feat: allow buffer as input (#31)

* feature: allow buffer as input

* Test case for buffer

* Removed tab

* Quotes

* I'm newb

* Woops

src/ReplayParser.ts

@@ -40,11 +40,11 @@ class ReplayParser extends EventEmitter {
         this.decompressed = Buffer.from('')
     }
 
-    parse ($buffer: string) {
+    parse ($buffer: string | Buffer) {
         this.msElapsed = 0
-        this.buffer = readFileSync($buffer)
+        this.buffer = Buffer.isBuffer($buffer) ? $buffer : readFileSync($buffer)
         this.buffer = this.buffer.slice(this.buffer.indexOf('Warcraft III recorded game'))
-        this.filename = $buffer
+        this.filename = Buffer.isBuffer($buffer) ? 'buffer' : $buffer
         const decompressed: Buffer[] = []
 
         this._parseHeader()

src/W3GReplay.ts

@@ -64,7 +64,7 @@ class W3GReplay extends ReplayParser {
     }
 
     // gamedatablock timeslotblock commandblock actionblock
-    parse ($buffer: string): ParserOutput {
+    parse ($buffer: string | Buffer): ParserOutput {
         this.parseStartTime = performance.now()
         this.buffer = Buffer.from('')
         this.filename = ''

test/replays.test.ts

@@ -1,5 +1,6 @@
 import W3GReplay from '../src/W3GReplay'
 import { Validator } from 'jsonschema'
+import { readFileSync } from 'fs'
 
 const Parser = new W3GReplay()
 
@@ -181,6 +182,13 @@ describe('Replay parsing tests', () => {
         expect(test.players.length).toBe(2)
     })
 
+    it('parses a standard 1.30.4 replay properly as buffer', () => {
+        const buffer: Buffer = readFileSync('./replays/standard_1304.w3g')
+        const test = Parser.parse(buffer)
+        expect(test.version).toBe('1.30.2+')
+        expect(test.players.length).toBe(2)
+    })
+
     it('parses a standard 1.30.4 2on2 replay properly', () => {
         const test = Parser.parse('./replays/standard_1304.2on2.w3g')
         expect(test.version).toBe('1.30.2+')