Temporary README file describing the steps to generate error messages. This...

Temporary README file describing the steps to generate error messages. This file will be removed when the process is automated/ the tools work on more platforms.


git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@174541 13f79535-47bb-0310-9956-ffa450edef68

tools/NLS/README

+Error messages in Xerces are generated by tools\NLS\Xlat, which currently runs
+on windows. 
+
+Here are the steps:
+1) Modify XMLErrList_EN_US.Xml as per the changes
+2) Compile all the files in tools\NLS\Xlat and link them all into an
+   executable (Xlat.cpp has the main())
+3) Run this Xlat executable with parameter:
+     /SrcRoot=x:/xerces-c-src/ /OutPath=x:/output/ /OutFmt=KKK/Locale=EN_US
+     where:
+        i. SrcRoot should point to XERCESCROOT
+       ii. OutPath should be any output folder that stores that generated
+           files
+      iii. Run it four times by setting OutFmt=Win32RC, OutFmt=CppSrc,
+           OutFmt=ResBundle, OutFmt=MsgCat, respectively
+
+4) Then the following files will be generated, and must be copied to their 
+   appropriate location:
+     i. en_US.txt  - copy this file to 
+        \src\xercesc\util\MsgLoaders\ICU\resources
+    ii. XercesMessages_en_US.hpp  - copy this file to
+        \src\xercesc\util\MsgLoaders\InMemory
+   iii. XercesMessages_en_US.Msg - copy this file to
+        src\xercesc\util\MsgLoaders\MsgCatalog
+    iv. XMLDOMMsg.hpp - copy this file to src\xercesc\util
+     v. XMLErrorCodes.hpp - copy this file to src\xercesc\framework
+    vi. XMLExceptMsgs.hpp - copy this file to src\xercesc\util
+   vii. XMLMsgCat_Ids.hpp - copy this file to
+        src\xercesc\util\MsgLoaders\MsgCatalog
+  viii. XMLValidityCodes.hpp - copy this file to src\xercesc\framework
+    ix. CppErrMsgs_en_US.RC - copy the entire file and
+        replace the content  
+        appearing between the line which reads:
+           #endif    // APSTUDIO_INVOKED
+        and the line which reads: 
+           #endif    // English (U.S.) resources
+        in src\xercesc\util\Platforms\Win32\version.rc
+        What you replace should begin with:
+         // ----------------------------------------------------------------
+         //  This file was generated from the XML error message source.
+         
+
+Note: If you run Xlat on windows, and are commiting them under unix, you must
+      first run dos2unix on them.