1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// Copyright (c) 2015 YamaArashi
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <errno.h>
#include <limits.h>
#include "global.h"
#include "util.h"
bool ParseNumber(char* s, char** end, int radix, int* intValue) {
char* localEnd;
if (end == NULL)
end = &localEnd;
errno = 0;
const long longValue = strtol(s, end, radix);
if (*end == s)
return false; // not a number
if ((longValue == LONG_MIN || longValue == LONG_MAX) && errno == ERANGE)
return false;
if (longValue > INT_MAX)
return false;
if (longValue < INT_MIN)
return false;
*intValue = (int)longValue;
return true;
}
char* GetFileExtension(char* path) {
char* extension = path;
while (*extension != 0)
extension++;
while (extension > path && *extension != '.')
extension--;
if (extension == path)
return NULL;
extension++;
if (*extension == 0)
return NULL;
return extension;
}
unsigned char* ReadWholeFile(char* path, int* size) {
FILE* fp = fopen(path, "rb");
if (fp == NULL)
FATAL_ERROR("Failed to open \"%s\" for reading.\n", path);
fseek(fp, 0, SEEK_END);
*size = ftell(fp);
unsigned char* buffer = malloc(*size);
if (buffer == NULL)
FATAL_ERROR("Failed to allocate memory for reading \"%s\".\n", path);
rewind(fp);
if (fread(buffer, *size, 1, fp) != 1)
FATAL_ERROR("Failed to read \"%s\".\n", path);
fclose(fp);
return buffer;
}
unsigned char* ReadWholeFileZeroPadded(char* path, int* size, int padAmount) {
FILE* fp = fopen(path, "rb");
if (fp == NULL)
FATAL_ERROR("Failed to open \"%s\" for reading.\n", path);
fseek(fp, 0, SEEK_END);
*size = ftell(fp);
unsigned char* buffer = calloc(*size + padAmount, 1);
if (buffer == NULL)
FATAL_ERROR("Failed to allocate memory for reading \"%s\".\n", path);
rewind(fp);
if (fread(buffer, *size, 1, fp) != 1)
FATAL_ERROR("Failed to read \"%s\".\n", path);
fclose(fp);
return buffer;
}
void WriteWholeFile(char* path, void* buffer, int bufferSize) {
FILE* fp = fopen(path, "wb");
if (fp == NULL)
FATAL_ERROR("Failed to open \"%s\" for writing.\n", path);
if (fwrite(buffer, bufferSize, 1, fp) != 1)
FATAL_ERROR("Failed to write to \"%s\".\n", path);
fclose(fp);
}
|
