Add ripgrep rg search backend and set as default

archivebox/search/backends/ripgrep.py

@@ -0,0 +1,43 @@
+import re
+from subprocess import run, PIPE, DEVNULL
+from typing import List, Generator
+
+from archivebox.config import setup_django, ARCHIVE_DIR, ARCHIVE_DIR_NAME
+from archivebox.util import enforce_types
+
+DEFAULT_ARGUMENTS = '-ilt' # Case insensitive, matching files, types
+DEFAULT_EXTENSIONS = 'html'
+REGEX_ARGUMENT = '-e'
+
+TIMESTAMP_REGEX = r'\/([\d]+\.[\d]+)\/'
+
+ts_regex =  re.compile(TIMESTAMP_REGEX)
+
+@enforce_types
+def index(snapshot_id: str, texts: List[str]):
+    return
+
+@enforce_types
+def flush(snapshot_ids: Generator[str, None, None]):
+    return
+
+@enforce_types
+def search(text: str) -> List[str]:
+    is_rg_installed = run(['which', 'rg'], stdout=DEVNULL, stderr=DEVNULL)
+    if is_rg_installed.returncode:
+        raise Exception("rg binary not found, install ripgrep to use this backend")
+
+    setup_django(check_db=True)
+    from core.models import Snapshot
+
+    rg = run(['rg',DEFAULT_ARGUMENTS, DEFAULT_EXTENSIONS, REGEX_ARGUMENT, text, str(ARCHIVE_DIR)],stdout=PIPE, stderr=PIPE, timeout=60)
+    file_paths = [p.decode().replace(str(ARCHIVE_DIR_NAME), '') for p in rg.stdout.splitlines()]
+    timestamps = set()
+    for path in file_paths:
+        if ts := ts_regex.findall(path):
+            timestamps.add(ts[0])
+    
+    snap_ids = [str(id) for id in Snapshot.objects.filter(timestamp__in=timestamps).values_list('pk', flat=True)]
+
+    return snap_ids
+