fix: clean the message file

Fixes #3

leaf

@@ -2,14 +2,15 @@
 set -e
 shopt -s inherit_errexit 2>/dev/null || true
 
-RED_COLOR="\e[1;31m"
-PURPLE_COLOR="\e[1;35m"
-GREEN_COLOR="\e[1;32m"
-CLEAR_COLOR="\e[0m"
+RED_COLOR=$"\e[1;31m"
+PURPLE_COLOR=$"\e[1;35m"
+GREEN_COLOR=$'\e[1;32m'
+CLEAR_COLOR=$'\e[0m'
 
 _DEF_PARALLEL_JOBS=4
 _ENV_PARALLEL_JOBS="${PARALLEL_JOBS}"
 source /etc/leaf.conf
+export PATH="/usr/bin:/usr/sbin"
 if [ -n "${_ENV_PARALLEL_JOBS}" ]; then
   export PARALLEL_JOBS="${_ENV_PARALLEL_JOBS}"
 elif [ -z "${PARALLEL_JOBS}" ]; then
@@ -23,6 +24,7 @@ export TESTSUITEFLAGS="-j${PARALLEL_JOBS}"
 export LANG=C
 export LC_CTYPE=C.UTF-8
 export leaf_flags="CFLAGS CXXFLAGS FCFLAGS FFLAGS RUSTFLAGS"
+export LEAF_MESSAGE_DIR="${TEMP_DIR:-/tmp}/leaf-messages"
 for flag in ${leaf_flags}; do
   export $flag
 done
@@ -33,7 +35,12 @@ BUILD_OPTIONS=([strip]="0" [libtool]="0" [zipman]="0")
 # global message file list
 declare -a LEAF_MESSAGE_FILES=()
 
+leaf_set_title() {
+  printf '\e]2;%s\a' "$*"
+}
+
 main() {
+  leaf_set_title "leaf"
   leaf_check_directories
   if [ $# -le 1 ]; then
     case $1 in
@@ -102,6 +109,11 @@ main() {
           leaf_unpack_package "${_item}"
         done
         ;;
+      query)
+        shift
+        [[ $# -eq 1 ]] || leaf_error "usage: leaf query <atom-or-name>"
+        leaf_query "$1"
+        ;;
       *)
         leaf_print_usage
         ;;
@@ -114,6 +126,10 @@ main() {
 # Help functions that give PKGBUILD to use
 ###########################################################
 
+leaf_info() {
+  echo -e "${GREEN_COLOR} * $1${CLEAR_COLOR}"
+}
+
 leaf_clear_flags() {
   for flag in $leaf_flags; do
     unset $flag
@@ -242,6 +258,7 @@ leaf_invoke_hooks() {
 
 leaf_merge_package() {
   pushd $1 > /dev/null 2>&1
+  leaf_set_title "leaf: ${PKG_PREFIX}/${PKG_NAME} (Merging)"
   local _trace_dir="${TRACE_DIR}/${PKG_PREFIX}/${PKG_NAME}"
   local _item _item_conflict _mode _owner _group
   local _time="$(date +%Y%m%d%H%M%S)"
@@ -289,6 +306,8 @@ leaf_merge_package() {
   done
   leaf_invoke_hooks install
   popd > /dev/null 2>&1
+  rm -rf "${LEAFHOME}"
+  rm -rf "${LEAFTMPDIR}"
 }
 
 leaf_parse_options() {
@@ -337,7 +356,7 @@ EOF
 
 leaf_message_init() {
   # one log per package invocation
-  local d="${TEMP_DIR}/leaf-messages/${PKG_PREFIX}/${PKG_NAME}"
+  local d="${LEAF_MESSAGE_DIR}/${PKG_PREFIX}/${PKG_NAME}"
   install -dm755 -- "$d"
   LEAF_MESSAGE_FILE="${d}/messages.$$.$(date +%Y%m%d%H%M%S).log"
   : > "${LEAF_MESSAGE_FILE}"
@@ -374,9 +393,10 @@ leaf_print_message() {
 
     echo -e "\n${PURPLE_COLOR}* Message from ${prefix}/${name}${CLEAR_COLOR}\n"
     cat -- "$f"
-    rm -f -- "$f"
   done
 
