Note
mimansajaiswal: write me a small app that takes in text like this:
"mimansajaiswal: write notation-fold.ts similar to notion-highlight.ts where if a region is marked to be collapsed, it allows you to collapse it and expand it similar to code folding in ides. this is how it works with multiple lines in code highlight: Use [!code highlight] to highlight a line. ts console.log('Not highlighted') console.log('Highlighted') // [!code highlight] console.log('Not highlighted')
Renders (with custom CSS rules): console.log('Not highlighted') console.log('Highlighted') console.log('Not highlighted') // [!code highlight] outputs: The outer
tag is modified:You can also highlight multiple lines with a single comment:ts // [!code highlight:3] console.log('Highlighted') console.log('Highlighted') console.log('Not highlighted')
Renders: console.log('Highlighted') console.log('Highlighted') console.log('Not highlighted')"and adds > [!NOTE] on top and then adds >{space} to every line. it should preserve new lines.
Claude: --- Text Processing Script:
interface TextProcessor {
process(text: string): string;
}
class NoteFoldProcessor implements TextProcessor {
process(text: string): string {
// Split the text into lines while preserving empty lines
const lines = text.split(/\r?\n/);
// Add the note header as the first line
const processedLines = ['> [!NOTE]'];
// Process each line
lines.forEach((line, index) => {
// Skip empty lines at the start
if (index === 0 && line.trim() === '') {
return;
}
// For empty lines, just add a '>' to preserve spacing
if (line.trim() === '') {
processedLines.push('>');
} else {
// Add '> ' prefix to non-empty lines
processedLines.push(`> ${line}`);
}
});
// Join the lines back together with newlines
return processedLines.join('\n');
}
}
// Example usage:
const processor = new NoteFoldProcessor();
const inputText = `mimansajaiswal: write notation-fold.ts similar to notion-highlight.ts where if a region is marked to be collapsed, it allows you to collapse it and expand it similar to code folding in ides.
this is how it works with multiple lines in code highlight:
Use [!code highlight] to highlight a line.
\`\`\`ts
console.log('Not highlighted')
console.log('Highlighted') // [!code highlight]
console.log('Not highlighted')
\`\`\``;
console.log(processor.process(inputText));
I've created a TypeScript script that processes text according to your requirements. Here's what it does:
- Takes any input text
- Adds '> [!NOTE]' at the top
- Adds '> ' to every line
- Preserves all newlines and spacing
- Handles empty lines by adding just '>' to maintain spacing
To use it, you can:
- Create a new instance of the processor
- Pass your text to the
process()
method - Get back the formatted text
The code uses TypeScript interfaces and classes for better maintainability and type safety. Would you like me to modify anything about how it processes the text?
Note
mimansajaiswal: no but can you make it as a webapp that i can run here?
Claude: I'll create a simple React web app with a text input and output display.
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const processText = (text: string): string => {
const lines = text.split(/\r?\n/);
const processedLines = ['> [!NOTE]'];
lines.forEach((line, index) => {
if (index === 0 && line.trim() === '') {
return;
}
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
return processedLines.join('\n');
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = async () => {
try {
await navigator.clipboard.writeText(output);
} catch (err) {
console.error('Failed to copy text:', err);
}
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
<Clipboard className="w-4 h-4" />
Copy
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've created a web app that:
- Has a large text input area where you can paste your text
- Includes a "Process Text" button to transform the text
- Shows the processed output in a pre-formatted area
- Has a copy button to easily copy the processed text to your clipboard
- Uses shadcn/ui components for a clean, modern look
- Preserves all formatting and newlines
- Is responsive and works well on all screen sizes
You can:
- Paste your text in the input area
- Click "Process Text"
- See the result in the output area
- Copy the result with the copy button
Would you like me to modify anything about the interface or processing logic?
Note
mimansajaiswal: the copy button doesn't seem to work, the output is correct
Claude: Let me fix the copy button functionality. The issue might be related to how we're handling the clipboard API.
