Source/cmPlistParser.cxx

   1 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   2    file Copyright.txt or https://cmake.org/licensing for details.  */
   3 #include "cmPlistParser.h"
   4
   5 #include <cm3p/json/reader.h>
   6 #include <cm3p/json/value.h>
   7
   8 #include "cmUVProcessChain.h"
   9 #include "cmUVStream.h"
  10
  11 cm::optional<Json::Value> cmParsePlist(const std::string& filename)
  12 {
  13   cmUVProcessChainBuilder builder;
  14   builder.AddCommand(
  15     { "/usr/bin/plutil", "-convert", "json", "-o", "-", filename });
  16   builder.SetBuiltinStream(cmUVProcessChainBuilder::Stream_OUTPUT);
  17
  18   auto chain = builder.Start();
  19   chain.Wait();
  20
  21   auto const& status = chain.GetStatus(0);
  22   if (status.ExitStatus != 0) {
  23     return cm::nullopt;
  24   }
  25
  26   Json::Reader reader;
  27   Json::Value value;
  28   cmUVPipeIStream outputStream(chain.GetLoop(), chain.OutputStream());
  29   if (!reader.parse(outputStream, value)) {
  30     return cm::nullopt;
  31   }
  32   return cm::optional<Json::Value>(value);
  33 }