blob: a375904fc9424996d757b1c39750a3b036647d7f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmGccDepfileLexerHelper.h"
#include <algorithm>
#include <cstdio>
#include <string>
#include <vector>
#include "cmGccDepfileReaderTypes.h"
#include "LexerParser/cmGccDepfileLexer.h"
#ifdef _WIN32
# include <cctype>
# include "cmsys/Encoding.h"
#endif
bool cmGccDepfileLexerHelper::readFile(const char* filePath)
{
#ifdef _WIN32
wchar_t* wpath = cmsysEncoding_DupToWide(filePath);
FILE* file = _wfopen(wpath, L"rb");
free(wpath);
#else
FILE* file = fopen(filePath, "r");
#endif
if (!file) {
return false;
}
this->newEntry();
yyscan_t scanner;
cmGccDepfile_yylex_init(&scanner);
cmGccDepfile_yyset_extra(this, scanner);
cmGccDepfile_yyrestart(file, scanner);
cmGccDepfile_yylex(scanner);
cmGccDepfile_yylex_destroy(scanner);
this->sanitizeContent();
fclose(file);
return this->HelperState != State::Failed;
}
void cmGccDepfileLexerHelper::newEntry()
{
if (this->HelperState == State::Rule && !this->Content.empty()) {
if (!this->Content.back().rules.empty() &&
!this->Content.back().rules.back().empty()) {
this->HelperState = State::Failed;
}
return;
}
this->HelperState = State::Rule;
this->Content.emplace_back();
this->newRule();
}
void cmGccDepfileLexerHelper::newRule()
{
auto& entry = this->Content.back();
if (entry.rules.empty() || !entry.rules.back().empty()) {
entry.rules.emplace_back();
}
}
void cmGccDepfileLexerHelper::newDependency()
{
if (this->HelperState == State::Failed) {
return;
}
this->HelperState = State::Dependency;
auto& entry = this->Content.back();
if (entry.paths.empty() || !entry.paths.back().empty()) {
entry.paths.emplace_back();
}
}
void cmGccDepfileLexerHelper::newRuleOrDependency()
{
if (this->HelperState == State::Rule) {
this->newRule();
} else if (this->HelperState == State::Dependency) {
this->newDependency();
}
}
void cmGccDepfileLexerHelper::addToCurrentPath(const char* s)
{
if (this->Content.empty()) {
return;
}
cmGccStyleDependency* dep = &this->Content.back();
std::string* dst = nullptr;
switch (this->HelperState) {
case State::Rule: {
if (dep->rules.empty()) {
return;
}
dst = &dep->rules.back();
} break;
case State::Dependency: {
if (dep->paths.empty()) {
return;
}
dst = &dep->paths.back();
} break;
case State::Failed:
return;
}
dst->append(s);
}
void cmGccDepfileLexerHelper::sanitizeContent()
{
for (auto it = this->Content.begin(); it != this->Content.end();) {
// remove duplicate path entries
std::sort(it->paths.begin(), it->paths.end());
auto last = std::unique(it->paths.begin(), it->paths.end());
it->paths.erase(last, it->paths.end());
// Remove empty paths and normalize windows paths
for (auto pit = it->paths.begin(); pit != it->paths.end();) {
if (pit->empty()) {
pit = it->paths.erase(pit);
} else {
#if defined(_WIN32)
// Unescape the colon following the drive letter.
// Some versions of GNU compilers can escape this character.
// c\:\path must be transformed to c:\path
if (pit->size() >= 3 && std::toupper((*pit)[0]) >= 'A' &&
std::toupper((*pit)[0]) <= 'Z' && (*pit)[1] == '\\' &&
(*pit)[2] == ':') {
pit->erase(1, 1);
}
#endif
++pit;
}
}
// Remove empty rules
for (auto rit = it->rules.begin(); rit != it->rules.end();) {
if (rit->empty()) {
rit = it->rules.erase(rit);
} else {
++rit;
}
}
// Remove the entry if rules are empty or do not have any paths
if (it->rules.empty() || it->paths.empty()) {
it = this->Content.erase(it);
} else {
++it;
}
}
}
|
