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![Jeff King](/assets/img/avatar_default.png)
In the spirit of517fe807d6
(assert NOARG/NONEG behavior of parse-options callbacks, 2018-11-05), let's cover some parse-options callbacks which expect to be used with PARSE_OPT_NONEG but don't explicitly assert that this is the case. These callbacks are all used correctly in the current code, but this will help document their expectations and future-proof the code. As a bonus, it also silences -Wunused-parameters (these were added since the initial sweep of517fe807d6
, and we can't yet turn on -Wunused-parameters to remind people because it has too many existing false positives). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
343 lines
9.5 KiB
C
343 lines
9.5 KiB
C
#include "builtin.h"
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#include "config.h"
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#include "dir.h"
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#include "lockfile.h"
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#include "parse-options.h"
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#include "repository.h"
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#include "commit-graph.h"
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#include "object-store.h"
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#include "progress.h"
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#include "tag.h"
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static char const * const builtin_commit_graph_usage[] = {
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N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
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N_("git commit-graph write [--object-dir <objdir>] [--append] "
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"[--split[=<strategy>]] [--reachable|--stdin-packs|--stdin-commits] "
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"[--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress] "
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"<split options>"),
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NULL
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};
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static const char * const builtin_commit_graph_verify_usage[] = {
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N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
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NULL
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};
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static const char * const builtin_commit_graph_write_usage[] = {
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N_("git commit-graph write [--object-dir <objdir>] [--append] "
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"[--split[=<strategy>]] [--reachable|--stdin-packs|--stdin-commits] "
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"[--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress] "
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"<split options>"),
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NULL
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};
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static struct opts_commit_graph {
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const char *obj_dir;
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int reachable;
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int stdin_packs;
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int stdin_commits;
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int append;
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int split;
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int shallow;
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int progress;
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int enable_changed_paths;
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} opts;
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static struct object_directory *find_odb(struct repository *r,
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const char *obj_dir)
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{
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struct object_directory *odb;
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char *obj_dir_real = real_pathdup(obj_dir, 1);
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struct strbuf odb_path_real = STRBUF_INIT;
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prepare_alt_odb(r);
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for (odb = r->objects->odb; odb; odb = odb->next) {
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strbuf_realpath(&odb_path_real, odb->path, 1);
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if (!strcmp(obj_dir_real, odb_path_real.buf))
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break;
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}
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free(obj_dir_real);
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strbuf_release(&odb_path_real);
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if (!odb)
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die(_("could not find object directory matching %s"), obj_dir);
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return odb;
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}
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static int graph_verify(int argc, const char **argv)
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{
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struct commit_graph *graph = NULL;
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struct object_directory *odb = NULL;
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char *graph_name;
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int open_ok;
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int fd;
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struct stat st;
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int flags = 0;
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static struct option builtin_commit_graph_verify_options[] = {
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OPT_STRING(0, "object-dir", &opts.obj_dir,
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N_("dir"),
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N_("The object directory to store the graph")),
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OPT_BOOL(0, "shallow", &opts.shallow,
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N_("if the commit-graph is split, only verify the tip file")),
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OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
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OPT_END(),
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};
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trace2_cmd_mode("verify");
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opts.progress = isatty(2);
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argc = parse_options(argc, argv, NULL,
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builtin_commit_graph_verify_options,
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builtin_commit_graph_verify_usage, 0);
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if (!opts.obj_dir)
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opts.obj_dir = get_object_directory();
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if (opts.shallow)
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flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
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if (opts.progress)
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flags |= COMMIT_GRAPH_WRITE_PROGRESS;
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odb = find_odb(the_repository, opts.obj_dir);
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graph_name = get_commit_graph_filename(odb);
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open_ok = open_commit_graph(graph_name, &fd, &st);
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if (!open_ok && errno != ENOENT)
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die_errno(_("Could not open commit-graph '%s'"), graph_name);
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FREE_AND_NULL(graph_name);
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if (open_ok)
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graph = load_commit_graph_one_fd_st(the_repository, fd, &st, odb);
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else
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graph = read_commit_graph_one(the_repository, odb);
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/* Return failure if open_ok predicted success */
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if (!graph)
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return !!open_ok;
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UNLEAK(graph);
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return verify_commit_graph(the_repository, graph, flags);
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}
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extern int read_replace_refs;
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static struct commit_graph_opts write_opts;
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static int write_option_parse_split(const struct option *opt, const char *arg,
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int unset)
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{
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enum commit_graph_split_flags *flags = opt->value;
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BUG_ON_OPT_NEG(unset);
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opts.split = 1;
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if (!arg)
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return 0;
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if (!strcmp(arg, "no-merge"))
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*flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED;
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else if (!strcmp(arg, "replace"))
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*flags = COMMIT_GRAPH_SPLIT_REPLACE;
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else
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die(_("unrecognized --split argument, %s"), arg);
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return 0;
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}
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static int read_one_commit(struct oidset *commits, struct progress *progress,
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const char *hash)
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{
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struct object *result;
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struct object_id oid;
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const char *end;
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if (parse_oid_hex(hash, &oid, &end))
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return error(_("unexpected non-hex object ID: %s"), hash);
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result = deref_tag(the_repository, parse_object(the_repository, &oid),
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NULL, 0);
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if (!result)
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return error(_("invalid object: %s"), hash);
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else if (object_as_type(result, OBJ_COMMIT, 1))
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oidset_insert(commits, &result->oid);
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display_progress(progress, oidset_size(commits));
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return 0;
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}
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static int write_option_max_new_filters(const struct option *opt,
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const char *arg,
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int unset)
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{
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int *to = opt->value;
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if (unset)
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*to = -1;
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else {
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const char *s;
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*to = strtol(arg, (char **)&s, 10);
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if (*s)
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return error(_("%s expects a numerical value"),
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optname(opt, opt->flags));
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}
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return 0;
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}
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static int git_commit_graph_write_config(const char *var, const char *value,
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void *cb)
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{
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if (!strcmp(var, "commitgraph.maxnewfilters"))
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write_opts.max_new_filters = git_config_int(var, value);
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/*
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* No need to fall-back to 'git_default_config', since this was already
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* called in 'cmd_commit_graph()'.
