示例#1
0
                                'from stdin (try using -g or -l <lexer>)'
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use utf-8 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if 'encoding' not in parsed_opts and 'outencoding' not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = 'utf-8'
        else:
            if sys.version_info < (3, ):
                # use terminal encoding; Python 3's terminals already do that
                lexer.encoding = getattr(sys.stdin, 'encoding',
                                         None) or 'utf-8'
                fmter.encoding = getattr(sys.stdout, 'encoding',
                                         None) or 'utf-8'
    elif not outfn and sys.version_info > (3, ):
        # output to terminal with encoding -> use .buffer
        outfile = sys.stdout.buffer

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception, err:
        import traceback
        info = traceback.format_exception(*sys.exc_info())
示例#2
0
def main(args=sys.argv):
    """
    Main command line entry point.
    """
    # pylint: disable-msg=R0911,R0912,R0915

    usage = USAGE % ((args[0],) * 6)

    if sys.platform in ['win32', 'cygwin']:
        try:
            # Provide coloring under Windows, if possible
            import colorama
            colorama.init()
        except ImportError:
            pass

    try:
        popts, args = getopt.getopt(args[1:], "l:f:F:o:O:P:LS:a:N:hVHg")
    except getopt.GetoptError:
        print(usage, file=sys.stderr)
        return 2
    opts = {}
    O_opts = []
    P_opts = []
    F_opts = []
    for opt, arg in popts:
        if opt == '-O':
            O_opts.append(arg)
        elif opt == '-P':
            P_opts.append(arg)
        elif opt == '-F':
            F_opts.append(arg)
        opts[opt] = arg

    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) 2006-2014 by Georg Brandl.' % __version__)
        return 0

    # handle ``pygmentize -L``
    L_opt = opts.pop('-L', None)
    if L_opt is not None:
        if opts:
            print(usage, file=sys.stderr)
            return 2

        # print version
        main(['', '-V'])
        if not args:
            args = ['lexer', 'formatter', 'filter', 'style']
        for arg in args:
            _print_list(arg.rstrip('s'))
        return 0

    # handle ``pygmentize -H``
    H_opt = opts.pop('-H', None)
    if H_opt is not None:
        if opts or len(args) != 2:
            print(usage, file=sys.stderr)
            return 2

        what, name = args
        if what not in ('lexer', 'formatter', 'filter'):
            print(usage, file=sys.stderr)
            return 2

        _print_help(what, name)
        return 0

    # parse -O options
    parsed_opts = _parse_options(O_opts)
    opts.pop('-O', None)

    # parse -P options
    for p_opt in P_opts:
        try:
            name, value = p_opt.split('=', 1)
        except ValueError:
            parsed_opts[p_opt] = True
        else:
            parsed_opts[name] = value
    opts.pop('-P', None)

    # handle ``pygmentize -N``
    infn = opts.pop('-N', None)
    if infn is not None:
        try:
            lexer = get_lexer_for_filename(infn, **parsed_opts)
        except ClassNotFound as err:
            lexer = TextLexer()
        except OptionError as err:
            print('Error:', err, file=sys.stderr)
            return 1

        print(lexer.aliases[0])
        return 0

    # 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(usage, file=sys.stderr)
            return 2
        if opts or args:
            print(usage, file=sys.stderr)
            return 2

        try:
            parsed_opts['style'] = S_opt
            fmter = get_formatter_by_name(f_opt, **parsed_opts)
        except ClassNotFound as err:
            print(err, file=sys.stderr)
            return 1

        arg = a_opt or ''
        try:
            print(fmter.get_style_defs(arg))
        except Exception as err:
            print('Error:', err, file=sys.stderr)
            return 1
        return 0

