#include "git2cpp/revwalker.h"

#include "git2cpp/error.h"

#include "git2cpp/repo.h"

#include <git2/revwalk.h>

namespace git

{

namespace revwalker

{

namespace sorting

{

const type none(GIT_SORT_NONE);

const type topological(GIT_SORT_TOPOLOGICAL);

const type time(GIT_SORT_TIME);

const type reverse(GIT_SORT_REVERSE);

}

}

void RevWalker::Destroy::operator()(git_revwalk* walker) const

{

git_revwalk_free(walker);

}

void RevWalker::sort(revwalker::sorting::type s)

{

git_revwalk_sorting(walker_.get(), s.value());

}

void RevWalker::simplify_first_parent()

{

git_revwalk_simplify_first_parent(walker_.get());

}

void RevWalker::push_head() const

{

if (git_revwalk_push_head(walker_.get()))

throw invalid_head_error();

}

void RevWalker::hide(git_oid const & obj) const

{

if (git_revwalk_hide(walker_.get(), &obj))

throw non_commit_object_error(obj);

}

void RevWalker::push(git_oid const & obj) const

{

if (git_revwalk_push(walker_.get(), &obj))

throw non_commit_object_error(obj);

}

Commit RevWalker::next() const

{

git_oid oid;

if (git_revwalk_next(&oid, walker_.get()) == 0)

return repo_->commit_lookup(oid);

else

return Commit();

}

bool RevWalker::next(char * id_buffer) const

{

git_oid oid;

bool valid = (git_revwalk_next(&oid, walker_.get()) == 0);

if (valid)

git_oid_fmt(id_buffer, &oid);

return valid;

}

}