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*/
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return 0;
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}
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static int graph_write(int argc, const char **argv)
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{
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struct string_list pack_indexes = STRING_LIST_INIT_NODUP;
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struct strbuf buf = STRBUF_INIT;
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struct oidset commits = OIDSET_INIT;
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struct object_directory *odb = NULL;
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int result = 0;
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enum commit_graph_write_flags flags = 0;
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struct progress *progress = NULL;
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static struct option builtin_commit_graph_write_options[] = {
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OPT_STRING(0, "object-dir", &opts.obj_dir,
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N_("dir"),
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N_("The object directory to store the graph")),
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OPT_BOOL(0, "reachable", &opts.reachable,
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N_("start walk at all refs")),
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OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
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N_("scan pack-indexes listed by stdin for commits")),
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OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
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N_("start walk at commits listed by stdin")),
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OPT_BOOL(0, "append", &opts.append,
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N_("include all commits already in the commit-graph file")),
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OPT_BOOL(0, "changed-paths", &opts.enable_changed_paths,
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N_("enable computation for changed paths")),
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OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
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OPT_CALLBACK_F(0, "split", &write_opts.split_flags, NULL,
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N_("allow writing an incremental commit-graph file"),
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PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
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write_option_parse_split),
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OPT_INTEGER(0, "max-commits", &write_opts.max_commits,
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N_("maximum number of commits in a non-base split commit-graph")),
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OPT_INTEGER(0, "size-multiple", &write_opts.size_multiple,
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N_("maximum ratio between two levels of a split commit-graph")),
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OPT_EXPIRY_DATE(0, "expire-time", &write_opts.expire_time,
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N_("only expire files older than a given date-time")),
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OPT_CALLBACK_F(0, "max-new-filters", &write_opts.max_new_filters,
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NULL, N_("maximum number of changed-path Bloom filters to compute"),
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0, write_option_max_new_filters),
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OPT_END(),
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};
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opts.progress = isatty(2);
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opts.enable_changed_paths = -1;
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write_opts.size_multiple = 2;
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write_opts.max_commits = 0;
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write_opts.expire_time = 0;
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write_opts.max_new_filters = -1;
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trace2_cmd_mode("write");
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git_config(git_commit_graph_write_config, &opts);
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argc = parse_options(argc, argv, NULL,
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builtin_commit_graph_write_options,
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builtin_commit_graph_write_usage, 0);
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if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
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die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
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if (!opts.obj_dir)
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opts.obj_dir = get_object_directory();
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if (opts.append)
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flags |= COMMIT_GRAPH_WRITE_APPEND;
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if (opts.split)
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flags |= COMMIT_GRAPH_WRITE_SPLIT;
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if (opts.progress)
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flags |= COMMIT_GRAPH_WRITE_PROGRESS;
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if (!opts.enable_changed_paths)
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flags |= COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS;
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if (opts.enable_changed_paths == 1 ||
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git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
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flags |= COMMIT_GRAPH_WRITE_BLOOM_FILTERS;
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read_replace_refs = 0;
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odb = find_odb(the_repository, opts.obj_dir);
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if (opts.reachable) {
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if (write_commit_graph_reachable(odb, flags, &write_opts))
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return 1;
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return 0;
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}
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if (opts.stdin_packs) {
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while (strbuf_getline(&buf, stdin) != EOF)
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string_list_append(&pack_indexes,
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strbuf_detach(&buf, NULL));
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} else if (opts.stdin_commits) {
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oidset_init(&commits, 0);
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if (opts.progress)
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progress = start_delayed_progress(
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_("Collecting commits from input"), 0);
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while (strbuf_getline(&buf, stdin) != EOF) {
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if (read_one_commit(&commits, progress, buf.buf)) {
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result = 1;
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goto cleanup;
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}
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}
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stop_progress(&progress);
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}
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if (write_commit_graph(odb,
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opts.stdin_packs ? &pack_indexes : NULL,
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opts.stdin_commits ? &commits : NULL,
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flags,
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&write_opts))
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result = 1;
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cleanup:
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string_list_clear(&pack_indexes, 0);
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strbuf_release(&buf);
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return result;
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}
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int cmd_commit_graph(int argc, const char **argv, const char *prefix)
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{
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static struct option builtin_commit_graph_options[] = {
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OPT_STRING(0, "object-dir", &opts.obj_dir,
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N_("dir"),
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N_("The object directory to store the graph")),
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OPT_END(),
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};
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if (argc == 2 && !strcmp(argv[1], "-h"))
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usage_with_options(builtin_commit_graph_usage,
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builtin_commit_graph_options);
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git_config(git_default_config, NULL);
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argc = parse_options(argc, argv, prefix,
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builtin_commit_graph_options,
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builtin_commit_graph_usage,
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PARSE_OPT_STOP_AT_NON_OPTION);
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save_commit_buffer = 0;
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if (argc > 0) {
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if (!strcmp(argv[0], "verify"))
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return graph_verify(argc, argv);
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if (!strcmp(argv[0], "write"))
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return graph_write(argc, argv);
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}
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usage_with_options(builtin_commit_graph_usage,
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builtin_commit_graph_options);
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}
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