Localization constants generator.

kassandra.sh (Outdated)

#!/bin/bash
#
#  Copyright (C) 2019 MadAppGang Pty Ltd
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in all
#  copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#  SOFTWARE.
#

set -e

for FILE in "$@"; do
    case $FILE in
        *.strings)
            STRINGS_FILE=$FILE;;
        *.stringsdict)
            DICT_FILE=$FILE;;
        *.swift)
            OUTPUT_FILE=$FILE;;
        *)
            echo "Unexpected file type: $FILE"
            exit 1;;
    esac
done

PARSED=()

PARSE_STRINGS_FILE() {
    if [ ! -e "$STRINGS_FILE" ]; then
        return 0
    fi

    local RESULT=$(grep -Eoi "\".+\"[ ]*=[ ]*\".+\";" $STRINGS_FILE) # Finds localization key-values pairs.
    RESULT=${RESULT//[$'\n'$'\t'\" ]/} # Removes newlines, quotations and spaces.
    
    local ITEMS=()
    IFS=';' read -ra ITEMS <<< "$RESULT" # Makes array from search result string.
    unset IFS
    ITEMS=("${ITEMS[@]//=*/}") # Remove value from key-value pair of match.

    PARSED=("${PARSED[@]}" "${ITEMS[@]}")

    return 0
}

PARSE_DICT_FILE() {
    if [ ! -e "$DICT_FILE" ]; then
        return 0
    fi
    
    local RESULT=$(<$DICT_FILE)
    RESULT=${RESULT//[$'\n'$'\t' ]/}
    RESULT=${RESULT#*<dict>}
    RESULT=${RESULT/\<\/dict\>\<\/plist\>/}
    RESULT=$(echo "$RESULT" | perl -pe 's/<dict><key>.*?<\/dict><\/dict>//g')
    RESULT=$(echo "$RESULT" | perl -pe 's/<\/key><key>/;/g')
    RESULT=$(echo "$RESULT" | perl -pe 's/<(\/)?key>//g')

    local ITEMS=()
    IFS=';' read -ra ITEMS <<< "$RESULT" # Makes array from search result string.
    unset IFS

    PARSED=("${PARSED[@]}" "${ITEMS[@]}")

    return 0
}

MAKE_SPACING() {
    local DEPTH=$1
    local STEP="    "

    local SPACING=""
    for (( I=0; I<$DEPTH; I++ )); do
        SPACING="$STEP$SPACING"
    done
    echo "$SPACING"
}

HANDLE_KEYWORD() {
    case $1 in
        "continue"|"switch"|"default"|"static"|"final"|"class"|"struct"|"import"|"extension"|"return"|"try"|"let"|"break"|"case"|"super"|"private"|"public"|"internal"|"guard"|"self"|"while"|"do"|"catch"|"as"|"true"|"false"|"override"|"lazy"|"get"|"set")
            echo "\`$1\`";;
        *)
            echo $1;;
    esac
}

LOWERCASE_FIRST_LETTER() {
    echo "$(tr '[:upper:]' '[:lower:]' <<< ${1:0:1})${1:1}"
}

MAKE_PARAMETER_SWIFT_TYPE() {
    case $1 in
        *%@)
            echo "String";;
        *%d)
            echo "Int";;
        *)
            echo "Unexpected parameter type: $1"
            exit 1;;
    esac
}

MAKE_ENTRY() {
    local ENTRY=$1
    local KEY=$2
    local DEPTH=$3

    local SPACING=$(MAKE_SPACING $DEPTH)
    local NAME=$(LOWERCASE_FIRST_LETTER $ENTRY)
    NAME=${NAME//%[@d]/}
    NAME=$(HANDLE_KEYWORD $NAME)

    local PARAMETERS=$(echo $ENTRY | grep -Eo "[A-Z]*[a-z0-9]*%[@d]")
    PARAMETERS=${PARAMETERS//[$'\n']/;}
    IFS=';' read -ra PARAMETERS <<< "$PARAMETERS"
    unset IFS
    
    local PARAMETERS_LENGTH=${#PARAMETERS[@]}

    if [ $PARAMETERS_LENGTH -eq 0 ]; then
        echo "${SPACING}static let $NAME = \"$KEY\".localized()"
    else
        local INPUT_ARGS=""
        local OUTPUT_ARGS=""
        for (( I=0; I<$PARAMETERS_LENGTH; I++ )); do
            local PARAMETER=$(LOWERCASE_FIRST_LETTER ${PARAMETERS[$I]})
            local TYPE=$(MAKE_PARAMETER_SWIFT_TYPE $PARAMETER)
            PARAMETER=${PARAMETER//%[@d]/}

