extract-from-msg

Adhidarma Hadiwinoto
1 parent a4e4646bf4
Showing 1 changed file with 32 additions and 0 deletions Side-by-side Diff
extract-from-msg.js
@@ -0,0 +1,32 @@
+"use strict";
+
+function extractFromMessage(msg, default_pattern, default_match_idx, custom_rule) {
+    if (!msg || typeof msg !== 'string') {
+        return;
+    }
+
+    let pattern;
+    let match_idx;
+
+    if (custom_rule && custom_rule.pattern) {
+        pattern = custom_rule.pattern;
+        match_idx = custom_rule.match_idx;
+    }
+    else {
+        pattern = default_pattern;
+        match_idx = default_match_idx;
+    }
+
+    const re = new RegExp(pattern);
+    const matches = msg.match(re);
+
+    if (!matches) return;
+
+    if (match_idx < matches.length) {
+        return matches[match_idx] || null;
+    } else {
+        return;
+    }
+}
+
+module.exports = extractFromMessage;
...	...	@@ -0,0 +1,32 @@
	1	+"use strict";
	2	+
	3	+function extractFromMessage(msg, default_pattern, default_match_idx, custom_rule) {
	4	+ if (!msg \|\| typeof msg !== 'string') {
	5	+ return;
	6	+ }
	7	+
	8	+ let pattern;
	9	+ let match_idx;
	10	+
	11	+ if (custom_rule && custom_rule.pattern) {
	12	+ pattern = custom_rule.pattern;
	13	+ match_idx = custom_rule.match_idx;
	14	+ }
	15	+ else {
	16	+ pattern = default_pattern;
	17	+ match_idx = default_match_idx;
	18	+ }
	19	+
	20	+ const re = new RegExp(pattern);
	21	+ const matches = msg.match(re);
	22	+
	23	+ if (!matches) return;
	24	+
	25	+ if (match_idx < matches.length) {
	26	+ return matches[match_idx] \|\| null;
	27	+ } else {
	28	+ return;
	29	+ }
	30	+}
	31	+
	32	+module.exports = extractFromMessage;