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# 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(/&/, "\\&", s); gsub(/</, "\\<", s); gsub(/>/, "\\>", 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>"
}
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