Adds diff info to the active line hover for uncommitted changes

src/git/parsers/diffParser.ts

@@ -0,0 +1,45 @@
+'use strict';
+import { IGitDiff, IGitDiffChunk } from './../git';
+
+const unifiedDiffRegex = /^@@ -([\d]+),([\d]+) [+]([\d]+),([\d]+) @@([\s\S]*?)(?=^@@)/gm;
+
+export class GitDiffParser {
+
+    static parse(data: string, debug: boolean = false): IGitDiff | undefined {
+        if (!data) return undefined;
+
+        const chunks: IGitDiffChunk[] = [];
+
+        let match: RegExpExecArray | null = null;
+        do {
+            match = unifiedDiffRegex.exec(`${data}\n@@`);
+            if (match == null) break;
+
+            const originalStart = +match[1];
+            const changedStart = +match[3];
+
+            const chunk = match[5];
+            const lines = chunk.split('\n').slice(1);
+            const original = lines.filter(l => l[0] !== '+').map(l => (l[0] === '-') ? l.substring(1) : undefined);
+            const changed = lines.filter(l => l[0] !== '-').map(l => (l[0] === '+') ? l.substring(1) : undefined);
+
+            chunks.push({
+                chunk: debug ? chunk : undefined,
+                original: original,
+                originalStart: originalStart,
+                originalEnd: originalStart + +match[2],
+                changes: changed,
+                changesStart: changedStart,
+                changesEnd: changedStart + +match[4]
+            });
+        } while (match != null);
+
+        if (!chunks.length) return undefined;
+
+        const diff = {
+            diff: debug ? data : undefined,
+            chunks: chunks
+        } as IGitDiff;
+        return diff;
+    }
+}