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author | davidovski <david@davidovski.xyz> | 2024-03-21 11:32:02 +0000 |
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committer | davidovski <david@davidovski.xyz> | 2024-03-21 11:33:45 +0000 |
commit | 14b7eb50d3c2f41fec9d03580a5f531cc91f6dad (patch) | |
tree | 4a87afba4a719aa2e5dfec30d7d62a847d60ee1d /src | |
parent | f8b8b0a7cad96c648c896fa6eb660fdb988dfdb2 (diff) |
do not rebuild files that haven't changed
Diffstat (limited to 'src')
-rwxr-xr-x | src/shblg.sh | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/src/shblg.sh b/src/shblg.sh index 61ef7db..e5b10f5 100755 --- a/src/shblg.sh +++ b/src/shblg.sh @@ -8,6 +8,12 @@ usage () { exit 1 } +# check if a file has changed since last generating +# +newer () { + [ ! -e "$2" ] || [ "$1" -nt "$2" ] +} + while getopts ":o:i:h" opt; do case "$opt" in o) @@ -29,22 +35,29 @@ process () { dirpath="${1%"${1##*/}"}" out_file="${OUTPUT_DIR}${path}" - printf "%s ...\n" "$path" [ -d "$1" ] && { + mkdir -p "$out_file" for f in "$1"/*; do process "$f" done + return 0 - } || [ -x "$1" ] && ( - # execute the file - cd "$dirpath" - "$1" > "${out_file}" + } || [ -x "$1" ] && { + newer "$1" "$out_file" && ( + # execute the file + cd $dirpath + printf "#!%s\n" "$path" + "$1" > "$out_file" + ) return 0 - ) || { - # just copy the file as is - cp "$1" "$out_file" + } || { + newer "$1" "$out_file" && ( + # just copy the file as is + printf "%s\n" "$path" + cp "$1" "$out_file" + ) return 0 } } |