feat: add libgit2 and libssh2 static libs, headers, and build support

bin/buildlibs.sh

@@ -338,6 +338,69 @@ function remove_src {
   fi
 }
 
+function ensure_libssh2 {
+    if ! copy_from_package libssh2.a ; then
+        ensure_musl
+        ensure_openssl
+        get_src libssh2 https://github.com/libssh2/libssh2.git
+        colorln CYAN "Building libssh2"
+        mkdir -p build
+        cd build
+        cmake .. \
+            -DBUILD_SHARED_LIBS=OFF \
+            -DBUILD_TESTING=OFF \
+            -DCRYPTO_BACKEND=OpenSSL \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DOPENSSL_SSL_LIBRARY=${MY_LIBS}/libssl.a \
+            -DOPENSSL_CRYPTO_LIBRARY=${MY_LIBS}/libcrypto.a
+        make -j4
+        cp src/libssh2.a ${MY_LIBS}
+        # Copy the public header so libgit2 cmake can find it.
+        INCLUDE_OUT=${DEPS_DIR}/include
+        mkdir -p ${INCLUDE_OUT}
+        cp ../include/libssh2.h ${INCLUDE_OUT}/
+        if [[ -f ${MY_LIBS}/libssh2.a ]] ; then
+            echo $(color GREEN Installed libssh2 to:) ${MY_LIBS}/libssh2.a
+        else
+            colorln RED "Installation of libssh2 failed!"
+            exit 1
+        fi
+    fi
+}
+
+function ensure_libgit2 {
+    if ! copy_from_package libgit2.a ; then
+        ensure_musl
+        ensure_zlib
+        ensure_openssl
+        ensure_libssh2
+        get_src libgit2 https://github.com/libgit2/libgit2.git
+        colorln CYAN "Building libgit2"
+        mkdir -p build
+        cd build
+        cmake .. \
+            -DBUILD_SHARED_LIBS=OFF \
+            -DBUILD_TESTS=OFF \
+            -DUSE_SSH=libssh2 \
+            -DUSE_HTTPS=OpenSSL \
+            -DUSE_NTLMCLIENT=OFF \
+            -DREGEX_BACKEND=builtin \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DOPENSSL_SSL_LIBRARY=${MY_LIBS}/libssl.a \
+            -DOPENSSL_CRYPTO_LIBRARY=${MY_LIBS}/libcrypto.a \
+            -DLIBSSH2_INCLUDE_DIR=${DEPS_DIR}/include \
+            -DLIBSSH2_LIBRARY=${MY_LIBS}/libssh2.a
+        make -j4
+        cp libgit2.a ${MY_LIBS}
+        if [[ -f ${MY_LIBS}/libgit2.a ]] ; then
+            echo $(color GREEN Installed libgit2 to:) ${MY_LIBS}/libgit2.a
+        else
+            colorln RED "Installation of libgit2 failed!"
+            exit 1
+        fi
+    fi
+}
+
 ensure_musl
 ensure_kernel_headers
 ensure_openssl
@@ -347,6 +410,8 @@ ensure_hatrack
 ensure_ffi
 ensure_sodium
 ensure_zlib
+ensure_libssh2
+ensure_libgit2
 
 colorln GREEN All dependencies satisfied.
 remove_src

nimutils/c/git2.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#ifndef INCLUDE_git_git_h__
+#define INCLUDE_git_git_h__
+
+#include "git2/annotated_commit.h"
+#include "git2/apply.h"
+#include "git2/attr.h"
+#include "git2/blob.h"
+#include "git2/blame.h"
+#include "git2/branch.h"
+#include "git2/buffer.h"
+#include "git2/cert.h"
+#include "git2/checkout.h"
+#include "git2/cherrypick.h"
+#include "git2/clone.h"
+#include "git2/commit.h"
+#include "git2/common.h"
+#include "git2/config.h"
+#include "git2/credential.h"
+#include "git2/deprecated.h"
+#include "git2/describe.h"
+#include "git2/diff.h"
+#include "git2/email.h"
+#include "git2/errors.h"
+#include "git2/experimental.h"
+#include "git2/filter.h"
+#include "git2/global.h"
+#include "git2/graph.h"
+#include "git2/ignore.h"
+#include "git2/index.h"
+#include "git2/indexer.h"
+#include "git2/mailmap.h"
+#include "git2/merge.h"
+#include "git2/message.h"
+#include "git2/net.h"
+#include "git2/notes.h"
+#include "git2/object.h"
+#include "git2/odb.h"
+#include "git2/odb_backend.h"
+#include "git2/oid.h"
+#include "git2/pack.h"
+#include "git2/patch.h"
+#include "git2/pathspec.h"
+#include "git2/proxy.h"
+#include "git2/rebase.h"
+#include "git2/refdb.h"
+#include "git2/reflog.h"
+#include "git2/refs.h"
+#include "git2/refspec.h"
+#include "git2/remote.h"
+#include "git2/repository.h"
+#include "git2/reset.h"
+#include "git2/revert.h"
+#include "git2/revparse.h"
+#include "git2/revwalk.h"
+#include "git2/signature.h"
+#include "git2/stash.h"
+#include "git2/status.h"
+#include "git2/submodule.h"
+#include "git2/tag.h"
+#include "git2/transport.h"
+#include "git2/transaction.h"
+#include "git2/tree.h"
+#include "git2/types.h"
+#include "git2/version.h"
+#include "git2/worktree.h"
+
+#endif

