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#include "string.h"
#include "memory.h"
#include "utils/type.h"
size_t strLength(const char *str) {
size_t i = 0;
for (; str[i] != '\0'; ++i)
;
return i;
}
bool strEquals(const char *left, const char *right) {
size_t i = 0;
for (; left[i] != '\0' && right[i] != '\0'; ++i) {
if (left[i] != right[i]) {
return false;
}
}
return left[i] == right[i];
}
bool strnEquals(const char *left, const char *right, size_t len) {
for (size_t i = 0; i < len; ++i) {
if (left[i] != right[i]) {
return false;
}
}
return true;
}
size_t searchInStringArray(const char *array[], size_t array_size,
const char *str, size_t str_size) {
for (size_t i = 0; i < array_size; ++i) {
const size_t el_size = strLength(array[i]);
if (el_size == str_size && strnEquals(array[i], str, str_size)) {
return i;
}
}
return array_size;
}
u64 decimalToU64(char *str_begin, char *str_end, bool *success) {
u64 result = 0;
while (str_begin < str_end) {
if (*str_begin < '0' || *str_begin > '9') {
*success = false;
return 0;
}
result *= 10;
result += *str_begin - '0';
str_begin += 1;
}
*success = true;
return result;
}
f128 numberToFloat(char *str_begin, char *str_end, bool *success) {
f128 left = 0;
f128 right = 0;
bool isPastPoint = false;
while (str_begin < str_end) {
char c;
if (isPastPoint) {
c = *--str_end;
} else {
c = *str_begin++;
}
if (c >= '0' && c <= '9') {
if (isPastPoint) {
right += c - '0';
right /= 10;
} else {
left *= 10;
left += c - '0';
}
} else if (c == '.' && !isPastPoint) {
isPastPoint = true;
} else {
*success = false;
return 0;
}
}
*success = true;
return left + right;
}
char *u64ToString(u64 value) {
char *str = a404m_malloc(21 * sizeof(*str));
size_t i = 0;
do {
str[i] = (value % 10) + '0';
value /= 10;
++i;
} while (value != 0);
for (size_t j = 0; j < i / 2; ++j) {
char tmp = str[j];
str[j] = str[i - j - 1];
str[i - j - 1] = tmp;
}
str[i] = '\0';
return a404m_realloc(str, (i + 1) * sizeof(*str));
}
char *strClone(const char *str) {
const size_t str_length = strLength(str) + 1;
char *result = a404m_malloc(str_length * sizeof(*result));
for (size_t i = 0; i < str_length; ++i) {
result[i] = str[i];
}
return result;
}
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