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filesystem.cpp
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/*
MIT License
Copyright © 2020-2022 Samuel Venable
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 <set>
#include <sstream>
#include <fstream>
#include <algorithm>
#include <vector>
#include <random>
#include <thread>
#include <climits>
#include <cstdlib>
#include <cstring>
#if defined(_WIN32)
#include <cwchar>
#endif
#include "filesystem.h"
#include "filesystem.hpp"
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#if defined(_WIN32)
#include <windows.h>
#include <Shlobj.h>
#include <share.h>
#include <io.h>
#else
#if defined(__APPLE__) && defined(__MACH__)
#include <sysdir.h>
#include <libproc.h>
#elif defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/sysctl.h>
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__)
#if defined(__OpenBSD__)
#include <kvm.h>
#endif
#include <sys/user.h>
#endif
#endif
#include <unistd.h>
#endif
#if defined(_WIN32)
using std::wstring;
#endif
using std::string;
using std::vector;
using std::size_t;
namespace ngs::fs {
namespace {
void message_pump() {
#if defined(_WIN32)
MSG msg; while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
#endif
}
#if defined(_WIN32)
wstring widen(string str) {
size_t wchar_count = str.size() + 1;
vector<wchar_t> buf(wchar_count);
return wstring{ buf.data(), (size_t)MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, buf.data(), (int)wchar_count) };
}
string narrow(wstring wstr) {
int nbytes = WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), (int)wstr.length(), nullptr, 0, nullptr, nullptr);
vector<char> buf(nbytes);
return string{ buf.data(), (size_t)WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), (int)wstr.length(), buf.data(), nbytes, nullptr, nullptr) };
}
#endif
bool is_digit(char byte) {
return (byte == '0' || byte == '1' || byte == '2' || byte == '3' || byte == '4' ||
byte == '5' || byte == '6' || byte == '7' || byte == '8' || byte == '9');
}
vector<string> directory_contents;
unsigned directory_contents_index = 0;
unsigned directory_contents_order = DC_ATOZ;
unsigned directory_contents_cntfiles = 1;
unsigned directory_contents_maxfiles = 0;
bool directory_contents_completion_async = false;
bool directory_contents_completion_status = false;
time_t file_datetime_helper(string fname, int timestamp) {
int result = -1;
#if defined(_WIN32)
wstring wfname = widen(fname);
struct _stat info;
result = _wstat(wfname.c_str(), &info);
#else
struct stat info;
result = stat(fname.c_str(), &info);
#endif
if (result == -1) return 0;
time_t time = 0;
if (timestamp == 0) time = info.st_atime;
if (timestamp == 1) time = info.st_mtime;
if (timestamp == 2) time = info.st_ctime;
return time;
}
int file_datetime(string fname, int timestamp, int measurement) {
int result = -1;
time_t time = file_datetime_helper(fname, timestamp);
#if defined(_WIN32)
struct tm timeinfo;
if (localtime_s(&timeinfo, &time)) return -1;
switch (measurement) {
case 0: return timeinfo.tm_year + 1900;
case 1: return timeinfo.tm_mon + 1;
case 2: return timeinfo.tm_mday;
case 3: return timeinfo.tm_hour;
case 4: return timeinfo.tm_min;
case 5: return timeinfo.tm_sec;
default: return result;
}
#else
struct tm *timeinfo = std::localtime(&time);
switch (measurement) {
case 0: return timeinfo->tm_year + 1900;
case 1: return timeinfo->tm_mon + 1;
case 2: return timeinfo->tm_mday;
case 3: return timeinfo->tm_hour;
