struct sort_node
{
/*
- * the number of children of the associated commit
- * that also occur in the list being sorted.
- */
+ * the number of children of the associated commit
+ * that also occur in the list being sorted.
+ */
unsigned int indegree;
/*
- * reference to original list item that we will re-use
- * on output.
- */
+ * reference to original list item that we will re-use
+ * on output.
+ */
struct commit_list * list_item;
};
const char *commit_type = "commit";
+struct cmt_fmt_map {
+ const char *n;
+ size_t cmp_len;
+ enum cmit_fmt v;
+} cmt_fmts[] = {
+ { "raw", 1, CMIT_FMT_RAW },
+ { "medium", 1, CMIT_FMT_MEDIUM },
+ { "short", 1, CMIT_FMT_SHORT },
+ { "email", 1, CMIT_FMT_EMAIL },
+ { "full", 5, CMIT_FMT_FULL },
+ { "fuller", 5, CMIT_FMT_FULLER },
+ { "oneline", 1, CMIT_FMT_ONELINE },
+};
+
enum cmit_fmt get_commit_format(const char *arg)
{
- if (!*arg)
+ int i;
+
+ if (!arg || !*arg)
return CMIT_FMT_DEFAULT;
- if (!strcmp(arg, "=raw"))
- return CMIT_FMT_RAW;
- if (!strcmp(arg, "=medium"))
- return CMIT_FMT_MEDIUM;
- if (!strcmp(arg, "=short"))
- return CMIT_FMT_SHORT;
- if (!strcmp(arg, "=full"))
- return CMIT_FMT_FULL;
- if (!strcmp(arg, "=fuller"))
- return CMIT_FMT_FULLER;
- if (!strcmp(arg, "=oneline"))
- return CMIT_FMT_ONELINE;
- die("invalid --pretty format");
+ if (*arg == '=')
+ arg++;
+ for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
+ if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len))
+ return cmt_fmts[i].v;
+ }
+
+ die("invalid --pretty format: %s", arg);
}
static struct commit *check_commit(struct object *obj,
const unsigned char *sha1,
int quiet)
{
- if (obj->type != commit_type) {
+ if (obj->type != OBJ_COMMIT) {
if (!quiet)
error("Object %s is a %s, not a commit",
- sha1_to_hex(sha1), obj->type);
+ sha1_to_hex(sha1), typename(obj->type));
return NULL;
}
return (struct commit *) obj;
{
struct object *obj = lookup_object(sha1);
if (!obj) {
- struct commit *ret = xcalloc(1, sizeof(struct commit));
+ struct commit *ret = alloc_commit_node();
created_object(sha1, &ret->object);
- ret->object.type = commit_type;
+ ret->object.type = OBJ_COMMIT;
return ret;
}
if (!obj->type)
- obj->type = commit_type;
+ obj->type = OBJ_COMMIT;
return check_commit(obj, sha1, 0);
}
return date;
}
-static struct commit_graft {
- unsigned char sha1[20];
- int nr_parent;
- unsigned char parent[0][20]; /* more */
-} **commit_graft;
+static struct commit_graft **commit_graft;
static int commit_graft_alloc, commit_graft_nr;
static int commit_graft_pos(const unsigned char *sha1)
while (lo < hi) {
int mi = (lo + hi) / 2;
struct commit_graft *graft = commit_graft[mi];
- int cmp = memcmp(sha1, graft->sha1, 20);
+ int cmp = hashcmp(sha1, graft->sha1);
if (!cmp)
return mi;
if (cmp < 0)
return -lo - 1;
}
-static void prepare_commit_graft(void)
+int register_commit_graft(struct commit_graft *graft, int ignore_dups)
+{
+ int pos = commit_graft_pos(graft->sha1);
+
+ if (0 <= pos) {
+ if (ignore_dups)
+ free(graft);
+ else {
+ free(commit_graft[pos]);
+ commit_graft[pos] = graft;
+ }
+ return 1;
+ }
+ pos = -pos - 1;
+ if (commit_graft_alloc <= ++commit_graft_nr) {
+ commit_graft_alloc = alloc_nr(commit_graft_alloc);
+ commit_graft = xrealloc(commit_graft,
+ sizeof(*commit_graft) *
+ commit_graft_alloc);
+ }
+ if (pos < commit_graft_nr)
+ memmove(commit_graft + pos + 1,
+ commit_graft + pos,
+ (commit_graft_nr - pos - 1) *
+ sizeof(*commit_graft));
+ commit_graft[pos] = graft;
+ return 0;
+}
+
+struct commit_graft *read_graft_line(char *buf, int len)
+{
+ /* The format is just "Commit Parent1 Parent2 ...\n" */
+ int i;
+ struct commit_graft *graft = NULL;
+
+ if (buf[len-1] == '\n')
+ buf[--len] = 0;
+ if (buf[0] == '#' || buf[0] == '\0')
+ return NULL;
+ if ((len + 1) % 41) {
+ bad_graft_data:
