Download: Add Disabled, Originals, MediaRaw & MediaSidecar Flags #2234

Extends DownloadSettings with 4 additional options:
- Name: File name pattern for downloaded files (existed)
- Disabled: Disables downloads
- Originals: Only download files stored in "originals" folder
- MediaRaw: Include RAW image files
- MediaSidecar: Include metadata sidecar files (JSON, XMP, YAML)

pkg/clean/sql.go

@@ -0,0 +1,53 @@
+package clean
+
+// SqlSpecial checks if the byte must be escaped/omitted in SQL.
+func SqlSpecial(b byte) (special bool, omit bool) {
+	if b < 32 {
+		return true, true
+	}
+
+	switch b {
+	case '"', '\'', '\\':
+		return true, false
+	default:
+		return false, false
+	}
+}
+
+// SqlString escapes a string for use in an SQL query.
+func SqlString(s string) string {
+	var i int
+	for i = 0; i < len(s); i++ {
+		if found, _ := SqlSpecial(s[i]); found {
+			break
+		}
+	}
+
+	// Return if no special characters were found.
+	if i >= len(s) {
+		return s
+	}
+
+	b := make([]byte, 2*len(s)-i)
+
+	copy(b, s[:i])
+
+	j := i
+
+	for ; i < len(s); i++ {
+		if special, omit := SqlSpecial(s[i]); omit {
+			// Omit control characters.
+			continue
+		} else if special {
+			// Escape other special characters.
+			// see https://mariadb.com/kb/en/string-literals/
+			b[j] = s[i]
+			j++
+		}
+
+		b[j] = s[i]
+		j++
+	}
+
+	return string(b[:j])
+}