case 4: return timeinfo->tm_min;
case 5: return timeinfo->tm_sec;
default: return result;
}
#endif
return result;
}
int file_bin_datetime(int fd, int timestamp, int measurement) {
int result = -1;
#if defined(_WIN32)
struct _stat info;
result = _fstat(fd, &info);
#else
struct stat info;
result = fstat(fd, &info);
#endif
time_t time = 0;
if (timestamp == 0) time = info.st_atime;
if (timestamp == 1) time = info.st_mtime;
if (timestamp == 2) time = info.st_ctime;
if (result == -1) return result;
#if defined(_WIN32)
struct tm timeinfo;
if (localtime_s(&timeinfo, &time)) return -1;
switch (measurement) {
case 0: return timeinfo.tm_year + 1900;
case 1: return timeinfo.tm_mon + 1;
case 2: return timeinfo.tm_mday;
case 3: return timeinfo.tm_hour;
case 4: return timeinfo.tm_min;
case 5: return timeinfo.tm_sec;
default: return result;
}
#else
struct tm *timeinfo = std::localtime(&time);
switch (measurement) {
case 0: return timeinfo->tm_year + 1900;
case 1: return timeinfo->tm_mon + 1;
case 2: return timeinfo->tm_mday;
case 3: return timeinfo->tm_hour;
case 4: return timeinfo->tm_min;
case 5: return timeinfo->tm_sec;
default: return result;
}
#endif
return result;
}
string string_replace_all(string str, string substr, string nstr) {
size_t pos = 0;
while ((pos = str.find(substr, pos)) != string::npos) {
message_pump();
str.replace(pos, substr.length(), nstr);
pos += nstr.length();
}
return str;
}
vector<string> string_split(string str, char delimiter) {
vector<string> vec;
std::stringstream sstr(str);
string tmp;
while (std::getline(sstr, tmp, delimiter)) {
message_pump();
vec.push_back(tmp);
}
return vec;
}
string filename_path(string fname) {
#if defined(_WIN32)
size_t fp = fname.find_last_of("\\/");
#else
size_t fp = fname.find_last_of("/");
#endif
if (fp == string::npos) return fname;
return fname.substr(0, fp + 1);
}
string filename_name(string fname) {
#if defined(_WIN32)
size_t fp = fname.find_last_of("\\/");
#else
size_t fp = fname.find_last_of("/");
#endif
if (fp == string::npos) return fname;
return fname.substr(fp + 1);
}
string filename_ext(string fname) {
fname = filename_name(fname);
size_t fp = fname.find_last_of(".");
if (fp == string::npos) return "";
return fname.substr(fp);
}
string expand_without_trailing_slash(string dname) {
std::error_code ec;
dname = environment_expand_variables(dname);
ghc::filesystem::path p = ghc::filesystem::path(dname);
p = ghc::filesystem::absolute(p, ec);
if (ec.value() != 0) return "";
dname = p.string();
#if defined(_WIN32)
while ((dname.back() == '\\' || dname.back() == '/') &&
(p.root_name().string() + "\\" != dname && p.root_name().string() + "/" != dname)) {
message_pump(); p = ghc::filesystem::path(dname); dname.pop_back();
}
#else
while (dname.back() == '/' && (!dname.empty() && dname[0] != '/' && dname.length() != 1)) {
dname.pop_back();
}
#endif
return dname;
}
string expand_with_trailing_slash(string dname) {
dname = expand_without_trailing_slash(dname);
#if defined(_WIN32)
if (dname.back() != '\\') dname += "\\";
#else
if (dname.back() != '/') dname += "/";
#endif
return dname;
}
struct file_bin_hardlinks_struct {
vector<string> x;
vector<string> y;
bool recursive;
unsigned i;
unsigned j;
#if defined(_WIN32)
BY_HANDLE_FILE_INFORMATION info;
#else
struct stat info;
#endif
};
vector<string> file_bin_hardlinks_result;
void file_bin_hardlinks_helper(file_bin_hardlinks_struct *s) {
#if defined(_WIN32)
