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Add experimental compression

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Ethan P 2019-10-11 13:03:47 -07:00
parent 2a8de58809
commit 358632ed9d
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GPG Key ID: 6963FD04F6CF35EA
1 changed files with 29 additions and 2 deletions
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31
build.sh
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@ -26,8 +26,7 @@ set -eo pipefail
# Output: # Output:
# The processed file data. # The processed file data.
next() { next() {
local buffer="$(cat)" "$@"
"$@" <<< "$buffer"
return $? return $?
} }
@ -122,6 +121,31 @@ step_minify() {
pp_minify | pp_minify_unsafe pp_minify | pp_minify_unsafe
} }
# Build step: compress
# Compresses the input into a gzipped self-executable script.
#
# Input:
# The original file contents.
#
# Output:
# The compressed self-executable script.
step_compress() {
if ! "$OPT_COMPRESS"; then
smsg "Compressing" "SKIP"
cat
return 0
fi
local wrapper="$({
printf '#!/usr/bin/env bash\n'
printf "(exec -a \"\$0\" bash -c 'eval \"\$(cat <&3)\"' \"\$0\" \"\$@\" 3< <(dd bs=1 if=\"\$0\" skip=::: 2>/dev/null | gunzip)); exit \$?;\n"
})"
smsg "Compressing"
sed "s/:::/$(wc -c <<< "$wrapper" | bc)/" <<< "$wrapper"
gzip
}
# Build step: write # Build step: write
# Writes the output script to a file. # Writes the output script to a file.
# #
@ -193,6 +217,7 @@ pp_minify_unsafe() {
# ----------------------------------------------------------------------------- # -----------------------------------------------------------------------------
# Options. # Options.
OPT_INSTALL=false OPT_INSTALL=false
OPT_COMPRESS=false
OPT_VERIFY=true OPT_VERIFY=true
OPT_MINIFY="lib" OPT_MINIFY="lib"
OPT_PREFIX="/usr/local" OPT_PREFIX="/usr/local"
@ -204,6 +229,7 @@ DOCS_MAINTAINER="eth-p <eth-p@hidden.email>"
while shiftopt; do while shiftopt; do
case "$OPT" in case "$OPT" in
--install) OPT_INSTALL=true;; --install) OPT_INSTALL=true;;
--compress) OPT_COMPRESS=true;;
--prefix) shiftval; OPT_PREFIX="$OPT_VAL";; --prefix) shiftval; OPT_PREFIX="$OPT_VAL";;
--alternate-executable) shiftval; OPT_BAT="$OPT_VAL";; --alternate-executable) shiftval; OPT_BAT="$OPT_VAL";;
--minify) shiftval; OPT_MINIFY="$OPT_VAL";; --minify) shiftval; OPT_MINIFY="$OPT_VAL";;
@ -267,6 +293,7 @@ for file in "${SOURCES[@]}"; do
step_read "$file" |\ step_read "$file" |\
next step_preprocess |\ next step_preprocess |\
next step_minify |\ next step_minify |\
next step_compress |\
next step_write "${BIN}/${filename}" |\ next step_write "${BIN}/${filename}" |\
next step_write_install "${OPT_PREFIX}/bin/${filename}" |\ next step_write_install "${OPT_PREFIX}/bin/${filename}" |\
cat >/dev/null cat >/dev/null