Reimplement in Go

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-"checksum unic-ucd-version 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "96bd2f2237fe450fcd0a1d2f5f4e91711124f7857ba2e964247776ebeeb7b0c4"
-"checksum unicase 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
-"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
-"checksum version_check 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
-"checksum walkdir 2.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "777182bc735b6424e1a57516d35ed72cb8019d85c8c9bf536dccb3445c1a2f7d"
-"checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
-"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-"checksum winapi-util 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
-"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

Cargo.toml

@@ -1,18 +0,0 @@
-[package]
-name = "kiln"
-description = "A simple static site generator"
-version = "0.1.0"
-authors = ["adnano <me@adnano.co>"]
-edition = "2018"
-license = "BlueOak-1.0.0"
-
-[dependencies]
-chrono = "0.4"
-lazy_static = "1.4"
-pulldown-cmark = { version = "0.7", default-features = false }
-regex = "1.3"
-rsass = "0.13"
-serde = "1.0"
-serde_derive = "1.0"
-tera = "1.2"
-toml = "0.5"

README.md

@@ -1,14 +1,13 @@
 # kiln
 
-A simple static site generator built in Rust.
+A simple static site generator for Gemini.
 
 ## Features
 
-- Zero-config
+- Zero configuration
 - Simple and fast
-- [Tera] templates
-- [Sass] stylesheets
-- Markdown
+- Gemini support
+- Go templates
 