if (file_bin_hardlinks_result.size() >= s->info.nNumberOfLinks) return;
#else
if (file_bin_hardlinks_result.size() >= s->info.st_nlink) return;
#endif
if (s->i < s->x.size()) {
std::error_code ec; if (!directory_exists(s->x[s->i])) return;
s->x[s->i] = expand_without_trailing_slash(s->x[s->i]);
const ghc::filesystem::path path = ghc::filesystem::path(s->x[s->i]);
if (directory_exists(s->x[s->i]) || path.root_name().string() + "\\" == path.string()) {
ghc::filesystem::directory_iterator end_itr;
for (ghc::filesystem::directory_iterator dir_ite(path, ec); dir_ite != end_itr; dir_ite.increment(ec)) {
message_pump(); if (ec.value() != 0) { break; }
ghc::filesystem::path file_path = ghc::filesystem::path(filename_absolute(dir_ite->path().string()));
#if defined(_WIN32)
int fd = -1;
BY_HANDLE_FILE_INFORMATION info;
if (file_exists(file_path.string())) {
// printf("%s\n", file_path.string().c_str());
if (!_wsopen_s(&fd, file_path.wstring().c_str(), _O_RDONLY, _SH_DENYNO, _S_IREAD)) {
bool success = GetFileInformationByHandle((HANDLE)_get_osfhandle(fd), &info);
bool matches = (info.ftLastWriteTime.dwLowDateTime == s->info.ftLastWriteTime.dwLowDateTime &&
info.ftLastWriteTime.dwHighDateTime == s->info.ftLastWriteTime.dwHighDateTime &&
info.nFileSizeHigh == s->info.nFileSizeHigh && info.nFileSizeLow == s->info.nFileSizeLow &&
info.nFileIndexHigh == s->info.nFileIndexHigh && info.nFileIndexLow == s->info.nFileIndexLow &&
info.dwVolumeSerialNumber == s->info.dwVolumeSerialNumber);
if (matches && success) {
file_bin_hardlinks_result.push_back(file_path.string());
if (file_bin_hardlinks_result.size() >= info.nNumberOfLinks) {
s->info.nNumberOfLinks = info.nNumberOfLinks; s->x.clear();
_close(fd);
return;
}
}
_close(fd);
}
}
#else
struct stat info;
if (file_exists(file_path.string())) {
// printf("%s\n", file_path.string().c_str());
if (!stat(file_path.string().c_str(), &info)) {
if (info.st_dev == s->info.st_dev && info.st_ino == s->info.st_ino &&
info.st_size == s->info.st_size && info.st_mtime == s->info.st_mtime) {
file_bin_hardlinks_result.push_back(file_path.string());
if (file_bin_hardlinks_result.size() >= info.st_nlink) {
s->info.st_nlink = info.st_nlink; s->x.clear();
return;
}
}
}
}
#endif
if (s->recursive && directory_exists(file_path.string())) {
// printf("%s\n", file_path.string().c_str());
s->x.push_back(file_path.string());
s->i++; file_bin_hardlinks_helper(s);
}
}
}
}
while (s->j < s->y.size() && directory_exists(s->y[s->j])) {
message_pump(); s->x.clear(); s->x.push_back(s->y[s->j]);
s->j++; file_bin_hardlinks_helper(s);
}
}
string directory_get_special_path(int dtype) {
string result;
#if defined(_WIN32)
wchar_t *ptr = nullptr;
KNOWNFOLDERID fid;
switch (dtype) {
case 0: { fid = FOLDERID_Desktop; break; }
case 1: { fid = FOLDERID_Documents; break; }
case 2: { fid = FOLDERID_Downloads; break; }
case 3: { fid = FOLDERID_Music; break; }
case 4: { fid = FOLDERID_Pictures; break; }
case 5: { fid = FOLDERID_Videos; break; }
default: { fid = FOLDERID_Desktop; break; }
}
if (SUCCEEDED(SHGetKnownFolderPath(fid, KF_FLAG_CREATE | KF_FLAG_DONT_UNEXPAND, nullptr, &ptr))) {
result = narrow(ptr);
if (!result.empty() && result.back() != '\\') {
result.push_back('\\');
}
}
CoTaskMemFree(ptr);
#elif defined(__APPLE__) && defined(__MACH__)
char buf[PATH_MAX];
sysdir_search_path_directory_t fid;
sysdir_search_path_enumeration_state state;
switch (dtype) {
case 0: { fid = SYSDIR_DIRECTORY_DESKTOP; break; }
