1 //===-- UriParser.cpp -----------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "lldb/Utility/UriParser.h" 10 #include "llvm/Support/raw_ostream.h" 11 12 #include <string> 13 14 #include <cstdint> 15 #include <tuple> 16 17 using namespace lldb_private; 18 19 llvm::raw_ostream &lldb_private::operator<<(llvm::raw_ostream &OS, 20 const URI &U) { 21 OS << U.scheme << "://[" << U.hostname << ']'; 22 if (U.port) 23 OS << ':' << U.port.getValue(); 24 return OS << U.path; 25 } 26 27 llvm::Optional<URI> URI::Parse(llvm::StringRef uri) { 28 URI ret; 29 30 const llvm::StringRef kSchemeSep("://"); 31 auto pos = uri.find(kSchemeSep); 32 if (pos == std::string::npos) 33 return llvm::None; 34 35 // Extract path. 36 ret.scheme = uri.substr(0, pos); 37 auto host_pos = pos + kSchemeSep.size(); 38 auto path_pos = uri.find('/', host_pos); 39 if (path_pos != std::string::npos) 40 ret.path = uri.substr(path_pos); 41 else 42 ret.path = "/"; 43 44 auto host_port = uri.substr( 45 host_pos, 46 ((path_pos != std::string::npos) ? path_pos : uri.size()) - host_pos); 47 48 // Extract hostname 49 if (!host_port.empty() && host_port[0] == '[') { 50 // hostname is enclosed with square brackets. 51 pos = host_port.rfind(']'); 52 if (pos == std::string::npos) 53 return llvm::None; 54 55 ret.hostname = host_port.substr(1, pos - 1); 56 host_port = host_port.drop_front(pos + 1); 57 if (!host_port.empty() && !host_port.consume_front(":")) 58 return llvm::None; 59 } else { 60 std::tie(ret.hostname, host_port) = host_port.split(':'); 61 } 62 63 // Extract port 64 if (!host_port.empty()) { 65 uint16_t port_value = 0; 66 if (host_port.getAsInteger(0, port_value)) 67 return llvm::None; 68 ret.port = port_value; 69 } else 70 ret.port = llvm::None; 71 72 return ret; 73 } 74