LLDB  mainline
OptionValuePathMappings.cpp
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1 //===-- OptionValuePathMappings.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 
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; idx++, i += 2) {
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  std::string previousError =
75  error.Fail() ? std::string(error.AsCString()) + "\n" : "";
77  "%sthe replacement path doesn't exist: \"%s\"",
78  previousError.c_str(), replace_path);
79  }
80  }
81  if (changed)
82  NotifyValueChanged();
83  }
84  } else {
85  error.SetErrorString("replace operation takes an array index followed by "
86  "one or more path pairs");
87  }
88  break;
89 
91  if (argc < 2 || (argc & 1)) {
92  error.SetErrorString("assign operation takes one or more path pairs");
93  break;
94  }
95  m_path_mappings.Clear(m_notify_changes);
96  // Fall through to append case
97  LLVM_FALLTHROUGH;
99  if (argc < 2 || (argc & 1)) {
100  error.SetErrorString("append operation takes one or more path pairs");
101  break;
102  } else {
103  bool changed = false;
104  for (size_t i = 0; i < argc; i += 2) {
105  const char *orginal_path = args.GetArgumentAtIndex(i);
106  const char *replace_path = args.GetArgumentAtIndex(i + 1);
107  if (VerifyPathExists(replace_path)) {
108  ConstString a(orginal_path);
109  ConstString b(replace_path);
110  m_path_mappings.Append(a, b, m_notify_changes);
111  m_value_was_set = true;
112  changed = true;
113  } else {
114  std::string previousError =
115  error.Fail() ? std::string(error.AsCString()) + "\n" : "";
117  "%sthe replacement path doesn't exist: \"%s\"",
118  previousError.c_str(), replace_path);
119  }
120  }
121  if (changed)
122  NotifyValueChanged();
123  }
124  break;
125 
128  // Must be at least one index + 1 pair of paths, and the pair count must be
129  // even
130  if (argc >= 3 && (((argc - 1) & 1) == 0)) {
131  uint32_t idx =
132  StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX);
133  const uint32_t count = m_path_mappings.GetSize();
134  if (idx > count) {
136  "invalid file list index %u, index must be 0 through %u", idx,
137  count);
138  } else {
139  bool changed = false;
140  if (op == eVarSetOperationInsertAfter)
141  ++idx;
142  for (size_t i = 1; i < argc; i += 2) {
143  const char *orginal_path = args.GetArgumentAtIndex(i);
144  const char *replace_path = args.GetArgumentAtIndex(i + 1);
145  if (VerifyPathExists(replace_path)) {
146  ConstString a(orginal_path);
147  ConstString b(replace_path);
148  m_path_mappings.Insert(a, b, idx, m_notify_changes);
149  changed = true;
150  idx++;
151  } else {
152  std::string previousError =
153  error.Fail() ? std::string(error.AsCString()) + "\n" : "";
155  "%sthe replacement path doesn't exist: \"%s\"",
156  previousError.c_str(), replace_path);
157  }
158  }
159  if (changed)
160  NotifyValueChanged();
161  }
162  } else {
163  error.SetErrorString("insert operation takes an array index followed by "
164  "one or more path pairs");
165  }
166  break;
167 
169  if (argc > 0) {
170  std::vector<int> remove_indexes;
171  for (size_t i = 0; i < argc; ++i) {
172  int idx =
173  StringConvert::ToSInt32(args.GetArgumentAtIndex(i), INT32_MAX);
174  if (idx < 0 || idx >= (int)m_path_mappings.GetSize()) {
176  "invalid array index '%s', aborting remove operation",
177  args.GetArgumentAtIndex(i));
178  break;
179  } else
180  remove_indexes.push_back(idx);
181  }
182 
183  // Sort and then erase in reverse so indexes are always valid
184  llvm::sort(remove_indexes.begin(), remove_indexes.end());
185  for (auto index : llvm::reverse(remove_indexes))
186  m_path_mappings.Remove(index, m_notify_changes);
187  NotifyValueChanged();
188  } else {
189  error.SetErrorString("remove operation takes one or more array index");
190  }
191  break;
192 
194  error = OptionValue::SetValueFromString(value, op);
195  break;
196  }
197  return error;
198 }
199 
200 lldb::OptionValueSP OptionValuePathMappings::DeepCopy() const {
201  return OptionValueSP(new OptionValuePathMappings(*this));
202 }
A command line argument class.
Definition: Args.h:33
A class that represents a running process on the host machine.
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:242
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:40
bool Fail() const
Test for error condition.
Definition: Status.cpp:182
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:256
const char * AsCString(const char *default_error_str="unknown error") const
Get the error string associated with the current error.
Definition: Status.cpp:131
#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