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/*************************************************************************/
/* path_utils.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "path_utils.h"
#include "core/os/dir_access.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/project_settings.h"
#ifdef WINDOWS_ENABLED
#include <windows.h>
#define ENV_PATH_SEP ";"
#else
#include <limits.h>
#include <unistd.h>
#define ENV_PATH_SEP ":"
#endif
#include <stdlib.h>
namespace path {
String find_executable(const String &p_name) {
#ifdef WINDOWS_ENABLED
Vector<String> exts = OS::get_singleton()->get_environment("PATHEXT").split(ENV_PATH_SEP, false);
#endif
Vector<String> env_path = OS::get_singleton()->get_environment("PATH").split(ENV_PATH_SEP, false);
if (env_path.empty())
return String();
for (int i = 0; i < env_path.size(); i++) {
String p = path::join(env_path[i], p_name);
#ifdef WINDOWS_ENABLED
for (int j = 0; j < exts.size(); j++) {
String p2 = p + exts[j].to_lower(); // lowercase to reduce risk of case mismatch warning
if (FileAccess::exists(p2))
return p2;
}
#else
if (FileAccess::exists(p))
return p;
#endif
}
return String();
}
String cwd() {
#ifdef WINDOWS_ENABLED
const DWORD expected_size = ::GetCurrentDirectoryW(0, NULL);
String buffer;
buffer.resize((int)expected_size);
if (::GetCurrentDirectoryW(expected_size, buffer.ptrw()) == 0)
return ".";
return buffer.simplify_path();
#else
char buffer[PATH_MAX];
if (::getcwd(buffer, sizeof(buffer)) == NULL)
return ".";
String result;
if (result.parse_utf8(buffer))
return ".";
return result.simplify_path();
#endif
}
String abspath(const String &p_path) {
if (p_path.is_abs_path()) {
return p_path.simplify_path();
} else {
return path::join(path::cwd(), p_path).simplify_path();
}
}
String realpath(const String &p_path) {
#ifdef WINDOWS_ENABLED
// Open file without read/write access
HANDLE hFile = ::CreateFileW(p_path.c_str(), 0,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE)
return p_path;
const DWORD expected_size = ::GetFinalPathNameByHandleW(hFile, NULL, 0, FILE_NAME_NORMALIZED);
if (expected_size == 0) {
::CloseHandle(hFile);
return p_path;
}
String buffer;
buffer.resize((int)expected_size);
::GetFinalPathNameByHandleW(hFile, buffer.ptrw(), expected_size, FILE_NAME_NORMALIZED);
::CloseHandle(hFile);
return buffer.simplify_path();
#elif UNIX_ENABLED
char *resolved_path = ::realpath(p_path.utf8().get_data(), NULL);
if (!resolved_path)
return p_path;
String result;
bool parse_ok = result.parse_utf8(resolved_path);
::free(resolved_path);
if (parse_ok)
return p_path;
return result.simplify_path();
#endif
}
String join(const String &p_a, const String &p_b) {
if (p_a.empty())
return p_b;
const CharType a_last = p_a[p_a.length() - 1];
if ((a_last == '/' || a_last == '\\') ||
(p_b.size() > 0 && (p_b[0] == '/' || p_b[0] == '\\'))) {
return p_a + p_b;
}
return p_a + "/" + p_b;
}
String join(const String &p_a, const String &p_b, const String &p_c) {
return path::join(path::join(p_a, p_b), p_c);
}
String join(const String &p_a, const String &p_b, const String &p_c, const String &p_d) {
return path::join(path::join(path::join(p_a, p_b), p_c), p_d);
}
String relative_to_impl(const String &p_path, const String &p_relative_to) {
// This function assumes arguments are normalized and absolute paths
if (p_path.begins_with(p_relative_to)) {
return p_path.substr(p_relative_to.length() + 1);
} else {
String base_dir = p_relative_to.get_base_dir();
if (base_dir.length() <= 2 && (base_dir.empty() || base_dir.ends_with(":")))
return p_path;
return String("..").plus_file(relative_to_impl(p_path, base_dir));
}
}
#ifdef WINDOWS_ENABLED
String get_drive_letter(const String &p_norm_path) {
int idx = p_norm_path.find(":/");
if (idx != -1 && idx < p_norm_path.find("/"))
return p_norm_path.substr(0, idx + 1);
return String();
}
#endif
String relative_to(const String &p_path, const String &p_relative_to) {
String relative_to_abs_norm = abspath(p_relative_to);
String path_abs_norm = abspath(p_path);
#ifdef WINDOWS_ENABLED
if (get_drive_letter(relative_to_abs_norm) != get_drive_letter(path_abs_norm)) {
return path_abs_norm;
}
#endif
return relative_to_impl(path_abs_norm, relative_to_abs_norm);
}
} // namespace path
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