Don't dereference NULL upon lookup failure.

[git.git] / diff.h

diff --git a/diff.h b/diff.h
index a7ee6d8c87887b111ef84b95266e1ff43496e7c3..beccf85962b3f4cca9fa6b668fa904b59efbed52 100644 (file)
--- a/diff.h
+++ b/diff.h
@@ -43,32 +43,42 @@ typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
 
 #define DIFF_FORMAT_CALLBACK   0x1000
 
+#define DIFF_OPT_RECURSIVE           (1 <<  0)
+#define DIFF_OPT_TREE_IN_RECURSIVE   (1 <<  1)
+#define DIFF_OPT_BINARY              (1 <<  2)
+#define DIFF_OPT_TEXT                (1 <<  3)
+#define DIFF_OPT_FULL_INDEX          (1 <<  4)
+#define DIFF_OPT_SILENT_ON_REMOVE    (1 <<  5)
+#define DIFF_OPT_FIND_COPIES_HARDER  (1 <<  6)
+#define DIFF_OPT_FOLLOW_RENAMES      (1 <<  7)
+#define DIFF_OPT_COLOR_DIFF          (1 <<  8)
+#define DIFF_OPT_COLOR_DIFF_WORDS    (1 <<  9)
+#define DIFF_OPT_HAS_CHANGES         (1 << 10)
+#define DIFF_OPT_QUIET               (1 << 11)
+#define DIFF_OPT_NO_INDEX            (1 << 12)
+#define DIFF_OPT_ALLOW_EXTERNAL      (1 << 13)
+#define DIFF_OPT_EXIT_WITH_STATUS    (1 << 14)
+#define DIFF_OPT_REVERSE_DIFF        (1 << 15)
+#define DIFF_OPT_CHECK_FAILED        (1 << 16)
+#define DIFF_OPT_TST(opts, flag)    ((opts)->flags & DIFF_OPT_##flag)
+#define DIFF_OPT_SET(opts, flag)    ((opts)->flags |= DIFF_OPT_##flag)
+#define DIFF_OPT_CLR(opts, flag)    ((opts)->flags &= ~DIFF_OPT_##flag)
+
 struct diff_options {
        const char *filter;
        const char *orderfile;
        const char *pickaxe;
        const char *single_follow;
-       unsigned recursive:1,
-                tree_in_recursive:1,
-                binary:1,
-                text:1,
-                full_index:1,
-                silent_on_remove:1,
-                find_copies_harder:1,
-                color_diff:1,
-                color_diff_words:1,
-                has_changes:1,
-                quiet:1,
-                allow_external:1,
-                exit_with_status:1;
+       const char *a_prefix, *b_prefix;
+       unsigned flags;
        int context;
        int break_opt;
        int detect_rename;
+       int skip_stat_unmatch;
        int line_termination;
        int output_format;
        int pickaxe_opts;
        int rename_score;
-       int reverse_diff;
        int rename_limit;
        int setup;
        int abbrev;
@@ -102,6 +112,9 @@ enum color_diff {
        DIFF_WHITESPACE = 7,
 };
 const char *diff_get_color(int diff_use_color, enum color_diff ix);
+#define diff_get_color_opt(o, ix) \
+       diff_get_color(DIFF_OPT_TST((o), COLOR_DIFF), ix)
+
 
 extern const char mime_boundary_leader[];
 
@@ -221,7 +234,11 @@ extern void diff_flush(struct diff_options*);
 
 extern const char *diff_unique_abbrev(const unsigned char *, int);
 
-extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
+/* do not report anything on removed paths */
+#define DIFF_SILENT_ON_REMOVED 01
+/* report racily-clean paths as modified */
+#define DIFF_RACY_IS_MODIFIED 02
+extern int run_diff_files(struct rev_info *revs, unsigned int option);
 extern int setup_diff_no_index(struct rev_info *revs,
                int argc, const char ** argv, int nongit, const char *prefix);
 extern int run_diff_files_cmd(struct rev_info *revs, int argc, const char **argv);
@@ -231,4 +248,6 @@ extern int run_diff_index(struct rev_info *revs, int cached);
 extern int do_diff_cache(const unsigned char *, struct diff_options *);
 extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
 
+extern int diff_result_code(struct diff_options *, int);
+
 #endif /* DIFF_H */