+ error("bad graft data: %s", buf);
+ free(graft);
+ return NULL;
+ }
+ i = (len + 1) / 41 - 1;
+ graft = xmalloc(sizeof(*graft) + 20 * i);
+ graft->nr_parent = i;
+ if (get_sha1_hex(buf, graft->sha1))
+ goto bad_graft_data;
+ for (i = 40; i < len; i += 41) {
+ if (buf[i] != ' ')
+ goto bad_graft_data;
+ if (get_sha1_hex(buf + i + 1, graft->parent[i/41]))
+ goto bad_graft_data;
+ }
+ return graft;
+}
+
+int read_graft_file(const char *graft_file)
{
- char *graft_file = get_graft_file();
FILE *fp = fopen(graft_file, "r");
char buf[1024];
- if (!fp) {
- commit_graft = (struct commit_graft **) "hack";
- return;
- }
+ if (!fp)
+ return -1;
while (fgets(buf, sizeof(buf), fp)) {
/* The format is just "Commit Parent1 Parent2 ...\n" */
int len = strlen(buf);
- int i;
- struct commit_graft *graft = NULL;
-
- if (buf[len-1] == '\n')
- buf[--len] = 0;
- if (buf[0] == '#')
+ struct commit_graft *graft = read_graft_line(buf, len);
+ if (!graft)
continue;
- if ((len + 1) % 41) {
- bad_graft_data:
- error("bad graft data: %s", buf);
- free(graft);
- continue;
- }
- i = (len + 1) / 41 - 1;
- graft = xmalloc(sizeof(*graft) + 20 * i);
- graft->nr_parent = i;
- if (get_sha1_hex(buf, graft->sha1))
- goto bad_graft_data;
- for (i = 40; i < len; i += 41) {
- if (buf[i] != ' ')
- goto bad_graft_data;
- if (get_sha1_hex(buf + i + 1, graft->parent[i/41]))
- goto bad_graft_data;
- }
- i = commit_graft_pos(graft->sha1);
- if (0 <= i) {
+ if (register_commit_graft(graft, 1))
error("duplicate graft data: %s", buf);
- free(graft);
- continue;
- }
- i = -i - 1;
- if (commit_graft_alloc <= ++commit_graft_nr) {
- commit_graft_alloc = alloc_nr(commit_graft_alloc);
- commit_graft = xrealloc(commit_graft,
- sizeof(*commit_graft) *
- commit_graft_alloc);
- }
- if (i < commit_graft_nr)
- memmove(commit_graft + i + 1,
- commit_graft + i,
- (commit_graft_nr - i - 1) *
- sizeof(*commit_graft));
- commit_graft[i] = graft;
}
fclose(fp);
+ return 0;
+}
+
+static void prepare_commit_graft(void)
+{
+ static int commit_graft_prepared;
+ char *graft_file;
+
+ if (commit_graft_prepared)
+ return;
+ graft_file = get_graft_file();
+ read_graft_file(graft_file);
+ commit_graft_prepared = 1;
}
static struct commit_graft *lookup_commit_graft(const unsigned char *sha1)
{
int pos;
- if (!commit_graft)
- prepare_commit_graft();
+ prepare_commit_graft();
pos = commit_graft_pos(sha1);
if (pos < 0)
return NULL;
int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
{
+ char *tail = buffer;
char *bufptr = buffer;
unsigned char parent[20];
struct commit_list **pptr;
if (item->object.parsed)
return 0;
item->object.parsed = 1;
- if (memcmp(bufptr, "tree ", 5))
+ tail += size;
+ if (tail <= bufptr + 5 || memcmp(bufptr, "tree ", 5))
return error("bogus commit object %s", sha1_to_hex(item->object.sha1));
- if (get_sha1_hex(bufptr + 5, parent) < 0)
+ if (tail <= bufptr + 45 || get_sha1_hex(bufptr + 5, parent) < 0)
return error("bad tree pointer in commit %s",
sha1_to_hex(item->object.sha1));
item->tree = lookup_tree(parent);
pptr = &item->parents;
graft = lookup_commit_graft(item->object.sha1);
- while (!memcmp(bufptr, "parent ", 7)) {
+ while (bufptr + 48 < tail && !memcmp(bufptr, "parent ", 7)) {
struct commit *new_parent;
- if (get_sha1_hex(bufptr + 7, parent) || bufptr[47] != '\n')
+ if (tail <= bufptr + 48 ||
+ get_sha1_hex(bufptr + 7, parent) ||
+ bufptr[47] != '\n')
return error("bad parents in commit %s", sha1_to_hex(item->object.sha1));
bufptr += 48;
if (graft)
{
struct commit_list *parents;
- parents = commit->parents;
commit->object.flags &= ~mark;
+ parents = commit->parents;
while (parents) {
struct commit *parent = parents->item;
- if (parent && parent->object.parsed &&
- (parent->object.flags & mark))
+
+ /* Have we already cleared this? */
