umya-spreadsheet 3.0.0

umya-spreadsheet is a library written in pure Rust to read and write xlsx file.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114

use std::io;

use quick_xml::{
    Writer,
    events::{
        BytesDecl,
        Event,
    },
};

use super::{
    XlsxError,
    driver::{
        write_end_tag,
        write_new_line,
        write_start_tag,
    },
};
use crate::{
    helper::const_str::{
        ARC_APP,
        ARC_CORE,
        ARC_CUSTOM,
        COREPROPS_REL,
        CUSTOM_PROPS_REL,
        CUSTOMUI_NS,
        OFCDOC_NS,
        PKG_WORKBOOK,
        REL_NS,
        XPROPS_REL,
    },
    structs::{
        Workbook,
        WriterManager,
    },
};

pub(crate) fn write<W: io::Seek + io::Write>(
    wb: &Workbook,
    writer_mng: &mut WriterManager<W>,
) -> Result<(), XlsxError> {
    let mut writer = Writer::new(io::Cursor::new(Vec::new()));
    // XML header
    writer
        .write_event(Event::Decl(BytesDecl::new(
            "1.0",
            Some("UTF-8"),
            Some("yes"),
        )))
        .unwrap();
    write_new_line(&mut writer);

    // relationships
    write_start_tag(
        &mut writer,
        "Relationships",
        vec![("xmlns", REL_NS).into()],
        false,
    );

    // relationship docProps/app.xml
    write_relationship(&mut writer, "3", XPROPS_REL, ARC_APP, "");

    // relationship docProps/core.xml
    write_relationship(&mut writer, "2", COREPROPS_REL, ARC_CORE, "");

    // relationship docProps/core.xml
    write_relationship(&mut writer, "1", OFCDOC_NS, PKG_WORKBOOK, "");

    // relationship docProps/custom.xml
    if !wb
        .properties()
        .custom_properties()
        .custom_document_property_list()
        .is_empty()
    {
        write_relationship(&mut writer, "4", CUSTOM_PROPS_REL, ARC_CUSTOM, "");
    }

    // a custom UI in workbook ?
    if wb.has_ribbon() {
        write_relationship(
            &mut writer,
            "5",
            CUSTOMUI_NS,
            "xl/todo.xml", // TODO
            "",
        );
    }

    write_end_tag(&mut writer, "Relationships");

    let target = "_rels/.rels";
    writer_mng.add_writer(target, writer)
}

fn write_relationship(
    writer: &mut Writer<io::Cursor<Vec<u8>>>,
    p_id: &str,
    p_type: &str,
    p_target: &str,
    p_target_mode: &str,
) {
    let tag_name = "Relationship";
    let mut attributes: crate::structs::AttrCollection = Vec::new();
    let r_id = format!("rId{p_id}");
    attributes.push(("Id", &r_id).into());
    attributes.push(("Type", p_type).into());
    attributes.push(("Target", p_target).into());
    if !p_target_mode.is_empty() {
        attributes.push(("TargetMode", p_target_mode).into());
    }
    write_start_tag(writer, tag_name, attributes, true);
}