>b's YML 2
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#!/usr/bin/env python
# vim: set fileencoding=utf-8 :
"""\
YML 2 compiler version 5.5
Copyleft (c), 2009-2011, Volker Birk http://fdik.org/yml/
"""
import sys, os, codecs, locale
import fileinput, unicodedata
from optparse import OptionParser
from pyPEG import parse, u
from yml2 import ymlCStyle, comment, oldSyntax
import backend
def printInfo(option, opt_str, value, parser):
sys.stdout.write(__doc__)
def w(msg):
if isinstance(msg, BaseException):
try:
msg = str(msg) + "\n"
except:
msg = u(msg) + u"\n"
if type(msg) is unicode:
msg = codecs.encode(msg, sys.stderr.encoding)
sys.stderr.write(msg)
optParser = OptionParser()
optParser.add_option("-C", "--old-syntax", action="store_true", dest="old_syntax",
help="syntax of YML 2 version 1.x (compatibility mode)", default=False)
optParser.add_option("-D", "--emit-linenumbers", action="store_true", dest="emitlinenumbers",
help="emit line numbers into the resulting XML for debugging purposes", default=False)
optParser.add_option("-E", "--encoding", dest="encoding", metavar="ENCODING", default=locale.getdefaultlocale()[1],
help="encoding of input files (default to locale)")
optParser.add_option("-I", "--include", dest="includePathText", metavar="INCLUDE_PATH",
help="precede YML_PATH by a colon separated INCLUDE_PATH to search for include files")
optParser.add_option("-m", "--omit-empty-parm-tags", action="store_true", dest="omitemptyparm",
help="does nothing (only there for compatibility reasons)", default=False)
optParser.add_option("-n", "--normalization", dest="normalization", metavar="NORMALIZATION", default="NFC",
help="Unicode normalization (none, NFD, NFKD, NFC, NFKC, FCD, default is NFC)")
optParser.add_option("-o", "--output", dest="outputFile", metavar="FILE",
help="place output in file FILE")
optParser.add_option("-p", "--parse-only", action="store_true", dest="parseonly",
help="parse only, then output pyAST as text to stdout", default=False)
optParser.add_option("-V", "--version", action="callback", callback=printInfo, help="show version info")
(options, args) = optParser.parse_args()
if options.old_syntax:
oldSyntax()
if options.emitlinenumbers:
backend.emitlinenumbers = True
backend.encoding = options.encoding
try:
if options.includePathText:
backend.includePath = options.includePathText.split(':')
dirs = os.environ.get('YML_PATH', '.').split(':')
backend.includePath.extend(dirs)
files = fileinput.input(args, mode="rU", openhook=fileinput.hook_encoded(options.encoding))
# fileinput suffer from two nasty bugs :
# - ignoring open hook with stdin
# - iterator requires ctrl-D to be pressed twice on some platform
if args in [[],['-']] :
files._files=[]
files._buffer=[unicode(line, options.encoding) for line in sys.stdin.readlines()]
ymlC = ymlCStyle()
result = parse(ymlC, files, True, comment, packrat=True)
if options.parseonly:
print result
else:
result = backend.finish(result)
if options.normalization != "none":
result = unicodedata.normalize(options.normalization, result)
if options.outputFile and options.outputFile != "-":
outfile = open(options.outputFile, "w")
outfile.write(codecs.encode(result, options.encoding))
outfile.close()
else:
print codecs.encode(result, options.encoding)
except KeyboardInterrupt:
w("\n")
sys.exit(1)
except KeyError, msg:
w(u"not found: " + u(msg) + u"\n")
sys.exit(4)
except LookupError, msg:
w(u"not found: " + u(msg) + u"\n")
sys.exit(4)
except Exception, msg:
w(msg)
sys.exit(5)