X-Git-Url: https://git.madduck.net/code/topgit-ng.git/blobdiff_plain/34bbe7c33ac672f2fc80f639277f9ba750a3d957..dc58ec49df849ec1aef6929cd40c759a6018e056:/tg-datastore.inc?ds=sidebyside

diff --git a/tg-datastore.inc b/tg-datastore.inc
new file mode 100644
index 0000000..d79f159
--- /dev/null
+++ b/tg-datastore.inc
@@ -0,0 +1,45 @@
+die()
+{
+  printf "E: $@\n" >&2
+  exit 1
+}
+
+tg_ds_resolve_commit()
+{
+  git rev-parse --verify $1 2>/dev/null
+}
+
+. ${0%/*}/tg-datastore-pcommits.inc
+
+tg_ds_get_value()
+{
+  local name; name="${1:-}"
+  local commit; commit="${2:-HEAD}"
+
+  [ -z "$1" ] && die 'tg_ds_get_value: missing first argument (name)'
+  tg_ds_resolve_commit $commit >/dev/null || die "tg_ds_get_value: invalid commit: $commit"
+
+  local data; data=$(tg_ds_list_data "$commit") || return 1
+  printf "$data\n" | sed -rne "s,^${name}: *,,p"
+}
+
+tg_ds_find_value()
+{
+  local name; name="${1:-}"
+  local commit; commit="${2:-HEAD}"
+
+  [ -z "$1" ] && die 'tg_ds_find_value: missing first argument (name)'
+  ref=$(tg_ds_resolve_commit $commit) || die "tg_ds_find_value: invalid commit: $commit"
+
+  while :; do
+    if [ "$name" = commitref ]; then
+      tg_ds_list_data "$commit" >/dev/null && printf "$ref\n" && return 0
+    else
+      tg_ds_get_value "$name" $commit && return 0
+    fi
+    commit="${commit}^"
+    ref=$(tg_ds_resolve_commit "${commit}") || break
+  done
+
+  return 1
+}