X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-apply.c;h=e71789803749b22a3ec041b2bce533957cea1c72;hb=240ba7f235c9b946678bd6d34826fb73ea8fd90e;hp=f94d0dbf488ff43ccc496939560c81daf05772cf;hpb=efa615ba089e88c0d2645f444373751de0529214;p=git.git

diff --git a/builtin-apply.c b/builtin-apply.c
index f94d0dbf4..e71789803 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -185,7 +185,7 @@ static void *read_patch_file(int fd, unsigned long *sizep)
 	void *buffer = xmalloc(alloc);
 
 	for (;;) {
-		int nr = alloc - size;
+		ssize_t nr = alloc - size;
 		if (nr < 1024) {
 			alloc += CHUNKSIZE;
 			buffer = xrealloc(buffer, alloc);
@@ -1468,7 +1468,7 @@ static int read_old_data(struct stat *st, const char *path, char **buf_p, unsign
 			return error("unable to open %s", path);
 		got = 0;
 		for (;;) {
-			int ret = xread(fd, buf + got, size - got);
+			ssize_t ret = xread(fd, buf + got, size - got);
 			if (ret <= 0)
 				break;
 			got += ret;
@@ -1671,6 +1671,7 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag, i
 	char *new = xmalloc(size);
 	const char *oldlines, *newlines;
 	int oldsize = 0, newsize = 0;
+	int new_blank_lines_at_end = 0;
 	unsigned long leading, trailing;
 	int pos, lines;
 
@@ -1678,6 +1679,7 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag, i
 		char first;
 		int len = linelen(patch, size);
 		int plen;
+		int added_blank_line = 0;
 
 		if (!len)
 			break;
@@ -1699,6 +1701,7 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag, i
 			else if (first == '+')
 				first = '-';
 		}
+
 		switch (first) {
 		case '\n':
 			/* Newer GNU diff, empty context line */
@@ -1716,9 +1719,14 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag, i
 				break;
 		/* Fall-through for ' ' */
 		case '+':
-			if (first != '+' || !no_add)
-				newsize += apply_line(new + newsize, patch,
-						      plen);
+			if (first != '+' || !no_add) {
+				int added = apply_line(new + newsize, patch,
+						       plen);
+				newsize += added;
+				if (first == '+' &&
+				    added == 1 && new[newsize-1] == '\n')
+					added_blank_line = 1;
+			}
 			break;
 		case '@': case '\\':
 			/* Ignore it, we already handled it */
@@ -1728,6 +1736,10 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag, i
 				error("invalid start of line: '%c'", first);
 			return -1;
 		}
+		if (added_blank_line)
+			new_blank_lines_at_end++;
+		else
+			new_blank_lines_at_end = 0;
 		patch += len;
 		size -= len;
 	}
@@ -1770,9 +1782,16 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag, i
 		if (match_beginning && offset)
 			offset = -1;
 		if (offset >= 0) {
-			int diff = newsize - oldsize;
-			unsigned long size = desc->size + diff;
-			unsigned long alloc = desc->alloc;
+			int diff;
+			unsigned long size, alloc;
+
+			if (new_whitespace == strip_whitespace &&
+			    (desc->size - oldsize - offset == 0)) /* end of file? */
+				newsize -= new_blank_lines_at_end;
+
+			diff = newsize - oldsize;
+			size = desc->size + diff;
+			alloc = desc->alloc;
 
 			/* Warn if it was necessary to reduce the number
 			 * of context lines.
@@ -2009,6 +2028,29 @@ static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *
 	return 0;
 }
 
+static int check_to_create_blob(const char *new_name, int ok_if_exists)
+{
+	struct stat nst;
+	if (!lstat(new_name, &nst)) {
+		if (S_ISDIR(nst.st_mode) || ok_if_exists)
+			return 0;
+		/*
+		 * A leading component of new_name might be a symlink
+		 * that is going to be removed with this patch, but
+		 * still pointing at somewhere that has the path.
+		 * In such a case, path "new_name" does not exist as
+		 * far as git is concerned.
+		 */
+		if (has_symlink_leading_path(new_name, NULL))
+			return 0;
+
+		return error("%s: already exists in working directory", new_name);
+	}
+	else if ((errno != ENOENT) && (errno != ENOTDIR))
+		return error("%s: %s", new_name, strerror(errno));
+	return 0;
+}
+
 static int check_patch(struct patch *patch, struct patch *prev_patch)
 {
 	struct stat st;
@@ -2095,15 +2137,9 @@ static int check_patch(struct patch *patch, struct patch *prev_patch)
 		    !ok_if_exists)
 			return error("%s: already exists in index", new_name);
 		if (!cached) {
-			struct stat nst;
-			if (!lstat(new_name, &nst)) {
-				if (S_ISDIR(nst.st_mode) || ok_if_exists)
-					; /* ok */
-				else
-					return error("%s: already exists in working directory", new_name);
-			}
-			else if ((errno != ENOENT) && (errno != ENOTDIR))
-				return error("%s: %s", new_name, strerror(errno));
+			int err = check_to_create_blob(new_name, ok_if_exists);
+			if (err)
+				return err;
 		}
 		if (!patch->new_mode) {
 			if (0 < patch->is_new)