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 BASE_STRINGS_STRING_SPLIT_H_ 6 #define BASE_STRINGS_STRING_SPLIT_H_ 7 8 #include <string> 9 #include <utility> 10 #include <vector> 11 12 #include "base/base_export.h" 13 #include "base/strings/string16.h" 14 15 namespace base { 16 17 // Splits |str| into a vector of strings delimited by |c|, placing the results 18 // in |r|. If several instances of |c| are contiguous, or if |str| begins with 19 // or ends with |c|, then an empty string is inserted. 20 // 21 // Every substring is trimmed of any leading or trailing white space. 22 // NOTE: |c| must be in BMP (Basic Multilingual Plane) 23 BASE_EXPORT void SplitString(const string16& str, 24 char16 c, 25 std::vector<string16>* r); 26 27 // |str| should not be in a multi-byte encoding like Shift-JIS or GBK in which 28 // the trailing byte of a multi-byte character can be in the ASCII range. 29 // UTF-8, and other single/multi-byte ASCII-compatible encodings are OK. 30 // Note: |c| must be in the ASCII range. 31 BASE_EXPORT void SplitString(const std::string& str, 32 char c, 33 std::vector<std::string>* r); 34 35 typedef std::vector<std::pair<std::string, std::string> > StringPairs; 36 37 // Splits |line| into key value pairs according to the given delimiters and 38 // removes whitespace leading each key and trailing each value. Returns true 39 // only if each pair has a non-empty key and value. |key_value_pairs| will 40 // include ("","") pairs for entries without |key_value_delimiter|. 41 BASE_EXPORT bool SplitStringIntoKeyValuePairs(const std::string& line, 42 char key_value_delimiter, 43 char key_value_pair_delimiter, 44 StringPairs* key_value_pairs); 45 46 // The same as SplitString, but use a substring delimiter instead of a char. 47 BASE_EXPORT void SplitStringUsingSubstr(const string16& str, 48 const string16& s, 49 std::vector<string16>* r); 50 BASE_EXPORT void SplitStringUsingSubstr(const std::string& str, 51 const std::string& s, 52 std::vector<std::string>* r); 53 54 // The same as SplitString, but don't trim white space. 55 // NOTE: |c| must be in BMP (Basic Multilingual Plane) 56 BASE_EXPORT void SplitStringDontTrim(const string16& str, 57 char16 c, 58 std::vector<string16>* r); 59 // |str| should not be in a multi-byte encoding like Shift-JIS or GBK in which 60 // the trailing byte of a multi-byte character can be in the ASCII range. 61 // UTF-8, and other single/multi-byte ASCII-compatible encodings are OK. 62 // Note: |c| must be in the ASCII range. 63 BASE_EXPORT void SplitStringDontTrim(const std::string& str, 64 char c, 65 std::vector<std::string>* r); 66 67 // WARNING: this uses whitespace as defined by the HTML5 spec. If you need 68 // a function similar to this but want to trim all types of whitespace, then 69 // factor this out into a function that takes a string containing the characters 70 // that are treated as whitespace. 71 // 72 // Splits the string along whitespace (where whitespace is the five space 73 // characters defined by HTML 5). Each contiguous block of non-whitespace 74 // characters is added to result. 75 BASE_EXPORT void SplitStringAlongWhitespace(const string16& str, 76 std::vector<string16>* result); 77 BASE_EXPORT void SplitStringAlongWhitespace(const std::string& str, 78 std::vector<std::string>* result); 79 80 } // namespace base 81 82 #endif // BASE_STRINGS_STRING_SPLIT_H_ 83
