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If I have an HTML template like:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://example.com/mystyle.css">
<title>Document</title>
</head>
<body>
<a href="/images/1.png">link text</a>
<a href="/images/3.png">link text</a>
<a class="link" href="/images/4.png">link</a>
<img src="/img_4.jpg" />
</body>
</html>
How would I isolate and replace all<a> tag hrefs such that https://example.com prepends the relative urls but not absolute urls e.g I'd want the following result:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://example.com/mystyle.css"> ***leave untouched absolute url not relative**
<title>Document</title>
</head>
<body>
<a href="https://example.com/images/1.png">link text</a> **change**
<a href="https://example.com/images/3.png">link text</a> **change**
<a class="link" href="https://example.com/images/4.png">link</a> **change**
<img src="/img_4.jpg" /> ***leave untouched src not href**
</body>
</html>
I have a dilemma where I'm exploring ideas to prepend a CDN URL to certain file paths in a static HTML, CSS, JS website with thousands of files but I can't use htaccess (LAMP server) or base href (because of navigation). Manually adding links is also a non runner given the scale. Reason I can't use htaccess: Selective url redirect using .htaccess The CMS that generates the static website doesn't have the facility to prepend the CDN url in the file paths either.
Any recommendations greatly appreciated. Thanks
As already proposed in the comments, you could usesed for that job in combination withfind.
Bash example:
for file in `find . -name *.html`; do sed -E 's/href="\.?(\/[^"]*)"/href="https:\/\/example.com\1"/g' $file; done
By adding the-i option to thesed command, the files will be modified in-place. Use the above command without the-i option for testing purposes.
Input:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://example.com/mystyle.css">
<title>Document</title>
</head>
<body>
<a href="/images/1.png">link text</a>
<a href="/images/3.png">link text</a>
<a class="link" href="./images/4.png">link</a>
<img src="/img_4.jpg" />
</body>
</html>
Output:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://example.com/mystyle.css">
<title>Document</title>
</head>
<body>
<a href="https://example.com/images/1.png">link text</a>
<a href="https://example.com/images/3.png">link text</a>
<a class="link" href="https://example.com/images/4.png">link</a>
<img src="/img_4.jpg" />
</body>
</html>
In my opinion the easiest solution would be by creating a $baseUrl variable.
In PHP:
$baseUrl = 'https://example.com';
Then in HTML you can do:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://example.com/mystyle.css">
<title>Document</title>
</head>
<body>
<a href="<?php echo $baseUrl; ?>/images/1.png">link text</a>
<a href="<?php echo $baseUrl; ?>/images/3.png">link text</a>
<a class="link" href="<?php echo $baseUrl; ?>/images/4.png">link</a>
<img src="/img_4.jpg" />
</body>
</html>
Or in JavaScript you could do the following:
var links = document.getElementsByTagName("a");
Array.from(links).forEach(
function(element, index) {
var href = 'base_url' + element.getAttribute("href")
element.setAttribute('href', href);
}
);
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
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JavaScript is a multi-paradigm language that supports event-driven, functional, and mandatory (including object-oriented and prototype-based) programming types. Originally JavaScript was only used on the client side. JavaScript is now still used as a server-side programming language. To summarize, we can say that JavaScript is the language of the Internet.
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CSS (Cascading Style Sheets) is a formal language for describing the appearance of a document written using a markup language.
It is mainly used as a means of describing, decorating the appearance of web pages written using HTML and XHTML markup languages, but can also be applied to any XML documents, such as SVG or XUL.
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HTML (English "hyper text markup language" - hypertext markup language) is a special markup language that is used to create sites on the Internet.
Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
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