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[remark-wiki-link][m]: Add image size adjustment in remark-wiki-link (
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#1084)

* [remark-wiki-link][m]: Add image size adjustment in `remark-wiki-link`

* [remark-wiki-links][m]: Add image size feature to images
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@mohamedsalem401
mohamedsalem401 authored Apr 15, 2024
1 parent 852cf60 commit 57952e0
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Showing 7 changed files with 166 additions and 81 deletions.
5 changes: 5 additions & 0 deletions .changeset/lovely-laws-return.md
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@@ -0,0 +1,5 @@
---
'@portaljs/remark-wiki-link': minor
---

Add image resize feature
4 changes: 2 additions & 2 deletions package-lock.json
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2 changes: 1 addition & 1 deletion packages/remark-wiki-link/package.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "@portaljs/remark-wiki-link",
"version": "1.1.2",
"version": "1.1.3",
"description": "Parse and render wiki-style links in markdown especially Obsidian style links.",
"repository": {
"type": "git",
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97 changes: 58 additions & 39 deletions packages/remark-wiki-link/src/lib/fromMarkdown.ts
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Original file line number Diff line number Diff line change
@@ -1,38 +1,47 @@
import { isSupportedFileFormat } from "./isSupportedFileFormat";
import { isSupportedFileFormat } from './isSupportedFileFormat';

const defaultWikiLinkResolver = (target: string) => {
// for [[#heading]] links
if (!target) {
return [];
}
let permalink = target.replace(/\/index$/, "");
let permalink = target.replace(/\/index$/, '');
// TODO what to do with [[index]] link?
if (permalink.length === 0) {
permalink = "/";
permalink = '/';
}
return [permalink];
};

export interface FromMarkdownOptions {
pathFormat?:
| "raw" // default; use for regular relative or absolute paths
| "obsidian-absolute" // use for Obsidian-style absolute paths (with no leading slash)
| "obsidian-short"; // use for Obsidian-style shortened paths (shortest path possible)
| 'raw' // default; use for regular relative or absolute paths
| 'obsidian-absolute' // use for Obsidian-style absolute paths (with no leading slash)
| 'obsidian-short'; // use for Obsidian-style shortened paths (shortest path possible)
permalinks?: string[]; // list of permalinks to match possible permalinks of a wiki link against
wikiLinkResolver?: (name: string) => string[]; // function to resolve wiki links to an array of possible permalinks
newClassName?: string; // class name to add to links that don't have a matching permalink
wikiLinkClassName?: string; // class name to add to all wiki links
hrefTemplate?: (permalink: string) => string; // function to generate the href attribute of a link
}

export function getImageSize(size: string) {
// eslint-disable-next-line prefer-const
let [width, height] = size.split('x');

if (!height) height = width;

return { width, height };
}

// mdas-util-from-markdown extension
// https://github.com/syntax-tree/mdast-util-from-markdown#extension
function fromMarkdown(opts: FromMarkdownOptions = {}) {
const pathFormat = opts.pathFormat || "raw";
const pathFormat = opts.pathFormat || 'raw';
const permalinks = opts.permalinks || [];
const wikiLinkResolver = opts.wikiLinkResolver || defaultWikiLinkResolver;
const newClassName = opts.newClassName || "new";
const wikiLinkClassName = opts.wikiLinkClassName || "internal";
const newClassName = opts.newClassName || 'new';
const wikiLinkClassName = opts.wikiLinkClassName || 'internal';
const defaultHrefTemplate = (permalink: string) => permalink;

const hrefTemplate = opts.hrefTemplate || defaultHrefTemplate;
Expand All @@ -44,9 +53,9 @@ function fromMarkdown(opts: FromMarkdownOptions = {}) {
function enterWikiLink(token) {
this.enter(
{
type: "wikiLink",
type: 'wikiLink',
data: {
isEmbed: token.isType === "embed",
isEmbed: token.isType === 'embed',
target: null, // the target of the link, e.g. "Foo Bar#Heading" in "[[Foo Bar#Heading]]"
alias: null, // the alias of the link, e.g. "Foo" in "[[Foo Bar|Foo]]"
permalink: null, // TODO shouldn't this be named just "link"?
Expand Down Expand Up @@ -80,18 +89,18 @@ function fromMarkdown(opts: FromMarkdownOptions = {}) {
} = wikiLink;
// eslint-disable-next-line no-useless-escape
const wikiLinkWithHeadingPattern = /^(.*?)(#.*)?$/u;
const [, path, heading = ""] = target.match(wikiLinkWithHeadingPattern);
const [, path, heading = ''] = target.match(wikiLinkWithHeadingPattern);

