ph-dev-tools/src/resolve/pathResolver.ts

Development Tools for PHibernate

import {EntityCandidate} from "../parser/EntityCandidate";
/**
 * Created by Papa on 4/27/2016.
 */

export function resolveRelativeEntityPath(
	from:EntityCandidate, //
	to:EntityCandidate //
):string {
	return resolveRelativePath(from.path, to.path);
}

export function resolveRelativePath(
	fromPath:string, //
	toPath:string //
):string {
	fromPath = normalizePath(fromPath);
	toPath = normalizePath(toPath);

	let fromFragments = fromPath.split('/');
	let toFragments = toPath.split('/');
	let numCommonFragments = 0;
	for(let i = 0; i < fromFragments.length; i++) {
		let fromFragment = fromFragments[i];
		let toFragment = toFragments[i];
		if(fromFragment !== toFragment) {
			break;
		}
		numCommonFragments = i + 1;
	}

	let numFromPathDiffDirectories = fromFragments.length - numCommonFragments - 1;
	let toPathDiffNodes = toFragments.slice(numCommonFragments);

	let relativePath = '';
	if(numFromPathDiffDirectories == 0) {
		relativePath = './';
	} else {
		for(let i = 0; i < numFromPathDiffDirectories; i++) {
			relativePath += '../';
		}
	}
	for(let i = 0; i < toPathDiffNodes.length; i++) {
		relativePath += toPathDiffNodes[i];
		if(i < toPathDiffNodes.length - 1) {
			relativePath += '/';
		}
	}

	return relativePath;
}

export function normalizePath(
	path:string
):string {
	let forwardSlashedPath = path.replace(/\\/g, '/');
	let lowercasePath = forwardSlashedPath.toLowerCase();

	return lowercasePath;
}