From 923f8f45a32edef8b812948f9fe15b84634575c5 Mon Sep 17 00:00:00 2001
From: "B. Watson" <yalhcru@gmail.com>
Date: Thu, 30 Apr 2020 00:46:38 -0400
Subject: bchunkmulti: extract bin/cue CD images with multiple bin files

---
 bchunkmulti | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100755 bchunkmulti

diff --git a/bchunkmulti b/bchunkmulti
new file mode 100755
index 0000000..a5dce5d
--- /dev/null
+++ b/bchunkmulti
@@ -0,0 +1,131 @@
+#!/bin/sh
+
+
+SELF="$( basename $0 )"
+VERSION="0.1"
+
+usage() {
+  cat <<EOF
+Usage: $SELF [-o[N]] -f [bchunk-options] cue-file.cue [basename]
+
+bchunkmulti v$VERSION, by B. Watson (yalhcru@gmail.com).
+
+Licensed under the WTFPL: Do WTF you want with this. See
+http://www.wtfpl.net/txt/copying/ for details.
+
+This is a wrapper script for bchunk, to munge it into supporting
+bin/cue files with multiple .bin files (one per track, usually).
+
+We split up each FILE entry in the .cue file into a its own .cue,
+then run bchunk once for each of the .cues we just made.
+
+Options:
+
+  -o         Convert audio tracks to ogg, with quality 7. Requires oggenc.
+  -oN        As -o, but uses quality N, which must be a number from 0 to 9.
+             See the -q option in the oggenc(1) man page.
+  -f         Convert audio tracks to flac. Requires flac.
+  -k         Keep .wav file after converting to ogg/flac. Normally it's
+             deleted.
+  --         Everything after this is treated as a filename. Useful if
+             your .cue filename begins with a -.
+  --help     Shows this help.
+  --version  Shows version number.
+
+Any other options passed to this script will be passed to bchunk.
+
+$SELF also works fine on bin/cue files with only one .bin file.
+EOF
+}
+
+while true; do
+  case "$1" in
+    --version) echo $VERSION ; exit 0 ;;
+    --help)    usage ; exit 0 ;;
+    -o)        OGGQ=7 ;;
+    -o[-0-9]*) OGGQ="$( echo $1 | cut -b3 )" ;;
+    -f)        FLAC=1 ;;
+    -k)        KEEPWAV=1 ;;
+    --)        break ;;
+    -*)        bchunkopts="$bchunkopts $1" ;;
+    *)         break ;;
+  esac
+  shift
+done
+
+[ -n "$OGGQ$FLAC" ] && bchunkopts="$bchunkopts -w"
+
+cue_in="$1"
+if [ -z "$cue_in" ]; then
+  echo "$SELF: no .cue file argument given, try $SELF --help" 1>&2
+  exit 1
+fi
+
+base="${2:-track}"
+
+if [ -n "$3" ]; then
+  echo "$SELF: too many filenames on command line, try $SELF --help" 1>&2
+  exit 1
+fi
+
+# de-space-ify args
+bchunkopts=$( echo $bchunkopts )
+
+# check that the cue file at least exists and can be read
+cat "$cue_in" >/dev/null || exit $?
+
+# need this to let "read" read the initial spaces in the .cue file lines
+IFS=""
+
+# save old stdout
+exec 3>&1
+
+# use temp dir in the current dir (we're writing there anyway)
+tmpdir="$( mktemp -d bcm.XXXXXX )"
+[ -z "$tmpdir" ] && exit $?
+
+# split up each track entry in the input .cue file into a separate .cue
+# file containing only that track.
+count=1
+cat "$cue_in" | while read line; do
+  case "$line" in
+    FILE*) cue_out="$tmpdir/tmpcue$( printf '%02d' $count ).cue"
+           exec > "$cue_out"
+           count="$( expr $count + 1 )"
+           ;;
+  esac
+  echo "$line"
+done
+
+# restore old stdout
+exec 1>&3
+
+# now convert each file to .iso or .wav (bchunk is smart enough
+# to know which is which).
+for cue_out in $tmpdir/tmpcue??.cue; do
+  binfile="$( head -1 "$cue_out" | cut -d\" -f2 )"
+  tracktmp="$tmpdir/tmp"
+
+  # brand new empty dir for bchunk to write to, will contain only
+  # one file after bchunk runs.
+  rm -rf "$tracktmp"
+  mkdir -p "$tracktmp"
+
+  bchunk $bchunkopts "$binfile" "$cue_out" "$tracktmp"/"$base"
+
+  if grep -q 'TRACK.*AUDIO' "$cue_out"; then
+    # got audio track, convert to ogg and/or flac if requested
+    if [ -n "$OGGQ$FLAC" ]; then
+      [ -n "$OGGQ" ] && oggenc -q"$OGGQ" "$tracktmp"/*.wav
+      [ -n "$FLAC" ] && flac "$tracktmp"/*.wav
+      [ -z "$KEEPWAV" ] && rm -f "$tracktmp"/*.wav
+    fi
+  fi
+
+  mv "$tracktmp"/* .
+
+  rm -rf "$cue_out" "$tracktmp"
+done
+
+rmdir "$tmpdir"
+exit 0
-- 
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