mirror of
https://github.com/git/git.git
synced 2024-10-31 14:27:54 +01:00
a12cbe23ef
When we originally did the series that contains 7ba826290a
(revision: add rev_input_given flag, 2017-08-02) the intent
was that "git rev-list --stdin </dev/null" would similarly
become a successful noop. However, an attempt at the time to
do that did not work[1]. The problem is that rev_input_given
serves two roles:
- it tells rev-list.c that it should not error out
- it tells revision.c that it should not have the "default"
ref kick (e.g., "HEAD" in "git log")
We want to trigger the former, but not the latter. This is
technically possible with a single flag, if we set the flag
only after revision.c's revs->def check. But this introduces
a rather subtle ordering dependency.
Instead, let's keep two flags: one to denote when we got
actual input (which triggers both roles) and one for when we
read stdin (which triggers only the first).
This does mean a caller interested in the first role has to
check both flags, but there's only one such caller. And any
future callers might want to make the distinction anyway
(e.g., if they care less about erroring out, and more about
whether revision.c soaked up our stdin).
In fact, we already keep such a flag internally in
revision.c for this purpose, so this is really just exposing
that to the caller (and the old function-local flag can go
away in favor of our new one).
[1] https://public-inbox.org/git/20170802223416.gwiezhbuxbdmbjzx@sigill.intra.peff.net/
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
593 lines
15 KiB
C
593 lines
15 KiB
C
#include "cache.h"
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#include "config.h"
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#include "commit.h"
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#include "diff.h"
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#include "revision.h"
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#include "list-objects.h"
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#include "list-objects-filter.h"
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#include "list-objects-filter-options.h"
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#include "object-store.h"
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#include "pack.h"
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#include "pack-bitmap.h"
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#include "builtin.h"
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#include "log-tree.h"
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#include "graph.h"
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#include "bisect.h"
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#include "progress.h"
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#include "reflog-walk.h"
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#include "oidset.h"
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#include "packfile.h"
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#include "object-store.h"
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static const char rev_list_usage[] =
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"git rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
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" limiting output:\n"
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" --max-count=<n>\n"
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" --max-age=<epoch>\n"
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" --min-age=<epoch>\n"
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" --sparse\n"
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" --no-merges\n"
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" --min-parents=<n>\n"
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" --no-min-parents\n"
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" --max-parents=<n>\n"
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" --no-max-parents\n"
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" --remove-empty\n"
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" --all\n"
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" --branches\n"
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" --tags\n"
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" --remotes\n"
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" --stdin\n"
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" --quiet\n"
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" ordering output:\n"
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" --topo-order\n"
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" --date-order\n"
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" --reverse\n"
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" formatting output:\n"
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" --parents\n"
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" --children\n"
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" --objects | --objects-edge\n"
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" --unpacked\n"
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" --header | --pretty\n"
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" --abbrev=<n> | --no-abbrev\n"
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" --abbrev-commit\n"
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" --left-right\n"
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" --count\n"
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" special purpose:\n"
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" --bisect\n"
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" --bisect-vars\n"
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" --bisect-all"
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;
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static struct progress *progress;
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static unsigned progress_counter;
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static struct list_objects_filter_options filter_options;
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static struct oidset omitted_objects;
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static int arg_print_omitted; /* print objects omitted by filter */
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static struct oidset missing_objects;
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enum missing_action {
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MA_ERROR = 0, /* fail if any missing objects are encountered */
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MA_ALLOW_ANY, /* silently allow ALL missing objects */
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MA_PRINT, /* print ALL missing objects in special section */
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MA_ALLOW_PROMISOR, /* silently allow all missing PROMISOR objects */
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};
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static enum missing_action arg_missing_action;
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#define DEFAULT_OIDSET_SIZE (16*1024)
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static void finish_commit(struct commit *commit, void *data);
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static void show_commit(struct commit *commit, void *data)
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{
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struct rev_list_info *info = data;
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struct rev_info *revs = info->revs;
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display_progress(progress, ++progress_counter);
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if (info->flags & REV_LIST_QUIET) {
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finish_commit(commit, data);
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return;
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}
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graph_show_commit(revs->graph);
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if (revs->count) {
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if (commit->object.flags & PATCHSAME)
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revs->count_same++;
