This allows a format to be specified in the sccache uri, specifically
the file uri so that a per-package cache can be created. This way
an osc build locally doesn't ruin your cache moving between different
packages.
They have identical names for all downloaded packages
and get overwritten by the last downloaded file.
Unless we dowload them into subdirs or prefix them with package name,
it makes no sense to download them.
The ':' character is used as a separator in Open Build Service
and constantly appears in directory names after running osc commands.
Windows do not support ':' as a valid character on file system.
This breaks not only osc but also basic commands such
as 'git clone' on a project that contains colons in paths.
That's why we decided to make osc unsupported on Windows.
Do not fail with a traceback if the config file parsing fails.
Hence, catch the configparser.Error exception and print its
"message" attribute to the user.
Fixes: #985 ("Type error on any osc call")
Since a recent backend change, a bdep has a hdrmd5 by default. That
is, osc always downloads these bdeps from the API (unless they are
cached) instead of a mirror. This is not intended.
Using a mirror is no problem because the hdrmd5s are verified in
the build module.
Note: If this causes a problem, one could also use "osc build
--download-api-only" to mimic the old behavior.
If the oscrc is a symlink, follow the symlink when writing the
configuration file. The old code replaced the symlink with a
regular file (see #390 ("symlinked $HOME/.oscrc gets replaced
with a ordinary file")).
Implementation note: if the directory, which contains the resolved
config file, has a <config file>.new file, the file is overwritten.
When a user creates a symlink pointing from ~/.config/osc/oscrc
to a different location, don't overwrite the symlink but follow
it when writing configuration on disk.
Without escaping the % character, the download URL could be subject
to string formatting (depending on the subsequent characters). For
instance, if the url attribute's value of a buildinfo's path element
contains the substring "c_c%2B%2B", the "%2B" is interpreted as a
format string (see issue #965), which is wrong ("B" is not a valid
format character at all). In order to avoid this, escape all
% characters in the download urls.
Note: escaping the % characters in the download url itself is OK
because we only intend to "format" the path.
Note: we do not escape the % characters for urls from the config
file (implicit assumption: the user already correctly escaped the
urls (whether this assumption is sensible or not is debatable, of
course)).
Fixes: #965 ("unsupported format character 'B' (0x42) at index 66")
