mirror of
https://github.com/zeldaret/ph
synced 2026-05-24 07:10:52 -04:00
Aetias
265 lines
8.6 KiB
C
265 lines
8.6 KiB
C
#ifndef __UTIL_H
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#define __UTIL_H
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#define PRINT_FATAL(...) fprintf(stderr, __VA_ARGS__)
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#define FATAL(...) do { PRINT_FATAL(__VA_ARGS__); return false; } while (0)
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#define WRITE16(buf,val) do { ((uint8_t*) buf)[0] = (val) & 0xFF; ((uint8_t*) buf)[1] = ((val) >> 8) & 0xFF; } while (0)
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#define WRITE24(buf,val) do { ((uint8_t*) buf)[0] = (val) & 0xFF; ((uint8_t*) buf)[1] = ((val) >> 8) & 0xFF; ((uint8_t*) buf)[2] = ((val) >> 16) & 0xFF; } while (0)
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#define WRITE32(buf,val) do { ((uint8_t*) buf)[0] = (val) & 0xFF; ((uint8_t*) buf)[1] = ((val) >> 8) & 0xFF; ((uint8_t*) buf)[2] = ((val) >> 16) & 0xFF; ((uint8_t*) buf)[3] = ((val) >> 24) & 0xFF; } while (0)
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#define READ16(buf) (((uint8_t*) buf)[0] | (((uint8_t*) buf)[1] << 8))
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#define READ24(buf) (((uint8_t*) buf)[0] | (((uint8_t*) buf)[1] << 8) | (((uint8_t*) buf)[2] << 16))
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#define READ32(buf) (((uint8_t*) buf)[0] | (((uint8_t*) buf)[1] << 8) | (((uint8_t*) buf)[2] << 16) | (((uint8_t*) buf)[3] << 24))
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#define REVERSE32(val) ((val >> 24) | ((val & 0xff0000) >> 8) | ((val & 0xff00) << 8) | ((val & 0xff) << 24))
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#if defined(_WIN32) || defined(__MSYS__)
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# define __UTIL_WINDOWS
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# include <Windows.h>
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#elif __linux__
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# define __UTIL_LINUX
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# include <errno.h>
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# include <sys/stat.h>
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# include <iconv.h>
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# include <dirent.h>
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# include <unistd.h>
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#else
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# error "Target platform not supported"
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#endif
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bool MakeDir(const char *dir) {
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#ifdef __UTIL_WINDOWS
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if (CreateDirectoryA(dir, NULL)) return true;
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if (GetLastError() == ERROR_ALREADY_EXISTS) return true;
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FATAL("Failed to make directory '%s'\n", dir);
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#elif defined(__UTIL_LINUX)
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struct stat dirStat;
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if (stat(dir, &dirStat) != 0) {
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if (mkdir(dir, 0777) != 0) FATAL("Failed to make directory '%s'\n", dir);
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return true;
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}
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if (!S_ISDIR(dirStat.st_mode)) FATAL("Could not make directory '%s' due to a file with the same name\n", dir);
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return true;
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#endif
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}
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bool GetCurrentDir(char *dir, size_t dirSize) {
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#ifdef __UTIL_WINDOWS
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return GetCurrentDirectory(dirSize, dir) > 0;
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#elif defined(__UTIL_LINUX)
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return getcwd(dir, dirSize) != NULL;
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#endif
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}
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bool ChangeDir(const char *dir) {
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#ifdef __UTIL_WINDOWS
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if (SetCurrentDirectory(dir)) return true;
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#elif defined(__UTIL_LINUX)
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if (chdir(dir) == 0) return true;
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#endif
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char cwd[256];
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if (!GetCurrentDir(cwd, sizeof(cwd))) strcpy(cwd, "[unknown]");
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FATAL("Failed to enter directory '%s' from current directory '%s'\n", dir, cwd);
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}
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typedef struct {
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const char *name;
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#ifdef __UTIL_WINDOWS
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HANDLE handle;
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#elif defined(__UTIL_LINUX)
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FILE *fp;
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#endif
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} File;
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bool FileOpenRead(const char *name, File *file) {
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#ifdef __UTIL_WINDOWS
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HANDLE handle = CreateFileA(name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (handle != INVALID_HANDLE_VALUE) {
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file->name = name;
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file->handle = handle;
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return true;
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}
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#elif defined(__UTIL_LINUX)
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FILE *fp = fopen(name, "rb");
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if (fp != NULL) {
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file->name = name;
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file->fp = fp;
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return true;
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}
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#endif
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FATAL("Failed to open file '%s' for reading\n", name);
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}
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bool FileOpenWrite(const char *name, File *file) {
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#ifdef __UTIL_WINDOWS
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HANDLE handle = CreateFileA(name, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (handle != INVALID_HANDLE_VALUE) {
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file->name = name;
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file->handle = handle;
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return true;
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}
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#elif defined(__UTIL_LINUX)
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FILE *fp = fopen(name, "wb");
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if (fp != NULL) {
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file->name = name;
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file->fp = fp;
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return true;
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}
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#endif
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FATAL("Failed to open file '%s' for writing\n", name);
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}
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void FileClose(File *file) {
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#ifdef __UTIL_WINDOWS
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CloseHandle(file->handle);
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file->name = NULL;
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file->handle = NULL;
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#elif defined(__UTIL_LINUX)
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fclose(file->fp);
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file->name = NULL;
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file->fp = NULL;
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#endif
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}
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size_t FileRead(const File *file, void *buf, size_t size, size_t count) {
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#ifdef __UTIL_WINDOWS
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DWORD bytesRead;
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if (ReadFile(file->handle, buf, size * count, &bytesRead, NULL)) {
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if (bytesRead > 0) return bytesRead / size;
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}
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#elif defined(__UTIL_LINUX)
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size_t countRead = fread(buf, size, count, file->fp);
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if (countRead > 0) return countRead;
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#endif
