guidon is a french word for handlebars.
guidon is a small library which aims to speed up project initialization with templates.
guidon has a command line interface guic
toml
[dependencies]
guidon = "0.2"
guidon performs templating based on handlebars templating system.
Files to be handles needs to have an .hbs extension. Folders and files names can be templatized too : {{folder/subfolder}}
The entry point is the Guidon structure.
```rust, no_run use guidon::Guidon; use std::collections::HashMap; use std::path::PathBuf;
let mut guidon = Guidon::new(PathBuf::from("path/to/template/dir"));
let mut vars = HashMap::new();
vars.insert("key1".tostring(), "value1".tostring());
guidon.variables(vars);
guidon.apply_template("path/to/destination").unwrap();
``
With this initialization:
* guidon will use the vars map to find substitution values.
* guidon will parse the directorypath/to/template/dir/template
* the result will be written inpath/to/destination`
guidon implements a TryNew trait to initialize from a dir or a git repo
```rust, no_run use guidon::{Guidon, TryNew};
let mut guidon = Guidon::try_new("path/to/template/dir").unwrap();
``
With this initialization:
* guidon will init the substitution variables frompath/to/template/dir/variables.toml
* guidon will parse the directorypath/to/template/dir/template`
```rust, no_run use guidon::{Guidon, TryNew};
let mut guidon = Guidon::trynew("path/to/template/dir/myvars.toml").unwrap();
guidon.usetemplatedir(false);
``
With this initialization:
* guidon will init the substitution variables frompath/to/template/dir/my_vars.toml
* guidon will parse the directorypath/to/template/dir`
```rust, no_run use guidon::{{Guidon, TryNew, GitOptions}};
let git = GitOptions::builder()
.repo("url/to/repo")
.build()
.unwrap();
let mut guidon = Guidon::try_new(git);
``
With this initialization
* guidon will clone the repo to a temporary directory
* guidon will init the substitutions variables fromtmp/dir/template.toml
* when applying template, guidon will parse the directorytmp/dir/template`
The git repo url could be in the form :
* http[s]://[user[:password]]@uri/repo[.git] where user and password must be part of the url
* git@uri:repo.git : the key used must be loaded in an ssh-agent instance
The configuration file is structured as follows : ```toml
[variables] test1 = "test 1" test2 = "test 2" ```
The git initialization is a feature that can be deactivated.
In Cargo.toml
toml
[dependencies.guidon]
version = "0.2"
default-features = false
guidon offers the possiblity to provide two callbacks : * a variables callback to operate on the variables before applying the template * a render callback, which is called if a missing value is detected while rendering the template.
These callbacks could be use for user interaction, or default behaviour.
In this example, the callback will add " cb" to every value.
rust, no_run
use guidon::Guidon;
use std::collections::HashMap;
use std::path::PathBuf;
let cb = |h: &mut HashMap<String, String>| {
h.iter_mut().for_each(|(_, v)| *v +=" cb");
};
let mut guidon = Guidon::new(PathBuf::from("template/path"));
guidon.set_variables_callback(cb);
In this example, the callback will replace any missing value by the key concatenated with "-cb"
```rust, no_run
use guidon::Guidon;
use std::collections::HashMap;
use std::path::PathBuf;
// this callback will add -cb to the key as a value
let cb = |h: String| {
let mut s = h.clone();
s.pushstr("-cb");
s
};
let mut guidon = Guidon::new(PathBuf::from("template/path"));
guidon.setrender_callback(cb);
```
Templatized files must have the .hbs extension. When rendered, this extension will be
deleted (eg. a MyHelloWord.java.hbs file will be rendered as a MyHelloWorld.java file).
Templatized values are declared with "mustaches" : {{myKey}}.
Values for these keys can be provided by :
* a HashMapGuidon::variables
* a template.toml file
Some helpers are provided :
* replace. It's simply replace a string by another in the value.
Tell me: {{ replace my_var everybody world }} with my_var="Hello everybody ! will render as
Tell me: Hello world !.
* append. Simply append a string to the value.
Tell me: {{ append my_var "and everybody !" }} with my_var="Hello world" will render as
Tell me: Hello world and everybody !.
* prepend. Prepend a string to the value.
Tell me: {{ prepend my_var "Sure, " }} with my_var="hello world" will render as Tell me: Sure, hello world.
* up. Uppercase the value
* low. Lowercase the value
Filnames and directory can also be templatized.
Super-{{my_var}}-content.txt will render as Super-boring-content.txt given my_var="boring".
If the content of the file is templatized, we have Super-{{my_var}}-content.txt.hbs.
The template.toml structure is the following:
toml
[variables]
my_var="my value"
my_other_var="oh my, I need to find an idea…"
guidon uses the log facade.
The minimum rust version is 1.38.0
This project is licensed under either of
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in guidon by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.