ginnoir
57aba346f9
igir-report.ps1: read-only igir report over the EmuDeck tree on valhalla, matching ROMs by checksum against libretro's No-Intro + Redump DAT sets (sparse-cloned + cached). Scoped (-Platforms) or whole-library (-All); CSV per run under /storage1/igir/reports. Uses node:lts (alpine breaks igir on musl) and metadat/no-intro (not the curated dat/ folder). igir-strip-snes-headers.sh: reversible backup-then-strip of 512-byte SNES copier headers (size%1024==512) that igir can't auto-detect, renaming to .sfc so headered ROMs match headerless No-Intro.
80 lines
2.9 KiB
Bash
80 lines
2.9 KiB
Bash
#!/usr/bin/env bash
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# scripts/igir-strip-snes-headers.sh (runs ON valhalla)
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#
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# SNES copier ROMs carry a 512-byte header (file size % 1024 == 512). igir
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# detects SNES headers by content *signature*, which these copier headers lack,
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# so it can't strip them and they never match headerless No-Intro DATs — even
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# though their headerless checksum IS in No-Intro. This script blind-strips that
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# 512-byte header (the universally-correct fix for SNES) and renames to .sfc.
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#
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# It is a MUTATION of the live EmuDeck tree (RomM + EmuDeck read it). Every
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# touched file is tar'd to a backup first, so the change is fully reversible.
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#
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# Usage (default folder = snes):
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# ssh ginnoir@valhalla 'bash -s' < scripts/igir-strip-snes-headers.sh
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# ssh ginnoir@valhalla 'bash -s -- sfc' < scripts/igir-strip-snes-headers.sh
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# ssh ginnoir@valhalla 'bash -s -- snes 1' < scripts/igir-strip-snes-headers.sh # 2nd arg=1 => dry run
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#
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# Restore from a backup:
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# tar xzf /storage1/igir/backup/<folder>-headered-<stamp>.tar.gz \
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# -C /storage1/Emulation/roms/<folder>
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set -uo pipefail
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FOLDER="${1:-snes}"
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DRYRUN="${2:-0}"
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ROOT="/storage1/Emulation/roms/$FOLDER"
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BK="/storage1/igir/backup"
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STAMP="$(date +%Y-%m-%d)"
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[ -d "$ROOT" ] || { echo "No such folder: $ROOT"; exit 1; }
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mkdir -p "$BK"
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cd "$ROOT" || exit 1
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shopt -s nullglob nocaseglob
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# Collect headered SNES ROMs (size % 1024 == 512).
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list="$(mktemp)"; : > "$list"
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for f in *.smc *.sfc *.fig *.swc; do
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[ -f "$f" ] || continue
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s=$(stat -c %s "$f")
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[ $((s % 1024)) -eq 512 ] && printf '%s\0' "$f" >> "$list"
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done
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n=$(grep -zc . "$list" || true)
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echo "Headered files in '$FOLDER': $n"
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if [ "$n" -eq 0 ]; then echo "Nothing to strip."; rm -f "$list"; exit 0; fi
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if [ "$DRYRUN" = "1" ]; then
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echo "(dry run) would back up to $BK/$FOLDER-headered-$STAMP.tar.gz and strip $n files."
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rm -f "$list"; exit 0
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fi
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# Back up originals before mutating.
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bkfile="$BK/$FOLDER-headered-$STAMP.tar.gz"
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tar --null -czf "$bkfile" -T "$list"
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echo "Backup: $bkfile ($(stat -c %s "$bkfile") bytes, $(tar tzf "$bkfile" | wc -l) files)"
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# Strip: drop first 512 bytes, verify new size, write as .sfc, remove old.
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stripped=0; errors=0
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while IFS= read -r -d '' f; do
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s=$(stat -c %s "$f")
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base="${f%.*}"; target="$base.sfc"; tmp="$f.hl.tmp"
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tail -c +513 "$f" > "$tmp"
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ns=$(stat -c %s "$tmp")
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if [ "$ns" -ne $((s - 512)) ]; then
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echo "SIZE MISMATCH, skipped: $f ($s -> $ns)"; rm -f "$tmp"; errors=$((errors+1)); continue
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fi
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if [ "$target" != "$f" ] && [ -e "$target" ]; then target="$base (headerless).sfc"; fi
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mv -f "$tmp" "$target"
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[ "$target" != "$f" ] && rm -f "$f"
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stripped=$((stripped+1))
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done < "$list"
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rm -f "$list"
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# Verify none remain.
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left=0
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for f in *.smc *.sfc *.fig *.swc; do
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[ -f "$f" ] || continue
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s=$(stat -c %s "$f")
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[ $((s % 1024)) -eq 512 ] && left=$((left+1))
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done
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echo "RESULT stripped=$stripped errors=$errors remaining_headered=$left"
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