X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=read-tree.c;h=32fb6faa1cfeecd2c1d67685cc2de8a52b447aed;hb=72fdfb50f721460e4cdff16fbe9c72d4ce6c668c;hp=df156ea0dad15ee810e8036442dfcab9202ef46a;hpb=302ebfe52192fff9a2c1c612dff22325fd073acc;p=git.git

diff --git a/read-tree.c b/read-tree.c
index df156ea0..32fb6faa 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -9,12 +9,17 @@
 
 #include "object.h"
 #include "tree.h"
+#include <sys/time.h>
+#include <signal.h>
 
 static int merge = 0;
 static int update = 0;
 static int index_only = 0;
 static int nontrivial_merge = 0;
 static int trivial_merges_only = 0;
+static int aggressive = 0;
+static int verbose_update = 0;
+static volatile int progress_update = 0;
 
 static int head_idx = -1;
 static int merge_size = 0;
@@ -266,6 +271,28 @@ static void unlink_entry(char *name)
 	}
 }
 
+static void progress_interval(int signum)
+{
+	progress_update = 1;
+}
+
+static void setup_progress_signal(void)
+{
+	struct sigaction sa;
+	struct itimerval v;
+
+	memset(&sa, 0, sizeof(sa));
+	sa.sa_handler = progress_interval;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = SA_RESTART;
+	sigaction(SIGALRM, &sa, NULL);
+
+	v.it_interval.tv_sec = 1;
+	v.it_interval.tv_usec = 0;
+	v.it_value = v.it_interval;
+	setitimer(ITIMER_REAL, &v, NULL);
+}
+
 static void check_updates(struct cache_entry **src, int nr)
 {
 	static struct checkout state = {
@@ -275,8 +302,43 @@ static void check_updates(struct cache_entry **src, int nr)
 		.refresh_cache = 1,
 	};
 	unsigned short mask = htons(CE_UPDATE);
+	unsigned last_percent = 200, cnt = 0, total = 0;
+
+	if (update && verbose_update) {
+		for (total = cnt = 0; cnt < nr; cnt++) {
+			struct cache_entry *ce = src[cnt];
+			if (!ce->ce_mode || ce->ce_flags & mask)
+				total++;
+		}
+
+		/* Don't bother doing this for very small updates */
+		if (total < 250)
+			total = 0;
+
+		if (total) {
+			fprintf(stderr, "Checking files out...\n");
+			setup_progress_signal();
+			progress_update = 1;
+		}
+		cnt = 0;
+	}
+
 	while (nr--) {
 		struct cache_entry *ce = *src++;
+
+		if (total) {
+			if (!ce->ce_mode || ce->ce_flags & mask) {
+				unsigned percent;
+				cnt++;
+				percent = (cnt * 100) / total;
+				if (percent != last_percent ||
+				    progress_update) {
+					fprintf(stderr, "%4u%% (%u/%u) done\r",
+						percent, cnt, total);
+					last_percent = percent;
+				}
+			}
+		}
 		if (!ce->ce_mode) {
 			if (update)
 				unlink_entry(ce->name);
@@ -288,23 +350,30 @@ static void check_updates(struct cache_entry **src, int nr)
 				checkout_entry(ce, &state);
 		}
 	}
+	if (total) {
+		signal(SIGALRM, SIG_IGN);
+		fputc('\n', stderr);
+	}
 }
 
 static int unpack_trees(merge_fn_t fn)
 {
 	int indpos = 0;
 	unsigned len = object_list_length(trees);
-	struct tree_entry_list **posns = 
-		xmalloc(len * sizeof(struct tree_entry_list *));
+	struct tree_entry_list **posns;
 	int i;
 	struct object_list *posn = trees;
 	merge_size = len;
-	for (i = 0; i < len; i++) {
-		posns[i] = ((struct tree *) posn->item)->entries;
-		posn = posn->next;
+
+	if (len) {
+		posns = xmalloc(len * sizeof(struct tree_entry_list *));
+		for (i = 0; i < len; i++) {
+			posns[i] = ((struct tree *) posn->item)->entries;
+			posn = posn->next;
+		}
+		if (unpack_trees_rec(posns, len, "", fn, &indpos))
+			return -1;
 	}
-	if (unpack_trees_rec(posns, len, "", fn, &indpos))
-		return -1;
 
 	if (trivial_merges_only && nontrivial_merge)
 		die("Merge requires file-level merging");
@@ -421,11 +490,14 @@ static int threeway_merge(struct cache_entry **stages)
 	int df_conflict_remote = 0;
 
 	int any_anc_missing = 0;
+	int no_anc_exists = 1;
 	int i;
 
 	for (i = 1; i < head_idx; i++) {
 		if (!stages[i])
 			any_anc_missing = 1;
+		else
+			no_anc_exists = 0;
 	}
 
 	index = stages[0];
@@ -486,6 +558,31 @@ static int threeway_merge(struct cache_entry **stages)
 	if (!head && !remote && any_anc_missing)
 		return 0;
 
+	/* Under the new "aggressive" rule, we resolve mostly trivial
+	 * cases that we historically had git-merge-one-file resolve.
+	 */
+	if (aggressive) {
+		int head_deleted = !head && !df_conflict_head;
+		int remote_deleted = !remote && !df_conflict_remote;
+		/*
+		 * Deleted in both.
+		 * Deleted in one and unchanged in the other.
+		 */
+		if ((head_deleted && remote_deleted) ||
+		    (head_deleted && remote && remote_match) ||
+		    (remote_deleted && head && head_match)) {
+			if (index)
+				return deleted_entry(index, index);
+			return 0;
+		}
+		/*
+		 * Added in both, identically.
+		 */
+		if (no_anc_exists && head && remote && same(head, remote))
+			return merged_entry(head, index);
+
+	}
+
 	/* Below are "no merge" cases, which require that the index be
 	 * up-to-date to avoid the files getting overwritten with
 	 * conflict resolution files. 
@@ -534,7 +631,7 @@ static int twoway_merge(struct cache_entry **src)
 	struct cache_entry *oldtree = src[1], *newtree = src[2];
 
 	if (merge_size != 2)
-		return error("Cannot do a twoway merge of %d trees\n",
+		return error("Cannot do a twoway merge of %d trees",
 			     merge_size);
 
 	if (current) {
@@ -586,7 +683,7 @@ static int oneway_merge(struct cache_entry **src)
 	struct cache_entry *a = src[1];
 
 	if (merge_size != 1)
-		return error("Cannot do a oneway merge of %d trees\n",
+		return error("Cannot do a oneway merge of %d trees",
 			     merge_size);
 
 	if (!a)
@@ -629,6 +726,8 @@ int main(int argc, char **argv)
 	unsigned char sha1[20];
 	merge_fn_t fn = NULL;
 
+	setup_git_directory();
+
 	newfd = hold_index_file_for_update(&cache_file, get_index_file());
 	if (newfd < 0)
 		die("unable to create new cachefile");
@@ -648,6 +747,11 @@ int main(int argc, char **argv)
 			continue;
 		}
 
+		if (!strcmp(arg, "-v")) {
+			verbose_update = 1;
+			continue;
+		}
+
 		/* "-i" means "index only", meaning that a merge will
 		 * not even look at the working tree.
 		 */
@@ -672,6 +776,11 @@ int main(int argc, char **argv)
 			continue;
 		}
 
+		if (!strcmp(arg, "--aggressive")) {
+			aggressive = 1;
+			continue;
+		}
+
 		/* "-m" stands for "merge", meaning we start in stage 1 */
 		if (!strcmp(arg, "-m")) {
 			if (stage || merge)