native_client_sdk/src/libraries/sdk_util/string_util.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef LIBRARIES_SDK_UTIL_STRING_UTIL_H_
   6 #define LIBRARIES_SDK_UTIL_STRING_UTIL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 namespace sdk_util {
  12
  13 // Splits |str| into a vector of strings delimited by |c|, placing the results
  14 // in |r|. If several instances of |c| are contiguous, or if |str| begins with
  15 // or ends with |c|, then an empty string is inserted. If |str| is empty, then
  16 // no strings are inserted.
  17 //
  18 // NOTE: Unlike Chrome's base::SplitString, this DOES NOT trim white space.
  19 inline void SplitString(const std::string& str,
  20                         char c,
  21                         std::vector<std::string>* r) {
  22   r->clear();
  23   size_t last = 0;
  24   size_t size = str.size();
  25   for (size_t i = 0; i <= size; ++i) {
  26     if (i == size || str[i] == c) {
  27       std::string tmp(str, last, i - last);
  28       // Avoid converting an empty source string into a vector of one empty
  29       // string.
  30       if (i != size || !r->empty() || !tmp.empty())
  31         r->push_back(tmp);
  32       last = i + 1;
  33     }
  34   }
  35 }
  36
  37 }  // namespace sdk_util
  38
  39 #endif  // LIBRARIES_SDK_UTIL_STRING_UTIL_H_