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| 1 // Copyright (c) 2012 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 "chromeos/system/name_value_pairs_parser.h" | |
| 6 | |
| 7 #include "base/command_line.h" | |
| 8 #include "base/file_util.h" | |
| 9 #include "base/files/file_path.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/process_util.h" | |
| 12 #include "base/stl_util.h" | |
| 13 #include "base/string_util.h" | |
| 14 #include "base/strings/string_tokenizer.h" | |
| 15 | |
| 16 namespace chromeos { // NOLINT | |
| 17 namespace system { | |
| 18 | |
| 19 namespace { | |
| 20 | |
| 21 const char kQuoteChars[] = "\""; | |
| 22 const char kTrimChars[] = "\" "; | |
| 23 | |
| 24 bool GetToolOutput(int argc, const char* argv[], std::string& output) { | |
| 25 DCHECK_GE(argc, 1); | |
| 26 | |
| 27 if (!file_util::PathExists(base::FilePath(argv[0]))) { | |
| 28 LOG(WARNING) << "Tool for statistics not found: " << argv[0]; | |
| 29 return false; | |
| 30 } | |
| 31 | |
| 32 std::vector<std::string> args; | |
| 33 for (int argn = 0; argn < argc; ++argn) | |
| 34 args.push_back(argv[argn]); | |
| 35 if (!base::GetAppOutput(args, &output)) { | |
| 36 LOG(WARNING) << "Error executing " << argv[0]; | |
| 37 return false; | |
| 38 } | |
| 39 | |
| 40 return true; | |
| 41 } | |
| 42 | |
| 43 } // namespace | |
| 44 | |
| 45 NameValuePairsParser::NameValuePairsParser(NameValueMap* map) | |
| 46 : map_(map) { | |
| 47 } | |
| 48 | |
| 49 void NameValuePairsParser::AddNameValuePair(const std::string& key, | |
| 50 const std::string& value) { | |
| 51 if (!ContainsKey(*map_, key)) { | |
| 52 (*map_)[key] = value; | |
| 53 VLOG(1) << "name: " << key << ", value: " << value; | |
| 54 } else { | |
| 55 LOG(WARNING) << "Key " << key << " already has value " << (*map_)[key] | |
| 56 << ", ignoring new value: " << value; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 bool NameValuePairsParser::ParseNameValuePairs(const std::string& in_string, | |
| 61 const std::string& eq, | |
| 62 const std::string& delim) { | |
| 63 return ParseNameValuePairsWithComments(in_string, eq, delim, ""); | |
| 64 } | |
| 65 | |
| 66 bool NameValuePairsParser::ParseNameValuePairsWithComments( | |
| 67 const std::string& in_string, | |
| 68 const std::string& eq, | |
| 69 const std::string& delim, | |
| 70 const std::string& comment_delim) { | |
| 71 bool all_valid = true; | |
| 72 // Set up the pair tokenizer. | |
| 73 base::StringTokenizer pair_toks(in_string, delim); | |
| 74 pair_toks.set_quote_chars(kQuoteChars); | |
| 75 // Process token pairs. | |
| 76 while (pair_toks.GetNext()) { | |
| 77 std::string pair(pair_toks.token()); | |
| 78 // Anything before the first |eq| is the key, anything after is the value. | |
| 79 // |eq| must exist. | |
| 80 size_t eq_pos = pair.find(eq); | |
| 81 if (eq_pos != std::string::npos) { | |
| 82 // First |comment_delim| after |eq_pos| starts the comment. | |
| 83 // A value of |std::string::npos| means that the value spans to the end | |
| 84 // of |pair|. | |
| 85 size_t value_size = std::string::npos; | |
| 86 if (!comment_delim.empty()) { | |
| 87 size_t comment_pos = pair.find(comment_delim, eq_pos + 1); | |
| 88 if (comment_pos != std::string::npos) | |
| 89 value_size = comment_pos - eq_pos - 1; | |
| 90 } | |
| 91 | |
| 92 std::string key; | |
| 93 std::string value; | |
| 94 TrimString(pair.substr(0, eq_pos), kTrimChars, &key); | |
| 95 TrimString(pair.substr(eq_pos + 1, value_size), kTrimChars, &value); | |
| 96 | |
| 97 if (!key.empty()) { | |
| 98 AddNameValuePair(key, value); | |
| 99 continue; | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 LOG(WARNING) << "Invalid token pair: " << pair << ". Ignoring."; | |
| 104 all_valid = false; | |
| 105 } | |
| 106 return all_valid; | |
| 107 } | |
| 108 | |
| 109 bool NameValuePairsParser::GetSingleValueFromTool(int argc, | |
| 110 const char* argv[], | |
| 111 const std::string& key) { | |
| 112 std::string output_string; | |
| 113 if (!GetToolOutput(argc, argv, output_string)) | |
| 114 return false; | |
| 115 | |
| 116 TrimWhitespaceASCII(output_string, TRIM_ALL, &output_string); | |
| 117 AddNameValuePair(key, output_string); | |
| 118 return true; | |
| 119 } | |
| 120 | |
| 121 bool NameValuePairsParser::GetNameValuePairsFromFile( | |
| 122 const base::FilePath& file_path, | |
| 123 const std::string& eq, | |
| 124 const std::string& delim) { | |
| 125 std::string contents; | |
| 126 if (file_util::ReadFileToString(file_path, &contents)) { | |
| 127 return ParseNameValuePairs(contents, eq, delim); | |
| 128 } else { | |
| 129 LOG(WARNING) << "Unable to read statistics file: " << file_path.value(); | |
| 130 return false; | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 bool NameValuePairsParser::ParseNameValuePairsFromTool( | |
| 135 int argc, | |
| 136 const char* argv[], | |
| 137 const std::string& eq, | |
| 138 const std::string& delim, | |
| 139 const std::string& comment_delim) { | |
| 140 std::string output_string; | |
| 141 if (!GetToolOutput(argc, argv, output_string)) | |
| 142 return false; | |
| 143 | |
| 144 return ParseNameValuePairsWithComments( | |
| 145 output_string, eq, delim, comment_delim); | |
| 146 } | |
| 147 | |
| 148 } // namespace system | |
| 149 } // namespace chromeos | |
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Chromium Code Reviews
Issue 14642018:
Revert 197960 "[chromeos] Remove dependencies of StatisticsProvi..." (Closed)
Base URL: svn://svn.chromium.org/chrome/