1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 25 // MARKER(update_precomp.py): autogen include statement, do not remove 26 #include "precompiled_shell.hxx" 27 #include <stdexcept> 28 #include <osl/diagnose.h> 29 #include "cmdline.hxx" 30 31 //--------------------------------- 32 /** Simple command line abstraction 33 */ 34 35 //################################ 36 // Creation 37 //################################ 38 39 40 CommandLine::CommandLine(size_t argc, char* argv[], const std::string& ArgPrefix) : 41 m_argc(argc), 42 m_argv(argv), 43 m_argprefix(ArgPrefix) 44 { 45 } 46 47 48 //################################ 49 // Query 50 //################################ 51 52 53 /** Return the argument count 54 */ 55 size_t CommandLine::get_arg_count() const 56 { 57 return m_argc; 58 } 59 60 /** Return an argument by index 61 This method doesn't skip argument 62 names if any, so if the second 63 argument is an argument name the 64 function nevertheless returns it. 65 66 @precond 0 <= Index < GetArgumentCount 67 68 @throws std::out_of_range exception 69 if the given index is to high 70 */ 71 std::string CommandLine::get_arg(size_t Index) const 72 { 73 OSL_PRECOND(Index < m_argc, "Index out of range"); 74 75 if (Index > (m_argc - 1)) 76 throw std::out_of_range("Invalid index"); 77 78 return m_argv[Index]; 79 } 80 81 82 /** Returns all argument name found in the 83 command line. An argument will be identified 84 by a specified prefix. The standard prefix 85 is '-'. 86 If the are no argument names the returned 87 container is empty. 88 */ 89 StringListPtr_t CommandLine::get_arg_names() const 90 { 91 StringListPtr_t arg_cont(new StringList_t()); 92 93 for (size_t i = 0; i < m_argc; i++) 94 { 95 std::string argn = m_argv[i]; 96 97 if (is_arg_name(argn)) 98 arg_cont->push_back(argn); 99 } 100 101 return arg_cont; 102 } 103 104 /** Returns an argument by name. If there are 105 duplicate argument names in the command line, 106 the first one wins. 107 Argument name an the argument value must be separated 108 by spaces. If the argument value starts with an 109 argument prefix use quotes else the return value is 110 an empty string because the value will be interpreted 111 as the next argument name. 112 If an argument value contains spaces use quotes. 113 114 @precond GetArgumentNames() -> has element ArgumentName 115 116 @throws std::invalid_argument exception 117 if the specified argument could not be 118 found 119 */ 120 std::string CommandLine::get_arg(const std::string& ArgumentName) const 121 { 122 std::string arg_value; 123 size_t i; 124 for ( i = 0; i < m_argc; i++) 125 { 126 std::string arg = m_argv[i]; 127 128 if (ArgumentName == arg && ((i+1) < m_argc) && !is_arg_name(m_argv[i+1])) 129 { 130 arg_value = m_argv[i+1]; 131 break; 132 } 133 } 134 135 if (i == m_argc) 136 throw std::invalid_argument("Invalid argument name"); 137 138 return arg_value; 139 } 140 141 142 //################################ 143 // Command 144 //################################ 145 146 147 /** Set the prefix used to identify arguments in 148 the command line. 149 150 @precond prefix is not empty 151 152 @throws std::invalid_argument exception if 153 the prefix is empty 154 */ 155 void CommandLine::set_arg_prefix(const std::string& Prefix) 156 { 157 OSL_PRECOND(Prefix.length(), "Empty argument prefix!"); 158 159 if (0 == Prefix.length()) 160 throw std::invalid_argument("Empty argument prefix not allowed"); 161 162 m_argprefix = Prefix; 163 } 164 165 166 /** Returns whether a given argument is an argument name 167 */ 168 bool CommandLine::is_arg_name(const std::string& Argument) const 169 { 170 return (0 == Argument.compare(0, m_argprefix.length(), m_argprefix)); 171 } 172