108 lines
2.2 KiB
C++
108 lines
2.2 KiB
C++
#include "strings.h"
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uint32_t strlen(char* s) {
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uint32_t c = 0;
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while (s[c++]);
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return c;
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}
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bool strcmp(char* a, char* b, int max) {
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int index = 0;
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while (index < max) {
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if (a[index] != b[index])
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return false;
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index++;
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}
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return true;
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}
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char* split_on_first(char delimeter, char* string) {
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int index = 0;
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char current;
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while (current = string[index++]) {
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if (current == delimeter) {
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string[index-1] = 0;
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return string+index;
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}
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}
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return 0;
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}
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int string_split(char delimeter, char* string, char** pointer_array) {
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int index = 0;
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int last_split_index = 0;
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int split_count = 0;
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char current;
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while (current = string[index]) {
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if (current == delimeter) {
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string[index] = 0;
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pointer_array[split_count++] = (string+last_split_index);
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last_split_index = (index+1);
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}
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index++;
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}
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// Add remaining part of the string to the pointer_array
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pointer_array[split_count] = (string+last_split_index);
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return split_count;
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}
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void decode_filename(char* nice_name, char* filenamebuffer) {
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// Clear filenamebuffer
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for (int i=0; i<11; i++)
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filenamebuffer[i] = ' ';
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filenamebuffer[11] = 0;
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int fbIndex = 0;
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for (int i=0; i<12; i++) {
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if (nice_name[i] == 0)
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return;
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if (nice_name[i] == '.') {
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fbIndex = 8;
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continue;
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}
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if (nice_name[i] >= 0x61 && nice_name[i] <= 0x7f)
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filenamebuffer[fbIndex++] = nice_name[i] - 32;
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else
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filenamebuffer[fbIndex++] = nice_name[i];
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}
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}
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int int_to_decimal(unsigned int number, char* string_buffer) {
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for (int i=0; i<11; i++)
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string_buffer[i] = 0;
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int index = 9;
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unsigned int acc = number;
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if (acc == 0)
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string_buffer[index--] = '0';
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while (acc != 0) {
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string_buffer[index--] = 0x30+(acc%10);
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acc /= 10;
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}
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return (index+1);
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}
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char dec_to_hex[17] = "0123456789abcdef";
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int int_to_hex(unsigned int number, char* string_buffer) {
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for (int i=0; i<8; i++)
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string_buffer[i] = '0';
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string_buffer[8] = 0;
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int index = 7;
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unsigned int acc = number;
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if (acc == 0)
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string_buffer[index--] = '0';
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while (acc != 0) {
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string_buffer[index--] = dec_to_hex[acc%0x10];
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acc /= 0x10;
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}
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return (index+1);
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}
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