Add homematic-go v0.1.0

This is the minimal viable product (MVP) of this library suitable to
build the MVP of the sia-server.

1 files changed, 207 insertions, 0 deletions

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+[![GoDoc](https://godoc.org/github.com/beevik/etree?status.svg)](https://godoc.org/github.com/beevik/etree)
+[![Go](https://github.com/beevik/etree/actions/workflows/go.yml/badge.svg)](https://github.com/beevik/etree/actions/workflows/go.yml)
+
+etree
+=====
+
+The etree package is a lightweight, pure go package that expresses XML in
+the form of an element tree.  Its design was inspired by the Python
+[ElementTree](http://docs.python.org/2/library/xml.etree.elementtree.html)
+module.
+
+Some of the package's capabilities and features:
+
+* Represents XML documents as trees of elements for easy traversal.
+* Imports, serializes, modifies or creates XML documents from scratch.
+* Writes and reads XML to/from files, byte slices, strings and io interfaces.
+* Performs simple or complex searches with lightweight XPath-like query APIs.
+* Auto-indents XML using spaces or tabs for better readability.
+* Implemented in pure go; depends only on standard go libraries.
+* Built on top of the go [encoding/xml](http://golang.org/pkg/encoding/xml)
+  package.
+
+The etree package is compatible with go versions 1.23 and later.
+
+### Creating an XML document
+
+The following example creates an XML document from scratch using the etree
+package and outputs its indented contents to stdout.
+```go
+doc := etree.NewDocument()
+doc.CreateProcInst("xml", `version="1.0" encoding="UTF-8"`)
+doc.CreateProcInst("xml-stylesheet", `type="text/xsl" href="style.xsl"`)
+
+people := doc.CreateElement("People")
+people.CreateComment("These are all known people")
+
+jon := people.CreateElement("Person")
+jon.CreateAttr("name", "Jon")
+
+sally := people.CreateElement("Person")
+sally.CreateAttr("name", "Sally")
+
+doc.Indent(2)
+doc.WriteTo(os.Stdout)
+```
+
+Output:
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="style.xsl"?>
+<People>
+  <!--These are all known people-->
+  <Person name="Jon"/>
+  <Person name="Sally"/>
+</People>
+```
+
+### Reading an XML file
+
+Suppose you have a file on disk called `bookstore.xml` containing the
+following data:
+
+```xml
+<bookstore xmlns:p="urn:schemas-books-com:prices">
+
+  <book category="COOKING">
+    <title lang="en">Everyday Italian</title>
+    <author>Giada De Laurentiis</author>
+    <year>2005</year>
+    <p:price>30.00</p:price>
+  </book>
+
+  <book category="CHILDREN">
+    <title lang="en">Harry Potter</title>
+    <author>J K. Rowling</author>
+    <year>2005</year>
+    <p:price>29.99</p:price>
+  </book>
+
+  <book category="WEB">
+    <title lang="en">XQuery Kick Start</title>
+    <author>James McGovern</author>
+    <author>Per Bothner</author>
+    <author>Kurt Cagle</author>
+    <author>James Linn</author>
+    <author>Vaidyanathan Nagarajan</author>
+    <year>2003</year>
+    <p:price>49.99</p:price>
+  </book>
+
+  <book category="WEB">
+    <title lang="en">Learning XML</title>
+    <author>Erik T. Ray</author>
+    <year>2003</year>
+    <p:price>39.95</p:price>
+  </book>
+
+</bookstore>
+```
+
+This code reads the file's contents into an etree document.
+```go
+doc := etree.NewDocument()
+if err := doc.ReadFromFile("bookstore.xml"); err != nil {
+    panic(err)
+}
+```
+
+You can also read XML from a string, a byte slice, or an `io.Reader`.
+
+### Processing elements and attributes
+
+This example illustrates several ways to access elements and attributes using
+etree selection queries.
+```go
+root := doc.SelectElement("bookstore")
+fmt.Println("ROOT element:", root.Tag)
+
+for _, book := range root.SelectElementsSeq("book") {
+    fmt.Println("CHILD element:", book.Tag)
+    if title := book.SelectElement("title"); title != nil {
+        lang := title.SelectAttrValue("lang", "unknown")
+        fmt.Printf("  TITLE: %s (%s)\n", title.Text(), lang)
+    }
+    for _, attr := range book.Attr {
+        fmt.Printf("  ATTR: %s=%s\n", attr.Key, attr.Value)
+    }
+}
+```
+Output:
+```
+ROOT element: bookstore
+CHILD element: book
+  TITLE: Everyday Italian (en)
+  ATTR: category=COOKING
+CHILD element: book
+  TITLE: Harry Potter (en)
+  ATTR: category=CHILDREN
+CHILD element: book
+  TITLE: XQuery Kick Start (en)
+  ATTR: category=WEB
+CHILD element: book
+  TITLE: Learning XML (en)
+  ATTR: category=WEB
+```
+
+### Path queries
+
+This example uses etree's path functions to select all book titles that fall
+into the category of 'WEB'.  The double-slash prefix in the path causes the
+search for book elements to occur recursively; book elements may appear at any
+level of the XML hierarchy.
+```go
+for _, t := range doc.FindElementsSeq("//book[@category='WEB']/title") {
+    fmt.Println("Title:", t.Text())
+}
+```
+
+Output:
+```
+Title: XQuery Kick Start
+Title: Learning XML
+```
+
+This example finds the first book element under the root bookstore element and
+outputs the tag and text of each of its child elements.
+```go
+for _, e := range doc.FindElementsSeq("./bookstore/book[1]/*") {
+    fmt.Printf("%s: %s\n", e.Tag, e.Text())
+}
+```
+
+Output:
+```
+title: Everyday Italian
+author: Giada De Laurentiis
+year: 2005
+price: 30.00
+```
+
+This example finds all books with a price of 49.99 and outputs their titles.
+```go
+path := etree.MustCompilePath("./bookstore/book[p:price='49.99']/title")
+for _, e := range doc.FindElementsPathSeq(path) {
+    fmt.Println(e.Text())
+}
+```
+
+Output:
+```
+XQuery Kick Start
+```
+
+Note that this example uses the `FindElementsPathSeq` function, which takes as
+an argument a pre-compiled path object. Use precompiled paths when you plan to
+search with the same path more than once.
+
+### Other features
+
+These are just a few examples of the things the etree package can do. See the
+[documentation](http://godoc.org/github.com/beevik/etree) for a complete
+description of its capabilities.
+
+### Contributing
+
+This project accepts contributions. Just fork the repo and submit a pull
+request!