[GSOC][PATCH v2 2/6] apply: change some variables from `int` to `size_t`

[Zejun Zhao <jelly.zhao.42@gmail.com>]

Some assigned variables are mistyped as `int`, including

  - those whose values come from a system function returning `size_t`,

  - those that are used for array indexing,

  - those that represent length/size/distance,

some of which will trigger -Wsign-comparison warnings.

Change some of them to `size_t`/`unsigned`.

Signed-off-by: Zejun Zhao <jelly.zhao.42@gmail.com>
---
 apply.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/apply.c b/apply.c
index 831b338155..b4ae74a5fb 100644
--- a/apply.c
+++ b/apply.c
@@ -1087,7 +1087,7 @@ static int gitdiff_index(struct gitdiff_data *state,
 	 * and optional space with octal mode.
 	 */
 	const char *ptr, *eol;
-	int len;
+	size_t len;
 	const unsigned hexsz = the_hash_algo->hexsz;
 
 	ptr = strchr(line, '.');
@@ -2185,7 +2185,7 @@ static int parse_chunk(struct apply_state *state, char *buffer, unsigned long si
 			};
 			int i;
 			for (i = 0; binhdr[i]; i++) {
-				int len = strlen(binhdr[i]);
+				size_t len = strlen(binhdr[i]);
 				if (len < size - hd &&
 				    !memcmp(binhdr[i], buffer + hd, len)) {
 					state->linenr++;
@@ -2320,7 +2320,8 @@ static void update_pre_post_images(struct image *preimage,
 {
 	struct image fixed_preimage = IMAGE_INIT;
 	size_t insert_pos = 0;
-	int i, ctx, reduced;
+	int i, reduced;
+	size_t ctx;
 	const char *fixed;
 
 	/*
@@ -2492,7 +2493,7 @@ static int match_fragment(struct apply_state *state,
 	struct strbuf fixed = STRBUF_INIT;
 	char *fixed_buf;
 	size_t fixed_len;
-	int preimage_limit;
+	size_t preimage_limit;
 	int ret;
 
 	if (preimage->line_nr + current_lno <= img->line_nr) {
@@ -2706,7 +2707,7 @@ static int find_pos(struct apply_state *state,
 {
 	int i;
 	unsigned long backwards, forwards, current;
-	int backwards_lno, forwards_lno, current_lno;
+	size_t backwards_lno, forwards_lno, current_lno;
 
 	/*
 	 * When running with --allow-overlap, it is possible that a hunk is
@@ -2791,7 +2792,7 @@ static int find_pos(struct apply_state *state,
  */
 static void update_image(struct apply_state *state,
 			 struct image *img,
-			 int applied_pos,
+			 size_t applied_pos,
 			 struct image *preimage,
 			 struct image *postimage)
 {
@@ -2803,7 +2804,7 @@ static void update_image(struct apply_state *state,
 	size_t remove_count, insert_count, applied_at = 0;
 	size_t result_alloc;
 	char *result;
-	int preimage_limit;
+	size_t preimage_limit;
 
 	/*
 	 * If we are removing blank lines at the end of img,
@@ -4288,19 +4289,19 @@ static void summary_patch_list(struct patch *patch)
 
 static void patch_stats(struct apply_state *state, struct patch *patch)
 {
-	int lines = patch->lines_added + patch->lines_deleted;
+	unsigned lines = patch->lines_added + patch->lines_deleted;
 
 	if (lines > state->max_change)
 		state->max_change = lines;
 	if (patch->old_name) {
-		int len = quote_c_style(patch->old_name, NULL, NULL, 0);
+		size_t len = quote_c_style(patch->old_name, NULL, NULL, 0);
 		if (!len)
 			len = strlen(patch->old_name);
 		if (len > state->max_len)
 			state->max_len = len;
 	}
 	if (patch->new_name) {
-		int len = quote_c_style(patch->new_name, NULL, NULL, 0);
+		size_t len = quote_c_style(patch->new_name, NULL, NULL, 0);
 		if (!len)
 			len = strlen(patch->new_name);
 		if (len > state->max_len)
-- 
2.43.0