case 1: { fid = SYSDIR_DIRECTORY_DOCUMENT; break; }
case 2: { fid = SYSDIR_DIRECTORY_DOWNLOADS; break; }
case 3: { fid = SYSDIR_DIRECTORY_MUSIC; break; }
case 4: { fid = SYSDIR_DIRECTORY_PICTURES; break; }
case 5: { fid = SYSDIR_DIRECTORY_MOVIES; break; }
default: { fid = SYSDIR_DIRECTORY_DESKTOP; break; }
}
state = sysdir_start_search_path_enumeration(fid, SYSDIR_DOMAIN_MASK_USER);
while ((state = sysdir_get_next_search_path_enumeration(state, buf))) {
if (buf[0] == '~') {
result = buf;
result.replace(0, 1, environment_get_variable("HOME"));
if (!result.empty() && result.back() != '/') {
result.push_back('/');
}
break;
}
}
#else
string fid;
switch (dtype) {
case 0: { fid = "XDG_DESKTOP_DIR="; break; }
case 1: { fid = "XDG_DOCUMENTS_DIR="; break; }
case 2: { fid = "XDG_DOWNLOAD_DIR="; break; }
case 3: { fid = "XDG_MUSIC_DIR="; break; }
case 4: { fid = "XDG_PICTURES_DIR="; break; }
case 5: { fid = "XDG_VIDEOS_DIR="; break; }
default: { fid = "XDG_DESKTOP_DIR="; break; }
}
string conf = environment_get_variable("HOME") + "/.config/user-dirs.dirs";
if (file_exists(conf)) {
int dirs = file_text_open_read(conf);
if (dirs != -1) {
while (!file_text_eof(dirs)) {
string line = file_text_read_string(dirs);
file_text_readln(dirs);
size_t pos = line.find(fid, 0);
if (pos != string::npos) {
FILE *fp = popen(("echo " + line.substr(pos + fid.length())).c_str(), "r");
if (fp) {
char buf[PATH_MAX];
if (fgets(buf, sizeof(buf), fp)) {
string str = buf;
size_t pos = str.find("\n", strlen(buf) - 1);
if (pos != string::npos) {
str.replace(pos, 1, "");
}
if (!directory_exists(str)) {
directory_create(str);
}
result = str;
if (!result.empty() && result.back() != '/') {
result.push_back('/');
}
}
pclose(fp);
}
}
}
file_text_close(dirs);
}
}
#endif
return result;
}
} // anonymous namespace
string directory_get_current_working() {
std::error_code ec;
string result = expand_with_trailing_slash(ghc::filesystem::current_path(ec).string());
return (ec.value() == 0) ? result : "";
}
bool directory_set_current_working(string dname) {
std::error_code ec;
dname = expand_without_trailing_slash(dname);
const ghc::filesystem::path path = ghc::filesystem::path(dname);
ghc::filesystem::current_path(path, ec);
return (ec.value() == 0);
}
string directory_get_temporary_path() {
std::error_code ec;
string result = expand_with_trailing_slash(ghc::filesystem::temp_directory_path(ec).string());
return (ec.value() == 0) ? result : "";
}
string directory_get_desktop_path() {
return directory_get_special_path(0);
}
string directory_get_documents_path() {
return directory_get_special_path(1);
}
string directory_get_downloads_path() {
return directory_get_special_path(2);
}
string directory_get_music_path() {
return directory_get_special_path(3);
}
string directory_get_pictures_path() {
return directory_get_special_path(4);
}
string directory_get_videos_path() {
return directory_get_special_path(5);
}
string executable_get_pathname() {
string path;
#if defined(_WIN32)
wchar_t buffer[MAX_PATH];
if (GetModuleFileNameW(nullptr, buffer, sizeof(buffer)) != 0) {
wchar_t exe[MAX_PATH];
if (_wfullpath(exe, buffer, MAX_PATH)) {
path = narrow(exe);
}
}
#elif (defined(__APPLE__) && defined(__MACH__))
char exe[PROC_PIDPATHINFO_MAXSIZE];
if (proc_pidpath(getpid(), exe, sizeof(exe)) > 0) {
char buffer[PATH_MAX];
if (realpath(exe, buffer)) {
path = buffer;
}
}
#elif (defined(__linux__) && !defined(__ANDROID__))
char exe[PATH_MAX];
