1 // Copyright 2015 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "testing/utils/path_service.h"
6
7 #ifdef _WIN32
8 #include <Windows.h>
9 #elif defined(__APPLE__)
10 #include <mach-o/dyld.h>
11 #include <sys/stat.h>
12 #else // Linux
13 #include <linux/limits.h>
14 #include <sys/stat.h>
15 #include <unistd.h>
16 #endif // _WIN32
17
18 #include <string>
19
20 #include "core/fxcrt/fx_system.h"
21
22 namespace {
23
24 #if defined(__APPLE__) || (defined(ANDROID) && __ANDROID_API__ < 21)
25 using stat_wrapper_t = struct stat;
26
CallStat(const char * path,stat_wrapper_t * sb)27 int CallStat(const char* path, stat_wrapper_t* sb) {
28 return stat(path, sb);
29 }
30 #elif !_WIN32
31 using stat_wrapper_t = struct stat64;
32
33 int CallStat(const char* path, stat_wrapper_t* sb) {
34 return stat64(path, sb);
35 }
36 #endif
37
38 } // namespace
39
40 // static
DirectoryExists(const std::string & path)41 bool PathService::DirectoryExists(const std::string& path) {
42 #ifdef _WIN32
43 DWORD fileattr = GetFileAttributesA(path.c_str());
44 if (fileattr != INVALID_FILE_ATTRIBUTES)
45 return (fileattr & FILE_ATTRIBUTE_DIRECTORY) != 0;
46 return false;
47 #else
48 stat_wrapper_t file_info;
49 if (CallStat(path.c_str(), &file_info) != 0)
50 return false;
51 return S_ISDIR(file_info.st_mode);
52 #endif
53 }
54
55 // static
EndsWithSeparator(const std::string & path)56 bool PathService::EndsWithSeparator(const std::string& path) {
57 return path.size() > 1 && path[path.size() - 1] == PATH_SEPARATOR;
58 }
59
60 // static
GetExecutableDir(std::string * path)61 bool PathService::GetExecutableDir(std::string* path) {
62 // Get the current executable file path.
63 #ifdef _WIN32
64 char path_buffer[MAX_PATH];
65 path_buffer[0] = 0;
66
67 if (GetModuleFileNameA(NULL, path_buffer, MAX_PATH) == 0)
68 return false;
69 *path = std::string(path_buffer);
70 #elif defined(__APPLE__)
71 ASSERT(path);
72 unsigned int path_length = 0;
73 _NSGetExecutablePath(NULL, &path_length);
74 if (path_length == 0)
75 return false;
76
77 path->reserve(path_length);
78 path->resize(path_length - 1);
79 if (_NSGetExecutablePath(&((*path)[0]), &path_length))
80 return false;
81 #else // Linux
82 static const char kProcSelfExe[] = "/proc/self/exe";
83 char buf[PATH_MAX];
84 ssize_t count = ::readlink(kProcSelfExe, buf, PATH_MAX);
85 if (count <= 0)
86 return false;
87
88 *path = std::string(buf, count);
89 #endif // _WIN32
90
91 // Get the directory path.
92 std::size_t pos = path->size() - 1;
93 if (EndsWithSeparator(*path))
94 pos--;
95 std::size_t found = path->find_last_of(PATH_SEPARATOR, pos);
96 if (found == std::string::npos)
97 return false;
98 path->resize(found);
99 return true;
100 }
101
102 // static
GetSourceDir(std::string * path)103 bool PathService::GetSourceDir(std::string* path) {
104 if (!GetExecutableDir(path))
105 return false;
106
107 if (!EndsWithSeparator(*path))
108 path->push_back(PATH_SEPARATOR);
109 path->append("..");
110 path->push_back(PATH_SEPARATOR);
111 #if defined(ANDROID)
112 path->append("chromium_tests_root");
113 #else // Non-Android
114 path->append("..");
115 #endif // defined(ANDROID)
116 return true;
117 }
118
119 // static
GetTestDataDir(std::string * path)120 bool PathService::GetTestDataDir(std::string* path) {
121 if (!GetSourceDir(path))
122 return false;
123
124 if (!EndsWithSeparator(*path))
125 path->push_back(PATH_SEPARATOR);
126
127 std::string potential_path = *path;
128 potential_path.append("testing");
129 potential_path.push_back(PATH_SEPARATOR);
130 potential_path.append("resources");
131 if (PathService::DirectoryExists(potential_path)) {
132 *path = potential_path;
133 return true;
134 }
135
136 potential_path = *path;
137 potential_path.append("third_party");
138 potential_path.push_back(PATH_SEPARATOR);
139 potential_path.append("pdfium");
140 potential_path.push_back(PATH_SEPARATOR);
141 potential_path.append("testing");
142 potential_path.push_back(PATH_SEPARATOR);
143 potential_path.append("resources");
144 if (PathService::DirectoryExists(potential_path)) {
145 *path = potential_path;
146 return true;
147 }
148
149 return false;
150 }
151
152 // static
GetTestFilePath(const std::string & file_name,std::string * path)153 bool PathService::GetTestFilePath(const std::string& file_name,
154 std::string* path) {
155 if (!GetTestDataDir(path))
156 return false;
157
158 if (!EndsWithSeparator(*path))
159 path->push_back(PATH_SEPARATOR);
160 path->append(file_name);
161 return true;
162 }
163
164 // static
GetThirdPartyFilePath(const std::string & file_name,std::string * path)165 bool PathService::GetThirdPartyFilePath(const std::string& file_name,
166 std::string* path) {
167 if (!GetSourceDir(path))
168 return false;
169
170 if (!EndsWithSeparator(*path))
171 path->push_back(PATH_SEPARATOR);
172
173 std::string potential_path = *path;
174 potential_path.append("third_party");
175 if (PathService::DirectoryExists(potential_path)) {
176 *path = potential_path;
177 path->append(PATH_SEPARATOR + file_name);
178 return true;
179 }
180
181 potential_path = *path;
182 potential_path.append("third_party");
183 potential_path.push_back(PATH_SEPARATOR);
184 potential_path.append("pdfium");
185 potential_path.push_back(PATH_SEPARATOR);
186 potential_path.append("third_party");
187 if (PathService::DirectoryExists(potential_path)) {
188 *path = potential_path;
189 path->append(PATH_SEPARATOR + file_name);
190 return true;
191 }
192
193 return false;
194 }
195