LLDB  mainline
OptionValuePathMappings.cpp
Go to the documentation of this file.
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 
10 
11 #include "lldb/Host/FileSystem.h"
13 #include "lldb/Utility/Args.h"
14 #include "lldb/Utility/FileSpec.h"
15 #include "lldb/Utility/Stream.h"
16 
17 using namespace lldb;
18 using namespace lldb_private;
19 namespace {
20 static bool VerifyPathExists(const char *path) {
21  if (path && path[0])
22  return FileSystem::Instance().Exists(path);
23  else
24  return false;
25 }
26 }
27 
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 
39 Status OptionValuePathMappings::SetValueFromString(llvm::StringRef value,
41  Status error;
42  Args args(value.str());
43  const size_t argc = args.GetArgumentCount();
44 
45  switch (op) {
47  Clear();
48  NotifyValueChanged();
49  break;
50 
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) {
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 {
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 
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;
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 {
113  "the replacement path doesn't exist: \"%s\"", replace_path);
114  break;
115  }
116  }
117  if (changed)
118  NotifyValueChanged();
119  }
120  break;
121 
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) {
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 {
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 
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 {
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 
196  error = OptionValue::SetValueFromString(value, op);
197  break;
198  }
199  return error;
200 }
201 
202 lldb::OptionValueSP OptionValuePathMappings::DeepCopy() const {
203  return OptionValueSP(new OptionValuePathMappings(*this));
204 }
A command line argument class.
Definition: Args.h:32
Enumerations for broadcasting.
Definition: SBLaunchInfo.h:14
A stream class that can stream formatted output to a file.
Definition: Stream.h:28
size_t GetArgumentCount() const
Gets the number of arguments left in this command object.
Definition: Args.cpp:254
"lldb/Target/ExecutionContext.h" A class that contains an execution context.
int32_t ToSInt32(const char *s, int32_t fail_value=0, int base=0, bool *success_ptr=nullptr)
#define UINT32_MAX
Definition: lldb-defines.h:31
VarSetOperationType
Settable state variable types.
void SetErrorString(llvm::StringRef err_str)
Set the current error string to err_str.
Definition: Status.cpp:241
size_t Printf(const char *format,...) __attribute__((format(printf
Output printf formatted output to the stream.
Definition: Stream.cpp:106
A uniqued constant string class.
Definition: ConstString.h:38
Definition: SBAddress.h:15
uint32_t ToUInt32(const char *s, uint32_t fail_value=0, int base=0, bool *success_ptr=nullptr)
int SetErrorStringWithFormat(const char *format,...) __attribute__((format(printf
Set the current error string to a formatted error string.
Definition: Status.cpp:255
#define INT32_MAX
Definition: lldb-defines.h:27
static bool DumpValue(Stream &s, const SymbolContext *sc, const ExecutionContext *exe_ctx, const FormatEntity::Entry &entry, ValueObject *valobj)
An error handling class.
Definition: Status.h:44