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 #ifndef CHROMEOS_SYSTEM_NAME_VALUE_PAIRS_PARSER_H_ 6 #define CHROMEOS_SYSTEM_NAME_VALUE_PAIRS_PARSER_H_ 7 8 #include <map> 9 #include <string> 10 11 #include "base/basictypes.h" 12 #include "chromeos/chromeos_export.h" 13 14 namespace base { 15 class FilePath; 16 } 17 18 namespace chromeos { 19 namespace system { 20 21 // The parser is used to get machine info as name-value pairs. Defined 22 // here to be accessible by tests. 23 class CHROMEOS_EXPORT NameValuePairsParser { 24 public: 25 typedef std::map<std::string, std::string> NameValueMap; 26 27 // The obtained info will be written into the given map. 28 explicit NameValuePairsParser(NameValueMap* map); 29 30 void AddNameValuePair(const std::string& key, const std::string& value); 31 32 // Executes tool and inserts (key, <output>) into map_. 33 // The program name (argv[0]) should be an absolute path. The function 34 // checks if the program exists before executing it as some programs 35 // don't exist on Linux desktop; returns false in that case. 36 bool GetSingleValueFromTool(int argc, const char* argv[], 37 const std::string& key); 38 39 // Parses name-value pairs from the file. 40 // Returns false if there was any error in the file. Valid pairs will still be 41 // added to the map. 42 bool GetNameValuePairsFromFile(const base::FilePath& file_path, 43 const std::string& eq, 44 const std::string& delim); 45 46 // These will parse strings with output in the format: 47 // <key><EQ><value><DELIM>[<key><EQ><value>][...] 48 // e.g. ParseNameValuePairs("key1=value1 key2=value2", "=", " ") 49 // Returns false if there was any error in in_string. Valid pairs will still 50 // be added to the map. 51 bool ParseNameValuePairs(const std::string& in_string, 52 const std::string& eq, 53 const std::string& delim); 54 55 // This version allows for values which end with a comment 56 // beginning with comment_delim. 57 // e.g. "key2=value2 # Explanation of value\n" 58 // Returns false if there was any error in in_string. Valid pairs will still 59 // be added to the map. 60 bool ParseNameValuePairsWithComments(const std::string& in_string, 61 const std::string& eq, 62 const std::string& delim, 63 const std::string& comment_delim); 64 65 // Same as ParseNameValuePairsWithComments(), but uses the output of the given 66 // tool as the input to parse. 67 bool ParseNameValuePairsFromTool( 68 int argc, 69 const char* argv[], 70 const std::string& eq, 71 const std::string& delim, 72 const std::string& comment_delim); 73 74 private: 75 NameValueMap* map_; 76 77 DISALLOW_COPY_AND_ASSIGN(NameValuePairsParser); 78 }; 79 80 } // namespace system 81 } // namespace chromeos 82 83 #endif // CHROMEOS_SYSTEM_NAME_VALUE_PAIRS_PARSER_H_ 84
