Files
obsidian-excalidraw-plugin/src/Utils.ts
2021-08-28 15:56:45 +02:00

90 lines
3.4 KiB
TypeScript

import { normalizePath, TAbstractFile, TFolder, Vault } from "obsidian";
import { Random } from "roughjs/bin/math";
/**
* Splits a full path including a folderpath and a filename into separate folderpath and filename components
* @param filepath
*/
export function splitFolderAndFilename(filepath: string):{folderpath: string, filename: string} {
let folderpath: string, filename:string;
const lastIndex = filepath.lastIndexOf("/");
return {
folderpath: normalizePath(filepath.substr(0,lastIndex)),
filename: lastIndex==-1 ? filepath : filepath.substr(lastIndex+1),
};
}
/**
* Download data as file from Obsidian, to store on local device
* @param encoding
* @param data
* @param filename
*/
export function download(encoding:string,data:any,filename:string) {
let element = document.createElement('a');
element.setAttribute('href', (encoding ? encoding + ',' : '') + data);
element.setAttribute('download', filename);
element.style.display = 'none';
document.body.appendChild(element);
element.click();
document.body.removeChild(element);
}
/**
* Generates the image filename based on the excalidraw filename
* @param excalidrawPath - Full filepath of ExclidrawFile
* @param newExtension - extension of IMG file in ".extension" format
* @returns
*/
export function getIMGPathFromExcalidrawFile (excalidrawPath:string,newExtension:string):string {
const isLegacyFile:boolean = excalidrawPath.endsWith(".excalidraw");
const replaceExtension:string = isLegacyFile ? ".excalidraw" : ".md";
return excalidrawPath.substring(0,excalidrawPath.lastIndexOf(replaceExtension)) + newExtension;
}
/**
* Create new file, if file already exists find first unique filename by adding a number to the end of the filename
* @param filename
* @param folderpath
* @returns
*/
export function getNewUniqueFilepath(vault:Vault, filename:string, folderpath:string):string {
let fname = normalizePath(folderpath +'/'+ filename);
let file:TAbstractFile = vault.getAbstractFileByPath(fname);
let i = 0;
while(file) {
fname = normalizePath(folderpath + '/' + filename.slice(0,filename.lastIndexOf("."))+"_"+i+filename.slice(filename.lastIndexOf(".")));
i++;
file = vault.getAbstractFileByPath(fname);
}
return fname;
}
/**
* Open or create a folderpath if it does not exist
* @param folderpath
*/
export async function checkAndCreateFolder(vault:Vault,folderpath:string) {
folderpath = normalizePath(folderpath);
let folder = vault.getAbstractFileByPath(folderpath);
if(folder && folder instanceof TFolder) return;
await vault.createFolder(folderpath);
}
let random = new Random(Date.now());
export const randomInteger = () => Math.floor(random.next() * 2 ** 31);
//https://macromates.com/blog/2006/wrapping-text-with-regular-expressions/
export function wrapText(text:string, lineLen:number):string {
if(!lineLen) return text;
let outstring = "";
// 1 2
const reg = new RegExp(`(.{1,${lineLen}})(\\s+|$\\n?)|([^\\s]+)(\\s+|$\\n?)`,'gm');
const res = text.matchAll(reg);
let parts;
while(!(parts = res.next()).done) {
outstring += parts.value[1] ? parts.value[1].trimEnd() : parts.value[3].trimEnd();
outstring += (parts.value[2]=='\n' || parts.value[4]=='\n') ?'\n\n':'\n';
}
return outstring.trimEnd();
}