1 files changed, 59 insertions, 0 deletions
diff --git a/system/libraries/string/location.zig b/system/libraries/string/location.zig
new file mode 100644
index 0000000..ff1c915
--- /dev/null
+++ b/system/libraries/string/location.zig
@@ -0,0 +1,59 @@
+//! Location utilities
+
+pub fn getStackName(location: []const u8) []const u8 {
+    if (location.len == 0 or (location.len == 1 and location[0] == '/')) {
+        return "/";
+    }
+
+    var last_slash: usize = 0;
+    for (location, 0..) |c, i| {
+        if (c == '/') {
+            last_slash = i;
+        }
+    }
+
+    if (last_slash == location.len - 1 and location.len > 1) {
+        var i: usize = location.len - 2;
+        while (i > 0) : (i -= 1) {
+            if (location[i] == '/') {
+                return location[i + 1 .. location.len - 1];
+            }
+        }
+        return location[1 .. location.len - 1];
+    }
+
+    if (last_slash + 1 < location.len) {
+        return location[last_slash + 1 ..];
+    }
+
+    return location;
+}
+
+pub fn parent(location: []const u8, buf: []u8) []const u8 {
+    if (location.len <= 1) {
+        buf[0] = '/';
+        return buf[0..1];
+    }
+
+    var end = location.len;
+    if (location[end - 1] == '/') {
+        end -= 1;
+    }
+
+    var i: usize = end;
+    while (i > 0) : (i -= 1) {
+        if (location[i - 1] == '/') {
+            if (i == 1) {
+                buf[0] = '/';
+                return buf[0..1];
+            }
+            for (location[0 .. i - 1], 0..) |c, j| {
+                buf[j] = c;
+            }
+            return buf[0 .. i - 1];
+        }
+    }
+
+    buf[0] = '/';
+    return buf[0..1];
+}