Engine for LaTeX songbooks http://www.patacrep.com
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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
"""Command line tool to compile songbooks using the songbook library."""
import argparse
import json
import locale
import logging
import os.path
import textwrap
import sys
from patacrep.build import SongbookBuilder, DEFAULT_STEPS
from patacrep import __STR_VERSION__
from patacrep import errors
from patacrep import encoding
# Logging configuration
logging.basicConfig(level=logging.INFO)
LOGGER = logging.getLogger()
# pylint: disable=too-few-public-methods
class ParseStepsAction(argparse.Action):
"""Argparse action to split a string into a list."""
def __call__(self, __parser, namespace, values, __option_string=None):
if not getattr(namespace, self.dest):
setattr(namespace, self.dest, [])
setattr(
namespace,
self.dest,
(
getattr(namespace, self.dest)
+ [value.strip() for value in values[0].split(',')]
),
)
class VerboseAction(argparse.Action):
"""Set verbosity level with option --verbose."""
def __call__(self, *_args, **_kwargs):
LOGGER.setLevel(logging.DEBUG)
def argument_parser(args):
"""Parse arguments"""
parser = argparse.ArgumentParser(description="A song book compiler")
parser.add_argument('--version', help='Show version', action='version',
version='%(prog)s ' + __STR_VERSION__)
parser.add_argument('book', nargs=1, help=textwrap.dedent("""\
Book to compile.
"""))
parser.add_argument('--datadir', '-d', nargs='+', type=str, action='append',
help=textwrap.dedent("""\
Data location. Expected (not necessarily required)
subdirectories are 'songs', 'img', 'latex', 'templates'.
"""))
parser.add_argument('--verbose', '-v', nargs=0, action=VerboseAction,
help=textwrap.dedent("""\
Show details about the compilation process.
"""))
parser.add_argument('--steps', '-s', nargs=1, type=str,
action=ParseStepsAction,
help=textwrap.dedent("""\
Steps to run. Default is "{steps}".
Available steps are:
"tex" produce .tex file from templates;
"pdf" compile .tex file;
"sbx" compile index files;
"clean" remove temporary files;
any string beginning with '%%' (in this case, it will be run
in a shell). Several steps (excepted the custom shell
command) can be combinend in one --steps argument, as a
comma separated string.
""".format(steps=','.join(DEFAULT_STEPS))),
default=None,
)
options = parser.parse_args(args)
return options
def main():
"""Main function:"""
# set script locale to match user's
try:
locale.setlocale(locale.LC_ALL, '')
except locale.Error as error:
# Locale is not installed on user's system, or wrongly configured.
sys.stderr.write("Locale error: {}\n".format(error.message))
options = argument_parser(sys.argv[1:])
songbook_path = options.book[0]
basename = os.path.basename(songbook_path)[:-3]
songbook_file = None
try:
songbook_file = encoding.open_read(songbook_path)
songbook = json.load(songbook_file)
except Exception as error: # pylint: disable=broad-except
LOGGER.error(error)
LOGGER.error("Error while loading file '{}'.".format(songbook_path))
sys.exit(1)
finally:
if songbook_file:
songbook_file.close()
# Gathering datadirs
datadirs = []
if options.datadir:
# Command line options
datadirs += [item[0] for item in options.datadir]
if 'datadir' in songbook:
# .sg file
if isinstance(songbook['datadir'], basestring):
songbook['datadir'] = [songbook['datadir']]
datadirs += [
os.path.join(
os.path.dirname(os.path.abspath(songbook_path)),
path
)
for path in songbook['datadir']
]
# Default value
datadirs.append(os.path.dirname(os.path.abspath(songbook_path)))
songbook['datadir'] = datadirs
try:
sb_builder = SongbookBuilder(songbook, basename)
sb_builder.unsafe = True
sb_builder.build_steps(options.steps)
except errors.SongbookError as error:
LOGGER.error(error)
if LOGGER.level >= logging.INFO:
LOGGER.error(
"Running again with option '-v' may give more information."
)
sys.exit(1)
sys.exit(0)
if __name__ == '__main__':
main()