1 //===-- OptionValueFormatEntity.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/Interpreter/OptionValueFormatEntity.h"
10
11 #include "lldb/Core/Module.h"
12 #include "lldb/Interpreter/CommandInterpreter.h"
13 #include "lldb/Utility/Stream.h"
14 #include "lldb/Utility/StringList.h"
15 using namespace lldb;
16 using namespace lldb_private;
17
OptionValueFormatEntity(const char * default_format)18 OptionValueFormatEntity::OptionValueFormatEntity(const char *default_format) {
19 if (default_format && default_format[0]) {
20 llvm::StringRef default_format_str(default_format);
21 Status error = FormatEntity::Parse(default_format_str, m_default_entry);
22 if (error.Success()) {
23 m_default_format = default_format;
24 m_current_format = default_format;
25 m_current_entry = m_default_entry;
26 }
27 }
28 }
29
Clear()30 void OptionValueFormatEntity::Clear() {
31 m_current_entry = m_default_entry;
32 m_current_format = m_default_format;
33 m_value_was_set = false;
34 }
35
EscapeBackticks(llvm::StringRef str,std::string & dst)36 static void EscapeBackticks(llvm::StringRef str, std::string &dst) {
37 dst.clear();
38 dst.reserve(str.size());
39
40 for (size_t i = 0, e = str.size(); i != e; ++i) {
41 char c = str[i];
42 if (c == '`') {
43 if (i == 0 || str[i - 1] != '\\')
44 dst += '\\';
45 }
46 dst += c;
47 }
48 }
49
DumpValue(const ExecutionContext * exe_ctx,Stream & strm,uint32_t dump_mask)50 void OptionValueFormatEntity::DumpValue(const ExecutionContext *exe_ctx,
51 Stream &strm, uint32_t dump_mask) {
52 if (dump_mask & eDumpOptionType)
53 strm.Printf("(%s)", GetTypeAsCString());
54 if (dump_mask & eDumpOptionValue) {
55 if (dump_mask & eDumpOptionType)
56 strm.PutCString(" = ");
57 std::string escaped;
58 EscapeBackticks(m_current_format, escaped);
59 strm << '"' << escaped << '"';
60 }
61 }
62
SetValueFromString(llvm::StringRef value_str,VarSetOperationType op)63 Status OptionValueFormatEntity::SetValueFromString(llvm::StringRef value_str,
64 VarSetOperationType op) {
65 Status error;
66 switch (op) {
67 case eVarSetOperationClear:
68 Clear();
69 NotifyValueChanged();
70 break;
71
72 case eVarSetOperationReplace:
73 case eVarSetOperationAssign: {
74 // Check if the string starts with a quote character after removing leading
75 // and trailing spaces. If it does start with a quote character, make sure
76 // it ends with the same quote character and remove the quotes before we
77 // parse the format string. If the string doesn't start with a quote, leave
78 // the string alone and parse as is.
79 llvm::StringRef trimmed_value_str = value_str.trim();
80 if (!trimmed_value_str.empty()) {
81 const char first_char = trimmed_value_str[0];
82 if (first_char == '"' || first_char == '\'') {
83 const size_t trimmed_len = trimmed_value_str.size();
84 if (trimmed_len == 1 || value_str[trimmed_len - 1] != first_char) {
85 error.SetErrorString("mismatched quotes");
86 return error;
87 }
88 value_str = trimmed_value_str.substr(1, trimmed_len - 2);
89 }
90 }
91 FormatEntity::Entry entry;
92 error = FormatEntity::Parse(value_str, entry);
93 if (error.Success()) {
94 m_current_entry = std::move(entry);
95 m_current_format = std::string(value_str);
96 m_value_was_set = true;
97 NotifyValueChanged();
98 }
99 } break;
100
101 case eVarSetOperationInsertBefore:
102 case eVarSetOperationInsertAfter:
103 case eVarSetOperationRemove:
104 case eVarSetOperationAppend:
105 case eVarSetOperationInvalid:
106 error = OptionValue::SetValueFromString(value_str, op);
107 break;
108 }
109 return error;
110 }
111
AutoComplete(CommandInterpreter & interpreter,CompletionRequest & request)112 void OptionValueFormatEntity::AutoComplete(CommandInterpreter &interpreter,
113 CompletionRequest &request) {
114 FormatEntity::AutoComplete(request);
115 }
116