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do not rebuild files that haven't changed

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davidovski 2024-03-21 11:32:02 +00:00
parent f8b8b0a7ca
commit 14b7eb50d3
1 changed files with 21 additions and 8 deletions
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23
src/shblg.sh
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@ -8,6 +8,12 @@ usage () {
exit 1 exit 1
} }
# check if a file has changed since last generating
#
newer () {
[ ! -e "$2" ] || [ "$1" -nt "$2" ]
}
while getopts ":o:i:h" opt; do while getopts ":o:i:h" opt; do
case "$opt" in case "$opt" in
o) o)
@ -29,22 +35,29 @@ process () {
dirpath="${1%"${1##*/}"}" dirpath="${1%"${1##*/}"}"
out_file="${OUTPUT_DIR}${path}" out_file="${OUTPUT_DIR}${path}"
printf "%s ...\n" "$path"
[ -d "$1" ] && { [ -d "$1" ] && {
mkdir -p "$out_file" mkdir -p "$out_file"
for f in "$1"/*; do for f in "$1"/*; do
process "$f" process "$f"
done done
return 0 return 0
} || [ -x "$1" ] && ( } || [ -x "$1" ] && {
newer "$1" "$out_file" && (
# execute the file # execute the file
cd "$dirpath" cd $dirpath
"$1" > "${out_file}" printf "#!%s\n" "$path"
"$1" > "$out_file"
)
return 0 return 0
) || { } || {
newer "$1" "$out_file" && (
# just copy the file as is # just copy the file as is
printf "%s\n" "$path"
cp "$1" "$out_file" cp "$1" "$out_file"
)
return 0 return 0
} }
} }