lyx_mirror/lib/scripts/lyxpak.py
José Matos 04ecabef60 Update Python scripts to Python 3+
Remove support for Python 2

Use formatted strings where appropriated
2024-06-10 11:29:56 +01:00

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# file lyxpak.py
# This file is part of LyX, the document processor.
# Licence details can be found in the file COPYING.
# author Enrico Forestieri
# author Richard Kimberly Heck
# Full author contact details are available in file CREDITS
# This script creates a tar or zip archive with a lyx file and all included
# files (graphics and so on). By default, the created archive is the standard
# type on a given platform, such that a zip archive is created on Windows and
# a gzip compressed tar archive on *nix. This can be controlled by command
# line options, however.
import gzip, os, re, sys
from io import BytesIO
import subprocess
# The path to the current python executable. sys.executable may fail, so in
# this case we revert to simply calling "python" from the path.
PYTHON_BIN = sys.executable if sys.executable else "python"
running_on_windows = (os.name == 'nt')
if running_on_windows:
from shutil import copyfile
from tempfile import NamedTemporaryFile
from lyxwin_getopt import getopt
else:
from getopt import getopt
# Pre-compiled regular expressions.
re_lyxfile = re.compile(br"\.lyx$")
re_input = re.compile(b'^(.*)\\\\(input|include){(\\s*)(.+)(\\s*)}.*$')
re_ertinput = re.compile(b'^(input|include)({)(\\s*)(.+)(\\s*)}.*$')
re_package = re.compile(b'^(.*)\\\\(usepackage){(\\s*)(.+)(\\s*)}.*$')
re_class = re.compile(b'^(\\\\)(textclass)(\\s+)(.+)\\s*$')
re_norecur = re.compile(b'^(.*)\\\\(verbatiminput|lstinputlisting|includegraphics\\[*.*\\]*){(\\s*)(.+)(\\s*)}.*$')
re_ertnorecur = re.compile(b'^(verbatiminput|lstinputlisting|includegraphics\\[*.*\\]*)({)(\\s*)(.+)(\\s*)}.*$')
re_filename = re.compile(b'^(\\s*)(filename)(\\s+)(.+)\\s*$')
re_options = re.compile(b'^(\\s*)options(\\s+)(.+)\\s*$')
re_bibfiles = re.compile(b'^(\\s*)bibfiles(\\s+)(.+)\\s*$')
def usage(prog_name):
msg = '''
Usage: %s [-t] [-z] [-l path] [-o output_dir] file.lyx
Options:
-l: Path to lyx2lyx script
-o: Directory for output
-t: Create gzipped tar file
-z: Create zip file
By default, we create file.zip on Windows and file.tar.gz on *nix,
with the file output to where file.lyx is, and we look for lyx2lyx
in the known locations, querying LyX itself if necessary.
'''
return msg % prog_name
def error(message):
sys.stderr.write(message + '\n')
sys.exit(1)
def tostr(message):
return message.decode(sys.getfilesystemencoding())
def gzopen(file):
input = open(file.decode('utf-8'), 'rb')
magicnum = input.read(2)
input.close()
if magicnum == b"\x1f\x8b":
return gzip.open(file.decode('utf-8'))
return open(file.decode('utf-8'), 'rb')
def find_exe(candidates, extlist, path):
for prog in candidates:
for directory in path:
for ext in extlist:
full_path = os.path.join(directory, prog + ext)
if os.access(full_path, os.X_OK):
return prog, full_path
return None, None
def abspath(name):
" Resolve symlinks and returns the absolute normalized name."
newname = os.path.normpath(os.path.abspath(name))
if not running_on_windows:
newname = os.path.realpath(newname)
return newname
def gather_files(curfile, incfiles, lyx2lyx):
" Recursively gather files."
curdir = os.path.dirname(abspath(curfile))
is_lyxfile = re_lyxfile.search(curfile)
if is_lyxfile:
if running_on_windows:
# subprocess cannot cope with unicode arguments and we cannot be
# sure that curfile can be correctly converted to the current
# code page. So, we resort to running lyx2lyx on a copy.
tmp = NamedTemporaryFile(delete=False)
tmp.close()
copyfile(curfile.decode('utf-8'), tmp.name)
try:
l2l_stdout = subprocess.check_output([PYTHON_BIN, lyx2lyx, tmp.name])
except subprocess.CalledProcessError:
error(f'{lyx2lyx} failed to convert "{tostr(curfile)}"')
os.unlink(tmp.name)
else:
try:
l2l_stdout = subprocess.check_output([PYTHON_BIN, lyx2lyx, curfile])
except subprocess.CalledProcessError:
error(f'{lyx2lyx} failed to convert "{tostr(curfile)}"')
if l2l_stdout.startswith(b"\x1f\x8b"):
l2l_stdout = gzip.GzipFile("", "rb", 0, BytesIO(l2l_stdout)).read()
elif running_on_windows:
