1 files changed, 27 insertions, 9 deletions

diff --git a/src/user/lib/fwik/String.cpp b/src/user/lib/fwik/String.cpp
index 982ce4e..e3455e3 100644
--- a/src/user/lib/fwik/String.cpp
+++ b/src/user/lib/fwik/String.cpp
@@ -16,7 +16,7 @@ String::String(const String &other) {
 	}
 }
 
-String::String(char* from) {
+String::String(const char* from) {
 	len = (from == 0 ? 0 : libc::strlen(from));
 	if (len == 0) {
 		ptr = 0;
@@ -26,7 +26,7 @@ String::String(char* from) {
 	}
 }
 
-String::String(char* from, int l) {
+String::String(const char* from, int l) {
 	len = l;
 	if (len < 0) len = 0;
 	if (len == 0) {
@@ -64,7 +64,7 @@ void String::operator=(const String &other) {
 	}
 }
 
-void String::operator=(char* from) {
+void String::operator=(const char* from) {
 	if (ptr != 0) free(ptr);
 	len = (from == 0 ? 0 : libc::strlen(from));
 	if (len == 0) {
@@ -75,25 +75,25 @@ void String::operator=(char* from) {
 	}
 }
 
-char* String::c_str()  {
+const char* String::c_str() const {
 	if (ptr == 0) return "";
 	return ptr;
 }
 
-bool String::operator==(const String& other) {
+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==(char* other) {
+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) {
+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;
@@ -109,12 +109,17 @@ char &String::operator[](int pos) {
 	return crap;
 }
 
-String String::substr(int start, int count) {
+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) {
+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);
@@ -155,4 +160,17 @@ String String::hex(uint32_t 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;
+}