Merge branch 'jn/vcs-svn-cleanup' into next

diff --git a/diff.c b/diff.c
index f84346b479a6f576c0a185629d110c185709c5c0..36c5f7fa5009826db23b6b5a9d2875ba3979188a 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -21,6 +21,7 @@
 #include "string-list.h"
 #include "argv-array.h"
 #include "graph.h"
+#include "packfile.h"
 
 #ifdef NO_FAST_WORKING_DIRECTORY
 #define FAST_WORKING_DIRECTORY 0
@@ -464,8 +465,6 @@ static struct diff_tempfile {
        struct tempfile tempfile;
 } diff_temp[2];
 
-typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len);
-
 struct emit_callback {
        int color_diff;
        unsigned ws_rule;
@@ -473,7 +472,6 @@ struct emit_callback {
        int blank_at_eof_in_postimage;
        int lno_in_preimage;
        int lno_in_postimage;
-       sane_truncate_fn truncate;
        const char **label_path;
        struct diff_words_data *diff_words;
        struct diff_options *opt;
@@ -858,6 +856,38 @@ static int shrink_potential_moved_blocks(struct moved_entry **pmb,
        return rp + 1;
 }
 
+/*
+ * If o->color_moved is COLOR_MOVED_PLAIN, this function does nothing.
+ *
+ * Otherwise, if the last block has fewer alphanumeric characters than
+ * COLOR_MOVED_MIN_ALNUM_COUNT, unset DIFF_SYMBOL_MOVED_LINE on all lines in
+ * that block.
+ *
+ * The last block consists of the (n - block_length)'th line up to but not
+ * including the nth line.
+ *
+ * NEEDSWORK: This uses the same heuristic as blame_entry_score() in blame.c.
+ * Think of a way to unify them.
+ */
+static void adjust_last_block(struct diff_options *o, int n, int block_length)
+{
+       int i, alnum_count = 0;
+       if (o->color_moved == COLOR_MOVED_PLAIN)
+               return;
+       for (i = 1; i < block_length + 1; i++) {
+               const char *c = o->emitted_symbols->buf[n - i].line;
+               for (; *c; c++) {
+                       if (!isalnum(*c))
+                               continue;
+                       alnum_count++;
+                       if (alnum_count >= COLOR_MOVED_MIN_ALNUM_COUNT)
+                               return;
+               }
+       }
+       for (i = 1; i < block_length + 1; i++)
+               o->emitted_symbols->buf[n - i].flags &= ~DIFF_SYMBOL_MOVED_LINE;
+}
+
 /* Find blocks of moved code, delegate actual coloring decision to helper */
 static void mark_color_as_moved(struct diff_options *o,
                                struct hashmap *add_lines,
@@ -893,20 +923,13 @@ static void mark_color_as_moved(struct diff_options *o,
                }
 
                if (!match) {
-                       if (block_length < COLOR_MOVED_MIN_BLOCK_LENGTH &&
-                           o->color_moved != COLOR_MOVED_PLAIN) {
-                               for (i = 0; i < block_length + 1; i++) {
-                                       l = &o->emitted_symbols->buf[n - i];
-                                       l->flags &= ~DIFF_SYMBOL_MOVED_LINE;
-                               }
-                       }
+                       adjust_last_block(o, n, block_length);
                        pmb_nr = 0;
                        block_length = 0;
                        continue;
                }
 
                l->flags |= DIFF_SYMBOL_MOVED_LINE;
-               block_length++;
 
                if (o->color_moved == COLOR_MOVED_PLAIN)
                        continue;
@@ -936,11 +959,17 @@ static void mark_color_as_moved(struct diff_options *o,
                        }
 
                        flipped_block = (flipped_block + 1) % 2;
+
+                       adjust_last_block(o, n, block_length);
+                       block_length = 0;
                }
 
+               block_length++;
+
                if (flipped_block)
                        l->flags |= DIFF_SYMBOL_MOVED_LINE_ALT;
        }
+       adjust_last_block(o, n, block_length);
 
        free(pmb);
 }
@@ -1968,8 +1997,6 @@ static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, u
        unsigned long allot;
        size_t l = len;
 
-       if (ecb->truncate)
-               return ecb->truncate(line, len);
        cp = line;
        allot = l;
        while (0 < l) {
@@ -3985,7 +4012,7 @@ static void diff_fill_oid_info(struct diff_filespec *one)
                        }
                        if (lstat(one->path, &st) < 0)
                                die_errno("stat '%s'", one->path);
-                       if (index_path(one->oid.hash, one->path, &st, 0))
+                       if (index_path(&one->oid, one->path, &st, 0))
                                die("cannot hash %s", one->path);
                }
        }