GerbilSoft/zlib-ng
1
Fork 0
mirror of https://github.com/GerbilSoft/zlib-ng.git synced 2025-06-18 11:35:35 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity

Clean up insert_match() in deflate_medium

Browse Source
This commit is contained in:
Hans Kristian Rosbach 2024-02-21 14:50:18 +01:00 committed by Hans Kristian Rosbach
parent 322753f36e
commit 56d3d9851a
1 changed files with 15 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
deflate_medium.c
View File

@ -45,10 +45,12 @@ static void insert_match(deflate_state *s, struct match match) {
if (UNLIKELY(s->lookahead <= (unsigned int)(match.match_length + WANT_MIN_MATCH)))
return;
/* matches that are not long enough we need to emit as literals */
if (LIKELY(match.match_length < WANT_MIN_MATCH)) {
/* string at strstart already in table */
match.strstart++;
match.match_length--;
/* matches that are not long enough we need to emit as literals */
if (LIKELY(match.match_length < WANT_MIN_MATCH - 1)) {
if (UNLIKELY(match.match_length > 0)) {
if (match.strstart >= match.orgstart) {
if (match.strstart + match.match_length - 1 >= match.orgstart) {
@ -63,11 +65,7 @@ static void insert_match(deflate_state *s, struct match match) {
return;
}
/* Insert new strings in the hash table. */
if (s->lookahead >= WANT_MIN_MATCH) {
match.match_length--; /* string at strstart already in table */
match.strstart++;
/* Insert into hash table. */
if (LIKELY(match.strstart >= match.orgstart)) {
if (LIKELY(match.strstart + match.match_length - 1 >= match.orgstart)) {
insert_string(s, match.strstart, match.match_length);
@ -79,17 +77,6 @@ static void insert_match(deflate_state *s, struct match match) {
}
match.strstart += match.match_length;
match.match_length = 0;
} else {
match.strstart += match.match_length;
match.match_length = 0;
if (match.strstart >= (STD_MIN_MATCH - 2))
quick_insert_string(s, match.strstart + 2 - STD_MIN_MATCH);
/* If lookahead < WANT_MIN_MATCH, ins_h is garbage, but it does not
* matter since it will be recomputed at next deflate call.
*/
}
}
static void fizzle_matches(deflate_state *s, struct match *current, struct match *next) {