diff options
Diffstat (limited to 'refs.c')
| -rw-r--r-- | refs.c | 250 |
1 files changed, 137 insertions, 113 deletions
@@ -1622,6 +1622,7 @@ int peel_ref(const char *refname, unsigned char *sha1) struct warn_if_dangling_data { FILE *fp; const char *refname; + const struct string_list *refnames; const char *msg_fmt; }; @@ -1636,8 +1637,12 @@ static int warn_if_dangling_symref(const char *refname, const unsigned char *sha return 0; resolves_to = resolve_ref_unsafe(refname, junk, 0, NULL); - if (!resolves_to || strcmp(resolves_to, d->refname)) + if (!resolves_to + || (d->refname + ? strcmp(resolves_to, d->refname) + : !string_list_has_string(d->refnames, resolves_to))) { return 0; + } fprintf(d->fp, d->msg_fmt, refname); fputc('\n', d->fp); @@ -1650,6 +1655,18 @@ void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) data.fp = fp; data.refname = refname; + data.refnames = NULL; + data.msg_fmt = msg_fmt; + for_each_rawref(warn_if_dangling_symref, &data); +} + +void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) +{ + struct warn_if_dangling_data data; + + data.fp = fp; + data.refname = NULL; + data.refnames = refnames; data.msg_fmt = msg_fmt; for_each_rawref(warn_if_dangling_symref, &data); } @@ -2010,7 +2027,6 @@ int dwim_log(const char *str, int len, unsigned char *sha1, char **log) *log = NULL; for (p = ref_rev_parse_rules; *p; p++) { - struct stat st; unsigned char hash[20]; char path[PATH_MAX]; const char *ref, *it; @@ -2019,12 +2035,9 @@ int dwim_log(const char *str, int len, unsigned char *sha1, char **log) ref = resolve_ref_unsafe(path, hash, 1, NULL); if (!ref) continue; - if (!stat(git_path("logs/%s", path), &st) && - S_ISREG(st.st_mode)) + if (reflog_exists(path)) it = path; - else if (strcmp(ref, path) && - !stat(git_path("logs/%s", ref), &st) && - S_ISREG(st.st_mode)) + else if (strcmp(ref, path) && reflog_exists(ref)) it = ref; else continue; @@ -2442,7 +2455,7 @@ static int curate_packed_ref_fn(struct ref_entry *entry, void *cb_data) return 0; } -static int repack_without_refs(const char **refnames, int n) +int repack_without_refs(const char **refnames, int n) { struct ref_dir *packed; struct string_list refs_to_delete = STRING_LIST_INIT_DUP; @@ -2941,122 +2954,133 @@ int create_symref(const char *ref_target, const char *refs_heads_master, return 0; } -static char *ref_msg(const char *line, const char *endp) -{ - const char *ep; - line += 82; - ep = memchr(line, '\n', endp - line); - if (!ep) - ep = endp; - return xmemdupz(line, ep - line); +struct read_ref_at_cb { + const char *refname; + unsigned long at_time; + int cnt; + int reccnt; + unsigned char *sha1; + int found_it; + + unsigned char osha1[20]; + unsigned char nsha1[20]; + int tz; + unsigned long date; + char **msg; + unsigned long *cutoff_time; + int *cutoff_tz; + int *cutoff_cnt; +}; + +static int read_ref_at_ent(unsigned char *osha1, unsigned char *nsha1, + const char *email, unsigned long timestamp, int tz, + const char *message, void *cb_data) +{ + struct read_ref_at_cb *cb = cb_data; + + cb->reccnt++; + cb->tz = tz; + cb->date = timestamp; + + if (timestamp <= cb->at_time || cb->cnt == 0) { + if (cb->msg) + *cb->msg = xstrdup(message); + if (cb->cutoff_time) + *cb->cutoff_time = timestamp; + if (cb->cutoff_tz) + *cb->cutoff_tz = tz; + if (cb->cutoff_cnt) + *cb->cutoff_cnt = cb->reccnt - 1; + /* + * we have not yet updated cb->[n|o]sha1 so they still + * hold the values for the previous record. + */ + if (!is_null_sha1(cb->osha1)) { + hashcpy(cb->sha1, nsha1); + if (hashcmp(cb->osha1, nsha1)) + warning("Log for ref %s has gap after %s.", + cb->refname, show_date(cb->date, cb->tz, DATE_RFC2822)); + } + else if (cb->date == cb->at_time) + hashcpy(cb->sha1, nsha1); + else if (hashcmp(nsha1, cb->sha1)) + warning("Log for ref %s unexpectedly ended on %s.", + cb->refname, show_date(cb->date, cb->tz, + DATE_RFC2822)); + hashcpy(cb->osha1, osha1); + hashcpy(cb->nsha1, nsha1); + cb->found_it = 1; + return 1; + } + hashcpy(cb->osha1, osha1); + hashcpy(cb->nsha1, nsha1); + if (cb->cnt > 0) + cb->cnt--; + return 