const possibleWikiLinkPermalinks = wikiLinkResolver(path);

const matchingPermalink = permalinks.find((e) => {
return possibleWikiLinkPermalinks.find((p) => {
if (pathFormat === "obsidian-short") {
if (pathFormat === 'obsidian-short') {
if (e === p || e.endsWith(p)) {
return true;
}
} else if (pathFormat === "obsidian-absolute") {
if (e === "/" + p) {
} else if (pathFormat === 'obsidian-absolute') {
if (e === '/' + p) {
return true;
}
} else {
Expand All @@ -106,65 +115,75 @@ function fromMarkdown(opts: FromMarkdownOptions = {}) {
// TODO this is ugly
const link =
matchingPermalink ||
(pathFormat === "obsidian-absolute"
? "/" + possibleWikiLinkPermalinks[0]
(pathFormat === 'obsidian-absolute'
? '/' + possibleWikiLinkPermalinks[0]
: possibleWikiLinkPermalinks[0]) ||
"";
'';

wikiLink.data.exists = !!matchingPermalink;
wikiLink.data.permalink = link;

// remove leading # if the target is a heading on the same page
const displayName = alias || target.replace(/^#/, "");
const headingId = heading.replace(/\s+/g, "-").toLowerCase();
const displayName = alias || target.replace(/^#/, '');
const headingId = heading.replace(/\s+/g, '-').toLowerCase();
let classNames = wikiLinkClassName;
if (!matchingPermalink) {
classNames += " " + newClassName;
classNames += ' ' + newClassName;
}

if (isEmbed) {
const [isSupportedFormat, format] = isSupportedFileFormat(target);
if (!isSupportedFormat) {
// Temporarily render note transclusion as a regular wiki link
if (!format) {
wikiLink.data.hName = "a";
wikiLink.data.hName = 'a';
wikiLink.data.hProperties = {
className: classNames + " " + "transclusion",
className: classNames + ' ' + 'transclusion',
href: hrefTemplate(link) + headingId,
};
wikiLink.data.hChildren = [{ type: "text", value: displayName }];

wikiLink.data.hChildren = [{ type: 'text', value: displayName }];
} else {
wikiLink.data.hName = "p";
wikiLink.data.hName = 'p';
wikiLink.data.hChildren = [
{
type: "text",
type: 'text',
value: `![[${target}]]`,
},
];
}
} else if (format === "pdf") {
wikiLink.data.hName = "iframe";
} else if (format === 'pdf') {
wikiLink.data.hName = 'iframe';
wikiLink.data.hProperties = {
className: classNames,
width: "100%",
width: '100%',
src: `${hrefTemplate(link)}#toolbar=0`,
};
} else {
wikiLink.data.hName = "img";
wikiLink.data.hProperties = {
className: classNames,
src: hrefTemplate(link),
alt: displayName,
};
const hasDimensions = alias && /^\d+(x\d+)?$/.test(alias);
// Take the target as alt text except if alt name was provided [[target|alt text]]
const altText = hasDimensions || !alias ? target : alias;

wikiLink.data.hName = 'img';
wikiLink.data.hProperties = {
className: classNames,
src: hrefTemplate(link),
alt: altText
};

if (hasDimensions) {
const { width, height } = getImageSize(alias as string);
Object.assign(wikiLink.data.hProperties, {
width,
height,
});
}
}
} else {
wikiLink.data.hName = "a";
wikiLink.data.hName = 'a';
wikiLink.data.hProperties = {
className: classNames,
href: hrefTemplate(link) + headingId,
};
wikiLink.data.hChildren = [{ type: "text", value: displayName }];
wikiLink.data.hChildren = [{ type: 'text', value: displayName }];
}
}

