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import { ImageCollector } from 'src/imageCollector';
import { CommentParser } from '../comment';
import { ObsidianUtils } from '../obsidianUtils';
export class ImageProcessor {
private utils: ObsidianUtils;
private parser: CommentParser;
private markdownImageRegex = /^[ ]{0,3}!\[([^\]]*)\]\((.*(?:jpg|png|jpeg|gif|bmp|webp|svg)?)\)\s?(<!--.*-->)?/gim;
private obsidianImageRegex = /!\[\[(.*?(?:jpg|png|jpeg|gif|bmp|webp|svg))\s*\|?\s*([^\]]*)??\]\]\s?(<!--.*-->)?/ig;
private obsidianImageReferenceRegex = /\[\[(.*?(?:jpg|png|jpeg|webp|gif|bmp|svg))\|?([^\]]*)??\]\]/gi;
constructor(utils: ObsidianUtils) {
this.utils = utils;
this.parser = new CommentParser();
}
process(markdown: string) {
return markdown
.split('\n')
.map(line => {
// Transform ![[myImage.png]] to 
if (this.obsidianImageRegex.test(line)) {
return this.transformImageString(line);
}
// Transform referenced images to absolute paths (ex. in bg annotation)
if (this.obsidianImageReferenceRegex.test(line)) {
return this.transformImageReferenceString(line);
}
return line;
})
.map(line => {
// Transform  to html
if (this.markdownImageRegex.test(line)) {
return this.htmlify(line);
} else {
return line;
}
})
.join('\n');
}
transformImageReferenceString(line: string): string {
let result = line;
let m;
this.obsidianImageReferenceRegex.lastIndex = 0;
while ((m = this.obsidianImageReferenceRegex.exec(result)) !== null) {
Iif (m.index === this.obsidianImageReferenceRegex.lastIndex) {
this.obsidianImageReferenceRegex.lastIndex++;
}
const [match, image] = m;
const filePath = this.utils.findFile(image);
result = result.replaceAll(match, filePath);
}
return result;
}
private transformImageString(line: string) {
let result = "";
let m;
this.obsidianImageRegex.lastIndex = 0;
while ((m = this.obsidianImageRegex.exec(line)) !== null) {
Iif (m.index === this.obsidianImageRegex.lastIndex) {
this.obsidianImageRegex.lastIndex++;
}
const [, image, ext, comment] = m;
const filePath = this.utils.findFile(image);
const commentAsString = this.buildComment(ext, comment) ?? '';
result = result + `\n ${commentAsString}`;
}
return result;
}
private buildComment(ext: string, commentAsString: string) {
const comment = commentAsString ? this.parser.parseComment(commentAsString) : this.parser.buildComment('element');
if (ext) {
if (ext.includes('x')) {
var [width, height] = ext.split('x');
} else {
var width = ext;
}
comment.addStyle('width', `${width}px`);
if (height) {
comment.addStyle('height', `${height}px`);
}
}
return this.parser.commentToString(comment);
}
private htmlify(line: string) {
let result = "";
let m;
this.markdownImageRegex.lastIndex = 0;
while ((m = this.markdownImageRegex.exec(line)) !== null) {
Iif (m.index === this.markdownImageRegex.lastIndex) {
this.markdownImageRegex.lastIndex++;
}
// eslint-disable-next-line prefer-const
let [, alt, filePath, commentString] = m;
Iif (alt && alt.includes('|')) {
commentString = this.buildComment(alt.split('|')[1], commentString) ?? '';
}
const comment = this.parser.parseLine(commentString) ?? this.parser.buildComment('element');
const isIcon = this.isIcon(filePath);
Iif (result.length > 0) {
result = result + '\n';
}
if (isIcon) {
result = result + `<i class="${filePath}" ${this.parser.buildAttributes(comment)}></i>`;
} else {
Iif (ImageCollector.getInstance().shouldCollect()) {
ImageCollector.getInstance().addImage(filePath);
}
if (filePath.startsWith('file:/')) {
filePath = this.transformAbsoluteFilePath(filePath);
}
if (comment.hasStyle('width')) {
comment.addStyle('object-fit', 'fill');
}
if (!comment.hasStyle('align-self')) {
Iif (comment.hasAttribute('align')) {
const align = comment.getAttribute('align');
switch (align) {
case 'left':
comment.addStyle('align-self', 'start');
break;
case 'right':
comment.addStyle('align-self', 'end');
break;
case 'center':
comment.addStyle('align-self', 'center');
break;
case 'stretch':
comment.addStyle('align-self', 'stretch');
comment.addStyle('object-fit', 'cover');
comment.addStyle('height', '100%');
comment.addStyle('width', '100%');
break;
default:
break;
}
comment.deleteAttribute('align');
}
}
if (!comment.hasStyle('object-fit')) {
comment.addStyle('object-fit', 'scale-down');
}
const imageHtml = `<img src="${filePath}" alt="${alt}" ${this.parser.buildAttributes(comment)}>`;
result = result + imageHtml;
}
}
return result + '\n';
}
private isIcon(path: string) {
return path.startsWith('fas') || path.startsWith('far') || path.startsWith('fal') || path.startsWith('fad') || path.startsWith('fab');
}
private transformAbsoluteFilePath(path: string) {
const pathURL = new URL(path);
if (pathURL) {
return '/localFileSlash' + pathURL.pathname;
}
return path;
}
}
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