1 // Protocol Buffers - Google's data interchange format
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3 // http://code.google.com/p/protobuf/
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31 // Author: kenton@google.com (Kenton Varda)
32 // emulates google3/file/base/file.cc
34 #include <google/protobuf/testing/file.h>
37 #include <sys/types.h>
39 #define WIN32_LEAN_AND_MEAN // yeah, right
40 #include <windows.h> // Find*File(). :(
53 #define mkdir(name, mode) mkdir(name)
54 // Windows doesn't have symbolic links.
57 #define F_OK 00 // not defined by MSVC for whatever reason
61 bool File::Exists(const string& name) {
62 return access(name.c_str(), F_OK) == 0;
65 bool File::ReadFileToString(const string& name, string* output) {
67 FILE* file = fopen(name.c_str(), "rb");
68 if (file == NULL) return false;
71 size_t n = fread(buffer, 1, sizeof(buffer), file);
73 output->append(buffer, n);
76 int error = ferror(file);
77 if (fclose(file) != 0) return false;
81 void File::ReadFileToStringOrDie(const string& name, string* output) {
82 GOOGLE_CHECK(ReadFileToString(name, output)) << "Could not read: " << name;
85 void File::WriteStringToFileOrDie(const string& contents, const string& name) {
86 FILE* file = fopen(name.c_str(), "wb");
87 GOOGLE_CHECK(file != NULL)
88 << "fopen(" << name << ", \"wb\"): " << strerror(errno);
89 GOOGLE_CHECK_EQ(fwrite(contents.data(), 1, contents.size(), file),
91 << "fwrite(" << name << "): " << strerror(errno);
92 GOOGLE_CHECK(fclose(file) == 0)
93 << "fclose(" << name << "): " << strerror(errno);
96 bool File::CreateDir(const string& name, int mode) {
97 return mkdir(name.c_str(), mode) == 0;
100 bool File::RecursivelyCreateDir(const string& path, int mode) {
101 if (CreateDir(path, mode)) return true;
103 if (Exists(path)) return false;
105 // Try creating the parent.
106 string::size_type slashpos = path.find_last_of('/');
107 if (slashpos == string::npos) {
112 return RecursivelyCreateDir(path.substr(0, slashpos), mode) &&
113 CreateDir(path, mode);
116 void File::DeleteRecursively(const string& name,
117 void* dummy1, void* dummy2) {
118 // We don't care too much about error checking here since this is only used
119 // in tests to delete temporary directories that are under /tmp anyway.
122 // This interface is so weird.
123 WIN32_FIND_DATA find_data;
124 HANDLE find_handle = FindFirstFile((name + "/*").c_str(), &find_data);
125 if (find_handle == INVALID_HANDLE_VALUE) {
126 // Just delete it, whatever it is.
127 DeleteFile(name.c_str());
128 RemoveDirectory(name.c_str());
133 string entry_name = find_data.cFileName;
134 if (entry_name != "." && entry_name != "..") {
135 string path = name + "/" + entry_name;
136 if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
137 DeleteRecursively(path, NULL, NULL);
138 RemoveDirectory(path.c_str());
140 DeleteFile(path.c_str());
143 } while(FindNextFile(find_handle, &find_data));
144 FindClose(find_handle);
146 RemoveDirectory(name.c_str());
148 // Use opendir()! Yay!
149 // lstat = Don't follow symbolic links.
151 if (lstat(name.c_str(), &stats) != 0) return;
153 if (S_ISDIR(stats.st_mode)) {
154 DIR* dir = opendir(name.c_str());
157 struct dirent* entry = readdir(dir);
158 if (entry == NULL) break;
159 string entry_name = entry->d_name;
160 if (entry_name != "." && entry_name != "..") {
161 DeleteRecursively(name + "/" + entry_name, NULL, NULL);
169 } else if (S_ISREG(stats.st_mode)) {
170 remove(name.c_str());
175 } // namespace protobuf
176 } // namespace google