Kjell Tore Guttormsen
c8146c143d
Adds the runnable counterpart to examples/01-add-verbose-flag (which is artifacts-only). The fixture is the measurement target for Spor B's end-to-end pipeline run (B3) and Spor C's cache-prefix experiment. Baseline: - tally.mjs (80 lines, hand-rolled argv parser, zero deps) - 3 flags: --json, -i/--ignore-case, --lines + --help - Exit codes: 0 success, 1 file error, 2 invalid argv - 10 node:test cases, all green (~2.2s wall-clock) - Deterministic fixtures: sample.txt (foo×7, Foo×1, regex fo+×9) + poem.txt (--lines vs total distinction) - REGENERATED.md skeleton (B3 fills the pipeline walk-through) Brief preconditions verified: - grep -c 'foo' sample.txt = 4 (>= 1) - regex /fo+/g count = 9 (> grep count) - Brief assumptions for B3 SC #1, #3 hold This is the first runnable example in plugins/ultraplan-local/examples/. Next: B3 runs /ultraresearch-local + /ultraplan-local + /ultraexecute-local against the brief to add --regex/-r, then verifies all 10 Success Criteria.
80 lines
2.5 KiB
JavaScript
Executable file
80 lines
2.5 KiB
JavaScript
Executable file
#!/usr/bin/env node
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import { readFileSync } from 'node:fs';
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const HELP = `Usage: tally [options] <pattern> <file>
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Count literal-substring occurrences of <pattern> in <file>.
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Options:
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-i, --ignore-case Case-insensitive matching
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--lines Count lines containing pattern (not total occurrences)
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--json Emit a JSON object on stdout
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-h, --help Show this help and exit
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Exit codes: 0=success 1=file error 2=invalid argv
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`;
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function fail(msg, code = 2) {
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process.stderr.write(`tally: ${msg}\n`);
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process.exit(code);
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}
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function parseArgs(argv) {
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const positional = [];
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const flags = { json: false, ignoreCase: false, lines: false };
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for (const a of argv) {
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if (a === '--json') flags.json = true;
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else if (a === '-i' || a === '--ignore-case') flags.ignoreCase = true;
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else if (a === '--lines') flags.lines = true;
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else if (a === '-h' || a === '--help') { process.stdout.write(HELP); process.exit(0); }
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else if (a.startsWith('-')) fail(`unknown flag: ${a}`);
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else positional.push(a);
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}
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if (positional.length !== 2) fail('expected <pattern> <file>');
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return { pattern: positional[0], file: positional[1], flags };
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}
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function countOccurrences(text, pattern, ignoreCase) {
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if (pattern.length === 0) return 0;
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const haystack = ignoreCase ? text.toLowerCase() : text;
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const needle = ignoreCase ? pattern.toLowerCase() : pattern;
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let count = 0, idx = 0;
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while ((idx = haystack.indexOf(needle, idx)) !== -1) { count++; idx += needle.length; }
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return count;
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}
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function countLines(text, pattern, ignoreCase) {
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if (pattern.length === 0) return 0;
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const needle = ignoreCase ? pattern.toLowerCase() : pattern;
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let count = 0;
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for (const line of text.split('\n')) {
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const haystack = ignoreCase ? line.toLowerCase() : line;
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if (haystack.includes(needle)) count++;
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}
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return count;
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}
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function main() {
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const { pattern, file, flags } = parseArgs(process.argv.slice(2));
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let text;
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try {
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text = readFileSync(file, 'utf8');
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} catch (err) {
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const what = err.code === 'ENOENT' ? 'file not found' : 'read error';
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process.stderr.write(`tally: ${what}: ${file}\n`);
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process.exit(1);
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}
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const count = flags.lines
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? countLines(text, pattern, flags.ignoreCase)
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: countOccurrences(text, pattern, flags.ignoreCase);
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if (flags.json) {
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process.stdout.write(JSON.stringify({
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pattern, file, count,
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flags: { json: flags.json, ignoreCase: flags.ignoreCase, lines: flags.lines },
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}) + '\n');
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} else {
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process.stdout.write(count + '\n');
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}
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}
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main();
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