All initialization functions now return error codes instead of pointers.
Error codes are now properly propagated on most functions. Several new
and more specific error codes have been added in common.h
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Issue 9 on the tracker. The commit object getters for in-memory objects
were trying to parse an inexistant on-disk object when one of the commit
attributes which were still not set was queried.
We now return a NULL value when this happens.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Before changing the attributes of a commit, make sure that the internal
status is consistent with the one in the repository.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
String mememory is now managed in a much more sane manner.
Fixes include:
- git_person email and name is no longer limited to 64 characters
- git_tree_entry filename is no longer limited to 255 characters
- raw objects are properly opened & closed the minimum amount of
times required for parsing
- unit tests no longer leak
- removed 5 other misc memory leaks as reported by Valgrind
- tree writeback no longer segfaults on rare ocassions
The git_person struct is no longer public. It is now managed by the
library, and getter methods are in place to access its internal
attributes.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
All repository objects can now be created from scratch in memory using
either the git_object_new() method, or the corresponding git_XXX_new()
for each object.
So far, only git_commits can be written back to disk once created in
memory.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
All the required git_commit_set_XXX methods have been implemented; all
the attributes of a commit object can now be modified in-memory.
The new method git_object_write() automatically writes back the
in-memory changes of any object to the repository. So far it only
supports git_commit objects.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
The 'git_obj' structure is now called 'git_rawobj', since
it represents a raw object read from the ODB.
The 'git_repository_object' structure is now called 'git_object',
since it's the base object class for all objects.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
git_repository_object has now several internal methods to write back the
object information in the repository.
- git_repository__dbo_prepare_write()
Prepares the DBO object to be modified
- git_repository__dbo_write()
Writes new bytes to the DBO object
- git_repository__dbo_writeback()
Writes back the changes to the repository
Signed-off-by: Vicent Marti <tanoku@gmail.com>
The old 'git_revpool' object has been removed and
split into two distinct objects with separate
functionality, in order to have separate methods for
object management and object walking.
* A new object 'git_repository' does the high-level
management of a repository's objects (commits, trees,
tags, etc) on top of a 'git_odb'.
Eventually, it will also manage other repository
attributes (e.g. tag resolution, references, etc).
See: src/git/repository.h
* A new external method
'git_repository_lookup(repo, oid, type)'
has been added to the 'git_repository' API.
All object lookups (git_XXX_lookup()) are now
wrappers to this method, and duplicated code
has been removed. The method does automatic type
checking and returns a generic 'git_revpool_object'
that can be cast to any specific object.
See: src/git/repository.h
* The external methods for object parsing of repository
objects (git_XXX_parse()) have been removed.
Loading objects from the repository is now managed
through the 'lookup' functions. These objects are
loaded with minimal information, and the relevant
parsing is done automatically when the user requests
any of the parsed attributes through accessor methods.
An attribute has been added to 'git_repository' in
order to force the parsing of all the repository objects
immediately after lookup.
See: src/git/commit.h
See: src/git/tag.h
See: src/git/tree.h
* The previous walking functionality of the revpool
is now found in 'git_revwalk', which does the actual
revision walking on a repository; the attributes
when walking through commits in a database have been
decoupled from the actual commit objects.
This increases performance when accessing commits
during the walk and allows to have several
'git_revwalk' instances working at the same time on
top of the same repository, without having to load
commits in memory several times.
See: src/git/revwalk.h
* The old 'git_revpool_table' has been renamed to
'git_hashtable' and now works as a generic hashtable
with support for any kind of object and custom hash
functions.
See: src/hashtable.h
* All the relevant unit tests have been updated, renamed
and grouped accordingly.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
The 'parse_oid' and 'parse_person' methods which were used by the commit
parser are now global so they can be used when parsing other objects.
The 'git_commit_person' struct has been changed to a generic
'git_person'.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
The basic information (pointed trees and blobs) of each tree object in a
revision pool can now be parsed and queried.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
The following new external methods have been added:
GIT_EXTERN(const char *) git_commit_message_short(git_commit *commit);
GIT_EXTERN(const char *) git_commit_message(git_commit *commit);
GIT_EXTERN(time_t) git_commit_time(git_commit *commit);
GIT_EXTERN(const git_commit_person *) git_commit_committer(git_commit *commit);
GIT_EXTERN(const git_commit_person *) git_commit_author(git_commit *commit);
GIT_EXTERN(const git_tree *) git_commit_tree(git_commit *commit);
A new structure, git_commit_person has been added to represent a
commit's author or committer.
The parsing of a commit has been split in two phases.