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard, Check } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const [copied, setCopied] = useState(false);
const processText = (text: string): string => {
const lines = text.split(/\r?\n/);
const processedLines = ['> [!NOTE]'];
lines.forEach((line, index) => {
if (index === 0 && line.trim() === '') {
return;
}
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
return processedLines.join('\n');
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = () => {
const textArea = document.createElement('textarea');
textArea.value = output;
document.body.appendChild(textArea);
textArea.select();
try {
document.execCommand('copy');
setCopied(true);
setTimeout(() => setCopied(false), 2000); // Reset after 2 seconds
} catch (err) {
console.error('Failed to copy text:', err);
}
document.body.removeChild(textArea);
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
{copied ? (
<>
<Check className="w-4 h-4" />
Copied!
</>
) : (
<>
<Clipboard className="w-4 h-4" />
Copy
</>
)}
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've made several improvements to the copy functionality:
- Switched to using
document.execCommand('copy')
which has better browser compatibility - Added a visual feedback when copying is successful (the button changes to a checkmark and "Copied!")
- The copied state resets after 2 seconds
- Used a temporary textarea element to handle the copying, which is more reliable for preserving formatting
The copy button should now work reliably across different browsers. Let me know if you'd like any other adjustments to the functionality!
Note
mimansajaiswal: now here is the thing, say i paste something like this:
mimansajaiswal: now it is not processed at all -- look at basic.js.output.html
this is the output of basic.js see how no class is added.
GitHub Copilot: Ah, I see the issue - the regex pattern in file.ts
isn't matching correctly. Let's fix that:
file.ts
The issue is with the regex pattern - 'fold:\\d+'
is too strict. We need to allow the colon pattern similar to other notations:
i want it to this text processing wherever it finds a text i have defined, in this case "mimansajaiswal" uptil the line that has "GitHub Copilot: "
Claude: I'll modify the text processor to handle the specific case of extracting text between "mimansajaiswal:" and "GitHub Copilot:".
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard, Check } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const [copied, setCopied] = useState(false);
const processText = (text: string): string => {
// Find the start and end indices
const startMarker = "mimansajaiswal:";
const endMarker = "GitHub Copilot:";
const startIndex = text.indexOf(startMarker);
const endIndex = text.indexOf(endMarker);
if (startIndex === -1 || endIndex === -1) {
return "Could not find the required markers in the text.";
}
// Extract the text between markers
const relevantText = text.substring(
startIndex + startMarker.length,
endIndex
).trim();
// Process the extracted text
const lines = relevantText.split(/\r?\n/);
const processedLines = ['> [!NOTE]'];
lines.forEach((line) => {
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
return processedLines.join('\n');
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = () => {
const textArea = document.createElement('textarea');
textArea.value = output;
document.body.appendChild(textArea);
textArea.select();
try {
document.execCommand('copy');
setCopied(true);
setTimeout(() => setCopied(false), 2000);
} catch (err) {
console.error('Failed to copy text:', err);
}
document.body.removeChild(textArea);
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
{copied ? (
<>
<Check className="w-4 h-4" />
Copied!
</>
) : (
<>
<Clipboard className="w-4 h-4" />
Copy
</>
)}
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've updated the processor to:
- Look for text between "mimansajaiswal:" and "GitHub Copilot:"
- Extract only that portion of the text
- Process it with the note formatting (adding "> [!NOTE]" and "> " to each line)
- Show an error message if the markers aren't found
Now when you paste your text, it will:
- Find the section starting with "mimansajaiswal:"
- Extract everything until it sees "GitHub Copilot:"
- Format just that extracted portion with the note syntax
Try it out and let me know if you'd like any adjustments to how it processes the text!
Note
mimansajaiswal: there can be multiple such sections btw
Claude: Ah, I'll modify the processor to handle multiple sections!
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard, Check } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const [copied, setCopied] = useState(false);
const processText = (text: string): string => {
const startMarker = "mimansajaiswal:";
const endMarker = "GitHub Copilot:";
let currentIndex = 0;
const segments = [];
while (true) {
// Find next start marker
const startIndex = text.indexOf(startMarker, currentIndex);
if (startIndex === -1) break;
// Find next end marker after this start
const endIndex = text.indexOf(endMarker, startIndex);
if (endIndex === -1) break;
// Extract the text between markers
const relevantText = text.substring(
startIndex + startMarker.length,
endIndex
).trim();
// Process this segment
const lines = relevantText.split(/\r?\n/);
const processedLines = ['> [!NOTE]'];
lines.forEach((line) => {
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
segments.push(processedLines.join('\n'));
// Move to position after this end marker
currentIndex = endIndex + endMarker.length;
}
if (segments.length === 0) {
return "Could not find any sections with the required markers in the text.";
}
// Join all processed segments with double newlines between them
return segments.join('\n\n');
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = () => {
const textArea = document.createElement('textarea');
textArea.value = output;
document.body.appendChild(textArea);
textArea.select();
try {
document.execCommand('copy');
setCopied(true);
setTimeout(() => setCopied(false), 2000);
} catch (err) {
console.error('Failed to copy text:', err);
}
document.body.removeChild(textArea);
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
{copied ? (
<>
<Check className="w-4 h-4" />
Copied!
