cvcbulkcreate

#!/bin/bash
################################################################################
# Loading configuration
################################################################################

CVCINTERNAL_SCRIPTROOT=$(dirname "$0")
source "${CVCINTERNAL_SCRIPTROOT}/config"

################################################################################
# Documentation
################################################################################

# Return code reference
# 1     Syntax error in invocation
# 2     Missing argument
# 3     Target directory does not exist
# 16    Internal error

# Show usage
function usage {
    echo "This script runs cvccommit for all the audio files of a directory, thus"
    echo "allowing to quickly create CVC files for whole albums."
    echo ""
    echo "Usage: cvcbulkcreate [-f] [-h] [-t <template>] [-v] <directory>"
    echo ""
    echo "Options:"
    echo "-f            Overwrite current cvc file."
    echo "-h            Show this message."
    echo "-t <template> The name of the CVC template to use, without the .cvt extension."
    echo "              CVC templates are used to prestage CVC files with static or"
    echo "              dynamic content".
    echo "-v            Verbose mode."
    echo ""
    echo "<directory>   A directory containing audio files."
}

################################################################################
# Option and argument parsing
################################################################################

# Default settings
extraArgs=""

# Calling option parser
while getopts ":fht:v" option; do
    case "${option}" in
        # -f: Force mode
        f)
            extraArgs+="-f "
            ;;

        # -h: Help
        h)
            usage
            exit
            ;;

        # -t: CVC template
        t)
            extraArgs+="-t ${OPTARG}"
            ;;

        # -v: Verbose mode
        v)
            VERBOSE=1
            extraArgs+="-v "
            ;;

        # Syntax error
        \?)
            >&2 echo "ERROR: Invalid option: -${OPTARG}"
            usage
            [[ "${BASH_SOURCE[0]}" != "${0}" ]] && return 1 || exit 1
            ;;

        # Syntax error
        :)
            >&2 echo "ERROR: Option -${OPTARG} requires an argument."
            usage
            [[ "${BASH_SOURCE[0]}" != "${0}" ]] && return 1 || exit 1
            ;;

        # Any other value is an internal error
        *)
            >&2 echo "ERROR: Internal getopts error."
            [[ "${BASH_SOURCE[0]}" != "${0}" ]] && return 16 || exit 16
            ;;
    esac
done

shift $((OPTIND-1))

# Checking whether a directory was supplied as an argument.
if [ -z "$1" ]
then
    >&2 echo "ERROR: No directory specified."
    usage
    [[ "${BASH_SOURCE[0]}" != "${0}" ]] && return 2 || exit 2
fi

################################################################################
# Additional checks
################################################################################

# Abstracting supplied arguments. We remove the trailing /
targetDirectory="${1%/}"

# Checking whether the supplied directory does exist
if [ ! -d "${targetDirectory}" ]
then
    >&2 echo "ERROR: Directory '${targetDirectory}' does not exist."
    [[ "${BASH_SOURCE[0]}" != "${0}" ]] && return 3 || exit 3
fi

################################################################################
# Detecting tracklist properties
################################################################################

# Detect the total number of discs, the total number of tracks per disc,
# and the total number of tracks.

################################################################################
# Creating CVC files
################################################################################

# Initializing file counter
fileCount=0

for audioFile in "${targetDirectory}/"*.${CFG_FileExtensions_Audio}
do
    ((fileCount+=1))
    [ "${VERBOSE}" ] && echo "Processing file #${fileCount}: ${audioFile}..."

    # Setting up useful variables
    audioFileBasename=$(basename "${audioFile}" ".${CFG_FileExtensions_Audio}")

    # Detecting disk number
    discNumberPrefix=$(echo "${audioFileBasename}" | grep -oE "^[0-9]?[0-9]-")
    if [ "${discNumberPrefix}" ]
    then
        discNumber="${discNumberPrefix%-}"
        [ "${VERBOSE}" ] && echo "Detected disc number: ${discNumber}."
    else
        discNumber=1
        [ "${VERBOSE}" ] && echo "Detected disc number: None. Assuming ${discNumber}."
    fi

    # Detecting track number
    trackNumberPrefix=$(echo "${audioFileBasename#${discNumberPrefix}}" | grep -oE "^[0-9]?[0-9]")
    if [ "${trackNumberPrefix}" ]
    then
        trackNumber="${trackNumberPrefix}"
        [ "${VERBOSE}" ] && echo "Detected track number: ${trackNumber}."
    else
        [ "${VERBOSE}" ] && echo "Detected disc number: None. Assuming none."
    fi

    # Calling cvccreate
    "${CFG_CVCTools_CVCCreate}" ${extraArgs} "${audioFile}"
done