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annotate src/common.c @ 47:7cb4ca7cf257

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Use a common.c file to hold concurrent functions Also I fixed that 1.4 KB bug I think
author Paper <mrpapersonic@gmail.com>
date Sat, 21 May 2022 18:41:54 -0400
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children 652343b56a60
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7cb4ca7cf257 Use a common.c file to hold concurrent functions
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1 #include <stdio.h>
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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2 #include <stdint.h>
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3
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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4 void set_data(unsigned char magic[], uint16_t version, FILE* target) {
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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5 int i;
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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6 fseek(target, 0x46, SEEK_SET);
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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7 fputc(version, target);
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8 for (i=0; i<=sizeof(*magic); ++i) {
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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9 fseek(target, 0x18+i, SEEK_SET);
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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10 fputc(magic[i], target);
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11 }
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12 }
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13
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14 int copy_file(char* source_file, char* target_file) {
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15 char ch[4096];
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16 FILE *source, *target;
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17
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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18 source = fopen(source_file, "rb");
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19
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20 if (source == NULL)
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21 return 1;
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22
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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23 target = fopen(target_file, "wb");
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24
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25 if (target == NULL) {
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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26 fclose(source);
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27 return 1;
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28 }
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29
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30 while (fgetc(source) != EOF) {
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31 size_t b = fread(ch, 1, sizeof(ch), source);
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32 if (b)
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33 fwrite(ch, 1, b, target);
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34 }
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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35
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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36 fclose(target);
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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37 fclose(source);
7cb4ca7cf257 Use a common.c file to hold concurrent functions
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38 return 0;
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39 }