</>
) : (
<>
<Clipboard className="w-4 h-4" />
Copy
</>
)}
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've updated the processor to:
- Find all sections between "mimansajaiswal:" and "GitHub Copilot:"
- Process each section independently
- Join all processed sections with double newlines between them
- Handle cases where there are no sections found
The processor now:
- Starts looking for the first pair of markers
- Processes that section
- Continues looking for more sections from where it left off
- Repeats until it can't find any more sections
- Combines all the processed sections together
Try pasting text with multiple sections and let me know if you'd like any adjustments to how it handles them!
Note
mimansajaiswal: why did we remove mimansajaiswal:? i want to keep that. make these 3 changes: 1. add a text area to define the two boundaries (so that it can accept new lines) 2. do not remove non-matching content, just keep it as is without processing 3. do not remove matched content
Claude: I'll modify the app to keep all content and add input fields for the boundaries.
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard, Check } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const [copied, setCopied] = useState(false);
const [startMarker, setStartMarker] = useState('mimansajaiswal:');
const [endMarker, setEndMarker] = useState('GitHub Copilot:');
const processText = (text: string): string => {
let result = '';
let currentIndex = 0;
while (true) {
// Find next start marker
const startIndex = text.indexOf(startMarker, currentIndex);
if (startIndex === -1) {
// Add remaining text and break
result += text.substring(currentIndex);
break;
}
// Add text before the start marker
result += text.substring(currentIndex, startIndex);
// Find next end marker after this start
const endIndex = text.indexOf(endMarker, startIndex);
if (endIndex === -1) {
// Add remaining text and break if no end marker found
result += text.substring(startIndex);
break;
}
// Extract the section to be processed
const sectionToProcess = text.substring(startIndex, endIndex);
const lines = sectionToProcess.split(/\r?\n/);
// Process the lines
const processedLines = ['> [!NOTE]'];
lines.forEach((line) => {
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
// Add the processed section
result += processedLines.join('\n');
// Move to position after this end marker
currentIndex = endIndex;
}
return result;
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = () => {
const textArea = document.createElement('textarea');
textArea.value = output;
document.body.appendChild(textArea);
textArea.select();
try {
document.execCommand('copy');
setCopied(true);
setTimeout(() => setCopied(false), 2000);
} catch (err) {
console.error('Failed to copy text:', err);
}
document.body.removeChild(textArea);
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div className="grid grid-cols-2 gap-4 mb-4">
<div>
<label className="block text-sm font-medium mb-2">Start Marker:</label>
<textarea
value={startMarker}
onChange={(e) => setStartMarker(e.target.value)}
className="w-full h-20 p-2 border rounded-md"
placeholder="Enter start marker..."
/>
</div>
<div>
<label className="block text-sm font-medium mb-2">End Marker:</label>
<textarea
value={endMarker}
onChange={(e) => setEndMarker(e.target.value)}
className="w-full h-20 p-2 border rounded-md"
placeholder="Enter end marker..."
/>
</div>
</div>
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
{copied ? (
<>
<Check className="w-4 h-4" />
Copied!
</>
) : (
<>
<Clipboard className="w-4 h-4" />
Copy
</>
)}
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've made all the requested changes:
- Added two text areas at the top to define the start and end markers, which support multi-line markers
- Modified the processing logic to:
- Keep all non-matching content unchanged
- Keep the original markers in the output
- Only add the note formatting to the sections between markers
- The processed output now contains:
- All original text
- Original markers
- Note formatting only for matched sections
The default markers are still set to "mimansajaiswal:" and "GitHub Copilot:", but you can change them in the text areas at the top.
Try it out and let me know if you'd like any adjustments to how it works!
Note
mimansajaiswal: pretty good, the last thing, i want to match newline+GitHub Copilot:
so that i do not end up with > on the new line just before github copilot. why is the end marker not taking the new line into consideration in text area?
