XSD 模式語言解析引擎與跨語言代碼生成器

xgen 是 Go 語言編寫的 XSD (XML Schema Definition) 工具基礎庫，其命令行工具的目標是將 XML 模式定義文件編譯爲包括 Go/C/Java/Rust/TypeScript 在內的多語言類型或類聲明代碼。

GitHub 開源：github.com/xuri/xgen

安裝命令行工具:

xgen [<flag> ...] <XSD file or directory> ...
   -i <path> Input file path or directory for the XML schema definition
   -o <path> Output file path or directory for the generated code
   -p        Specify the package name
   -l        Specify the language of generated code (Go/C/Java/Rust/TypeScript)
   -h        Output this help and exit
   -v        Output version and exit

例如，下面的命令將遍歷 xsd 目錄中的 XML 模式定義文件，並在 output 目錄中生成 Go 語言結構體聲明代碼:

xgen -i /path/to/your/xsd -o /path/to/your/output -l Go

XSD 源文件：

<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://example.org/">
  <simpleType name="myType1">
    <restriction base="base64Binary">
      <length value="10" />
    </restriction>
  </simpleType>

  <complexType name="myType2">
    <simpleContent>
      <extension base="base64Binary">
        <attribute name="length" type="int"/>
      </extension>
    </simpleContent>
  </complexType>

  <complexType name="myType3">
    <simpleContent>
      <extension base="date">
        <attribute name="length" type="int"/>
      </extension>
    </simpleContent>
  </complexType>

  <complexType name="myType4">
    <sequence>
      <element name="title" type="string"/>
      <element name="blob" type="base64Binary"/>
      <element name="timestamp" type="dateTime"/>
    </sequence>
  </complexType>

  <simpleType name="myType5">
    <restriction base="gDay"/>
  </simpleType>
</schema>

生成 Go 語言代碼：

// Copyright 2020 The xgen Authors. All rights reserved.
//
// DO NOT EDIT: generated by xgen XSD generator
//
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package schema

import (
    "encoding/xml"
    "time"
)

// MyType1 ...
type MyType1 []byte

// MyType2 ...
type MyType2 struct {
    XMLName    xml.Name `xml:"myType2"`
    LengthAttr int      `xml:"length,attr,omitempty"`
}

// MyType3 ...
type MyType3 struct {
    XMLName    xml.Name `xml:"myType3"`
    LengthAttr int      `xml:"length,attr,omitempty"`
}

// MyType4 ...
type MyType4 struct {
    XMLName   xml.Name  `xml:"myType4"`
    Title     string    `xml:"title"`
    Blob      []byte    `xml:"blob"`
    Timestamp time.Time `xml:"timestamp"`
}

// MyType5 ...
type MyType5 time.Time