todo/excelMacroSimplifier.html at main · himitsuconfidential/todo · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Excel Macro Simplifier</title>
    <style>
        body {
            background-color: lightblue;
            margin: 10vh;

        }
        p{
            border-style: solid;
            border-width: 3px;
            border-color: silver;
            background-color: lightcyan;
            padding: 10px;
            border-radius: 4px;
            width: 80vw;
        }
        pre{
            margin: 0
        }
        button{
            font-size:16px;
            margin:10px;
            height:30px;
            width:200px;
            border-radius: 4px;

            color: white;
            background:navy;
            cursor: pointer;
            border: none
        }
        button:hover{
            background-color: blue;
        }
        textarea{
            font-size:16px;
            overflow: auto;
            resize: vertical;
            height: 300px;
            width: 80vw;
            max-height: 700px;
            min-height: 200px;
            border-radius: 4px;
            padding: 10px;
        }
    </style>
</head>
<body>
    <div class="container">
        <header>
            <h1>Excel Macro Simplifier</h1>
        </header>

        <div class="content">
            <div class="panel">
                <h2>Input Macro</h2>
                <textarea id="inputMacro" placeholder="Paste your recorded Excel VBA macro here..."></textarea>
            </div>

            <div class="button-container">
                <button class="btn-simplify" onclick="simplifyMacro()">Simplify Macro</button>
                <button class="btn-copy" onclick="copyOutput()">Copy Output</button>
            </div>
            <div class="panel">
                <h2>Simplified Output</h2>
                <textarea id="outputMacro" readonly placeholder="Simplified macro will appear here..."></textarea>
            </div>

            <div class="info">
                <p class="subtitle">Remove unnecessary actions and make your VBA code cleaner</p>
                <h3>What gets removed:</h3>
                <ul>
                    <li>Unnecessary <code>Range().Select</code> and <code>Selection</code> statements</li>
                    <li><code>ActiveCell</code> references when direct assignment is possible</li>
                    <li><code>Application.CutCopyMode</code> changes</li>
                    <li><code>ActiveWindow.Zoom</code> changes</li>
                    <li><code>ActiveWindow.SmallScroll</code> and <code>ActiveWindow.LargeScroll</code> actions</li>
                    <li>Range selections that aren't used in subsequent operations</li>
                </ul>
            </div>
        </div>
    </div>

    <script>
        function simplifyMacro() {
            const input = document.getElementById('inputMacro').value;
            const output = document.getElementById('outputMacro');

            if (!input.trim()) {
                alert('Please paste a macro first!');
                return;
            }

            const simplified = processVBACode(input);
            output.value = simplified;
        }

        function processVBACode(code) {
            // First, combine lines that end with continuation character "_"
            const rawLines = code.split('\n');
            const combinedLines = [];
            let i = 0;

            while (i < rawLines.length) {
                let currentLine = rawLines[i];

                // Check if line ends with continuation character
                while (i < rawLines.length - 1 && currentLine.trimEnd().endsWith('_')) {
                    // Remove the trailing _ and whitespace, then append next line
                    currentLine = currentLine.trimEnd().slice(0, -1).trimEnd() + ' ' + rawLines[i + 1].trim();
                    i++;
                }

                combinedLines.push(currentLine);
                i++;
            }

            const lines = combinedLines;
            const result = [];
            i = 0;
            let baseRange = null; // The initial range (e.g., "B5")
            let endChain = []; // Chain of .End() calls
            let isRangeExpansion = false; // Whether we're building a Range(x, y) expansion
            let rangeEndChain = []; // Chain for the second part of Range(Selection, Selection.End()...)

            while (i < lines.length) {
                const line = lines[i];
                const trimmed = line.trim();

                // Keep Sub declarations, empty lines, comments, End With, and property lines inside With blocks
                if (trimmed.startsWith('Sub ') || trimmed.startsWith('End Sub') || trimmed === '' ||
                    trimmed.startsWith("'") || trimmed === 'End With' || trimmed.startsWith('.')) {
                    result.push(line);
                    i++;
                    continue;
                }

