tikz-gallery-generator

diff --git a/src/main.rs b/src/main.rs
@@ -1,24 +1,23 @@
+use image::io::Reader as ImageReader;
+use image::DynamicImage;
 use std::env;
+use std::fs::{self, File};
 use std::io::{self, Write};
+use std::path::PathBuf;
 use std::process::exit;
-use std::fs::{self, File};
-use std::path::{PathBuf};
-use types::{PictureInfo, Escaped};
-use serde_yaml;
-use image::DynamicImage;
-use image::io::Reader as ImageReader;
-use webp;
+use types::{Escaped, PictureInfo};
 
 mod types;
 
-const PAGE_TITLE: &'static str = "Pablo's Photo Gallery";
+const PAGE_TITLE: &str = "Pablo's Photo Gallery";
 
-const IMAGE_QUALITY: f32 = 50.0; /// WebP image quality
+/// WebP image quality
+const IMAGE_QUALITY: f32 = 50.0;
 
 /// Target height of the thumbnails, depending on wether the image is vertical
 /// or horizontal
 const HORIZONTAL_THUMB_HEIGHT: u32 = 300;
-const VERTICAL_THUMB_HEIGHT: u32 = 800;
+const VERTICAL_THUMB_HEIGHT:   u32 = 800;
 
 fn main() -> io::Result<()> {
     let args: Vec<String> = env::args().collect();
@@ -29,28 +28,28 @@ fn main() -> io::Result<()> {
             eprintln!("ERROR: Expected one command line argument, found none");
             usage(program);
             exit(1)
-        },
+        }
         [program, ..] => {
             eprintln!("ERROR: Expected one command line argument, found many");
             usage(program);
             exit(1)
-        },
-        [] => unreachable!("args always contains at least the input program")
+        }
+        [] => unreachable!("args always contains at least the input program"),
     };
 
-    let f = File::open(&config);
+    let f = File::open(config);
     match f.map(serde_yaml::from_reader::<_, Vec<PictureInfo>>) {
         // Error opening the config file
         Err(err) => {
             eprintln!("ERROR: Couldn't open {config:?}: {err}");
             Err(err)
-        },
+        }
         // Error parsing the config file
         Ok(Err(err)) => {
             eprintln!("ERROR: Couldn't parse {config:?}: {err}");
             usage_config();
             exit(1)
-        },
+        }
         Ok(Ok(pic_infos)) => render_gallery(pic_infos),
     }
 }
@@ -63,8 +62,11 @@ fn render_gallery(pic_infos: Vec<PictureInfo>) -> io::Result<()> {
         target_path.push(&pic.file_name);
 
         if let Err(err) = fs::copy(&pic.path, &target_path) {
-            eprintln!("ERROR: Couldn't copy file {src:?} to {target:?}: {err}",
-                      src = pic.path, target = target_path);
+            eprintln!(
+                "ERROR: Couldn't copy file {src:?} to {target:?}: {err}",
+                src = pic.path,
+                target = target_path
+            );
             return Err(err);
         }
     }
@@ -72,13 +74,17 @@ fn render_gallery(pic_infos: Vec<PictureInfo>) -> io::Result<()> {
     // Warn the user if a particular path doesn't have an associated alt string
     for pic in &pic_infos {
         if pic.alt.is_empty() {
-            eprintln!("WARNING: Empty text alternative was specified for the file {name:?}",
-                      name = pic.file_name);
+            eprintln!(
+                "WARNING: Empty text alternative was specified for the file {name:?}",
+                name = pic.file_name
+            );
         }
     }
 
     // TODO: Parallelize this
-    for pic in &pic_infos { render_thumbnail(pic)?; }
+    for pic in &pic_infos {
+        render_thumbnail(pic)?;
+    }
 
     render_index(&pic_infos)?;
 
@@ -100,9 +106,11 @@ fn render_index(pic_infos: &Vec<PictureInfo>) -> io::Result<()> {
     write_head(&mut f)?;
 
     for pic in pic_infos {
-        writeln!(f,
+        writeln!(
+            f,
             "<link rel=\"preload\" as=\"image\" href=\"/assets/thumbs/{name}.webp\">",
-            name = Escaped(&pic.file_name))?;
+            name = Escaped(&pic.file_name)
+        )?;
     }
 
     writeln!(f, "</head>")?;
@@ -114,11 +122,17 @@ fn render_index(pic_infos: &Vec<PictureInfo>) -> io::Result<()> {
 
