print('Exactly four arguments are expected, only %s found: %s.' % (len(sys.argv), sys.argv))
|
|
sys.exit(1)
|
|
|
|
DocBookCopier(sys.argv).copy()
|