90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package main
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import (
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"bytes"
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"encoding/xml"
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"fmt"
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"log"
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"strings"
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)
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type Context struct {
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xml *XML
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out *bytes.Buffer
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}
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func newContext() *Context {
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return &Context{
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xml: &XML{},
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out: bytes.NewBuffer([]byte{}),
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}
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}
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// Putln calls put and adds a new line to the end of 'format'.
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func (c *Context) Putln(format string, v ...interface{}) {
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c.Put(format + "\n", v...)
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}
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// Put is a short alias to write to 'out'.
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func (c *Context) Put(format string, v ...interface{}) {
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_, err := c.out.WriteString(fmt.Sprintf(format, v...))
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if err != nil {
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log.Fatalf("There was an error writing to context buffer: %s", err)
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}
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}
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// TypePrefix searches the parsed XML for a type matching 'needle'.
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// It then returns the appropriate prefix to be used in source code.
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// Note that the core X protocol *is* a namespace, but does not have a prefix.
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// Also note that you should probably check the BaseTypeMap and TypeMap
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// before calling this function.
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func (c *Context) TypePrefix(needle Type) string {
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// If this is xproto, quit. No prefixes needed.
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if c.xml.Header == "xproto" {
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return ""
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}
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// First check for the type in the current namespace.
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if c.xml.HasType(needle) {
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return strings.Title(c.xml.Header)
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}
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// Now check each of the imports...
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for _, imp := range c.xml.Imports {
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if imp.xml.Header != "xproto" && imp.xml.HasType(needle) {
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return strings.Title(imp.xml.Header)
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}
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}
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return ""
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}
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// Translate is the big daddy of them all. It takes in an XML byte slice
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// and writes Go code to the 'out' buffer.
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func (c *Context) Translate(xmlBytes []byte) {
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err := xml.Unmarshal(xmlBytes, c.xml)
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if err != nil {
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log.Fatal(err)
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}
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// Parse all imports
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c.xml.Imports.Eval()
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// Make sure all top level enumerations have expressions
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// (For when there are empty items.)
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c.xml.Enums.Eval()
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// It's Morphin' Time!
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c.xml.Morph(c)
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// for _, req := range c.xml.Requests {
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// if req.Name != "CreateContext" && req.Name != "MakeCurrent" {
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// continue
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// }
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// log.Println(req.Name)
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// for _, field := range req.Fields {
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// log.Println("\t", field.XMLName.Local, field.Type.Morph(c))
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// }
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// }
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}
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