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[PATCH v4 12/18] Make rewrite_parents public to other part of git

From
Bo Yang <struggleyb.nku@gmail.com>
Date
Aug 5, 2010, 16:11 UTC
Message-ID
<1281024717-7855-13-git-send-email-struggleyb.nku@gmail.com>
In-Reply-To
<1281024717-7855-1-git-send-email-struggleyb.nku@gmail.com>

The function rewrite_one is used to rewrite a single parent of the current commit, and is used by rewrite_parents to rewrite all the parents.

Decouple the dependence between them by making rewrite_one a callback function that is passed to rewrite_parents. Then export rewrite_parents for reuse by the line history browser.

We will use this function in line.c.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
---
 revision.c |   13 ++++---------
 revision.h |   10 ++++++++++
 2 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/revision.c b/revision.c
index 25c9a94..fb08978 100644
--- a/revision.c
+++ b/revision.c
@@ -1893,12 +1893,6 @@ int prepare_revision_walk(struct rev_info *revs)
 	return 0;
 }
 
-enum rewrite_result {
-	rewrite_one_ok,
-	rewrite_one_noparents,
-	rewrite_one_error
-};
-
 static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp)
 {
 	struct commit_list *cache = NULL;
@@ -1920,12 +1914,13 @@ static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp
 	}
 }
 
-static int rewrite_parents(struct rev_info *revs, struct commit *commit)
+int rewrite_parents(struct rev_info *revs, struct commit *commit,
+	rewrite_parent_fn_t rewrite_parent)
 {
 	struct commit_list **pp = &commit->parents;
 	while (*pp) {
 		struct commit_list *parent = *pp;
-		switch (rewrite_one(revs, &parent->item)) {
+		switch (rewrite_parent(revs, &parent->item)) {
 		case rewrite_one_ok:
 			break;
 		case rewrite_one_noparents:
@@ -1993,7 +1988,7 @@ enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit)
 	if (action == commit_show &&
 	    !revs->show_all &&
 	    revs->prune && revs->dense && want_ancestry(revs)) {
-		if (rewrite_parents(revs, commit) < 0)
+		if (rewrite_parents(revs, commit, rewrite_one) < 0)
 			return commit_error;
 	}
 	return action;
diff --git a/revision.h b/revision.h
index 2627ec4..48222f6 100644
--- a/revision.h
+++ b/revision.h
@@ -199,4 +199,14 @@ enum commit_action {
 extern enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit);
 extern enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit);
 
+enum rewrite_result {
+	rewrite_one_ok,
+	rewrite_one_noparents,
+	rewrite_one_error
+};
+
+typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
+
+extern int rewrite_parents(struct rev_info *revs, struct commit *commit,
+	rewrite_parent_fn_t rewrite_parent);
 #endif
-- 
1.7.2.20.g388bbb
Previous: Thomas RastNext: Bo Yang
Message 22 of 28 in “Reroll the line log series”
  1. 00/18 Reroll the line log seriesBo Yang, Aug 5, 2010
  2. 01/18 parse-options: enhance STOP_AT_NON_OPTIONBo Yang, Aug 5, 2010
  3. 02/18 parse-options: add two helper functionsBo Yang, Aug 5, 2010
  4. Thomas RastAug 5, 2010
  5. 03/18 Add the basic data structure for line level historyBo Yang, Aug 5, 2010
  6. Thomas RastAug 5, 2010
  7. Junio C HamanoAug 6, 2010
  8. 04/18 Refactor parse_locBo Yang, Aug 5, 2010
  9. 05/18 Parse the -L optionsBo Yang, Aug 5, 2010
  10. Junio C HamanoAug 6, 2010
  11. Bo YangAug 10, 2010
  12. 06/18 Export three functions from diff.cBo Yang, Aug 5, 2010
  13. 07/18 Add range clone functionsBo Yang, Aug 5, 2010
  14. 08/18 map/take range to the parent of commitsBo Yang, Aug 5, 2010
  15. Thomas RastAug 5, 2010
  16. 09/18 Print the line logBo Yang, Aug 5, 2010
  17. 10/18 Hook line history into cmd_log, ensuring a topo-ordered walkBo Yang, Aug 5, 2010
  18. 11/18 Add tests for line history browserBo Yang, Aug 5, 2010
  19. Thomas RastAug 5, 2010
  20. Bo YangAug 6, 2010
  21. Thomas RastAug 6, 2010
  22. 12/18 Make rewrite_parents public to other part of gitBo Yang, Aug 5, 2010
  23. 13/18 Make graph_next_line external to other part of gitBo Yang, Aug 5, 2010
  24. 14/18 Add parent rewriting to line history browserBo Yang, Aug 5, 2010
  25. 15/18 Add --graph prefix before line history outputBo Yang, Aug 5, 2010
  26. 16/18 Add --full-line-diff optionBo Yang, Aug 5, 2010
  27. 17/18 Add test cases for '--graph' of line level logBo Yang, Aug 5, 2010
  28. 18/18 Document line history browserBo Yang, Aug 5, 2010

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