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132 lines
3.7 KiB
Rust
132 lines
3.7 KiB
Rust
/*
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* Snekdown - Custom Markdown flavour and parser
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* Copyright (C) 2021 Trivernis
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* See LICENSE for more information.
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*/
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use crate::elements::{Metadata, MetadataValue};
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use crate::settings::feature_settings::FeatureSettings;
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use crate::settings::image_settings::ImageSettings;
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use crate::settings::import_settings::ImportSettings;
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use crate::settings::metadata_settings::MetadataSettings;
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use crate::settings::pdf_settings::PDFSettings;
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use crate::settings::style_settings::StyleSettings;
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use config::{ConfigError, Source};
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use serde::{Deserialize, Serialize};
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use std::collections::HashMap;
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use std::error::Error;
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use std::fmt::{self, Display};
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use std::io;
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use std::mem;
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use std::path::PathBuf;
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pub mod feature_settings;
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pub mod image_settings;
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pub mod import_settings;
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pub mod metadata_settings;
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pub mod pdf_settings;
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pub mod style_settings;
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pub type SettingsResult<T> = Result<T, SettingsError>;
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#[derive(Debug)]
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pub enum SettingsError {
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IoError(io::Error),
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ConfigError(ConfigError),
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TomlError(toml::ser::Error),
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}
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impl Display for SettingsError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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Self::IoError(e) => write!(f, "IO Error: {}", e),
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Self::ConfigError(e) => write!(f, "Config Error: {}", e),
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Self::TomlError(e) => write!(f, "Toml Error: {}", e),
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}
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}
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}
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impl Error for SettingsError {}
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impl From<io::Error> for SettingsError {
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fn from(e: io::Error) -> Self {
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Self::IoError(e)
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}
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}
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impl From<ConfigError> for SettingsError {
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fn from(e: ConfigError) -> Self {
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Self::ConfigError(e)
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}
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}
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impl From<toml::ser::Error> for SettingsError {
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fn from(e: toml::ser::Error) -> Self {
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Self::TomlError(e)
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}
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}
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#[derive(Serialize, Deserialize, Clone, Debug, Default)]
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pub struct Settings {
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pub metadata: MetadataSettings,
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pub features: FeatureSettings,
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pub imports: ImportSettings,
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pub pdf: PDFSettings,
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pub images: ImageSettings,
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pub style: StyleSettings,
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pub custom_attributes: HashMap<String, String>,
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}
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impl Source for Settings {
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fn clone_into_box(&self) -> Box<dyn Source + Send + Sync> {
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Box::new(self.clone())
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}
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fn collect(&self) -> Result<HashMap<String, config::Value>, config::ConfigError> {
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let source_str =
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toml::to_string(&self).map_err(|e| config::ConfigError::Foreign(Box::new(e)))?;
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let result = toml::de::from_str(&source_str)
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.map_err(|e| config::ConfigError::Foreign(Box::new(e)))?;
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Ok(result)
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}
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}
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impl Settings {
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/// Loads the settings from the specified path
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pub fn load(path: PathBuf) -> SettingsResult<Self> {
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let mut settings = config::Config::default();
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settings
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.merge(Self::default())?
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.merge(config::File::from(path))?;
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let settings: Self = settings.try_into()?;
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Ok(settings)
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}
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/// Merges the current settings with the settings from the given path
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/// returning updated settings
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pub fn merge(&mut self, path: PathBuf) -> SettingsResult<()> {
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let mut settings = config::Config::default();
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settings
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.merge(self.clone())?
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.merge(config::File::from(path))?;
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let mut settings: Self = settings.try_into()?;
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mem::swap(self, &mut settings); // replace the old settings with the new ones
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Ok(())
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}
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pub fn append_metadata<M: Metadata>(&mut self, metadata: M) {
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let entries = metadata.get_string_map();
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for (key, value) in entries {
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self.custom_attributes.insert(key, value);
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}
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}
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pub fn set_from_meta(&mut self, key: &str, value: MetadataValue) {
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self.custom_attributes
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.insert(key.to_string(), value.to_string());
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}
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}
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