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else if (commit->object.flags & SYMMETRIC_LEFT)
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revs->count_left++;
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else
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revs->count_right++;
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finish_commit(commit, data);
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return;
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}
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if (info->show_timestamp)
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printf("%"PRItime" ", commit->date);
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if (info->header_prefix)
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fputs(info->header_prefix, stdout);
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if (!revs->graph)
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fputs(get_revision_mark(revs, commit), stdout);
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if (revs->abbrev_commit && revs->abbrev)
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fputs(find_unique_abbrev(&commit->object.oid, revs->abbrev),
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stdout);
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else
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fputs(oid_to_hex(&commit->object.oid), stdout);
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if (revs->print_parents) {
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struct commit_list *parents = commit->parents;
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while (parents) {
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printf(" %s", oid_to_hex(&parents->item->object.oid));
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parents = parents->next;
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}
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}
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if (revs->children.name) {
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struct commit_list *children;
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children = lookup_decoration(&revs->children, &commit->object);
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while (children) {
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printf(" %s", oid_to_hex(&children->item->object.oid));
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children = children->next;
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}
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}
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show_decorations(revs, commit);
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if (revs->commit_format == CMIT_FMT_ONELINE)
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putchar(' ');
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else
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putchar('\n');
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if (revs->verbose_header) {
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struct strbuf buf = STRBUF_INIT;
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struct pretty_print_context ctx = {0};
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ctx.abbrev = revs->abbrev;
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ctx.date_mode = revs->date_mode;
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ctx.date_mode_explicit = revs->date_mode_explicit;
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ctx.fmt = revs->commit_format;
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ctx.output_encoding = get_log_output_encoding();
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ctx.color = revs->diffopt.use_color;
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pretty_print_commit(&ctx, commit, &buf);
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if (buf.len) {
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if (revs->commit_format != CMIT_FMT_ONELINE)
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graph_show_oneline(revs->graph);
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graph_show_commit_msg(revs->graph, stdout, &buf);
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/*
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* Add a newline after the commit message.
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*
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* Usually, this newline produces a blank
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* padding line between entries, in which case
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* we need to add graph padding on this line.
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*
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* However, the commit message may not end in a
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* newline. In this case the newline simply
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* ends the last line of the commit message,
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* and we don't need any graph output. (This
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* always happens with CMIT_FMT_ONELINE, and it
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* happens with CMIT_FMT_USERFORMAT when the
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* format doesn't explicitly end in a newline.)
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*/
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if (buf.len && buf.buf[buf.len - 1] == '\n')
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graph_show_padding(revs->graph);
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putchar(info->hdr_termination);
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} else {
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/*
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* If the message buffer is empty, just show
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* the rest of the graph output for this
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* commit.
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*/
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if (graph_show_remainder(revs->graph))
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putchar('\n');
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if (revs->commit_format == CMIT_FMT_ONELINE)
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putchar('\n');
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}
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strbuf_release(&buf);
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} else {
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if (graph_show_remainder(revs->graph))
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putchar('\n');
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}
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maybe_flush_or_die(stdout, "stdout");
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finish_commit(commit, data);
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}
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static void finish_commit(struct commit *commit, void *data)
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{
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if (commit->parents) {
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free_commit_list(commit->parents);
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commit->parents = NULL;
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}
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free_commit_buffer(commit);
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}
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static inline void finish_object__ma(struct object *obj)
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{
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/*
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* Whether or not we try to dynamically fetch missing objects
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* from the server, we currently DO NOT have the object. We
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* can either print, allow (ignore), or conditionally allow
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* (ignore) them.
