How to Efficiently Convert HTML Escape Sequences in Go?
Converting Escape Characters in HTML Tags
In Go, the conversion of HTML tags containing escape characters is not as straightforward as desired. While json.Marshal() can easily convert strings with characters like "<" to its escape sequence "u003chtmlu003e," json.Unmarshal() does not provide a direct and efficient method for the reverse operation.
Using strconv.Unquote()
The strconv.Unquote() function can be employed to perform the conversion. However, it requires the string to be enclosed in quotation marks. Therefore, adding these enclosing characters manually is necessary.
import (
"fmt"
"strconv"
)
func main() {
// Important to use backtick ` (raw string literal)
// else the compiler will unquote it (interpreted string literal)!
s := `\u003chtml\u003e`
fmt.Println(s)
s2, err := strconv.Unquote(`"` + s + `"`)
if err != nil {
panic(err)
}
fmt.Println(s2)
}Output:
\u003chtml\u003e
<html></p>
<p><strong>Note:</strong></p>
<p>The html package is also available for HTML text escaping and unescaping. However, it does not decode unicode sequences of the form uxxxx, only decimal; or HH;.</p>
<pre class="brush:php;toolbar:false">import (
"fmt"
"html"
)
func main() {
fmt.Println(html.UnescapeString(`\u003chtml\u003e`)) // wrong
fmt.Println(html.UnescapeString(`&#60;html&#62;`)) // good
fmt.Println(html.UnescapeString(`&#x3c;html&#x3e;`)) // good
}Output:
\u003chtml\u003e <html> <html>
Note 2:
Remember that quoted strings using the double quote (") are interpreted strings, which are unquoted by the compiler. To specify a string with its quotes intact, use backticks to create a raw string literal.
s := "\u003chtml\u003e" // Interpreted string literal (unquoted by the compiler!)
fmt.Println(s)
s2 := `\u003chtml\u003e` // Raw string literal (no unquoting will take place)
fmt.Println(s2)
s3 := "\u003chtml\u003e" // Double quoted interpreted string literal
// (unquoted by the compiler to be "single" quoted)
fmt.Println(s3)Output:
<html> \u003chtml\u003e
The above is the detailed content of How to Efficiently Convert HTML Escape Sequences in Go?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
What are the vulnerabilities of Debian OpenSSL
Apr 02, 2025 am 07:30 AM
OpenSSL, as an open source library widely used in secure communications, provides encryption algorithms, keys and certificate management functions. However, there are some known security vulnerabilities in its historical version, some of which are extremely harmful. This article will focus on common vulnerabilities and response measures for OpenSSL in Debian systems. DebianOpenSSL known vulnerabilities: OpenSSL has experienced several serious vulnerabilities, such as: Heart Bleeding Vulnerability (CVE-2014-0160): This vulnerability affects OpenSSL 1.0.1 to 1.0.1f and 1.0.2 to 1.0.2 beta versions. An attacker can use this vulnerability to unauthorized read sensitive information on the server, including encryption keys, etc.
Transforming from front-end to back-end development, is it more promising to learn Java or Golang?
Apr 02, 2025 am 09:12 AM
Backend learning path: The exploration journey from front-end to back-end As a back-end beginner who transforms from front-end development, you already have the foundation of nodejs,...
How to specify the database associated with the model in Beego ORM?
Apr 02, 2025 pm 03:54 PM
Under the BeegoORM framework, how to specify the database associated with the model? Many Beego projects require multiple databases to be operated simultaneously. When using Beego...
What should I do if the custom structure labels in GoLand are not displayed?
Apr 02, 2025 pm 05:09 PM
What should I do if the custom structure labels in GoLand are not displayed? When using GoLand for Go language development, many developers will encounter custom structure tags...
What libraries are used for floating point number operations in Go?
Apr 02, 2025 pm 02:06 PM
The library used for floating-point number operation in Go language introduces how to ensure the accuracy is...
What is the problem with Queue thread in Go's crawler Colly?
Apr 02, 2025 pm 02:09 PM
Queue threading problem in Go crawler Colly explores the problem of using the Colly crawler library in Go language, developers often encounter problems with threads and request queues. �...
How to solve the user_id type conversion problem when using Redis Stream to implement message queues in Go language?
Apr 02, 2025 pm 04:54 PM
The problem of using RedisStream to implement message queues in Go language is using Go language and Redis...
How to configure MongoDB automatic expansion on Debian
Apr 02, 2025 am 07:36 AM
This article introduces how to configure MongoDB on Debian system to achieve automatic expansion. The main steps include setting up the MongoDB replica set and disk space monitoring. 1. MongoDB installation First, make sure that MongoDB is installed on the Debian system. Install using the following command: sudoaptupdatesudoaptinstall-ymongodb-org 2. Configuring MongoDB replica set MongoDB replica set ensures high availability and data redundancy, which is the basis for achieving automatic capacity expansion. Start MongoDB service: sudosystemctlstartmongodsudosys
