Hack book de
Unfortunately, the documentation of this library has not
been written yet. However, the
README.md file may contain
enough information to help you. This document is an extract of the
Sorry for this inconvenience. Be ensured we are working hard to fix this.
This library provides the
hoa:// protocol, which is a way to abstract resource
We propose a quick overview of how to list the current tree of the protocol, how
to resolve a
hoa:// path and finally how to add a new node in this tree.
First of all, to get the instance of the
hoa:// protocol, you should use the
getInstance method on the
Hoa\Protocol\Protocol class which
represents the root of the protocol tree:
echo Hoa\Protocol\Protocol::getInstance(); /** * Might output: * Application * Public * Data * Etc * Configuration * Locale * Lost+found * Temporary * Variable * Cache * Database * Log * Private * Run * Test * Library */
We see that there is 3 “sub-roots”:
Application, representing resources of the application, like public files (in the
Publicnode), models, resources… everything related to the application,
Data, representing data required by the application, like configuration files, locales, databases, tests etc.
Library, representing all Hoa's libraries.
hoa://Library/Protocol/README.md represents the abstract path to this
real file. No matter where you are on the disk, this path will always be valid
and pointing to this file. This becomes useful in an application where you would
like to access to a configuration file like this
hoa://Data/Etc/Configuration/Foo.php: Maybe the
Data directory does not
exist, maybe the
Configuration directories do not exist neither, but
each node of the
hoa:// tree resolves to a valid directory which contains your
Foo.php configuration file. This is an abstract path for a resource.
Resolving a path
We can either resolve a path by using the global
resolve function or the
var_dump( resolve('hoa://Library/Protocol/README.md') ); /** * Might output: * string(37) "/usr/local/lib/Hoa/Protocol/README.md" */
Register new nodes in the tree
hoa:// protocol is a tree. Thus, to add a new “component”/“directory” in
this tree, we must create a node and register it as a child of an existing node.
Thus, in the following example we will create a
Usb node, pointing to the
/Volumes directory, and we will add it as a new sub-root, so an immediate
child of the root:
$protocol = Hoa\Protocol\Protocol::getInstance(); $protocol = new Hoa\Protocol\Node('Usb', '/Volumes/');
Here we are. Now, resolving
hoa://Usb/StickA might point to
var_dump( resolve('hoa://Usb/StickA') ); /** * Might output: * string(15) "/Volumes/StickA" */
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