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authortimsteele@google.com <timsteele@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2010-01-21 19:29:25 +0000
committertimsteele@google.com <timsteele@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2010-01-21 19:29:25 +0000
commit0477554f0623c67b163f6fb5cf1ce2c0d53ee4aa (patch)
tree1e6ece023782452db351251e7d3df5926f6eea3b /base/string_split.cc
parent811cb260aea2b6edea92e3b900945b55570c75d4 (diff)
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Move two generic string split functions from sync API to their own API in base/string_split.
BUG=None TEST=base_unittests Original patch by Thiago Farina Original Review: http://codereview.chromium.org/464075 Review URL: http://codereview.chromium.org/502074 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@36774 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/string_split.cc')
-rw-r--r--base/string_split.cc68
1 files changed, 68 insertions, 0 deletions
diff --git a/base/string_split.cc b/base/string_split.cc
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--- /dev/null
+++ b/base/string_split.cc
@@ -0,0 +1,68 @@
+// 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.
+
+#include "base/string_split.h"
+
+#include "base/string_util.h"
+
+namespace base {
+
+bool SplitStringIntoKeyValues(
+ const std::string& line,
+ char key_value_delimiter,
+ std::string* key, std::vector<std::string>* values) {
+ key->clear();
+ values->clear();
+
+ // find the key string
+ size_t end_key_pos = line.find_first_of(key_value_delimiter);
+ if (end_key_pos == std::string::npos) {
+ DLOG(INFO) << "cannot parse key from line: " << line;
+ return false; // no key
+ }
+ key->assign(line, 0, end_key_pos);
+
+ // find the values string
+ std::string remains(line, end_key_pos, line.size() - end_key_pos);
+ size_t begin_values_pos = remains.find_first_not_of(key_value_delimiter);
+ if (begin_values_pos == std::string::npos) {
+ DLOG(INFO) << "cannot parse value from line: " << line;
+ return false; // no value
+ }
+ std::string values_string(remains, begin_values_pos,
+ remains.size() - begin_values_pos);
+
+ // construct the values vector
+ values->push_back(values_string);
+ return true;
+}
+
+bool SplitStringIntoKeyValuePairs(
+ const std::string& line,
+ char key_value_delimiter,
+ char key_value_pair_delimiter,
+ std::vector<std::pair<std::string, std::string> >* kv_pairs) {
+ kv_pairs->clear();
+
+ std::vector<std::string> pairs;
+ SplitString(line, key_value_pair_delimiter, &pairs);
+
+ bool success = true;
+ for (size_t i = 0; i < pairs.size(); ++i) {
+ std::string key;
+ std::vector<std::string> value;
+ if (!SplitStringIntoKeyValues(pairs[i],
+ key_value_delimiter,
+ &key, &value)) {
+ // Don't return here, to allow for keys without associated
+ // values; just record that our split failed.
+ success = false;
+ }
+ DCHECK_LE(value.size(), 1U);
+ kv_pairs->push_back(make_pair(key, value.empty()? "" : value[0]));
+ }
+ return success;
+}
+
+} // namespace base