From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com> To: git@vger.kernel.org Cc: jonathantanmy@google.com, dstolee@microsoft.com, "Elijah Newren" <newren@gmail.com>, "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>, "Elijah Newren" <newren@gmail.com>, "Elijah Newren" <newren@gmail.com> Subject: [PATCH v3 14/20] merge-ort: step 2 of tree writing -- function to create tree object Date: Sun, 13 Dec 2020 08:04:21 +0000 [thread overview] Message-ID: <b5d9ba10f8c83b744516d54fbbdf40552dd5b7b6.1607846667.git.gitgitgadget@gmail.com> (raw) In-Reply-To: <pull.923.v3.git.git.1607846667.gitgitgadget@gmail.com> From: Elijah Newren <newren@gmail.com> Create a new function, write_tree(), which will take a list of basenames, modes, and oids for a single directory and create a tree object in the object-store. We do not yet have just basenames, modes, and oids for just a single directory (we have a mixture of entries from all directory levels in the hierarchy) so we still die() before the current call to write_tree(), but the next patch will rectify that. Signed-off-by: Elijah Newren <newren@gmail.com> --- merge-ort.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 66 insertions(+), 1 deletion(-) diff --git a/merge-ort.c b/merge-ort.c index 95369c6a052..f7041cfeac4 100644 --- a/merge-ort.c +++ b/merge-ort.c @@ -19,6 +19,7 @@ #include "diff.h" #include "diffcore.h" +#include "object-store.h" #include "strmap.h" #include "tree.h" #include "xdiff-interface.h" @@ -523,6 +524,62 @@ struct directory_versions { struct string_list versions; }; +static int tree_entry_order(const void *a_, const void *b_) +{ + const struct string_list_item *a = a_; + const struct string_list_item *b = b_; + + const struct merged_info *ami = a->util; + const struct merged_info *bmi = b->util; + return base_name_compare(a->string, strlen(a->string), ami->result.mode, + b->string, strlen(b->string), bmi->result.mode); +} + +static void write_tree(struct object_id *result_oid, + struct string_list *versions, + unsigned int offset, + size_t hash_size) +{ + size_t maxlen = 0, extra; + unsigned int nr = versions->nr - offset; + struct strbuf buf = STRBUF_INIT; + struct string_list relevant_entries = STRING_LIST_INIT_NODUP; + int i; + + /* + * We want to sort the last (versions->nr-offset) entries in versions. + * Do so by abusing the string_list API a bit: make another string_list + * that contains just those entries and then sort them. + * + * We won't use relevant_entries again and will let it just pop off the + * stack, so there won't be allocation worries or anything. + */ + relevant_entries.items = versions->items + offset; + relevant_entries.nr = versions->nr - offset; + QSORT(relevant_entries.items, relevant_entries.nr, tree_entry_order); + + /* Pre-allocate some space in buf */ + extra = hash_size + 8; /* 8: 6 for mode, 1 for space, 1 for NUL char */ + for (i = 0; i < nr; i++) { + maxlen += strlen(versions->items[offset+i].string) + extra; + } + strbuf_grow(&buf, maxlen); + + /* Write each entry out to buf */ + for (i = 0; i < nr; i++) { + struct merged_info *mi = versions->items[offset+i].util; + struct version_info *ri = &mi->result; + strbuf_addf(&buf, "%o %s%c", + ri->mode, + versions->items[offset+i].string, '\0'); + strbuf_add(&buf, ri->oid.hash, hash_size); + } + + /* Write this object file out, and record in result_oid */ + write_object_file(buf.buf, buf.len, tree_type, result_oid); + strbuf_release(&buf); +} + static void record_entry_for_tree(struct directory_versions *dir_metadata, const char *path, struct merged_info *mi) @@ -675,9 +732,17 @@ static void process_entries(struct merge_options *opt, } } + /* + * TODO: We can't actually write a tree yet, because dir_metadata just + * contains all basenames of all files throughout the tree with their + * mode and hash. Not only is that a nonsensical tree, it will have + * lots of duplicates for paths such as "Makefile" or ".gitignore". + */ + die("Not yet implemented; need to process subtrees separately"); + write_tree(result_oid, &dir_metadata.versions, 0, + opt->repo->hash_algo->rawsz); string_list_clear(&plist, 0); string_list_clear(&dir_metadata.versions, 0); - die("Tree creation not yet implemented"); } void merge_switch_to_result(struct merge_options *opt, -- gitgitgadget
next prev parent reply other threads:[~2020-12-13 8:07 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-29 7:43 [PATCH 00/20] fundamentals of merge-ort implementation Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 01/20] merge-ort: setup basic internal data structures Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 02/20] merge-ort: add some high-level algorithm structure Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 03/20] merge-ort: port merge_start() from merge-recursive Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 04/20] merge-ort: use histogram diff Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 05/20] merge-ort: add an err() function similar to one from merge-recursive Elijah Newren via GitGitGadget 2020-11-29 10:23 ` Ævar Arnfjörð Bjarmason 2020-11-30 16:56 ` Elijah Newren 2020-11-29 10:26 ` Ævar Arnfjörð Bjarmason 2020-11-29 7:43 ` [PATCH 06/20] merge-ort: implement a very basic collect_merge_info() Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 07/20] merge-ort: avoid repeating fill_tree_descriptor() on the same tree Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 08/20] merge-ort: compute a few more useful fields for collect_merge_info Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 09/20] merge-ort: record stage and auxiliary info for every path Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 10/20] merge-ort: avoid recursing into identical trees Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 11/20] merge-ort: add a preliminary simple process_entries() implementation Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 12/20] merge-ort: have process_entries operate in a defined order Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 13/20] merge-ort: step 1 of tree