Copy
> [!NOTE]
> mimansajaiswal: and then based off the test suite, add test cases in a new folder maybe for this functionality with appropriate css and stuff
>
GitHub Copilot: I'll help create test cases for the fold functionality following the same pattern as the other test suites. Here's what we need to add:
Claude: Ah, I see the issue. We need to handle the newline character properly in both the text area and the processing logic.
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard, Check } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const [copied, setCopied] = useState(false);
const [startMarker, setStartMarker] = useState('mimansajaiswal:');
const [endMarker, setEndMarker] = useState('\nGitHub Copilot:');
const processText = (text: string): string => {
let result = '';
let currentIndex = 0;
while (true) {
// Find next start marker
const startIndex = text.indexOf(startMarker, currentIndex);
if (startIndex === -1) {
// Add remaining text and break
result += text.substring(currentIndex);
break;
}
// Add text before the start marker
result += text.substring(currentIndex, startIndex);
// Find next end marker after this start
const endIndex = text.indexOf(endMarker, startIndex);
if (endIndex === -1) {
// Add remaining text and break if no end marker found
result += text.substring(startIndex);
break;
}
// Extract the section to be processed
const sectionToProcess = text.substring(startIndex, endIndex);
const lines = sectionToProcess.split(/\r?\n/);
// Process the lines
const processedLines = ['> [!NOTE]'];
lines.forEach((line) => {
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
// Add the processed section
result += processedLines.join('\n');
// Move to position after start of end marker (after the newline)
currentIndex = endIndex + 1; // +1 to keep the newline character
}
return result;
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = () => {
const textArea = document.createElement('textarea');
textArea.value = output;
document.body.appendChild(textArea);
textArea.select();
try {
document.execCommand('copy');
setCopied(true);
setTimeout(() => setCopied(false), 2000);
} catch (err) {
console.error('Failed to copy text:', err);
}
document.body.removeChild(textArea);
};
// Helper function to display newlines in a readable way
const displayMarker = (marker: string) => {
return marker.replace(/\n/g, '\\n');
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div className="grid grid-cols-2 gap-4 mb-4">
<div>
<label className="block text-sm font-medium mb-2">Start Marker:</label>
<textarea
value={displayMarker(startMarker)}
onChange={(e) => setStartMarker(e.target.value.replace(/\\n/g, '\n'))}
className="w-full h-20 p-2 border rounded-md font-mono text-sm"
placeholder="Enter start marker..."
/>
</div>
<div>
<label className="block text-sm font-medium mb-2">End Marker:</label>
<textarea
value={displayMarker(endMarker)}
onChange={(e) => setEndMarker(e.target.value.replace(/\\n/g, '\n'))}
className="w-full h-20 p-2 border rounded-md font-mono text-sm"
placeholder="Enter end marker..."
/>
</div>
</div>
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
{copied ? (
<>
<Check className="w-4 h-4" />
Copied!
</>
) : (
<>
<Clipboard className="w-4 h-4" />
Copy
</>
)}
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've made several improvements:
- Set the default end marker to
\nGitHub Copilot:
to properly match newlines - Added visual representation of newlines in the marker text areas using
\n
- Added proper handling of newline characters in the processing logic
- Used a monospace font for the marker text areas to make special characters more visible
- Fixed the index handling to properly preserve newlines in the output
- Added helper functions to display and parse newline characters in the UI
Now when you process text, it should:
- Properly handle the newline before "GitHub Copilot:"
- Not add an extra ">" before the end marker
- Show the newline characters clearly in the UI with
\n
Try it out and let me know if you need any adjustments!
Note
mimansajaiswal: now it creates this weird : but what i wanted was to keep the new line and not add > to it
Copy
> console.log('Highlighted')
> console.log('Not highlighted')
>GitHub Copilot: I'll help you create a similar transformer for code folding. Here's how we'll implement it:
Claude: Ah, I understand now - you want to preserve the newline without adding the ">" prefix. Let me fix that.
