72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/*
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* string.h
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* Common string and memory utility functions for MontaukOS programs
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* Copyright (c) 2025-2026 Daniel Hammer
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*/
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#pragma once
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#include <cstdint>
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namespace montauk {
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inline int slen(const char* s) {
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int n = 0;
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while (s[n]) n++;
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return n;
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}
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inline bool streq(const char* a, const char* b) {
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while (*a && *b) {
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if (*a != *b) return false;
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a++; b++;
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}
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return *a == *b;
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}
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inline bool starts_with(const char* str, const char* prefix) {
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while (*prefix) {
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if (*str != *prefix) return false;
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str++; prefix++;
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}
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return true;
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}
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inline const char* skip_spaces(const char* s) {
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while (*s == ' ') s++;
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return s;
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}
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inline void memcpy(void* dst, const void* src, uint64_t n) {
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auto* d = (uint8_t*)dst;
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auto* s = (const uint8_t*)src;
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for (uint64_t i = 0; i < n; i++) d[i] = s[i];
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}
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inline void memmove(void* dst, const void* src, uint64_t n) {
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auto* d = (uint8_t*)dst;
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auto* s = (const uint8_t*)src;
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if (d < s) {
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for (uint64_t i = 0; i < n; i++) d[i] = s[i];
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} else {
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for (uint64_t i = n; i > 0; i--) d[i-1] = s[i-1];
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}
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}
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inline void memset(void* dst, int val, uint64_t n) {
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auto* d = (uint8_t*)dst;
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for (uint64_t i = 0; i < n; i++) d[i] = (uint8_t)val;
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}
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inline void strcpy(char* dst, const char* src) {
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while (*src) *dst++ = *src++;
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*dst = '\0';
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}
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inline void strncpy(char* dst, const char* src, int max) {
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int i = 0;
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while (src[i] && i < max - 1) { dst[i] = src[i]; i++; }
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dst[i] = '\0';
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}
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}
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