slack-message-parser/script/parser.js

Parser for Slack message

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Node_js_1 = require("./types/Node.js");
const combinator_js_1 = require("./combinator.js");
const parseBold = (0, combinator_js_1.explicit)((0, combinator_js_1.regexp)(/^\*(\S([^*\n]*?|[^*\n]*? `.*?` )[^\s*]|\S)\*(?=[\s~!#$%^)\-+={}[\];:'",.?/]|$)/, (match, _text, position, parseText) => {
    const [matchedText, content] = match;
    return [
        {
            type: Node_js_1.NodeType.Bold,
            children: parseText(content),
            source: matchedText,
        },
        position + matchedText.length,
    ];
}));
const parseCode = (0, combinator_js_1.explicit)((0, combinator_js_1.regexp)(/^`([^`]+?)`(?=[\s.,\])}!?\-=]|$)/, (match, _text, position) => {
    const [matchedText, content] = match;
    return [
        {
            type: Node_js_1.NodeType.Code,
            text: content,
            source: matchedText,
        },
        position + matchedText.length,
    ];
}));
const parsePreText = (0, combinator_js_1.explicit)((0, combinator_js_1.regexp)(/^```(\s*\S[\s\S]*?\s*)```(?=[\s.,\])}!?\-=]|$)/, (match, _text, position) => {
    const [matchedText, content] = match;
    return [
        {
            type: Node_js_1.NodeType.PreText,
            text: content,
            source: matchedText,
        },
        position + matchedText.length,
    ];
}));
const parseItalic = (0, combinator_js_1.explicit)((0, combinator_js_1.regexp)(/^_(\S([^_\n]*?|[^_\n]*? `.*?` )\S|\S)\_(?=[\s.,\])}!?\-=]|$)/, (match, _text, position, parseText) => {
    const [matchedText, content] = match;
    return [
        {
            type: Node_js_1.NodeType.Italic,
            children: parseText(content),
            source: matchedText,
        },
        position + matchedText.length,
    ];
}));
const parseStrike = (0, combinator_js_1.explicit)((0, combinator_js_1.regexp)(/^~(\S([^~\n]*?|[^~\n]*? `.*?` )\S|\S)\~(?=[\s.,\])}!?\-=]|$)/, (match, _text, position, parseText) => {
    const [matchedText, content] = match;
    return [
        {
            type: Node_js_1.NodeType.Strike,
            children: parseText(content),
            source: matchedText,
        },
        position + matchedText.length,
    ];
}));
const parseQuoteLine = (0, combinator_js_1.topOfLine)((0, combinator_js_1.regexp)(/^>(.*)(\n>|\n|$)/, (match, _text, position, parseText) => {
    const [matchedText, content] = match;
    const repeatedGt = content.match(/^((>)+)(.*)$/);
    // If the next line is also starts with ">", do not include the character
    // (simulating RegExp's non-capturing group)
    const source = matchedText.replace(/\n>$/, "\n");
    // `source` and `matchedText` are same unless the next line starts with ">"
    // due to the above line removes the ">".
    const isNextLineStartsWithGt = source !== matchedText;
    return [
        {
            type: Node_js_1.NodeType.Quote,
            children: repeatedGt
                ? [
                    {
                        type: Node_js_1.NodeType.Text,
                        text: repeatedGt[1],
                        source: repeatedGt[1],
                    },
                    ...parseText(repeatedGt[3]),
                ]
                // Only the last LF could be a terminator character of quote.
                // Non-last LFs should be parsed as well as `content`.
                : parseText(isNextLineStartsWithGt ? content + "\n" : content),
            source,
        },
        position + source.length,
    ];
}));
const parseQuote = (0, combinator_js_1.or)([
    (0, combinator_js_1.topOfLine)((0, combinator_js_1.regexp)(/^>>>([\s\S]+)$/, (match, _text, position, parseText) => {
        const [matchedText, content] = match;
        return [
            {
                type: Node_js_1.NodeType.Quote,
                children: parseText(content),
                source: matchedText,
            },
            position + matchedText.length,
        ];
    })),
    (0, combinator_js_1.oneOrMore)(parseQuoteLine, (quotes) => {
        return {
            type: Node_js_1.NodeType.Quote,
            children: quotes.map((quote) => quote.children).flat(),
            source: quotes.map((quote) => quote.source).join(""),
        };
    }),
]);
const parseEmoji = (0, combinator_js_1.regexp)(/^:([^:<`*#@!\s()$%]+):(:(skin-tone-.+?):)?/, (match, _text, position) => {
    const [matchedText, name, _, variation] = match;
    return [
        {
            type: Node_js_1.NodeType.Emoji,
            name,
            variation,
            source: matchedText,
        },
        position + matchedText.length,
    ];
});
const parseLink = (0, combinator_js_1.regexp)(/^<([^\s<>][^\n<>]*?)(\|([^<>]+?))?>/, (match, _text, position, parseText) => {
    const [matchedText, link, _, label] = match;
    const nextPosition = position + matchedText.length;
    const labelNodes = label ? parseText(label) : undefined;
    switch (link.charAt(0)) {
        case "@":
            return [
                {
                    type: Node_js_1.NodeType.UserLink,
                    userID: link.slice(1),
                    label: labelNodes,
                    source: matchedText,
                },
                nextPosition,
            ];
        case "#":
            return [
                {
                    type: Node_js_1.NodeType.ChannelLink,
                    channelID: link.slice(1),
                    label: labelNodes,
                    source: matchedText,
                },
                nextPosition,
            ];
        case "!": {
            const [commandName, ...args] = link.slice(1).split("^");
            return [
                {
                    type: Node_js_1.NodeType.Command,
                    name: commandName,
                    arguments: args,
                    label: labelNodes,
                    source: matchedText,
                },
                nextPosition,
            ];
        }
        default:
            return [
                {
                    type: Node_js_1.NodeType.URL,
                    url: link,
                    label: labelNodes,
                    source: matchedText,
                },
                nextPosition,
            ];
    }
});
exports.default = (0, combinator_js_1.or)([
    parseBold,
    parsePreText,
    parseCode,
    parseEmoji,
    parseItalic,
    parseQuote,
    parseLink,
    parseStrike,
]);