Add a MD5 checksum to the BDIC header....

third_party/hunspell/google/bdict_writer.cc

 // Copyright 2008 Google Inc. All Rights Reserved.
 
 #include "third_party/hunspell/google/bdict_writer.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "third_party/hunspell/google/bdict.h"
 
 namespace hunspell {
 
@@ skipping 446 matching lines @@
 
   // Fill the header last, now that we have the data.
   hunspell::BDict::Header* header =
       reinterpret_cast<hunspell::BDict::Header*>(&ret[0]);
   header->signature = hunspell::BDict::SIGNATURE;
   header->major_version = hunspell::BDict::MAJOR_VERSION;
   header->minor_version = hunspell::BDict::MINOR_VERSION;
   header->aff_offset = static_cast<uint32>(aff_offset);
   header->dic_offset = static_cast<uint32>(dic_offset);
 
+  // Write the MD5 digest of the affix information and the dictionary words at
+  // the end of the BDic header.
+  if (header->major_version >= 2)
+    MD5Sum(&ret[aff_offset], ret.size() - aff_offset, &header->digest);
+
   return ret;
 }
 
 void BDictWriter::SerializeAff(std::string* output) const {
   // Reserve enough room for the header.
   size_t header_offset = output->size();
   output->resize(output->size() + sizeof(hunspell::BDict::AffHeader));
 
   // Write the comment.
   output->push_back('\n');
@@ skipping 18 matching lines @@
   // Add the header now that we know the offsets.
   hunspell::BDict::AffHeader* header =
       reinterpret_cast<hunspell::BDict::AffHeader*>(&(*output)[header_offset]);
   header->affix_group_offset = static_cast<uint32>(affix_group_offset);
   header->affix_rule_offset = static_cast<uint32>(affix_rule_offset);
   header->rep_offset = static_cast<uint32>(rep_offset);
   header->other_offset = static_cast<uint32>(other_offset);
 }
 
 }  // namespace hunspell