# For some unknown reason, there can be a spurious '\r' in the line
# separators, causing spurious empty lines when calling splitlines.
l2l_stdout = l2l_stdout.replace(b'\r\r\n', b'\r\n')
lines = l2l_stdout.splitlines()
else:
input = gzopen(curfile)
lines = input.readlines()
input.close()
maybe_in_ert = False
i = 0
while i < len(lines):
# Gather used files.
recursive = True
extlist = [b'']
match = re_filename.match(lines[i])
if not match:
if maybe_in_ert:
match = re_ertinput.match(lines[i])
else:
match = re_input.match(lines[i])
if not match:
match = re_package.match(lines[i])
extlist = [b'.sty']
if not match:
match = re_class.match(lines[i])
extlist = [b'.cls']
if not match:
if maybe_in_ert:
match = re_ertnorecur.match(lines[i])
else:
match = re_norecur.match(lines[i])
extlist = [b'', b'.eps', b'.pdf', b'.png', b'.jpg']
recursive = False
maybe_in_ert = is_lyxfile and lines[i] == b"\\backslash"
if match:
file = match.group(4).strip(b'"')
if not os.path.isabs(file):
file = os.path.join(curdir, file)
file_exists = False
if not os.path.isdir(file):
for ext in extlist:
if os.path.exists(file + ext):
file = file + ext
file_exists = True
break
if file_exists and not abspath(file) in incfiles:
incfiles.append(abspath(file))
if recursive:
gather_files(file, incfiles, lyx2lyx)
i += 1
continue
if not is_lyxfile:
i += 1
continue
# Gather bibtex *.bst files.
match = re_options.match(lines[i])
if match:
file = match.group(3).strip(b'"')
if file.startswith(b"bibtotoc,"):
file = file[9:]
if not os.path.isabs(file):
file = os.path.join(curdir, file + b'.bst')
if os.path.exists(file):
incfiles.append(abspath(file))
i += 1
continue
# Gather bibtex *.bib files.
match = re_bibfiles.match(lines[i])
if match:
bibfiles = match.group(3).strip(b'"').split(b',')
j = 0
while j < len(bibfiles):
if os.path.isabs(bibfiles[j]):
file = bibfiles[j] + b'.bib'
else:
file = os.path.join(curdir, bibfiles[j] + b'.bib')
if os.path.exists(file):
incfiles.append(abspath(file))
j += 1
i += 1
continue
i += 1
return 0
def find_lyx2lyx(progloc, path):
" Find a usable version of the lyx2lyx script. "
# first we will see if the script is roughly where we are
# i.e., we will assume we are in $SOMEDIR/scripts and look
# for $SOMEDIR/lyx2lyx/lyx2lyx.
ourpath = os.path.dirname(abspath(progloc))
(upone, discard) = os.path.split(ourpath)
if running_on_windows:
tryit = os.path.join(upone, b"lyx2lyx", b"lyx2lyx")
else:
tryit = os.path.join(upone, "lyx2lyx", "lyx2lyx")
if os.access(tryit, os.X_OK):
return tryit
# now we will try to query LyX itself to find the path.
extlist = ['']
if "PATHEXT" in os.environ:
extlist = extlist + os.environ["PATHEXT"].split(os.pathsep)
lyx_exe, full_path = find_exe(["lyxc", "lyx"], extlist, path)
if lyx_exe is None:
error('Cannot find the LyX executable in the path.')
try:
cmd_stdout = subprocess.check_output([lyx_exe, '-version'], stderr=subprocess.STDOUT)
except subprocess.CalledProcessError:
error('Cannot query LyX about the lyx2lyx script.')
re_msvc = re.compile(r'^(\s*)(Host type:)(\s+)(win32)$')
re_sysdir = re.compile(r'^(\s*)(LyX files dir:)(\s+)(\S+)$')
lines = cmd_stdout.splitlines()
for line in lines:
match = re_msvc.match(line)
if match:
# The LyX executable was built with MSVC, so the
# "LyX files dir:" line is unusable
basedir = os.path.dirname(os.path.dirname(full_path))
tryit = os.path.join(basedir, 'Resources', 'lyx2lyx', 'lyx2lyx')
break
match = re_sysdir.match(line)
if match:
tryit = os.path.join(match.group(4), 'lyx2lyx', 'lyx2lyx')
break
if not os.access(tryit, os.X_OK):
error('Unable to find the lyx2lyx script.')
