53 lines
1.4 KiB
Rust
53 lines
1.4 KiB
Rust
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use std::collections::HashMap;
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use std::fs::File;
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use std::io::prelude::*;
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use std::path::PathBuf;
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use toml::{Value as Toml};
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use errors::{Result, ResultExt};
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/// Holds the data from a `theme.toml` file.
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/// There are other fields than `extra` in it but Gutenberg
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/// itself doesn't care about them.
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
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pub struct Theme {
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/// All user params set in [extra] in the theme.toml
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pub extra: HashMap<String, Toml>,
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}
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impl Theme {
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/// Parses a TOML string to our Theme struct
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pub fn parse(content: &str) -> Result<Theme> {
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let theme = match content.parse::<Toml>() {
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Ok(t) => t,
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Err(e) => bail!(e),
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};
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let mut extra = HashMap::new();
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if let Some(ref theme_table) = theme.as_table() {
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if let Some(ex) = theme_table.get("extra") {
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if ex.is_table() {
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extra = ex.clone().try_into().unwrap();
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}
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}
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} else {
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bail!("Expected the `theme.toml` to be a TOML table")
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}
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Ok(Theme {extra})
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}
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/// Parses a theme file from the given path
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pub fn from_file(path: &PathBuf) -> Result<Theme> {
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let mut content = String::new();
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File::open(path)
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.chain_err(|| "No `theme.toml` file found. Are you in the right directory?")?
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.read_to_string(&mut content)?;
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Theme::parse(&content)
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}
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}
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