     for pic in pic_infos {
         writeln!(f, "<li>")?;
-        writeln!(f, "<a aria-label=\"{name}\" href=\"/photos/{name}.html\">",
-                 name = Escaped(&pic.file_name))?;
-        writeln!(f, "<img alt=\"{alt}\" src=\"/assets/thumbs/{name}.webp\">",
-                 alt = Escaped(&pic.alt),
-                 name = Escaped(&pic.file_name))?;
+        writeln!(
+            f,
+            "<a aria-label=\"{name}\" href=\"/photos/{name}.html\">",
+            name = Escaped(&pic.file_name)
+        )?;
+        writeln!(
+            f,
+            "<img alt=\"{alt}\" src=\"/assets/thumbs/{name}.webp\">",
+            alt = Escaped(&pic.alt),
+            name = Escaped(&pic.file_name)
+        )?;
         writeln!(f, "</a>\n</li>")?;
     }
 
@@ -147,12 +161,17 @@ fn render_pic_page(pic: &PictureInfo) -> io::Result<()> {
     write_license(&mut f)?;
     writeln!(f, "<html lang=\"en\">")?;
     writeln!(f, "<head>")?;
-    writeln!(f, "<title>{PAGE_TITLE} &dash; {name}</title>",
-             name = Escaped(&pic.file_name))?;
+    writeln!(
+        f,
+        "<title>{PAGE_TITLE} &dash; {name}</title>",
+        name = Escaped(&pic.file_name)
+    )?;
     write_head(&mut f)?;
-    writeln!(f,
-             "<link rel=\"preload\" as=\"image\" href=\"/assets/photos/{n}\">",
-             n = Escaped(&pic.file_name))?;
+    writeln!(
+        f,
+        "<link rel=\"preload\" as=\"image\" href=\"/assets/photos/{n}\">",
+        n = Escaped(&pic.file_name)
+    )?;
     writeln!(f, "</head>")?;
 
     writeln!(f, "<body>")?;
@@ -161,9 +180,12 @@ fn render_pic_page(pic: &PictureInfo) -> io::Result<()> {
     writeln!(f, "<main>")?;
     writeln!(f, "<figure>")?;
     writeln!(f, "<div id=\"picture-container\">")?;
-    writeln!(f, "<img alt=\"{alt}\" src=\"/assets/photos/{file_name}\">",
-             alt = Escaped(&pic.alt),
-             file_name = Escaped(&pic.file_name))?;
+    writeln!(
+        f,
+        "<img alt=\"{alt}\" src=\"/assets/photos/{file_name}\">",
+        alt = Escaped(&pic.alt),
+        file_name = Escaped(&pic.file_name)
+    )?;
     writeln!(f, "</div>")?;
     writeln!(f, "</figure>")?;
     writeln!(f, "</main>")?;
@@ -187,18 +209,20 @@ fn render_thumbnail(pic: &PictureInfo) -> io::Result<()> {
     }
 
     let mut thumb_file = match File::create(&thumb_path) {
-        Ok(f) => f,
+        Ok(f)    => f,
         Err(err) => {
             eprintln!("ERROR: Couldn't open WebP thumbnail file {thumb_path:?}: {err}");
             exit(1);
-        },
+        }
     };
 
     let img_reader = match ImageReader::open(&pic.path) {
         Ok(r)    => r,
         Err(err) => {
-            eprintln!("ERROR: Couldn't open file {path:?} to render WebP thumbnail: {err}",
-                      path = pic.file_name);
+            eprintln!(
+                "ERROR: Couldn't open file {path:?} to render WebP thumbnail: {err}",
+                path = pic.file_name
+            );
             exit(1);
         }
     };
@@ -206,8 +230,10 @@ fn render_thumbnail(pic: &PictureInfo) -> io::Result<()> {
     let img = match img_reader.decode() {
         Ok(img)  => img,
         Err(err) => {
-            eprintln!("ERROR: Failed to decode image file {name:?}: {err}",
-                      name = pic.file_name);
+            eprintln!(
+                "ERROR: Failed to decode image file {name:?}: {err}",
+                name = pic.file_name
+            );
             exit(1);
         }
     };
@@ -245,32 +271,65 @@ fn write_nav(f: &mut File) -> io::Result<()> {
 
 fn write_footer(f: &mut File) -> io::Result<()> {
     writeln!(f, "<footer>")?;
-    writeln!(f, "made with 💛 by <a role=\"author\" href=\"https://pablopie.xyz\">@pablo</a>")?;
+    writeln!(
+        f,
+        "made with 💛 by <a role=\"author\" href=\"https://pablopie.xyz\">@pablo</a>"
+    )?;
     writeln!(f, "</footer>")
 }
 
