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Guidelines on Code Modification
===============================

Coding Style
------------

* Use syntax compatible to both python 2.6 and 3.1.
* Use docstrings with pydoc in mind
* Follow the style guide for python code:
    http://www.python.org/dev/peps/pep-0008/
* Although this guide suggests otherwise, tabs are used for indentation
    of code and docstrings.  In other documents (readme, etc), use spaces.


Patches
-------

Send patches, created with "git format-patch", to the email adress

    romanz@lavabit.com

If you plan to do major changes, or many changes over time, I encourage
you to create a fork on GitHub, Gitorious or any other site.


Common Changes
--------------

* Change which files are previewed in the auto preview:
In ranger/gui/widget/browsercolumn.py
the constant PREVIEW_BLACKLIST

* Adding options:
In ranger/defaults/options.py
add the default value, like: my_option = True
In ranger/shared/settings.py
add the name of your option to the constant ALLOWED_SETTINGS

The setting is now accessible at self.settings.my_option,
assuming <self> is a "SettingsAware" object.

* Change commands:
ranger/defaults/commands.py

* Create aliases for commands:
In ranger/defaults/commands.py
at the bottom, write something like: alias(exit=quit)

* Adding colorschemes:
Copy ranger/colorschemes/default.py to ranger/colorschemes/myscheme.py
and modify it according to your needs.  Alternatively, mimic the jungle
colorscheme.  It subclasses the default scheme and just modifies a few things.
In ranger/defaults/options.py (or ~/.ranger/options.py), change
    colorscheme = colorschemes.default
to: colorscheme = colorschemes.myscheme

* Change which files are considered to be "hidden":
In ranger/defaults/options.py
change the hidden_filter regular expression.

* Change the key map:
Modify ranger/defaults/keys.py.  This should be self-explanatory.
Check out ranger/core/actions.py for the most common actions, of course
you can also use your own functions.

* Change the file type => application associations:
In ranger/defaults/apps.py
modify the method app_default.
The variable "f" is a filesystem-object with attributes like mimetype,
extension, etc.  For a full list, check ranger/fsobject/fsobject.py

* Change the file extension => mime type associations:
Modify ranger/data/mime.types
and run ranger/data/generate.py to compile it.


Version Numbering
-----------------

X.Y.Z, where:

* X: Milestones
* Y: Stable versions
* Z: Experimental versions
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#!/bin/sh

# First we define the function
ConfirmOrExit ()
{
    while true
    do
        echo -n "Please confirm (y or n) :"
        read CONFIRM
        case $CONFIRM in
            y|Y|YES|yes|Yes) break ;;
            n|N|no|NO|No)
                echo "Aborting - you entered $CONFIRM"
                exit
                ;;
            *) echo "Please enter only y or n"
        esac
    done
    echo "You entered $CONFIRM. Continuing ..."
}

DEV_NAME=${1}
IMG=${2}.qcow2
SIZE=${3}
CHROOT="/mnt"
DEV="/dev/${DEV_NAME}"

echo "/srv/qemu/img/${IMG}"
echo "${SIZE}"
echo "DEV_NAME=${DEV_NAME}"
echo "DEV=${DEV}"
echo "CHROOT=${CHROOT}"

ConfirmOrExit

#qemu-img create -f qcow2 example.qcow2 20G
qemu-img create -f qcow2 /srv/qemu/img/${IMG} ${SIZE}
qemu-nbd -c ${DEV} /srv/qemu/img/${IMG}

parted --script ${DEV} \
    mklabel gpt \
    unit mib \
    mkpart primary 2 4 \
    name 1 grub \
    mkpart ESP fat32 4 128 \
    name 2 efi \
    mkpart primary ext4 128 1128 \
    name 3 boot \
    mkpart primary ext4 1128 12128 \
    name 4 root \
    mkpart primary ext4 12128 14128 \
    name 5 var \
    mkpart primary ext4 14128 100% \
    name 6 lvm \
    set 1 bios_grub on \
    set 2 boot on \
    set 6 lvm on

kpartx -a -s -l -u ${DEV}

mkfs.fat -F 32  /dev/mapper/${DEV_NAME}p2
mkfs.ext4       /dev/mapper/${DEV_NAME}p3
mkfs.ext4       /dev/mapper/${DEV_NAME}p4
mkfs.ext4       /dev/mapper/${DEV_NAME}p5
pvcreate	/dev/mapper/${DEV_NAME}p6

mount /dev/mapper/${DEV_NAME}p4 $CHROOT
mkdir -p $CHROOT/proc
mkdir -p $CHROOT/sys
mkdir -p $CHROOT/dev
mkdir -p $CHROOT/media

mkdir -p $CHROOT/boot
mount /dev/mapper/${DEV_NAME}p3 $CHROOT/boot
mkdir -p $CHROOT/boot/efi
mount /dev/mapper/${DEV_NAME}p2 $CHROOT/boot/efi
mkdir -p $CHROOT/var
mount /dev/mapper/${DEV_NAME}p5 $CHROOT/var