scheme_cgo.go RawHistoryFolder

1//go:build webkit_cgo
2
3package webkit
4
5/*
6#include <stdlib.h>
7*/
8import "C"
9
10import (
11	"unsafe"
12)
13
14// Resolver provides bytes and mime for a given custom URI.
15type SchemeResolver func(uri string) (mime string, data []byte, ok bool)
16
17var globalResolver SchemeResolver
18
19// SetURISchemeResolver sets the resolver used by the custom URI scheme handler.
20func SetURISchemeResolver(r SchemeResolver) { globalResolver = r }
21
22//export goResolveURIScheme
23func goResolveURIScheme(curi *C.char, outLen *C.size_t, outMime **C.char) unsafe.Pointer {
24	if curi == nil || outLen == nil || outMime == nil {
25		return nil
26	}
27	uri := C.GoString(curi)
28	if globalResolver == nil {
29		*outLen = 0
30		*outMime = nil
31		return nil
32	}
33	mime, data, ok := globalResolver(uri)
34	if !ok || len(data) == 0 {
35		*outLen = 0
36		*outMime = nil
37		return nil
38	}
39	buf := C.malloc(C.size_t(len(data)))
40	if buf == nil {
41		*outLen = 0
42		*outMime = nil
43		return nil
44	}
45	// Copy data into C buffer
46	dst := (*[1 << 30]byte)(buf)[:len(data):len(data)]
47	copy(dst, data)
48	*outLen = C.size_t(len(data))
49	*outMime = C.CString(mime)
50	return buf
51}