+#include <ctype.h>
#include "tag.h"
#include "commit.h"
#include "cache.h"
const char *commit_type = "commit";
-static struct commit *check_commit(struct object *obj, unsigned char *sha1)
+enum cmit_fmt get_commit_format(const char *arg)
+{
+ if (!*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;
+ die("invalid --pretty format");
+}
+
+static struct commit *check_commit(struct object *obj, const unsigned char *sha1)
{
if (obj->type != commit_type) {
error("Object %s is a %s, not a commit",
return (struct commit *) obj;
}
-struct commit *lookup_commit_reference(unsigned char *sha1)
+struct commit *lookup_commit_reference(const unsigned char *sha1)
{
struct object *obj = parse_object(sha1);
return check_commit(obj, sha1);
}
-struct commit *lookup_commit(unsigned char *sha1)
+struct commit *lookup_commit(const unsigned char *sha1)
{
struct object *obj = lookup_object(sha1);
if (!obj) {
{
void *bufptr = buffer;
unsigned char parent[20];
+ struct commit_list **pptr;
if (item->object.parsed)
return 0;
if (item->tree)
add_ref(&item->object, &item->tree->object);
bufptr += 46; /* "tree " + "hex sha1" + "\n" */
+ pptr = &item->parents;
while (!memcmp(bufptr, "parent ", 7) &&
!get_sha1_hex(bufptr + 7, parent)) {
struct commit *new_parent = lookup_commit(parent);
if (new_parent) {
- commit_list_insert(new_parent, &item->parents);
+ pptr = &commit_list_insert(new_parent, pptr)->next;
add_ref(&item->object, &new_parent->object);
}
bufptr += 48;
return ret;
}
-void commit_list_insert(struct commit *item, struct commit_list **list_p)
+struct commit_list *commit_list_insert(struct commit *item, struct commit_list **list_p)
{
struct commit_list *new_list = xmalloc(sizeof(struct commit_list));
new_list->item = item;
new_list->next = *list_p;
*list_p = new_list;
+ return new_list;
}
void free_commit_list(struct commit_list *list)
}
}
-static void insert_by_date(struct commit_list **list, struct commit *item)
+void insert_by_date(struct commit_list **list, struct commit *item)
{
struct commit_list **pp = list;
struct commit_list *p;
}
return ret;
}
+
+/*
+ * Generic support for pretty-printing the header
+ */
+static int get_one_line(const char *msg, unsigned long len)
+{
+ int ret = 0;
+
+ while (len--) {
+ char c = *msg++;
+ ret++;
+ if (c == '\n')
+ break;
+ if (!c)
+ return 0;
+ }
+ return ret;
+}
+
+static int add_user_info(const char *what, enum cmit_fmt fmt, char *buf, const char *line)
+{
+ char *date;
+ unsigned int namelen;
+ unsigned long time;
+ int tz, ret;
+
+ date = strchr(line, '>');
+ if (!date)
+ return 0;
+ namelen = ++date - line;
+ time = strtoul(date, &date, 10);
+ tz = strtol(date, NULL, 10);
+
+ ret = sprintf(buf, "%s: %.*s\n", what, namelen, line);
+ if (fmt == CMIT_FMT_MEDIUM)
+ ret += sprintf(buf + ret, "Date: %s\n", show_date(time, tz));
+ return ret;
+}
+
+static int is_empty_line(const char *line, int len)
+{
+ while (len && isspace(line[len-1]))
+ len--;
+ return !len;
+}
+
+static int add_parent_info(enum cmit_fmt fmt, char *buf, const char *line, int parents)
+{
+ int offset = 0;
+ switch (parents) {
+ case 1:
+ break;
+ case 2:
+ /* Go back to the previous line: 40 characters of previous parent, and one '\n' */
+ offset = sprintf(buf, "Merge: %.40s\n", line-41);
+ /* Fallthrough */
+ default:
+ /* Replace the previous '\n' with a space */
+ buf[offset-1] = ' ';
+ offset += sprintf(buf + offset, "%.40s\n", line+7);
+ }
+ return offset;
+}
+
+unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space)
+{
+ int hdr = 1, body = 0;
+ unsigned long offset = 0;
+ int parents = 0;
+
+ for (;;) {
+ const char *line = msg;
+ int linelen = get_one_line(msg, len);
+
+ if (!linelen)
+ break;
+
+ /*
+ * We want some slop for indentation and a possible
+ * final "...". Thus the "+ 20".
+ */
+ if (offset + linelen + 20 > space) {
+ memcpy(buf + offset, " ...\n", 8);
+ offset += 8;
+ break;
+ }
+
+ msg += linelen;
+ len -= linelen;
+ if (hdr) {
+ if (linelen == 1) {
+ hdr = 0;
+ buf[offset++] = '\n';
+ continue;
+ }
+ if (fmt == CMIT_FMT_RAW) {
+ memcpy(buf + offset, line, linelen);
+ offset += linelen;
+ continue;
+ }
+ if (!memcmp(line, "parent ", 7)) {
+ if (linelen != 48)
+ die("bad parent line in commit");
+ offset += add_parent_info(fmt, buf + offset, line, ++parents);
+ }
+ if (!memcmp(line, "author ", 7))
+ offset += add_user_info("Author", fmt, buf + offset, line + 7);
+ if (fmt == CMIT_FMT_FULL) {
+ if (!memcmp(line, "committer ", 10))
+ offset += add_user_info("Commit", fmt, buf + offset, line + 10);
+ }
+ continue;
+ }
+
+ if (is_empty_line(line, linelen)) {
+ if (!body)
+ continue;
+ if (fmt == CMIT_FMT_SHORT)
+ break;
+ } else {
+ body = 1;
+ }
+ memset(buf + offset, ' ', 4);
+ memcpy(buf + offset + 4, line, linelen);
+ offset += linelen + 4;
+ }
+ /* Make sure there is an EOLN */
+ if (buf[offset - 1] != '\n')
+ buf[offset++] = '\n';
+ buf[offset] = '\0';
+ return offset;
+}
+
+struct commit *pop_commit(struct commit_list **stack)
+{
+ struct commit_list *top = *stack;
+ struct commit *item = top ? top->item : NULL;
+
+ if (top) {
+ *stack = top->next;
+ free(top);
+ }
+ return item;
+}
+
+int count_parents(struct commit * commit)
+{
+ int count = 0;
+ struct commit_list * parents = commit->parents;
+ for (count=0;parents; parents=parents->next,count++)
+ ;
+ return count;
+}
+