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*/
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switch (arg_missing_action) {
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case MA_ERROR:
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die("missing blob object '%s'", oid_to_hex(&obj->oid));
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return;
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case MA_ALLOW_ANY:
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return;
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case MA_PRINT:
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oidset_insert(&missing_objects, &obj->oid);
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return;
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case MA_ALLOW_PROMISOR:
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if (is_promisor_object(&obj->oid))
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return;
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die("unexpected missing blob object '%s'",
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oid_to_hex(&obj->oid));
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return;
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default:
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BUG("unhandled missing_action");
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return;
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}
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}
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static int finish_object(struct object *obj, const char *name, void *cb_data)
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{
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struct rev_list_info *info = cb_data;
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if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid)) {
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finish_object__ma(obj);
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return 1;
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}
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if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
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parse_object(&obj->oid);
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return 0;
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}
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static void show_object(struct object *obj, const char *name, void *cb_data)
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{
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struct rev_list_info *info = cb_data;
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if (finish_object(obj, name, cb_data))
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return;
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display_progress(progress, ++progress_counter);
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if (info->flags & REV_LIST_QUIET)
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return;
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show_object_with_name(stdout, obj, name);
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}
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static void show_edge(struct commit *commit)
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{
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printf("-%s\n", oid_to_hex(&commit->object.oid));
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}
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static void print_var_str(const char *var, const char *val)
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{
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printf("%s='%s'\n", var, val);
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}
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static void print_var_int(const char *var, int val)
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{
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printf("%s=%d\n", var, val);
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}
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static int show_bisect_vars(struct rev_list_info *info, int reaches, int all)
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{
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int cnt, flags = info->flags;
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char hex[GIT_MAX_HEXSZ + 1] = "";
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struct commit_list *tried;
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struct rev_info *revs = info->revs;
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if (!revs->commits)
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return 1;
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revs->commits = filter_skipped(revs->commits, &tried,
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flags & BISECT_SHOW_ALL,
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NULL, NULL);
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/*
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* revs->commits can reach "reaches" commits among
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* "all" commits. If it is good, then there are
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* (all-reaches) commits left to be bisected.
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* On the other hand, if it is bad, then the set
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* to bisect is "reaches".
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* A bisect set of size N has (N-1) commits further
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* to test, as we already know one bad one.
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*/
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cnt = all - reaches;
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if (cnt < reaches)
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cnt = reaches;
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if (revs->commits)
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oid_to_hex_r(hex, &revs->commits->item->object.oid);
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if (flags & BISECT_SHOW_ALL) {
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traverse_commit_list(revs, show_commit, show_object, info);
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printf("------\n");
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}
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print_var_str("bisect_rev", hex);
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print_var_int("bisect_nr", cnt - 1);
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print_var_int("bisect_good", all - reaches - 1);
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print_var_int("bisect_bad", reaches - 1);
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print_var_int("bisect_all", all);
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print_var_int("bisect_steps", estimate_bisect_steps(all));
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return 0;
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}
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static int show_object_fast(
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const struct object_id *oid,
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enum object_type type,
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int exclude,
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uint32_t name_hash,
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struct packed_git *found_pack,
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off_t found_offset)
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{
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fprintf(stdout, "%s\n", oid_to_hex(oid));
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return 1;
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}
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static inline int parse_missing_action_value(const char *value)
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{
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if (!strcmp(value, "error")) {
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arg_missing_action = MA_ERROR;
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return 1;
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}
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if (!strcmp(value, "allow-any")) {
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arg_missing_action = MA_ALLOW_ANY;
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fetch_if_missing = 0;
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return 1;
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}
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if (!strcmp(value, "print")) {
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arg_missing_action = MA_PRINT;
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fetch_if_missing = 0;
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return 1;
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}
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if (!strcmp(value, "allow-promisor")) {
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arg_missing_action = MA_ALLOW_PROMISOR;
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fetch_if_missing = 0;
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return 1;
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}
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return 0;
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}
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int cmd_rev_list(int argc, const char **argv, const char *prefix)
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{
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struct rev_info revs;
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struct rev_list_info info;
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int i;
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int bisect_list = 0;
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int bisect_show_vars = 0;
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int bisect_find_all = 0;
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int use_bitmap_index = 0;
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const char *show_progress = NULL;
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if (argc == 2 && !strcmp(argv[1], "-h"))
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usage(rev_list_usage);
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git_config(git_default_config, NULL);
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init_revisions(&revs, prefix);
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revs.abbrev = DEFAULT_ABBREV;
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revs.commit_format = CMIT_FMT_UNSPECIFIED;
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/*
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* Scan the argument list before invoking setup_revisions(), so that we
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* know if fetch_if_missing needs to be set to 0.
