Add a test to check that value replacement works.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Confg variables are indended using tags and not four spaces as was
being done by the code.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

After each variable gets set, we store it in our list (not completely
in the right position, but the close enough). Then we write out the
new config file in the same way that git.git does it (keep the rest of
the file intact and insert or replace the variable in its line).

Overwriting variables and adding new ones is supported (even on new
sections), though deleting isn't yet.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

The section name should be stored in its case-sensitive variant when
we are adding a new variable. Use the internalize_section function to
do just that.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

The (rather late) early-exit code, which provides a negligible
optimisation causes cvar_match_section to return false negatives when
it's called with a section name instead of a full variable name.

Remove this optimisation.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

This time for good.

This commit uploaded an old broken test. Oops!

Tree: Added a function that returns the type of a tree entry.

Search objects of different types given OID prefix

Better name for git_oid_match

Fix build errors on MSVC

[Tree | Index] API uniformisation

reference_rename: respect all references v2

Cleanup the thread-utils file. Do not define TLS if libgit2 is not
threadsafe.

[Discovery path] Fix and tests

As suggested by carlosmn, git_oid_ncmp would probably
be a better name than git_oid_match, for it does the same
as git_oid_cmp but only up to a certain amount of hex digits.

given an OID prefix.

Repository: A little fix in error code. GIT_ENOTFOUND is returned when a gitfile is malformed and GIT_ENOTAREPO when the pointed dir is not a repo.
Fixed tests so that it check the right error code.

The filebuf was not being properly written after a flush. This should
cut it now.

Fixes #228

Feature Added: Search an unmerged entry by path (git_index_get_unmerged
renamed to git_index_get_unmerged_bypath) or by index (git_index_get_unmerged_byindex).

the error returned by the subsystem; clarify error message.

Fix tiny typo.

Signed-off-by: schu <schu-github@schulog.org>

Add a new function reference_available() to check if a reference name
actually is free and can be used.

Signed-off-by: schu <schu-github@schulog.org>

Signed-off-by: schu <schu-github@schulog.org>

Unfortunately, the across_fs flag can't be tested automaticly, as we can't
create a temporary new filesystem.

It used to discard the last directory if the path didn't have a trailing slash.

Now the ceiling_dirs are compared with their symbolic free version (like base_path).
The ceiling dirs check is now performed after getting the parent directory.

Discovery path v2

Repository: Added the git_repository_discover function that finds by itself the git directory that manage a given directory path.

Repository: Splitted the repository destructor into a helper part (only free directories path) and the complete public destructor.

Repository: Added read_gitfile that allows you to read a .git file and extract the git directory path.

retrieve_device returns the file device for a given path (so that we can detect device change while walking through parent directories).
abspath returns a canonicalized path, symbolic link free.
retrieive_ceiling_directories_offset returns the biggest path offset that path match in the ceiling directory list (so that we can stop at ceiling directories).