                // Skip useless actions
                if (isUselessAction(trimmed)) {
                    i++;
                    continue;
                }

                // Handle Range().Select - this sets the base range
                if (trimmed.match(/^Range\([^)]+\)\.Select$/)) {
                    const rangeMatch = trimmed.match(/^Range\(([^)]+)\)\.Select$/);
                    if (rangeMatch) {
                        baseRange = rangeMatch[1];
                        endChain = [];
                        isRangeExpansion = false;
                        rangeEndChain = [];
                    }
                    i++;
                    continue;
                }

                // Handle Selection.End(xlDirection).Select - accumulates End() calls
                if (trimmed.match(/^Selection\.End\(xl(Up|Down|ToLeft|ToRight)\)\.Select$/)) {
                    const direction = trimmed.match(/^Selection\.End\((xl(?:Up|Down|ToLeft|ToRight))\)\.Select$/)[1];
                    if (baseRange) {
                        endChain.push(direction);
                    }
                    i++;
                    continue;
                }

                // Handle Range(Selection, Selection.End(xlDirection)).Select - range expansion
                if (trimmed.match(/^Range\(Selection,\s*Selection\.End\(xl(Up|Down|ToLeft|ToRight)\)\)\.Select$/)) {
                    const direction = trimmed.match(/^Range\(Selection,\s*Selection\.End\((xl(?:Up|Down|ToLeft|ToRight))\)\)\.Select$/)[1];
                    if (baseRange) {
                        isRangeExpansion = true;
                        rangeEndChain.push(direction);
                    }
                    i++;
                    continue;
                }

                // Handle With Selection blocks
                if (baseRange && trimmed.startsWith('With Selection')) {
                    const simplifiedEndChain = simplifyDirections(endChain);
                    const simplifiedRangeEndChain = simplifyDirections(rangeEndChain);

                    let finalRange;
                    if (isRangeExpansion && simplifiedRangeEndChain.length > 0) {
                        let endPart = baseRange;
                        for (const dir of simplifiedRangeEndChain) {
                            endPart = `${endPart}.End(${dir})`;
                        }
                        finalRange = `Range(${baseRange}, ${endPart})`;
                    } else if (isRangeExpansion && simplifiedRangeEndChain.length === 0) {
                        finalRange = `Range(${baseRange})`;
                    } else {
                        finalRange = `Range(${baseRange})`;
                    }

                    const replacement = trimmed.replace('With Selection', `With ${finalRange}`);
                    result.push(line.replace(trimmed, replacement));
                    i++;
                    continue;
                }

                // Now we hit an actual operation - build the final range expression
                if (baseRange && (trimmed.startsWith('ActiveCell.') || trimmed.startsWith('Selection.') || trimmed.startsWith('ActiveSheet.'))) {
                    // Simplify opposite directions that cancel out
                    const simplifiedEndChain = simplifyDirections(endChain);
                    const simplifiedRangeEndChain = simplifyDirections(rangeEndChain);

                    let finalRange;
                    let needsValidation = false;

                    if (isRangeExpansion && simplifiedRangeEndChain.length > 0) {
                        // Build Range(base, base.End()...) format
                        let endPart = baseRange;
                        for (const dir of simplifiedRangeEndChain) {
                            endPart = `${endPart}.End(${dir})`;
                        }
                        finalRange = `Range(${baseRange}, ${endPart})`;
                        needsValidation = true;
                    } else if (isRangeExpansion && simplifiedRangeEndChain.length === 0) {
                        // Directions cancelled out completely
                        finalRange = `Range(${baseRange})`;
                        needsValidation = true;
                    } else if (simplifiedEndChain.length > 0) {
                        // Build base.End()...End().Select format - keep as selection
                        let rangeExpr = `Range(${baseRange})`;
                        for (const dir of simplifiedEndChain) {
                            rangeExpr += `.End(${dir})`;
                        }
                        // Output the Select statement before operations
                        result.push(line.replace(trimmed, `${rangeExpr}.Select`));

