251 lines
6.1 KiB
C
251 lines
6.1 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "refs.h"
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#include "diff.h"
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#include "revision.h"
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#include "path-list.h"
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#include "reflog-walk.h"
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struct complete_reflogs {
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char *ref;
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struct reflog_info {
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unsigned char osha1[20], nsha1[20];
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char *email;
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unsigned long timestamp;
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int tz;
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char *message;
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} *items;
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int nr, alloc;
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};
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static int read_one_reflog(unsigned char *osha1, unsigned char *nsha1,
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const char *email, unsigned long timestamp, int tz,
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const char *message, void *cb_data)
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{
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struct complete_reflogs *array = cb_data;
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struct reflog_info *item;
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if (array->nr >= array->alloc) {
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array->alloc = alloc_nr(array->nr + 1);
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array->items = xrealloc(array->items, array->alloc *
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sizeof(struct reflog_info));
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}
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item = array->items + array->nr;
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memcpy(item->osha1, osha1, 20);
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memcpy(item->nsha1, nsha1, 20);
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item->email = xstrdup(email);
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item->timestamp = timestamp;
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item->tz = tz;
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item->message = xstrdup(message);
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array->nr++;
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return 0;
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}
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static struct complete_reflogs *read_complete_reflog(const char *ref)
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{
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struct complete_reflogs *reflogs =
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xcalloc(sizeof(struct complete_reflogs), 1);
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reflogs->ref = xstrdup(ref);
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for_each_reflog_ent(ref, read_one_reflog, reflogs);
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if (reflogs->nr == 0) {
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unsigned char sha1[20];
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const char *name = resolve_ref(ref, sha1, 1, NULL);
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if (name)
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for_each_reflog_ent(name, read_one_reflog, reflogs);
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}
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if (reflogs->nr == 0) {
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int len = strlen(ref);
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char *refname = xmalloc(len + 12);
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sprintf(refname, "refs/%s", ref);
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for_each_reflog_ent(refname, read_one_reflog, reflogs);
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if (reflogs->nr == 0) {
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sprintf(refname, "refs/heads/%s", ref);
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for_each_reflog_ent(refname, read_one_reflog, reflogs);
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}
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free(refname);
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}
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return reflogs;
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}
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static int get_reflog_recno_by_time(struct complete_reflogs *array,
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unsigned long timestamp)
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{
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int i;
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for (i = array->nr - 1; i >= 0; i--)
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if (timestamp >= array->items[i].timestamp)
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return i;
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return -1;
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}
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struct commit_info_lifo {
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struct commit_info {
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struct commit *commit;
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void *util;
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} *items;
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int nr, alloc;
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};
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static struct commit_info *get_commit_info(struct commit *commit,
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struct commit_info_lifo *lifo, int pop)
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{
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int i;
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for (i = 0; i < lifo->nr; i++)
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if (lifo->items[i].commit == commit) {
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struct commit_info *result = &lifo->items[i];
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if (pop) {
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if (i + 1 < lifo->nr)
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memmove(lifo->items + i,
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lifo->items + i + 1,
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(lifo->nr - i) *
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sizeof(struct commit_info));
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lifo->nr--;
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}
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return result;
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}
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return NULL;
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}
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static void add_commit_info(struct commit *commit, void *util,
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struct commit_info_lifo *lifo)
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{
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struct commit_info *info;
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if (lifo->nr >= lifo->alloc) {
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lifo->alloc = alloc_nr(lifo->nr + 1);
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lifo->items = xrealloc(lifo->items,
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lifo->alloc * sizeof(struct commit_info));
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}
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info = lifo->items + lifo->nr;
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info->commit = commit;
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info->util = util;
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lifo->nr++;
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}
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struct commit_reflog {
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int flag, recno;
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struct complete_reflogs *reflogs;
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};
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struct reflog_walk_info {
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struct commit_info_lifo reflogs;
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struct path_list complete_reflogs;
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struct commit_reflog *last_commit_reflog;
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};
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void init_reflog_walk(struct reflog_walk_info** info)
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{
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*info = xcalloc(sizeof(struct reflog_walk_info), 1);
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}
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void add_reflog_for_walk(struct reflog_walk_info *info,
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struct commit *commit, const char *name)
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{
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unsigned long timestamp = 0;
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int recno = -1;
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struct path_list_item *item;
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struct complete_reflogs *reflogs;
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char *branch, *at = strchr(name, '@');
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struct commit_reflog *commit_reflog;
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if (commit->object.flags & UNINTERESTING)
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die ("Cannot walk reflogs for %s", name);
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branch = xstrdup(name);
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if (at && at[1] == '{') {
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char *ep;
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branch[at - name] = '\0';
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recno = strtoul(at + 2, &ep, 10);
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if (*ep != '}') {
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recno = -1;
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timestamp = approxidate(at + 2);
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}
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} else
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recno = 0;
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item = path_list_lookup(branch, &info->complete_reflogs);
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if (item)
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reflogs = item->util;
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else {
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reflogs = read_complete_reflog(branch);
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if (!reflogs || reflogs->nr == 0)
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die("No reflogs found for '%s'", branch);
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path_list_insert(branch, &info->complete_reflogs)->util
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= reflogs;
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}
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commit_reflog = xcalloc(sizeof(struct commit_reflog), 1);
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if (recno < 0) {
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commit_reflog->flag = 1;
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commit_reflog->recno = get_reflog_recno_by_time(reflogs, timestamp);
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if (commit_reflog->recno < 0) {
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free(branch);
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free(commit_reflog);
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return;
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}
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} else
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commit_reflog->recno = reflogs->nr - recno - 1;
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commit_reflog->reflogs = reflogs;
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add_commit_info(commit, commit_reflog, &info->reflogs);
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}
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void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit)
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{
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struct commit_info *commit_info =
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get_commit_info(commit, &info->reflogs, 0);
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struct commit_reflog *commit_reflog;
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struct reflog_info *reflog;
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info->last_commit_reflog = NULL;
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if (!commit_info)
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return;
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commit_reflog = commit_info->util;
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if (commit_reflog->recno < 0) {
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commit->parents = NULL;
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return;
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}
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reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
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info->last_commit_reflog = commit_reflog;
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commit_reflog->recno--;
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commit_info->commit = (struct commit *)parse_object(reflog->osha1);
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if (!commit_info->commit) {
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commit->parents = NULL;
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return;
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}
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commit->parents = xcalloc(sizeof(struct commit_list), 1);
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commit->parents->item = commit_info->commit;
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commit->object.flags &= ~(ADDED | SEEN | SHOWN);
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}
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void show_reflog_message(struct reflog_walk_info* info, int oneline)
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{
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if (info && info->last_commit_reflog) {
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struct commit_reflog *commit_reflog = info->last_commit_reflog;
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struct reflog_info *info;
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info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
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if (oneline) {
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printf("%s@{", commit_reflog->reflogs->ref);
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if (commit_reflog->flag)
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printf("%s", show_date(info->timestamp, 0, 1));
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else
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printf("%d", commit_reflog->reflogs->nr
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- 2 - commit_reflog->recno);
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printf("}: ");
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}
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else {
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printf("Reflog: %s@{", commit_reflog->reflogs->ref);
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if (commit_reflog->flag)
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printf("%s", show_rfc2822_date(info->timestamp,
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info->tz));
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else
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printf("%d", commit_reflog->reflogs->nr
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- 2 - commit_reflog->recno);
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printf("} (%s)\nReflog message: %s",
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info->email, info->message);
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}
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}
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}
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