mirror of
https://github.com/9001/copyparty.git
synced 2025-10-30 20:22:20 -06:00
74 lines
2.1 KiB
Bash
Executable file
74 lines
2.1 KiB
Bash
Executable file
#!/bin/bash
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set -e
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# recompress logs so they decompress faster + save some space;
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# * will not recurse into subfolders
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# * each file in current folder gets recompressed to zstd; input file is DELETED
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# * any xz-compressed logfiles are decompressed before converting to zstd
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# * SHOULD ignore and skip files which are currently open; SHOULD be safe to run while copyparty is running
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# for files larger than $cutoff, compress with `zstd -T0`
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# (otherwise do several files in parallel (scales better))
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cutoff=400M
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# osx support:
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# port install findutils gsed coreutils
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command -v gfind >/dev/null &&
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command -v gsed >/dev/null &&
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command -v gsort >/dev/null && {
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find() { gfind "$@"; }
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sed() { gsed "$@"; }
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sort() { gsort "$@"; }
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}
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packfun() {
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local jobs=$1 fn="$2"
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printf '%s\n' "$fn" | grep -qF .zst && return
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local of="$(printf '%s\n' "$fn" | sed -r 's/\.(xz|txt)/.zst/')"
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[ "$fn" = "$of" ] &&
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of="$of.zst"
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[ -e "$of" ] &&
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echo "SKIP: output file exists: $of" &&
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return
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lsof -- "$fn" 2>/dev/null | grep -E .. &&
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printf "SKIP: file in use: %s\n\n" $fn &&
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return
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# determine by header; old copyparty versions would produce xz output without .xz names
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head -c3 "$fn" | grep -qF 7z &&
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cmd="xz -dkc" || cmd="cat"
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printf '<%s> T%d: %s\n' "$cmd" $jobs "$of"
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$cmd <"$fn" >/dev/null || {
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echo "ERROR: uncompress failed: $fn"
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return
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}
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$cmd <"$fn" | zstd --long -19 -T$jobs >"$of"
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touch -r "$fn" -- "$of"
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cmp <($cmd <"$fn") <(zstd -d <"$of") || {
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echo "ERROR: data mismatch: $of"
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mv "$of"{,.BAD}
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return
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}
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rm -- "$fn"
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}
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# do small files in parallel first (in descending size);
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# each file can use 4 threads in case the cutoff is poor
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export -f packfun
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export -f sed 2>/dev/null || true
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find -maxdepth 1 -type f -size -$cutoff -printf '%s %p\n' |
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sort -nr | sed -r 's`[^ ]+ ``; s`^\./``' | tr '\n' '\0' |
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xargs "$@" -0i -P$(nproc) bash -c 'packfun 4 "$@"' _ {}
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# then the big ones, letting each file use the whole cpu
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for f in *; do packfun 0 "$f"; done
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