                        // Reset and process current line as ActiveCell operation
                        baseRange = null;
                        endChain = [];
                        isRangeExpansion = false;
                        rangeEndChain = [];

                        // Keep the current operation line as-is
                        result.push(line);
                        i++;
                        continue;
                    } else {
                        // Simple range reference
                        finalRange = `Range(${baseRange})`;
                    }

                    // Replace the operation
                    let outputLine = '';
                    if (trimmed.startsWith('ActiveCell.FormulaR1C1')) {
                        const value = trimmed.match(/ActiveCell\.FormulaR1C1\s*=\s*(.+)/);
                        if (value) {
                            outputLine = line.replace(trimmed, `${finalRange}.FormulaR1C1 = ${value[1]}`);
                        }
                    } else if (trimmed.startsWith('Selection.FormulaR1C1')) {
                        const value = trimmed.match(/Selection\.FormulaR1C1\s*=\s*(.+)/);
                        if (value) {
                            outputLine = line.replace(trimmed, `${finalRange}.FormulaR1C1 = ${value[1]}`);
                        }
                    } else if (trimmed.startsWith('Selection.NumberFormat')) {
                        const value = trimmed.match(/Selection\.NumberFormat\s*=\s*(.+)/);
                        if (value) {
                            outputLine = line.replace(trimmed, `${finalRange}.NumberFormat = ${value[1]}`);
                        }
                    } else if (trimmed === 'Selection.Copy') {
                        outputLine = line.replace(trimmed, `${finalRange}.Copy`);
                    } else if (trimmed === 'Selection.Paste' || trimmed === 'ActiveSheet.Paste') {
                        outputLine = line.replace(trimmed, `${finalRange}.Paste`);
                    } else if (trimmed === 'Selection.FillDown') {
                        outputLine = line.replace(trimmed, `${finalRange}.FillDown`);
                    } else if (trimmed.startsWith('Selection')) {
                        const params = trimmed.substring('Selection'.length);
                        outputLine = line.replace(trimmed, `${finalRange}${params}`);
                    } else {
                        outputLine = line;
                    }

                    // Add validation comment if needed
                    if (needsValidation && outputLine) {
                        outputLine = outputLine + " 'please validate the range used";
                    }

                    if (outputLine) {
                        result.push(outputLine);
                    }

                    i++;
                    continue;
                }

                // Handle standalone ActiveSheet.Paste without active range (skip it)
                if (trimmed === 'ActiveSheet.Paste') {
                    i++;
                    continue;
                }

                // Keep other lines
                if (trimmed.length > 0) {
                    result.push(line);
                }

                i++;
            }

            return result.join('\n');
        }

        // Simplify direction chains by canceling opposite directions
        function simplifyDirections(directions) {
            const opposites = {
                'xlUp': 'xlDown',
                'xlDown': 'xlUp',
                'xlToLeft': 'xlToRight',
                'xlToRight': 'xlToLeft'
            };

            const result = [];
            for (const dir of directions) {
                const lastDir = result[result.length - 1];
                if (lastDir && opposites[lastDir] === dir) {
                    // Cancel out opposite directions
                    result.pop();
                } else {
                    result.push(dir);
                }
            }
            return result;
        }

        function isUselessAction(line) {
            const uselessPatterns = [
                /^Application\.CutCopyMode/,
                /^ActiveWindow\.Zoom/,
                /^ActiveWindow\.SmallScroll/,
                /^ActiveWindow\.LargeScroll/,
            ];

            return uselessPatterns.some(pattern => pattern.test(line));
        }

        function copyOutput() {
            const output = document.getElementById('outputMacro');
            if (!output.value.trim()) {
                alert('Nothing to copy! Simplify a macro first.');
                return;
            }

            output.select();
            document.execCommand('copy');
            alert('Copied to clipboard!');
        }

    </script>
</body>
</html>