return tryit
def main(args):
ourprog = args[0]
try:
if running_on_windows:
(options, argv) = getopt(args[1:], b"htzl:o:")
else:
(options, argv) = getopt(args[1:], "htzl:o:")
except:
error(usage(ourprog))
# we expect the filename to be left
if len(argv) != 1:
error(usage(ourprog))
makezip = running_on_windows
outdir = ""
lyx2lyx = None
for (opt, param) in options:
if opt == "-h":
print(usage(ourprog))
sys.exit(0)
elif opt == "-t":
makezip = False
elif opt == "-z":
makezip = True
elif opt == "-l":
lyx2lyx = param
elif opt == "-o":
outdir = param
if not os.path.isdir(outdir):
error('Error: "%s" is not a directory.' % outdir)
lyxfile = argv[0]
if not os.path.exists(lyxfile):
error('File "%s" not found.' % tostr(lyxfile))
# Check that it actually is a LyX document
input = gzopen(lyxfile)
line = input.readline()
input.close()
if not (line and line.startswith(b'#LyX')):
error('File "%s" is not a LyX document.' % tostr(lyxfile))
if makezip:
import zipfile
else:
import tarfile
ar_ext = b".tar.gz"
if makezip:
ar_ext = b".zip"
ar_name = re_lyxfile.sub(ar_ext, abspath(lyxfile)).decode('utf-8')
if outdir:
ar_name = os.path.join(abspath(outdir), os.path.basename(ar_name))
path = os.environ["PATH"].split(os.pathsep)
if lyx2lyx is None:
lyx2lyx = find_lyx2lyx(ourprog, path)
# Initialize the list with the specified LyX file and recursively
# gather all required files (also from child documents).
incfiles = [abspath(lyxfile)]
gather_files(lyxfile, incfiles, lyx2lyx)
# Find the topmost dir common to all files
path_sep = os.path.sep.encode('utf-8')
if len(incfiles) > 1:
topdir = os.path.commonprefix(incfiles)
# As os.path.commonprefix() works on a character by character basis,
# rather than on path elements, we need to remove any trailing bytes.
topdir = topdir.rpartition(path_sep)[0] + path_sep
else:
topdir = os.path.dirname(incfiles[0]) + path_sep
# Remove the prefix common to all paths in the list
i = 0
while i < len(incfiles):
incfiles[i] = incfiles[i].replace(topdir, b'', 1)
i += 1
# Remove duplicates and sort the list
incfiles = list(set(incfiles))
incfiles.sort()
if topdir != '':
os.chdir(topdir)
# Create the archive
try:
if makezip:
zip = zipfile.ZipFile(ar_name, "w", zipfile.ZIP_DEFLATED)
for file in incfiles:
zip.write(file.decode('utf-8'))
zip.close()
else:
tar = tarfile.open(ar_name, "w:gz")
for file in incfiles:
tar.add(file.decode('utf-8'))
tar.close()
except:
error('Failed to create LyX archive "%s"' % ar_name)
print('LyX archive "%s" created successfully.' % ar_name)
return 0
if __name__ == "__main__":
if running_on_windows:
# This works around <http://bugs.python.org/issue2128> for Python 2.
# All arguments are retrieved in unicode format and converted to utf-8.
# In this way, when launched from the command line, lyxpak.py can deal
# with any non-ascii names. Unfortunately, this is not the case when
# launched by LyX, because LyX converts the arguments of the converters
# to the filesystem encoding. On Windows this corresponds to the current
# code page and not to the UTF-16 encoding used by NTFS, such that they
# are transliterated if not exactly encodable. As an example, α may
# become a, β may become ß, and so on. However, this is a problem only
# if the full path of the LyX document contains an unencodable character
# as all other paths are extracted from the document in utf-8 format.
from ctypes import WINFUNCTYPE, windll, POINTER, byref, c_int
from ctypes.wintypes import LPWSTR, LPCWSTR
GetCommandLineW = WINFUNCTYPE(LPWSTR)(("GetCommandLineW", windll.kernel32))
CommandLineToArgvW = WINFUNCTYPE(POINTER(LPWSTR), LPCWSTR, POINTER(c_int))(("CommandLineToArgvW", windll.shell32))
argc = c_int(0)
argv_unicode = CommandLineToArgvW(GetCommandLineW(), byref(argc))
# unicode_argv[0] is the Python interpreter, so skip that.
argv = [argv_unicode[i].encode('utf-8') for i in range(1, argc.value)]
# Also skip option arguments to the Python interpreter.
while len(argv) > 0:
if not argv[0].startswith(b"-"):
break
argv = argv[1:]
sys.argv = argv
main(sys.argv)