+ if (mark & parent->object.flags)
clear_commit_marks(parent, mark);
parents = parents->next;
}
while (len--) {
char c = *msg++;
+ if (!c)
+ break;
ret++;
if (c == '\n')
break;
- if (!c)
- return 0;
}
return ret;
}
+static int is_rfc2047_special(char ch)
+{
+ return ((ch & 0x80) || (ch == '=') || (ch == '?') || (ch == '_'));
+}
+
+static int add_rfc2047(char *buf, const char *line, int len)
+{
+ char *bp = buf;
+ int i, needquote;
+ static const char q_utf8[] = "=?utf-8?q?";
+
+ for (i = needquote = 0; !needquote && i < len; i++) {
+ unsigned ch = line[i];
+ if (ch & 0x80)
+ needquote++;
+ if ((i + 1 < len) &&
+ (ch == '=' && line[i+1] == '?'))
+ needquote++;
+ }
+ if (!needquote)
+ return sprintf(buf, "%.*s", len, line);
+
+ memcpy(bp, q_utf8, sizeof(q_utf8)-1);
+ bp += sizeof(q_utf8)-1;
+ for (i = 0; i < len; i++) {
+ unsigned ch = line[i] & 0xFF;
+ if (is_rfc2047_special(ch)) {
+ sprintf(bp, "=%02X", ch);
+ bp += 3;
+ }
+ else if (ch == ' ')
+ *bp++ = '_';
+ else
+ *bp++ = ch;
+ }
+ memcpy(bp, "?=", 2);
+ bp += 2;
+ return bp - buf;
+}
+
static int add_user_info(const char *what, enum cmit_fmt fmt, char *buf, const char *line)
{
char *date;
time = strtoul(date, &date, 10);
tz = strtol(date, NULL, 10);
- ret = sprintf(buf, "%s: %.*s%.*s\n", what,
- (fmt == CMIT_FMT_FULLER) ? 4 : 0,
- filler, namelen, line);
+ if (fmt == CMIT_FMT_EMAIL) {
+ char *name_tail = strchr(line, '<');
+ int display_name_length;
+ if (!name_tail)
+ return 0;
+ while (line < name_tail && isspace(name_tail[-1]))
+ name_tail--;
+ display_name_length = name_tail - line;
+ filler = "";
+ strcpy(buf, "From: ");
+ ret = strlen(buf);
+ ret += add_rfc2047(buf + ret, line, display_name_length);
+ memcpy(buf + ret, name_tail, namelen - display_name_length);
+ ret += namelen - display_name_length;
+ buf[ret++] = '\n';
+ }
+ else {
+ ret = sprintf(buf, "%s: %.*s%.*s\n", what,
+ (fmt == CMIT_FMT_FULLER) ? 4 : 0,
+ filler, namelen, line);
+ }
switch (fmt) {
case CMIT_FMT_MEDIUM:
ret += sprintf(buf + ret, "Date: %s\n", show_date(time, tz));
break;
+ case CMIT_FMT_EMAIL:
+ ret += sprintf(buf + ret, "Date: %s\n",
+ show_rfc2822_date(time, tz));
+ break;
case CMIT_FMT_FULLER:
ret += sprintf(buf + ret, "%sDate: %s\n", what, show_date(time, tz));
break;
return ret;
}
-static int is_empty_line(const char *line, int len)
+static int is_empty_line(const char *line, int *len_p)
{
+ int len = *len_p;
while (len && isspace(line[len-1]))
len--;
+ *len_p = len;
return !len;
}
struct commit_list *parent = commit->parents;
int offset;
- if ((fmt == CMIT_FMT_ONELINE) || !parent || !parent->next)
+ if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) ||
+ !parent || !parent->next)
return 0;
offset = sprintf(buf, "Merge:");
const char *hex = abbrev
? find_unique_abbrev(p->object.sha1, abbrev)
: sha1_to_hex(p->object.sha1);
- char *dots = (abbrev && strlen(hex) != 40) ? "..." : "";
+ const char *dots = (abbrev && strlen(hex) != 40) ? "..." : "";
parent = parent->next;
offset += sprintf(buf + offset, " %s%s", hex, dots);
return offset;
}
-unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, unsigned long len, char *buf, unsigned long space, int abbrev)
+unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject)
{
int hdr = 1, body = 0;
unsigned long offset = 0;
- int indent = (fmt == CMIT_FMT_ONELINE) ? 0 : 4;
+ int indent = 4;
int parents_shown = 0;
const char *msg = commit->buffer;
+ int plain_non_ascii = 0;
+
+ if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
+ indent = 0;
+
+ /* After-subject is used to pass in Content-Type: multipart
+ * MIME header; in that case we do not have to do the
+ * plaintext content type even if the commit message has
+ * non 7-bit ASCII character. Otherwise, check if we need
+ * to say this is not a 7-bit ASCII.
