commit-graph: implement git-commit-graph write

diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index d5345b6a2e237b550e5cee69e6d46ff8271ade22..d320b6f1e3bcbcd429d5e2baa94b453035572db7 100644 (file)
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c
@@ -15,6 +15,7 @@
 #include "progress.h"
 #include "reflog-walk.h"
 #include "oidset.h"
+#include "packfile.h"
 
 static const char rev_list_usage[] =
 "git rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
@@ -67,6 +68,7 @@ enum missing_action {
        MA_ERROR = 0,    /* fail if any missing objects are encountered */
        MA_ALLOW_ANY,    /* silently allow ALL missing objects */
        MA_PRINT,        /* print ALL missing objects in special section */
+       MA_ALLOW_PROMISOR, /* silently allow all missing PROMISOR objects */
 };
 static enum missing_action arg_missing_action;
 
@@ -132,7 +134,7 @@ static void show_commit(struct commit *commit, void *data)
        else
                putchar('\n');
 
-       if (revs->verbose_header && get_cached_commit_buffer(commit, NULL)) {
+       if (revs->verbose_header) {
                struct strbuf buf = STRBUF_INIT;
                struct pretty_print_context ctx = {0};
                ctx.abbrev = revs->abbrev;
@@ -197,6 +199,12 @@ static void finish_commit(struct commit *commit, void *data)
 
 static inline void finish_object__ma(struct object *obj)
 {
+       /*
+        * Whether or not we try to dynamically fetch missing objects
+        * from the server, we currently DO NOT have the object.  We
+        * can either print, allow (ignore), or conditionally allow
+        * (ignore) them.
+        */
        switch (arg_missing_action) {
        case MA_ERROR:
                die("missing blob object '%s'", oid_to_hex(&obj->oid));
@@ -209,25 +217,36 @@ static inline void finish_object__ma(struct object *obj)
                oidset_insert(&missing_objects, &obj->oid);
                return;
 
+       case MA_ALLOW_PROMISOR:
+               if (is_promisor_object(&obj->oid))
+                       return;
+               die("unexpected missing blob object '%s'",
+                   oid_to_hex(&obj->oid));
+               return;
+
        default:
                BUG("unhandled missing_action");
                return;
        }
 }
 
-static void finish_object(struct object *obj, const char *name, void *cb_data)
+static int finish_object(struct object *obj, const char *name, void *cb_data)
 {
        struct rev_list_info *info = cb_data;
-       if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid))
+       if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid)) {
                finish_object__ma(obj);
+               return 1;
+       }
        if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
                parse_object(&obj->oid);
+       return 0;
 }
 
 static void show_object(struct object *obj, const char *name, void *cb_data)
 {
        struct rev_list_info *info = cb_data;
-       finish_object(obj, name, cb_data);
+       if (finish_object(obj, name, cb_data))
+               return;
        display_progress(progress, ++progress_counter);
        if (info->flags & REV_LIST_QUIET)
                return;
@@ -315,11 +334,19 @@ static inline int parse_missing_action_value(const char *value)
 
        if (!strcmp(value, "allow-any")) {
                arg_missing_action = MA_ALLOW_ANY;
+               fetch_if_missing = 0;
                return 1;
        }
 
        if (!strcmp(value, "print")) {
                arg_missing_action = MA_PRINT;
+               fetch_if_missing = 0;
+               return 1;
+       }
+
+       if (!strcmp(value, "allow-promisor")) {
+               arg_missing_action = MA_ALLOW_PROMISOR;
+               fetch_if_missing = 0;
                return 1;
        }
 
@@ -344,6 +371,35 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
        init_revisions(&revs, prefix);
        revs.abbrev = DEFAULT_ABBREV;
        revs.commit_format = CMIT_FMT_UNSPECIFIED;
+
+       /*
+        * Scan the argument list before invoking setup_revisions(), so that we
+        * know if fetch_if_missing needs to be set to 0.
+        *
+        * "--exclude-promisor-objects" acts as a pre-filter on missing objects
+        * by not crossing the boundary from realized objects to promisor
+        * objects.
+        *
+        * Let "--missing" to conditionally set fetch_if_missing.
+        */
+       for (i = 1; i < argc; i++) {
+               const char *arg = argv[i];
+               if (!strcmp(arg, "--exclude-promisor-objects")) {
+                       fetch_if_missing = 0;
+                       revs.exclude_promisor_objects = 1;
+                       break;
+               }
+       }
+       for (i = 1; i < argc; i++) {
+               const char *arg = argv[i];
+               if (skip_prefix(arg, "--missing=", &arg)) {
+                       if (revs.exclude_promisor_objects)
+                               die(_("cannot combine --exclude-promisor-objects and --missing"));
+                       if (parse_missing_action_value(arg))
+                               break;
+               }
+       }
+
        argc = setup_revisions(argc, argv, &revs, NULL);
 
        memset(&info, 0, sizeof(info));
@@ -404,7 +460,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
                        continue;
                }
                if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
-                       list_objects_filter_release(&filter_options);
+                       list_objects_filter_set_no_filter(&filter_options);
                        continue;
                }
                if (!strcmp(arg, "--filter-print-omitted")) {
@@ -412,9 +468,10 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
                        continue;
                }
 
-               if (skip_prefix(arg, "--missing=", &arg) &&
-                   parse_missing_action_value(arg))
-                       continue;
+               if (!strcmp(arg, "--exclude-promisor-objects"))
+                       continue; /* already handled above */
+               if (skip_prefix(arg, "--missing=", &arg))
+                       continue; /* already handled above */
 
                usage(rev_list_usage);