Added str.splitlines() method (issue #733)

Author: JennaSys

transcrypt/development/automated_tests/transcrypt/module_builtin/__init__.py

@@ -4,7 +4,7 @@
 
 def canonizeString (aString):
     if __envir__.executor_name == 'transcrypt':
-        return aString.replace ('\t', '\\t') .replace ('\n', '\\n')
+        return aString.replace ('\t', '\\t').replace ('\n', '\\n').replace ('\r', '\\r')
     else:
         return aString
 
@@ -135,6 +135,23 @@ def run (autoTester):
             '<br>'
         )
 
+    lines_to_split = ['', '\n',
+                 'abc\n',
+                 'abc\ndef',
+                 'abc\rdef',
+                 'abc\r\ndef',
+                 '\nabc',
+                 '\nabc\n',
+                 'abc\ndef\r\nghi\rjkl\n',
+                 'abc\ndef\n\nghi\njkl'
+                 ]
+    autoTester.check ('<br>splitlines')
+    for line in lines_to_split:
+        autoTester.check (
+            canonizeStringList(line.splitlines ()),
+            canonizeStringList(line.splitlines (True)),
+        )
+
     autoTester.check("isalpha",
                      "".isalpha(),
                      "123".isalpha(),

transcrypt/modules/org/transcrypt/__builtin__.js

@@ -1790,6 +1790,19 @@ String.prototype.py_split = function (sep, maxsplit) {  // Combination of genera
     }
 };
 
+String.prototype.splitlines = function (keepends) {
+    if (this.length === 0) {
+        return [];
+    }
+
+    if (keepends === undefined || keepends === null || keepends === false) {
+        return this.trimEnd().split(/\r?\n|\r|\n/g);
+    }
+    else {
+        return this.split(/(?<=\n)(?=\n)|(?<=[\r\n])(?=[^\r\n])/g);
+    }
+};
+
 String.prototype.startswith = function (prefix, start=0, end) {
     if (end === undefined) {end = this.length}
     const str = this.slice(start, end)