1

#!/usr/bin/env python3

     2

# vim: set fileencoding=utf-8 :

     3

     4

"""\

     5

YML 2 compiler version 6.2

     6

Copyleft (c), 2009-2019, Volker Birk  http://fdik.org/yml/

     7

     8

"""

     9

    10

import sys, os, codecs, locale

    11

import fileinput, unicodedata

    12

from optparse import OptionParser

    13

    14

from yml2.pyPEG import parse, u

    15

from yml2 import ymlCStyle, comment, oldSyntax

    16

import yml2.backend as backend

    17

    18

YML_DEFAULT_PATH = [os.path.dirname(backend.__file__)]

    19

    20

def printInfo(option, opt_str, value, parser):

    21

    sys.stdout.write(__doc__)

    22

    sys.exit(0)

    23

    24

def w(msg):

    25

    if isinstance(msg, BaseException):

    26

        msg = str(msg) + "\n"

    27

    if type(msg) is bytes:

    28

        msg = codecs.encode(msg, sys.stderr.encoding)

    29

    sys.stderr.write(msg)

    30

    31

optParser = OptionParser()

    32

optParser.add_option("-C", "--old-syntax", action="store_true", dest="old_syntax",

    33

        help="syntax of YML 2 version 1.x (compatibility mode)", default=False)

    34

optParser.add_option("-D", "--emit-linenumbers", action="store_true", dest="emitlinenumbers",

    35

        help="emit line numbers into the resulting XML for debugging purposes", default=False)

    36

optParser.add_option("-E", "--encoding", dest="encoding", metavar="ENCODING", default=locale.getdefaultlocale()[1],

    37

        help="encoding of input files (default to locale)")

    38

optParser.add_option("-I", "--include", dest="includePathText", metavar="INCLUDE_PATH",

    39

        help="precede YML_PATH by a colon separated INCLUDE_PATH to search for include files")

    40

optParser.add_option("-m", "--omit-empty-parm-tags", action="store_true", dest="omitemptyparm",

    41

        help="does nothing (only there for compatibility reasons)", default=False)

    42

optParser.add_option("-n", "--normalization", dest="normalization", metavar="NORMALIZATION", default="NFC",

    43

        help="Unicode normalization (none, NFD, NFKD, NFC, NFKC, FCD, default is NFC)")

    44

optParser.add_option("-o", "--output", dest="outputFile", metavar="FILE",

    45

        help="place output in file FILE")

    46

optParser.add_option("-p", "--parse-only", action="store_true", dest="parseonly",

    47

        help="parse only, then output pyAST as text to stdout", default=False)

    48

optParser.add_option("-V", "--version", action="callback", callback=printInfo, help="show version info")

    49

(options, args) = optParser.parse_args()

    50

    51

if options.old_syntax:

    52

    oldSyntax()

    53

    54

if options.emitlinenumbers:

    55

    backend.emitlinenumbers = True

    56

    57

backend.encoding = options.encoding

    58

    59

try:

    60

    if options.includePathText:

    61

        backend.includePath = options.includePathText.split(':')

    62

    63

    dirs = os.environ.get('YML_PATH', '.').split(':') + YML_DEFAULT_PATH

    64

    backend.includePath.extend(dirs)

    65

    66

    files = fileinput.input(args, mode="rU", openhook=fileinput.hook_encoded(options.encoding))

    67

    68

    ymlC = ymlCStyle()

    69

    result = parse(ymlC, files, True, comment, packrat=True)

    70

    71

    if options.parseonly:

    72

        print(result)

    73

    else:

    74

        result = backend.finish(result)

    75

        if options.normalization != "none":

    76

            result = unicodedata.normalize(options.normalization, result)

    77

    78

        if options.outputFile and options.outputFile != "-":

    79

            outfile = open(options.outputFile, "wb")

    80

            outfile.write(codecs.encode(result, options.encoding))

    81

            outfile.close()

    82

        else:

    83

            sys.stdout.buffer.write(codecs.encode(result, options.encoding))

    84

            print()

    85

    86

except KeyboardInterrupt:

    87

    w("\n")

    88

    sys.exit(1)

    89

except KeyError as msg:

    90

    w("not found: " + u(msg) + "\n")

    91

    sys.exit(4)

    92

except LookupError as msg:

    93

    w("not found: " + u(msg) + "\n")

    94

    sys.exit(4)

    95

except Exception as msg:

    96

    w(msg)

    97

    sys.exit(5)