When adding a commit to the revision pool:
- the commit's ODB object is opened
- its raw contents are parsed for commit TIME, PARENTS and TREE
(the minimal amount of data required to traverse the pool)
- the commit's ODB object is closed
When querying for extended information on a commit:
- the commit's ODB object is reopened
- its raw contents are parsed for the requested information
- the commit's ODB object remains open to handle additional queries
New unit tests have been added for the new functionality:
In t0401-parse: parse_person_test
In t0402-details: query_details_test
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Commits now store pointers to their tree objects.
Tree objects now work as separate git_revpool_object
entities.
Tree objects can be loaded and parsed inedependently
from commits.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
git_revpool_object now has a type identifier for each object
type in a revpool (commits, trees, blobs, etc).
Trees can now be stored in the revision pool.
git_revpool_tableit now supports filtering objects by their
type when iterating through the object table.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Created commit objects in t0401-parse weren't being freed properly.
Updated the API documentation to note that commit objects are owned
by the revision pool and should not be freed manually.
The parents list of each commit was being freed twice after each test.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
In order to avoid inconsistent definitions of type off_t, all
compilation units should include the "common.h" header file
before certain system headers (those which directly or indirectly
lead to the definition of off_t). The "common.h" header contains
the definition of _FILE_OFFSET_BITS to select 64-bit file offsets.
The symptom of this inconsistency, while compiling with -Wextra, is
the following warning:
In file included from src/common.h:50,
from src/commit.c:28:
src/util.h: In function git__is_sizet:
src/util.h:41: warning: comparison between signed and unsigned
In order to fix the problem, we simply remove the #include <time.h>
statement at the head of src/commit.c. Note that src/commit.h also
includes <time.h>.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Andreas Ericsson <ae@op5.se>
In order to suppress this warning, we could simply replace the
constant 0 with NULL. However, in this case, replacing the
comparison with 0 by !buffer is more idiomatic.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Andreas Ericsson <ae@op5.se>
sorting ('prev' pointers in the linked list are no longer lost).
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
'git_commit_list_toposort()' and 'git_commit_list_timesort()' now
sort a commit list by topological and time order respectively.
Both sorts are stable and in place.
'git_commit_list_append' has been replaced by 'git_commit_list_push_back'
and 'git_commit_list_push_front'.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
All the objects which will will be eventually transversable from
a revision pool (commits, trees, etc) now inherit from the
'git_revpool_object' structure which identifies them with their
own OID.
Furthermore, the 'git_revpool_table' and related functions have
been added, which allow for constant time lookup (hash table)
of the loaded revpool objects based on their OID.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
The 'gitrp_next()' method now correctly does a revision walking
of all the pushed revisions in arbritary ordering.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
git_commit_lookup() now creates commit references
without loading them from the ODB.
git_commit_parse() creates a commit reference, loads
it and parses it from the ODB.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
Basic support for iterating the revpool.
The following functions of the revwalk API have been partially
implemented:
void gitrp_reset(git_revpool *pool);
void gitrp_push(git_revpool *pool, git_commit *commit);
void gitrp_prepare_walk(git_revpool *pool);
git_commit *gitrp_next(git_revpool *pool);
Parsed commits' parents are now also parsed and stored in a
"git_commit_list" structure (linked list).
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
A few initial tests for commit parsing:
"parse_buffer_test" tests git_commit__parse_buffer() with
several malformed commit messages and a few corner cases
which should pass.
"parse_oid_test" tests git_commit__parse_oid() with several
malformed commit lines containing broken SHA1 OIDs.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
The external API function "git_commit_parse" has been renamed
to "git_commit_lookup" and has been partially implemented with
support for loading commits straight from the ODB. It still lacks
the functionality to lookup cached commits in the revpool and to
resolve tags to commits.
The following internal functions have been partially implemented:
int git_commit__parse_buffer(...);
int git_commit__parse_time(...);
int git_commit__parse_oid(...);
Commits are now fully parsed but the generated parent and tree
references are not handled yet.
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Signed-off-by: Andreas Ericsson <ae@op5.se>
We now forbid direct use of malloc, strdup or calloc within the
library and instead use wrapper functions git__malloc, etc. to
invoke the underlying library malloc and set git_errno to a no
memory error code if the allocation fails.
In the future once we have pack objects in memory we are likely
to enhance these routines with garbage collection logic to purge
cached pack data when allocations fail. Because the size of the
function will grow somewhat large, we don't want to mark them for
inline as gcc tends to aggressively inline, creating larger than
expected executables.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Using it in the first place means something's wrong.
This patch replaces it with an internal header which
carries the previously "protected" code instead.
Internal source-files simply include "commit.h" and
they're done. The internal header includes the public
one to make sure we always use the proper prototype.
Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
