Add swap case and tests cases

Author: exceptionraiser

content.txt

@@ -43,3 +43,11 @@ abc中文💖
 Hello, World!
 12345!@#$%
 Test123!
+'She said, "Hello"'
+"My name's Minalike"
+"He said, 'It's a trap!'"
+'She exclaimed, \"Wow!\"'
+"'Double' and 'single' quotes"
+No quotes at all
+'It's'
+"My name's %20 Minalike!"

package.json

@@ -194,6 +194,11 @@
         "title": "Random Case",
         "category": "String Manipulation",
         "command": "string-manipulation.randomCase"
+      },
+      {
+        "title": "Swap Quotes",
+        "category": "String Manipulation",
+        "command": "string-manipulation.swapQuotes"
       }
     ],
     "submenus": [
@@ -329,6 +334,10 @@
         {
           "command": "string-manipulation.randomCase",
           "group": "7_modification"
+        },
+        {
+          "command": "string-manipulation.swapQuotes",
+          "group": "7_modification"
         }
       ]
     }

src/commands.ts

@@ -1,5 +1,6 @@
 import * as vscode from "vscode";
 import * as underscore from "underscore.string";
+import { swapQuotes } from "./commands/swap_quotes";
 const apStyleTitleCase = require("ap-style-title-case");
 const chicagoStyleTitleCase = require("chicago-capitalize");
 const slugify = require("@sindresorhus/slugify");
@@ -39,6 +40,14 @@ const randomCase = (input: string): string => {
   return result;
 };
 
+const snake = (str: string) =>
+  underscore
+    .underscored(str)
+    .replace(/([A-Z])[^A-Z]/g, " $1")
+    .replace(/[^a-z0-9]+/gi, " ")
+    .trim()
+    .replace(/\s/gi, "_");
+
 export type StringFunction = (
   str: string,
   multiselectData?: MultiSelectData
@@ -53,7 +62,7 @@ const commandNameFunctionMap: { [key: string]: CommandFunction } = {
   classify: defaultFunction("classify"),
   clean: defaultFunction("clean"),
   cleanDiacritics: defaultFunction("cleanDiacritics"),
-  underscored: defaultFunction("underscored"),
+  underscored: snake,
   dasherize: defaultFunction("dasherize"),
   humanize: defaultFunction("humanize"),
   reverse: defaultFunction("reverse"),
@@ -64,21 +73,8 @@ const commandNameFunctionMap: { [key: string]: CommandFunction } = {
     underscore.camelize(/[a-z]/.test(str) ? str : str.toLowerCase()),
   slugify: slugify,
   swapCase: defaultFunction("swapCase"),
-  snake: (str: string) =>
-    underscore
-      .underscored(str)
-      .replace(/([A-Z])[^A-Z]/g, " $1")
-      .replace(/[^a-z]+/gi, " ")
-      .trim()
-      .replace(/\s/gi, "_"),
-  screamingSnake: (str: string) =>
-    underscore
-      .underscored(str)
-      .replace(/([A-Z])[^A-Z]/g, " $1")
-      .replace(/[^a-z]+/gi, " ")
-      .trim()
-      .replace(/\s/gi, "_")
-      .toUpperCase(),
+  snake,
+  screamingSnake: (str: string) => snake(str).toUpperCase(),
   titleizeApStyle: apStyleTitleCase,
   titleizeChicagoStyle: chicagoStyleTitleCase,
   truncate: (n: number) => defaultFunction("truncate", n),
@@ -101,6 +97,7 @@ const commandNameFunctionMap: { [key: string]: CommandFunction } = {
       .map((x) => `\\u${x.charCodeAt(0).toString(16).padStart(4, "0")}`)
       .join(""),
   randomCase,
+  swapQuotes,
 };
 
 const numberFunctionNames = [