 /// Prints the common head elements to a given file
 fn write_head(f: &mut File) -> io::Result<()> {
-    writeln!(f, "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">")?;
+    writeln!(
+        f,
+        "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">"
+    )?;
     writeln!(f, "<meta name=\"author\" content=\"Pablo\">")?;
     writeln!(f, "<meta name=\"copyright\" content=\"GPLv2\">")?;
-    writeln!(f, "<meta content=\"text/html; charset=utf-8\" http-equiv=\"content-type\">")?;
+    writeln!(
+        f,
+        "<meta content=\"text/html; charset=utf-8\" http-equiv=\"content-type\">"
+    )?;
     writeln!(f, "<link rel=\"icon\" href=\"/assets/favicon.ico\" type=\"image/x-icon\" sizes=\"16x16 24x24 32x32\">")?;
     writeln!(f, "<link rel=\"stylesheet\" href=\"/styles.css\">")
 }
 
 /// Prints a HTML comment with GPL licensing info
 fn write_license(f: &mut File) -> io::Result<()> {
-    writeln!(f, "<!-- This program is free software: you can redistribute it and/or modify")?;
-    writeln!(f, "     it under the terms of the GNU General Public License as published by")?;
-    writeln!(f, "     the Free Software Foundation, either version 3 of the License, or")?;
+    writeln!(
+        f,
+        "<!-- This program is free software: you can redistribute it and/or modify"
+    )?;
+    writeln!(
+        f,
+        "     it under the terms of the GNU General Public License as published by"
+    )?;
+    writeln!(
+        f,
+        "     the Free Software Foundation, either version 3 of the License, or"
+    )?;
     writeln!(f, "     (at your option) any later version.\n")?;
-    writeln!(f, "     This program is distributed in the hope that it will be useful,")?;
-    writeln!(f, "     but WITHOUT ANY WARRANTY; without even the implied warranty of")?;
-    writeln!(f, "     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the")?;
+    writeln!(
+        f,
+        "     This program is distributed in the hope that it will be useful,"
+    )?;
+    writeln!(
+        f,
+        "     but WITHOUT ANY WARRANTY; without even the implied warranty of"
+    )?;
+    writeln!(
+        f,
+        "     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the"
+    )?;
     writeln!(f, "     GNU General Public License for more details.\n")?;
-    writeln!(f, "     You should have received a copy of the GNU General Public License")?;
-    writeln!(f, "     along with this program. If not, see <https://www.gnu.org/licenses/>. -->")
+    writeln!(
+        f,
+        "     You should have received a copy of the GNU General Public License"
+    )?;
+    writeln!(
+        f,
+        "     along with this program. If not, see <https://www.gnu.org/licenses/>. -->"
+    )
 }
 
 fn usage(program: &str) {

diff --git a/src/types.rs b/src/types.rs
@@ -1,6 +1,9 @@
-use std::path::PathBuf;
+use serde::{
+    de::{Deserializer, Error, Unexpected},
+    Deserialize,
+};
 use std::fmt::{self, Display};
-use serde::{Deserialize, de::{Deserializer, Error, Unexpected}};
+use std::path::PathBuf;
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct PictureInfo {
@@ -13,30 +16,31 @@ pub struct Escaped<'a>(pub &'a str);
 
 impl<'de> Deserialize<'de> for PictureInfo {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where D: Deserializer<'de>
+    where
+        D: Deserializer<'de>,
     {
         #[derive(Deserialize)]
-        struct Info { path: String, alt: String, }
-        let Info { path: path_str, alt } = Info::deserialize(deserializer)?;
+        struct Info {
+            path: String,
+            alt: String,
+        }
+
+        let Info { path: path_str, alt, } = Info::deserialize(deserializer)?;
 
         let mut path = PathBuf::new();
         path.push(path_str.clone());
 
         if let Some(file_name) = path.file_name().and_then(|s| s.to_str()) {
-            Ok(
-                Self {
-                    path: path.clone(),
-                    alt: alt.trim().to_string(),
-                    file_name: String::from(file_name)
-                }
-            )
+            Ok(Self {
+                path: path.clone(),
+                alt: alt.trim().to_string(),
+                file_name: String::from(file_name),
+            })
         } else {
-            Err(
-                D::Error::invalid_value(
-                    Unexpected::Str(&path_str),
-                    &"Couldn't parse file name"
-                )
-            )
+            Err(D::Error::invalid_value(
+                Unexpected::Str(&path_str),
+                &"Couldn't parse file name",
+            ))
         }
     }
 }