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#include <String.h>
#include <string.h>
String::String() {
ptr = 0;
len = 0;
}
String::String(const String &other) {
len = other.len;
if (len == 0) {
ptr = 0;
} else {
ptr = (char*)malloc(len + 1);
libc::memcpy(ptr, other.ptr, len + 1);
}
}
String::String(const char* from) {
len = (from == 0 ? 0 : libc::strlen(from));
if (len == 0) {
ptr = 0;
} else {
ptr = (char*)malloc(len + 1);
libc::memcpy(ptr, from, len + 1);
}
}
String::String(const char* from, int l) {
len = l;
if (len < 0) len = 0;
if (len == 0) {
ptr = 0;
} else {
ptr = (char*)malloc(len + 1);
libc::memcpy(ptr, from, len);
ptr[len] = 0;
}
}
String::String(char c, int count) {
len = count;
if (len == 0) {
ptr = 0;
} else {
ptr = (char*)malloc(len + 1);
libc::memset(ptr, c, len);
ptr[len] = 0;
}
}
String::~String() {
if (ptr != 0) free(ptr);
}
void String::operator=(const String &other) {
if (ptr != 0) free(ptr);
len = other.len;
if (len == 0) {
ptr = 0;
} else {
ptr = (char*)malloc(len + 1);
libc::memcpy(ptr, other.ptr, len + 1);
}
}
void String::operator=(const char* from) {
if (ptr != 0) free(ptr);
len = (from == 0 ? 0 : libc::strlen(from));
if (len == 0) {
ptr = 0;
} else {
ptr = (char*)malloc(len + 1);
libc::memcpy(ptr, from, len + 1);
}
}
const char* String::c_str() const {
if (ptr == 0) return "";
return ptr;
}
bool String::operator==(const String& other) const {
if (len != other.len) return false;
for (int i = 0; i < len; i++) if (ptr[i] != other.ptr[i]) return false;
return true;
}
bool String::operator==(const char* other) const {
if (other == 0) return (len == 0);
if (len != libc::strlen(other)) return false;
for (int i = 0; i < len; i++) if (ptr[i] != other[i]) return false;
return true;
}
bool String::operator<(const String& other) const {
for (int i = 0; i < len && i < other.len; i++) {
if (ptr[i] > other.ptr[i]) return false;
if (ptr[i] < other.ptr[i]) return true;
}
if (len < other.len) return true;
return false;
}
static char crap;
char &String::operator[](int pos) {
if (pos >= 0 && pos < len) return ptr[pos];
crap = 0;
return crap;
}
char String::operator[](int pos) const {
if (pos >= 0 && pos < len) return ptr[pos];
return 0;
}
String String::substr(int start, int count) const {
if (start + count > len) count = len - start;
return String(ptr + start, count);
}
String String::operator+(const String& other) const {
String ret(' ', len + other.len);
libc::memcpy(ret.ptr, ptr, len);
libc::memcpy(ret.ptr + len, other.ptr, other.len);
return ret;
}
void String::operator+=(const String& other) {
if (other.len == 0) return;
int newlen = len + other.len;
char* newptr = (char*)malloc(newlen + 1);
libc::memcpy(newptr, ptr, len);
libc::memcpy(newptr+len, other.ptr, other.len);
newptr[newlen] = 0;
free(ptr);
ptr = newptr;
len = newlen;
}
void String::operator+=(char c) {
char* newptr = (char*)malloc(len + 2);
libc::memcpy(newptr, ptr, len);
newptr[len] = c;
len++;
newptr[len] = 0;
free(ptr);
ptr = newptr;
}
String String::dec(int i) {
char b[16];
const char *e = libc::format_int(b, i);
return String(b, e - b);
}
String String::hex(uint32_t v) {
char b[16];
const char *e = libc::format_hex(b, v);
return String(b, e - b);
}
String String::sprintf(const char* format, ...) {
va_list ap;
va_start(ap, format);
va_list ap2;
va_copy(ap2, ap);
String ret;
ret.len = libc::printf_str_len(format, ap2);
va_end(ap2);
ret.ptr = (char*)malloc(ret.len + 1);
ret.len = libc::vsprintf(ret.ptr, format, ap);
va_end(ap);
return ret;
}
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