 ## Usage
 
@@ -16,5 +15,44 @@ A simple static site generator built in Rust.
 kiln
 ```
 
-[Tera]: https://tera.netlify.com
-[Sass]: https://sass-lang.com
+## Directory Structure
+
+A kiln site is organized in the following way:
+
+```
+src/				Site source
+templates/ 			Templates
+	page.gmi		Page template
+	section.gmi 	Section template
+dst/				Site destination
+```
+
+Running `kiln` takes the contents in `src`, runs them through the templates in
+`templates`, and outputs the result to `dst`.
+
+## Pages
+
+Page templates are provided with the following information:
+
+- `Title`: The title parsed from the first heading in the file
+- `Date`: The date parsed from the filename (e.g. `2020-09-22-hello-world.gmi`)
+- `Path`: Relative path to the page
+- `Permalink`: Permalink to the page
+- `Content`: The contents of the file (including the title)
+
+## Sections
+
+Section templates are provided with the following information:
+
+- `Path`: Relative path to the section
+- `Permalink`: Permalink to the section
+- `Pages`: The pages in this section
+
+## Templates
+
+Templates are located in the `templates` directory.
+
+There are currently two supported templates:
+
+- `page.gmi`: The template used for pages
+- `section.gmi`: The template used for sections

go.mod

@@ -0,0 +1,3 @@
+module kiln
+
+go 1.15

index.go

@@ -0,0 +1,80 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+type Index struct {
+	Files map[string][]byte
+	Dirs  map[string][]string
+}
+
+func NewIndex() *Index {
+	return &Index{
+		Files: map[string][]byte{},
+		Dirs:  map[string][]string{},
+	}
+}
+
+// ReadDir reads a directory and indexes the files and directories within it.
+func (index *Index) ReadDir(srcDir string, dstDir string) error {
+	entries, err := ioutil.ReadDir(srcDir)
+	if err != nil {
+		return err
+	}
+
+	for _, entry := range entries {
+		name := entry.Name()
+		srcPath := filepath.Join(srcDir, name)
+		dstPath := filepath.Join(dstDir, name)
+
+		if entry.IsDir() {
+			index.Dirs[dstPath] = []string{}
+			index.ReadDir(srcPath, dstPath)
+		} else {
+			content, err := ioutil.ReadFile(srcPath)
+			if err != nil {
+				return err
+			}
+
+			index.Files[dstPath] = content
+			index.Dirs[dstDir] = append(index.Dirs[dstDir], dstPath)
+		}
+	}
+	return nil
+}
+
+// Write writes the contents of the Index to the provided destination directory.
+func (index *Index) Write(dstDir string) error {
+	// Empty the destination directory
+	if err := os.RemoveAll(dstDir); err != nil {
+		return err
+	}
+	if err := os.MkdirAll(dstDir, 0755); err != nil {
+		return err
+	}
+
+	for path := range index.Files {
+		// Create any parent directories
+		if dir := filepath.Dir(path); dir != "." {
+			dstPath := filepath.Join(dstDir, dir)
+			if err := os.MkdirAll(dstPath, 0755); err != nil {
+				return err
+			}
+		}
+
+		// Write the file
+		dstPath := filepath.Join(dstDir, path)
+		f, err := os.Create(dstPath)
+		if err != nil {
+			return err
+		}
+		data := index.Files[path]
+		if _, err := f.Write(data); err != nil {
+			return err
+		}
+	}
+	return nil
+}

main.go

@@ -0,0 +1,85 @@
+package main
+
+import (
+	"log"
+	"time"
+)
+
+func main() {
+	if err := run(); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func run() error {
+	index := NewIndex()
+	if err := index.ReadDir("src", ""); err != nil {
+		return err
+	}
+	manipulator, err := NewManipulator()
+	if err != nil {
+		return err
+	}
+	if err := manipulator.Manipulate(index); err != nil {
+		return err
+	}
+
+	if err := index.Write("dst"); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Page represents a page.
+type Page struct {
+	// The path to this page.
+	Path string
+	// The permalink to this page.
+	Permalink string
+	// The title of this page, parsed from the Gemini contents.
+	Title string
+	// The date of the page. Dates are specified in the filename.
+	// Ex: 2020-09-22-hello-world.gmi
+	Date time.Time
+	// The content of this page.
+	Content string
+}
+
+func NewPage(path string, content string) *Page {
+	// TODO: Parse date from path name
+	permalink := "/" + path
+	return &Page{
+		Path:      path,
+		Permalink: permalink,
+		Content:   content,
+	}
+}
+
+// Section represents a section (i.e., a directory).
+type Section struct {
+	// The path to this section.
+	Path string
+	// The permalink to this section.
+	Permalink string
+	// The pages in this section.
+	Pages []*Page
+}
+
+// NewSection returns a new Section with the given path.
+func NewSection(path string) *Section {