            INPUT_ARGS="${INPUT_ARGS}$PARAMETER: $TYPE"
            OUTPUT_ARGS="${OUTPUT_ARGS}$(HANDLE_KEYWORD $PARAMETER)"

            if [ $I -lt $(expr $PARAMETERS_LENGTH - 1) ]; then
                INPUT_ARGS="$INPUT_ARGS, "
                OUTPUT_ARGS="${OUTPUT_ARGS}, "
            fi
        done

        local KEY_SPACING=$(MAKE_SPACING $DEPTH+1)
        echo "${SPACING}static func $NAME($INPUT_ARGS) -> String {\n${KEY_SPACING}return \"$KEY\".localized(arguments: $OUTPUT_ARGS)\n${SPACING}}"
    fi
}

MAKE_ENTRIES() {
    local DEPTH=$1

    local HIERARCHY=()
    local HIERARCHY_DEPTH=0

    for KEY in "${PARSED[@]}"; do
        local COMPONENTS=()
        IFS='.' read -ra COMPONENTS <<< "$KEY"
        unset IFS

        local LENGTH=${#COMPONENTS[@]}
        local NEW_HIERARCHY_DEPTH=$(expr $LENGTH - 1)
        local NEW_HIERARCHY=(${COMPONENTS[@]:0:$NEW_HIERARCHY_DEPTH})
        local ENTRY=${COMPONENTS[$NEW_HIERARCHY_DEPTH]}

        local MAX_COMMON_HIERARCHY_DEPTH=$(( $NEW_HIERARCHY_DEPTH<$HIERARCHY_DEPTH ? $NEW_HIERARCHY_DEPTH : $HIERARCHY_DEPTH ))
        local COMMON_HIERARCHY_DEPTH=0
        for (( I=0; I<$MAX_COMMON_HIERARCHY_DEPTH; I++ )); do
            if [[ "${HIERARCHY[$I]}" == "${NEW_HIERARCHY[$I]}" ]]; then
                COMMON_HIERARCHY_DEPTH=$(expr $COMMON_HIERARCHY_DEPTH + 1)
            else
                break
            fi    
        done
        
        local BRACKETS_TO_CLOSE=$(expr $HIERARCHY_DEPTH - $COMMON_HIERARCHY_DEPTH)
        for (( I=$HIERARCHY_DEPTH-1; I>=$COMMON_HIERARCHY_DEPTH; I-- )); do
            local SPACING=$(MAKE_SPACING $(expr $I + $DEPTH))
            echo "${SPACING}}"
        done

        for (( I=$COMMON_HIERARCHY_DEPTH; I<$NEW_HIERARCHY_DEPTH; ++I )); do
            local SPACING=$(MAKE_SPACING $(expr $I + $DEPTH))
            echo "${SPACING}enum ${COMPONENTS[$I]} {"
        done

        local ENTRY_DEPTH=$(expr $NEW_HIERARCHY_DEPTH + $DEPTH)
        echo "$(MAKE_ENTRY $ENTRY $KEY $ENTRY_DEPTH)"

        HIERARCHY=("${NEW_HIERARCHY[@]}")
        HIERARCHY_DEPTH=$NEW_HIERARCHY_DEPTH
    done

    for (( I=$HIERARCHY_DEPTH-1; I>=0; I-- )); do
        local SPACING=$(MAKE_SPACING $(expr $I + $DEPTH))
        echo "${SPACING}}"
    done
}

PARSE_STRINGS_FILE
PARSE_DICT_FILE

IFS=$'\n' PARSED=($(sort <<< "${PARSED[*]}")) # Sorts array of source keys.
unset IFS

echo "//
// This file is generated by Kassandra - localization constants generator.
//
// If you have any issues or just want to say thanks, contact Dmytro ([email protected]).
//

import Foundation

enum Localizable {
$(MAKE_ENTRIES 1)
}

extension String {

    public func localized(arguments: CVarArg..., comment: String = \"\") -> String {
        if arguments.isEmpty {
            return NSLocalizedString(self, comment: comment)
        } else {
            return withVaList(arguments) { arguments -> String in
                let format = NSLocalizedString(self, comment: comment)
                return NSString(format: format, arguments: arguments) as String
            }
        }
    }

}" > $OUTPUT_FILE