From cc1f1c0562a4d3b160154b383b7a27df1d17493f Mon Sep 17 00:00:00 2001
From: Alexander Rose <alex.rose@rcsb.org>
Date: Mon, 6 May 2019 13:36:59 -0700
Subject: [PATCH] added trimChar methods
---
src/mol-util/string.ts | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/src/mol-util/string.ts b/src/mol-util/string.ts
index 62ebf10cf..dfc8f03bb 100644
--- a/src/mol-util/string.ts
+++ b/src/mol-util/string.ts
@@ -52,4 +52,25 @@ export function interpolate(str: string, params: { [k: string]: any }) {
const names = Object.keys(params);
const values = Object.values(params);
return new Function(...names, `return \`${str}\`;`)(...values);
+}
+
+export function trimChar(str: string, char: string) {
+ let start = 0;
+ let end = str.length;
+ while (start < end && str[start] === char) ++start;
+ while (end > start && str[end - 1] === char) --end;
+ return (start > 0 || end < str.length) ? str.substring(start, end) : str;
+}
+
+export function trimCharStart(str: string, char: string) {
+ let start = 0;
+ const end = str.length;
+ while (start < end && str[start] === char) ++start;
+ return (start > 0) ? str.substring(start, end) : str;
+}
+
+export function trimCharEnd(str: string, char: string) {
+ let end = str.length;
+ while (end > 0 && str[end - 1] === char) --end;
+ return (end < str.length) ? str.substring(0, end) : str;
}
\ No newline at end of file
--
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