mirror of https://github.com/AxioDL/nod.git
260 lines
7.0 KiB
C++
260 lines
7.0 KiB
C++
#pragma once
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#if _WIN32 && UNICODE
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#include <cwctype>
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#include <direct.h>
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN 1
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#endif
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <nowide/stackstring.hpp>
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#include <windows.h>
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#if defined(WINAPI_FAMILY) && WINAPI_FAMILY != WINAPI_FAMILY_DESKTOP_APP
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#define WINDOWS_STORE 1
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#else
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#define WINDOWS_STORE 0
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#endif
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#else
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#include <cctype>
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#include <cerrno>
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#include <sys/file.h>
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#include <sys/param.h>
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#include <sys/statvfs.h>
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#include <unistd.h>
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#endif
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#include <sys/stat.h>
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#include <algorithm>
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#include <cstring>
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#include <string>
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#include <string_view>
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#include <logvisor/logvisor.hpp>
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#ifdef _MSC_VER
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#pragma warning(disable : 4996)
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#include <sys/stat.h>
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#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
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#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
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#endif
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#if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
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#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
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#endif
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#if !defined(S_ISLNK)
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#define S_ISLNK(m) 0
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#endif
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#endif
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#undef min
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#undef max
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namespace nod {
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/* define our own min/max to avoid MSVC BS */
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template <typename T>
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constexpr T min(T a, T b) {
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return a < b ? a : b;
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}
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template <typename T>
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constexpr T max(T a, T b) {
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return a > b ? a : b;
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}
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/* template-based div for flexible typing and avoiding a library call */
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template <typename T>
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constexpr auto div(T a, T b) {
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struct DivTp {
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T quot, rem;
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};
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return DivTp{a / b, a % b};
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}
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/* Log Module */
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extern logvisor::Module LogModule;
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/* filesystem char type */
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#if _WIN32
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static inline int Mkdir(const char* path, int) {
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const nowide::wstackstring str(path);
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return _wmkdir(str.get());
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}
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using Sstat = struct ::_stat64;
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static inline int Stat(const char* path, Sstat* statout) {
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const nowide::wstackstring wpath(path);
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return _wstat64(wpath.get(), statout);
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}
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#else
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static inline int Mkdir(const char* path, mode_t mode) { return CreateDirectoryA(path, mode); }
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typedef struct stat Sstat;
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static inline int Stat(const char* path, Sstat* statout) { return stat(path, statout); }
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#endif
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static inline int StrCaseCmp(const char* str1, const char* str2) {
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#ifdef _MSC_VER
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return _stricmp(str1, str2);
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#else
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return strcasecmp(str1, str2);
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#endif
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}
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#undef bswap16
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#undef bswap32
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#undef bswap64
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/* Type-sensitive byte swappers */
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template <typename T>
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static inline T bswap16(T val) {
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#if __GNUC__
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return __builtin_bswap16(val);
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#elif _WIN32
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return _byteswap_ushort(val);
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#else
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return (val = (val << 8) | ((val >> 8) & 0xFF));
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#endif
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}
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template <typename T>
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static inline T bswap32(T val) {
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#if __GNUC__
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return __builtin_bswap32(val);
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#elif _WIN32
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return _byteswap_ulong(val);
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#else
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val = (val & 0x0000FFFF) << 16 | (val & 0xFFFF0000) >> 16;
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val = (val & 0x00FF00FF) << 8 | (val & 0xFF00FF00) >> 8;
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return val;
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#endif
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}
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template <typename T>
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static inline T bswap64(T val) {
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#if __GNUC__
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return __builtin_bswap64(val);
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#elif _WIN32
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return _byteswap_uint64(val);
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#else
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return ((val & 0xFF00000000000000ULL) >> 56) | ((val & 0x00FF000000000000ULL) >> 40) |
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((val & 0x0000FF0000000000ULL) >> 24) | ((val & 0x000000FF00000000ULL) >> 8) |
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((val & 0x00000000FF000000ULL) << 8) | ((val & 0x0000000000FF0000ULL) << 24) |
