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Diffstat (limited to 'scripts/lib/coverage-report.awk')
| -rw-r--r-- | scripts/lib/coverage-report.awk | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/scripts/lib/coverage-report.awk b/scripts/lib/coverage-report.awk new file mode 100644 index 0000000..982eb45 --- /dev/null +++ b/scripts/lib/coverage-report.awk @@ -0,0 +1,84 @@ +# scripts/lib/coverage-report.awk +# Produce line-coverage reports for shell sources from an executed-line set. +# +# Inputs: +# -v COVERED=<file> TSV of "<base>\t<line>" executed lines (sorted -u). +# -v HTMLDIR=<dir> directory to write per-file <base>.html reports into. +# ARGV the source files to report on (absolute paths). +# +# Output (stdout): one CSV row per source file: +# file,total_executable,covered,percent +# +# "Executable" lines are determined heuristically: non-blank, non-comment +# lines that are not pure structural tokens (then/do/done/else/fi/esac/{/}). +# Heredoc/multiline string bodies are approximated and may read as missed; +# see docs/coverage.md for the documented limitations. + +function trim(s) { sub(/^[ \t]+/, "", s); sub(/[ \t]+$/, "", s); return s } + +function is_exec(line, t) { + t = trim(line) + if (t == "") return 0 + if (t ~ /^#/) return 0 + if (t ~ /^(then|do|done|else|fi|esac)([ \t].*)?$/) return 0 + if (t ~ /^[{}]([ \t;].*)?$/) return 0 + if (t ~ /^[()]([ \t].*)?$/) return 0 + if (t ~ /^;;/) return 0 + return 1 +} + +function esc(s) { + gsub(/&/, "\\&", s) + gsub(/</, "\\<", s) + gsub(/>/, "\\>", s) + return s +} + +function basename(p) { sub(/.*\//, "", p); sub(/.*\\/, "", p); return p } + +BEGIN { + FS = "\t" + # Load the executed-line set. + while ((getline ln < COVERED) > 0) { + nf = split(ln, a, "\t") + if (nf >= 2) covered[a[1] SUBSEP a[2]] = 1 + } + close(COVERED) +} + +# New source file: open its HTML report and reset counters. +FNR == 1 { + if (cur != "") finish_file() + cur = FILENAME + curbase = basename(FILENAME) + total = 0; hit = 0 + html = HTMLDIR "/" curbase ".html" + print "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"utf-8\">" > html + print "<title>coverage: " esc(curbase) "</title>" > html + print "<style>body{font:13px/1.5 monospace;margin:0;padding:1rem;background:#fff;color:#111}" > html + print "h1{font:600 16px sans-serif}" > html + print "table{border-collapse:collapse;width:100%}" > html + print "td{padding:0 .5rem;white-space:pre;vertical-align:top}" > html + print "td.n{color:#999;text-align:right;user-select:none;border-right:1px solid #ddd}" > html + print ".hit{background:#e6ffed}.miss{background:#ffeef0}.na{color:#999}" > html + print "</style></head><body>" > html + print "<h1>coverage: " esc(curbase) "</h1><table>" > html +} + +{ + cls = "na" + if (is_exec($0)) { + total++ + if ((curbase SUBSEP FNR) in covered) { hit++; cls = "hit" } else { cls = "miss" } + } + print "<tr class=\"" cls "\"><td class=\"n\">" FNR "</td><td>" esc($0) "</td></tr>" > html +} + +function finish_file( pct) { + print "</table></body></html>" > html + close(html) + pct = (total > 0 ? (hit * 100.0 / total) : 0) + printf "%s,%d,%d,%.1f\n", curbase, total, hit, pct +} + +END { if (cur != "") finish_file() } |