Review changes

scripts/svg_utils.py

@@ -0,0 +1,53 @@
+import xml.etree.ElementTree as ET
+
+
+def parse_svg_intrinsic_size(svg_data):
+    try:
+        root = ET.fromstring(svg_data)
+    except ET.ParseError:
+        return None, None
+
+    viewbox = root.get("viewBox") or root.get("viewbox")
+    if viewbox:
+        parts = viewbox.replace(",", " ").split()
+        if len(parts) == 4:
+            try:
+                vb_w = float(parts[2])
+                vb_h = float(parts[3])
+                if vb_w > 0 and vb_h > 0:
+                    return vb_w, vb_h
+            except ValueError:
+                pass
+
+    def parse_len(value):
+        if not value:
+            return None
+        cleaned = "".join(ch for ch in value if ch.isdigit() or ch in ".-")
+        if not cleaned:
+            return None
+        try:
+            parsed = float(cleaned)
+            return parsed if parsed > 0 else None
+        except ValueError:
+            return None
+
+    w = parse_len(root.get("width"))
+    h = parse_len(root.get("height"))
+    return w, h
+
+
+def fit_inside_canvas(src_w, src_h, dst_w, dst_h):
+    if src_w <= 0 or src_h <= 0 or dst_w <= 0 or dst_h <= 0:
+        return dst_w, dst_h
+
+    src_ratio = src_w / src_h
+    dst_ratio = dst_w / dst_h
+
+    if src_ratio >= dst_ratio:
+        fit_w = dst_w
+        fit_h = max(1, round(fit_w / src_ratio))
+    else:
+        fit_h = dst_h
+        fit_w = max(1, round(fit_h * src_ratio))
+
+    return fit_w, fit_h