+	var permalink string
+	if path == "" {
+		permalink = "/"
+	} else {
+		permalink = "/" + path + "/"
+	}
+	return &Section{
+		Path:      path,
+		Permalink: permalink,
+	}
+}
+
+// Sort sorts pages by date.
+func (s *Section) Sort() {
+	// TODO: Implement this
+}

manipulate.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"path/filepath"
+	"strings"
+	"text/template"
+)
+
+type Manipulator struct {
+	Pages map[string]*Page
+
+	// Templates
+	Templates *template.Template
+}
+
+func NewManipulator() (*Manipulator, error) {
+	tmpl, err := template.New("templates").ParseGlob("templates/*.gmi")
+	if err != nil {
+		return nil, err
+	}
+	return &Manipulator{
+		Pages:     map[string]*Page{},
+		Templates: tmpl,
+	}, nil
+}
+
+func (m *Manipulator) Manipulate(index *Index) error {
+	for path := range index.Files {
+		switch filepath.Ext(path) {
+		case ".gmi":
+			// Gather page data
+			content := string(index.Files[path])
+			page := NewPage(path, content)
+
+			builder := &strings.Builder{}
+			tmpl := m.Templates.Lookup("page.gmi")
+			if err := tmpl.Execute(builder, page); err != nil {
+				return err
+			}
+			page.Content = builder.String()
+			m.Pages[path] = page
+			index.Files[path] = []byte(page.Content)
+		}
+	}
+
+	for dir := range index.Dirs {
+		// Load section data
+		section := NewSection(dir)
+		for _, path := range index.Dirs[dir] {
+			switch filepath.Ext(path) {
+			case ".gmi":
+				section.Pages = append(section.Pages, m.Pages[path])
+			}
+		}
+
+		dstPath := filepath.Join(dir, "index.gmi")
+		builder := &strings.Builder{}
+		tmpl := m.Templates.Lookup("section.gmi")
+		if err := tmpl.Execute(builder, section); err != nil {
+			return err
+		}
+		index.Files[dstPath] = []byte(builder.String())
+	}
+
+	return nil
+}

src/index.rs

@@ -1,89 +0,0 @@
-use std::io::Result;
-use std::path::{Path, PathBuf};
-use std::{env, fs, ops, slice};
-
-#[derive(Default)]
-pub struct Index(Vec<(PathBuf, Vec<u8>)>);
-
-impl Index {
-    pub fn from(dir: impl AsRef<Path>) -> Result<Index> {
-        let input = dir.as_ref();
-        let output = Path::new("");
-        let mut index = Index::default();
-        IndexDir::new(input, output, &mut index).index()?;
-        Ok(index)
-    }
-
-    pub fn insert(&mut self, key: PathBuf, val: Vec<u8>) {
-        self.0.push((key, val));
-    }
-
-    pub fn remove(&mut self, index: usize) {
-        self.0.remove(index);
-    }
-
-    pub fn iter_mut(&mut self) -> slice::IterMut<(PathBuf, Vec<u8>)> {
-        self.0.iter_mut()
-    }
-
-    pub fn write(&self, output: impl AsRef<Path>) -> Result<()> {
-        let output = output.as_ref();
-        if output.exists() {
-            // empty the output directory
-            fs::remove_dir_all(output)?;
-        }
-        fs::create_dir_all(output)?;
-        env::set_current_dir(output)?;
-        for (path, contents) in &self.0 {
-            if let Some(parent) = path.parent() {
-                fs::create_dir_all(&parent)?;
-            }
-            fs::write(&path, &contents)?;
-        }
-        Ok(())
-    }
-}
-
-impl ops::Index<usize> for Index {
-    type Output = (PathBuf, Vec<u8>);
-    fn index(&self, i: usize) -> &(PathBuf, Vec<u8>) {
-        &self.0[i]
-    }
-}
-
-impl ops::IndexMut<usize> for Index {
-    fn index_mut(&mut self, i: usize) -> &mut (PathBuf, Vec<u8>) {
-        &mut self.0[i]
-    }
-}
-
-struct IndexDir<'a> {
-    input: &'a Path,
-    output: &'a Path,
-    index: &'a mut Index,
-}
-
-impl<'a> IndexDir<'a> {
-    fn new(input: &'a Path, output: &'a Path, index: &'a mut Index) -> IndexDir<'a> {
-        IndexDir {
-            input,
-            output,
-            index,
-        }
-    }
-
-    fn index(self) -> Result<()> {
-        for entry in fs::read_dir(self.input)? {
-            let path = entry?.path();
-            let mut output = self.output.to_path_buf();
-            output.push(path.file_name().unwrap());
-            if path.is_file() {
-                let contents = fs::read(&path)?;
-                self.index.insert(output, contents);
-            } else if path.is_dir() {
-                IndexDir::new(&path, &output, self.index).index()?;
-            }
-        }
-        Ok(())
-    }
-}

src/main.rs

@@ -1,18 +0,0 @@
-mod index;
-mod manipulate;
-mod page;
-mod result;
-mod section;
-
-use std::error::Error;
-
-use index::Index;
-use manipulate::manipulate;
-
-fn main() -> Result<T, Box<dyn Error>> {
-    let mut index = Index::from("src")?;
-    manipulate(&mut index)?;