0; +} + +static int read_ref_at_ent_oldest(unsigned char *osha1, unsigned char *nsha1, + const char *email, unsigned long timestamp, + int tz, const char *message, void *cb_data) +{ + struct read_ref_at_cb *cb = cb_data; + + if (cb->msg) + *cb->msg = xstrdup(message); + if (cb->cutoff_time) + *cb->cutoff_time = timestamp; + if (cb->cutoff_tz) + *cb->cutoff_tz = tz; + if (cb->cutoff_cnt) + *cb->cutoff_cnt = cb->reccnt; + hashcpy(cb->sha1, osha1); + if (is_null_sha1(cb->sha1)) + hashcpy(cb->sha1, nsha1); + /* We just want the first entry */ + return 1; } int read_ref_at(const char *refname, unsigned long at_time, int cnt, unsigned char *sha1, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt) { - const char *logfile, *logdata, *logend, *rec, *lastgt, *lastrec; - char *tz_c; - int logfd, tz, reccnt = 0; - struct stat st; - unsigned long date; - unsigned char logged_sha1[20]; - void *log_mapped; - size_t mapsz; + struct read_ref_at_cb cb; - logfile = git_path("logs/%s", refname); - logfd = open(logfile, O_RDONLY, 0); - if (logfd < 0) - die_errno("Unable to read log '%s'", logfile); - fstat(logfd, &st); - if (!st.st_size) - die("Log %s is empty.", logfile); - mapsz = xsize_t(st.st_size); - log_mapped = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, logfd, 0); - logdata = log_mapped; - close(logfd); + memset(&cb, 0, sizeof(cb)); + cb.refname = refname; + cb.at_time = at_time; + cb.cnt = cnt; + cb.msg = msg; + cb.cutoff_time = cutoff_time; + cb.cutoff_tz = cutoff_tz; + cb.cutoff_cnt = cutoff_cnt; + cb.sha1 = sha1; + + for_each_reflog_ent_reverse(refname, read_ref_at_ent, &cb); + + if (!cb.reccnt) + die("Log for %s is empty.", refname); + if (cb.found_it) + return 0; + + for_each_reflog_ent(refname, read_ref_at_ent_oldest, &cb); - lastrec = NULL; - rec = logend = logdata + st.st_size; - while (logdata < rec) { - reccnt++; - if (logdata < rec && *(rec-1) == '\n') - rec--; - lastgt = NULL; - while (logdata < rec && *(rec-1) != '\n') { - rec--; - if (*rec == '>') - lastgt = rec; - } - if (!lastgt) - die("Log %s is corrupt.", logfile); - date = strtoul(lastgt + 1, &tz_c, 10); - if (date <= at_time || cnt == 0) { - tz = strtoul(tz_c, NULL, 10); - if (msg) - *msg = ref_msg(rec, logend); - if (cutoff_time) - *cutoff_time = date; - if (cutoff_tz) - *cutoff_tz = tz; - if (cutoff_cnt) - *cutoff_cnt = reccnt - 1; - if (lastrec) { - if (get_sha1_hex(lastrec, logged_sha1)) - die("Log %s is corrupt.", logfile); - if (get_sha1_hex(rec + 41, sha1)) - die("Log %s is corrupt.", logfile); - if (hashcmp(logged_sha1, sha1)) { - warning("Log %s has gap after %s.", - logfile, show_date(date, tz, DATE_RFC2822)); - } - } - else if (date == at_time) { - if (get_sha1_hex(rec + 41, sha1)) - die("Log %s is corrupt.", logfile); - } - else { - if (get_sha1_hex(rec + 41, logged_sha1)) - die("Log %s is corrupt.", logfile); - if (hashcmp(logged_sha1, sha1)) { - warning("Log %s unexpectedly ended on %s.", - logfile, show_date(date, tz, DATE_RFC2822)); - } - } - munmap(log_mapped, mapsz); - return 0; - } - lastrec = rec; - if (cnt > 0) - cnt--; - } - - rec = logdata; - while (rec < logend && *rec != '>' && *rec != '\n') - rec++; - if (rec == logend || *rec == '\n') - die("Log %s is corrupt.", logfile); - date = strtoul(rec + 1, &tz_c, 10); - tz = strtoul(tz_c, NULL, 10); - if (get_sha1_hex(logdata, sha1)) - die("Log %s is corrupt.", logfile); - if (is_null_sha1(sha1)) { - if (get_sha1_hex(logdata + 41, sha1)) - die("Log %s is corrupt.", logfile); - } - if (msg) - *msg = ref_msg(logdata, logend); - munmap(log_mapped, mapsz); - - if (cutoff_time) - *cutoff_time = date; - if (cutoff_tz) - *cutoff_tz = tz; - if (cutoff_cnt) - *cutoff_cnt = reccnt; return 1; } +int reflog_exists(const char *refname) +{ + struct stat st; + + return !lstat(git_path("logs/%s", refname), &st) && + S_ISREG(st.st_mode); +} + +int delete_reflog(const char *refname) +{ + return remove_path(git_path("logs/%s", refname)); +} + static int show_one_reflog_ent(struct strbuf *sb, each_reflog_ent_fn fn, void *cb_data) { unsigned char osha1[20], nsha1[20]; |