diff options
56 files changed, 1415 insertions, 45 deletions
diff --git a/include/git2/common.h b/include/git2/common.h index f968deb23..b09b078a1 100644 --- a/include/git2/common.h +++ b/include/git2/common.h @@ -224,7 +224,8 @@ typedef enum { GIT_OPT_GET_OWNER_VALIDATION, GIT_OPT_SET_OWNER_VALIDATION, GIT_OPT_GET_HOMEDIR, - GIT_OPT_SET_HOMEDIR + GIT_OPT_SET_HOMEDIR, + GIT_OPT_ENABLE_SHALLOW } git_libgit2_opt_t; /** @@ -461,6 +462,9 @@ typedef enum { * > { "!noop", "newext" } indicates that the caller does not want * > to support repositories with the `noop` extension but does want * > to support repositories with the `newext` extension. + * + * opts(GIT_OPT_ENABLE_SHALLOW, int enabled) + * > Enable or disable shallow clone support completely. * * opts(GIT_OPT_GET_OWNER_VALIDATION, int *enabled) * > Gets the owner validation setting for repository diff --git a/include/git2/errors.h b/include/git2/errors.h index a61964bbb..e634a97c1 100644 --- a/include/git2/errors.h +++ b/include/git2/errors.h @@ -109,7 +109,8 @@ typedef enum { GIT_ERROR_WORKTREE, GIT_ERROR_SHA, GIT_ERROR_HTTP, - GIT_ERROR_INTERNAL + GIT_ERROR_INTERNAL, + GIT_ERROR_GRAFTS } git_error_t; /** diff --git a/include/git2/remote.h b/include/git2/remote.h index 8c9c26f3f..9e4043f87 100644 --- a/include/git2/remote.h +++ b/include/git2/remote.h @@ -744,6 +744,20 @@ typedef struct { git_proxy_options proxy_opts; /** + * Depth of the fetch to perform. Depth <= 0 fetches the full history. + * + * The default is -1. + */ + int depth; + + /** + * Convert a shallow repository to a full repository. + * + * The default is 0, which means the flag is off. + */ + int unshallow; + + /** * Whether to allow off-site redirects. If this is not * specified, the `http.followRedirects` configuration setting * will be consulted. @@ -758,7 +772,7 @@ typedef struct { #define GIT_FETCH_OPTIONS_VERSION 1 #define GIT_FETCH_OPTIONS_INIT { GIT_FETCH_OPTIONS_VERSION, GIT_REMOTE_CALLBACKS_INIT, GIT_FETCH_PRUNE_UNSPECIFIED, 1, \ - GIT_REMOTE_DOWNLOAD_TAGS_UNSPECIFIED, GIT_PROXY_OPTIONS_INIT } + GIT_REMOTE_DOWNLOAD_TAGS_UNSPECIFIED, GIT_PROXY_OPTIONS_INIT, -1, 0 } /** * Initialize git_fetch_options structure diff --git a/include/git2/sys/transport.h b/include/git2/sys/transport.h index b70582188..062bcd0ed 100644 --- a/include/git2/sys/transport.h +++ b/include/git2/sys/transport.h @@ -25,6 +25,15 @@ GIT_BEGIN_DECL +typedef struct git_shallowarray git_shallowarray; + +typedef struct { + const git_remote_head * const *refs; + size_t count; + git_shallowarray *shallow_roots; + int depth; +} git_fetch_negotiation; + struct git_transport { unsigned int version; /**< The struct version */ @@ -96,8 +105,7 @@ struct git_transport { int GIT_CALLBACK(negotiate_fetch)( git_transport *transport, git_repository *repo, - const git_remote_head * const *refs, - size_t count); + const git_fetch_negotiation *fetch_data); /** * Start downloading the packfile from the remote repository. @@ -442,6 +450,11 @@ GIT_EXTERN(int) git_smart_subtransport_ssh( git_transport *owner, void *param); +GIT_EXTERN(size_t) git_shallowarray_count(git_shallowarray *array); +GIT_EXTERN(const git_oid *) git_shallowarray_get(git_shallowarray *array, size_t idx); +GIT_EXTERN(int) git_shallowarray_add(git_shallowarray *array, git_oid *oid); +GIT_EXTERN(int) git_shallowarray_remove(git_shallowarray *array, git_oid *oid); + /** @} */ GIT_END_DECL #endif diff --git a/src/libgit2/clone.c b/src/libgit2/clone.c index b73880e44..43341a493 100644 --- a/src/libgit2/clone.c +++ b/src/libgit2/clone.c @@ -420,7 +420,9 @@ static int clone_into( memcpy(&fetch_opts, opts, sizeof(git_fetch_options)); fetch_opts.update_fetchhead = 0; - fetch_opts.download_tags = GIT_REMOTE_DOWNLOAD_TAGS_ALL; + + if (opts->depth <= 0) + fetch_opts.download_tags = GIT_REMOTE_DOWNLOAD_TAGS_ALL; if ((error = git_remote_connect_options__from_fetch_opts(&connect_opts, remote, &fetch_opts)) < 0) goto cleanup; diff --git a/src/libgit2/commit.c b/src/libgit2/commit.c index d85fefb3d..a7d831115 100644 --- a/src/libgit2/commit.c +++ b/src/libgit2/commit.c @@ -22,6 +22,7 @@ #include "object.h" #include "array.h" #include "oidarray.h" +#include "grafts.h" void git_commit__free(void *_commit) { @@ -427,10 +428,6 @@ static int commit_parse( buffer += tree_len; } - /* - * TODO: commit grafts! - */ - while (git_object__parse_oid_header(&parent_id, &buffer, buffer_end, "parent ", opts->oid_type) == 0) { @@ -532,16 +529,44 @@ int git_commit__parse_raw( return commit_parse(commit, data, size, &parse_options); } +static int assign_commit_parents_from_graft(git_commit *commit, git_commit_graft *graft) { + size_t idx; + git_oid *oid; + + git_array_clear(commit->parent_ids); + git_array_init_to_size(commit->parent_ids, git_array_size(graft->parents)); + git_array_foreach(graft->parents, idx, oid) { + git_oid *id = git_array_alloc(commit->parent_ids); + GIT_ERROR_CHECK_ALLOC(id); + + git_oid_cpy(id, oid); + } + + return 0; +} + int git_commit__parse_ext( git_commit *commit, git_odb_object *odb_obj, git_commit__parse_options *parse_opts) { - return commit_parse( - commit, - git_odb_object_data(odb_obj), - git_odb_object_size(odb_obj), - parse_opts); + git_repository *repo = git_object_owner((git_object *)commit); + git_commit_graft *graft; + int error; + + if ((error = commit_parse(commit, git_odb_object_data(odb_obj), + git_odb_object_size(odb_obj), parse_opts)) < 0) + return error; + + if (!git_shallow__enabled) + return 0; + + /* Perform necessary grafts */ + if (git_grafts_get(&graft, repo->grafts, git_odb_object_id(odb_obj)) != 0 && + git_grafts_get(&graft, repo->shallow_grafts, git_odb_object_id(odb_obj)) != 0) + return 0; + + return assign_commit_parents_from_graft(commit, graft); } #define GIT_COMMIT_GETTER(_rvalue, _name, _return, _invalid) \ diff --git a/src/libgit2/fetch.c b/src/libgit2/fetch.c index ff10bde02..d66892ca0 100644 --- a/src/libgit2/fetch.c +++ b/src/libgit2/fetch.c @@ -20,6 +20,7 @@ #include "netops.h" #include "repository.h" #include "refs.h" +#include "transports/smart.h" static int maybe_want(git_remote *remote, git_remote_head *head, git_refspec *tagspec, git_remote_autotag_option_t tagopt) { @@ -59,8 +60,10 @@ static int mark_local(git_remote *remote) return -1; git_vector_foreach(&remote->refs, i, head) { - /* If we have the object, mark it so we don't ask for it */ - if (git_odb_exists(odb, &head->oid)) + /* If we have the object, mark it so we don't ask for it. + However if we are unshallowing, we need to ask for it + even though the head exists locally. */ + if (remote->nego.depth != INT_MAX && git_odb_exists(odb, &head->oid)) head->local = 1; else remote->need_pack = 1; @@ -169,6 +172,11 @@ int git_fetch_negotiate(git_remote *remote, const git_fetch_options *opts) remote->need_pack = 0; + if (!opts) + remote->nego.depth = -1; + else + remote->nego.depth = opts->unshallow ? INT_MAX : opts->depth; + if (filter_wants(remote, opts) < 0) return -1; @@ -176,24 +184,43 @@ int git_fetch_negotiate(git_remote *remote, const git_fetch_options *opts) if (!remote->need_pack) return 0; + if (opts && opts->unshallow && opts->depth > 0) { + git_error_set(GIT_ERROR_INVALID, "options '--depth' and '--unshallow' cannot be used together"); + return -1; + } + /* * Now we have everything set up so we can start tell the * server what we want and what we have. */ + remote->nego.refs = (const git_remote_head * const *)remote->refs.contents; + remote->nego.count = remote->refs.length; + remote->nego.shallow_roots = git__malloc(sizeof(*remote->nego.shallow_roots)); + + git_array_init(remote->nego.shallow_roots->array); + + git_repository__shallow_roots(&remote->nego.shallow_roots->array, remote->repo); + return t->negotiate_fetch(t, remote->repo, - (const git_remote_head * const *)remote->refs.contents, - remote->refs.length); + &remote->nego); } int git_fetch_download_pack(git_remote *remote) { git_transport *t = remote->transport; + int error; if (!remote->need_pack) return 0; - return t->download_pack(t, remote->repo, &remote->stats); + if ((error = t->download_pack(t, remote->repo, &remote->stats)) != 0) + return error; + + if ((error = git_repository__shallow_roots_write(remote->repo, remote->nego.shallow_roots->array)) != 0) + return error; + + return 0; } int git_fetch_options_init(git_fetch_options *opts, unsigned int version) diff --git a/src/libgit2/grafts.c b/src/libgit2/grafts.c new file mode 100644 index 000000000..7cbb1dd76 --- /dev/null +++ b/src/libgit2/grafts.c @@ -0,0 +1,247 @@ +/* + * 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. + */ + +#include "grafts.h" + +#include "futils.h" +#include "oid.h" +#include "oidarray.h" +#include "parse.h" + +bool git_shallow__enabled = false; + +struct git_grafts { + /* Map of `git_commit_graft`s */ + git_oidmap *commits; + + /* File backing the graft. NULL if it's an in-memory graft */ + char *path; + git_oid path_checksum; +}; + +int git_grafts_new(git_grafts **out) +{ + git_grafts *grafts; + + grafts = git__calloc(1, sizeof(*grafts)); + GIT_ERROR_CHECK_ALLOC(grafts); + + if ((git_oidmap_new(&grafts->commits)) < 0) { + git__free(grafts); + return -1; + } + + *out = grafts; + return 0; +} + +int git_grafts_from_file(git_grafts **out, const char *path) +{ + git_grafts *grafts = NULL; + int error; + + if (*out) + return git_grafts_refresh(*out); + + if ((error = git_grafts_new(&grafts)) < 0) + goto error; + + grafts->path = git__strdup(path); + GIT_ERROR_CHECK_ALLOC(grafts->path); + + if ((error = git_grafts_refresh(grafts)) < 0) + goto error; + + *out = grafts; +error: + if (error < 0) + git_grafts_free(grafts); + return error; +} + +void git_grafts_free(git_grafts *grafts) +{ + if (!grafts) + return; + git__free(grafts->path); + git_grafts_clear(grafts); + git_oidmap_free(grafts->commits); + git__free(grafts); +} + +void git_grafts_clear(git_grafts *grafts) +{ + git_commit_graft *graft; + + assert(grafts); + + git_oidmap_foreach_value(grafts->commits, graft, { + git__free(graft->parents.ptr); + git__free(graft); + }); + + git_oidmap_clear(grafts->commits); +} + +int git_grafts_refresh(git_grafts *grafts) +{ + git_str contents = GIT_STR_INIT; + int error, updated = 0; + + assert(grafts); + + if (!grafts->path) + return 0; + + if ((error = git_futils_readbuffer_updated(&contents, grafts->path, + (grafts->path_checksum).id, &updated)) < 0) { + if (error == GIT_ENOTFOUND) { + git_grafts_clear(grafts); + error = 0; + } + + goto cleanup; + } + + if (!updated) { + goto cleanup; + } + + if ((error = git_grafts_parse(grafts, contents.ptr, contents.size)) < 0) + goto cleanup; + +cleanup: + git_str_dispose(&contents); + return error; +} + +int git_grafts_parse(git_grafts *grafts, const char *content, size_t contentlen) +{ + git_array_oid_t parents = GIT_ARRAY_INIT; + git_parse_ctx parser; + int error; + + git_grafts_clear(grafts); + + if ((error = git_parse_ctx_init(&parser, content, contentlen)) < 0) + goto error; + + for (; parser.remain_len; git_parse_advance_line(&parser)) { + const char *line_start = parser.line, *line_end = parser.line + parser.line_len; + git_oid graft_oid; + + if ((error = git_oid__fromstrn(&graft_oid, line_start, GIT_OID_SHA1_HEXSIZE, GIT_OID_SHA1)) < 0) { + git_error_set(GIT_ERROR_GRAFTS, "invalid graft OID at line %" PRIuZ, parser.line_num); + goto error; + } + line_start += GIT_OID_SHA1_HEXSIZE; + + while (line_start < line_end && *line_start == ' ') { + git_oid *id = git_array_alloc(parents); + GIT_ERROR_CHECK_ALLOC(id); + + if ((error = git_oid__fromstrn(id, ++line_start, GIT_OID_SHA1_HEXSIZE, GIT_OID_SHA1)) < 0) { + git_error_set(GIT_ERROR_GRAFTS, "invalid parent OID at line %" PRIuZ, parser.line_num); + goto error; + } + + line_start += GIT_OID_SHA1_HEXSIZE; + } + + if ((error = git_grafts_add(grafts, &graft_oid, parents)) < 0) + goto error; + + git_array_clear(parents); + } + +error: + git_array_clear(parents); + return error; +} + +int git_grafts_add(git_grafts *grafts, const git_oid *oid, git_array_oid_t parents) +{ + git_commit_graft *graft; + git_oid *parent_oid; + int error; + size_t i; + + assert(grafts && oid); + + graft = git__calloc(1, sizeof(*graft)); + GIT_ERROR_CHECK_ALLOC(graft); + + git_array_init_to_size(graft->parents, git_array_size(parents)); + git_array_foreach(parents, i, parent_oid) { + git_oid *id = git_array_alloc(graft->parents); + GIT_ERROR_CHECK_ALLOC(id); + + git_oid_cpy(id, parent_oid); + } + git_oid_cpy(&graft->oid, oid); + + if ((error = git_grafts_remove(grafts, &graft->oid)) < 0 && error != GIT_ENOTFOUND) + goto cleanup; + if ((error = git_oidmap_set(grafts->commits, &graft->oid, graft)) < 0) + goto cleanup; + + return 0; + +cleanup: + git_array_clear(graft->parents); + git__free(graft); + return error; +} + +int git_grafts_remove(git_grafts *grafts, const git_oid *oid) +{ + git_commit_graft *graft; + int error; + + assert(grafts && oid); + + if ((graft = git_oidmap_get(grafts->commits, oid)) == NULL) + return GIT_ENOTFOUND; + + if ((error = git_oidmap_delete(grafts->commits, oid)) < 0) + return error; + + git__free(graft->parents.ptr); + git__free(graft); + + return 0; +} + +int git_grafts_get(git_commit_graft **out, git_grafts *grafts, const git_oid *oid) +{ + assert(out && grafts && oid); + if ((*out = git_oidmap_get(grafts->commits, oid)) == NULL) + return GIT_ENOTFOUND; + return 0; +} + +int git_grafts_get_oids(git_array_oid_t *out, git_grafts *grafts) +{ + const git_oid *oid; + size_t i = 0; + int error; + + assert(out && grafts); + + while ((error = git_oidmap_iterate(NULL, grafts->commits, &i, &oid)) == 0) { + git_oid *cpy = git_array_alloc(*out); + GIT_ERROR_CHECK_ALLOC(cpy); + git_oid_cpy(cpy, oid); + } + + return 0; +} + +size_t git_grafts_size(git_grafts *grafts) +{ + return git_oidmap_size(grafts->commits); +} diff --git a/src/libgit2/grafts.h b/src/libgit2/grafts.h new file mode 100644 index 000000000..4139438bb --- /dev/null +++ b/src/libgit2/grafts.h @@ -0,0 +1,37 @@ +/* + * 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_graft_h__ +#define INCLUDE_graft_h__ + +#include "common.h" +#include "oidarray.h" +#include "oidmap.h" + +/** graft commit */ +typedef struct { + git_oid oid; + git_array_oid_t parents; +} git_commit_graft; + +typedef struct git_grafts git_grafts; + +extern bool git_shallow__enabled; + +int git_grafts_new(git_grafts **out); +int git_grafts_from_file(git_grafts **out, const