Text Processing Web App:
import React, { useState } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Clipboard, Check } from 'lucide-react';
const TextProcessor = () => {
const [input, setInput] = useState('');
const [output, setOutput] = useState('');
const [copied, setCopied] = useState(false);
const [startMarker, setStartMarker] = useState('mimansajaiswal:');
const [endMarker, setEndMarker] = useState('\nGitHub Copilot:');
const processText = (text: string): string => {
let result = '';
let currentIndex = 0;
while (true) {
// Find next start marker
const startIndex = text.indexOf(startMarker, currentIndex);
if (startIndex === -1) {
// Add remaining text and break
result += text.substring(currentIndex);
break;
}
// Add text before the start marker
result += text.substring(currentIndex, startIndex);
// Find next end marker after this start
const endIndex = text.indexOf(endMarker, startIndex);
if (endIndex === -1) {
// Add remaining text and break if no end marker found
result += text.substring(startIndex);
break;
}
// Extract the section to be processed
const sectionToProcess = text.substring(startIndex, endIndex);
const lines = sectionToProcess.split(/\r?\n/);
// Process the lines
const processedLines = ['> [!NOTE]'];
lines.forEach((line) => {
if (line.trim() === '') {
processedLines.push('>');
} else {
processedLines.push(`> ${line}`);
}
});
// Add the processed section without the last '>'
result += processedLines.join('\n');
// Add the end marker including its newline
result += text.substring(endIndex, endIndex + endMarker.length + text.substring(endIndex + endMarker.length).indexOf('\n') + 1);
// Move to position after end marker's line
currentIndex = endIndex + endMarker.length + text.substring(endIndex + endMarker.length).indexOf('\n') + 1;
if (text.substring(endIndex + endMarker.length).indexOf('\n') === -1) {
// If there's no more newline, move to the end of text
currentIndex = text.length;
}
}
return result;
};
const handleProcess = () => {
setOutput(processText(input));
};
const copyToClipboard = () => {
const textArea = document.createElement('textarea');
textArea.value = output;
document.body.appendChild(textArea);
textArea.select();
try {
document.execCommand('copy');
setCopied(true);
setTimeout(() => setCopied(false), 2000);
} catch (err) {
console.error('Failed to copy text:', err);
}
document.body.removeChild(textArea);
};
// Helper function to display newlines in a readable way
const displayMarker = (marker: string) => {
return marker.replace(/\n/g, '\\n');
};
return (
<div className="w-full max-w-4xl mx-auto p-4">
<Card>
<CardHeader>
<CardTitle>Text Processor</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div className="grid grid-cols-2 gap-4 mb-4">
<div>
<label className="block text-sm font-medium mb-2">Start Marker:</label>
<textarea
value={displayMarker(startMarker)}
onChange={(e) => setStartMarker(e.target.value.replace(/\\n/g, '\n'))}
className="w-full h-20 p-2 border rounded-md font-mono text-sm"
placeholder="Enter start marker..."
/>
</div>
<div>
<label className="block text-sm font-medium mb-2">End Marker:</label>
<textarea
value={displayMarker(endMarker)}
onChange={(e) => setEndMarker(e.target.value.replace(/\\n/g, '\n'))}
className="w-full h-20 p-2 border rounded-md font-mono text-sm"
placeholder="Enter end marker..."
/>
</div>
</div>
<div>
<label className="block text-sm font-medium mb-2">Input Text:</label>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="w-full h-48 p-2 border rounded-md"
placeholder="Paste your text here..."
/>
</div>
<Button
onClick={handleProcess}
className="w-full"
>
Process Text
</Button>
{output && (
<div>
<div className="flex justify-between items-center mb-2">
<label className="block text-sm font-medium">Output:</label>
<Button
variant="outline"
size="sm"
onClick={copyToClipboard}
className="flex items-center gap-2"
>
{copied ? (
<>
<Check className="w-4 h-4" />
Copied!
</>
) : (
<>
<Clipboard className="w-4 h-4" />
Copy
</>
)}
</Button>
</div>
<pre className="w-full h-48 p-2 border rounded-md overflow-auto bg-gray-50 whitespace-pre-wrap">
{output}
</pre>
</div>
)}
</CardContent>
</Card>
</div>
);
};
export default TextProcessor;
I've updated the processor to:
- Preserve the entire end marker line without adding ">" prefix
- Keep the newline before "GitHub Copilot:" intact
- Handle the transition between processed and unprocessed text more cleanly
Now it should produce output exactly as you showed in your example, with the newline preserved and no ">" added to the GitHub Copilot line. Try it out and let me know if it's working as expected!