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add script for updating Whatprovides database

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See https://github.com/termux/whatprovides...
This commit is contained in:
Leonid Pliushch 2020-11-21 20:52:09 +02:00
parent 9773e9f0a2
commit d0c0189281
1 changed files with 89 additions and 0 deletions
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scripts/bin/update-whatprovides-db Executable file
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#!/usr/bin/env bash
##
## Script that generates or updates a Whatprovides
## database for Termux.
##
## Copy of https://github.com/termux/whatprovides/blob/f93bad1cfc731d7fd6bba8460e2f1c48281a805f/update-whatprovides-db.sh
## but edited for special use in termux-packages.
##
set -e -u
DEBS_DIR_PATH=$(realpath "$(dirname "$0")/../../debs")
list_files() {
dpkg-deb -c "${1}" | grep -o "/data/data/com.termux/.*" | sed -E 's@(.*) ->..*@\1@g'
}
write_sql_script() {
local debfile_dir=$1
local debfile_path
# SQL statements should be executed within a single
# transaction, otherwise execution performance would
# be very slow.
echo "BEGIN TRANSACTION;" >> "$SQLSCRIPT_TMPFILE"
while read -r debfile_path; do
# .deb files are named package-name_version-revision_cpuarch.deb
local package_name
package_name=$(basename "$debfile_path" | cut -d_ -f1)
echo "[*] Processing '${debfile_path}'..." >&2
# Delete content of processed package to ensure there will not be any
# duplicates and stale entries.
echo "DELETE FROM whatprovides WHERE package_name == \"${package_name}\";" >> "$SQLSCRIPT_TMPFILE"
# Add row with matching package-name and file-name.
while read -r file_path; do
echo "${package_name}: adding '${file_path}'" >&2
echo "INSERT INTO whatprovides (package_name, owned_file) VALUES (\"${package_name}\", \"${file_path}\");" >> "$SQLSCRIPT_TMPFILE"
done < <(list_files "$debfile_path")
# Note: searching only for ARCH "all" (platform-independent) and "aarch64" which
# has 100% support by Termux packages.
done < <(find "$debfile_dir" -type f \( -name "*_all.deb" -o -name "*_aarch64.deb" \) -print)
echo "COMMIT;" >> "$SQLSCRIPT_TMPFILE"
# Databases which were not generated from scratch needs
# to be compacted.
echo "VACUUM;" >> "$SQLSCRIPT_TMPFILE"
echo "REINDEX;" >> "$SQLSCRIPT_TMPFILE"
}
if [ $# -ge 1 ]; then
SQLSCRIPT_TMPFILE=$(mktemp -t "whatprovides.XXXXXX.sql")
if [ ! -d "$DEBS_DIR_PATH" ]; then
echo "[!] Directory '$DEBS_DIR_PATH' is not found. Perhaps no packages built?" >&2
exit 1
fi
if [ $(find "$DEBS_DIR_PATH" -type f -name "*.deb" | wc -l) -eq 0 ]; then
echo "[!] Directory '$DEBS_DIR_PATH' does not contain any .deb files." >&2
exit 1
fi
if [ ! -e "${1}" ]; then
echo "[*] Creating new database." >&2
sqlite3 "$1" "CREATE TABLE whatprovides ( id INTEGER PRIMARY KEY, package_name TEXT NOT NULL, owned_file TEXT NOT NULL);"
fi
echo "[*] Generating SQL script..." >&2
write_sql_script "$DEBS_DIR_PATH" "$SQLSCRIPT_TMPFILE"
echo "[*] Rebuilding database..." >&2
sqlite3 "$1" < "$SQLSCRIPT_TMPFILE"
rm -f "${SQLSCRIPT_TMPFILE}"
echo "[*] Done." >&2
else
echo
echo "Usage: update-whatprovides-db.sh [db path]"
echo
echo "Regenerate a database for Termux Whatprovides utility."
echo
exit 1
fi