char *path); +void git_grafts_free(git_grafts *grafts); +void git_grafts_clear(git_grafts *grafts); + +int git_grafts_refresh(git_grafts *grafts); +int git_grafts_parse(git_grafts *grafts, const char *content, size_t contentlen); +int git_grafts_add(git_grafts *grafts, const git_oid *oid, git_array_oid_t parents); +int git_grafts_remove(git_grafts *grafts, const git_oid *oid); +int git_grafts_get(git_commit_graft **out, git_grafts *grafts, const git_oid *oid); +int git_grafts_get_oids(git_array_oid_t *out, git_grafts *grafts); +size_t git_grafts_size(git_grafts *grafts); + +#endif diff --git a/src/libgit2/libgit2.c b/src/libgit2/libgit2.c index 5d796b1f7..c5a9287fb 100644 --- a/src/libgit2/libgit2.c +++ b/src/libgit2/libgit2.c @@ -13,6 +13,7 @@ #include "cache.h" #include "common.h" #include "filter.h" +#include "grafts.h" #include "hash.h" #include "index.h" #include "merge_driver.h" @@ -435,6 +436,10 @@ int git_libgit2_opts(int key, ...) error = git_sysdir_set(GIT_SYSDIR_HOME, va_arg(ap, const char *)); break; + case GIT_OPT_ENABLE_SHALLOW: + git_shallow__enabled = (va_arg(ap, int) != 0); + break; + default: git_error_set(GIT_ERROR_INVALID, "invalid option key"); error = -1; diff --git a/src/libgit2/object.c b/src/libgit2/object.c index b7796f057..5fab77e6a 100644 --- a/src/libgit2/object.c +++ b/src/libgit2/object.c @@ -108,15 +108,13 @@ int git_object__from_raw( return 0; } -int git_object__from_odb_object( +int git_object__init_from_odb_object( git_object **object_out, git_repository *repo, git_odb_object *odb_obj, git_object_t type) { - int error; size_t object_size; - git_object_def *def; git_object *object = NULL; GIT_ASSERT_ARG(object_out); @@ -143,6 +141,23 @@ int git_object__from_odb_object( object->cached.size = odb_obj->cached.size; object->repo = repo; + *object_out = object; + return 0; +} + +int git_object__from_odb_object( + git_object **object_out, + git_repository *repo, + git_odb_object *odb_obj, + git_object_t type) +{ + int error; + git_object_def *def; + git_object *object = NULL; + + if ((error = git_object__init_from_odb_object(&object, repo, odb_obj, type)) < 0) + return error; + /* Parse raw object data */ def = &git_objects_table[odb_obj->cached.type]; GIT_ASSERT(def->free && def->parse); diff --git a/src/libgit2/object.h b/src/libgit2/object.h index a29fdfbf3..b6c604c81 100644 --- a/src/libgit2/object.h +++ b/src/libgit2/object.h @@ -36,6 +36,12 @@ int git_object__from_raw( git_object_t object_type, git_oid_t oid_type); +int git_object__init_from_odb_object( + git_object **object_out, + git_repository *repo, + git_odb_object *odb_obj, + git_object_t type); + int git_object__from_odb_object( git_object **object_out, git_repository *repo, diff --git a/src/libgit2/remote.c b/src/libgit2/remote.c index c1dccbe32..ef414209f 100644 --- a/src/libgit2/remote.c +++ b/src/libgit2/remote.c @@ -23,6 +23,7 @@ #include "git2/types.h" #include "git2/oid.h" #include "git2/net.h" +#include "transports/smart.h" #define CONFIG_URL_FMT "remote.%s.url" #define CONFIG_PUSHURL_FMT "remote.%s.pushurl" @@ -2166,6 +2167,11 @@ void git_remote_free(git_remote *remote) remote->transport = NULL; } + if (remote->nego.shallow_roots) { + git_array_clear(remote->nego.shallow_roots->array); + git__free(remote->nego.shallow_roots); + } + git_vector_free(&remote->refs); free_refspecs(&remote->refspecs); diff --git a/src/libgit2/remote.h b/src/libgit2/remote.h index 676b3c2ab..9e089be38 100644 --- a/src/libgit2/remote.h +++ b/src/libgit2/remote.h @@ -38,6 +38,7 @@ struct git_remote { git_remote_autotag_option_t download_tags; int prune_refs; int passed_refspecs; + git_fetch_negotiation nego; }; int git_remote__urlfordirection(git_str *url_out, struct git_remote *remote, int direction, const git_remote_callbacks *callbacks); diff --git a/src/libgit2/repository.c b/src/libgit2/repository.c index 804e436ab..1e356c84e 100644 --- a/src/libgit2/repository.c +++ b/src/libgit2/repository.c @@ -15,6 +15,7 @@ #include "buf.h" #include "common.h" #include "commit.h" +#include "grafts.h" #include "tag.h" #include "blob.h" #include "futils.h" @@ -151,6 +152,8 @@ int git_repository__cleanup(git_repository *repo) git_repository_submodule_cache_clear(repo); git_cache_clear(&repo->objects); git_attr_cache_flush(repo); + git_grafts_free(repo->grafts); + git_grafts_free(repo->shallow_grafts); set_config(repo, NULL); set_index(repo, NULL); @@ -842,6 +845,27 @@ out: return error; } +static int load_grafts(git_repository *repo) +{ + git_str path = GIT_STR_INIT; + int error; + + if ((error = git_repository__item_path(&path, repo, GIT_REPOSITORY_ITEM_INFO)) < 0 || + (error = git_str_joinpath(&path, path.ptr, "grafts")) < 0 || + (error = git_grafts_from_file(&repo->grafts, path.ptr)) < 0) + goto error; + + git_str_clear(&path); + + if ((error = git_str_joinpath(&path, repo->gitdir, "shallow")) < 0 || + (error = git_grafts_from_file(&repo->shallow_grafts, path.ptr)) < 0) + goto error; + +error: + git_str_dispose(&path); + return error; +} + static int find_repo( struct repo_paths *out, const char *start_path, @@ -1075,6 +1099,9 @@ int git_repository_open_ext( if (error < 0) goto cleanup; + if (git_shallow__enabled && (error = load_grafts(repo)) < 0) + goto cleanup; + if ((flags & GIT_REPOSITORY_OPEN_BARE) != 0) { repo->is_bare = 1; } else { @@ -1584,6 +1611,20 @@ int git_repository_set_index(git_repository *repo, git_index *index) return 0; } +int git_repository_grafts__weakptr(git_grafts **out, git_repository *repo) +{ + assert(out && repo && repo->grafts); + *out = repo->grafts; + return 0; +} + +int git_repository_shallow_grafts__weakptr(git_grafts **out, git_repository *repo) +{ + assert(out && repo && repo->shallow_grafts); + *out = repo->shallow_grafts; + return 0; +} + int git_repository_set_namespace(git_repository *repo, const char *namespace) { git__free(repo->namespace); @@ -3608,6 +3649,62 @@ int git_repository_state_cleanup(git_repository *repo) return git_repository__cleanup_files(repo, state_files, ARRAY_SIZE(state_files)); } +int git_repository__shallow_roots(git_array_oid_t *out, git_repository *repo) { + int error = 0; + + if (!repo->shallow_grafts && (error = load_grafts(repo)) < 0) + return error; + + if ((error = git_grafts_refresh(repo->shallow_grafts)) < 0) + return error; + + if ((error = git_grafts_get_oids(out, repo->shallow_grafts)) < 0) + return error; + + return 0; +} + +int git_repository__shallow_roots_write(git_repository *repo, git_array_oid_t roots) +{ + git_filebuf file = GIT_FILEBUF_INIT; + git_str path = GIT_STR_INIT; + size_t idx; + git_oid *oid; + int filebuf_hash, error = 0; + + assert(repo); + + filebuf_hash = git_filebuf_hash_flags(git_oid_algorithm(GIT_OID_SHA1)); + GIT_ASSERT(filebuf_hash); + + if ((error = git_str_joinpath(&path, repo->gitdir, "shallow")) < 0) + goto on_error; + + if ((error = git_filebuf_open(&file, git_str_cstr(&path), filebuf_hash, 0666)) < 0) + goto on_error; + + git_array_foreach(roots, idx, oid) { + git_filebuf_write(&file, git_oid_tostr_s(oid), GIT_OID_SHA1_HEXSIZE); + git_filebuf_write(&file, "\n", 1); + } + + git_filebuf_commit(&file); + + if ((error = load_grafts(repo)) < 0) { + error = -1; + goto