125 lines
2.2 KiB
C
125 lines
2.2 KiB
C
// Copyright (c) 2015 YamaArashi
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <errno.h>
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#include <limits.h>
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#include "global.h"
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#include "util.h"
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bool ParseNumber(char *s, char **end, int radix, int *intValue)
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{
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char *localEnd;
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if (end == NULL)
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end = &localEnd;
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errno = 0;
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const long longValue = strtol(s, end, radix);
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if (*end == s)
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return false; // not a number
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if ((longValue == LONG_MIN || longValue == LONG_MAX) && errno == ERANGE)
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return false;
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if (longValue > INT_MAX)
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return false;
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if (longValue < INT_MIN)
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return false;
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*intValue = (int)longValue;
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return true;
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}
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char *GetFileExtension(char *path)
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{
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char *extension = path;
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while (*extension != 0)
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extension++;
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while (extension > path && *extension != '.')
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extension--;
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if (extension == path)
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return NULL;
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extension++;
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if (*extension == 0)
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return NULL;
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return extension;
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}
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unsigned char *ReadWholeFile(char *path, int *size)
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{
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FILE *fp = fopen(path, "rb");
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if (fp == NULL)
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FATAL_ERROR("Failed to open \"%s\" for reading.\n", path);
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fseek(fp, 0, SEEK_END);
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*size = ftell(fp);
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unsigned char *buffer = malloc(*size);
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if (buffer == NULL)
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FATAL_ERROR("Failed to allocate memory for reading \"%s\".\n", path);
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rewind(fp);
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if (fread(buffer, *size, 1, fp) != 1)
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FATAL_ERROR("Failed to read \"%s\".\n", path);
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fclose(fp);
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return buffer;
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}
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unsigned char *ReadWholeFileZeroPadded(char *path, int *size, int padAmount)
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{
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FILE *fp = fopen(path, "rb");
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if (fp == NULL)
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FATAL_ERROR("Failed to open \"%s\" for reading.\n", path);
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fseek(fp, 0, SEEK_END);
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*size = ftell(fp);
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unsigned char *buffer = calloc(*size + padAmount, 1);
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if (buffer == NULL)
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FATAL_ERROR("Failed to allocate memory for reading \"%s\".\n", path);
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rewind(fp);
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if (fread(buffer, *size, 1, fp) != 1)
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FATAL_ERROR("Failed to read \"%s\".\n", path);
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fclose(fp);
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return buffer;
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}
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void WriteWholeFile(char *path, void *buffer, int bufferSize)
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{
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FILE *fp = fopen(path, "wb");
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if (fp == NULL)
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FATAL_ERROR("Failed to open \"%s\" for writing.\n", path);
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if (fwrite(buffer, bufferSize, 1, fp) != 1)
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FATAL_ERROR("Failed to write to \"%s\".\n", path);
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fclose(fp);
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}
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