1 // Copyright (c) 2010 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 #include "base/string_split.h"
6
7 #include "base/string_util.h"
8
9 namespace base {
10
SplitStringIntoKeyValues(const std::string & line,char key_value_delimiter,std::string * key,std::vector<std::string> * values)11 bool SplitStringIntoKeyValues(
12 const std::string& line,
13 char key_value_delimiter,
14 std::string* key, std::vector<std::string>* values) {
15 key->clear();
16 values->clear();
17
18 // find the key string
19 size_t end_key_pos = line.find_first_of(key_value_delimiter);
20 if (end_key_pos == std::string::npos) {
21 DLOG(INFO) << "cannot parse key from line: " << line;
22 return false; // no key
23 }
24 key->assign(line, 0, end_key_pos);
25
26 // find the values string
27 std::string remains(line, end_key_pos, line.size() - end_key_pos);
28 size_t begin_values_pos = remains.find_first_not_of(key_value_delimiter);
29 if (begin_values_pos == std::string::npos) {
30 DLOG(INFO) << "cannot parse value from line: " << line;
31 return false; // no value
32 }
33 std::string values_string(remains, begin_values_pos,
34 remains.size() - begin_values_pos);
35
36 // construct the values vector
37 values->push_back(values_string);
38 return true;
39 }
40
SplitStringIntoKeyValuePairs(const std::string & line,char key_value_delimiter,char key_value_pair_delimiter,std::vector<std::pair<std::string,std::string>> * kv_pairs)41 bool SplitStringIntoKeyValuePairs(
42 const std::string& line,
43 char key_value_delimiter,
44 char key_value_pair_delimiter,
45 std::vector<std::pair<std::string, std::string> >* kv_pairs) {
46 kv_pairs->clear();
47
48 std::vector<std::string> pairs;
49 SplitString(line, key_value_pair_delimiter, &pairs);
50
51 bool success = true;
52 for (size_t i = 0; i < pairs.size(); ++i) {
53 std::string key;
54 std::vector<std::string> value;
55 if (!SplitStringIntoKeyValues(pairs[i],
56 key_value_delimiter,
57 &key, &value)) {
58 // Don't return here, to allow for keys without associated
59 // values; just record that our split failed.
60 success = false;
61 }
62 DCHECK_LE(value.size(), 1U);
63 kv_pairs->push_back(make_pair(key, value.empty()? "" : value[0]));
64 }
65 return success;
66 }
67
68 } // namespace base
69