38 lines
1.1 KiB
Rust
38 lines
1.1 KiB
Rust
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use handlebars::{Context, Handlebars, Helper, HelperDef, RenderContext, RenderError, ScopedJson};
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use serde_json::Value;
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use crate::vfs::{self, DynDir, VPath};
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pub struct DirHelper {
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site: String,
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dir: DynDir,
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}
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impl DirHelper {
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pub fn new(site: &str, dir: DynDir) -> Self {
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Self {
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site: site.to_owned(),
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dir,
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}
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}
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}
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impl HelperDef for DirHelper {
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fn call_inner<'reg: 'rc, 'rc>(
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&self,
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h: &Helper<'reg, 'rc>,
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_: &'reg Handlebars<'reg>,
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_: &'rc Context,
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_: &mut RenderContext<'reg, 'rc>,
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) -> Result<ScopedJson<'reg, 'rc>, RenderError> {
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if let Some(path) = h.param(0).and_then(|v| v.value().as_str()) {
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let vpath = VPath::try_new(path).map_err(|e| RenderError::new(e.to_string()))?;
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let url = vfs::url(&self.site, &self.dir, vpath)
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.ok_or_else(|| RenderError::new("path is not anchored anywhere"))?;
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Ok(ScopedJson::Derived(Value::String(url)))
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} else {
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Err(RenderError::new("missing path string"))
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}
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}
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}
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