From af1fcabbf03909c4ccdd9cd57374a486a6be9ad5 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Fri, 16 Jun 2017 10:59:58 +0200
Subject: bin/db-update: remove <()-bashisms

---
 bin/db-update | 99 +++++++++++++++++++++++++++++++----------------------------
 1 file changed, 52 insertions(+), 47 deletions(-)

(limited to 'bin')

diff --git a/bin/db-update b/bin/db-update
index 2d161ed..f8205dc 100755
--- a/bin/db-update
+++ b/bin/db-update
@@ -87,23 +87,15 @@ if ! flock ${block_flag} 8; then
   exit 1
 fi
 
+tmp_dir="$(mktemp -d)"
+
 clean_up_lock_file() {
   rm -f "${package_database_lock_file}" "${build_list_lock_file}"
+  rm -rf --one-file-system "${tmp_dir}"
 }
 
 trap clean_up_lock_file EXIT
 
-# packages which can't be un-staged because they're still dependencies
-# of any job on the build-list
-
-keep_packages="$(
-  while read -r pkg pkg_rev mod_rev repo; do
-    cat "${work_dir}/package-infos/${pkg}.${pkg_rev}.${mod_rev}.depends"
-  done < \
-    "${work_dir}/build-list" | \
-    sort -u
-)"
-
 # sanity check
 
 if [ -n "$(
@@ -116,70 +108,83 @@ if [ -n "$(
   exit 42
 fi
 
+# packages which can't be un-staged because they're still dependencies
+# of any job on the build-list
+
+while read -r pkg pkg_rev mod_rev repo; do
+  cat "${work_dir}/package-infos/${pkg}.${pkg_rev}.${mod_rev}.depends"
+done < \
+  "${work_dir}/build-list" | \
+  sort -u > \
+  "${tmp_dir}/keep_packages"
+
 # packages which are done
 
-done_packages="$(
-  ls "${work_dir}/package-states" | \
-    grep '\.done$' | \
-    sed 's|^\(.*\)\(\(\.[^.]\+\)\{3\}\)\.done$|\1 \1\2|' | \
-    sort
-)"
+ls "${work_dir}/package-states" | \
+  grep '\.done$' | \
+  sed 's|^\(.*\)\(\(\.[^.]\+\)\{3\}\)\.done$|\1 \1\2|' | \
+  sort > \
+  "${tmp_dir}/done_packages"
 
 # remove packages not yet done from keep-packages list
 
 keep_packages="$(
   join -1 1 -2 1 -o 2.2 \
-    <(
-      echo "${keep_packages}"
-    ) \
-    <(
-      echo "${done_packages}"
-    )
+    "${tmp_dir}/keep_packages" \
+    "${tmp_dir}/done_packages"
 )"
+printf '%s\n' "${keep_packages}" > \
+  "${tmp_dir}/keep_packages"
 
 # packages which can't be unstaged
-
-new_keep_packages="${keep_packages}"
+mv \
+  "${tmp_dir}/keep_packages" \
+  "${tmp_dir}/new_keep_packages"
 keep_packages=''
 
-while [ -n "${new_keep_packages}" ]; do
+while [ -s "${tmp_dir}/new_keep_packages" ]; do
 
-  for package in ${new_keep_packages}; do
+  while read -r package; do
     generate_package_metadata "${package}"
-  done
-  if [ -z "${done_packages}" ]; then
-    break
-  fi
+  done < "${tmp_dir}/new_keep_packages"
 
   keep_packages="$(
-    printf '%s\n' "${keep_packages}" "${new_keep_packages}" | \
+    (
+      printf '%s\n' "${keep_packages}"
+      cat "${tmp_dir}/new_keep_packages"
+    ) | \
       sort -u | \
       grep -v '^$'
   )"
 
   new_keep_packages="$(
-    join -1 1 -2 1 -o 2.2 \
-      <(
-        echo "${new_keep_packages}" | \
-          while read -r package; do
-            cat "${work_dir}/package-infos/${package%.*}.depends"
-          done | \
-          sort -u
-      ) \
-      <(
-        echo "${done_packages}"
-      )
+    while read -r package; do
+      cat "${work_dir}/package-infos/${package%.*}.depends"
+    done < \
+      "${tmp_dir}/new_keep_packages" | \
+      sort -u
   )"
+  printf '%s\n' "${new_keep_packages}" > \
+    "${tmp_dir}/new_keep_packages"
 
-  # "new" is only what has not been there before
   new_keep_packages="$(
-    printf '%s\n' "${keep_packages}" "${keep_packages}" "${new_keep_packages}" | \
-      sort | \
-      uniq -u
+    join -1 1 -2 1 -o 2.2 \
+      "${tmp_dir}/new_keep_packages" \
+      "${tmp_dir}/done_packages"
   )"
 
+  # "new" is only what has not been there before
+  printf '%s\n' "${keep_packages}" "${keep_packages}" "${new_keep_packages}" | \
+    sort | \
+    uniq -u > \
+    "${tmp_dir}/new_keep_packages"
+
 done
 
+done_packages="$(cat "${tmp_dir}/done_packages")"
+
+rm -rf --one-file-system "${tmp_dir}"
+
 # unlock build list
 
 rm -f "${build_list_lock_file}"
-- 
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