Am Freitag, den 21.08.2020, 09:56 +0200 schrieb Pavel Sanda: > I am not entirely against pythonic solution, but I think at this > stage it's really for win users to step up. I can make the linux part > working if they come up with a solution.
Humble attempt attached. Works for me (on Linux) and is surprisingly fast (though arguably a bit slower than locate). Some advantages over the bash script apart from portability: * No hardcoded viewer. This checks for the same set of viewers than configure.py and takes the first match. Also, there are options to specify a custom pdf/ps viewer (-v and -w) * Handles filenames with spaces (can be easily fixed in the bash script though) I suppose if the python find method turns out to be too slow, we can also use locate on *nix and the equivalent (dir?) on windows and only fall back to the python method if none of these is available. Pavel, what do you think? Jürgen
#! /usr/bin/python3
# -*- coding: utf-8 -*-
# file lyxpaperview.py
# This file is part of LyX, the document processor.
# Licence details can be found in the file COPYING.
# author Jürgen Spitzmüller
# Full author contact details are available in file CREDITS
# This script searches the home directory for a PDF or PS
# file with a name containing year and author. If found,
# it opens the file in a viewer.
import getopt, os, sys, subprocess
pdf_viewers = ('pdfview', 'kpdf', 'okular', 'qpdfview --unique',
'evince', 'xreader', 'kghostview', 'xpdf', 'SumatraPDF',
'acrobat', 'acroread', 'mupdf',
'gv', 'ghostview', 'AcroRd32', 'gsview64', 'gsview32')
ps_viewers = ("kghostview", "okular", "qpdfview --unique",
"evince", "xreader", "gv", "ghostview -swap",
"gsview64", "gsview32")
def message(message):
sys.stderr.write("lyxpaperview: %s\n" % message)
def error(message):
sys.stderr.write("lyxpaperview error: %s\n" % message)
exit(1)
def usage(prog_name):
msg = "Usage: %s [-v pdfviewer] [-w psviewer] year author"
return msg % prog_name
# Copied from lyxpreview_tools.py
# PATH and PATHEXT environment variables
path = os.environ["PATH"].split(os.pathsep)
extlist = ['']
if "PATHEXT" in os.environ:
extlist += os.environ["PATHEXT"].split(os.pathsep)
extlist.append('.py')
def find_exe(candidates):
global extlist, path
for command in candidates:
prog = command.split()[0]
for directory in path:
for ext in extlist:
full_path = os.path.join(directory, prog + ext)
if os.access(full_path, os.X_OK):
# The thing is in the PATH already (or we wouldn't
# have found it). Return just the basename to avoid
# problems when the path to the executable contains
# spaces.
if full_path.lower().endswith('.py'):
return command.replace(prog, '"%s" "%s"'
% (sys.executable, full_path))
return command
return None
def find_exe_or_terminate(candidates):
exe = find_exe(candidates)
if exe == None:
error("Unable to find executable from '%s'" % " ".join(candidates))
return exe
def find(year, author, path):
result = []
for root, dirs, files in os.walk(path):
for fname in files:
lfname = fname.lower()
if lfname.endswith(('.pdf', '.ps')) and lfname.find(author) != -1 and lfname.find(year) != -1:
return os.path.join(root, fname)
return ""
def main(argv):
progname = argv[0]
opts, args = getopt.getopt(sys.argv[1:], "v:w:")
pdfviewer = ""
psviewer = ""
for o, v in opts:
if o == "-v":
pdfviewer = v
if o == "-w":
psviewer = v
if len(args) != 2:
error(usage(progname))
year = args[0]
author = args[1]
result = find(year, author.lower(), path = os.environ["HOME"])
if result == "":
message("no document found!")
return 0
else:
message("found document %s" % result)
viewer = ""
if result.lower().endswith('.ps'):
if psviewer == "":
viewer = find_exe_or_terminate(ps_viewers)
else:
viewer = psviewer
else:
if pdfviewer == "":
viewer = find_exe_or_terminate(pdf_viewers)
else:
viewer = pdfviewer
subprocess.call([viewer, result])
return 0
if __name__ == "__main__":
main(sys.argv)
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