[[package]]
name = "teraron"
version = "0.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
"heck 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
"failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
"itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "teraron 0.0.1",
+ "teraron 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
"walkdir 2.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
]
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"checksum tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
"checksum tera 0.11.18 (registry+https://github.com/rust-lang/crates.io-index)" = "6c87cae42cc4fc480278c7583792cc5da2d51a25be916b7921cbb45c43063b8d"
+"checksum teraron 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0d89ad4617d1dec55331067fadaa041e813479e1779616f3d3ce9308bf46184e"
"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
"checksum text_unit 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "93fc86da66d0b9aa8d359b0ec31b4342c6bc52637eadef05b91b098551a9f8e9"
"checksum textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "307686869c93e71f94da64286f9a9524c0f308a9e1c87a583de8e9c9039ad3f6"
+++ /dev/null
-//! A simple tool to generate rust code by passing a ron value
-//! to a tera template
-
-#[macro_use]
-extern crate failure;
-extern crate tera;
-extern crate ron;
-extern crate heck;
-
-use std::{
- fs,
- collections::HashMap,
- path::Path,
-};
-
-use heck::{CamelCase, ShoutySnakeCase, SnakeCase};
-
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub enum Mode {
- Overwrite,
- Verify,
-}
-
-pub use Mode::*;
-
-/// A helper to update file on disk if it has changed.
-/// With verify = false,
-pub fn update(path: &Path, contents: &str, mode: Mode) -> Result<(), failure::Error> {
- match fs::read_to_string(path) {
- Ok(ref old_contents) if old_contents == contents => {
- return Ok(());
- }
- _ => (),
- }
- if mode == Verify {
- bail!("`{}` is not up-to-date", path.display());
- }
- eprintln!("updating {}", path.display());
- fs::write(path, contents)?;
- Ok(())
-}
-
-pub fn generate(
- template: &Path,
- src: &Path,
- mode: Mode,
-) -> Result<(), failure::Error> {
- assert_eq!(
- template.extension().and_then(|it| it.to_str()), Some("tera"),
- "template file must have .rs.tera extension",
- );
- let file_name = template.file_stem().unwrap().to_str().unwrap();
- assert!(
- file_name.ends_with(".rs"),
- "template file must have .rs.tera extension",
- );
- let tgt = template.with_file_name(file_name);
- let template = fs::read_to_string(template)?;
- let src: ron::Value = {
- let text = fs::read_to_string(src)?;
- ron::de::from_str(&text)?
- };
- let content = render(&template, src)?;
- update(
- &tgt,
- &content,
- mode,
- )
-}
-
-pub fn render(
- template: &str,
- src: ron::Value,
-) -> Result<String, failure::Error> {
- let mut tera = mk_tera();
- tera.add_raw_template("_src", template)
- .map_err(|e| format_err!("template parsing error: {:?}", e))?;
- let res = tera.render("_src", &src)
- .map_err(|e| format_err!("template rendering error: {:?}", e))?;
- return Ok(res);
-}
-
-fn mk_tera() -> tera::Tera {
- let mut res = tera::Tera::default();
- res.register_filter("camel", |arg, _| {
- Ok(arg.as_str().unwrap().to_camel_case().into())
- });
- res.register_filter("snake", |arg, _| {
- Ok(arg.as_str().unwrap().to_snake_case().into())
- });
- res.register_filter("SCREAM", |arg, _| {
- Ok(arg.as_str().unwrap().to_shouty_snake_case().into())
- });
- res.register_function("concat", Box::new(concat));
- res
-}
-
-fn concat(args: HashMap<String, tera::Value>) -> tera::Result<tera::Value> {
- let mut elements = Vec::new();
- for &key in ["a", "b", "c"].iter() {
- let val = match args.get(key) {
- Some(val) => val,
- None => continue,
- };
- let val = val.as_array().unwrap();
- elements.extend(val.iter().cloned());
- }
- Ok(tera::Value::Array(elements))
-}