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((val & 0x000000000000FF00ULL) << 40) | ((val & 0x00000000000000FFULL) << 56);
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#endif
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}
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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static inline int16_t SBig(int16_t val) { return bswap16(val); }
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static inline uint16_t SBig(uint16_t val) { return bswap16(val); }
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static inline int32_t SBig(int32_t val) { return bswap32(val); }
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static inline uint32_t SBig(uint32_t val) { return bswap32(val); }
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static inline int64_t SBig(int64_t val) { return bswap64(val); }
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static inline uint64_t SBig(uint64_t val) { return bswap64(val); }
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static inline int16_t SLittle(int16_t val) { return val; }
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static inline uint16_t SLittle(uint16_t val) { return val; }
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static inline int32_t SLittle(int32_t val) { return val; }
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static inline uint32_t SLittle(uint32_t val) { return val; }
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static inline int64_t SLittle(int64_t val) { return val; }
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static inline uint64_t SLittle(uint64_t val) { return val; }
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#else
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static inline int16_t SLittle(int16_t val) { return bswap16(val); }
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static inline uint16_t SLittle(uint16_t val) { return bswap16(val); }
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static inline int32_t SLittle(int32_t val) { return bswap32(val); }
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static inline uint32_t SLittle(uint32_t val) { return bswap32(val); }
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static inline int64_t SLittle(int64_t val) { return bswap64(val); }
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static inline uint64_t SLittle(uint64_t val) { return bswap64(val); }
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static inline int16_t SBig(int16_t val) { return val; }
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static inline uint16_t SBig(uint16_t val) { return val; }
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static inline int32_t SBig(int32_t val) { return val; }
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static inline uint32_t SBig(uint32_t val) { return val; }
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static inline int64_t SBig(int64_t val) { return val; }
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static inline uint64_t SBig(uint64_t val) { return val; }
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#endif
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#ifndef ROUND_UP_32
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#define ROUND_UP_32(val) (((val) + 31) & ~31)
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#define ROUND_UP_16(val) (((val) + 15) & ~15)
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#endif
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enum class FileLockType { None = 0, Read, Write };
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static inline FILE* Fopen(const char* path, const char* mode, FileLockType lock = FileLockType::None) {
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#if _MSC_VER
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const nowide::wstackstring wpath(path);
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const nowide::wshort_stackstring wmode(mode);
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FILE* fp = _wfopen(wpath.get(), wmode.get());
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if (!fp)
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return nullptr;
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#else
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FILE* fp = fopen(path, mode);
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if (!fp)
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return nullptr;
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#endif
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if (lock != FileLockType::None) {
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#if _WIN32
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OVERLAPPED ov = {};
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LockFileEx((HANDLE)(uintptr_t)_fileno(fp), (lock == FileLockType::Write) ? LOCKFILE_EXCLUSIVE_LOCK : 0, 0, 0, 1,
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&ov);
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#else
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if (flock(fileno(fp), ((lock == FileLockType::Write) ? LOCK_EX : LOCK_SH) | LOCK_NB))
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LogModule.report(logvisor::Error, FMT_STRING("flock {}: {}"), path, strerror(errno));
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#endif
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}
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return fp;
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}
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static inline int FSeek(FILE* fp, int64_t offset, int whence) {
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#if _WIN32
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return _fseeki64(fp, offset, whence);
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#elif __APPLE__ || __FreeBSD__
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return fseeko(fp, offset, whence);
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#else
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return fseeko64(fp, offset, whence);
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#endif
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}
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static inline int64_t FTell(FILE* fp) {
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#if _WIN32
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return _ftelli64(fp);
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#elif __APPLE__ || __FreeBSD__
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return ftello(fp);
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#else
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return ftello64(fp);
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#endif
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}
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static inline bool CheckFreeSpace(const char* path, size_t reqSz) {
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#if _WIN32
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ULARGE_INTEGER freeBytes;
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const nowide::wstackstring wpath(path);
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std::array<wchar_t, 1024> buf{};
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wchar_t* end = nullptr;
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DWORD ret = GetFullPathNameW(wpath.get(), 1024, buf.data(), &end);
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if (ret == 0 || ret > 1024) {
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LogModule.report(logvisor::Error, FMT_STRING("GetFullPathNameA {}"), path);
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return false;
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}
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if (end != nullptr) {
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end[0] = L'\0';
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}
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if (!GetDiskFreeSpaceExW(buf.data(), &freeBytes, nullptr, nullptr)) {
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LogModule.report(logvisor::Error, FMT_STRING("GetDiskFreeSpaceExA {}: {}"), path, GetLastError());
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return false;
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}
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return reqSz < freeBytes.QuadPart;
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#else
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struct statvfs svfs;
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if (statvfs(path, &svfs)) {
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LogModule.report(logvisor::Error, FMT_STRING("statvfs {}: {}"), path, strerror(errno));
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return false;
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}
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return reqSz < svfs.f_frsize * svfs.f_bavail;
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#endif
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}
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} // namespace nod
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