+ */
+ if (fmt == CMIT_FMT_EMAIL && !after_subject) {
+ int i, ch, in_body;
+
+ for (in_body = i = 0; (ch = msg[i]) && i < len; i++) {
+ if (!in_body) {
+ /* author could be non 7-bit ASCII but
+ * the log may so; skip over the
+ * header part first.
+ */
+ if (ch == '\n' &&
+ i + 1 < len && msg[i+1] == '\n')
+ in_body = 1;
+ }
+ else if (ch & 0x80) {
+ plain_non_ascii = 1;
+ break;
+ }
+ }
+ }
for (;;) {
const char *line = msg;
if (hdr) {
if (linelen == 1) {
hdr = 0;
- if (fmt != CMIT_FMT_ONELINE)
+ if ((fmt != CMIT_FMT_ONELINE) && !subject)
buf[offset++] = '\n';
continue;
}
continue;
}
- if (is_empty_line(line, linelen)) {
+ if (!subject)
+ body = 1;
+
+ if (is_empty_line(line, &linelen)) {
if (!body)
continue;
+ if (subject)
+ continue;
if (fmt == CMIT_FMT_SHORT)
break;
- } else {
- body = 1;
}
- memset(buf + offset, ' ', indent);
- memcpy(buf + offset + indent, line, linelen);
- offset += linelen + indent;
+ if (subject) {
+ int slen = strlen(subject);
+ memcpy(buf + offset, subject, slen);
+ offset += slen;
+ offset += add_rfc2047(buf + offset, line, linelen);
+ }
+ else {
+ memset(buf + offset, ' ', indent);
+ memcpy(buf + offset + indent, line, linelen);
+ offset += linelen + indent;
+ }
+ buf[offset++] = '\n';
if (fmt == CMIT_FMT_ONELINE)
break;
+ if (subject && plain_non_ascii) {
+ static const char header[] =
+ "Content-Type: text/plain; charset=UTF-8\n"
+ "Content-Transfer-Encoding: 8bit\n";
+ memcpy(buf + offset, header, sizeof(header)-1);
+ offset += sizeof(header)-1;
+ }
+ if (after_subject) {
+ int slen = strlen(after_subject);
+ if (slen > space - offset - 1)
+ slen = space - offset - 1;
+ memcpy(buf + offset, after_subject, slen);
+ offset += slen;
+ after_subject = NULL;
+ }
+ subject = NULL;
}
- if (fmt == CMIT_FMT_ONELINE) {
- /* We do not want the terminating newline */
- if (buf[offset - 1] == '\n')
- offset--;
- }
- else {
- /* Make sure there is an EOLN */
- if (buf[offset - 1] != '\n')
- buf[offset++] = '\n';
- }
+ while (offset && isspace(buf[offset-1]))
+ offset--;
+ /* Make sure there is an EOLN for the non-oneline case */
+ if (fmt != CMIT_FMT_ONELINE)
+ buf[offset++] = '\n';
+ /*
+ * make sure there is another EOLN to separate the headers from whatever
+ * body the caller appends if we haven't already written a body
+ */
+ if (fmt == CMIT_FMT_EMAIL && !body)
+ buf[offset++] = '\n';
buf[offset] = '\0';
return offset;
}
int count_parents(struct commit * commit)
{
- int count = 0;
+ int count;
struct commit_list * parents = commit->parents;
- for (count=0;parents; parents=parents->next,count++)
- ;
+ for (count = 0; parents; parents = parents->next,count++)
+ ;
return count;
}
void topo_sort_default_setter(struct commit *c, void *data)
{
- c->object.util = data;
+ c->util = data;
}
void *topo_sort_default_getter(struct commit *c)
{
- return c->object.util;
+ return c->util;
}
/*
}
free(nodes);
}
+
+/* merge-rebase stuff */
+
+/* bits #0..7 in revision.h */
+#define PARENT1 (1u<< 8)
+#define PARENT2 (1u<< 9)
+#define STALE (1u<<10)
+#define RESULT (1u<<11)
+
+static struct commit *interesting(struct commit_list *list)
+{
+ while (list) {
+ struct commit *commit = list->item;
+ list = list->next;
+ if (commit->object.flags & STALE)
+ continue;
+ return commit;
+ }
+ return NULL;
+}
+
+static struct commit_list *merge_bases(struct commit *one, struct commit *two)
+{
+ struct commit_list *list = NULL;
+ struct commit_list *result = NULL;
+
+ if (one == two)
+ /* We do not mark this even with RESULT so we do not
+ * have to clean it up.