writing -- record basenames, modes, and oids Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 14/20] merge-ort: step 2 of tree writing -- function to create tree object Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 15/20] merge-ort: step 3 of tree writing -- handling subdirectories as we go Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 16/20] merge-ort: basic outline for merge_switch_to_result() Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 17/20] merge-ort: add implementation of checkout() Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 18/20] tree: enable cmp_cache_name_compare() to be used elsewhere Elijah Newren via GitGitGadget 2020-11-29 7:43 ` [PATCH 19/20] merge-ort: add implementation of record_conflicted_index_entries() Elijah Newren via GitGitGadget 2020-11-29 10:20 ` Ævar Arnfjörð Bjarmason 2020-11-29 7:43 ` [PATCH 20/20] merge-ort: free data structures in merge_finalize() Elijah Newren via GitGitGadget 2020-11-29 7:47 ` [PATCH 00/20] fundamentals of merge-ort implementation Elijah Newren 2020-12-04 20:47 ` [PATCH v2 " Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 01/20] merge-ort: setup basic internal data structures Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 02/20] merge-ort: add some high-level algorithm structure Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 03/20] merge-ort: port merge_start() from merge-recursive Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 04/20] merge-ort: use histogram diff Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 05/20] merge-ort: add an err() function similar to one from merge-recursive Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 06/20] merge-ort: implement a very basic collect_merge_info() Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 07/20] merge-ort: avoid repeating fill_tree_descriptor() on the same tree Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 08/20] merge-ort: compute a few more useful fields for collect_merge_info Elijah Newren via GitGitGadget 2020-12-04 20:47 ` [PATCH v2 09/20] merge-ort: record stage and auxiliary info for every path Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 10/20] merge-ort: avoid recursing into identical trees Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 11/20] merge-ort: add a preliminary simple process_entries() implementation Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 12/20] merge-ort: have process_entries operate in a defined order Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 13/20] merge-ort: step 1 of tree writing -- record basenames, modes, and oids Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 14/20] merge-ort: step 2 of tree writing -- function to create tree object Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 15/20] merge-ort: step 3 of tree writing -- handling subdirectories as we go Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 16/20] merge-ort: basic outline for merge_switch_to_result() Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 17/20] merge-ort: add implementation of checkout() Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 18/20] tree: enable cmp_cache_name_compare() to be used elsewhere Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 19/20] merge-ort: add implementation of record_conflicted_index_entries() Elijah Newren via GitGitGadget 2020-12-04 20:48 ` [PATCH v2 20/20] merge-ort: free data structures in merge_finalize() Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 00/20] fundamentals of merge-ort implementation Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 01/20] merge-ort: setup basic internal data structures Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 02/20] merge-ort: add some high-level algorithm structure Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 03/20] merge-ort: port merge_start() from merge-recursive Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 04/20] merge-ort: use histogram diff Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 05/20] merge-ort: add an err() function similar to one from merge-recursive Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 06/20] merge-ort: implement a very basic collect_merge_info() Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 07/20] merge-ort: avoid repeating fill_tree_descriptor() on the same tree Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 08/20] merge-ort: compute a few more useful fields for collect_merge_info Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 09/20] merge-ort: record stage and auxiliary info for every path Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 10/20] merge-ort: avoid recursing into identical trees Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 11/20] merge-ort: add a preliminary simple process_entries() implementation Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 12/20] merge-ort: have process_entries operate in a defined order Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 13/20] merge-ort: step 1 of tree writing -- record basenames, modes, and oids Elijah Newren via GitGitGadget 2020-12-13 8:04 ` Elijah Newren via GitGitGadget [this message] 2020-12-13 8:04 ` [PATCH v3 15/20] merge-ort: step 3 of tree writing -- handling subdirectories as we go Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 16/20] merge-ort: basic outline for merge_switch_to_result() Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 17/20] merge-ort: add implementation of checkout() Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 18/20] tree: enable cmp_cache_name_compare() to be used elsewhere Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 19/20] merge-ort: add implementation of record_conflicted_index_entries() Elijah Newren via GitGitGadget 2020-12-13 8:04 ` [PATCH v3 20/20] merge-ort: free data structures in merge_finalize() Elijah Newren via GitGitGadget 2020-12-14 14:24 ` [PATCH v3 00/20] fundamentals of merge-ort implementation Felipe Contreras 2020-12-14 16:24 ` Elijah Newren
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