if (realpath("/proc/self/exe", exe)) {
path = exe;
}
#elif defined(__FreeBSD__) || defined(__DragonFly__)
int mib[4];
size_t len = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
if (sysctl(mib, 4, nullptr, &len, nullptr, 0) == 0) {
string strbuff;
strbuff.resize(len, '\0');
char *exe = strbuff.data();
if (sysctl(mib, 4, exe, &len, nullptr, 0) == 0) {
char buffer[PATH_MAX];
if (realpath(exe, buffer)) {
path = buffer;
}
}
}
#elif defined(__NetBSD__)
int mib[4];
size_t len = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC_ARGS;
mib[2] = -1;
mib[3] = KERN_PROC_PATHNAME;
if (sysctl(mib, 4, nullptr, &len, nullptr, 0) == 0) {
string strbuff;
strbuff.resize(len, '\0');
char *exe = strbuff.data();
if (sysctl(mib, 4, exe, &len, nullptr, 0) == 0) {
char buffer[PATH_MAX];
if (realpath(exe, buffer)) {
path = buffer;
}
}
}
#elif defined(__OpenBSD__)
auto is_executable = [](string in, string *out) {
*out = "";
bool success = false;
struct stat st;
static kvm_t *kd = nullptr;
if (!stat(in.c_str(), &st) && (st.st_mode & S_IXUSR) && (st.st_mode & S_IFREG)) {
char executable[PATH_MAX];
if (realpath(in.c_str(), executable)) {
int cntp = 0;
kinfo_file *kif = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return false;
if ((kif = kvm_getfiles(kd, KERN_FILE_BYPID, getpid(), sizeof(struct kinfo_file), &cntp))) {
for (int i = 0; i < cntp; i++) {
if (kif[i].fd_fd == KERN_FILE_TEXT) {
if (st.st_dev == (dev_t)kif[i].va_fsid || st.st_ino == (ino_t)kif[i].va_fileid) {
*out = executable;
success = true;
break;
}
}
}
}
kvm_close(kd);
}
}
return success;
};
int mib[4];
char **cmdbuf = nullptr;
size_t cmdsize = 0;
string arg;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC_ARGS;
mib[2] = getpid();
mib[3] = KERN_PROC_ARGV;
if (sysctl(mib, 4, nullptr, &cmdsize, nullptr, 0) == 0) {
if ((cmdbuf = (char **)malloc(cmdsize))) {
if (sysctl(mib, 4, cmdbuf, &cmdsize, nullptr, 0) == 0) {
arg = cmdbuf[0];
}
free(cmdbuf);
}
}
if (!arg.empty()) {
bool is_exe = false;
string argv0;
if (arg[0] == '/') {
argv0 = arg;
is_exe = is_executable(argv0.c_str(), &path);
} else if (arg.find('/') == string::npos) {
const char *cenv = getenv("PATH");
string penv = cenv ? cenv : "";
if (!penv.empty()) {
vector<string> env = string_split(penv, ':');
for (size_t i = 0; i < env.size(); i++) {
argv0 = env[i] + "/" + arg;
is_exe = is_executable(argv0.c_str(), &path);
if (is_exe) break;
if (arg[0] == '-') {
argv0 = env[i] + "/" + arg.substr(1);
is_exe = is_executable(argv0.c_str(), &path);
if (is_exe) break;
}
}
}
} else {
const char *cpwd = getenv("PWD");
string pwd = cpwd ? cpwd : "";
if (!pwd.empty()) {
argv0 = pwd + "/" + arg;
is_exe = is_executable(argv0.c_str(), &path);
}
if (pwd.empty() || !is_exe) {
char cwd[PATH_MAX];
if (getcwd(cwd, sizeof(cwd))) {
argv0 = string(cwd) + "/" + arg;
is_exe = is_executable(argv0.c_str(), &path);
}
}
}
}
#elif defined(__sun)
char exe[PATH_MAX];
if (realpath("/proc/self/path/a.out", exe)) {
path = exe;
}
#endif
return path;
}
bool symlink_create(string fname, string newname) {
std::error_code ec;
fname = expand_without_trailing_slash(fname);
newname = expand_without_trailing_slash(newname);
ghc::filesystem::path path1 = ghc::filesystem::path(fname);
ghc::filesystem::path path2 = ghc::filesystem::path(newname);
if (file_exists(fname)) {
if (!directory_exists(filename_path(newname)))
directory_create(filename_path(newname));
ghc::filesystem::create_symlink(path1, path2, ec);
return (ec.value() == 0);
