Now handles creating a file when no current one exists.

1 files changed, 17 insertions, 10 deletions

diff --git a/src/LexGen.py b/src/LexGen.py
index 1969d085d..da2c11531 100644
--- a/src/LexGen.py
+++ b/src/LexGen.py
@@ -1,19 +1,19 @@
 # LexGen.py - implemented 2002 by Neil Hodgson neilh@scintilla.org
 # Released to the public domain.
 
-# Regenerate the Scintilla and SciTE source files that list 
-# all the lexers and all the properties files. 
+# Regenerate the Scintilla and SciTE source files that list
+# all the lexers and all the properties files.
 # Should be run whenever a new lexer is added or removed.
 # Requires Python 2.1 or later
 # Most files are regenerated in place with templates stored in comments.
-# The VS .NET project file is generated into a different file as the 
+# The VS .NET project file is generated into a different file as the
 # VS .NET environment will not retain comments when modifying the file.
-# The files are copied to a string apart from sections between a 
-# ++Autogenerated comment and a --Autogenerated comment which is 
+# The files are copied to a string apart from sections between a
+# ++Autogenerated comment and a --Autogenerated comment which is
 # generated by the CopyWithInsertion function. After the whole
 # string is instantiated, it is compared with the target file and
 # if different the file is rewritten.
-# Does not regenerate the Visual C++ 6 project files but does the VS .NET 
+# Does not regenerate the Visual C++ 6 project files but does the VS .NET
 # project file.
 
 import string
@@ -21,7 +21,7 @@ import sys
 import os
 import glob
 
-# Automatically generated sections contain start and end comments, 
+# Automatically generated sections contain start and end comments,
 # a definition line and the results.
 # The results are replaced by regenerating based on the definition line.
 # The definition line is a comment prefix followed by "**".
@@ -90,7 +90,14 @@ def UpdateFile(filename, updated):
 	""" If the file is different to updated then copy updated
 	into the file else leave alone so CVS and make don't treat
 	it as modified. """
-	infile = open(filename, "rb")
+	try:
+		infile = open(filename, "rb")
+	except IOError:	# File is not there yet
+		out = open(filename, "wb")
+		out.write(updated)
+		out.close()
+		print "New", filename
+		return
 	original = infile.read()
 	infile.close()
 	if updated != original:
@@ -99,7 +106,7 @@ def UpdateFile(filename, updated):
 		out.write(updated)
 		out.close()
 		print "Changed", filename
-	
+
 def RegenerateOverLists(inpath, outpath, commentPrefix, crlf, *lists):
 	try:
 		infile = open(inpath, "rb")
@@ -109,7 +116,7 @@ def RegenerateOverLists(inpath, outpath, commentPrefix, crlf, *lists):
 	original = infile.read()
 	infile.close()
 	contents = original.replace("\r\n", "\n")
-	updated = CopyWithInsertion(contents, commentPrefix, 
+	updated = CopyWithInsertion(contents, commentPrefix,
 		inpath == outpath, *lists)
 	if crlf:
 		updated = updated.replace("\n", "\r\n")