+  rm -rf -- "${LEAF_MESSAGE_DIR}"/*
+
   LEAF_MESSAGE_FILES=()
   unset LEAF_MESSAGE_FILE
 }
@@ -539,18 +559,25 @@ leaf_conffile_is_unmodified() {
 }
 
 leaf_update_package_database() {
-  local _item="$(echo "$2" | awk 'BEGIN{FS="/";OFS="\\/"}{print $1,$2}')"
-  case $1 in
+  local action=$1 atom=$2 db="${INSTALLED_PACKAGES}"
+  local tmp="${db}.tmp.$$"
+
+  case "$action" in
     add)
-      sed -i "/${_item}/d" "${INSTALLED_PACKAGES}"
-      echo "$2" >> ${INSTALLED_PACKAGES}
+      { [ -f "$db" ] && grep -Fvx -- "$atom" "$db" || :; printf '%s\n' "$atom"; } >"$tmp" &&
+      mv -f -- "$tmp" "$db"
       ;;
     delete)
-      sed -i "/${_item}/d" "${INSTALLED_PACKAGES}"
+      grep -Fvx -- "$atom" "$db" >"$tmp" &&
+      mv -f -- "$tmp" "$db"
+      ;;
+    *)
+      leaf_error "unknown operation leaf_update_package_database ${action}."
       ;;
   esac
 }
 
+
 leaf_update_environment() {
   ldconfig
   [ ! -r /etc/profile ] || source /etc/profile
@@ -572,6 +599,7 @@ leaf_run_phase() {
     return 0
   fi
 
+  leaf_set_title "leaf: ${PKG_PREFIX}/${PKG_NAME} (${phase})"
   echo -e "${GREEN_COLOR}>>> ${PKG_PREFIX}/${PKG_NAME}: ${phase}${CLEAR_COLOR}"
 
   set +e
@@ -604,8 +632,10 @@ leaf_prepare_package() {
   local checksum_algo checksum_arr_name
   local decl
 
+  leaf_set_title "leaf: ${PKG_PREFIX}/${PKG_NAME} (Fetching)"
+
   distdir="${DIST_DIR}"
-  filedir="${PKGBUILD_DIR}/${PKG_PREFIX}/${PKG_NAME}"
+  filedir="${PKGBUILD_DIR}/${PKG_PREFIX}/${pkgname}"
   mkdir -pv -- "${distdir}"
 
   # choose checksum type (sha512 -> sha256 -> md5)
@@ -858,6 +888,9 @@ leaf_upgrade_package() {
   new_trace_dir="${TRACE_DIR}/${new_prefix}/${new_name}"
   [ -d "${new_trace_dir}" ] || leaf_error "upgrade: new trace dir missing: ${new_trace_dir}"
 
+  rm -rf "${LEAFHOME}"
+  rm -rf "${LEAFTMPDIR}"
+
   # =========================================================
   # 3) REMOVE OLD, but SKIP paths owned by NEW
   # =========================================================
@@ -998,6 +1031,40 @@ leaf_show_package() {
   echo -e "License: ${license[@]}\n"
 }
 
+leaf_query() {
+  local q="$1"
+  local trace_root="${TRACE_DIR:-/var/lib/leaf/trace}"
+
+  if ! leaf_find_remove_pkgbuild "$q"; then
+    leaf_error "${q} cannot found in the leaf installed database."
+  fi
+
+  local pkgbuild_path="${trace_root}/${PKG_PREFIX}/${PKG_NAME}/PKGBUILD"
+  [[ -f "$pkgbuild_path" ]] || leaf_error "query: missing PKGBUILD: $pkgbuild_path"
+  [[ -r "$pkgbuild_path" ]] || leaf_error "query: PKGBUILD not readable: $pkgbuild_path"
+
+  (
+    set -euo pipefail
+
+    unset pkgname pkgver
+
+    # shellcheck disable=SC1090
+    source "$pkgbuild_path"
+
+    local full="${PKG_PREFIX}/${PKG_NAME}"
+
+    if [[ -t 1 && -z "${NO_COLOR-}" ]]; then
+      local BOLD=$'\e[1m'
+      printf '%s%s%s %s %s%s%s\n' \
+        "${BOLD}" "${full}" "${CLEAR_COLOR}" \
+        "${pkgname}" \
+        "${GREEN_COLOR}" "${pkgver}" "${CLEAR_COLOR}"
+    else
+      printf '%s %s %s\n' "${full}" "${pkgname}" "${pkgver}"
+    fi
+  )
+}
+
 leaf_pack_package() {
   leaf_build_package
   pushd "${srcdir}" > /dev/null 2>&1