} else if (directory_exists(fname)) {
if (!directory_exists(filename_path(newname)))
directory_create(filename_path(newname));
ghc::filesystem::create_directory_symlink(path1, path2, ec);
return (ec.value() == 0);
}
return false;
}
bool symlink_copy(string fname, string newname) {
std::error_code ec;
fname = expand_without_trailing_slash(fname);
newname = expand_without_trailing_slash(newname);
ghc::filesystem::path path1 = ghc::filesystem::path(fname);
ghc::filesystem::path path2 = ghc::filesystem::path(newname);
if (symlink_exists(fname)) {
if (!directory_exists(filename_path(newname)))
directory_create(filename_path(newname));
ghc::filesystem::copy_symlink(path1, path2, ec);
return (ec.value() == 0);
}
return false;
}
bool symlink_exists(string fname) {
std::error_code ec;
fname = expand_without_trailing_slash(fname);
ghc::filesystem::path path = ghc::filesystem::path(fname);
return (ghc::filesystem::exists(path, ec) && ec.value() == 0 &&
ghc::filesystem::is_symlink(path, ec) && ec.value() == 0);
}
bool hardlink_create(string fname, string newname) {
fname = expand_without_trailing_slash(fname);
newname = expand_without_trailing_slash(newname);
if (file_exists(fname)) {
if (!directory_exists(filename_path(newname)))
directory_create(filename_path(newname));
#if defined(_WIN32)
std::error_code ec;
const ghc::filesystem::path path1 = ghc::filesystem::path(fname);
const ghc::filesystem::path path2 = ghc::filesystem::path(newname);
ghc::filesystem::create_hard_link(path1, path2, ec);
return (ec.value() == 0);
#else
return (!link(fname.c_str(), newname.c_str()));
#endif
}
return false;
}
std::uintmax_t file_numblinks(string fname) {
std::error_code ec;
fname = expand_without_trailing_slash(fname);
if (file_exists(fname)) {
int fd = file_bin_open(fname, FD_RDONLY);
if (fd != -1) {
std::uintmax_t result = file_bin_numblinks(fd);
file_bin_close(fd);
return result;
}
}
return 0;
}
std::uintmax_t file_bin_numblinks(int fd) {
#if defined(_WIN32)
BY_HANDLE_FILE_INFORMATION info;
if (GetFileInformationByHandle((HANDLE)_get_osfhandle(fd), &info)) {
return info.nNumberOfLinks;
}
#else
struct stat info;
if (!fstat(fd, &info)) {
return info.st_nlink;
}
#endif
return 0;
}
string file_bin_hardlinks(int fd, string dnames, bool recursive) {
string paths;
#if defined(_WIN32)
BY_HANDLE_FILE_INFORMATION info;
if (GetFileInformationByHandle((HANDLE)_get_osfhandle(fd), &info) && info.nNumberOfLinks) {
#else
struct stat info;
if (!fstat(fd, &info) && info.st_nlink) {
#endif
file_bin_hardlinks_result.clear();
struct file_bin_hardlinks_struct s;
vector<string> in = string_split(dnames, '\n');
if (in.empty()) return paths;
vector<string> first;
first.push_back(in[0]);
in.erase(in.begin());
s.x = first;
s.y = in;
s.i = 0;
s.j = 0;
s.recursive = recursive;
s.info = info;
file_bin_hardlinks_helper(&s);
for (unsigned i = 0; i < file_bin_hardlinks_result.size(); i++) {
message_pump(); paths += file_bin_hardlinks_result[i] + "\n";
}
if (!paths.empty()) {
paths.pop_back();
}
}
return paths;
}
string executable_get_directory() {
return filename_path(executable_get_pathname());
}
string executable_get_filename() {
return filename_name(executable_get_pathname());
}
string environment_get_variable(string name) {
#if defined(_WIN32)
string value;
DWORD length = 0;
wstring u8name = widen(name);
if ((length = GetEnvironmentVariableW(u8name.c_str(), nullptr, 0)) != 0) {
wchar_t *buffer = new wchar_t[length]();