-    index.write("public")?;
-
-    Ok(())
-}

src/manipulate.rs

@@ -1,127 +0,0 @@
-use std::ffi::OsStr;
-
-use tera::{Context, Result, Template, Tera};
-
-use crate::index::Index;
-use crate::page::Page;
-use crate::section::Section;
-
-pub fn manipulate(index: &mut Index) -> Result<()> {
-    Manipulater::new(index)?.manipulate()
-}
-
-struct Manipulater<'a> {
-    index: &'a mut Index,
-    pages: Vec<(usize, Page)>,
-    sections: Vec<usize>,
-    templates: Vec<usize>,
-    ignored: Vec<usize>,
-    tera: Tera,
-}
-
-impl<'a> Manipulater<'a> {
-    fn new(index: &'a mut Index) -> Result<Manipulater<'a>> {
-        Ok(Manipulater {
-            index,
-            pages: Vec::new(),
-            sections: Vec::new(),
-            templates: Vec::new(),
-            ignored: Vec::new(),
-            tera: Tera::default(),
-        })
-    }
-
-    fn manipulate(mut self) -> Result<()> {
-        for (i, (path, contents)) in self.index.iter_mut().enumerate() {
-            match path.extension().and_then(OsStr::to_str) {
-                Some("tera") => {
-                    path.set_extension("html");
-                    let filename = path.file_name().unwrap();
-                    if filename == "index.html" {
-                        path.pop();
-                        self.sections.push(i);
-                    } else {
-                        if filename.to_str().map_or(false, |p| p.starts_with('_')) {
-                            self.ignored.push(i);
-                        }
-                        path.set_extension("");
-                    }
-                    let name = path.to_string_lossy();
-                    let contents = String::from_utf8_lossy(&contents).to_string();
-                    let template = Template::new(&name, None, &contents)?;
-                    self.tera.templates.insert(name.to_string(), template);
-                    self.templates.push(i);
-                }
-                Some("md") => {
-                    path.set_extension("html");
-                    let page = Page::from(path.to_path_buf(), contents);
-                    if !page.draft {
-                        self.pages.push((i, page));
-                    }
-                }
-                Some("scss") => {
-                    path.set_extension("css");
-                    match rsass::compile_scss(&contents, Default::default()) {
-                        Ok(css) => *contents = css,
-                        Err(e) => {
-                            self.ignored.push(i);
-                            eprintln!("Warning: Failed to parse stylesheet `{}`: {}", path.display(), e)
-                        }
-                    }
-                }
-                _ => {}
-            }
-        }
-
-        self.tera.build_inheritance_chains()?;
-
-        for i in self.templates {
-            if !self.ignored.contains(&i) && !self.sections.contains(&i) {
-                let entry = &mut self.index[i];
-                entry.1 = self
-                    .tera
-                    .render(&entry.0.to_string_lossy(), &Context::new())?
-                    .into_bytes();
-                entry.0.set_extension("html");
-            }
-        }
-
-        for i in self.sections {
-            let entry = &mut self.index[i];
-            let dir = &entry.0;
-            let mut section = Section::new(dir.to_path_buf());
-            section.pages = self
-                .pages
-                .iter_mut()
-                .map(|(_, page)| page)
-                .filter(|page| page.input.parent() == Some(&dir))
-                .collect();
-            section.sort();
-            let mut context = Context::new();
-            context.insert("section", &section);
-            let contents = self.tera.render(&dir.to_string_lossy(), &context)?;
-            entry.0.push("index.html");
-            entry.1 = contents.into_bytes();
-        }
-
-        for (i, page) in self.pages {
-            let entry = &mut self.index[i];
-            if self.tera.templates.contains_key("_page") {
-                let mut context = Context::new();
-                context.insert("page", &page);
-                let content = self.tera.render("_page", &context)?;
-                let path = page.output.unwrap_or(page.input);
-                (*entry) = (path, content.into_bytes());
-            } else {
-                let path = page.output.unwrap_or(page.input);
-                (*entry) = (path, page.content.into_bytes());
