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// Copyright 2013 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// A very simple commandline tool for decompressing woff2 format files to true
// type font files.

#include <string>

#include "./file.h"
#include "./woff2_dec.h"


int main(int argc, char **argv) {
  using std::string;

  if (argc != 2) {
    fprintf(stderr, "One argument, the input filename, must be provided.\n");
    return 1;
  }

  string filename(argv[1]);
  string outfilename = filename.substr(0, filename.find_last_of(".")) + ".ttf";

  string input = woff2::GetFileContent(filename);
  const uint8_t* raw_input = reinterpret_cast<const uint8_t*>(input.data());
  string output(std::min(woff2::ComputeWOFF2FinalSize(raw_input, input.size()),
                         woff2::kDefaultMaxSize), 0);
  woff2::WOFF2StringOut out(&output);

  const bool ok = woff2::ConvertWOFF2ToTTF(raw_input, input.size(), &out);

  if (ok) {
    woff2::SetFileContents(outfilename, output.begin(),
        output.begin() + out.Size());
  }
  return ok ? 0 : 1;
}