89 lines
3 KiB
Rust
89 lines
3 KiB
Rust
use std::collections::HashMap;
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use unicode_segmentation::UnicodeSegmentation;
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use errors::Result;
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/// Get word count and estimated reading time
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pub fn get_reading_analytics(content: &str) -> (usize, usize) {
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let word_count: usize = content.unicode_words().count();
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// https://help.medium.com/hc/en-us/articles/214991667-Read-time
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// 275 seems a bit too high though
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(word_count, (word_count / 200))
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}
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/// Resolves an internal link (of the `./posts/something.md#hey` sort) to its absolute link
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pub fn resolve_internal_link(link: &str, permalinks: &HashMap<String, String>) -> Result<String> {
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// First we remove the ./ since that's gutenberg specific
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let clean_link = link.replacen("./", "", 1);
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// Then we remove any potential anchor
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// parts[0] will be the file path and parts[1] the anchor if present
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let parts = clean_link.split('#').collect::<Vec<_>>();
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match permalinks.get(parts[0]) {
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Some(p) => {
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if parts.len() > 1 {
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Ok(format!("{}#{}", p, parts[1]))
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} else {
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Ok(p.to_string())
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}
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}
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None => bail!(format!("Relative link {} not found.", link)),
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}
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}
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#[cfg(test)]
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mod tests {
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use std::collections::HashMap;
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use super::{resolve_internal_link, get_reading_analytics};
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#[test]
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fn can_resolve_valid_internal_link() {
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let mut permalinks = HashMap::new();
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permalinks.insert("pages/about.md".to_string(), "https://vincent.is/about".to_string());
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let res = resolve_internal_link("./pages/about.md", &permalinks).unwrap();
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assert_eq!(res, "https://vincent.is/about");
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}
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#[test]
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fn can_resolve_valid_root_internal_link() {
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let mut permalinks = HashMap::new();
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permalinks.insert("about.md".to_string(), "https://vincent.is/about".to_string());
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let res = resolve_internal_link("./about.md", &permalinks).unwrap();
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assert_eq!(res, "https://vincent.is/about");
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}
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#[test]
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fn can_resolve_internal_links_with_anchors() {
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let mut permalinks = HashMap::new();
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permalinks.insert("pages/about.md".to_string(), "https://vincent.is/about".to_string());
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let res = resolve_internal_link("./pages/about.md#hello", &permalinks).unwrap();
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assert_eq!(res, "https://vincent.is/about#hello");
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}
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#[test]
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fn errors_resolve_inexistant_internal_link() {
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let res = resolve_internal_link("./pages/about.md#hello", &HashMap::new());
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assert!(res.is_err());
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}
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#[test]
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fn reading_analytics_short_text() {
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let (word_count, reading_time) = get_reading_analytics("Hello World");
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assert_eq!(word_count, 2);
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assert_eq!(reading_time, 0);
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}
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#[test]
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fn reading_analytics_long_text() {
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let mut content = String::new();
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for _ in 0..1000 {
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content.push_str(" Hello world");
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}
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let (word_count, reading_time) = get_reading_analytics(&content);
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assert_eq!(word_count, 2000);
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assert_eq!(reading_time, 10);
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}
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}
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