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105 lines
4.0 KiB
JavaScript
105 lines
4.0 KiB
JavaScript
// Port of auto_detect_filter (rtk/src/cmds/system/pipe_cmd.rs:132-188) + JS extras
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// Order: git-diff → git-status → grep → find → tree → ls → search-list
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// → read-numbered → dedup-log → smart-truncate → null
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import { DETECT_WINDOW, READ_NUMBERED_MIN_HIT_RATIO, SMART_TRUNCATE_MIN_LINES } from "./constants.js";
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import { gitDiff } from "./filters/gitDiff.js";
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import { gitStatus } from "./filters/gitStatus.js";
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import { grep } from "./filters/grep.js";
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import { find } from "./filters/find.js";
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import { dedupLog } from "./filters/dedupLog.js";
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import { ls } from "./filters/ls.js";
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import { tree } from "./filters/tree.js";
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import { smartTruncate } from "./filters/smartTruncate.js";
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import { readNumbered, READ_NUMBERED_LINE_RE } from "./filters/readNumbered.js";
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import { searchList, SEARCH_LIST_HEADER_RE } from "./filters/searchList.js";
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const RE_GIT_DIFF = /^diff --git /m;
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const RE_GIT_DIFF_HUNK = /^@@ /m;
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const RE_GIT_STATUS = /^On branch |^nothing to commit|^Changes (not |to be )|^Untracked files:/m;
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const RE_PORCELAIN = /^[ MADRCU?!][ MADRCU?!] \S/m;
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const RE_TREE_GLYPH = /[├└]──|│ /;
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const RE_LS_ROW = /^[-dlbcps][rwx-]{9}/m;
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const RE_LS_TOTAL = /^total \d+$/m;
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export function autoDetectFilter(text) {
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// Rust: floor_char_boundary to avoid UTF-8 split — JS .slice() by char is safe
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const head = text.length > DETECT_WINDOW ? text.slice(0, DETECT_WINDOW) : text;
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if (RE_GIT_DIFF.test(head) || RE_GIT_DIFF_HUNK.test(head)) return gitDiff;
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if (RE_GIT_STATUS.test(head) || isMostlyPorcelain(head)) return gitStatus;
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const lines = head.split("\n");
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const nonEmpty = lines.filter(l => l.trim().length > 0);
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// Rust grep rule: first 5 non-empty lines, ANY matches "file:number:content"
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const first5 = nonEmpty.slice(0, 5);
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if (first5.some(isGrepLine)) return grep;
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// Rust find rule: ALL non-empty lines path-like (no ':'), >=3 lines
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if (nonEmpty.length >= 3 && nonEmpty.every(isPathLike)) return find;
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// Tree: contains box-drawing glyphs typical of `tree` command
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if (RE_TREE_GLYPH.test(head)) return tree;
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// ls -la: has "total N" header or >=3 rows starting with perms string
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if (RE_LS_TOTAL.test(head) || countMatches(head, RE_LS_ROW) >= 3) return ls;
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// Cursor Glob search list header
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if (SEARCH_LIST_HEADER_RE.test(head)) return searchList;
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// Line-numbered file dump (" N|content") — fire only if many lines match
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if (lines.length >= SMART_TRUNCATE_MIN_LINES && isLineNumbered(lines)) {
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return readNumbered;
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}
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// Fallback: dedupLog for generic multi-line noise with duplicates
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if (nonEmpty.length >= 5) return dedupLog;
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// Last resort: big blob with no structure — smart truncate
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if (text.split("\n").length >= SMART_TRUNCATE_MIN_LINES) return smartTruncate;
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return null;
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}
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function isGrepLine(line) {
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// Rust: splitn(3, ':') → parts.len()==3 && parts[1].parse::<usize>().is_ok()
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const first = line.indexOf(":");
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if (first === -1) return false;
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const second = line.indexOf(":", first + 1);
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if (second === -1) return false;
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const lineno = line.slice(first + 1, second);
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return /^\d+$/.test(lineno);
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}
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function isPathLike(line) {
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const t = line.trim();
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if (t.length === 0) return false;
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if (t.includes(":")) return false;
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return t.startsWith(".") || t.startsWith("/") || t.includes("/");
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}
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function isMostlyPorcelain(head) {
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const lines = head.split("\n").filter(l => l.trim());
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if (lines.length < 3) return false;
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const hits = lines.filter(l => RE_PORCELAIN.test(l)).length;
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return hits / lines.length >= 0.6;
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}
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function isLineNumbered(lines) {
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let hits = 0;
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let nonEmpty = 0;
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const sample = lines.slice(0, 100);
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for (const l of sample) {
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if (l.length === 0) continue;
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nonEmpty++;
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if (READ_NUMBERED_LINE_RE.test(l)) hits++;
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}
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if (nonEmpty < 5) return false;
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return hits / nonEmpty >= READ_NUMBERED_MIN_HIT_RATIO;
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}
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function countMatches(text, re) {
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const g = new RegExp(re.source, re.flags.includes("g") ? re.flags : re.flags + "g");
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return (text.match(g) || []).length;
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}
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