office2pdf 0.5.0

Convert DOCX, XLSX, and PPTX files to PDF using pure Rust
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148

use crate::ir::ColumnLayout;
use crate::parser::units::twips_to_pt;

pub(in super::super) fn scan_column_layouts(xml: &str) -> Vec<Option<ColumnLayout>> {
    let mut reader = quick_xml::Reader::from_str(xml);
    let mut layouts: Vec<Option<ColumnLayout>> = Vec::new();

    let mut in_section_properties = false;
    let mut in_columns = false;
    let mut num_columns: u32 = 1;
    let mut spacing_twips: f64 = 720.0;
    let mut equal_width = true;
    let mut column_widths: Vec<f64> = Vec::new();

    let build_layout =
        |num_columns: u32, spacing_twips: f64, equal_width: bool, column_widths: &[f64]| {
            if num_columns < 2 {
                return None;
            }

            Some(ColumnLayout {
                num_columns,
                spacing: twips_to_pt(spacing_twips),
                column_widths: if !equal_width && !column_widths.is_empty() {
                    Some(column_widths.to_vec())
                } else {
                    None
                },
            })
        };

    loop {
        match reader.read_event() {
            Ok(quick_xml::events::Event::Start(ref element)) => match element.local_name().as_ref()
            {
                b"sectPr" => {
                    in_section_properties = true;
                    num_columns = 1;
                    spacing_twips = 720.0;
                    equal_width = true;
                    column_widths.clear();
                }
                b"cols" if in_section_properties => {
                    in_columns = true;
                    for attribute in element.attributes().flatten() {
                        let key = attribute.key.local_name();
                        if let Ok(value) = attribute.unescape_value() {
                            match key.as_ref() {
                                b"num" => {
                                    if let Ok(parsed) = value.parse::<u32>() {
                                        num_columns = parsed;
                                    }
                                }
                                b"space" => {
                                    if let Ok(parsed) = value.parse::<f64>() {
                                        spacing_twips = parsed;
                                    }
                                }
                                b"equalWidth" => equal_width = value != "0",
                                _ => {}
                            }
                        }
                    }
                }
                b"col" if in_columns => {
                    for attribute in element.attributes().flatten() {
                        if attribute.key.local_name().as_ref() == b"w"
                            && let Ok(value) = attribute.unescape_value()
                            && let Ok(parsed) = value.parse::<f64>()
                        {
                            column_widths.push(twips_to_pt(parsed));
                        }
                    }
                }
                _ => {}
            },
            Ok(quick_xml::events::Event::Empty(ref element)) => match element.local_name().as_ref()
            {
                b"sectPr" => layouts.push(build_layout(1, 720.0, true, &[])),
                b"cols" if in_section_properties => {
                    in_columns = false;
                    for attribute in element.attributes().flatten() {
                        let key = attribute.key.local_name();
                        if let Ok(value) = attribute.unescape_value() {
                            match key.as_ref() {
                                b"num" => {
                                    if let Ok(parsed) = value.parse::<u32>() {
                                        num_columns = parsed;
                                    }
                                }
                                b"space" => {
                                    if let Ok(parsed) = value.parse::<f64>() {
                                        spacing_twips = parsed;
                                    }
                                }
                                b"equalWidth" => equal_width = value != "0",
                                _ => {}
                            }
                        }
                    }
                }
                b"col" if in_columns => {
                    for attribute in element.attributes().flatten() {
                        if attribute.key.local_name().as_ref() == b"w"
                            && let Ok(value) = attribute.unescape_value()
                            && let Ok(parsed) = value.parse::<f64>()
                        {
                            column_widths.push(twips_to_pt(parsed));
                        }
                    }
                }
                _ => {}
            },
            Ok(quick_xml::events::Event::End(ref element)) => match element.local_name().as_ref() {
                b"sectPr" => {
                    layouts.push(build_layout(
                        num_columns,
                        spacing_twips,
                        equal_width,
                        &column_widths,
                    ));
                    in_section_properties = false;
                }
                b"cols" => in_columns = false,
                _ => {}
            },
            Ok(quick_xml::events::Event::Eof) => break,
            Err(_) => break,
            _ => {}
        }
    }

    layouts
}

pub(in super::super) fn extract_column_layout_from_section_property(
    section_prop: &docx_rs::SectionProperty,
) -> Option<ColumnLayout> {
    if section_prop.columns < 2 {
        return None;
    }

    Some(ColumnLayout {
        num_columns: section_prop.columns as u32,
        spacing: twips_to_pt(section_prop.space as f64),
        column_widths: None,
    })
}