10 // Given a URL string, determine where the query string starts and ends.
13 // have a query string that is separated from the path by '?'. Finally, the URL
14 // could also have a '#'-separated URL fragment which is usually used by the
18 //    http://server.com/path/to/object - is the URL of the object,
19 //    ?k=v&foo=bar                     - URL query string
20 //    #fragment                        - URL fragment string
24 bool GetQueryStringPos(const std::string& url,  in GetQueryStringPos()  argument
28   size_t query_start = url.find_first_of("?#");  in GetQueryStringPos()
30     *query_pos = url.size();  in GetQueryStringPos()
38     size_t query_end = url.size();  in GetQueryStringPos()
41       if (url[query_start] == '?') {  in GetQueryStringPos()
42         size_t pos_fragment = url.find('#', query_start);  in GetQueryStringPos()
57 std::string url::TrimOffQueryString(std::string* url) {  in TrimOffQueryString()  argument
59   if (!GetQueryStringPos(*url, false, &query_pos, nullptr))  in TrimOffQueryString()
61   std::string query_string = url->substr(query_pos);  in TrimOffQueryString()
62   url->resize(query_pos);  in TrimOffQueryString()
66 std::string url::Combine(const std::string& url, const std::string& subpath) {  in Combine()  argument
67   return CombineMultiple(url, {subpath});  in Combine()
70 std::string url::CombineMultiple(const std::string& url,  in CombineMultiple()  argument
72   std::string result = url;  in CombineMultiple()
89 std::string url::GetQueryString(const std::string& url, bool remove_fragment) {  in GetQueryString()  argument
92   if (GetQueryStringPos(url, remove_fragment, &query_pos, &query_len)) {  in GetQueryString()
93     query_string = url.substr(query_pos, query_len);  in GetQueryString()
98 data_encoding::WebParamList url::GetQueryStringParameters(  in GetQueryStringParameters()
99     const std::string& url) {  in GetQueryStringParameters()  argument
101   std::string query_string = GetQueryString(url, true);  in GetQueryStringParameters()
107 std::string url::GetQueryStringValue(const std::string& url,  in GetQueryStringValue()  argument
109   return GetQueryStringValue(GetQueryStringParameters(url), name);  in GetQueryStringValue()
112 std::string url::GetQueryStringValue(const data_encoding::WebParamList& params,  in GetQueryStringValue()
121 std::string url::RemoveQueryString(const std::string& url,  in RemoveQueryString()  argument
124   if (!GetQueryStringPos(url, !remove_fragment_too, &query_pos, &query_len))  in RemoveQueryString()
125     return url;  in RemoveQueryString()
126   std::string result = url.substr(0, query_pos);  in RemoveQueryString()
128   if (fragment_pos < url.size()) {  in RemoveQueryString()
129     result += url.substr(fragment_pos);  in RemoveQueryString()
134 std::string url::AppendQueryParam(const std::string& url,  in AppendQueryParam()  argument
137   return AppendQueryParams(url, {{name, value}});  in AppendQueryParam()
140 std::string url::AppendQueryParams(const std::string& url,  in AppendQueryParams()  argument
143     return url;  in AppendQueryParams()
145   GetQueryStringPos(url, true, &query_pos, &query_len);  in AppendQueryParams()
147   std::string result = url.substr(0, fragment_pos);  in AppendQueryParams()
154   if (fragment_pos < url.size()) {  in AppendQueryParams()
155     result += url.substr(fragment_pos);  in AppendQueryParams()
160 bool url::HasQueryString(const std::string& url) {  in HasQueryString()  argument
162   GetQueryStringPos(url, true, &query_pos, &query_len);  in HasQueryString()