checkout: prevent losing staged changes with --merge

diff --git a/tree-walk.h b/tree-walk.h
index 97a7d6957e002e854d3b93831902776c994b6208..82251718666eb5dceb33d6140e86de5a627baab1 100644 (file)
--- a/tree-walk.h
+++ b/tree-walk.h
@@ -1,9 +1,12 @@
 #ifndef TREE_WALK_H
 #define TREE_WALK_H
 
+#include "cache.h"
+
 struct name_entry {
-       const struct object_id *oid;
+       struct object_id oid;
        const char *path;
+       int pathlen;
        unsigned int mode;
 };
 
@@ -17,46 +20,38 @@ static inline const struct object_id *tree_entry_extract(struct tree_desc *desc,
 {
        *pathp = desc->entry.path;
        *modep = desc->entry.mode;
-       return desc->entry.oid;
+       return &desc->entry.oid;
 }
 
 static inline int tree_entry_len(const struct name_entry *ne)
 {
-       return (const char *)ne->oid - ne->path - 1;
+       return ne->pathlen;
 }
 
+/*
+ * The _gently versions of these functions warn and return false on a
+ * corrupt tree entry rather than dying,
+ */
+
 void update_tree_entry(struct tree_desc *);
+int update_tree_entry_gently(struct tree_desc *);
 void init_tree_desc(struct tree_desc *desc, const void *buf, unsigned long size);
+int init_tree_desc_gently(struct tree_desc *desc, const void *buf, unsigned long size);
 
 /*
  * Helper function that does both tree_entry_extract() and update_tree_entry()
  * and returns true for success
  */
 int tree_entry(struct tree_desc *, struct name_entry *);
+int tree_entry_gently(struct tree_desc *, struct name_entry *);
 
-void *fill_tree_descriptor(struct tree_desc *desc, const unsigned char *sha1);
+void *fill_tree_descriptor(struct tree_desc *desc, const struct object_id *oid);
 
 struct traverse_info;
 typedef int (*traverse_callback_t)(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *);
-int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info);
-
-enum follow_symlinks_result {
-       FOUND = 0, /* This includes out-of-tree links */
-       MISSING_OBJECT = -1, /* The initial symlink is missing */
-       DANGLING_SYMLINK = -2, /*
-                               * The initial symlink is there, but
-                               * (transitively) points to a missing
-                               * in-tree file
-                               */
-       SYMLINK_LOOP = -3,
-       NOT_DIR = -4, /*
-                      * Somewhere along the symlink chain, a path is
-                      * requested which contains a file as a
-                      * non-final element.
-                      */
-};
+int traverse_trees(struct index_state *istate, int n, struct tree_desc *t, struct traverse_info *info);
 
-enum follow_symlinks_result get_tree_entry_follow_symlinks(unsigned char *tree_sha1, const char *name, unsigned char *result, struct strbuf *result_path, unsigned *mode);
+enum get_oid_result get_tree_entry_follow_symlinks(struct object_id *tree_oid, const char *name, struct object_id *result, struct strbuf *result_path, unsigned *mode);
 
 struct traverse_info {
        const char *traverse_path;
@@ -71,7 +66,7 @@ struct traverse_info {
        int show_all_errors;
 };
 
-int get_tree_entry(const unsigned char *, const char *, unsigned char *, unsigned *);
+int get_tree_entry(const struct object_id *, const char *, struct object_id *, unsigned *);
 extern char *make_traverse_path(char *path, const struct traverse_info *info, const struct name_entry *n);
 extern void setup_traverse_info(struct traverse_info *info, const char *base);
 
@@ -88,8 +83,9 @@ enum interesting {
        all_entries_interesting = 2 /* yes, and all subsequent entries will be */
 };
 
-extern enum interesting tree_entry_interesting(const struct name_entry *,
-                                              struct strbuf *, int,
-                                              const struct pathspec *ps);
+enum interesting tree_entry_interesting(struct index_state *istate,
+                                       const struct name_entry *,
+                                       struct strbuf *, int,
+                                       const struct pathspec *ps);
 
 #endif