yml2/yml2c.py
changeset 55 e76930ea6464
child 58 a218553807ab
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/yml2/yml2c.py	Tue Sep 04 17:00:00 2018 +0200
@@ -0,0 +1,102 @@
+#!/usr/bin/env python
+# vim: set fileencoding=utf-8 :
+
+"""\
+YML 2 compiler version 5.8
+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)
+
+
+def main():
+    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))
+
+        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 as msg:
+        w(u"not found: " + u(msg) + u"\n")
+        sys.exit(4)
+    except LookupError as msg:
+        w(u"not found: " + u(msg) + u"\n")
+        sys.exit(4)
+    except Exception as msg:
+        w(msg)
+        sys.exit(5)
+
+
+if __name__ == "__main__":
+    sys.exit(main())