mirror of https://github.com/AxioDL/nod.git
344 lines
9.0 KiB
C++
344 lines
9.0 KiB
C++
#ifndef __NOD_UTIL_HPP__
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#define __NOD_UTIL_HPP__
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#if _WIN32 && UNICODE
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#include <wctype.h>
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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 <windows.h>
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#else
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#include <ctype.h>
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#include <sys/file.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/param.h>
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#include <sys/statvfs.h>
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#endif
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#include <sys/stat.h>
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#include <string>
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#include <cstring>
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#include <algorithm>
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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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{
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/* define our own min/max to avoid MSVC BS */
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template<typename T>
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inline T min(T a, T b) { return a < b ? a : b; }
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template<typename T>
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inline T max(T a, T b) { return a > b ? a : b; }
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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 && UNICODE
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#define NOD_UCS2 1
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typedef struct _stat Sstat;
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static inline int Mkdir(const wchar_t* path, int) {return _wmkdir(path);}
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static inline int Stat(const wchar_t* path, Sstat* statout) {return _wstat(path, statout);}
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#else
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typedef struct stat Sstat;
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static inline int Mkdir(const char* path, mode_t mode) {return mkdir(path, mode);}
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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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/* String-converting views */
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#if NOD_UCS2
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typedef wchar_t SystemChar;
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typedef std::wstring SystemString;
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static inline void ToLower(SystemString& str)
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{std::transform(str.begin(), str.end(), str.begin(), towlower);}
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static inline void ToUpper(SystemString& str)
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{std::transform(str.begin(), str.end(), str.begin(), towupper);}
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static inline size_t StrLen(const SystemChar* str) {return wcslen(str);}
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class SystemUTF8View
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{
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std::string m_utf8;
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public:
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explicit SystemUTF8View(const SystemString& str)
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{
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int len = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), str.size(), nullptr, 0, nullptr, nullptr);
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m_utf8.assign(len, '\0');
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WideCharToMultiByte(CP_UTF8, 0, str.c_str(), str.size(), &m_utf8[0], len, nullptr, nullptr);
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}
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inline const std::string& utf8_str() {return m_utf8;}
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};
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class SystemStringView
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{
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std::wstring m_sys;
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public:
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explicit SystemStringView(const std::string& str)
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{
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int len = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), str.size(), nullptr, 0);
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m_sys.assign(len, L'\0');
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MultiByteToWideChar(CP_UTF8, 0, str.c_str(), str.size(), &m_sys[0], len);
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}
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inline const std::wstring& sys_str() {return m_sys;}
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};
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#ifndef _S
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#define _S(val) L ## val
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#endif
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#else
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typedef char SystemChar;
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typedef std::string SystemString;
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static inline void ToLower(SystemString& str)
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{std::transform(str.begin(), str.end(), str.begin(), tolower);}
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static inline void ToUpper(SystemString& str)
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{std::transform(str.begin(), str.end(), str.begin(), toupper);}
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static inline size_t StrLen(const SystemChar* str) {return strlen(str);}
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class SystemUTF8View
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{
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const std::string& m_utf8;
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public:
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explicit SystemUTF8View(const SystemString& str)
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: m_utf8(str) {}
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inline const std::string& utf8_str() {return m_utf8;}
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};
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class SystemStringView
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{
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const std::string& m_sys;
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public:
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explicit SystemStringView(const std::string& str)
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: m_sys(str) {}
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inline const std::string& sys_str() {return m_sys;}
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};
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#ifndef _S
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#define _S(val) val
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#endif
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#endif
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static inline void Unlink(const SystemChar* file)
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{
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#if NOD_UCS2
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_wunlink(file);
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#else
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unlink(file);
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#endif
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}
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static inline int StrCmp(const SystemChar* str1, const SystemChar* str2)
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{
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#if NOD_UCS2
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return wcscmp(str1, str2);
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#else
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return strcmp(str1, str2);
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#endif
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}
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static inline int StrCaseCmp(const SystemChar* str1, const SystemChar* str2)
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{
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#if NOD_UCS2
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return _wcsicmp(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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{
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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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{
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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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{
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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) |
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((val & 0x00FF000000000000ULL) >> 40) |
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((val & 0x0000FF0000000000ULL) >> 24) |
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((val & 0x000000FF00000000ULL) >> 8) |
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((val & 0x00000000FF000000ULL) << 8) |
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((val & 0x0000000000FF0000ULL) << 24) |
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((val & 0x000000000000FF00ULL) << 40) |
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((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
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{
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None = 0,
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Read,
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Write
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};
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static inline FILE* Fopen(const SystemChar* path, const SystemChar* mode, FileLockType lock=FileLockType::None)
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{
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#if NOD_UCS2
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FILE* fp = _wfopen(path, mode);
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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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{
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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, &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, "flock %s: %s", 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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{
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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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{
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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 SystemChar* path, size_t reqSz)
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{
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#if _WIN32
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ULARGE_INTEGER freeBytes;
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wchar_t buf[1024];
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wchar_t* end;
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DWORD ret = GetFullPathNameW(path, 1024, buf, &end);
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if (!ret || ret > 1024)
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LogModule.report(logvisor::Fatal, _S("GetFullPathNameW %s"), path);
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if (end)
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end[0] = L'\0';
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if (!GetDiskFreeSpaceExW(buf, &freeBytes, nullptr, nullptr))
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LogModule.report(logvisor::Fatal, _S("GetDiskFreeSpaceExW %s: %d"), path, GetLastError());
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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::Fatal, "statvfs %s: %s", path, strerror(errno));
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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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#if __GNUC__
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__attribute__((__format__ (__printf__, 1, 2)))
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#endif
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static inline void Printf(const SystemChar* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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#if NOD_UCS2
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vwprintf(fmt, args);
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#else
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vprintf(fmt, args);
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#endif
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va_end(args);
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}
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}
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#endif // __NOD_UTIL_HPP__
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