    # if no -S is given, -a is not allowed
    if a_opt is not None:
        print(usage, file=sys.stderr)
        return 2

    # parse -F options
    F_opts = _parse_filters(F_opts)
    opts.pop('-F', None)

    # select formatter
    outfn = opts.pop('-o', None)
    fmter = opts.pop('-f', None)
    if fmter:
        try:
            fmter = get_formatter_by_name(fmter, **parsed_opts)
        except (OptionError, ClassNotFound) as err:
            print('Error:', err, file=sys.stderr)
            return 1

    if outfn:
        if not fmter:
            try:
                fmter = get_formatter_for_filename(outfn, **parsed_opts)
            except (OptionError, ClassNotFound) as err:
                print('Error:', err, file=sys.stderr)
                return 1
        try:
            outfile = open(outfn, 'wb')
        except Exception as err:
            print('Error: cannot open outfile:', err, file=sys.stderr)
            return 1
    else:
        if not fmter:
            fmter = TerminalFormatter(**parsed_opts)
        outfile = sys.stdout

    # select lexer
    lexer = opts.pop('-l', None)
    if lexer:
        try:
            lexer = get_lexer_by_name(lexer, **parsed_opts)
        except (OptionError, ClassNotFound) as err:
            print('Error:', err, file=sys.stderr)
            return 1

    if args:
        if len(args) > 1:
            print(usage, file=sys.stderr)
            return 2

        infn = args[0]
        try:
            code = open(infn, 'rb').read()
        except Exception as err:
            print('Error: cannot read infile:', err, file=sys.stderr)
            return 1

        if not lexer:
            try:
                lexer = get_lexer_for_filename(infn, code, **parsed_opts)
            except ClassNotFound as err:
                if '-g' in opts:
                    try:
                        lexer = guess_lexer(code, **parsed_opts)
                    except ClassNotFound:
                        lexer = TextLexer(**parsed_opts)
                else:
                    print('Error:', err, file=sys.stderr)
                    return 1
            except OptionError as err:
                print('Error:', err, file=sys.stderr)
                return 1

    else:
        if '-g' in opts:
            code = sys.stdin.read()
            try:
                lexer = guess_lexer(code, **parsed_opts)
            except ClassNotFound:
                lexer = TextLexer(**parsed_opts)
        elif not lexer:
            print('Error: no lexer name given and reading ' + \
                                'from stdin (try using -g or -l <lexer>)', file=sys.stderr)
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use latin1 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if 'encoding' not in parsed_opts and 'outencoding' not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = 'latin1'
        else:
            if sys.version_info < (3,):
                # use terminal encoding; Python 3's terminals already do that
                lexer.encoding = getattr(sys.stdin, 'encoding',
                                         None) or 'ascii'
                fmter.encoding = getattr(sys.stdout, 'encoding',
                                         None) or 'ascii'
    elif not outfn and sys.version_info > (3,):
        # output to terminal with encoding -> use .buffer
        outfile = sys.stdout.buffer

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception:
        import traceback
        info = traceback.format_exception(*sys.exc_info())
        msg = info[-1].strip()
        if len(info) >= 3:
            # extract relevant file and position info
            msg += '\n   (f%s)' % info[-2].split('\n')[0].strip()[1:]
        print(file=sys.stderr)
        print('*** Error while highlighting:', file=sys.stderr)
        print(msg, file=sys.stderr)
        return 1

    return 0
示例#3
0
            print >>sys.stderr, 'Error: no lexer name given and reading ' + \
                                'from stdin (try using -g or -l <lexer>)'
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use latin1 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if 'encoding' not in parsed_opts and 'outencoding' not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = 'latin1'
        else:
            # use terminal encoding
            lexer.encoding = getattr(sys.stdin, 'encoding', None) or 'ascii'
            fmter.encoding = getattr(sys.stdout, 'encoding', None) or 'ascii'

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception, err:
        import traceback
        info = traceback.format_exception(*sys.exc_info())
        msg = info[-1].strip()
        if len(info) >= 3:
            # extract relevant file and position info
            msg += '\n   (f%s)' % info[-2].split('\n')[0].strip()[1:]
示例#4
0
                                'from stdin (try using -g or -l <lexer>)'
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use utf-8 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if 'encoding' not in parsed_opts and 'outencoding' not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = 'utf-8'
        else:
            if sys.version_info < (3,):
                # use terminal encoding; Python 3's terminals already do that
                lexer.encoding = getattr(sys.stdin, 'encoding',
                                         None) or 'utf-8'
                fmter.encoding = getattr(sys.stdout, 'encoding',
                                         None) or 'utf-8'

