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#include <stdbool.h>
#include <stdint.h>
#include <knob/heap.h>
//unsophisticated, should copy by dwords where available
void blockcpy(void *to, const void *from, uint32_t size) {
for (uint32_t i = 0; i < size; ++i)
*(uint8_t *)(to++) = *(const uint8_t *)(from++);
}
//unsophisticated, should check by dwords wheere available
__attribute__ ((__pure__))
bool blockequ(const void *a, const void *b, uint32_t size) {
for (uint32_t i = 0; i < size; ++i)
if (*(uint8_t *)(a++) != *(uint8_t *)(b++))
return false;
return true;
}
//returns length without null-terminator
uint32_t strcpy(char *to, const char *from) {
uint32_t i = 0;
do
to[i] = from[i];
while (from[i++]);
return i - 1;
}
char *strdup(const char *from) {
const char *end = from;
while (*(end++))
;
char *buf = get_block(end - from);
blockcpy(buf, from, end - from);
return buf;
}
__attribute__ ((pure))
bool strequ(const char *a, const char *b) {
while (true) {
if ((*a == '\0') != (*b == '\0'))
return false;
if (*a == '\0')
return true;
if (*a != *b)
return false;
++a;
++b;
}
}
__attribute__ ((pure))
uint32_t strlen(const char *str) {
uint32_t len = 0;
while (*str) {
++len;
++str;
}
return len;
}
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