on_error; + } + + if (git_array_size(roots) == 0) { + remove(path.ptr); + } + +on_error: + git_str_dispose(&path); + + return error; +} + int git_repository_is_shallow(git_repository *repo) { git_str path = GIT_STR_INIT; diff --git a/src/libgit2/repository.h b/src/libgit2/repository.h index 9a36ef972..d86b36271 100644 --- a/src/libgit2/repository.h +++ b/src/libgit2/repository.h @@ -24,6 +24,7 @@ #include "attrcache.h" #include "submodule.h" #include "diff_driver.h" +#include "grafts.h" #define DOT_GIT ".git" #define GIT_DIR DOT_GIT "/" @@ -158,6 +159,9 @@ struct git_repository { unsigned int lru_counter; + git_grafts *grafts; + git_grafts *shallow_grafts; + git_atomic32 attr_session_key; intptr_t configmap_cache[GIT_CONFIGMAP_CACHE_MAX]; @@ -189,6 +193,8 @@ int git_repository_config__weakptr(git_config **out, git_repository *repo); int git_repository_odb__weakptr(git_odb **out, git_repository *repo); int git_repository_refdb__weakptr(git_refdb **out, git_repository *repo); int git_repository_index__weakptr(git_index **out, git_repository *repo); +int git_repository_grafts__weakptr(git_grafts **out, git_repository *repo); +int git_repository_shallow_grafts__weakptr(git_grafts **out, git_repository *repo); /* * Configuration map cache @@ -240,6 +246,9 @@ extern size_t git_repository__reserved_names_posix_len; bool git_repository__reserved_names( git_str **out, size_t *outlen, git_repository *repo, bool include_ntfs); +int git_repository__shallow_roots(git_array_oid_t *out, git_repository *repo); +int git_repository__shallow_roots_write(git_repository *repo, git_array_oid_t roots); + /* * The default branch for the repository; the `init.defaultBranch` * configuration option, if set, or `master` if it is not. diff --git a/src/libgit2/transports/local.c b/src/libgit2/transports/local.c index 4d86f1713..f576682a7 100644 --- a/src/libgit2/transports/local.c +++ b/src/libgit2/transports/local.c @@ -295,15 +295,13 @@ static int local_ls(const git_remote_head ***out, size_t *size, git_transport *t static int local_negotiate_fetch( git_transport *transport, git_repository *repo, - const git_remote_head * const *refs, - size_t count) + const git_fetch_negotiation *wants) { transport_local *t = (transport_local*)transport; git_remote_head *rhead; unsigned int i; - GIT_UNUSED(refs); - GIT_UNUSED(count); + GIT_UNUSED(wants); /* Fill in the loids */ git_vector_foreach(&t->refs, i, rhead) { diff --git a/src/libgit2/transports/smart.c b/src/libgit2/transports/smart.c index c3a764bd3..da6dca039 100644 --- a/src/libgit2/transports/smart.c +++ b/src/libgit2/transports/smart.c @@ -517,3 +517,49 @@ int git_transport_smart(git_transport **out, git_remote *owner, void *param) *out = (git_transport *) t; return 0; } + +size_t git_shallowarray_count(git_shallowarray *array) +{ + return git_array_size(array->array); +} + +const git_oid * git_shallowarray_get(git_shallowarray *array, size_t idx) +{ + return git_array_get(array->array, idx); +} + +int git_shallowarray_add(git_shallowarray *array, git_oid *oid) +{ + size_t oid_index; + + if (git_array_search(&oid_index, array->array, (git_array_compare_cb)git_oid_cmp, oid) < 0) { + git_oid *tmp = git_array_alloc(array->array); + GIT_ERROR_CHECK_ALLOC(tmp); + + git_oid_cpy(tmp, oid); + } + + return 0; +} + +int git_shallowarray_remove(git_shallowarray *array, git_oid *oid) +{ + git_array_oid_t new_array = GIT_ARRAY_INIT; + git_oid *element; + git_oid *tmp; + size_t i; + + git_array_foreach(array->array, i, element) { + if (git_oid_cmp(oid, element)) { + tmp = git_array_alloc(new_array); + GIT_ERROR_CHECK_ALLOC(tmp); + + git_oid_cpy(tmp, element); + } + } + + git_array_clear(array->array); + array->array = new_array; + + return 0; +} diff --git a/src/libgit2/transports/smart.h b/src/libgit2/transports/smart.h index d71160d8e..8e06d03ef 100644 --- a/src/libgit2/transports/smart.h +++ b/src/libgit2/transports/smart.h @@ -14,6 +14,7 @@ #include "netops.h" #include "push.h" #include "str.h" +#include "oidarray.h" #include "git2/sys/transport.h" #define GIT_SIDE_BAND_DATA 1 @@ -32,6 +33,7 @@ #define GIT_CAP_SYMREF "symref" #define GIT_CAP_WANT_TIP_SHA1 "allow-tip-sha1-in-want" #define GIT_CAP_WANT_REACHABLE_SHA1 "allow-reachable-sha1-in-want" +#define GIT_CAP_SHALLOW "shallow" #define GIT_CAP_OBJECT_FORMAT "object-format=" #define GIT_CAP_AGENT "agent=" @@ -50,7 +52,9 @@ typedef enum { GIT_PKT_PROGRESS, GIT_PKT_OK, GIT_PKT_NG, - GIT_PKT_UNPACK + GIT_PKT_UNPACK, + GIT_PKT_SHALLOW, + GIT_PKT_UNSHALLOW } git_pkt_type; /* Used for multi_ack and multi_ack_detailed */ @@ -122,6 +126,11 @@ typedef struct { int unpack_ok; } git_pkt_unpack; +typedef struct { + git_pkt_type type; + git_oid oid; +} git_pkt_shallow; + typedef struct transport_smart_caps { unsigned int common:1, ofs_delta:1, @@ -134,7 +143,8 @@ typedef struct transport_smart_caps { report_status:1, thin_pack:1, want_tip_sha1:1, - want_reachable_sha1:1; + want_reachable_sha1:1, + shallow:1; char *object_format; char *agent; } transport_smart_caps; @@ -171,8 +181,7 @@ int git_smart__push(git_transport *transport, git_push *push); int git_smart__negotiate_fetch( git_transport *transport, git_repository *repo, - const git_remote_head * const *refs, - size_t count); + const git_fetch_negotiation *wants); int git_smart__download_pack( git_transport *transport, @@ -195,8 +204,12 @@ int git_pkt_parse_line(git_pkt **head, const char **endptr, const char *line, si int git_pkt_buffer_flush(git_str *buf); int git_pkt_send_flush(GIT_SOCKET s); int git_pkt_buffer_done(git_str *buf); -int git_pkt_buffer_wants(const git_remote_head * const *refs, size_t count, transport_smart_caps *caps, git_str *buf); +int git_pkt_buffer_wants(const git_fetch_negotiation *wants, transport_smart_caps *caps, git_str *buf); int git_pkt_buffer_have(git_oid *oid, git_str *buf); void git_pkt_free(git_pkt *pkt); +struct git_shallowarray { + git_array_oid_t array; +}; + #endif diff --git a/src/libgit2/transports/smart_pkt.c b/src/libgit2/transports/smart_pkt.c index 5fce42175..ec9764a87 100644 --- a/src/libgit2/transports/smart_pkt.c +++ b/src/libgit2/transports/smart_pkt.c @@ -436,6 +436,50 @@ static int unpack_pkt(git_pkt **out, const char *line, size_t len) return 0; } +static int shallow_pkt(git_pkt **out, const char *line, size_t len) +{ + git_pkt_shallow *pkt; + + pkt = git__calloc(1, sizeof(git_pkt_shallow)); + GIT_ERROR_CHECK_ALLOC(pkt); + + pkt->type = GIT_PKT_SHALLOW; + line += 7; + len -= 7; + + if (len >= GIT_OID_SHA1_HEXSIZE) { + git_oid__fromstr(&pkt->oid, line + 1, GIT_OID_SHA1); + line += GIT_OID_SHA1_HEXSIZE + 1; + len -= GIT_OID_SHA1_HEXSIZE + 1; + } + + *out = (git_pkt *) pkt; + + return 0; +} + +static int unshallow_pkt(git_pkt **out, const char *line, size_t len) +{ + git_pkt_shallow *pkt; + + pkt = git__calloc(1, sizeof(git_pkt_shallow)); + GIT_ERROR_CHECK_ALLOC(pkt); + + pkt->type = GIT_PKT_UNSHALLOW; + line += 9; + len -= 9; + + if (len >= GIT_OID_SHA1_HEXSIZE) { + git_oid__fromstr(&pkt->oid, line + 1, GIT_OID_SHA1); + line += GIT_OID_SHA1_HEXSIZE + 1; + len -= GIT_OID_SHA1_HEXSIZE + 1; + } + + *out = (git_pkt *) pkt; + + return 0; +} + static int parse_len(size_t *out, const char *line, size_t linelen) { char num[PKT_LEN_SIZE + 1]; @@ -566,6 +610,10 @@ int git_pkt_parse_line( error = ng_pkt(pkt, line, len); else if (!git__prefixncmp(line, len, "unpack")) error = unpack_pkt(pkt, line, len); + else if (!git__prefixcmp(line, "shallow")) + error = shallow_pkt(pkt, line, len); + else if (!git__prefixcmp(line, "unshallow")) + error = unshallow_pkt(pkt, line, len); else error = ref_pkt(pkt, line, len, data); @@ -638,6 +686,9 @@ static int buffer_want_with_caps( if (caps->ofs_delta) git_str_puts(&str, GIT_CAP_OFS_DELTA " "); + if (caps->shallow) + git_str_puts(&str, GIT_CAP_SHALLOW " "); + if (git_str_oom(&str)) return -1; @@ -668,8 +719,7 @@ static int buffer_want_with_caps( */ int git_pkt_buffer_wants( - const git_remote_head * const *refs, - size_t count, + const git_fetch_negotiation *wants, transport_smart_caps *caps, git_str *buf) { @@ -679,7 +729,7 @@ int git_pkt_buffer_wants( size_t oid_hexsize, want_len, i = 0; #ifdef GIT_EXPERIMENTAL_SHA256 - oid_type = count > 0 ? refs[0]->oid.type : GIT_OID_SHA1; + oid_type = wants->count > 0 ? wants->refs[0]->oid.type : GIT_OID_SHA1; #else oid_type = GIT_OID_SHA1; #endif @@ -690,20 +740,20 @@ int git_pkt_buffer_wants( oid_hexsize + 1 /* LF */; if (caps->common) { - for (; i < count; ++i) { - head = refs[i]; + for (; i < wants->count; ++i) { + head = wants->refs[i]; if (!head->local) break; } - if (buffer_want_with_caps(refs[i], caps, oid_type, buf) < 0) + if (buffer_want_with_caps(wants->refs[i], caps, oid_type, buf) < 0) return -1; i++; } - for (; i < count; ++i) { - head = refs[i]; + for (; i < wants->count; ++i) { + head = wants->refs[i]; if (head->local) continue; @@ -718,6 +768,36 @@ int git_pkt_buffer_wants( return -1; } + /* Tell the server about our shallow objects */ + for (i = 0; i < git_shallowarray_count(wants->shallow_roots); i++) { + char oid[GIT_OID_SHA1_HEXSIZE]; + git_str shallow_buf = GIT_STR_INIT; + + git_oid_fmt(oid, git_shallowarray_get(wants->shallow_roots, i)); + git_str_puts(&shallow_buf, "shallow "); + git_str_put(&shallow_buf, oid, GIT_OID_SHA1_HEXSIZE); + git_str_putc(&shallow_buf, '\n'); + + git_str_printf(buf, "%04x%s", (unsigned int)git_str_len(&shallow_buf) + 4, git_str_cstr(&shallow_buf)); + + git_str_dispose(&shallow_buf); + + if (git_str_oom(buf)) + return -1; + } + + if (wants->depth > 0) { + git_str deepen_buf = GIT_STR_INIT; + + git_str_printf(&deepen_buf, "deepen %d\n", wants->depth); + git_str_printf(buf,"%04x%s", (unsigned int)git_str_len(&deepen_buf) + 4, git_str_cstr(&deepen_buf)); + + git_str_dispose(&deepen_buf); + + if (git_str_oom(buf)) + return -1; + } + return git_pkt_buffer_flush(buf); } diff --git a/src/libgit2/transports/smart_protocol.c b/src/libgit2/transports/smart_protocol.c index 0d47acafe..c37c3cc8d 100644 --- a/src/libgit2/transports/smart_protocol.c +++ b/src/libgit2/transports/smart_protocol.c @@ -243,6 +243,12 @@ int git_smart__detect_caps( continue; } + if (!git__prefixcmp(ptr, GIT_CAP_SHALLOW)) { + caps->common = caps->shallow = 1; + ptr += strlen(GIT_CAP_SHALLOW); + continue; + } + /* We don't know this capability, so skip it */ ptr = strchr(ptr, ' '); } @@ -344,7 +350,26 @@ static int wait_while_ack(gitno_buffer *buf) return 0; } -int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, const git_remote_head * const *wants, size_t count) +static int cap_not_sup_err(const char *cap_name) +{ + git_error_set(GIT_ERROR_NET, "server doesn't support %s", cap_name); + return GIT_EINVALID; +} + +/* Disables server capabilities we're not interested in */ +static int setup_caps(transport_smart_caps *caps, const git_fetch_negotiation *wants) +{ + if (wants->depth > 0) { + if (!caps->shallow) + return cap_not_sup_err(GIT_CAP_SHALLOW); + } else { + caps->shallow = 0; + } + + return 0; +} + +int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, const git_fetch_negotiation *wants) { transport_smart *t = (transport_smart *)transport; git_revwalk__push_options opts = GIT_REVWALK__PUSH_OPTIONS_INIT; @@ -356,7 +381,10 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c unsigned int i; git_oid oid; - if ((error = git_pkt_buffer_wants(wants, count, &t->caps, &data)) < 0) + if ((error = setup_caps(&t->caps, wants)) < 0) + return error; + + if ((error = git_pkt_buffer_wants(wants, &t->caps, &data)) < 0) return error; if ((error = git_revwalk_new(&walk, repo)) < 0) @@ -366,6 +394,35 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c if ((error = git_revwalk__push_glob(walk, "refs/*", &opts)) < 0) goto on_error; + if (wants->depth > 0) { + git_pkt_shallow *pkt; + + if ((error = git_smart__negotiation_step(&t->parent, data.ptr, data.size)) < 0) + goto on_error; + + while ((error = recv_pkt((git_pkt **)&pkt, NULL, buf)) == 0) { + + if (pkt->type == GIT_PKT_SHALLOW) { + git_shallowarray_add(wants->shallow_roots, &pkt->oid); + } else if (pkt->type == GIT_PKT_UNSHALLOW) { + git_shallowarray_remove(wants->shallow_roots, &pkt->oid); + } else if (pkt->type == GIT_PKT_FLUSH) { + /* Server is done, stop processing shallow oids */ + break; + } else { + git_error_set(GIT_ERROR_NET, "Unexpected pkt type"); + goto on_error; + } + + git_pkt_free((git_pkt *) pkt); + } + + git_pkt_free((git_pkt *) pkt); + + if (error < 0) { + goto on_error; + } + } /* * Our support for ACK extensions is simply to parse them. On * the first ACK we will accept that as enough common @@ -428,7 +485,7 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c git_pkt_ack *pkt; unsigned int j; - if ((error = git_pkt_buffer_wants(wants, count, &t->caps, &data)) < 0) + if ((error = git_pkt_buffer_wants(wants, &t->caps, &data)) < 0) goto on_error; git_vector_foreach(&t->common, j, pkt) { @@ -448,7 +505,7 @@ int git_smart__negotiate_fetch(git_transport *transport, git_repository *repo, c git_pkt_ack *pkt; unsigned int j; - if ((error = git_pkt_buffer_wants(wants, count, &t->caps, &data)) < 0) + if ((error = git_pkt_buffer_wants(wants, &t->caps, &data)) < 0) goto on_error; git_vector_foreach(&t->common, j, pkt) { diff --git a/src/util/array.h b/src/util/array.h index cbab52ad1..bf66e1c5a 100644 --- a/src/util/array.h +++ b/src/util/array.h @@ -85,12 +85,14 @@ on_oom: #define git_array_foreach(a, i, element) \ for ((i) = 0; (i) < (a).size && ((element) = &(a).ptr[(i)]); (i)++) +typedef int (*git_array_compare_cb)(const void *, const void *); + GIT_INLINE(int) git_array__search( size_t *out, void *array_ptr, size_t item_size, size_t array_len, - int (*compare)(const void *, const void *), + git_array_compare_cb compare, const void *key) { size_t lim; diff --git a/tests/libgit2/clone/shallow.c b/tests/libgit2/clone/shallow.c new file mode 100644 index 000000000..eacfe1bcf --- /dev/null +++ b/tests/libgit2/clone/shallow.c @@ -0,0 +1,173 @@ +#include "clar_libgit2.h" +#include "futils.h" +#include "repository.h" + +void test_clone_shallow__initialize(void) +{ + cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 1)); +} + +void test_clone_shallow__cleanup(void) +{ + git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 0); +} + +static int remote_single_branch(git_remote **out, git_repository *repo, const char *name, const char *url, void *payload) +{ + GIT_UNUSED(payload); + + cl_git_pass(git_remote_create_with_fetchspec(out, repo, name, url, "+refs/heads/master:refs/remotes/origin/master")); + + return 0; +} + +void test_clone_shallow__clone_depth_zero(void) +{ + git_str path = GIT_STR_INIT; + git_repository *repo; + git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT; + git_array_oid_t roots = GIT_ARRAY_INIT; + + clone_opts.fetch_opts.depth = 0; + clone_opts.remote_cb = remote_single_branch; + + git_str_joinpath(&path, clar_sandbox_path(), "shallowclone_0"); + + cl_git_pass(git_clone(&repo, "https://github.com/libgit2/TestGitRepository", git_str_cstr(&path), &clone_opts)); + + /* cloning with depth 0 results in a full clone. */ + cl_assert_equal_b(false, git_repository_is_shallow(repo)); + + /* full clones do not have shallow roots. */ + cl_git_pass(git_repository__shallow_roots(&roots, repo)); + cl_assert_equal_i(0, roots.size); + + git_array_clear(roots); + git_str_dispose(&path); + git_repository_free(repo); +} + +void test_clone_shallow__clone_depth_one(void) +{ + git_str path = GIT_STR_INIT; + git_repository *repo; + git_revwalk *walk; + git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT; + git_oid oid; + git_array_oid_t roots = GIT_ARRAY_INIT; + size_t num_commits = 0; + int error = 0; + + clone_opts.fetch_opts.depth = 1; + clone_opts.remote_cb = remote_single_branch; + + git_str_joinpath(&path, clar_sandbox_path(), "shallowclone_1"); + + cl_git_pass(git_clone(&repo, "https://github.com/libgit2/TestGitRepository", git_str_cstr(&path), &clone_opts)); + + cl_assert_equal_b(true, git_repository_is_shallow(repo)); + + cl_git_pass(git_repository__shallow_roots(&roots, repo)); + cl_assert_equal_i(1, roots.size); + cl_assert_equal_s("49322bb17d3acc9146f98c97d078513228bbf3c0", git_oid_tostr_s(&roots.ptr[0])); + + git_revwalk_new(&walk, repo); + + git_revwalk_push_head(walk); + + while ((error = git_revwalk_next(&oid, walk)) == GIT_OK) { + num_commits++; + } + + cl_assert_equal_i(num_commits, 1); + cl_assert_equal_i(error, GIT_ITEROVER); + + git_array_clear(roots); + git_str_dispose(&path); + git_revwalk_free(walk); + git_repository_free(repo); +} + +void test_clone_shallow__clone_depth_five(void) +{ + git_str path = GIT_STR_INIT; + git_repository *repo; + git_revwalk *walk; + git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT; + git_oid oid; + git_array_oid_t roots = GIT_ARRAY_INIT; + size_t num_commits = 0; + int error = 0; + + clone_opts.fetch_opts.depth = 5; + clone_opts.remote_cb = remote_single_branch; + + git_str_joinpath(&path, clar_sandbox_path(), "shallowclone_5"); + + cl_git_pass(git_clone(&repo, "https://github.com/libgit2/TestGitRepository", git_str_cstr(&path), &clone_opts)); + + cl_assert_equal_b(true, git_repository_is_shallow(repo)); + + cl_git_pass(git_repository__shallow_roots(&roots, repo)); + cl_assert_equal_i(3, roots.size); + cl_assert_equal_s("c070ad8c08840c8116da865b2d65593a6bb9cd2a", git_oid_tostr_s(&roots.ptr[0])); + cl_assert_equal_s("0966a434eb1a025db6b71485ab63a3bfbea520b6", git_oid_tostr_s(&roots.ptr[1])); + cl_assert_equal_s("83834a7afdaa1a1260568567f6ad90020389f664", git_oid_tostr_s(&roots.ptr[2])); + + git_revwalk_new(&walk, repo); + + git_revwalk_push_head(walk); + + while ((error = git_revwalk_next(&oid, walk)) == GIT_OK) { + num_commits++; + } + + cl_assert_equal_i(num_commits, 13); + cl_assert_equal_i(error, GIT_ITEROVER); + + git_array_clear(roots); + git_str_dispose(&path); + git_revwalk_free(walk); + git_repository_free(repo); +} + +void test_clone_shallow__unshallow(void) +{ + git_str path = GIT_STR_INIT; + git_repository *repo; + git_revwalk *walk; + git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT; + git_fetch_options fetch_opts = GIT_FETCH_OPTIONS_INIT; + git_remote *origin = NULL; + git_oid oid; + size_t num_commits = 0; + int error = 0; + + clone_opts.fetch_opts.depth = 5; + clone_opts.remote_cb = remote_single_branch; + + git_str_joinpath(&path, clar_sandbox_path(), "unshallow"); + cl_git_pass(git_clone(&repo, "https://github.com/libgit2/TestGitRepository", git_str_cstr(&path), &clone_opts)); + cl_assert_equal_b(true, git_repository_is_shallow(repo)); + + fetch_opts.unshallow = 1; + cl_git_pass(git_remote_lookup(&origin, repo, "origin")); + + cl_git_pass(git_remote_fetch(origin, NULL, &fetch_opts, NULL)); + cl_assert_equal_b(false, git_repository_is_shallow(repo)); + + git_revwalk_new(&walk, repo); + git_revwalk_push_head(walk); + + while ((error = git_revwalk_next(&oid, walk)) == GIT_OK) { + num_commits++; + } + + cl_assert_equal_i(num_commits, 21); + cl_assert_equal_i(error, GIT_ITEROVER); + + git_remote_free(origin); + git_str_dispose(&path); + git_revwalk_free(walk); + git_repository_free(repo); +} diff --git a/tests/libgit2/grafts/basic.c b/tests/libgit2/grafts/basic.c new file mode 100644 index 000000000..5ad437b19 --- /dev/null +++ b/tests/libgit2/grafts/basic.c @@ -0,0 +1,123 @@ +#include "clar_libgit2.h" + +#include "futils.h" +#include "grafts.h" + +static git_repository *g_repo; + +void test_grafts_basic__initialize(void) +{ + git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 1); + g_repo = cl_git_sandbox_init("grafted.git"); +} + +void test_grafts_basic__cleanup(void) +{ + git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 0); + cl_git_sandbox_cleanup(); +} + +void test_grafts_basic__graft_add(void) +{ + git_array_oid_t parents = GIT_ARRAY_INIT; + git_oid oid_src, *oid1; + git_commit_graft *graft; + git_grafts *grafts; + + cl_git_pass(git_grafts_new(&grafts)); + + cl_assert(oid1 = git_array_alloc(parents)); + cl_git_pass(git_oid__fromstr(&oid_src, "2f3053cbff8a4ca2f0666de364ddb734a28a31a9", GIT_OID_SHA1)); + git_oid_cpy(oid1, &oid_src); + + git_oid__fromstr(&oid_src, "f503807ffa920e407a600cfaee96b7152259acc7", GIT_OID_SHA1); + cl_git_pass(git_grafts_add(grafts, &oid_src, parents)); + git_array_clear(parents); + + cl_assert_equal_i(1, git_grafts_size(grafts)); + cl_git_pass(git_grafts_get(&graft, grafts, &oid_src)); + cl_assert_equal_s("f503807ffa920e407a600cfaee96b7152259acc7", git_oid_tostr_s(&graft->oid)); + cl_assert_equal_i(1, git_array_size(graft->parents)); + cl_assert_equal_s("2f3053cbff8a4ca2f0666de364ddb734a28a31a9", git_oid_tostr_s(git_array_get(graft->parents, 0))); + + git_grafts_free(grafts); +} + +void test_grafts_basic__grafted_revwalk(void) +{ + git_revwalk *w; + git_oid oids[10]; + size_t i = 0; + git_commit *commit; + + cl_git_pass(git_revwalk_new(&w, g_repo)); + cl_git_pass(git_revwalk_push_ref(w, "refs/heads/branch")); + + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[0]), "8a00e91619098618be97c0d2ceabb05a2c58edd9"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[1]), "f503807ffa920e407a600cfaee96b7152259acc7"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[2]), "2f3053cbff8a4ca2f0666de364ddb734a28a31a9"); + + cl_git_fail_with(GIT_ITEROVER, git_revwalk_next(&oids[i++], w)); + + cl_git_pass(git_commit_lookup(&commit, g_repo, &oids[0])); + + cl_assert_equal_i(1, git_commit_parentcount(commit)); + + git_commit_free(commit); + git_revwalk_free(w); +} + +void test_grafts_basic__grafted_objects(void) +{ + git_oid oid; + git_commit *commit; + + cl_git_pass(git_oid__fromstr(&oid, "f503807ffa920e407a600cfaee96b7152259acc7", GIT_OID_SHA1)); + cl_git_pass(git_commit_lookup(&commit, g_repo, &oid)); + cl_assert_equal_i(1, git_commit_parentcount(commit)); + git_commit_free(commit); + + cl_git_pass(git_oid__fromstr(&oid, "0512adebd3782157f0d5c9b22b043f87b4aaff9e", GIT_OID_SHA1)); + cl_git_pass(git_commit_lookup(&commit, g_repo, &oid)); + cl_assert_equal_i(1, git_commit_parentcount(commit)); + git_commit_free(commit); + + cl_git_pass(git_oid__fromstr(&oid, "66cc22a015f6ca75b34c82d28f78ba663876bade", GIT_OID_SHA1)); + cl_git_pass(git_commit_lookup(&commit, g_repo, &oid)); + cl_assert_equal_i(4, git_commit_parentcount(commit)); + git_commit_free(commit); +} + +void test_grafts_basic__grafted_merge_revwalk(void) +{ + git_revwalk *w; + git_oid oids[10]; + size_t i = 0; + + cl_git_pass(git_revwalk_new(&w, g_repo)); + cl_git_pass(git_revwalk_push_ref(w, "refs/heads/bottom")); + + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "66cc22a015f6ca75b34c82d28f78ba663876bade"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "e414f42f4e6bc6934563a2349a8600f0ab68618e"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "8a00e91619098618be97c0d2ceabb05a2c58edd9"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "1c18e80a276611bb9b146590616bbc5aebdf2945"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "d7224d49d6d5aff6ade596ed74f4bcd4f77b29e2"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "0512adebd3782157f0d5c9b22b043f87b4aaff9e"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "f503807ffa920e407a600cfaee96b7152259acc7"); + cl_git_pass(git_revwalk_next(&oids[i++], w)); + cl_assert_equal_s(git_oid_tostr_s(&oids[i - 1]), "2f3053cbff8a4ca2f0666de364ddb734a28a31a9"); + + cl_git_fail_with(GIT_ITEROVER, git_revwalk_next(&oids[i++], w)); + + git_revwalk_free(w); +} diff --git a/tests/libgit2/grafts/parse.c b/tests/libgit2/grafts/parse.c new file mode 100644 index 000000000..149b01c8c --- /dev/null +++ b/tests/libgit2/grafts/parse.c @@ -0,0 +1,149 @@ +#include "clar_libgit2.h" + +#include "grafts.h" + +#define OID0 "c0368f9f9743e950e6cfe1f45a649f8a9dfcd97e" +#define OID1 "cfc50a0db87ce908fb8a8c5b8f7b4ab96eee8643" +#define OID2 "6914d97cd08b9edf5e855fca211c750fa82fd80a" +#define OID3 "516521937d0e9ce9d0d836149a0702671f326b4a" +#define OID4 "e2c29d67ef2f217650196f94c796f0532b8caad6" +#define OID5 "79bcb936596cb50353fe7be28b7444e66e4a2842" +#define OID6 "b9c54107d57c17dbcaf646c4d52f66eb9e69d23d" +#define OID7 "9f8a746e9ad7b58cc840016bc3944d5ad262acb5" +#define OID8 "392f4beef7d0d15b2bc5b1abe1a754eba0ec36da" + +#define OID_TRUNCATED "392f4beef7d0d15b2bc5b1abe1a754eba0ec36d" +#define OID_NONHEX "9f8a746e9ax7b58cc840016bc3944d5ad262acb5" + +static git_grafts *grafts; + +void test_grafts_parse__initialize(void) +{ + cl_git_pass(git_grafts_new(&grafts)); +} + +void test_grafts_parse__cleanup(void) +{ + git_grafts_free(grafts); + grafts = NULL; +} + +static void assert_parse_succeeds(git_grafts *grafts, const char *string, size_t n) +{ + cl_git_pass(git_grafts_parse(grafts, string, strlen(string))); + cl_assert_equal_i(git_grafts_size(grafts), n); +} + +static void assert_parse_fails(git_grafts *grafts, const char *string) +{ + cl_git_fail(git_grafts_parse(grafts, string, strlen(string))); +} + +static void assert_graft_contains(git_grafts *grafts, const char *graft, size_t n, ...) +{ + git_commit_graft *commit; + git_oid oid; + va_list ap; + size_t i = 0; + + cl_git_pass(git_oid__fromstr(&oid, graft, GIT_OID_SHA1)); + cl_git_pass(git_grafts_get(&commit, grafts, &oid)); + cl_assert_equal_oid(&commit->oid, &oid); + cl_assert_equal_i(commit->parents.size, n); + + va_start(ap, n); + while (i < n) { + cl_git_pass(git_oid__fromstr(&oid, va_arg(ap, const char *), GIT_OID_SHA1)); + cl_assert_equal_oid(&commit->parents.ptr[i], &oid); + i++; + } + va_end(ap); +} + +void test_grafts_parse__single_oid(void) +{ + assert_parse_succeeds(grafts, OID1, 1); + assert_graft_contains(grafts, OID1, 0); +} + +void test_grafts_parse__single_oid_with_newline(void) +{ + assert_parse_succeeds(grafts, OID1 "\n", 1); + assert_graft_contains(grafts, OID1, 0); +} + +void test_grafts_parse__multiple_oids(void) +{ + assert_parse_succeeds(grafts, OID1 "\n" OID2 "\n" OID3, 3); + assert_graft_contains(grafts, OID1, 0); + assert_graft_contains(grafts, OID2, 0); + assert_graft_contains(grafts, OID3, 0); +} + +void test_grafts_parse__same_oid(void) +{ + assert_parse_succeeds(grafts, OID1 "\n" OID1, 1); + assert_graft_contains(grafts, OID1, 0); +} + +void test_grafts_parse__oid_with_parent(void) +{ + assert_parse_succeeds(grafts, OID1 " " OID2, 1); + assert_graft_contains(grafts, OID1, 1, OID2); +} + +void test_grafts_parse__oid_with_parent_and_newline(void) +{ + assert_parse_succeeds(grafts, OID1 " " OID2 "\n", 1); + assert_graft_contains(grafts, OID1, 1, OID2); +} + +void test_grafts_parse__oid_with_multiple_parents(void) +{ + assert_parse_succeeds(grafts, OID1 " " OID2 " " OID3 " " OID4 " " OID5, 1); + assert_graft_contains(grafts, OID1, 4, OID2, OID3, OID4, OID5); +} + +void test_grafts_parse__multiple_oids_with_multiple_parents(void) +{ + assert_parse_succeeds(grafts, + OID1 " " OID2 " " OID3 " " OID4 " " OID5 "\n" + OID6 " " OID7 " " OID8 "\n" , 2); + assert_graft_contains(grafts, OID1, 4, OID2, OID3, OID4, OID5); + assert_graft_contains(grafts, OID6, 2, OID7, OID8); +} + +void test_grafts_parse__multiple_spaces_fails(void) +{ + assert_parse_fails(grafts, OID1 " " OID2); +} + +void test_grafts_parse__trailing_space_fails(void) +{ + assert_parse_fails(grafts, OID1 " " OID2 " "); +} + +void test_grafts_parse__invalid_character_inbetween_fails(void) +{ + assert_parse_fails(grafts, OID1 " x " OID2); +} + +void test_grafts_parse__truncated_oid_fails(void) +{ + assert_parse_fails(grafts, OID_TRUNCATED); +} + +void test_grafts_parse__truncated_parent_fails(void) +{ + assert_parse_fails(grafts, OID1 " " OID_TRUNCATED); +} + +void test_grafts_parse__invalid_oid_fails(void) +{ + assert_parse_fails(grafts, OID_NONHEX); +} + +void test_grafts_parse__invalid_parent_fails(void) +{ + assert_parse_fails(grafts, OID1 " " OID_NONHEX); +} diff --git a/tests/libgit2/grafts/shallow.c b/tests/libgit2/grafts/shallow.c new file mode 100644 index 000000000..8c2723922 --- /dev/null +++ b/tests/libgit2/grafts/shallow.c @@ -0,0 +1,146 @@ +#include "clar_libgit2.h" + +#include "futils.h" +#include "grafts.h" +#include "repository.h" + +static git_repository *g_repo; +static git_oid g_shallow_oid; + +void test_grafts_shallow__set_feature_flag(void) +{ + cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 1)); +} + +void test_grafts_shallow__unset_feature_flag(void) +{ + cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 0)); +} + +void test_grafts_shallow__initialize(void) +{ + git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 1); + cl_git_pass(git_oid__fromstr(&g_shallow_oid, "be3563ae3f795b2b4353bcce3a527ad0a4f7f644", GIT_OID_SHA1)); +} + +void test_grafts_shallow__cleanup(void) +{ + git_libgit2_opts(GIT_OPT_ENABLE_SHALLOW, 0); + cl_git_sandbox_cleanup(); +} + +void test_grafts_shallow__no_shallow_file(void) +{ + g_repo = cl_git_sandbox_init("testrepo.git"); + cl_assert_equal_i(0, git_repository_is_shallow(g_repo)); +} + +void test_grafts_shallow__empty_shallow_file(void) +{ + g_repo = cl_git_sandbox_init("testrepo.git"); + cl_git_mkfile("testrepo.git/shallow", ""); + cl_assert_equal_i(0, git_repository_is_shallow(g_repo)); +} + +void test_grafts_shallow__shallow_repo(void) +{ + g_repo = cl_git_sandbox_init("shallow.git"); + cl_assert_equal_i(1, git_repository_is_shallow(g_repo)); +} + +void test_grafts_shallow__clears_errors(void) +{ + g_repo = cl_git_sandbox_init("testrepo.git"); + cl_assert_equal_i(0, git_repository_is_shallow(g_repo)); + cl_assert_equal_p(NULL, git_error_last()); +} + +void test_grafts_shallow__shallow_oids(void) +{ + git_commit_graft *graft; + git_grafts *grafts; + + g_repo = cl_git_sandbox_init("shallow.git"); + + cl_git_pass(git_repository_shallow_grafts__weakptr(&grafts, g_repo)); + cl_assert_equal_i(1, git_grafts_size(grafts)); + cl_git_pass(git_grafts_get(&graft, grafts, &g_shallow_oid)); +} + +void test_grafts_shallow__cache_clearing(void) +{ + git_commit_graft *graft; + git_grafts *grafts; + git_oid tmp_oid; + + cl_git_pass(git_oid__fromstr(&tmp_oid, "0000000000000000000000000000000000000000", GIT_OID_SHA1)); + g_repo = cl_git_sandbox_init("shallow.git"); + cl_git_pass(git_repository_shallow_grafts__weakptr(&grafts, g_repo)); + + cl_assert_equal_i(1, git_grafts_size(grafts)); + cl_git_pass(git_grafts_get(&graft, grafts, &g_shallow_oid)); + + cl_git_mkfile("shallow.git/shallow", + "be3563ae3f795b2b4353bcce3a527ad0a4f7f644\n" + "0000000000000000000000000000000000000000\n" + ); + + cl_git_pass(git_grafts_refresh(grafts)); + cl_assert_equal_i(2, git_grafts_size(grafts)); + cl_git_pass(git_grafts_get(&graft, grafts, &g_shallow_oid)); + cl_git_pass(git_grafts_get(&graft, grafts, &tmp_oid)); + + cl_git_pass(p_unlink("shallow.git/shallow")); + cl_git_pass(git_grafts_refresh(grafts)); + cl_assert_equal_i(0, git_grafts_size(grafts)); +} + +void test_grafts_shallow__errors_on_borked(void) +{ + git_grafts *grafts; + + g_repo = cl_git_sandbox_init("shallow.git"); + + cl_git_mkfile("shallow.git/shallow", "lolno"); + cl_git_pass(git_repository_shallow_grafts__weakptr(&grafts, g_repo)); + cl_git_fail(git_grafts_refresh(grafts)); + cl_assert_equal_i(0, git_grafts_size(grafts)); + + cl_git_mkfile("shallow.git/shallow", "lolno\n"); + cl_git_pass(git_repository_shallow_grafts__weakptr(&grafts, g_repo)); + cl_git_fail(git_grafts_refresh(grafts)); + cl_assert_equal_i(0, git_grafts_size(grafts)); +} + +void test_grafts_shallow__revwalk_behavior(void) +{ + git_revwalk *w; + git_oid oid_1, oid_2, oid_3; + + g_repo = cl_git_sandbox_init("shallow.git"); + + cl_git_pass(git_revwalk_new(&w, g_repo)); + cl_git_pass(git_revwalk_push_head(w)); + + cl_git_pass(git_revwalk_next(&oid_1, w)); // a65fedf39aefe402d3bb6e24df4d4f5fe4547750 + cl_git_pass(git_revwalk_next(&oid_2, w)); // be3563ae3f795b2b4353bcce3a527ad0a4f7f644 + cl_git_fail_with(GIT_ITEROVER, git_revwalk_next(&oid_3, w)); + + cl_assert_equal_s(git_oid_tostr_s(&oid_1), "a65fedf39aefe402d3bb6e24df4d4f5fe4547750"); + cl_assert_equal_s(git_oid_tostr_s(&oid_2), "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"); + + git_revwalk_free(w); +} + +void test_grafts_shallow__grafted_object(void) +{ + git_commit *commit; + + g_repo = cl_git_sandbox_init("shallow.git"); + + cl_git_pass(git_commit_lookup(&commit, g_repo, &g_shallow_oid)); + + cl_assert_equal_i(0, git_commit_parentcount(commit)); + + git_commit_free(commit); +} diff --git a/tests/libgit2/transports/smart/shallowarray.c b/tests/libgit2/transports/smart/shallowarray.c new file mode 100644 index 000000000..ec4388e42 --- /dev/null +++ b/tests/libgit2/transports/smart/shallowarray.c @@ -0,0 +1,52 @@ +#include "clar_libgit2.h" + +#include "git2/oid.h" +#include "git2/transport.h" + +#include "common.h" +#include "transports/smart.h" +#include "oid.h" + +#include <assert.h> + +#define oid_0 "c070ad8c08840c8116da865b2d65593a6bb9cd2a" +#define oid_1 "0966a434eb1a025db6b71485ab63a3bfbea520b6" +#define oid_2 "83834a7afdaa1a1260568567f6ad90020389f664" + +void test_transports_smart_shallowarray__add_and_remove_oid_from_shallowarray(void) +{ + git_oid oid_0_obj, oid_1_obj, oid_2_obj; + git_shallowarray *shallow_roots = git__malloc(sizeof(git_shallowarray)); + git_array_init(shallow_roots->array); + + git_oid__fromstr(&oid_0_obj, oid_0, GIT_OID_SHA1); + git_oid__fromstr(&oid_1_obj, oid_1, GIT_OID_SHA1); + git_oid__fromstr(&oid_2_obj, oid_2, GIT_OID_SHA1); + + git_shallowarray_add(shallow_roots, &oid_0_obj); + git_shallowarray_add(shallow_roots, &oid_1_obj); + git_shallowarray_add(shallow_roots, &oid_2_obj); + + cl_assert_equal_i(3, shallow_roots->array.size); + cl_assert_equal_s("c070ad8c08840c8116da865b2d65593a6bb9cd2a", git_oid_tostr_s(&shallow_roots->array.ptr[0])); + cl_assert_equal_s("0966a434eb1a025db6b71485ab63a3bfbea520b6", git_oid_tostr_s(&shallow_roots->array.ptr[1])); + cl_assert_equal_s("83834a7afdaa1a1260568567f6ad90020389f664", git_oid_tostr_s(&shallow_roots->array.ptr[2])); + + git_shallowarray_remove(shallow_roots, &oid_2_obj); + + cl_assert_equal_i(2, shallow_roots->array.size); + cl_assert_equal_s("c070ad8c08840c8116da865b2d65593a6bb9cd2a", git_oid_tostr_s(&shallow_roots->array.ptr[0])); + cl_assert_equal_s("0966a434eb1a025db6b71485ab63a3bfbea520b6", git_oid_tostr_s(&shallow_roots->array.ptr[1])); + + git_shallowarray_remove(shallow_roots, &oid_1_obj); + + cl_assert_equal_i(1, shallow_roots->array.size); + cl_assert_equal_s("c070ad8c08840c8116da865b2d65593a6bb9cd2a", git_oid_tostr_s(&shallow_roots->array.ptr[0])); + + git_shallowarray_remove(shallow_roots, &oid_0_obj); + + cl_assert_equal_i(0, shallow_roots->array.size); + + git_array_clear(shallow_roots->array); + git__free(shallow_roots); +} diff --git a/tests/resources/grafted.git/HEAD b/tests/resources/grafted.git/HEAD new file mode 100644 index 000000000..cb089cd89 --- /dev/null +++ b/tests/resources/grafted.git/HEAD @@ -0,0 +1 @@ +ref: refs/heads/master diff --git a/tests/resources/grafted.git/config b/tests/resources/grafted.git/config new file mode 100644 index 000000000..e6da23157 --- /dev/null +++ b/tests/resources/grafted.git/config @@ -0,0 +1,6 @@ +[core] + repositoryformatversion = 0 + filemode = true + bare = true + ignorecase = true + precomposeunicode = true diff --git a/tests/resources/grafted.git/info/grafts b/tests/resources/grafted.git/info/grafts new file mode 100644 index 000000000..bb9df8c0a --- /dev/null +++ b/tests/resources/grafted.git/info/grafts @@ -0,0 +1,3 @@ +f503807ffa920e407a600cfaee96b7152259acc7 2f3053cbff8a4ca2f0666de364ddb734a28a31a9 +0512adebd3782157f0d5c9b22b043f87b4aaff9e 2f3053cbff8a4ca2f0666de364ddb734a28a31a9 +66cc22a015f6ca75b34c82d28f78ba663876bade e414f42f4e6bc6934563a2349a8600f0ab68618e 8a00e91619098618be97c0d2ceabb05a2c58edd9 1c18e80a276611bb9b146590616bbc5aebdf2945 2f3053cbff8a4ca2f0666de364ddb734a28a31a9 diff --git a/tests/resources/grafted.git/objects/05/12adebd3782157f0d5c9b22b043f87b4aaff9e b/tests/resources/grafted.git/objects/05/12adebd3782157f0d5c9b22b043f87b4aaff9e Binary files differnew file mode 100644 index 000000000..16880d596 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