Adds most of the toolsHEADmaster

1 files changed, 38 insertions, 0 deletions

diff --git a/v_windows/v/vlib/strings/strings.c.v b/v_windows/v/vlib/strings/strings.c.v
new file mode 100644
index 0000000..c020f5b
--- /dev/null
+++ b/v_windows/v/vlib/strings/strings.c.v
@@ -0,0 +1,38 @@
+module strings
+
+// strings.repeat - fill a string with `n` repetitions of the character `c`
+pub fn repeat(c byte, n int) string {
+	if n <= 0 {
+		return ''
+	}
+	mut bytes := unsafe { malloc_noscan(n + 1) }
+	unsafe {
+		C.memset(bytes, c, n)
+		bytes[n] = `0`
+	}
+	return unsafe { bytes.vstring_with_len(n) }
+}
+
+// strings.repeat_string - gives you `n` repetitions of the substring `s`
+// NB: strings.repeat, that repeats a single byte, is between 2x
+// and 24x faster than strings.repeat_string called for a 1 char string.
+pub fn repeat_string(s string, n int) string {
+	if n <= 0 || s.len == 0 {
+		return ''
+	}
+	slen := s.len
+	blen := slen * n
+	mut bytes := unsafe { malloc_noscan(blen + 1) }
+	for bi in 0 .. n {
+		bislen := bi * slen
+		for si in 0 .. slen {
+			unsafe {
+				bytes[bislen + si] = s[si]
+			}
+		}
+	}
+	unsafe {
+		bytes[blen] = `0`
+	}
+	return unsafe { bytes.vstring_with_len(blen) }
+}