lib3mf_core/writer/
opc_writer.rs

1use crate::error::Result;
2use crate::writer::xml_writer::XmlWriter;
3use std::io::Write;
4
5pub fn write_content_types<W: Write>(writer: W) -> Result<()> {
6    let mut xml = XmlWriter::new(writer);
7    xml.write_declaration()?;
8
9    xml.start_element("Types")
10        .attr(
11            "xmlns",
12            "http://schemas.openxmlformats.org/package/2006/content-types",
13        )
14        .write_start()?;
15
16    // Defaults
17    xml.start_element("Default")
18        .attr("Extension", "rels")
19        .attr(
20            "ContentType",
21            "application/vnd.openxmlformats-package.relationships+xml",
22        )
23        .write_empty()?;
24    xml.start_element("Default")
25        .attr("Extension", "model")
26        .attr(
27            "ContentType",
28            "application/vnd.ms-package.3dmanufacturing-3dmodel+xml",
29        )
30        .write_empty()?;
31    xml.start_element("Default")
32        .attr("Extension", "png")
33        .attr("ContentType", "image/png")
34        .write_empty()?;
35
36    // Don't enforce Override for 3D/3dmodel.model if extension match works,
37    // but spec usually recommends explicit override for parts.
38    // For now, minimal valid set.
39
40    xml.end_element("Types")?;
41    Ok(())
42}
43
44pub fn write_relationships<W: Write>(
45    writer: W,
46    model_part: &str,
47    thumbnail_part: Option<&str>,
48) -> Result<()> {
49    let mut xml = XmlWriter::new(writer);
50    xml.write_declaration()?;
51
52    xml.start_element("Relationships")
53        .attr(
54            "xmlns",
55            "http://schemas.openxmlformats.org/package/2006/relationships",
56        )
57        .write_start()?;
58
59    xml.start_element("Relationship")
60        .attr("Target", model_part)
61        .attr("Id", "rel0")
62        .attr(
63            "Type",
64            "http://schemas.microsoft.com/3dmanufacturing/2013/01/3dmodel",
65        )
66        .write_empty()?;
67
68    if let Some(thumb) = thumbnail_part {
69        xml.start_element("Relationship")
70            .attr("Target", thumb)
71            .attr("Id", "rel1")
72            .attr(
73                "Type",
74                "http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail",
75            )
76            .write_empty()?;
77    }
78
79    xml.end_element("Relationships")?;
80    Ok(())
81}
lib3mf_core/writer/opc_writer.rs

lib3mf_core/writer/
opc_writer.rs
