inp.format.inp1.writer source code

1 /**
2     INP 1 Format Writer
3 
4     Copyright: 
5         Copyright © 2020-2026, Inochi2D Project
6     
7     License:
8         $(LINK2 https://github.com/Inochi2D/inochi2d/blob/main/LICENSE, BSD 2-clause License)
9     
10     Authors:
11         Luna Nielsen
12 */
13 module inp.format.inp1.writer;
14 import inp.format.json.writer;
15 import inp.format.node;
16 import inp.format.inp1;
17 import nulib.io.stream;
18 import nulib.io.stream.rw;
19 import nulib.math;
20 import numem;
21 
22 import inp.format : 
23     INP_TAG_PAYLOAD, 
24     INP_TAG_TEXTURES, 
25     INP_TAG_VENDOR;
26 
27 @nogc:
28 
29 /**
30     Write the contents of a $(D DataNode) into the INP1 File.
31 
32     Params:
33         stream =    The stream to write to.
34         node =      A DataNode object following the INP structure.
35 */
36 void writeINP1(Stream stream, ref DataNode node) {
37     scope  StreamWriter writer = new StreamWriter(stream);
38 
39     if (INP_TAG_PAYLOAD in node) {
40         writer.writeUTF8(INP1_MAGIC);
41 
42         ubyte[] payload = node[INP_TAG_PAYLOAD].makeJsonPayload();
43         writer.writeBE!uint(cast(uint)payload.length);
44         stream.write(payload);
45 
46         nu_freea(payload);
47     }
48 
49     if (INP_TAG_TEXTURES in node) {
50         writer.writeUTF8(INP_TAG_TEXTURES);
51         writer.writeBE!uint(cast(uint)node[INP_TAG_TEXTURES].length);
52         foreach(ref value; node[INP_TAG_TEXTURES].array) {
53             writer.writeBE!uint(cast(uint)value["data"].blob.length);
54             writer.writeBE!ubyte(value["encoding"].tryCoerce!ubyte);
55             stream.write(value["data"].blob);
56         }
57     }
58 
59     if (INP_TAG_VENDOR in node) {
60         writer.writeUTF8(INP_TAG_VENDOR);
61         writer.writeBE!uint(cast(uint)node[INP_TAG_VENDOR].length);
62         foreach(key, ref value; node[INP_TAG_VENDOR].object) {
63             writer.writeBE!uint(cast(uint)key.length);
64             writer.writeUTF8(key);
65             writer.writeBE!uint(cast(uint)value.blob.length);
66             stream.write(value.blob);
67         }
68     }
69 }
70 
71 
72 
73 
74 //
75 //              IMPLEMENTATION DETAILS
76 //
77 private:
78 
79 ubyte[] makeJsonPayload(ref DataNode node) {
80     scope MemoryStream stream = new MemoryStream(1);
81     stream.writeJson(node);
82     return stream.take();
83 }