dxpdf 0.2.8

A fast DOCX-to-PDF converter powered by Skia
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//! Parser for `word/settings.xml`.

use serde::Deserialize;

use crate::docx::dimension::{Dimension, Twips};
use crate::docx::error::Result;
use crate::docx::model::{DocumentSettings, RevisionSaveId};
use crate::docx::parse::primitives::OnOff;
use crate::docx::parse::serde_xml::from_xml;

/// Parse `word/settings.xml`. Entry point: deserializes into an intermediate
/// schema, then maps to the model type.
pub fn parse_settings(data: &[u8]) -> Result<DocumentSettings> {
    from_xml::<SettingsXml>(data).map(Into::into)
}

#[derive(Deserialize, Default)]
struct SettingsXml {
    #[serde(rename = "defaultTabStop", default)]
    default_tab_stop: Option<DimensionVal<Twips>>,
    #[serde(rename = "evenAndOddHeaders", default)]
    even_and_odd_headers: Option<OnOff>,
    #[serde(default)]
    rsids: Option<RsidsXml>,
}

#[derive(Deserialize, Default)]
struct RsidsXml {
    #[serde(rename = "rsidRoot", default)]
    rsid_root: Option<StringVal>,
    #[serde(rename = "rsid", default)]
    rsids: Vec<StringVal>,
}

#[derive(Deserialize)]
#[serde(bound(deserialize = "U: crate::docx::dimension::Unit"))]
struct DimensionVal<U: crate::docx::dimension::Unit> {
    #[serde(rename = "@val")]
    val: Dimension<U>,
}

#[derive(Deserialize)]
struct StringVal {
    #[serde(rename = "@val")]
    val: String,
}

impl From<SettingsXml> for DocumentSettings {
    fn from(x: SettingsXml) -> Self {
        let mut s = DocumentSettings::default();
        if let Some(t) = x.default_tab_stop {
            s.default_tab_stop = t.val;
        }
        if let Some(OnOff(on)) = x.even_and_odd_headers {
            s.even_and_odd_headers = on;
        }
        if let Some(r) = x.rsids {
            if let Some(root) = r.rsid_root {
                s.rsid_root = RevisionSaveId::from_hex(&root.val);
            }
            s.rsids = r
                .rsids
                .into_iter()
                .filter_map(|v| RevisionSaveId::from_hex(&v.val))
                .collect();
        }
        s
    }
}