[PATCH v2 1/4] diff.c: pass struct diff_words into find_word_boundaries

[Thomas Rast <trast@student.ethz.ch>]

We need the word_regex_check member.  Instead of adding another
argument, just pass in the whole struct for future extensibility.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
---
 diff.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/diff.c b/diff.c
index 0a43869..5fdcb15 100644
--- a/diff.c
+++ b/diff.c
@@ -778,12 +778,13 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
 }
 
 /* This function starts looking at *begin, and returns 0 iff a word was found. */
-static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex,
+static int find_word_boundaries(mmfile_t *buffer, struct diff_words_data *diff_words,
 		int *begin, int *end)
 {
-	if (word_regex && *begin < buffer->size) {
+	if (diff_words->word_regex && *begin < buffer->size) {
 		regmatch_t match[1];
-		if (!regexec(word_regex, buffer->ptr + *begin, 1, match, 0)) {
+		if (!regexec(diff_words->word_regex, buffer->ptr + *begin,
+			     1, match, 0)) {
 			char *p = memchr(buffer->ptr + *begin + match[0].rm_so,
 					'\n', match[0].rm_eo - match[0].rm_so);
 			*end = p ? p - buffer->ptr : match[0].rm_eo + *begin;
@@ -813,7 +814,7 @@ static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex,
  * in buffer->orig.
  */
 static void diff_words_fill(struct diff_words_buffer *buffer, mmfile_t *out,
-		regex_t *word_regex)
+		struct diff_words_data *diff_words)
 {
 	int i, j;
 	long alloc = 0;
@@ -827,7 +828,7 @@ static void diff_words_fill(struct diff_words_buffer *buffer, mmfile_t *out,
 	buffer->orig_nr = 1;
 
 	for (i = 0; i < buffer->text.size; i++) {
-		if (find_word_boundaries(&buffer->text, word_regex, &i, &j))
+		if (find_word_boundaries(&buffer->text, diff_words, &i, &j))
 			return;
 
 		/* store original boundaries */
-- 
1.7.3.4.789.g74ad1