ucbuilder/global/openCloser.ts

For Developing Applications with multiple form/usercontrols etc.. In Single BrowserWindow...

interface OpenCloseCharNode {
    openingChar: string,
    closingChar: string,
}
export class openCloser {
    ignoreList: OpenCloseCharNode[] = [];

    doTask(
        openTxt: string,
        closeTxt: string,
        contents: string,
        callback: (
            outText: string,
            inText: string,
            txtCount: number
        ) => void = (outText, inText, txtCount) => { }
    ): string {
        let opened = 0,
            closed = 0;
        let rtrn = "";
        let lastoutIndex = 0,
            lastinIndex = 0;
        let iList = this.ignoreList;
        if (iList.length == 0) {
            for (let index = 0, len = contents.length; index < len; index++) {
                let cnt = contents.charAt(index);
                if (opened == closed && index > 0 && opened > 0) {
                    let selector = contents.substring(lastoutIndex, lastinIndex);
                    let cssStyle = contents.substring(lastinIndex + 1, index - 1);
                    rtrn += callback(selector, cssStyle, opened);
                    lastoutIndex = index;
                    opened = closed = 0;
                }
                switch (cnt) {
                    case openTxt:
                        if (opened == 0) lastinIndex = index;
                        opened++;
                        break;
                    case closeTxt:
                        closed++;
                        break;
                }
            }
        } else {
            let charNode: OpenCloseCharNode;
            let state: "pause" | "resume" = "resume";
            for (let index = 0, len = contents.length; index < len; index++) {
                let cnt = contents.charAt(index);
                switch (state) {
                    case "resume":
                        if (opened == closed && index > 0 && opened > 0) {
                            let selector = contents.substring(lastoutIndex, lastinIndex);
                            let cssStyle = contents.substring(lastinIndex + 1, index - 1);
                            rtrn += callback(selector, cssStyle, opened);
                            lastoutIndex = index;
                            opened = closed = 0;
                        }
                        switch (cnt) {
                            case openTxt:
                                if (opened == 0) lastinIndex = index;
                                opened++;
                                break;
                            case closeTxt:
                                closed++;
                                break;
                            default:
                                charNode = iList.find((s) => s.openingChar === cnt);
                                if (charNode != undefined) state = "pause";
                                break;
                        }
                        break;
                    case "pause":
                        if (cnt === charNode.closingChar) state = "resume";
                        break;
                }
            }
        }
        return rtrn;
    }
}