if (GetEnvironmentVariableW(u8name.c_str(), buffer, length) != 0) {
value = narrow(buffer);
}
delete[] buffer;
}
return value;
#else
char *value = getenv(name.c_str());
return value ? value : "";
#endif
}
bool environment_get_variable_exists(string name) {
#if defined(_WIN32)
wstring u8name = widen(name);
return (!(GetEnvironmentVariableW(u8name.c_str(), nullptr, 0) == 0 &&
GetLastError() == ERROR_ENVVAR_NOT_FOUND));
#else
return (getenv(name.c_str()) != nullptr);
#endif
}
bool environment_set_variable(string name, string value) {
#if defined(_WIN32)
wstring u8name = widen(name);
wstring u8value = widen(value);
return (SetEnvironmentVariableW(u8name.c_str(), u8value.c_str()) != 0);
#else
return (setenv(name.c_str(), value.c_str(), 1) == 0);
#endif
}
bool environment_unset_variable(string name) {
#if defined(_WIN32)
wstring u8name = widen(name);
return (SetEnvironmentVariableW(u8name.c_str(), nullptr) != 0);
#else
return (unsetenv(name.c_str()) == 0);
#endif
}
string environment_expand_variables(string str) {
if (str.find("${") == string::npos) return str;
string pre = str.substr(0, str.find("${"));
string post = str.substr(str.find("${") + 2);
if (post.find('}') == string::npos) return str;
string variable = post.substr(0, post.find('}'));
size_t pos = post.find('}') + 1; post = post.substr(pos);
string value = environment_get_variable(variable);
if (!environment_get_variable_exists(variable))
return str.substr(0, pos) + environment_expand_variables(str.substr(pos));
return environment_expand_variables(pre + value + post);
}
bool file_exists(string fname) {
std::error_code ec;
fname = expand_without_trailing_slash(fname);
const ghc::filesystem::path path = ghc::filesystem::path(fname);
return (ghc::filesystem::exists(path, ec) && ec.value() == 0 &&
(!ghc::filesystem::is_directory(path, ec)) && ec.value() == 0);
}
bool directory_exists(string dname) {
std::error_code ec;
dname = expand_without_trailing_slash(dname);
dname = expand_without_trailing_slash(dname);
const ghc::filesystem::path path = ghc::filesystem::path(dname);
return (ghc::filesystem::exists(path, ec) && ec.value() == 0 &&
ghc::filesystem::is_directory(path, ec) && ec.value() == 0);
}
string filename_canonical(string fname) {
std::error_code ec;
fname = expand_without_trailing_slash(fname);
const ghc::filesystem::path path = ghc::filesystem::path(fname);
string result = ghc::filesystem::weakly_canonical(path, ec).string();
if (ec.value() == 0 && directory_exists(result)) {
return expand_with_trailing_slash(result);
}
return (ec.value() == 0) ? result : "";
}
string filename_absolute(string fname) {
string result;
if (directory_exists(fname)) {
result = expand_with_trailing_slash(fname);
} else if (file_exists(fname)) {
result = expand_without_trailing_slash(fname);
}
return result;
}
bool filename_equivalent(string fname1, string fname2) {
std::error_code ec;
fname1 = expand_without_trailing_slash(fname1);
fname2 = expand_without_trailing_slash(fname2);
ghc::filesystem::path path1 = ghc::filesystem::path(fname1);
ghc::filesystem::path path2 = ghc::filesystem::path(fname2);
if (ghc::filesystem::exists(path1, ec) && ec.value() == 0 &&
ghc::filesystem::exists(path2, ec) && ec.value() == 0) {
return (ghc::filesystem::equivalent(path1, path2, ec) && ec.value() == 0);
}
return false;
}
std::uintmax_t file_size(string fname) {
std::error_code ec;
if (!file_exists(fname)) return 0;
fname = expand_without_trailing_slash(fname);
