complete codex cliproxyapi parity

src/server/transformers/shared/toolNameShortener.ts

@@ -0,0 +1,50 @@
+const TOOL_NAME_LIMIT = 64;
+const MCP_PREFIX = 'mcp__';
+
+function asTrimmedString(value: unknown): string {
+  return typeof value === 'string' ? value.trim() : '';
+}
+
+export function shortenToolNameIfNeeded(name: string): string {
+  const trimmed = asTrimmedString(name);
+  if (trimmed.length <= TOOL_NAME_LIMIT) return trimmed;
+  if (trimmed.startsWith(MCP_PREFIX)) {
+    const lastSeparator = trimmed.lastIndexOf('__');
+    if (lastSeparator > 0) {
+      const candidate = `${MCP_PREFIX}${trimmed.slice(lastSeparator + 2)}`;
+      return candidate.length > TOOL_NAME_LIMIT ? candidate.slice(0, TOOL_NAME_LIMIT) : candidate;
+    }
+  }
+  return trimmed.slice(0, TOOL_NAME_LIMIT);
+}
+
+export function buildShortToolNameMap(names: string[]): Record<string, string> {
+  const uniqueNames = Array.from(new Set(
+    names
+      .map((name) => asTrimmedString(name))
+      .filter((name) => name.length > 0),
+  ));
+  const used = new Set<string>();
+  const mapping: Record<string, string> = {};
+
+  for (const name of uniqueNames) {
+    const base = shortenToolNameIfNeeded(name);
+    let candidate = base;
+    let suffixIndex = 1;
+    while (used.has(candidate)) {
+      const suffix = `_${suffixIndex}`;
+      const allowedLength = Math.max(0, TOOL_NAME_LIMIT - suffix.length);
+      candidate = `${base.slice(0, allowedLength)}${suffix}`;
+      suffixIndex += 1;
+    }
+    used.add(candidate);
+    mapping[name] = candidate;
+  }
+
+  return mapping;
+}
+
+export function getShortToolName(name: string, mapping: Record<string, string>): string {
+  const trimmed = asTrimmedString(name);
+  return mapping[trimmed] || shortenToolNameIfNeeded(trimmed);
+}