fix utf-8 tags

encode_dir

@@ -0,0 +1,90 @@
+#!/bin/bash
+# encode_all encodes the whole library into specified format
+#
+ulimit -n "$(ulimit -Hn)"
+. env_parallel.bash
+
+function ts() {
+  date '+%Y-%m-%d_%H:%M'
+}
+
+debug_only=false
+# debug_only=true
+src_dir="$1"
+export output_dir="$2"
+if [[ -z "$src_dir" || -z "$output_dir" ]]; then
+  printf 'Usage:\nencode_dir <input dir> <output dir>\n' >&2
+  exit 1
+fi
+
+logdir="${HOME}/encoding_logs"
+[[ -d "$logdir" ]] || mkdir "$logdir"
+start_ts="$(ts)"
+log="${logdir}/${start_ts}_encoding_log"
+fixes="${logdir}/${start_ts}_fixes.sh"
+temp_dir="$(mktemp -d)"
+
+printf '#!/bin/bash\n# FIXES generated by library_works/encode_all\n\n' > "$fixes"
+
+function encode() {
+  src_file_and_path="$1"
+  src_file="$(basename "$in_file_path")"
+  # file is full original path + filename
+  src_dir="$(dirname "$src_file_and_path")"
+  file_name="$(basename "$src_file_and_path")"
+  final_opus="${output_dir}/$(sed -e 's/\.flac$/.opus/' <<< "$file_name")"
+
+  unset tags
+  unset dest_dir
+
+  declare -A tags
+  while read -r line; do
+    tag_type="$(cut -d= -f1 <<< "$line")"
+    tag_type="${tag_type^^}"
+    tag_val="$(cut -d= -f2- <<< "$line")"
+    # TODO: suggest fixes for lower case tags
+    tags["$tag_type"]="$tag_val"
+  done < <(metaflac --list --block-type='VORBIS_COMMENT' "$src_file_and_path" | \
+           grep 'comment\[' | \
+           cut -d: -f2- | \
+           sed 's/^ //')
+
+  tag_ensure=( 'TRACKNUMBER' 'TITLE' 'ALBUM' 'ARTIST' 'YEAR')
+  for tag_type in "${tag_ensure[@]}"; do
+    if [[ -z "${tags["$tag_type"]}" ]]; then
+      printf '%s is missing tag: %s\n' "$src_file_and_path" "$tag_type" >> "$log"
+      tags["$tag_type"]="missing $tag_type"
+    fi
+  done
+
+  [[ -d "$output_dir" ]] || mkdir -p "$output_dir"
+  tag_flags=(
+      '--title' "${tags['TITLE']}"
+      '--artist' "${tags['ARTIST']}"
+      '--album' "${tags['ALBUM']}"
+      '--tracknumber' "${tags['TRACKNUMBER']}"
+      '--date' "${tags['DATE']}")
+  [[ -n "${tags[DISK]}" ]] && tag_flags+=('--comment' "DISK=${tags['DISK']}")
+  tags=''
+  for tag in "${tag_flags[@]}"; do
+    tags+="$(printf '"%s" ' "$tag")"
+  done
+  cmd=$(printf 'opusenc --downmix-mono --bitrate 48 --speech --quiet --discard-comments --discard-pictures %s "%s" "%s"\n' "$tags" "$src_file_and_path" "$final_opus")
+  printf '%s\n' "$cmd"
+  eval $cmd
+
+  if [[ -n "$err" ]]; then
+    printf '%s\n' "$err" >> "$log"
+  fi
+}
+
+echo starting processing
+# find "$src_dir" -type f -name '*.flac' | while read line; do encode "${line}"; done
+# exit 1
+# find "$src_dir" -type f -name '*.flac' | while read line; do encode "$line"; done
+# wait
+find "$src_dir" -type f -name '*.flac' -print0 | env_parallel -P 0 -0 --bar encode {}
+echo done processing
+
+echo deleting any empty directories
+# find "$output_dir" -empty -type d -delete