metadata scripts

quiethost/metadata_read_by_from_file.sh

@@ -0,0 +1,87 @@
+#!/bin/bash
+
+DRY_RUN=false
+DELETE=false
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --dry-run)
+            DRY_RUN=true
+            shift
+            ;;
+        --delete)
+            DELETE=true
+            shift
+            ;;
+        *)
+            break
+            ;;
+    esac
+done
+
+if [[ $# -ne 1 ]]; then
+    echo "Usage: $0 [--dry-run] [--delete] file.txt"
+    exit 1
+fi
+
+list="$1"
+
+while IFS= read -r file; do
+
+    [[ -z "$file" ]] && continue
+
+    if [[ ! -e "$file" ]]; then
+        echo "ERROR: Missing file: $file"
+        exit 1
+    fi
+    if [[ -d "$file" ]]; then
+        echo "WARNING: Is a directory, skipping: $file"
+        continue
+    fi
+    # Get comment from ID3v2
+    comment=$(kid3-cli "$file" \
+        -c "tag 2" \
+        -c "get comment" 2>/dev/null)
+
+    [[ -z "$comment" ]] && continue
+
+    echo
+    echo "File: $file"
+    echo "Comment: $comment"
+
+    composer=""
+
+    # Match: read by Name; text
+    if [[ "$comment" =~ ^[Rr]ead[[:space:]]+[Bb]y[[:space:]]+([^;]+)\; ]]; then
+        composer="${BASH_REMATCH[1]}"
+        composer="$(echo "$composer" | sed 's/[[:space:]]*$//')"
+
+        echo "Found narrator: $composer"
+
+        if $DRY_RUN; then
+            echo "DRY RUN: set composer '$composer', delete comment"
+        else
+            kid3-cli "$file" \
+                -c "tag 2" \
+                -c "set composer '$composer'" \
+                -c "set comment ''" \
+                -c save
+        fi
+
+    elif [[ ${#comment} -lt 40 ]]; then
+
+        echo "Short comment (${#comment} chars): $comment"
+
+        if $DELETE; then
+            if $DRY_RUN; then
+                echo "DRY RUN: delete comment"
+            else
+                kid3-cli "$file" \
+                    -c "tag 2" \
+                    -c "set comment ''" \
+                    -c save
+            fi
+        fi
+    fi
+
+done < "$list"