From 547e5824e995c65d016c4aa5f562ffb36a9f154c Mon Sep 17 00:00:00 2001
From: Peter McGoron <code@mcgoron.com>
Date: Tue, 10 Aug 2021 10:06:31 -0400
Subject: [PATCH] generate database from command line arguments

---
 elements.ml | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/elements.ml b/elements.ml
index ad99740..a2877fb 100644
--- a/elements.ml
+++ b/elements.ml
@@ -4,7 +4,7 @@ module Opts = struct
 	type lasttype = NAME | SYMB
 
 	let ltype = ref NAME
-	let gendb = ref ""
+	let jsonf = ref ""
 	let maxmatch = ref 3
 	let match_name : string list ref = ref []
 	let match_symb : string list ref = ref []
@@ -25,10 +25,15 @@ module Opts = struct
 		elements [-maxmatch n] [-dbfile search] [-name ...] [-symb ...]\n\
 	"
 
+	let setfile name v f =
+		if f = "" then raise
+			(Bad (Printf.sprintf "%s requires a filename" name))
+		else v := f
+
 	let spec = [
-	"-gendb", Set_string gendb, "Generate DB file";
+	"-gendb", String (setfile "-gendb" jsonf), "Generate DB file";
 	"-maxmatch", Set_int maxmatch, "Limit the amount of matches (def. 3)";
-	"-dbfile", Set_string dbfile, "Set the DB filename";
+	"-dbfile", String (setfile "-dbfile" dbfile), "Set the DB filename";
 	"-name", String add_name, "Search by name (default)";
 	"-symb", String add_symb, "Search by symbol"
 	]
@@ -37,3 +42,11 @@ module Opts = struct
 end
 
 let () = Opts.exec()
+
+let db = Sqlite3.db_open !Opts.dbfile
+if !Opts.jsonf <> "" then
+	Makedb.makedb db (if !Opts.jsonf = "-" then
+			Yojson.Basic.from_channel stdin
+		 else
+			Yojson.Basic.from_file !Opts.jsonf
+	)