const ghc::filesystem::path path = ghc::filesystem::path(fname);
std::uintmax_t result = ghc::filesystem::file_size(path, ec);
return (ec.value() == 0) ? result : 0;
}
bool file_delete(string fname) {
std::error_code ec;
if (!file_exists(fname)) return false;
fname = expand_without_trailing_slash(fname);
const ghc::filesystem::path path = ghc::filesystem::path(fname);
return (ghc::filesystem::remove(path, ec) && ec.value() == 0);
}
bool directory_create(string dname) {
std::error_code ec;
dname = expand_without_trailing_slash(dname);
const ghc::filesystem::path path = ghc::filesystem::path(dname);
return (ghc::filesystem::create_directories(path, ec) && ec.value() == 0);
}
bool file_rename(string oldname, string newname) {
std::error_code ec;
if (!file_exists(oldname)) return false;
oldname = expand_without_trailing_slash(oldname);
newname = expand_without_trailing_slash(newname);
if (!directory_exists(filename_path(newname)))
directory_create(filename_path(newname));
const ghc::filesystem::path path1 = ghc::filesystem::path(oldname);
const ghc::filesystem::path path2 = ghc::filesystem::path(newname);
ghc::filesystem::rename(path1, path2, ec);
return (ec.value() == 0);
}
bool file_copy(string fname, string newname) {
std::error_code ec;
if (!file_exists(fname)) return false;
fname = expand_without_trailing_slash(fname);
newname = expand_without_trailing_slash(newname);
if (!directory_exists(filename_path(newname)))
directory_create(filename_path(newname));
const ghc::filesystem::path path1 = ghc::filesystem::path(fname);
const ghc::filesystem::path path2 = ghc::filesystem::path(newname);
ghc::filesystem::copy(path1, path2, ec);
return (ec.value() == 0);
}
std::uintmax_t directory_size(string dname) {
std::error_code ec;
std::uintmax_t result = 0;
if (!directory_exists(dname)) return 0;
const ghc::filesystem::path path = ghc::filesystem::path(expand_without_trailing_slash(dname));
if (ghc::filesystem::exists(path, ec)) {
ghc::filesystem::directory_iterator end_itr;
for (ghc::filesystem::directory_iterator dir_ite(path, ec); dir_ite != end_itr; dir_ite.increment(ec)) {
message_pump(); if (ec.value() != 0) { break; }
ghc::filesystem::path file_path = ghc::filesystem::path(filename_absolute(dir_ite->path().string()));
if (!directory_exists(file_path.string())) {
result += file_size(file_path.string());
} else {
result += directory_size(file_path.string());
}
}
}
return result;
}
bool directory_destroy(string dname) {
std::error_code ec;
if (!directory_exists(dname)) return false;
dname = expand_without_trailing_slash(dname);
const ghc::filesystem::path path = ghc::filesystem::path(dname);
return (ghc::filesystem::remove_all(path, ec) && ec.value() == 0);
}
unsigned directory_contents_get_length() {
return (unsigned)directory_contents.size();
}
unsigned directory_contents_get_cntfiles() {
return directory_contents_cntfiles;
}
unsigned directory_contents_get_maxfiles() {
return directory_contents_maxfiles;
}
void directory_contents_set_maxfiles(unsigned maxfiles) {
directory_contents_maxfiles = maxfiles;
}
static inline vector<string> directory_contents_helper(string dname, string pattern, bool includedirs) {
std::error_code ec; vector<string> result;
if (!directory_exists(dname)) return result;
dname = expand_without_trailing_slash(dname);
const ghc::filesystem::path path = ghc::filesystem::path(dname);
if (directory_exists(dname)) {
ghc::filesystem::directory_iterator end_itr;