A poorly written OS for the x86 arch. (WIP)
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eOS/lib/str.c

27 lines
526 B

#include "str.h"
unsigned int strlen(char* str) {
unsigned int len = 0;
for( char* c = str; *c != '\0'; c++ ) // search for end-of-string
len++;
return len;
}
char* strcat(char* buf, char* str) {
unsigned int bufferlen = strlen(buf);
// remove the 0x0 char from the buffer
*(buf + bufferlen) = 0x3f; // placeholder
// concat the str to buf
int cc = 0;
for( char* c = str; *c != '\0'; c++ ) {
*(buf + bufferlen + cc) = *c;
cc++;
}
*(buf + bufferlen + cc) = '\0'; // add end-of-string
return buf;
}