chore: vendor sglang v0.5.10 snapshot

third_party/sglang/scripts/code_sync/utils.py

@@ -0,0 +1,136 @@
+"""
+Shared constants and helpers for code-sync scripts.
+"""
+
+import os
+import re
+import subprocess
+from typing import Optional
+
+# --- Configuration Begin ---
+# List of folders and files to copy to / from the OSS repo.
+# Changes outside these paths will be ignored.
+FOLDER_NAMES = [
+    "3rdparty",
+    "assets",
+    "benchmark",
+    "docker",
+    "docs",
+    "examples",
+    "python/sglang/lang",
+    "python/sglang/jit_kernel",
+    "python/sglang/srt",
+    "python/sglang/test",
+    "python/sglang/utils.py",
+    "python/sglang/README.md",
+    "sgl-kernel",
+    "test/manual",
+    "test/registered",
+    "test/srt",
+    "test/README.md",
+    "test/run_suite.py",
+    "README.md",
+]
+
+SYNC_COMMIT_PREFIX = r"\[Automated PR\] Copy OSS code from commit"
+# --- Configuration End ---
+
+
+def write_github_step_summary(content: str) -> None:
+    """Append *content* to the GitHub Actions step summary (no-op outside CI)."""
+    summary_path = os.environ.get("GITHUB_STEP_SUMMARY")
+    if not summary_path:
+        return
+    with open(summary_path, "a") as f:
+        f.write(content)
+
+
+def get_last_sync_commit(repo_root: Optional[str] = None) -> Optional[str]:
+    """
+    Find the most recent sync commit that copied from OSS.
+
+    Returns the full private-repo commit hash, or None if not found.
+    The match is restricted to commits whose **subject** starts with the
+    sync prefix so that unrelated commits mentioning the phrase in their
+    body are ignored.
+    """
+    subject_pattern = re.compile("^" + SYNC_COMMIT_PREFIX)
+
+    try:
+        cmd = [
+            "git",
+            "log",
+            "--all",
+            "--grep",
+            SYNC_COMMIT_PREFIX,
+            "--format=%H %s",
+        ]
+        result = subprocess.run(
+            cmd,
+            capture_output=True,
+            text=True,
+            check=True,
+            cwd=repo_root,
+        ).stdout.strip()
+
+        for line in result.splitlines():
+            # Format: "<full_hash> <subject>"
+            parts = line.split(" ", 1)
+            if len(parts) != 2:
+                continue
+            commit_hash, subject = parts
+            if subject_pattern.search(subject):
+                return commit_hash
+
+        return None
+    except subprocess.CalledProcessError as e:
+        print(f"Error finding last sync commit: {e.stderr}")
+        return None
+
+
+def find_latest_oss_sync_commit(repo_root: Optional[str] = None) -> Optional[str]:
+    """
+    Search the private repo history for the latest commit whose **subject**
+    matches "[Automated PR] Copy OSS code from commit {commit_id} on {date}"
+    and return the embedded **OSS** commit hash.
+
+    Returns the short OSS commit hash string, or None if not found.
+    """
+    oss_hash_pattern = re.compile("^" + SYNC_COMMIT_PREFIX + r" ([0-9a-f]+)")
+
+    try:
+        # --grep filters on the full message body, so we request subject-only
+        # output and validate the pattern against the subject ourselves.
+        result = subprocess.run(
+            [
+                "git",
+                "log",
+                "--all",
+                "--grep",
+                SYNC_COMMIT_PREFIX,
+                "--pretty=%s",
+            ],
+            capture_output=True,
+            text=True,
+            check=True,
+            cwd=repo_root,
+        )
+
+        for subject in result.stdout.strip().splitlines():
+            m = oss_hash_pattern.search(subject)
+            if m:
+                oss_commit = m.group(1)
+                print(
+                    f"✅ Latest OSS sync commit found: {oss_commit} "
+                    f"(from: {subject})"
+                )
+                return oss_commit
+
+        print(
+            "⚠️  No '[Automated PR] Copy OSS code from commit ...' " "found in history."
+        )
+        return None
+
+    except subprocess.CalledProcessError as e:
+        print(f"Error searching for OSS sync commits: {e.stderr.strip()}")
+        return None