nimutils/c/git2/annotated_commit.h

@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_annotated_commit_h__
+#define INCLUDE_git_annotated_commit_h__
+
+#include "common.h"
+#include "repository.h"
+#include "types.h"
+
+/**
+ * @file git2/annotated_commit.h
+ * @brief A commit and information about how it was looked up by the user.
+ * @defgroup git_annotated_commit Git annotated commit routines
+ * @ingroup Git
+ *
+ * An "annotated commit" is a commit that contains information about
+ * how the commit was resolved, which can be used for maintaining the
+ * user's "intent" through commands like merge and rebase. For example,
+ * if a user wants to "merge HEAD" then an annotated commit is used to
+ * both contain the HEAD commit _and_ the fact that it was resolved as
+ * the HEAD ref.
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Creates a `git_annotated_commit` from the given reference.
+ * The resulting git_annotated_commit must be freed with
+ * `git_annotated_commit_free`.
+ *
+ * @param[out] out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given reference
+ * @param ref reference to use to lookup the git_annotated_commit
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_from_ref(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const git_reference *ref);
+
+/**
+ * Creates a `git_annotated_commit` from the given fetch head data.
+ * The resulting git_annotated_commit must be freed with
+ * `git_annotated_commit_free`.
+ *
+ * @param[out] out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given commit
+ * @param branch_name name of the (remote) branch
+ * @param remote_url url of the remote
+ * @param id the commit object id of the remote branch
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_from_fetchhead(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const char *branch_name,
+	const char *remote_url,
+	const git_oid *id);
+
+/**
+ * Creates a `git_annotated_commit` from the given commit id.
+ * The resulting git_annotated_commit must be freed with
+ * `git_annotated_commit_free`.
+ *
+ * An annotated commit contains information about how it was
+ * looked up, which may be useful for functions like merge or
+ * rebase to provide context to the operation.  For example,
+ * conflict files will include the name of the source or target
+ * branches being merged.  It is therefore preferable to use the
+ * most specific function (eg `git_annotated_commit_from_ref`)
+ * instead of this one when that data is known.
+ *
+ * @param[out] out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given commit
+ * @param id the commit object id to lookup
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_lookup(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const git_oid *id);
+
+/**
+ * Creates a `git_annotated_commit` from a revision string.
+ *
+ * See `man gitrevisions`, or
+ * http://git-scm.com/docs/git-rev-parse.html#_specifying_revisions for
+ * information on the syntax accepted.
+ *
+ * @param[out] out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given commit
+ * @param revspec the extended sha syntax string to use to lookup the commit
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_from_revspec(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const char *revspec);
+
+/**
+ * Gets the commit ID that the given `git_annotated_commit` refers to.
+ *
+ * @param commit the given annotated commit
+ * @return commit id
+ */
+GIT_EXTERN(const git_oid *) git_annotated_commit_id(
+	const git_annotated_commit *commit);
+
+/**
+ * Get the refname that the given `git_annotated_commit` refers to.
+ *
+ * @param commit the given annotated commit
+ * @return ref name.
+ */
+GIT_EXTERN(const char *) git_annotated_commit_ref(
+	const git_annotated_commit *commit);
+
+/**
+ * Frees a `git_annotated_commit`.
+ *
+ * @param commit annotated commit to free
+ */
+GIT_EXTERN(void) git_annotated_commit_free(
+	git_annotated_commit *commit);
+
+/** @} */
+GIT_END_DECL
+#endif