-            }
-        }
-
-        for (count, index) in self.ignored.iter().enumerate() {
-            self.index.remove(index - count);
-        }
-
-        Ok(())
-    }
-}

src/page.rs

@@ -1,108 +0,0 @@
-use std::path::PathBuf;
-
-use chrono::NaiveDateTime;
-use lazy_static::lazy_static;
-use pulldown_cmark::{html, Parser};
-use regex::Regex;
-use serde::{Deserialize, Deserializer, Serializer};
-use serde_derive::{Deserialize, Serialize};
-
-#[derive(Clone, Default, Deserialize, Serialize)]
-#[serde(default)]
-pub struct Page {
-    pub permalink: String,
-    pub title: String,
-    pub author: String,
-    pub description: String,
-    pub draft: bool,
-    #[serde(deserialize_with = "parse_datetime", serialize_with = "date_to_string")]
-    pub date: Option<NaiveDateTime>,
-
-    #[serde(skip_deserializing)]
-    pub content: String,
-    #[serde(skip_deserializing)]
-    pub prev: Option<Box<Page>>,
-    #[serde(skip_deserializing)]
-    pub next: Option<Box<Page>>,
-
-    #[serde(skip)]
-    pub input: PathBuf,
-    #[serde(skip)]
-    pub output: Option<PathBuf>,
-}
-
-impl Page {
-    pub fn from(path: PathBuf, content: &[u8]) -> Page {
-        let content = String::from_utf8_lossy(&content);
-        if !FRONTMATTER_REGEX.is_match(&content) {
-            return Page {
-                content: markdown_to_html(&content),
-                input: path,
-                ..Default::default()
-            };
-        }
-
-        let captures = FRONTMATTER_REGEX.captures(&content).unwrap();
-
-        let mut page: Page = match toml::from_str(&captures[1]) {
-            Ok(page) => page,
-            Err(e) => {
-                eprintln!("failed to parse frontmatter in `{}`: {}", path.display(), e);
-                Page::default()
-            }
-        };
-
-        if page.permalink == "" {
-            page.permalink = "/".to_string() + &path.with_extension("").to_string_lossy();
-        } else {
-            page.output = Some(PathBuf::from(page.permalink.trim_start_matches('/')));
-        }
-
-        page.content = markdown_to_html(&captures[2]);
-        page.input = path;
-        page
-    }
-}
-
-lazy_static! {
-    static ref FRONTMATTER_REGEX: Regex =
-        Regex::new(r"^[[:space:]]*\-\-\-\r?\n((?s).*?(?-s))\-\-\-\r?\n?((?s).*(?-s))$").unwrap();
-}
-
-fn markdown_to_html(content: &str) -> String {
-    let mut result = String::new();
-    html::push_html(&mut result, Parser::new(content));
-    result
-}
-
-fn parse_datetime<'de, D>(deserializer: D) -> Result<Option<NaiveDateTime>, D::Error>
-where
-    D: Deserializer<'de>,
-{
-    let date = if let Ok(date) = toml::value::Datetime::deserialize(deserializer) {
-        let date = date.to_string();
-        if date.contains('T') {
-            chrono::DateTime::parse_from_rfc3339(&date)
-                .ok()
-                .map(|date| date.naive_local())
-        } else {
-            chrono::NaiveDate::parse_from_str(&date, "%Y-%m-%d")
-                .ok()
-                .map(|date| date.and_hms(0, 0, 0))
-        }
-    } else {
-        None
-    };
-    Ok(date)
-}
-
-fn date_to_string<S>(date: &Option<NaiveDateTime>, serializer: S) -> Result<S::Ok, S::Error>
-where
-    S: Serializer,
-{
-    if let Some(date) = date {
-        serializer.serialize_some(&date.format("%Y-%m-%dT%H:%M:%S").to_string())
-    } else {
-        serializer.serialize_none()
-    }
-}

src/section.rs

@@ -1,39 +0,0 @@
-use std::cmp::Ordering;
-use std::path::Path;
-
-use serde_derive::Serialize;
-
-use crate::page::Page;
-
-#[derive(Serialize)]
-pub struct Section<'a> {
-    pub pages: Vec<&'a mut Page>,
-    pub permalink: String,
-}
-
-impl<'a> Section<'a> {
-    pub fn new(path: impl AsRef<Path>) -> Section<'a> {
-        Section {
-            pages: Vec::new(),
-            permalink: match path.as_ref().to_string_lossy().as_ref() {
-                "" => "/".to_string(),
-                s => "/".to_string() + s + "/",
-            },
-        }
-    }
-
-    pub fn sort(&mut self) {
-        self.pages.sort_by(|x, y| match (x.date, y.date) {
-            (Some(x), Some(y)) => y.cmp(&x),
-            _ => Ordering::Equal,
-        });
-
-        for i in (0..self.pages.len()).rev() {
-            let prev = self.pages.get(i + 1).map(|p| Box::new((*p).clone()));
-            let next = self.pages.get(i - 1).map(|p| Box::new((*p).clone()));
-            let page = &mut self.pages[i];
-            page.prev = prev;
-            page.next = next;
-        }
-    }
-}