[arch-projects] [dbscripts] [PATCH v2 7/8] Replace all instances of `find` command with bash globbing

[Luke Shumaker]

From: Luke Shumaker <lukeshu at parabola.nu>

This fully removes the use of find from the codebase, and leads to a
micro-optimization in a couple cases.

Of the 5 instances in these files:

 - (ftpdir-cleanup) One was unnecessary as `cat` can natively consume
   all files passed to it (from a glob) and no directory traversal was
   in use.  We don't have to worry about the glob being empty, unless
   config:ARCHES or config:PKGREPOS is mis/non-configured and is
   empty.

 - (sourceballs) One was only being used to strip leading directory
   paths, and can be replaced by ${filepath##*/} in a for loop.

 - (sourceballs) Two were unnecessary as they were hardcoded to read a
   single file.

 - (sourceballs) One was checking the modification time of the files,
   and can be replaced with touch(1) and [[ -nt ]].  Although this
   introduces an additional temporary file, this is not such a big
   deal.

This is based on patches by Eli Schwartz <eschwartz at archlinux.org>
---
 cron-jobs/ftpdir-cleanup |  2 +-
 cron-jobs/sourceballs    | 18 ++++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/cron-jobs/ftpdir-cleanup b/cron-jobs/ftpdir-cleanup
index 64d50ef..6a6c82f 100755
--- a/cron-jobs/ftpdir-cleanup
+++ b/cron-jobs/ftpdir-cleanup
@@ -70,7 +70,7 @@ for f in "$FTP_BASE/${PKGPOOL}"/*${PKGEXT_glob}; do
 	printf '%s\n' "${f##*/}"
 done | sort > "${WORKDIR}/pool"
 # create a list of packages in our db
-find "${WORKDIR}" -maxdepth 1 -type f -name 'db-*' -exec cat {} \; | sort -u > "${WORKDIR}/db"
+cat "${WORKDIR}"/db-* 2>/dev/null | sort -u > "${WORKDIR}/db"
 
 old_pkgs=($(comm -23 "${WORKDIR}/pool" "${WORKDIR}/db"))
 if [ ${#old_pkgs[@]} -ge 1 ]; then
diff --git a/cron-jobs/sourceballs b/cron-jobs/sourceballs
index 9ab4e98..c47d5ad 100755
--- a/cron-jobs/sourceballs
+++ b/cron-jobs/sourceballs
@@ -46,7 +46,11 @@ for repo in ${PKGREPOS[@]}; do
 done
 
 # Create a list of all available source package file names
-find "${FTP_BASE}/${SRCPOOL}" -xtype f -name "*${SRCEXT}" -printf '%f\n' | sort -u > "${WORKDIR}/available-src-pkgs"
+for f in "${FTP_BASE}"/${SRCPOOL}/*${SRCEXT}; do
+	if [[ -f $f ]]; then
+		printf '%s\n' "${f##*/}"
+	fi
+done | sort -u > "${WORKDIR}/available-src-pkgs"
 
 # Check for all packages if we need to build a source package
 for repo in ${PKGREPOS[@]}; do
@@ -117,8 +121,8 @@ for repo in ${PKGREPOS[@]}; do
 done
 
 # Cleanup old source packages
-find "${WORKDIR}" -maxdepth 1 -type f -name 'expected-src-pkgs' -exec cat {} \; | sort -u > "${WORKDIR}/expected-src-pkgs.sort"
-find "${WORKDIR}" -maxdepth 1 -type f -name 'available-src-pkgs' -exec cat {} \; | sort -u > "${WORKDIR}/available-src-pkgs.sort"
+sort -u "${WORKDIR}/expected-src-pkgs" > "${WORKDIR}/expected-src-pkgs.sort"
+sort -u "${WORKDIR}/available-src-pkgs" > "${WORKDIR}/available-src-pkgs.sort"
 old_pkgs=($(comm -23 "${WORKDIR}/available-src-pkgs.sort" "${WORKDIR}/expected-src-pkgs.sort"))
 
 if [ ${#old_pkgs[@]} -ge 1 ]; then
@@ -133,7 +137,13 @@ if [ ${#old_pkgs[@]} -ge 1 ]; then
 	done
 fi
 
-old_pkgs=($(find ${SOURCE_CLEANUP_DESTDIR} -type f -name "*${SRCEXT}" -mtime +${SOURCE_CLEANUP_KEEP} -printf '%f\n'))
+old_pkgs=()
+touch -d "${SOURCE_CLEANUP_KEEP} days ago"  "${WORKDIR}/cleanup_timestamp"
+for f in "${SOURCE_CLEANUP_DESTDIR}"/*${SRCEXT}; do
+	if [[ ${WORKDIR}/cleanup_timestamp -nt $f ]]; then
+		old_pkgs+=("${f##*/}")
+	fi
+done
 if [ ${#old_pkgs[@]} -ge 1 ]; then
 	msg "Removing old source packages from the cleanup directory..."
 	for old_pkg in ${old_pkgs[@]}; do
-- 
2.16.1