[PATCH v2 07/10] resolve-undo.c: dump "REUC" extension as json

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 read-cache.c             |  2 +-
 resolve-undo.c           | 30 +++++++++++++++++-
 resolve-undo.h           |  4 ++-
 t/t3011-ls-files-json.sh | 20 ++++++++++++
 t/t3011/rerere (new)     | 66 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 119 insertions(+), 3 deletions(-)

diff --git a/read-cache.c b/read-cache.c
index a70df4b0a5..e5183636fc 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1719,7 +1719,7 @@ static int read_index_extension(struct index_state *istate,
 		istate->cache_tree = cache_tree_read(data, sz, istate->jw);
 		break;
 	case CACHE_EXT_RESOLVE_UNDO:
-		istate->resolve_undo = resolve_undo_read(data, sz);
+		istate->resolve_undo = resolve_undo_read(data, sz, istate->jw);
 		break;
 	case CACHE_EXT_LINK:
 		ret = read_link_extension(istate, data, sz);
diff --git a/resolve-undo.c b/resolve-undo.c
index 236320f179..68921e3dfe 100644
--- a/resolve-undo.c
+++ b/resolve-undo.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "dir.h"
+#include "json-writer.h"
 #include "resolve-undo.h"
 #include "string-list.h"
 
@@ -49,7 +50,30 @@ void resolve_undo_write(struct strbuf *sb, struct string_list *resolve_undo)
 	}
 }
 
-struct string_list *resolve_undo_read(const char *data, unsigned long size)
+static void dump_resolve_undo(struct json_writer *jw,
+			      const char *path,
+			      const struct resolve_undo_info *ui)
+{
+	int i;
+
+	if (!jw)
+		return;
+
+	jw_array_inline_begin_object(jw);
+	jw_object_string(jw, "path", path);
+
+	jw_object_inline_begin_array(jw, "stages");
+	for (i = 0; i < 3; i++) {
+		jw_array_inline_begin_object(jw);
+		jw_object_filemode(jw, "mode", ui->mode[i]);
+		jw_object_string(jw, "oid", oid_to_hex(&ui->oid[i]));
+		jw_end(jw);
+	}
+	jw_end(jw);
+}
+
+struct string_list *resolve_undo_read(const char *data, unsigned long size,
+				      struct json_writer *jw)
 {
 	struct string_list *resolve_undo;
 	size_t len;
@@ -59,6 +83,7 @@ struct string_list *resolve_undo_read(const char *data, unsigned long size)
 
 	resolve_undo = xcalloc(1, sizeof(*resolve_undo));
 	resolve_undo->strdup_strings = 1;
+	jw_object_inline_begin_array_gently(jw, "entries");
 
 	while (size) {
 		struct string_list_item *lost;
@@ -94,7 +119,10 @@ struct string_list *resolve_undo_read(const char *data, unsigned long size)
 			size -= rawsz;
 			data += rawsz;
 		}
+
+		dump_resolve_undo(jw, lost->string, ui);
 	}
+	jw_end_gently(jw);
 	return resolve_undo;
 
 error:
diff --git a/resolve-undo.h b/resolve-undo.h
index 2b3f0f901e..46b4e93a7e 100644
--- a/resolve-undo.h
+++ b/resolve-undo.h
@@ -3,6 +3,8 @@
 
 #include "cache.h"
 
+struct json_writer;
+
 struct resolve_undo_info {
 	unsigned int mode[3];
 	struct object_id oid[3];
@@ -10,7 +12,7 @@ struct resolve_undo_info {
 
 void record_resolve_undo(struct index_state *, struct cache_entry *);
 void resolve_undo_write(struct strbuf *, struct string_list *);
-struct string_list *resolve_undo_read(const char *, unsigned long);
+struct string_list *resolve_undo_read(const char *, unsigned long, struct json_writer *);
 void resolve_undo_clear_index(struct index_state *);
 int unmerge_index_entry_at(struct index_state *, int);
 void unmerge_index(struct index_state *, const struct pathspec *);
diff --git a/t/t3011-ls-files-json.sh b/t/t3011-ls-files-json.sh
index 25215f83ae..dc57138f5b 100755
--- a/t/t3011-ls-files-json.sh
+++ b/t/t3011-ls-files-json.sh
@@ -70,4 +70,24 @@ test_expect_success 'ls-files --json, fsmonitor extension ' '
 	)
 '
 
+test_expect_success 'ls-files --json, rerere extension' '
+	git init rerere &&
+	(
+		cd rerere &&
+		mkdir fi &&
+		test_commit initial fi/le first &&
+		git branch side &&
+		test_commit second fi/le second &&
+		git checkout side &&
+		test_commit third fi/le third &&
+		git checkout master &&
+		git config rerere.enabled true &&
+		test_must_fail git merge side &&
+		echo resolved >fi/le &&
+		git add fi/le &&
+		cp ../filter.sed . &&
+		compare_json rerere
+	)
+'
+
 test_done
diff --git a/t/t3011/rerere b/t/t3011/rerere
new file mode 100644
index 0000000000..a8ec4b16ee
--- /dev/null
+++ b/t/t3011/rerere
@@ -0,0 +1,66 @@
+{
+  "version": 2,
+  "oid": <string>,
+  "mtime_sec": <number>,
+  "mtime_nsec": <number>,
+  "entries": [
+    {
+      "id": 0,
+      "name": "fi/le",
+      "mode": "100644",
+      "flags": 0,
+      "oid": <string>,
+      "stat": {
+        "ctime_sec": <number>,
+        "ctime_nsec": <number>,
+        "mtime_sec": <number>,
+        "mtime_nsec": <number>,
+        "device": <number>,
+        "inode": <number>,
+        "uid": <number>,
+        "gid": <number>,
+        "size": 9
+      },
+      "file_offset": <number>
+    }
+  ],
+  "extensions": {
+    "TREE": {
+      "file_offset": <number>,
+      "ext_size": <number>,
+      "root": {
+        "oid": null,
+        "subdirs": [
+          {
+            "name": "fi",
+            "oid": null,
+            "subdirs": [
+            ]
+          }
+        ]
+      }
+    },
+    "REUC": {
+      "file_offset": <number>,
+      "ext_size": <number>,
+      "entries": [
+        {
+          "path": "fi/le",
+          "stages": [
+            {
+              "mode": "100644",
+              "oid": <string>
+            },
+            {
+              "mode": "100644",
+              "oid": <string>
+            },
+            {
+              "mode": "100644",
+              "oid": <string>
+            }
+          ]
+        }
+      ]
+    }
+  }
-- 
2.22.0.rc0.322.g2b0371e29a




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