OptionValuePathMappings.cpp revision 360660
1//===-- OptionValuePathMappings.cpp -----------------------------*- C++ -*-===// 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/Interpreter/OptionValuePathMappings.h" 10 11#include "lldb/Host/FileSystem.h" 12#include "lldb/Host/StringConvert.h" 13#include "lldb/Utility/Args.h" 14#include "lldb/Utility/FileSpec.h" 15#include "lldb/Utility/Stream.h" 16 17using namespace lldb; 18using namespace lldb_private; 19namespace { 20static bool VerifyPathExists(const char *path) { 21 if (path && path[0]) 22 return FileSystem::Instance().Exists(path); 23 else 24 return false; 25} 26} 27 28void OptionValuePathMappings::DumpValue(const ExecutionContext *exe_ctx, 29 Stream &strm, uint32_t dump_mask) { 30 if (dump_mask & eDumpOptionType) 31 strm.Printf("(%s)", GetTypeAsCString()); 32 if (dump_mask & eDumpOptionValue) { 33 if (dump_mask & eDumpOptionType) 34 strm.Printf(" =%s", (m_path_mappings.GetSize() > 0) ? "\n" : ""); 35 m_path_mappings.Dump(&strm); 36 } 37} 38 39Status OptionValuePathMappings::SetValueFromString(llvm::StringRef value, 40 VarSetOperationType op) { 41 Status error; 42 Args args(value.str()); 43 const size_t argc = args.GetArgumentCount(); 44 45 switch (op) { 46 case eVarSetOperationClear: 47 Clear(); 48 NotifyValueChanged(); 49 break; 50 51 case eVarSetOperationReplace: 52 // Must be at least one index + 1 pair of paths, and the pair count must be 53 // even 54 if (argc >= 3 && (((argc - 1) & 1) == 0)) { 55 uint32_t idx = 56 StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX); 57 const uint32_t count = m_path_mappings.GetSize(); 58 if (idx > count) { 59 error.SetErrorStringWithFormat( 60 "invalid file list index %u, index must be 0 through %u", idx, 61 count); 62 } else { 63 bool changed = false; 64 for (size_t i = 1; i < argc; i += 2, ++idx) { 65 const char *orginal_path = args.GetArgumentAtIndex(i); 66 const char *replace_path = args.GetArgumentAtIndex(i + 1); 67 if (VerifyPathExists(replace_path)) { 68 ConstString a(orginal_path); 69 ConstString b(replace_path); 70 if (!m_path_mappings.Replace(a, b, idx, m_notify_changes)) 71 m_path_mappings.Append(a, b, m_notify_changes); 72 changed = true; 73 } else { 74 error.SetErrorStringWithFormat( 75 "the replacement path doesn't exist: \"%s\"", replace_path); 76 break; 77 } 78 } 79 if (changed) 80 NotifyValueChanged(); 81 } 82 } else { 83 error.SetErrorString("replace operation takes an array index followed by " 84 "one or more path pairs"); 85 } 86 break; 87 88 case eVarSetOperationAssign: 89 if (argc < 2 || (argc & 1)) { 90 error.SetErrorString("assign operation takes one or more path pairs"); 91 break; 92 } 93 m_path_mappings.Clear(m_notify_changes); 94 // Fall through to append case 95 LLVM_FALLTHROUGH; 96 case eVarSetOperationAppend: 97 if (argc < 2 || (argc & 1)) { 98 error.SetErrorString("append operation takes one or more path pairs"); 99 break; 100 } else { 101 bool changed = false; 102 for (size_t i = 0; i < argc; i += 2) { 103 const char *orginal_path = args.GetArgumentAtIndex(i); 104 const char *replace_path = args.GetArgumentAtIndex(i + 1); 105 if (VerifyPathExists(replace_path)) { 106 ConstString a(orginal_path); 107 ConstString b(replace_path); 108 m_path_mappings.Append(a, b, m_notify_changes); 109 m_value_was_set = true; 110 changed = true; 111 } else { 112 error.SetErrorStringWithFormat( 113 "the replacement path doesn't exist: \"%s\"", replace_path); 114 break; 115 } 116 } 117 if (changed) 118 NotifyValueChanged(); 119 } 120 break; 121 122 case eVarSetOperationInsertBefore: 123 case eVarSetOperationInsertAfter: 124 // Must be at least one index + 1 pair of paths, and the pair count must be 125 // even 126 if (argc >= 3 && (((argc - 1) & 1) == 0)) { 127 uint32_t idx = 128 StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX); 129 const uint32_t count = m_path_mappings.GetSize(); 130 if (idx > count) { 131 error.SetErrorStringWithFormat( 132 "invalid file list index %u, index must be 0 through %u", idx, 133 count); 134 } else { 135 bool changed = false; 136 if (op == eVarSetOperationInsertAfter) 137 ++idx; 138 for (size_t i = 1; i < argc; i += 2, ++idx) { 139 const char *orginal_path = args.GetArgumentAtIndex(i); 140 const char *replace_path = args.GetArgumentAtIndex(i + 1); 141 if (VerifyPathExists(replace_path)) { 142 ConstString a(orginal_path); 143 ConstString b(replace_path); 144 m_path_mappings.Insert(a, b, idx, m_notify_changes); 145 changed = true; 146 } else { 147 error.SetErrorStringWithFormat( 148 "the replacement path doesn't exist: \"%s\"", replace_path); 149 break; 150 } 151 } 152 if (changed) 153 NotifyValueChanged(); 154 } 155 } else { 156 error.SetErrorString("insert operation takes an array index followed by " 157 "one or more path pairs"); 158 } 159 break; 160 161 case eVarSetOperationRemove: 162 if (argc > 0) { 163 std::vector<int> remove_indexes; 164 bool all_indexes_valid = true; 165 size_t i; 166 for (i = 0; all_indexes_valid && i < argc; ++i) { 167 const int idx = 168 StringConvert::ToSInt32(args.GetArgumentAtIndex(i), INT32_MAX); 169 if (idx == INT32_MAX) 170 all_indexes_valid = false; 171 else 172 remove_indexes.push_back(idx); 173 } 174 175 if (all_indexes_valid) { 176 size_t num_remove_indexes = remove_indexes.size(); 177 if (num_remove_indexes) { 178 // Sort and then erase in reverse so indexes are always valid 179 llvm::sort(remove_indexes.begin(), remove_indexes.end()); 180 for (size_t j = num_remove_indexes - 1; j < num_remove_indexes; ++j) { 181 m_path_mappings.Remove(j, m_notify_changes); 182 } 183 } 184 NotifyValueChanged(); 185 } else { 186 error.SetErrorStringWithFormat( 187 "invalid array index '%s', aborting remove operation", 188 args.GetArgumentAtIndex(i)); 189 } 190 } else { 191 error.SetErrorString("remove operation takes one or more array index"); 192 } 193 break; 194 195 case eVarSetOperationInvalid: 196 error = OptionValue::SetValueFromString(value, op); 197 break; 198 } 199 return error; 200} 201 202lldb::OptionValueSP OptionValuePathMappings::DeepCopy() const { 203 return OptionValueSP(new OptionValuePathMappings(*this)); 204} 205