When a file is given using --sourceparams then wic directly use that file
instead of copying them to build folder. At time of assembling it os.rename
is called which renames all the files to name. In that process the original
file is renamed. When image recipe is rebuilt then wic complains about
missing file which was renamed in previous build.

[YOCTO #8854]

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

(From OE-Core master rev: 33c52b1f2d39feb641465bf42e8b16d0ab22a316)

Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>

Made short variable names longer and more readable.

Fixed pylint warnings "Invalid variable name" and
"Invalid argument name".

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Renamed variables named as Python builtin functions.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Removed or reworked code with unused variables.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

cmdln.py https://pypi.python.org/pypi/cmdln was used in
creator.py to parse image plugin options and arguments.

There is no need in such a sofisticated API to do this
simple task. Standard option parser optparse.OptionParser
can do it just fine.

Modified Creator class to work with option parser.
Removed cmdln.py from the wic codebase.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

This plugin creates a hybrid, legacy and EFI bootable ISO image.
The generated image can be used on optical media as well as
USB media.

Legacy boot uses syslinux and EFI boot uses grub or gummiboot (not
implemented yet) as bootloader. The plugin creates the directories
required by bootloaders and populates them by creating and
configuring the bootloader files.

The plugin adds an image file to the iso which
contains the directory tree of the rootfs folder specified by the
--rootfs argument or by the IMAGE_ROOTFS bitbake variable.

Using the isohybryd tool, the created .iso image is enhanced by a MBR
for booting from disk storage devices, consequently the provided
iso image could be copyed directly by dd comand onto USB drive or
could be burned to an optical media by using a suitable image burner.

The plugin depends on parted, e2fstools, syslinux, grub, cdrtools,
dosfstools and mtools program.

Some of the functions in this plugin were inspired from bootimg-efi.py
and bootimg-pcbios.py plugins implemented by Tom Zanussi.

Signed-off-by: Mihaly Varga <mihaly.varga@ni.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

Fixed pylint warning unused-import

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>

Fixed pylint warnings bad-continuation, bad-continuation and
line-too-long.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>

Wic gets bitbake variables by parsing output of 'bitbake -e' command.

This implementation improves this procedure as it runs 'bitbake -e' only
when API is called and does it only once, i.e. in a "lazy" way. As parsing
results are cached 'bitbake -e' is run only once and results are parsed
only once per requested set of variables.

get_bitbake_var became the only API call. It replaces find_artifacts,
find_artifact, find_bitbake_env_lines, get_bitbake_env_lines,
set_bitbake_env_lines and get_line_val calls making API much more clear.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>

Added 'compressor' argument to Direct plugin API to
pass a name of compressor utility.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>