X-Git-Url: https://git.jsancho.org/?p=datasette-pytables.git;a=blobdiff_plain;f=datasette_pytables%2Futils.py;fp=datasette_pytables%2Futils.py;h=b4bd2a0d35973f164d29ee449683fccc619c5609;hp=0000000000000000000000000000000000000000;hb=d46bbde71b66e3c6c76e41cd303a5d5ea23db0c4;hpb=bebf2dd8e68c9d857ba22e2eaf6977b6ca1a8a57

diff --git a/datasette_pytables/utils.py b/datasette_pytables/utils.py
new file mode 100644
index 0000000..b4bd2a0
--- /dev/null
+++ b/datasette_pytables/utils.py
@@ -0,0 +1,28 @@
+from moz_sql_parser import parse
+import re
+
+
+def parse_sql(sql, params):
+    # Table name
+    sql = re.sub(r'(?i)from \[(.*)]', r'from "\g<1>"', sql)
+    # Params
+    for param in params:
+        sql = sql.replace(":" + param, param)
+
+    try:
+        parsed = parse(sql)
+    except:
+        # Propably it's a PyTables expression
+        for token in ['group by', 'order by', 'limit', '']:
+            res = re.search('(?i)where (.*)' + token, sql)
+            if res:
+                modified_sql = re.sub('(?i)where (.*)(' + token + ')', r'\g<2>', sql)
+                parsed = parse(modified_sql)
+                parsed['where'] = res.group(1).strip()
+                break
+
+    # Always a list of fields
+    if type(parsed['select']) is not list:
+        parsed['select'] = [parsed['select']]
+
+    return parsed