COMMON: Add erase method to String class

1 files changed, 19 insertions, 0 deletions

diff --git a/common/str.cpp b/common/str.cpp
index 5d647ee4f0..4a10792373 100644
--- a/common/str.cpp
+++ b/common/str.cpp
@@ -361,6 +361,25 @@ void String::deleteChar(uint32 p) {
 	_size--;
 }
 
+void String::erase(uint32 p, uint32 len) {
+	assert(p < _size);
+
+	makeUnique();
+	// If len == npos or p + len is over the end, remove all the way to the end
+	if (len == npos || p + len >= _size) {
+		// Delete char at p as well. So _size = (p - 1) + 1
+		_size = p;
+		// Null terminate
+		_str[_size] = 0;
+		return;
+	}
+
+	for ( ; p + len <= _size; p++) {
+		_str[p] = _str[p + len];
+	}
+	_size -= len;
+}
+
 void String::clear() {
 	decRefCount(_extern._refCount);