[OTS] Make standalone tools compile on Mac

src/cff_type2_charstring.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A parser for the Type 2 Charstring Format.
 // http://www.adobe.com/devnet/font/pdfs/5177.Type2.pdf
 
 #include "cff_type2_charstring.h"
 
 #include <climits>
@@ skipping 20 matching lines @@
 bool ExecuteType2CharString(size_t call_depth,
                             const ots::CFFIndex& global_subrs_index,
                             const ots::CFFIndex& local_subrs_index,
                             ots::Buffer *cff_table,
                             ots::Buffer *char_string,
                             std::stack<int32_t> *argument_stack,
                             bool *out_found_endchar,
                             bool *out_found_width,
                             size_t *in_out_num_stems);
 
+// TODO(ksakamoto): Remove the below function (looks like unused function).

[Yusuke Sato, 2013/04/03 07:40:32]

#if 0 does not look good. Please just remove the function if you're confident
that you won't use the debug function. Or, you could use -Wno-unused-function.

[Kunihiko Sakamoto, 2013/04/03 08:18:04]

Just removed it.

+#if 0
 // Converts |op| to a string and returns it.
 const char *Type2CharStringOperatorToString(ots::Type2CharStringOperator op) {
   switch (op) {
   case ots::kHStem:
     return "HStem";
   case ots::kVStem:
     return "VStem";
   case ots::kVMoveTo:
     return "VMoveTo";
   case ots::kRLineTo:
@@ skipping 81 matching lines @@
   case ots::kFlex:
     return "Flex";
   case ots::kHFlex1:
     return "HFlex1";
   case ots::kFlex1:
     return "Flex1";
   }
 
   return "UNKNOWN";
 }
+#endif
 
 // Read one or more bytes from the |char_string| buffer and stores the number
 // read on |out_number|. If the number read is an operator (ex 'vstem'), sets
 // true on |out_is_operator|. Returns true if the function read a number.
 bool ReadNextNumberFromType2CharString(ots::Buffer *char_string,
                                        int32_t *out_number,
                                        bool *out_is_operator) {
   uint8_t v = 0;
   if (!char_string->ReadU8(&v)) {
     return OTS_FAILURE();
@@ skipping 728 matching lines @@
       return OTS_FAILURE();
     }
     if (!found_endchar) {
       return OTS_FAILURE();
     }
   }
   return true;
 }
 
 }  // namespace ots