kc3-lang/angle/src/common/string_utils.cpp

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• Author : Corentin Wallez
  Date : 2015-11-24 11:15:57
  Hash : 47ac69c1
  Message : Update gpu_test_expectations to support OSX 10.11 On the Chromium side there was also a large refactor of SplitString. This patch includes a replication of that refactor in string_utils and adds the Chromium unittests to string_utils_unittests.cpp BUG=angleproject:1234 Change-Id: I4f71064fbf325c204e98a7b36ead118913d90f2c Reviewed-on: https://chromium-review.googlesource.com/314101 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>

• src/common/string_utils.cpp

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // string_utils:
  //   String helper functions.
  //
  
  #include "string_utils.h"
  
  #include <fstream>
  #include <sstream>
  
  namespace angle
  {
  
  const char kWhitespaceASCII[] = " \f\n\r\t\v";
  
  std::vector<std::string> SplitString(const std::string &input,
                                       const std::string &delimiters,
                                       WhitespaceHandling whitespace,
                                       SplitResult resultType)
  {
      std::vector<std::string> result;
      if (input.empty())
      {
          return result;
      }
  
      std::string::size_type start = 0;
      while (start != std::string::npos)
      {
          auto end = input.find_first_of(delimiters, start);
  
          std::string piece;
          if (end == std::string::npos)
          {
              piece = input.substr(start);
              start = std::string::npos;
          }
          else
          {
              piece = input.substr(start, end - start);
              start = end + 1;
          }
  
          if (whitespace == TRIM_WHITESPACE)
          {
              piece = TrimString(piece, kWhitespaceASCII);
          }
  
          if (resultType == SPLIT_WANT_ALL || !piece.empty())
          {
              result.push_back(piece);
          }
      }
  
      return result;
  }
  
  void SplitStringAlongWhitespace(const std::string &input,
                                  std::vector<std::string> *tokensOut)
  {
  
      std::istringstream stream(input);
      std::string line;
  
      while (std::getline(stream, line))
      {
          size_t prev = 0, pos;
          while ((pos = line.find_first_of(kWhitespaceASCII, prev)) != std::string::npos)
          {
              if (pos > prev)
                  tokensOut->push_back(line.substr(prev, pos - prev));
              prev = pos + 1;
          }
          if (prev < line.length())
              tokensOut->push_back(line.substr(prev, std::string::npos));
      }
  }
  
  std::string TrimString(const std::string &input, const std::string &trimChars)
  {
      auto begin = input.find_first_not_of(trimChars);
      if (begin == std::string::npos)
      {
          return "";
      }
  
      std::string::size_type end = input.find_last_not_of(trimChars);
      if (end == std::string::npos)
      {
          return input.substr(begin);
      }
  
      return input.substr(begin, end - begin + 1);
  }
  
  bool HexStringToUInt(const std::string &input, unsigned int *uintOut)
  {
      unsigned int offset = 0;
  
      if (input.size() >= 2 && input[0] == '0' && input[1] == 'x')
      {
          offset = 2u;
      }
  
      // Simple validity check
      if (input.find_first_not_of("0123456789ABCDEFabcdef", offset) != std::string::npos)
      {
          return false;
      }
  
      std::stringstream inStream(input);
      inStream >> std::hex >> *uintOut;
      return !inStream.fail();
  }
  
  bool ReadFileToString(const std::string &path, std::string *stringOut)
  {
      std::ifstream inFile(path.c_str());
      if (inFile.fail())
      {
          return false;
      }
  
      inFile.seekg(0, std::ios::end);
      stringOut->reserve(static_cast<std::string::size_type>(inFile.tellg()));
      inFile.seekg(0, std::ios::beg);
  
      stringOut->assign(std::istreambuf_iterator<char>(inFile), std::istreambuf_iterator<char>());
      return !inFile.fail();
  }
  
  }