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@ -21,6 +21,15 @@ use std::{
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use once_cell::sync::{Lazy, OnceCell};
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use serde::{Deserialize, Serialize};
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fn deserialize_regex<'de, D>(deserializer: D) -> Result<Option<Regex>, D::Error>
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where
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D: serde::Deserializer<'de>,
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{
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Option::<String>::deserialize(deserializer)?
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.map(|buf| Regex::new(&buf).map_err(serde::de::Error::custom))
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.transpose()
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}
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#[derive(Debug, Serialize, Deserialize)]
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pub struct Configuration {
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pub language: Vec<LanguageConfiguration>,
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@ -42,7 +51,8 @@ pub struct LanguageConfiguration {
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pub auto_format: bool,
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// content_regex
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// injection_regex
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#[serde(default, skip_serializing, deserialize_with = "deserialize_regex")]
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injection_regex: Option<Regex>,
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// first_line_regex
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//
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#[serde(skip)]
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@ -243,6 +253,30 @@ impl Loader {
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.cloned()
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}
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pub fn language_configuration_for_injection_string(
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&self,
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string: &str,
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) -> Option<Arc<LanguageConfiguration>> {
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let mut best_match_length = 0;
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let mut best_match_position = None;
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for (i, configuration) in self.language_configs.iter().enumerate() {
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if let Some(injection_regex) = &configuration.injection_regex {
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if let Some(mat) = injection_regex.find(string) {
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let length = mat.end() - mat.start();
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if length > best_match_length {
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best_match_position = Some(i);
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best_match_length = length;
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}
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}
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}
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}
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if let Some(i) = best_match_position {
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let configuration = &self.language_configs[i];
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return Some(configuration.clone());
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}
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None
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}
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pub fn language_configs_iter(&self) -> impl Iterator<Item = &Arc<LanguageConfiguration>> {
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self.language_configs.iter()
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}
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