源码快照 @ 2026-09-01 (source-only, 剔除非源码素材)

packages/agent/gui/shared/agentConversation/rules/agentUnifiedDiffValidation.ts

@@ -0,0 +1,135 @@
+import { normalizeAgentPatchText } from "./agentPatchMetadata";
+
+const UNIFIED_DIFF_HUNK_PATTERN =
+  /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@(?:.*)$/;
+
+export function isAgentUnifiedDiffText(value: string): boolean {
+  const normalized = normalizeAgentPatchText(value).replace(/\r/g, "\n").trim();
+  if (!normalized) {
+    return false;
+  }
+
+  const lines = normalized.split("\n");
+  const isApplyPatch =
+    normalized.includes("*** Begin Patch") &&
+    (normalized.includes("*** Add File:") ||
+      normalized.includes("*** Delete File:") ||
+      normalized.includes("*** Update File:"));
+  let hasHunk = false;
+  let hunkActive = false;
+  let hunkHasCounts = false;
+  let hunkHasChange = false;
+  let oldCount = 0;
+  let newCount = 0;
+  let expectedOld = 0;
+  let expectedNew = 0;
+
+  const finishHunk = (): boolean => {
+    if (!hunkActive) {
+      return true;
+    }
+    if (!hunkHasCounts) {
+      return isApplyPatch && hunkHasChange;
+    }
+    return (
+      oldCount === expectedOld && newCount === expectedNew && hunkHasChange
+    );
+  };
+
+  for (const line of lines) {
+    const hunkMatch = line.match(UNIFIED_DIFF_HUNK_PATTERN);
+    if (hunkMatch) {
+      if (!finishHunk()) {
+        return false;
+      }
+      hasHunk = true;
+      hunkActive = true;
+      hunkHasCounts = true;
+      hunkHasChange = false;
+      oldCount = 0;
+      newCount = 0;
+      expectedOld = hunkCount(hunkMatch[2]);
+      expectedNew = hunkCount(hunkMatch[4]);
+      continue;
+    }
+
+    if (line === "@@" && isApplyPatch) {
+      if (!finishHunk()) {
+        return false;
+      }
+      hasHunk = true;
+      hunkActive = true;
+      hunkHasCounts = false;
+      hunkHasChange = false;
+      continue;
+    }
+
+    if (hunkActive && line.startsWith("diff --git ")) {
+      if (!finishHunk()) {
+        return false;
+      }
+      hunkActive = false;
+      continue;
+    }
+
+    if (
+      !hunkActive &&
+      (line.startsWith("diff --git ") ||
+        line.startsWith("index ") ||
+        line.startsWith("--- ") ||
+        line.startsWith("+++ ") ||
+        line.startsWith("new file mode ") ||
+        line.startsWith("deleted file mode ") ||
+        line.startsWith("old mode ") ||
+        line.startsWith("new mode ") ||
+        line.startsWith("similarity index ") ||
+        line.startsWith("rename from ") ||
+        line.startsWith("rename to ") ||
+        line.startsWith("*** "))
+    ) {
+      continue;
+    }
+    if (hunkActive && isApplyPatch && line.startsWith("*** ")) {
+      continue;
+    }
+    if (line === "\\ No newline at end of file") {
+      continue;
+    }
+    if (!hasHunk) {
+      continue;
+    }
+
+    if (!hunkHasCounts && isApplyPatch) {
+      if (line.startsWith("+") || line.startsWith("-")) {
+        hunkHasChange = true;
+        continue;
+      }
+      if (line.startsWith(" ")) {
+        continue;
+      }
+      return false;
+    }
+
+    if (line.startsWith("+")) {
+      newCount += 1;
+      hunkHasChange = true;
+    } else if (line.startsWith("-")) {
+      oldCount += 1;
+      hunkHasChange = true;
+    } else if (line.startsWith(" ")) {
+      oldCount += 1;
+      newCount += 1;
+    } else {
+      return false;
+    }
+  }
+
+  return hasHunk && finishHunk();
+}
+
+function hunkCount(value: string | undefined): number {
+  if (!value) {
+    return 1;
+  }
+  return Number.parseInt(value, 10);
+}