Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
diff.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++-----------------
1 file changed, 46 insertions(+), 17 deletions(-)
diff --git a/diff.c b/diff.c
index bc78a216ab..7c92675f6f 100644
--- a/diff.c
+++ b/diff.c
@@ -560,6 +560,11 @@ static void emit_line(struct diff_options *o, const char *set, const char *reset
}
enum diff_symbol {
+ DIFF_SYMBOL_BINARY_DIFF_HEADER,
+ DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA,
+ DIFF_SYMBOL_BINARY_DIFF_HEADER_LITERAL,
+ DIFF_SYMBOL_BINARY_DIFF_BODY,
+ DIFF_SYMBOL_BINARY_DIFF_FOOTER,
DIFF_SYMBOL_SUBMODULE_ADD,
DIFF_SYMBOL_SUBMODULE_DEL,
DIFF_SYMBOL_SUBMODULE_UNTRACKED,
@@ -634,6 +639,7 @@ static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s,
case DIFF_SYMBOL_SUBMODULE_HEADER:
case DIFF_SYMBOL_SUBMODULE_ERROR:
case DIFF_SYMBOL_SUBMODULE_PIPETHROUGH:
+ case DIFF_SYMBOL_BINARY_DIFF_BODY:
case DIFF_SYMBOL_CONTEXT_FRAGINFO:
emit_line(o, "", "", line, len);
break;
@@ -705,6 +711,19 @@ static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s,
case DIFF_SYMBOL_HEADER:
fprintf(o->file, "%s", line);
break;
+ case DIFF_SYMBOL_BINARY_DIFF_HEADER:
+ fprintf(o->file, "%sGIT binary patch\n", diff_line_prefix(o));
+ break;
+ case DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA:
+ fprintf(o->file, "%sdelta %s\n", diff_line_prefix(o), line);
+ break;
+ case DIFF_SYMBOL_BINARY_DIFF_HEADER_LITERAL:
+ fprintf(o->file, "%sliteral %s\n", diff_line_prefix(o), line);
+ break;
+ case DIFF_SYMBOL_BINARY_DIFF_FOOTER:
+ fputs(diff_line_prefix(o), o->file);
+ fputc('\n', o->file);
+ break;
case DIFF_SYMBOL_REWRITE_DIFF:
fraginfo = diff_get_color(o->use_color, DIFF_FRAGINFO);
reset = diff_get_color_opt(o, DIFF_RESET);
@@ -2390,8 +2409,8 @@ static unsigned char *deflate_it(char *data,
return deflated;
}
-static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two,
- const char *prefix)
+static void emit_binary_diff_body(struct diff_options *o,
+ mmfile_t *one, mmfile_t *two)
{
void *cp;
void *delta;
@@ -2420,13 +2439,18 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two,
}
if (delta && delta_size < deflate_size) {
- fprintf(file, "%sdelta %lu\n", prefix, orig_size);
+ char *s = xstrfmt("%lu", orig_size);
+ emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA,
+ s, strlen(s), 0);
+ free(s);
free(deflated);
data = delta;
data_size = delta_size;
- }
- else {
- fprintf(file, "%sliteral %lu\n", prefix, two->size);
+ } else {
+ char *s = xstrfmt("%lu", two->size);
+ emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER_LITERAL,
+ s, strlen(s), 0);
+ free(s);
free(delta);
data = deflated;
data_size = deflate_size;
@@ -2435,8 +2459,9 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two,
/* emit data encoded in base85 */
cp = data;
while (data_size) {
+ int len;
int bytes = (52 < data_size) ? 52 : data_size;
- char line[70];
+ char line[71];
data_size -= bytes;
if (bytes <= 26)
line[0] = bytes + 'A' - 1;
@@ -2444,20 +2469,24 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two,
line[0] = bytes - 26 + 'a' - 1;
encode_85(line + 1, cp, bytes);
cp = (char *) cp + bytes;
- fprintf(file, "%s", prefix);
- fputs(line, file);
- fputc('\n', file);
+
+ len = strlen(line);
+ line[len++] = '\n';
+ line[len] = '\0';
+
+ emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_BODY,
+ line, len, 0);
}
- fprintf(file, "%s\n", prefix);
+ emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_FOOTER, NULL, 0, 0);
free(data);
}
-static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two,
- const char *prefix)
+static void emit_binary_diff(struct diff_options *o,
+ mmfile_t *one, mmfile_t *two)
{
- fprintf(file, "%sGIT binary patch\n", prefix);
- emit_binary_diff_body(file, one, two, prefix);
- emit_binary_diff_body(file, two, one, prefix);
+ emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER, NULL, 0, 0);
+ emit_binary_diff_body(o, one, two);
+ emit_binary_diff_body(o, two, one);
}
int diff_filespec_is_binary(struct diff_filespec *one)
@@ -2643,7 +2672,7 @@ static void builtin_diff(const char *name_a,
emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, header.len, 0);
strbuf_reset(&header);
if (DIFF_OPT_TST(o, BINARY))
- emit_binary_diff(o->file, &mf1, &mf2, line_prefix);
+ emit_binary_diff(o, &mf1, &mf2);
else {
strbuf_addf(&sb, "%sBinary files %s and %s differ\n",
diff_line_prefix(o), lbl[0], lbl[1]);
--
2.12.2.575.gb14f27f917
