100 lines
1.9 KiB
Bash
Executable file
100 lines
1.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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readonly SCAN_PATH="${1:-.}"
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case "${1:-}" in
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'-h' | '--help' | 'help')
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cat << 'EOF'
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precompress
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===========
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Usage
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-----
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precompress [path]
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If path is omitted, it used the current working directory.
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Primarily used for Caddy's file_sever directive's precompresed option.
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It will compress every non brotli, zstandard, or gzip file.
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EOF
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exit 0
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;;
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esac
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if [ "${SCAN_PATH}" = "." ] && [ -t 0 ] && [ -t 1 ] && [ -t 2 ]; then
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while read -r -p "About to compress all of ${PWD}, continue? [y/n] " ANSWER; do
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case "${ANSWER}" in
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'y')
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break
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;;
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'n')
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exit 1
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;;
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esac
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done
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fi
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readonly REQUIRED_APPS=(
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'ag'
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'brotli'
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'cat'
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'nproc'
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'pigz'
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'sha256sum'
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'tr'
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'xargs'
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'zstd'
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)
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for REQUIRED_APP in "${REQUIRED_APPS[@]}"; do
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if ! command -v "${REQUIRED_APP}" &> /dev/null; then
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>&2 echo "missing ${REQUIRED_APP} from PATH"
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exit 1
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fi
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done
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COMPRESS_SCRIPT="$(cat << 'EOF'
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set -euo pipefail
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readonly FILE_NAME="$0"
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errTrap() {
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>&2 echo "failed to compress $FILE_NAME"
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}
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trap errTrap ERR
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FILE_SHA256="$(sha256sum < "${FILE_NAME}")"
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readonly FILE_SHA256
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if ! [ -e "${FILE_NAME}.zst" ] || [ "${FILE_SHA256}" != "$(zstd -d -c "${FILE_NAME}.zst" | sha256sum)" ]; then
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echo "zstd: $FILE_NAME"
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rm -f "${FILE_NAME}.zst"
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zstd -k -T0 --ultra -20 "${FILE_NAME}" &> /dev/null &
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fi
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if ! [ -e "${FILE_NAME}.gz" ] || [ "${FILE_SHA256}" != "$(gzip -d -c "${FILE_NAME}.gz" | sha256sum)" ]; then
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echo "gzip: $FILE_NAME"
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rm -f "${FILE_NAME}.gz"
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pigz -k -9 "${FILE_NAME}" &> /dev/null &
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fi
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if ! [ -e "${FILE_NAME}.br" ] || [ "${FILE_SHA256}" != "$(brotli -d -c "${FILE_NAME}.br" | sha256sum)" ]; then
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echo "brotli: $FILE_NAME"
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rm -f "${FILE_NAME}.br"
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brotli -k -9 "${FILE_NAME}" &> /dev/null &
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fi
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wait
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EOF
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)"
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readonly COMPRESS_SCRIPT
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ag --nocolor --ignore '*.gz' --ignore '*.zst' --ignore '*.br' -g '' -l "${SCAN_PATH}" |
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tr '\n' '\0' |
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xargs -0 -r -n 1 -P "$(nproc)" "$(command -v bash)" -c "${COMPRESS_SCRIPT}"
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