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PRINT_FATAL("Failed to read %ld * %ld bytes from '%s'\n", count, size, file->name);
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return 0;
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}
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bool FileWrite(const File *file, const void *buf, size_t size, size_t count) {
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#ifdef __UTIL_WINDOWS
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if (WriteFile(file->handle, buf, size * count, NULL, NULL)) return true;
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#elif defined(__UTIL_LINUX)
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if (fwrite(buf, size, count, file->fp) == count) return true;
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#endif
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FATAL("Failed to write %ld * %ld bytes to '%s'\n", count, size, file->name);
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}
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size_t FileSize(const File *file) {
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#ifdef __UTIL_WINDOWS
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DWORD sizeHigh;
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DWORD sizeLow = GetFileSize(file->handle, &sizeHigh);
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return sizeLow | ((size_t)(sizeHigh) << 32);
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#elif defined(__UTIL_LINUX)
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size_t pos = ftell(file->fp);
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fseek(file->fp, 0, SEEK_END);
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size_t size = ftell(file->fp);
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fseek(file->fp, pos, SEEK_SET);
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return size;
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#endif
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}
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size_t FileOffset(const File *file) {
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#ifdef __UTIL_WINDOWS
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LONG offsetHigh = 0;
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DWORD offsetLow = SetFilePointer(file->handle, 0, &offsetHigh, FILE_CURRENT);
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return offsetLow | ((size_t)(offsetHigh) << 32);
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#elif defined(__UTIL_LINUX)
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return ftell(file->fp);
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#endif
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}
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void FileGoTo(const File *file, size_t offset) {
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#ifdef __UTIL_WINDOWS
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LONG offsetHigh = offset >> 32;
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LONG offsetLow = offset & 0xffffffff;
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SetFilePointer(file->handle, offsetLow, &offsetHigh, FILE_BEGIN);
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#elif defined(__UTIL_LINUX)
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fseek(file->fp, offset, SEEK_SET);
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#endif
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}
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bool WcharToUtf8(wchar_t *in, size_t inSize, char *out, size_t outSize, size_t *pResultSize) {
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#ifdef __UTIL_WINDOWS
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size_t resultSize = WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, in, inSize / sizeof(wchar_t), out, outSize, NULL, NULL);
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if (resultSize == 0) FATAL("Failed to convert to UTF-8\n");
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*pResultSize = resultSize;
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return true;
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#elif defined(__UTIL_LINUX)
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iconv_t convDesc = iconv_open("UTF-8", "UTF-16");
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if (convDesc == (iconv_t) -1) FATAL("Failed to get conversion description to UTF-8\n");
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size_t remainingBytes = outSize;
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if (iconv(convDesc, (char**) &in, &inSize, &out, &remainingBytes) == -1) {
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FATAL("Failed to convert to UTF-8: %s (%d)\n", strerror(errno), errno);
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}
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if (inSize > 0) FATAL("Some characters were not converted to UTF-8\n");
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*pResultSize = outSize - remainingBytes;
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return true;
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#endif
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}
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bool Utf8ToWchar(char *in, size_t inSize, wchar_t *out, size_t outSize) {
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#ifdef __UTIL_WINDOWS
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size_t resultSize = MultiByteToWideChar(CP_UTF8, 0, in, inSize, out, outSize / sizeof(wchar_t));
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if (resultSize == 0) FATAL("Failed to convert from UTF-8: %d\n", GetLastError());
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return true;
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#elif defined(__UTIL_LINUX)
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iconv_t convDesc = iconv_open("UTF-16", "UTF-8");
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if (convDesc == (iconv_t) -1) FATAL("Failed to get conversion description from UTF-8\n");
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size_t remainingBytes = outSize;
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wchar_t *result = out;
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if (iconv(convDesc, &in, &inSize, (char**) &out, &remainingBytes) == -1) {
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FATAL("Failed to convert from UTF-8: %s (%d)\n", strerror(errno), errno);
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}
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if (inSize > 0) FATAL("Some characters were not converted from UTF-8\n");
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// Remove 0xFEFF header
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if (*result == 0xfeff) {
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size_t numChars = (outSize - remainingBytes) / sizeof(wchar_t) - 1;
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memmove(result, result + 1, numChars * sizeof(wchar_t));
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result[numChars] = '\0';
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}
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return true;
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#endif
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}
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bool AllocFullPath(const char *path, char **pFullPath) {
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#ifdef __UTIL_WINDOWS
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if (path[0] == '/') {
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// Remove drive letter, e.g. /c/Projects/ph/ -> /Projects/ph/
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const char *root = strchr(path + 1, '/');
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if (root - path == 2) path = root;
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}
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size_t size = GetFullPathNameA(path, 0, NULL, NULL);
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char *fullPath = malloc(size);
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size_t resultSize = GetFullPathNameA(path, size, fullPath, NULL);
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if (resultSize == 0 || resultSize > size) FATAL("Failed to get full path for '%s'\n", path);
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*pFullPath = fullPath;
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return true;
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#elif defined(__UTIL_LINUX)
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char *fullPath = realpath(path, NULL);
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if (fullPath == NULL) FATAL("Failed to get full path for '%s'\n", path);
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*pFullPath = fullPath;
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return true;
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#endif
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}
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void FreeFullPath(char **pFullPath) {
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free(*pFullPath);
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*pFullPath = NULL;
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}
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char* SplitLine(char *str) {
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while (*str != '\n' && *str != '\r') {
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if (*str == '\0') return str;
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++str;
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}
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*str++ = '\0';
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while (*str == '\n' || *str == '\r') ++str;
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return str;
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}
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#endif
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