From e18b24c5a3314a430c66eae6f2c47e52ba1ab66f Mon Sep 17 00:00:00 2001
From: Alex Dehnert <adehnert@mit.edu>
Date: Mon, 25 Mar 2013 23:58:01 -0400
Subject: [PATCH] Resync zephyr-post-receive with upstream

This incorporates the changes in snippets from
7f3e83eb49926fd6bf2d60ee2a9642640e5b8b0b ("zephyr-post-receive: Detect
renames." by Anders) to 0a6422ec6a30429215c4a93dd5a40799712c09b0
("zephyr-post-receive: fix quoting and tabs" by me).
---
 git-hooks/sub/zephyr-post-receive |   45 ++++++++++++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 5 deletions(-)

diff --git a/git-hooks/sub/zephyr-post-receive b/git-hooks/sub/zephyr-post-receive
index 3cb2086..293cae6 100755
--- a/git-hooks/sub/zephyr-post-receive
+++ b/git-hooks/sub/zephyr-post-receive
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # This script is run after receive-pack has accepted a pack and the
 # repository has been updated.  It is passed arguments in through stdin
@@ -13,6 +13,7 @@ class=$(invirt-getconf "$base.class" 2>/dev/null)
 instance=$(invirt-getconf "$base.instance" 2>/dev/null)
 zsig=$(invirt-getconf "$base.zsig" 2>/dev/null)
 color=$(invirt-getconf "$base.color" 2>/dev/null)
+maxlines=`git config --int zephyr.maxlines 2>/dev/null || echo 50`
 
 # Git hooks are always called with PWD == GIT_DIR.
 repo=${PWD#/srv/git/}
@@ -24,30 +25,64 @@ else
     usecolor=""
 fi
 
+if [ -z "$zsig" ]; then
+    if [ -e "$GIT_DIR/description" ]; then
+        zsig=`cat "$GIT_DIR/description"`
+    fi
+    if [ -z "$zsig" ] || \
+        [ "$zsig" = "Unnamed repository; edit this file to name it for gitweb." ] || \
+        [ "$zsig" = "Unnamed repository; edit this file 'description' to name the repository." ]; then
+        zsig=$(basename "$(cd "$GIT_DIR" && pwd)")
+        if [ "$zsig" = ".git" ]; then
+            zsig=$(basename "$(cd "$GIT_DIR/.." && pwd)")
+        fi
+    fi
+fi
+
 if [ -z "$class" ]; then
   echo "I don't know where to send a commit zephyr!" >&2
   echo "Please provide a value for $base.class in" >&2
   echo "your invirt config file." >&2
   exit 1
 fi
+
+let max=10
+check_max () {
+  if ! let --max; then
+    zwrite -c "$class" -i "${instance:-git}" -s "Aperture Science Emergency Intelligence Incinerator" -d \
+      -m 'Aborting zephyr hook to prevent zwrite flood.'
+    exit 0
+  fi
+}
+
 while read oldrev newrev refname; do
   if [ "$oldrev" = "0000000000000000000000000000000000000000" ]; then
+    check_max
     # dammit git
     zwrite -c "$class" -i "$repo" -s "${zsig:-Git}: $refname" -d \
-      -m "New branch ${refname#refs/heads/} created."
+      -m "New branch ${refname#refs/heads/} created, currently at $newrev."
     continue
   fi
-  git rev-list --first-parent --reverse "$oldrev..$newrev" | while read rev; do
+  while read rev; do
+    check_max
     shortrev=`git log -1 --pretty=format:%h "$rev"`
-    (git show --stat -M $usecolor "$rev" |
+    lines=`git show -M "$rev" | wc -l`
+    if [ $lines -lt $maxlines ]; then
+        stat=""
+    else
+        stat="--stat"
+    fi
+    (git show -M $stat $usecolor "$rev" |
      sed -e 's/@/@@/g' \
          -e 's/}/@(})/g' \
          -e 's/\[m/}@{/g' \
+         -e 's/\[1m/}@b{/g' \
          -e 's/\[33m/@color(yellow)/g' \
          -e 's/\[31m/@color(red)/g' \
          -e 's/\[32m/@color(green)/g' \
+         -e 's/\[36m/@color(cyan)/g' \
          -e '1s/^/@{/' \
          -e '$s/$/}/') |
     zwrite -c "$class" -i "${instance:-$repo/$shortrev}" -s "${zsig:-Git}: $refname" -d
-  done
+  done < <(git rev-list --first-parent --reverse "$oldrev..$newrev")
 done
-- 
1.7.9.5