X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=commit.c;h=03f8ca87960bff7694f9eac5640bd42d928f1b25;hb=34155390a576d8124e0adc864aaf2f11bbf5168b;hp=de5e94d1dd5eabc5dfdf6935cb90096c3d37c13e;hpb=e3bc7a3bc7b77f44d686003f5a9346a135529f73;p=git.git

diff --git a/commit.c b/commit.c
index de5e94d1..03f8ca87 100644
--- a/commit.c
+++ b/commit.c
@@ -1,10 +1,26 @@
+#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", 
@@ -14,7 +30,7 @@ static struct commit *check_commit(struct object *obj, unsigned char *sha1)
 	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);
 
@@ -25,7 +41,7 @@ struct commit *lookup_commit_reference(unsigned char *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) {
@@ -62,6 +78,7 @@ int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
 {
 	void *bufptr = buffer;
 	unsigned char parent[20];
+	struct commit_list **pptr;
 
 	if (item->object.parsed)
 		return 0;
@@ -71,11 +88,12 @@ int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
 	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;
@@ -129,7 +147,7 @@ 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;
@@ -193,14 +211,13 @@ static int get_one_line(const char *msg, unsigned long len)
 	return ret;
 }
 
-static int add_author_info(char *buf, const char *line, int len)
+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;
+	int tz, ret;
 
-	line += strlen("author ");
 	date = strchr(line, '>');
 	if (!date)
 		return 0;
@@ -208,15 +225,42 @@ static int add_author_info(char *buf, const char *line, int len)
 	time = strtoul(date, &date, 10);
 	tz = strtol(date, NULL, 10);
 
-	return sprintf(buf, "Author: %.*s\nDate:   %s\n",
-		namelen, line,
-		show_date(time, tz));
+	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(const char *msg, unsigned long len, char *buf, unsigned long space)
+unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space)
 {
-	int hdr = 1;
+	int hdr = 1, body = 0;
 	unsigned long offset = 0;
+	int parents = 0;
 
 	for (;;) {
 		const char *line = msg;
@@ -237,13 +281,39 @@ unsigned long pretty_print_commit(const char *msg, unsigned long len, char *buf,
 
 		msg += linelen;
 		len -= linelen;
-		if (linelen == 1)
-			hdr = 0;
 		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_author_info(buf + offset, line, linelen);
+				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;
@@ -254,3 +324,25 @@ unsigned long pretty_print_commit(const char *msg, unsigned long len, char *buf,
 	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;
+}
+