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// Copyright 2015 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "testing/utils/path_service.h"
#include <stddef.h>
#ifdef _WIN32
#include <Windows.h>
#elif defined(__APPLE__)
#include <mach-o/dyld.h>
#include <sys/stat.h>
#elif defined(__Fuchsia__)
#include <sys/stat.h>
#include <unistd.h>
#else // Linux
#include <linux/limits.h>
#include <sys/stat.h>
#include <unistd.h>
#endif // _WIN32
#include <string>
#include "core/fxcrt/fx_system.h"
#include "third_party/base/check.h"
namespace {
#if defined(__APPLE__) || defined(__Fuchsia__) || \
(defined(ANDROID) && __ANDROID_API__ < 21)
using stat_wrapper_t = struct stat;
int CallStat(const char* path, stat_wrapper_t* sb) {
return stat(path, sb);
}
#elif !_WIN32
using stat_wrapper_t = struct stat64;
int CallStat(const char* path, stat_wrapper_t* sb) {
return stat64(path, sb);
}
#endif
} // namespace
// static
bool PathService::DirectoryExists(const std::string& path) {
#ifdef _WIN32
DWORD fileattr = GetFileAttributesA(path.c_str());
if (fileattr != INVALID_FILE_ATTRIBUTES)
return (fileattr & FILE_ATTRIBUTE_DIRECTORY) != 0;
return false;
#else
stat_wrapper_t file_info;
if (CallStat(path.c_str(), &file_info) != 0)
return false;
return S_ISDIR(file_info.st_mode);
#endif
}
// static
bool PathService::EndsWithSeparator(const std::string& path) {
return path.size() > 1 && path[path.size() - 1] == PATH_SEPARATOR;
}
// static
bool PathService::GetExecutableDir(std::string* path) {
// Get the current executable file path.
#ifdef _WIN32
char path_buffer[MAX_PATH];
path_buffer[0] = 0;
if (GetModuleFileNameA(NULL, path_buffer, MAX_PATH) == 0)
return false;
*path = std::string(path_buffer);
#elif defined(__APPLE__)
DCHECK(path);
unsigned int path_length = 0;
_NSGetExecutablePath(NULL, &path_length);
if (path_length == 0)
return false;
path->reserve(path_length);
path->resize(path_length - 1);
if (_NSGetExecutablePath(&((*path)[0]), &path_length))
return false;
#else // Linux
static const char kProcSelfExe[] = "/proc/self/exe";
char buf[PATH_MAX];
ssize_t count = ::readlink(kProcSelfExe, buf, PATH_MAX);
if (count <= 0)
return false;
*path = std::string(buf, count);
#endif // _WIN32
// Get the directory path.
size_t pos = path->size() - 1;
if (EndsWithSeparator(*path))
pos--;
size_t found = path->find_last_of(PATH_SEPARATOR, pos);
if (found == std::string::npos)
return false;
path->resize(found);
return true;
}
// static
bool PathService::GetSourceDir(std::string* path) {
if (!GetExecutableDir(path))
return false;
if (!EndsWithSeparator(*path))
path->push_back(PATH_SEPARATOR);
path->append("..");
path->push_back(PATH_SEPARATOR);
#if defined(ANDROID)
path->append("chromium_tests_root");
#else // Non-Android
path->append("..");
#endif // defined(ANDROID)
return true;
}
// static
bool PathService::GetTestDataDir(std::string* path) {
if (!GetSourceDir(path))
return false;
if (!EndsWithSeparator(*path))
path->push_back(PATH_SEPARATOR);
std::string potential_path = *path;
potential_path.append("testing");
potential_path.push_back(PATH_SEPARATOR);
potential_path.append("resources");
if (PathService::DirectoryExists(potential_path)) {
*path = potential_path;
return true;
}
potential_path = *path;
potential_path.append("third_party");
potential_path.push_back(PATH_SEPARATOR);
potential_path.append("pdfium");
potential_path.push_back(PATH_SEPARATOR);
potential_path.append("testing");
potential_path.push_back(PATH_SEPARATOR);
potential_path.append("resources");
if (PathService::DirectoryExists(potential_path)) {
*path = potential_path;
return true;
}
return false;
}
// static
bool PathService::GetTestFilePath(const std::string& file_name,
std::string* path) {
if (!GetTestDataDir(path))
return false;
if (!EndsWithSeparator(*path))
path->push_back(PATH_SEPARATOR);
path->append(file_name);
return true;
}
// static
bool PathService::GetThirdPartyFilePath(const std::string& file_name,
std::string* path) {
if (!GetSourceDir(path))
return false;
if (!EndsWithSeparator(*path))
path->push_back(PATH_SEPARATOR);
std::string potential_path = *path;
potential_path.append("third_party");
// Use third_party/bigint as a way to distinguish PDFium's vs. other's.
std::string bigint = potential_path + PATH_SEPARATOR + "bigint";
if (PathService::DirectoryExists(bigint)) {
*path = potential_path;
path->append(PATH_SEPARATOR + file_name);
return true;
}
potential_path = *path;
potential_path.append("third_party");
potential_path.push_back(PATH_SEPARATOR);
potential_path.append("pdfium");
potential_path.push_back(PATH_SEPARATOR);
potential_path.append("third_party");
bigint = potential_path + PATH_SEPARATOR + "bigint";
if (PathService::DirectoryExists(potential_path)) {
*path = potential_path;
path->append(PATH_SEPARATOR + file_name);
return true;
}
return false;
}
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