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List: git
Subject: [PATCH 7/7] diff --highlight-words: actually highlight words
From: Nguyễn Thái Ngọc Duy <pclouds () gmail ! com>
Date: 2015-12-31 12:37:37
Message-ID: 1451565457-18756-8-git-send-email-pclouds () gmail ! com
[Download RAW message or body]
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
diff.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 50 insertions(+), 3 deletions(-)
diff --git a/diff.c b/diff.c
index 47d22e3..68a847d 100644
--- a/diff.c
+++ b/diff.c
@@ -457,6 +457,50 @@ struct tagged_pointer {
enum pointer_tag tag;
};
+static void emit_tagged_line(struct diff_options *o, const char *set,
+ const char *line, int len,
+ struct tagged_pointer *begin,
+ struct tagged_pointer *end)
+{
+ struct tagged_pointer *current;
+ FILE *file = o->file;
+ const char *last_color = set;
+
+ for (current = begin; current < end; current++) {
+ struct tagged_pointer *next = current + 1;
+ const char *start = current->str;
+ const char *end = next->str;
+ const char *color = NULL;
+
+ switch (current->tag) {
+ case TAG_END_WORD:
+ color = set;
+ break;
+
+ case TAG_BEGIN_OLD_WORD:
+ color = GIT_COLOR_BG_RED GIT_COLOR_YELLOW;
+ break;
+
+ case TAG_BEGIN_NEW_WORD:
+ color = GIT_COLOR_BG_GREEN GIT_COLOR_BLUE;
+ break;
+
+ default:
+ break;
+ }
+
+ if (color && color != last_color) {
+ if (color == set)
+ fputs(GIT_COLOR_RESET, file);
+ fputs(color, file);
+ last_color = color;
+ }
+ while (end > start && end[-1] == '\n')
+ end--;
+ fwrite(start, end - start, 1, file);
+ }
+}
+
static void emit_line_0(struct diff_options *o, const char *set, const char *reset,
int first, const char *line, int len,
struct tagged_pointer *begin,
@@ -487,7 +531,10 @@ static void emit_line_0(struct diff_options *o, const char *set, const char *res
fputs(set, file);
if (!nofirst)
fputc(first, file);
- fwrite(line, len, 1, file);
+ if (begin)
+ emit_tagged_line(o, set, line, len, begin, end);
+ else
+ fwrite(line, len, 1, file);
fputs(reset, file);
}
if (has_trailing_carriage_return)
@@ -531,7 +578,7 @@ static void emit_line_checked(const char *reset,
ws = NULL;
}
- if (!ws)
+ if (!ws || begin)
emit_line_0(ecbdata->opt, set, reset, sign,
line, len, begin, end);
else if (sign == '+' && new_blank_line_at_eof(ecbdata, line, len))
@@ -1312,7 +1359,7 @@ static void diff_words_flush_unified(struct emit_callback *ecb,
emit_line_checked(reset, ecb, begin_line->str,
end_line->str - begin_line->str,
color, ws_error_highlight, sign,
- NULL, NULL);
+ begin_line, end_line);
}
b->mark_nr = 0;
}
--
2.3.0.rc1.137.g477eb31
--
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