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception, err:
        import traceback
        info = traceback.format_exception(*sys.exc_info())
        msg = info[-1].strip()
        if len(info) >= 3:
            # extract relevant file and position info
            print >>sys.stderr, 'Error: no lexer name given and reading ' + \
                                'from stdin (try using -g or -l <lexer>)'
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use latin1 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if 'encoding' not in parsed_opts and 'outencoding' not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = 'latin1'
        else:
            # use terminal encoding
            lexer.encoding = getattr(sys.stdin, 'encoding', None) or 'ascii'
            fmter.encoding = getattr(sys.stdout, 'encoding', None) or 'ascii'

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception, err:
        import traceback
        info = traceback.format_exception(*sys.exc_info())
        msg = info[-1].strip()
        if len(info) >= 3:
            # extract relevant file and position info
            msg += '\n   (f%s)' % info[-2].split('\n')[0].strip()[1:]
示例#6
0
文件: pyg.py 项目: jacques/molybdenum
args = sys.argv[1:]
if len(args) == 1:
    filename = args[0]
    content = codecs.open(args[0], "r", "utf-8").read()
elif len(args) == 2:
    filename = args[0]
    assert args[1] == "-"
    content = sys.stdin.read()

# Cheesy hack for override some false guesses by Pygments.
# A better answer might be to look at lexing errors and try a secondary
# guess.
overrides = {"Makefile.py": ".py"}
basename = basename(filename)
try:
    lexer = get_lexer_for_filename(overrides.get(basename, filename), content)
except ClassNotFound:
    try:
        lexer = guess_lexer(content)
    except ClassNotFound:
        lexer = TextLexer()
sys.stderr.write("lexer: %r\n" % lexer)

fmter = get_formatter_by_name("html")
fmter.encoding = "utf-8"
lexer.encoding = "utf-8"
outfile = sys.stdout

highlight(content, lexer, fmter, outfile)
示例#7
0
            print >> sys.stderr, "Error: no lexer name given and reading " + "from stdin (try using -g or -l <lexer>)"
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use latin1 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if "encoding" not in parsed_opts and "outencoding" not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = "latin1"
        else:
            if sys.version_info < (3,):
                # use terminal encoding; Python 3's terminals already do that
                lexer.encoding = getattr(sys.stdin, "encoding", None) or "ascii"
                fmter.encoding = getattr(sys.stdout, "encoding", None) or "ascii"
    elif not outfn and sys.version_info > (3,):
        # output to terminal with encoding -> use .buffer
        outfile = sys.stdout.buffer

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception, err:
        import traceback

        info = traceback.format_exception(*sys.exc_info())
示例#8
0
文件: pyg.py 项目: yakiryu/molybdenum
if len(args) == 1:
    filename = args[0]
    content = codecs.open(args[0], 'r', 'utf-8').read()
elif len(args) == 2:
    filename = args[0]
    assert args[1] == "-"
    content = sys.stdin.read()

# Cheesy hack for override some false guesses by Pygments.
# A better answer might be to look at lexing errors and try a secondary
# guess.
overrides = {
    "Makefile.py": ".py",
}
basename = basename(filename)
try:
    lexer = get_lexer_for_filename(overrides.get(basename, filename), content)
except ClassNotFound:
    try:
        lexer = guess_lexer(content)
    except ClassNotFound:
        lexer = TextLexer()
sys.stderr.write("lexer: %r\n" % lexer)

fmter = get_formatter_by_name("html")
fmter.encoding = 'utf-8'
lexer.encoding = 'utf-8'
outfile = sys.stdout

highlight(content, lexer, fmter, outfile)
示例#9
0
def main(args=sys.argv):
    """
    Main command line entry point.
    """
    # pylint: disable-msg=R0911,R0912,R0915

    usage = USAGE % ((args[0],) * 6)

    if sys.platform in ['win32', 'cygwin']:
        try:
            # Provide coloring under Windows, if possible
            import colorama
            colorama.init()
        except ImportError:
            pass

    try:
        popts, args = getopt.getopt(args[1:], "l:f:F:o:O:P:LS:a:N:hVHg")
    except getopt.GetoptError as err:
        print(usage, file=sys.stderr)
        return 2
    opts = {}
    O_opts = []
    P_opts = []
    F_opts = []
    for opt, arg in popts:
        if opt == '-O':
            O_opts.append(arg)
        elif opt == '-P':
            P_opts.append(arg)
        elif opt == '-F':
            F_opts.append(arg)
        opts[opt] = arg