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*
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* "--exclude-promisor-objects" acts as a pre-filter on missing objects
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* by not crossing the boundary from realized objects to promisor
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* objects.
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*
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* Let "--missing" to conditionally set fetch_if_missing.
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*/
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--exclude-promisor-objects")) {
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fetch_if_missing = 0;
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revs.exclude_promisor_objects = 1;
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break;
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}
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}
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (skip_prefix(arg, "--missing=", &arg)) {
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if (revs.exclude_promisor_objects)
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die(_("cannot combine --exclude-promisor-objects and --missing"));
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if (parse_missing_action_value(arg))
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break;
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}
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}
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argc = setup_revisions(argc, argv, &revs, NULL);
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memset(&info, 0, sizeof(info));
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info.revs = &revs;
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if (revs.bisect)
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bisect_list = 1;
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if (revs.diffopt.flags.quick)
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info.flags |= REV_LIST_QUIET;
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for (i = 1 ; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--header")) {
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revs.verbose_header = 1;
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continue;
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}
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if (!strcmp(arg, "--timestamp")) {
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info.show_timestamp = 1;
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continue;
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}
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if (!strcmp(arg, "--bisect")) {
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bisect_list = 1;
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continue;
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}
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if (!strcmp(arg, "--bisect-all")) {
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bisect_list = 1;
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bisect_find_all = 1;
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info.flags |= BISECT_SHOW_ALL;
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revs.show_decorations = 1;
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continue;
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}
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if (!strcmp(arg, "--bisect-vars")) {
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bisect_list = 1;
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bisect_show_vars = 1;
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continue;
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}
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if (!strcmp(arg, "--use-bitmap-index")) {
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use_bitmap_index = 1;
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continue;
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}
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if (!strcmp(arg, "--test-bitmap")) {
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test_bitmap_walk(&revs);
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return 0;
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}
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if (skip_prefix(arg, "--progress=", &arg)) {
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show_progress = arg;
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continue;
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}
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if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
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parse_list_objects_filter(&filter_options, arg);
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if (filter_options.choice && !revs.blob_objects)
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die(_("object filtering requires --objects"));
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if (filter_options.choice == LOFC_SPARSE_OID &&
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!filter_options.sparse_oid_value)
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die(_("invalid sparse value '%s'"),
