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# -*- coding: utf-8 -*-
"""
pygments.cmdline
~~~~~~~~~~~~~~~~
Command line interface.
:copyright: 2006 by Georg Brandl.
:license: BSD, see LICENSE for more details.
"""
import sys
import getopt
from pygments import __version__, __author__, highlight
from pygments.lexers import LEXERS, get_lexer_by_name, get_lexer_for_filename
from pygments.util import OptionError
from pygments.formatters import FORMATTERS, get_formatter_by_name, \
get_formatter_for_filename, TerminalFormatter
USAGE = """\
Usage: %s [-l <lexer>] [-f <formatter>] [-O <options>] [-o <outfile>] [<infile>]
%s -S <style> -f <formatter> [-a <arg>] [-O <options>]
%s -L | -h | -V
Highlight the input file and write the result to <outfile>.
If no input file is given, use stdin, if -o is not given, use stdout.
<lexer> is a lexer name (query all lexer names with -L). If -l is not
given, the lexer is guessed from the extension of the input file name
(this obviously doesn't work if the input is stdin).
Likewise, <formatter> is a formatter name, and will be guessed from
the extension of the output file name. If no output file is given,
the terminal formatter will be used by default.
With the -O option, you can give the lexer and formatter a comma-
separated list of options, e.g. ``-O bg=light,python=cool``.
With the -S option, print out style definitions for style <style>
for formatter <formatter>. The argument given by -a is formatter
dependent.
The -L option lists all available lexers and formatters.
The -h option prints this help.
The -V option prints the package version.
"""
def _parse_options(o_str):
opts = {}
if not o_str:
return opts
o_args = o_str.split(',')
for o_arg in o_args:
o_arg = o_arg.strip()
try:
o_key, o_val = o_arg.split('=')
o_key = o_key.strip()
o_val = o_val.strip()
except ValueError:
opts[o_arg] = True
else:
opts[o_key] = o_val
return opts
def _print_lflist():
# print version
main(['', '-V'])
print
print "Lexers:"
print "~~~~~~~"
info = []
for _, fullname, names, exts, _ in LEXERS.itervalues():
tup = (', '.join(names)+':', fullname,
exts and '(extensions ' + ', '.join(exts) + ')' or '')
info.append(tup)
info.sort()
for i in info:
print ('%s\n %s %s') % i
print
print "Formatters:"
print "~~~~~~~~~~~"
info = []
for fullname, names, exts, doc in FORMATTERS.itervalues():
tup = (', '.join(names)+':', doc,
exts and '(extensions ' + ', '.join(exts) + ')' or '')
info.append(tup)
info.sort()
for i in info:
print ('%s\n %s %s') % i
def main(args):
"""
Main command line entry point.
"""
usage = USAGE % ((args[0],) * 3)
try:
opts, args = getopt.getopt(args[1:], "l:f:o:O:LhVS:a:")
except getopt.GetoptError:
print >>sys.stderr, usage
return 2
opts = dict(opts)
if not opts and not args:
print usage
return 0
if opts.pop('-h', None) is not None:
print usage
return 0
if opts.pop('-V', None) is not None:
print 'Pygments version %s, (c) 2006 by %s.' % (__version__, __author__)
return 0
# handle ``pygmentize -L``
L_opt = opts.pop('-L', None)
if L_opt is not None:
if opts or args:
print >>sys.stderr, usage
return 2
_print_lflist()
return 0
# parse -O options
O_opts = _parse_options(opts.pop('-O', None))
# handle ``pygmentize -S``
S_opt = opts.pop('-S', None)
a_opt = opts.pop('-a', None)
if S_opt is not None:
f_opt = opts.pop('-f', None)
if not f_opt:
print >>sys.stderr, usage
return 2
if opts or args:
print >>sys.stderr, usage
return 2
try:
O_opts['style'] = S_opt
fmter = get_formatter_by_name(f_opt, **O_opts)
except ValueError, err:
print >>sys.stderr, err
return 1
arg = a_opt or ''
print fmter.get_style_defs(arg)
return 0
# if no -S is given, -a is not allowed
if a_opt is not None:
print >>sys.stderr, usage
return 2
# select formatter
outfn = opts.pop('-o', None)
fmter = opts.pop('-f', None)
if fmter:
try:
fmter = get_formatter_by_name(fmter, **O_opts)
except (OptionError, ValueError), err:
print >>sys.stderr, 'Error:', err
return 1
if outfn:
if not fmter:
try:
fmter = get_formatter_for_filename(outfn, **O_opts)
except (OptionError, ValueError), err:
print >>sys.stderr, 'Error:', err
return 1
try:
outfile = file(outfn, 'wb')
except Exception, err:
print >>sys.stderr, 'Error: cannot open outfile:', err
return 1
else:
if not fmter:
fmter = TerminalFormatter(**O_opts)
outfile = sys.stdout
# select lexer
lexer = opts.pop('-l', None)
if lexer:
try:
lexer = get_lexer_by_name(lexer, **O_opts)
except (OptionError, ValueError), err:
print >>sys.stderr, 'Error:', err
return 1
if args:
if len(args) > 1:
print >>sys.stderr, usage
return 2
infn = args[0]
if not lexer:
try:
lexer = get_lexer_for_filename(infn, **O_opts)
except (OptionError, ValueError), err:
print >>sys.stderr, 'Error:', err
return 1
try:
code = file(infn).read()
except Exception, err:
print >>sys.stderr, 'Error: cannot read infile:', err
return 1
else:
if not lexer:
print >>sys.stderr, 'Error: no lexer name given and reading from stdin'
return 2
code = sys.stdin.read()
# ... and do it!
try:
highlight(code, lexer, fmter, outfile)
except Exception, err:
import traceback
print >>sys.stderr, 'Error while highlighting:'
print >>sys.stderr, traceback.format_exc(0).splitlines()[-1]
return 1
return 0
|