    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) 2006-2013 by Georg Brandl.' % __version__)
        return 0

    # handle ``pygmentize -L``
    L_opt = opts.pop('-L', None)
    if L_opt is not None:
        if opts:
            print(usage, file=sys.stderr)
            return 2

        # print version
        main(['', '-V'])
        if not args:
            args = ['lexer', 'formatter', 'filter', 'style']
        for arg in args:
            _print_list(arg.rstrip('s'))
        return 0

    # handle ``pygmentize -H``
    H_opt = opts.pop('-H', None)
    if H_opt is not None:
        if opts or len(args) != 2:
            print(usage, file=sys.stderr)
            return 2

        what, name = args
        if what not in ('lexer', 'formatter', 'filter'):
            print(usage, file=sys.stderr)
            return 2

        _print_help(what, name)
        return 0

    # parse -O options
    parsed_opts = _parse_options(O_opts)
    opts.pop('-O', None)

    # parse -P options
    for p_opt in P_opts:
        try:
            name, value = p_opt.split('=', 1)
        except ValueError:
            parsed_opts[p_opt] = True
        else:
            parsed_opts[name] = value
    opts.pop('-P', None)

    # handle ``pygmentize -N``
    infn = opts.pop('-N', None)
    if infn is not None:
        try:
            lexer = get_lexer_for_filename(infn, **parsed_opts)
        except ClassNotFound as err:
            lexer = TextLexer()
        except OptionError as err:
            print('Error:', err, file=sys.stderr)
            return 1

        print(lexer.aliases[0])
        return 0

    # 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(usage, file=sys.stderr)
            return 2
        if opts or args:
            print(usage, file=sys.stderr)
            return 2

        try:
            parsed_opts['style'] = S_opt
            fmter = get_formatter_by_name(f_opt, **parsed_opts)
        except ClassNotFound as err:
            print(err, file=sys.stderr)
            return 1

        arg = a_opt or ''
        try:
            print(fmter.get_style_defs(arg))
        except Exception as err:
            print('Error:', err, file=sys.stderr)
            return 1
        return 0

    # if no -S is given, -a is not allowed
    if a_opt is not None:
        print(usage, file=sys.stderr)
        return 2

    # parse -F options
    F_opts = _parse_filters(F_opts)
    opts.pop('-F', None)

    # select formatter
    outfn = opts.pop('-o', None)
    fmter = opts.pop('-f', None)
    if fmter:
        try:
            fmter = get_formatter_by_name(fmter, **parsed_opts)
        except (OptionError, ClassNotFound) as err:
            print('Error:', err, file=sys.stderr)
            return 1

    if outfn:
        if not fmter:
            try:
                fmter = get_formatter_for_filename(outfn, **parsed_opts)
            except (OptionError, ClassNotFound) as err:
                print('Error:', err, file=sys.stderr)
                return 1
        try:
            outfile = open(outfn, 'wb')
        except Exception as err:
            print('Error: cannot open outfile:', err, file=sys.stderr)
            return 1
    else:
        if not fmter:
            fmter = TerminalFormatter(**parsed_opts)
        outfile = sys.stdout

    # select lexer
    lexer = opts.pop('-l', None)
    if lexer:
        try:
            lexer = get_lexer_by_name(lexer, **parsed_opts)
        except (OptionError, ClassNotFound) as err:
            print('Error:', err, file=sys.stderr)
            return 1

    if args:
        if len(args) > 1:
            print(usage, file=sys.stderr)
            return 2

        infn = args[0]
        try:
            code = open(infn, 'rb').read()
        except Exception as err:
            print('Error: cannot read infile:', err, file=sys.stderr)
            return 1

        if not lexer:
            try:
                lexer = get_lexer_for_filename(infn, code, **parsed_opts)
            except ClassNotFound as err:
                if '-g' in opts:
                    try:
                        lexer = guess_lexer(code, **parsed_opts)
                    except ClassNotFound:
                        lexer = TextLexer(**parsed_opts)
                else:
                    print('Error:', err, file=sys.stderr)
                    return 1
            except OptionError as err:
                print('Error:', err, file=sys.stderr)
                return 1

