1 files changed, 56 insertions, 0 deletions
diff --git a/scripts/lib/render-hotspots.awk b/scripts/lib/render-hotspots.awk
new file mode 100644
index 0000000..0eb2b6d
--- /dev/null
+++ b/scripts/lib/render-hotspots.awk
@@ -0,0 +1,56 @@
+# scripts/lib/render-hotspots.awk
+# Render a per-line hotspot HTML report from sorted TSV rows.
+# Input TSV (sorted slowest-first): "<total_ms>\t<hits>\t<file>\t<line>".
+# Variables:
+#   -v TITLE="..."
+#   -v SRC=<path>   source file for the primary target, used to show line text.
+
+function esc(s) {
+  gsub(/&/, "\\&amp;", s); gsub(/</, "\\&lt;", s); gsub(/>/, "\\&gt;", s)
+  return s
+}
+
+BEGIN {
+  FS = "\t"; n = 0
+  # Load source lines for text display (best effort).
+  if (SRC != "") {
+    i = 0
+    while ((getline ln < SRC) > 0) { i++; srctext[i] = ln }
+    close(SRC)
+    srcbase = SRC; sub(/.*\//, "", srcbase); sub(/.*\\/, "", srcbase)
+  }
+}
+
+{
+  n++
+  ms[n]   = $1 + 0
+  hits[n] = $2 + 0
+  file[n] = $3
+  line[n] = $4 + 0
+  if (n == 1) maxv = $1 + 0
+}
+
+END {
+  print "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"utf-8\">"
+  print "<title>" esc(TITLE) "</title>"
+  print "<style>body{font:14px/1.5 sans-serif;margin:0;padding:1.5rem;color:#111}"
+  print "h1{font-size:18px}.meta{color:#555;margin-bottom:1rem}"
+  print "table{border-collapse:collapse;width:100%}"
+  print "th,td{padding:.3rem .5rem;text-align:left;border-bottom:1px solid #eee}"
+  print "td.num{text-align:right;font-variant-numeric:tabular-nums}"
+  print "code{font:12px/1.4 monospace;white-space:pre}"
+  print ".bar{height:.7em;background:#e8703a;border-radius:2px}"
+  print "</style></head><body>"
+  print "<h1>" esc(TITLE) "</h1>"
+  print "<div class=\"meta\">cumulative self-time per source line, slowest first</div>"
+  print "<table><thead><tr><th>#</th><th>ms</th><th>hits</th><th>file:line</th><th>source</th><th></th></tr></thead><tbody>"
+  for (i = 1; i <= n; i++) {
+    w = (maxv > 0 ? (ms[i] * 100.0 / maxv) : 0)
+    txt = ""
+    if (file[i] == srcbase && (line[i] in srctext)) txt = srctext[line[i]]
+    printf "<tr><td class=\"num\">%d</td><td class=\"num\">%.1f</td><td class=\"num\">%d</td>", i, ms[i], hits[i]
+    printf "<td>%s:%d</td><td><code>%s</code></td>", esc(file[i]), line[i], esc(txt)
+    printf "<td><div class=\"bar\" style=\"width:%.1f%%\"></div></td></tr>\n", w
+  }
+  print "</tbody></table></body></html>"
+}