markdown-editor-mcp
Version:
MCP server for markdown editing and management
78 lines (77 loc) • 2.17 kB
JavaScript
/**
* Detect the line ending style used in a file - Optimized version
* This algorithm uses early termination for maximum performance
*/
export function detectLineEnding(content) {
for (let i = 0; i < content.length; i++) {
if (content[i] === '\r') {
if (i + 1 < content.length && content[i + 1] === '\n') {
return '\r\n';
}
return '\r';
}
if (content[i] === '\n') {
return '\n';
}
}
// Default to system line ending if no line endings found
return process.platform === 'win32' ? '\r\n' : '\n';
}
/**
* Normalize line endings to match the target style
*/
export function normalizeLineEndings(text, targetLineEnding) {
// First normalize to LF
let normalized = text.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
// Then convert to target
if (targetLineEnding === '\r\n') {
return normalized.replace(/\n/g, '\r\n');
}
else if (targetLineEnding === '\r') {
return normalized.replace(/\n/g, '\r');
}
return normalized;
}
/**
* Analyze line ending usage in content
*/
export function analyzeLineEndings(content) {
let crlfCount = 0;
let lfCount = 0;
let crCount = 0;
// Count line endings
for (let i = 0; i < content.length; i++) {
if (content[i] === '\r') {
if (i + 1 < content.length && content[i + 1] === '\n') {
crlfCount++;
i++; // Skip the LF
}
else {
crCount++;
}
}
else if (content[i] === '\n') {
lfCount++;
}
}
// Determine predominant style
const total = crlfCount + lfCount + crCount;
let style;
if (crlfCount > lfCount && crlfCount > crCount) {
style = '\r\n';
}
else if (lfCount > crCount) {
style = '\n';
}
else {
style = '\r';
}
// Check for mixed line endings
const usedStyles = [crlfCount > 0, lfCount > 0, crCount > 0].filter(Boolean).length;
const hasMixed = usedStyles > 1;
return {
style,
count: total,
hasMixed
};
}