    else:
        if '-g' in opts:
            code = sys.stdin.read()
            try:
                lexer = guess_lexer(code, **parsed_opts)
            except ClassNotFound:
                lexer = TextLexer(**parsed_opts)
        elif not lexer:
            print('Error: no lexer name given and reading ' + \
                                'from stdin (try using -g or -l <lexer>)', file=sys.stderr)
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use latin1 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if 'encoding' not in parsed_opts and 'outencoding' not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = 'latin1'
        else:
            if sys.version_info < (3,):
                # use terminal encoding; Python 3's terminals already do that
                lexer.encoding = getattr(sys.stdin, 'encoding',
                                         None) or 'ascii'
                fmter.encoding = getattr(sys.stdout, 'encoding',
                                         None) or 'ascii'
    elif not outfn and sys.version_info > (3,):
        # output to terminal with encoding -> use .buffer
        outfile = sys.stdout.buffer

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception as err:
        import traceback
        info = traceback.format_exception(*sys.exc_info())
        msg = info[-1].strip()
        if len(info) >= 3:
            # extract relevant file and position info
            msg += '\n   (f%s)' % info[-2].split('\n')[0].strip()[1:]
        print(file=sys.stderr)
        print('*** Error while highlighting:', file=sys.stderr)
        print(msg, file=sys.stderr)
        return 1

    return 0
示例#10
0
def main(args=sys.argv):
    """
    Main command line entry point.
    """
    # pylint: disable-msg=R0911,R0912,R0915

    usage = USAGE % ((args[0],) * 6)

    if sys.platform in ["win32", "cygwin"]:
        try:
            # Provide coloring under Windows, if possible
            import colorama

            colorama.init()
        except ImportError:
            pass

    try:
        popts, args = getopt.getopt(args[1:], "l:f:F:o:O:P:LS:a:N:hVHg")
    except getopt.GetoptError as err:
        print(usage, file=sys.stderr)
        return 2
    opts = {}
    O_opts = []
    P_opts = []
    F_opts = []
    for opt, arg in popts:
        if opt == "-O":
            O_opts.append(arg)
        elif opt == "-P":
            P_opts.append(arg)
        elif opt == "-F":
            F_opts.append(arg)
        opts[opt] = arg

    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) 2006-2013 by Georg Brandl." % __version__)
        return 0

    # handle ``pygmentize -L``
    L_opt = opts.pop("-L", None)
    if L_opt is not None:
        if opts:
            print(usage, file=sys.stderr)
            return 2

        # print version
        main(["", "-V"])
        if not args:
            args = ["lexer", "formatter", "filter", "style"]
        for arg in args:
            _print_list(arg.rstrip("s"))
        return 0

    # handle ``pygmentize -H``
    H_opt = opts.pop("-H", None)
    if H_opt is not None:
        if opts or len(args) != 2:
            print(usage, file=sys.stderr)
            return 2

        what, name = args
        if what not in ("lexer", "formatter", "filter"):
            print(usage, file=sys.stderr)
            return 2

        _print_help(what, name)
        return 0

    # parse -O options
    parsed_opts = _parse_options(O_opts)
    opts.pop("-O", None)

    # parse -P options
    for p_opt in P_opts:
        try:
            name, value = p_opt.split("=", 1)
        except ValueError:
            parsed_opts[p_opt] = True
        else:
            parsed_opts[name] = value
    opts.pop("-P", None)

    # handle ``pygmentize -N``
    infn = opts.pop("-N", None)
    if infn is not None:
        try:
            lexer = get_lexer_for_filename(infn, **parsed_opts)
        except ClassNotFound as err:
            lexer = TextLexer()
        except OptionError as err:
            print("Error:", err, file=sys.stderr)
            return 1

        print(lexer.aliases[0])
        return 0

    # 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(usage, file=sys.stderr)
            return 2
        if opts or args:
            print(usage, file=sys.stderr)
            return 2

        try:
            parsed_opts["style"] = S_opt
            fmter = get_formatter_by_name(f_opt, **parsed_opts)
        except ClassNotFound as err:
            print(err, file=sys.stderr)
            return 1

        arg = a_opt or ""
        try:
            print(fmter.get_style_defs(arg))
        except Exception as err:
            print("Error:", err, file=sys.stderr)
            return 1
        return 0

