Use the L scripting language to develop an XML access library.

Use the L scripting language to develop an XML access library.

XML is currently the most widely used data exchange format

Then we will use the L script language to develop an XML access library.

The script file below is a simple XML file access library, which can generate a simple XML file

# Scplib
Definition: Class, XML file
Start: Class, XML file

Definition: String, XML File Header

Definition: String, file body

Definition: String, start tag, "<"

Definition: String, line end label, "/>"

Definition: String, end tag, ">"

Definition: String, paragraph end label

Definition: function, insert file header, File Header

Start: function. Insert a file header.

# Clear: String, XML File Header

# Connection: String, XML file header, and file header

Clear: String, file body

Connection: String, file body, File Header

Display: file body

End: function, insert File Header

Definition: function, add node, node name

Start: function, add Node

Definition: String, node content

Connection: String, node content, start tag

Connection: String, node content, node name

Connection: String, node content ,""

Connection: String, node content, end tag

Connection: String, node content, start tag

Connection: String, node content ,"/"

Connection: String, node content, node name

Connection: String, node content, end tag

Connection: String, file body, node content

Display: file body

End: function, add Node

Definition: function, add a subnode, node name, And subnode name

Start: function. Add a subnode.

Definition: string at the end of the node

Connection: String, end of the node, start tag

Connection: String, end of the node ,"/"

Connection: String, end of the node, and node name

Connection: String, tail of the node, and end tag

Definition: integer, tail position, 0

Search: String, file body, node tail, tail location

Definition: String, node content

Connection: String, node content, start tag

Connection: String, node content, subnode name

Connection: String, node content ,""

Connection: String, node content, end tag

Connection: String, node content, start tag

Connection: String, node content ,"/"

Connection: String, node content, subnode name

Connection: String, node content, end tag

If: tail position> = 0, insert: String, file body, node content, tail position

Display: file body

End: function, add subnode

Definition: function, add node value, node name, node Value

Start: function, add node Value

Definition: string at the end of the node

Connection: String, end of the node, start tag

Connection: String, end of the node ,"/"

Connection: String, end of the node, and node name

Connection: String, tail of the node, and end tag

Definition: integer, tail position, 0

Search: String, file body, node tail, tail location

If: tail position> = 0, insert: String, file body, node value, tail position

Display: file body

End: function, add node Value

Definition: function, add attribute, node name, attribute name, attribute value

Start: function. Add attributes.

Definition: String, start of a node

Connection: String, node start, start tag

Connection: String, node start, node name

Definition: integer, starting position, 0

Definition: integer, length of the Start Node, 0

Size: String, node start, and node start Length

Definition: String, attribute body ,""

Connection: String, attribute body, attribute name

Connection: String, attribute body, ="

Connection: String, attribute body, attribute value

Connection: String, attribute body ,"\""

Search: String, file body, node start, start position

Calculation: Start position = start position + start length of the node

If: Start position> = 0, insert: String, file body, attribute body, start position

Display: file body

End: function, add attribute

Definition: function, saved as a file, file name

Start: function, saved as a file

Delete: file, file name

Open: file, file1, file name

Write: file, file1, file body

End: function, saved as a file

End: Class, XML file

The following script references the self-implemented XML library and instantiates an XML class.

# Scp
Import: Library, E: \ ScriptEngine \ Scripts \ xmllib. scp


Definition: String, common XML file header, <? Xml version = "1.0" encoding = "UTF-8" standalone = "yes"?>
# Instantiate an XML file object
Definition: XML file, my XML file
Call: My XML file: function, insert file header, General XML File Header
Call: My XML file: function, add node, html
# Call: My XML file: function, add node value, html, I am an HTML file
Call: My XML file: function, add attribute, html, version, 1.0
Call: My XML file: function, add sub-nodes, html, book
Call: My XML file: function, add sub-nodes, html, price
Call: My XML file: function, add attribute, book, name, "C ++"
Call: My XML file: function, add attribute, price, value, 100.00
Call: My XML file: function, saved as a file, c: \ 1.xml
Definition: String, str1
Waiting: user input, str1

Interpreter engine Github https://github.com/zhaoliangcn/LScript