hooks/pre-commit: check .top* files in the to-be-commited tree

[topgit.git] / hooks / pre-commit.sh

diff --git a/hooks/pre-commit.sh b/hooks/pre-commit.sh
index da631856909dba5a7420ee402e583fbde892f68a..8ac913f6479d86af2a64e2dea1e0aff39f347cd4 100644 (file)
--- a/hooks/pre-commit.sh
+++ b/hooks/pre-commit.sh
@@ -17,12 +17,48 @@ tg_util
 ## Generally have fun
 
 # Don't do anything on non-topgit branch
-git rev-parse --verify "$(git symbolic-ref HEAD | sed 's/heads/top-bases/')" >/dev/null 2>&1 ||
-       exit 0
+if head_=$(git symbolic-ref -q HEAD); then
+       case "$head_" in
+               refs/heads/*)
+                       git rev-parse -q --verify "refs/top-bases${head_#refs/heads}" >/dev/null || exit 0;;
+               *)
+                       exit 0;;
+       esac
 
-[ -s "$root_dir/.topdeps" ] ||
-       die ".topdeps is missing"
-[ -s "$root_dir/.topmsg" ] ||
-       die ".topmsg is missing"
+else
+       exit 0;
+fi
+
+check_topfile()
+{
+       local tree file ls_line type size
+       tree=$1
+       file=$2
+
+       ls_line="$(git ls-tree --long "$tree" "$file")" ||
+               die "Can't ls tree for $file"
+
+       [ -n "$ls_line" ] ||
+               die "$file is missing"
+
+       # check for type and size
+       set -- $ls_line
+       type=$2
+       size=$4
+
+       # check file is of type blob (file)
+       [ "x$type" = "xblob" ] ||
+               die "$file is not a file"
+
+       # check for positive size
+       [ "$size" -gt 0 ] ||
+               die "$file has empty size"
+}
+
+tree=$(git write-tree) ||
+       die "Can't write tree"
+
+check_topfile "$tree" ".topdeps"
+check_topfile "$tree" ".topmsg"
 
 # TODO: Verify .topdeps for valid branch names and against cycles