    # if no -S is given, -a is not allowed
    if a_opt is not None:
        print(usage, file=sys.stderr)
        return 2

    # parse -F options
    F_opts = _parse_filters(F_opts)
    opts.pop("-F", None)

    # select formatter
    outfn = opts.pop("-o", None)
    fmter = opts.pop("-f", None)
    if fmter:
        try:
            fmter = get_formatter_by_name(fmter, **parsed_opts)
        except (OptionError, ClassNotFound) as err:
            print("Error:", err, file=sys.stderr)
            return 1

    if outfn:
        if not fmter:
            try:
                fmter = get_formatter_for_filename(outfn, **parsed_opts)
            except (OptionError, ClassNotFound) as err:
                print("Error:", err, file=sys.stderr)
                return 1
        try:
            outfile = open(outfn, "wb")
        except Exception as err:
            print("Error: cannot open outfile:", err, file=sys.stderr)
            return 1
    else:
        if not fmter:
            fmter = TerminalFormatter(**parsed_opts)
        outfile = sys.stdout

    # select lexer
    lexer = opts.pop("-l", None)
    if lexer:
        try:
            lexer = get_lexer_by_name(lexer, **parsed_opts)
        except (OptionError, ClassNotFound) as err:
            print("Error:", err, file=sys.stderr)
            return 1

    if args:
        if len(args) > 1:
            print(usage, file=sys.stderr)
            return 2

        infn = args[0]
        try:
            code = open(infn, "rb").read()
        except Exception as err:
            print("Error: cannot read infile:", err, file=sys.stderr)
            return 1

        if not lexer:
            try:
                lexer = get_lexer_for_filename(infn, code, **parsed_opts)
            except ClassNotFound as err:
                if "-g" in opts:
                    try:
                        lexer = guess_lexer(code, **parsed_opts)
                    except ClassNotFound:
                        lexer = TextLexer(**parsed_opts)
                else:
                    print("Error:", err, file=sys.stderr)
                    return 1
            except OptionError as err:
                print("Error:", err, file=sys.stderr)
                return 1

    else:
        if "-g" in opts:
            code = sys.stdin.read()
            try:
                lexer = guess_lexer(code, **parsed_opts)
            except ClassNotFound:
                lexer = TextLexer(**parsed_opts)
        elif not lexer:
            print(
                "Error: no lexer name given and reading " + "from stdin (try using -g or -l <lexer>)", file=sys.stderr
            )
            return 2
        else:
            code = sys.stdin.read()

    # No encoding given? Use latin1 if output file given,
    # stdin/stdout encoding otherwise.
    # (This is a compromise, I'm not too happy with it...)
    if "encoding" not in parsed_opts and "outencoding" not in parsed_opts:
        if outfn:
            # encoding pass-through
            fmter.encoding = "latin1"
        else:
            if sys.version_info < (3,):
                # use terminal encoding; Python 3's terminals already do that
                lexer.encoding = getattr(sys.stdin, "encoding", None) or "ascii"
                fmter.encoding = getattr(sys.stdout, "encoding", None) or "ascii"
    elif not outfn and sys.version_info > (3,):
        # output to terminal with encoding -> use .buffer
        outfile = sys.stdout.buffer

    # ... and do it!
    try:
        # process filters
        for fname, fopts in F_opts:
            lexer.add_filter(fname, **fopts)
        highlight(code, lexer, fmter, outfile)
    except Exception as err:
        import traceback

        info = traceback.format_exception(*sys.exc_info())
        msg = info[-1].strip()
        if len(info) >= 3:
            # extract relevant file and position info
            msg += "\n   (f%s)" % info[-2].split("\n")[0].strip()[1:]
        print(file=sys.stderr)
        print("*** Error while highlighting:", file=sys.stderr)
        print(msg, file=sys.stderr)
        return 1

    return 0