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filter_options.filter_spec);
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continue;
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}
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if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
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list_objects_filter_set_no_filter(&filter_options);
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continue;
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}
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if (!strcmp(arg, "--filter-print-omitted")) {
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arg_print_omitted = 1;
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continue;
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}
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if (!strcmp(arg, "--exclude-promisor-objects"))
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continue; /* already handled above */
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if (skip_prefix(arg, "--missing=", &arg))
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continue; /* already handled above */
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usage(rev_list_usage);
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}
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if (revs.commit_format != CMIT_FMT_UNSPECIFIED) {
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/* The command line has a --pretty */
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info.hdr_termination = '\n';
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if (revs.commit_format == CMIT_FMT_ONELINE)
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info.header_prefix = "";
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else
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info.header_prefix = "commit ";
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}
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else if (revs.verbose_header)
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/* Only --header was specified */
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revs.commit_format = CMIT_FMT_RAW;
|
|
|
|
if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
|
|
(!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
|
|
!revs.pending.nr) &&
|
|
!revs.rev_input_given && !revs.read_from_stdin) ||
|
|
revs.diff)
|
|
usage(rev_list_usage);
|
|
|
|
if (revs.show_notes)
|
|
die(_("rev-list does not support display of notes"));
|
|
|
|
if (filter_options.choice && use_bitmap_index)
|
|
die(_("cannot combine --use-bitmap-index with object filtering"));
|
|
|
|
save_commit_buffer = (revs.verbose_header ||
|
|
revs.grep_filter.pattern_list ||
|
|
revs.grep_filter.header_list);
|
|
if (bisect_list)
|
|
revs.limited = 1;
|
|
|
|
if (show_progress)
|
|
progress = start_delayed_progress(show_progress, 0);
|
|
|
|
if (use_bitmap_index && !revs.prune) {
|
|
if (revs.count && !revs.left_right && !revs.cherry_mark) {
|
|
uint32_t commit_count;
|
|
int max_count = revs.max_count;
|
|
struct bitmap_index *bitmap_git;
|
|
if ((bitmap_git = prepare_bitmap_walk(&revs))) {
|
|
count_bitmap_commit_list(bitmap_git, &commit_count, NULL, NULL, NULL);
|
|
if (max_count >= 0 && max_count < commit_count)
|
|
commit_count = max_count;
|
|
printf("%d\n", commit_count);
|
|
free_bitmap_index(bitmap_git);
|
|
return 0;
|
|
}
|
|
} else if (revs.max_count < 0 &&
|
|
revs.tag_objects && revs.tree_objects && revs.blob_objects) {
|
|
struct bitmap_index *bitmap_git;
|
|
if ((bitmap_git = prepare_bitmap_walk(&revs))) {
|
|
traverse_bitmap_commit_list(bitmap_git, &show_object_fast);
|
|
free_bitmap_index(bitmap_git);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (prepare_revision_walk(&revs))
|
|
die("revision walk setup failed");
|
|
if (revs.tree_objects)
|
|
mark_edges_uninteresting(&revs, show_edge);
|
|
|
|
if (bisect_list) {
|
|
int reaches, all;
|
|
|
|
find_bisection(&revs.commits, &reaches, &all, bisect_find_all);
|
|
|
|
if (bisect_show_vars)
|
|
return show_bisect_vars(&info, reaches, all);
|
|
}
|
|
|
|
if (arg_print_omitted)
|
|
oidset_init(&omitted_objects, DEFAULT_OIDSET_SIZE);
|
|
if (arg_missing_action == MA_PRINT)
|
|
oidset_init(&missing_objects, DEFAULT_OIDSET_SIZE);
|
|
|
|
traverse_commit_list_filtered(
|
|
&filter_options, &revs, show_commit, show_object, &info,
|
|
(arg_print_omitted ? &omitted_objects : NULL));
|
|
|
|
if (arg_print_omitted) {
|
|
struct oidset_iter iter;
|
|
struct object_id *oid;
|
|
oidset_iter_init(&omitted_objects, &iter);
|
|
while ((oid = oidset_iter_next(&iter)))
|
|
printf("~%s\n", oid_to_hex(oid));
|
|
oidset_clear(&omitted_objects);
|
|
}
|
|
if (arg_missing_action == MA_PRINT) {
|
|
struct oidset_iter iter;
|
|
struct object_id *oid;
|
|
oidset_iter_init(&missing_objects, &iter);
|
|
while ((oid = oidset_iter_next(&iter)))
|
|
printf("?%s\n", oid_to_hex(oid));
|
|
oidset_clear(&missing_objects);
|
|
}
|
|
|
|
stop_progress(&progress);
|
|
|
|
if (revs.count) {
|
|
if (revs.left_right && revs.cherry_mark)
|
|
printf("%d\t%d\t%d\n", revs.count_left, revs.count_right, revs.count_same);
|
|
else if (revs.left_right)
|
|
printf("%d\t%d\n", revs.count_left, revs.count_right);
|
|
else if (revs.cherry_mark)
|
|
printf("%d\t%d\n", revs.count_left + revs.count_right, revs.count_same);
|
|
else
|
|
printf("%d\n", revs.count_left + revs.count_right);
|
|
}
|
|
|
|
return 0;
|
|
}
|