199 lines
6 KiB
C++
199 lines
6 KiB
C++
/*************************************************************************/
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/* path_utils.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "path_utils.h"
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#include "core/config/project_settings.h"
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#include "core/io/dir_access.h"
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#include "core/io/file_access.h"
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#include "core/os/os.h"
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#ifdef WINDOWS_ENABLED
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#define ENV_PATH_SEP ";"
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#else
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#include <limits.h>
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#include <unistd.h>
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#define ENV_PATH_SEP ":"
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#endif
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#include <stdlib.h>
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namespace path {
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String cwd() {
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#ifdef WINDOWS_ENABLED
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const DWORD expected_size = ::GetCurrentDirectoryW(0, nullptr);
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Char16String buffer;
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buffer.resize((int)expected_size);
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if (::GetCurrentDirectoryW(expected_size, (wchar_t *)buffer.ptrw()) == 0)
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return ".";
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String result;
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if (result.parse_utf16(buffer.ptr())) {
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return ".";
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}
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return result.simplify_path();
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#else
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char buffer[PATH_MAX];
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if (::getcwd(buffer, sizeof(buffer)) == nullptr) {
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return ".";
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}
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String result;
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if (result.parse_utf8(buffer)) {
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return ".";
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}
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return result.simplify_path();
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#endif
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}
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String abspath(const String &p_path) {
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if (p_path.is_absolute_path()) {
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return p_path.simplify_path();
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} else {
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return path::join(path::cwd(), p_path).simplify_path();
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}
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}
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String realpath(const String &p_path) {
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#ifdef WINDOWS_ENABLED
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// Open file without read/write access
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HANDLE hFile = ::CreateFileW((LPCWSTR)(p_path.utf16().get_data()), 0,
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FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
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if (hFile == INVALID_HANDLE_VALUE)
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return p_path;
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const DWORD expected_size = ::GetFinalPathNameByHandleW(hFile, nullptr, 0, FILE_NAME_NORMALIZED);
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if (expected_size == 0) {
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::CloseHandle(hFile);
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return p_path;
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}
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Char16String buffer;
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buffer.resize((int)expected_size);
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::GetFinalPathNameByHandleW(hFile, (wchar_t *)buffer.ptrw(), expected_size, FILE_NAME_NORMALIZED);
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::CloseHandle(hFile);
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String result;
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if (result.parse_utf16(buffer.ptr())) {
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return p_path;
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}
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return result.simplify_path();
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#elif UNIX_ENABLED
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char *resolved_path = ::realpath(p_path.utf8().get_data(), nullptr);
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if (!resolved_path) {
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return p_path;
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}
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String result;
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bool parse_ok = result.parse_utf8(resolved_path);
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::free(resolved_path);
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if (parse_ok) {
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return p_path;
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}
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return result.simplify_path();
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#endif
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}
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String join(const String &p_a, const String &p_b) {
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if (p_a.is_empty()) {
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return p_b;
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}
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const char32_t a_last = p_a[p_a.length() - 1];
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if ((a_last == '/' || a_last == '\\') ||
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(p_b.size() > 0 && (p_b[0] == '/' || p_b[0] == '\\'))) {
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return p_a + p_b;
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}
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return p_a + "/" + p_b;
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}
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String join(const String &p_a, const String &p_b, const String &p_c) {
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return path::join(path::join(p_a, p_b), p_c);
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}
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String join(const String &p_a, const String &p_b, const String &p_c, const String &p_d) {
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return path::join(path::join(path::join(p_a, p_b), p_c), p_d);
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}
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String relative_to_impl(const String &p_path, const String &p_relative_to) {
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// This function assumes arguments are normalized and absolute paths
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if (p_path.begins_with(p_relative_to)) {
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return p_path.substr(p_relative_to.length() + 1);
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} else {
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String base_dir = p_relative_to.get_base_dir();
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if (base_dir.length() <= 2 && (base_dir.is_empty() || base_dir.ends_with(":"))) {
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return p_path;
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}
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return String("..").plus_file(relative_to_impl(p_path, base_dir));
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}
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}
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#ifdef WINDOWS_ENABLED
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String get_drive_letter(const String &p_norm_path) {
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int idx = p_norm_path.find(":/");
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if (idx != -1 && idx < p_norm_path.find("/"))
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return p_norm_path.substr(0, idx + 1);
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return String();
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}
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#endif
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String relative_to(const String &p_path, const String &p_relative_to) {
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String relative_to_abs_norm = abspath(p_relative_to);
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String path_abs_norm = abspath(p_path);
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#ifdef WINDOWS_ENABLED
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if (get_drive_letter(relative_to_abs_norm) != get_drive_letter(path_abs_norm)) {
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return path_abs_norm;
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}
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#endif
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return relative_to_impl(path_abs_norm, relative_to_abs_norm);
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}
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} // namespace path
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