Expand Down
48 changes: 29 additions & 19 deletions packages/remark-wiki-link/src/lib/html.ts
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Original file line number Diff line number Diff line change
@@ -1,23 +1,24 @@
import { isSupportedFileFormat } from "./isSupportedFileFormat";
import { getImageSize } from './fromMarkdown';
import { isSupportedFileFormat } from './isSupportedFileFormat';

const defaultWikiLinkResolver = (target: string) => {
// for [[#heading]] links
if (!target) {
return [];
}
let permalink = target.replace(/\/index$/, "");
let permalink = target.replace(/\/index$/, '');
// TODO what to do with [[index]] link?
if (permalink.length === 0) {
permalink = "/";
permalink = '/';
}
return [permalink];
};

export interface HtmlOptions {
pathFormat?:
| "raw" // default; use for regular relative or absolute paths
| "obsidian-absolute" // use for Obsidian-style absolute paths (with no leading slash)
| "obsidian-short"; // use for Obsidian-style shortened paths (shortest path possible)
| 'raw' // default; use for regular relative or absolute paths
| 'obsidian-absolute' // use for Obsidian-style absolute paths (with no leading slash)
| 'obsidian-short'; // use for Obsidian-style shortened paths (shortest path possible)
permalinks?: string[]; // list of permalinks to match possible permalinks of a wiki link against
wikiLinkResolver?: (name: string) => string[]; // function to resolve wiki links to an array of possible permalinks
newClassName?: string; // class name to add to links that don't have a matching permalink
Expand All @@ -28,11 +29,11 @@ export interface HtmlOptions {
// Micromark HtmlExtension
// https://github.com/micromark/micromark#htmlextension
function html(opts: HtmlOptions = {}) {
const pathFormat = opts.pathFormat || "raw";
const pathFormat = opts.pathFormat || 'raw';
const permalinks = opts.permalinks || [];
const wikiLinkResolver = opts.wikiLinkResolver || defaultWikiLinkResolver;
const newClassName = opts.newClassName || "new";
const wikiLinkClassName = opts.wikiLinkClassName || "internal";
const newClassName = opts.newClassName || 'new';
const wikiLinkClassName = opts.wikiLinkClassName || 'internal';
const defaultHrefTemplate = (permalink: string) => permalink;
const hrefTemplate = opts.hrefTemplate || defaultHrefTemplate;

Expand All @@ -41,21 +42,21 @@ function html(opts: HtmlOptions = {}) {
}

function enterWikiLink() {
let stack = this.getData("wikiLinkStack");
if (!stack) this.setData("wikiLinkStack", (stack = []));
let stack = this.getData('wikiLinkStack');
if (!stack) this.setData('wikiLinkStack', (stack = []));

stack.push({});
}

function exitWikiLinkTarget(token) {
const target = this.sliceSerialize(token);
const current = top(this.getData("wikiLinkStack"));
const current = top(this.getData('wikiLinkStack'));
current.target = target;
}

function exitWikiLinkAlias(token) {
const alias = this.sliceSerialize(token);
const current = top(this.getData("wikiLinkStack"));
const current = top(this.getData('wikiLinkStack'));
current.alias = alias;
}

Expand Down Expand Up @@ -111,7 +112,9 @@ function html(opts: HtmlOptions = {}) {
// Temporarily render note transclusion as a regular wiki link
if (!format) {
this.tag(
`<a href="${hrefTemplate(link + headingId)}" class="${classNames} transclusion">`
`<a href="${hrefTemplate(
link + headingId
)}" class="${classNames} transclusion">`
);
this.raw(displayName);
this.tag("</a>");
Expand All @@ -125,11 +128,18 @@ function html(opts: HtmlOptions = {}) {
)}#toolbar=0" class="${classNames}" />`
);
} else {
this.tag(
`<img src="${hrefTemplate(
link
)}" alt="${displayName}" class="${classNames}" />`
);
const hasDimensions = alias && /^\d+(x\d+)?$/.test(alias);
// Take the target as alt text except if alt name was provided [[target|alt text]]
const altText = hasDimensions || !alias ? target : alias;
let imgAttributes = `src="${hrefTemplate(
link
)}" alt="${altText}" class="${classNames}"`;

if (hasDimensions) {
const { width, height } = getImageSize(alias as string);
imgAttributes += ` width="${width}" height="${height}"`;
}
this.tag(`<img ${imgAttributes} />`);
}
} else {
this.tag(
Expand Down
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