update the intl.* files directly from genlang.py script instead of generating snippets which had then to be manually pasted in

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61342 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

misc/languages/genlang.py

@@ -1,17 +1,23 @@
 #!/usr/bin/env python
 
+# Run this script from top-level wxWidgets directory to update the contents of
+# include/wx/intl.h and src/common/intl.cpp using information from langtabl.txt
 #
-# This script must be ran from misc/languages subdirectory.
-#
-# It generates wxLanguage enum (to be cut&pasted to include/wx/intl.h)
-# and conversion tables (ditto to src/common/intl.cpp)
-#
+# Warning: error detection and reporting here is rudimentary, check if the
+# files were updated correctly with "svn diff" before committing them!
 
+import os
 import string
+import sys
 
 def ReadTable():
     table = []
-    f = open('langtabl.txt')
+    try:
+        f = open('misc/languages/langtabl.txt')
+    except:
+        print "Did you run the script from top-level wxWidgets directory?"
+        raise
+
     for i in f.readlines():
         ispl = i.split()
         table.append((ispl[0], ispl[1], ispl[2], ispl[3], ispl[4], string.join(ispl[5:])))
@@ -19,12 +25,8 @@ def ReadTable():
     return table
 
 
-def GenEnum(table):
-   f = open('_wxlang.h', 'wt')
+def WriteEnum(f, table):
    f.write("""
-
-// --- --- --- generated code begins here --- --- ---
-
 /**
     The languages supported by wxLocale.
 
@@ -50,13 +52,10 @@ enum wxLanguage
     wxLANGUAGE_USER_DEFINED
 };
 
-// --- --- --- generated code ends here --- --- ---
-
 """)
-   f.close()
 
 
-def GenTable(table):
+def WriteTable(f, table):
    all_langs = []
    all_sublangs = []
 
@@ -88,10 +87,7 @@ def GenTable(table):
        if s != '0' and s != 'SUBLANG_DEFAULT':
            ifdefs += '#ifndef %s\n#define %s SUBLANG_DEFAULT\n#endif\n' % (s, s)
 
-   f = open('_wxlang.cpp', 'wt')
    f.write("""
-// --- --- --- generated code begins here --- --- ---
-
 // This table is generated by misc/languages/genlang.py
 // When making changes, please put them into misc/languages/langtabl.txt
 
@@ -125,15 +121,50 @@ void wxLocale::InitLanguagesDB()
 }
 #undef LNG
 
-// --- --- --- generated code ends here --- --- ---
-
 """ % (ifdefs, lngtable))
-   f.close()
 
 
+def ReplaceGeneratedPartOfFile(fname, func):
+    """
+        Replaces the part of file marked with the special comments with the
+        output of func.
 
+        fname is the name of the input file and func must be a function taking
+        a file and language table on input and writing the appropriate chunk to
+        this file, e.g. WriteEnum or WriteTable.
+    """
+    fin = open(fname, 'rt')
+    fnameNew = fname + '.new'
+    fout = open(fnameNew, 'wt')
+    betweenBeginAndEnd = 0
+    afterEnd = 0
+    for l in fin.readlines():
+        if l == '// --- --- --- generated code begins here --- --- ---\n':
+            if betweenBeginAndEnd or afterEnd:
+                print 'Unexpected starting comment.'
+            betweenBeginAndEnd = 1
+            fout.write(l)
+            func(fout, table)
+        elif l == '// --- --- --- generated code ends here --- --- ---\n':
+            if not betweenBeginAndEnd:
+                print 'End comment found before the starting one?'
+                break
 
+            betweenBeginAndEnd = 0
+            afterEnd = 1
+
+        if not betweenBeginAndEnd:
+            fout.write(l)
+
+    if not afterEnd:
+        print 'Failed to process %s.' % fname
+        os.remove(fnameNew)
+        sys.exit(1)
+
+    os.remove(fname)
+    os.rename(fnameNew, fname)
 
 table = ReadTable()
-GenEnum(table)          # the enum is used also (thanks to doxygen) in the docs
-GenTable(table)
+ReplaceGeneratedPartOfFile('include/wx/intl.h', WriteEnum)
+ReplaceGeneratedPartOfFile('interface/wx/intl.h', WriteEnum)
+ReplaceGeneratedPartOfFile('src/common/intl.cpp', WriteTable)