+ */
+ return commit_list_insert(one, &result);
+
+ parse_commit(one);
+ parse_commit(two);
+
+ one->object.flags |= PARENT1;
+ two->object.flags |= PARENT2;
+ insert_by_date(one, &list);
+ insert_by_date(two, &list);
+
+ while (interesting(list)) {
+ struct commit *commit;
+ struct commit_list *parents;
+ struct commit_list *n;
+ int flags;
+
+ commit = list->item;
+ n = list->next;
+ free(list);
+ list = n;
+
+ flags = commit->object.flags & (PARENT1 | PARENT2 | STALE);
+ if (flags == (PARENT1 | PARENT2)) {
+ if (!(commit->object.flags & RESULT)) {
+ commit->object.flags |= RESULT;
+ insert_by_date(commit, &result);
+ }
+ /* Mark parents of a found merge stale */
+ flags |= STALE;
+ }
+ parents = commit->parents;
+ while (parents) {
+ struct commit *p = parents->item;
+ parents = parents->next;
+ if ((p->object.flags & flags) == flags)
+ continue;
+ parse_commit(p);
+ p->object.flags |= flags;
+ insert_by_date(p, &list);
+ }
+ }
+
+ /* Clean up the result to remove stale ones */
+ list = result; result = NULL;
+ while (list) {
+ struct commit_list *n = list->next;
+ if (!(list->item->object.flags & STALE))
+ insert_by_date(list->item, &result);
+ free(list);
+ list = n;
+ }
+ return result;
+}
+
+struct commit_list *get_merge_bases(struct commit *one,
+ struct commit *two,
+ int cleanup)
+{
+ const unsigned all_flags = (PARENT1 | PARENT2 | STALE | RESULT);
+ struct commit_list *list;
+ struct commit **rslt;
+ struct commit_list *result;
+ int cnt, i, j;
+
+ result = merge_bases(one, two);
+ if (one == two)
+ return result;
+ if (!result || !result->next) {
+ if (cleanup) {
+ clear_commit_marks(one, all_flags);
+ clear_commit_marks(two, all_flags);
+ }
+ return result;
+ }
+
+ /* There are more than one */
+ cnt = 0;
+ list = result;
+ while (list) {
+ list = list->next;
+ cnt++;
+ }
+ rslt = xcalloc(cnt, sizeof(*rslt));
+ for (list = result, i = 0; list; list = list->next)
+ rslt[i++] = list->item;
+ free_commit_list(result);
+
+ clear_commit_marks(one, all_flags);
+ clear_commit_marks(two, all_flags);
+ for (i = 0; i < cnt - 1; i++) {
+ for (j = i+1; j < cnt; j++) {
+ if (!rslt[i] || !rslt[j])
+ continue;
+ result = merge_bases(rslt[i], rslt[j]);
+ clear_commit_marks(rslt[i], all_flags);
+ clear_commit_marks(rslt[j], all_flags);
+ for (list = result; list; list = list->next) {
+ if (rslt[i] == list->item)
+ rslt[i] = NULL;
+ if (rslt[j] == list->item)
+ rslt[j] = NULL;
+ }
+ }
+ }
+
+ /* Surviving ones in rslt[] are the independent results */
+ result = NULL;
+ for (i = 0; i < cnt; i++) {
+ if (rslt[i])
+ insert_by_date(rslt[i], &result);
+ }
+ free(rslt);
+ return result;
+}