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#include <knob/panic.h>
#include <knob/heap.h>
#include <stdbool.h>
#include <stdint.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);
if (!buf)
PANIC("get_block returned 0 in strdup");
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;
}
void str_trunc_fill(char *str, uint32_t len) {
const uint8_t orig_len = strlen(str);
if (orig_len > len) {
str[len - 4] = ' ';
str[len - 3] = '.';
str[len - 2] = '.';
str[len - 1] = '.';
str[len] = '\0';
}
else if (orig_len != len) {
for (uint8_t j = orig_len; j < len; ++j)
str[j] = ' ';
str[len] = '\0';
}
}
__attribute__ ((pure))
uint32_t str_find_any(const char *str, const char *delims) {
const char *i;
for (i = str; *i; ++i)
for (const char *j = delims; *j; ++j)
if (*i == *j)
return i - str;
return i - str;
}
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