pluie-yaml

pluie-yaml is a vala shared library managing yaml files (v 1.2) and yaml nodes in vala language.
As json is now a valid subset of yaml, you can use this lib to load json files too.

The purpose of this project is to make vala able to load and deal with yaml configuration files.
pluie-yaml use the (License MIT, many thanks to Kirill Simonov) to parse and retriew related yaml events.

License

GNU GPL v3

Prerequisites

valac meson ninja glib gee gobject pluie-echo

Install

git clone the project then cd to project directory and do :

meson --prefix=/usr ./ build
sudo ninja install -C build

Compilation

valac --pkg gee-0.8 --pkg pluie-echo-0.2 --pkg pluie-yaml-0.3 main.vala

see https://git.pluie.org/pluie/libpluie-echo in order to install pluie-echo-0.2 pkg

you can use ./build.sh to rebuild/install the pluie-yaml lib and compile samples files

Api / Documentation

https://pluie.org/pluie-yaml-0.3/index.htm
(comming soon)

Docker

a demo image will be available soon on docker hub. you will be able to run a container with :

docker run --rm -it pluie/libyaml

Usage

loader

    var path   = "./config/main.yml";
    // uncomment to enable debug
    // Pluie.Yaml.Scanner.DEBUG = true;
    var loader = new Yaml.Loader (path /* , displayFile, displayNode */);
    if ((done = loader.done)) {
        Yaml.NodeRoot root = loader.get_nodes ();
        root.display_childs ();
    }

finder

lib-yaml provide a Yaml.Finder to easily retriew a particular yaml node.
Search path definition has two mode.
The default mode is Yaml.FIND_MODE.SQUARE_BRACKETS

• node's key name must be enclosed in square brackets
• sequence entry must be enclosed in curly brace

ex : [grandfather][father][son]{2}[age]

The Other mode is Yaml.FIND_MODE.DOT

• child mapping node are separated by dot
• sequence entry must be enclosed in curly brace

ex : grandfather.father.son{2}.age

with singlepair node, you can retriew corresponding scalar node with {0}

/*
# ex yaml file :
product:
    - sku         : BL394D
      quantity    : 4
      description : Basketball
*/
    ...
    Yaml.NodeRoot root = loader.get_nodes ();
    Yaml.Node?    node = null;
    if ((node = finder.find("product{0}.description{0}")) != null) {
        var val = node.data;
    }

more samples

see samples files in ./samples directory

todo

• dumper
• fix nodes traversing