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authorJunio C Hamano <gitster@pobox.com>2010-06-18 18:16:57 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-06-18 18:16:57 (GMT)
commit98ad90fbab90a423ca835956d3121c60db2eb218 (patch)
tree8e030231c26a2e42ebf366cd58c318a34dd72724 /diff.c
parente09151281ded5e05ee64e67e5d20529953c23b65 (diff)
parent4297c0aeb5cc6b9c1c87d770c91e09ac2a837320 (diff)
downloadgit-98ad90fbab90a423ca835956d3121c60db2eb218.zip
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Merge branch 'by/diff-graph'
* by/diff-graph: Make --color-words work well with --graph graph.c: register a callback for graph output Emit a whole line in one go diff.c: Output the text graph padding before each diff line Output the graph columns at the end of the commit message Add a prefix output callback to diff output Conflicts: diff.c
Diffstat (limited to 'diff.c')
-rw-r--r--diff.c409
1 files changed, 312 insertions, 97 deletions
diff --git a/diff.c b/diff.c
index b53b6ec..c6b5fb3 100644
--- a/diff.c
+++ b/diff.c
@@ -199,8 +199,8 @@ struct emit_callback {
sane_truncate_fn truncate;
const char **label_path;
struct diff_words_data *diff_words;
+ struct diff_options *opt;
int *found_changesp;
- FILE *file;
struct strbuf *header;
};
@@ -287,11 +287,19 @@ static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2,
ecbdata->blank_at_eof_in_postimage = (at - l2) + 1;
}
-static void emit_line_0(FILE *file, const char *set, const char *reset,
+static void emit_line_0(struct diff_options *o, const char *set, const char *reset,
int first, const char *line, int len)
{
int has_trailing_newline, has_trailing_carriage_return;
int nofirst;
+ FILE *file = o->file;
+
+ if (o->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = o->output_prefix(o, o->output_prefix_data);
+ assert(msg);
+ fwrite(msg->buf, msg->len, 1, file);
+ }
if (len == 0) {
has_trailing_newline = (first == '\n');
@@ -321,10 +329,10 @@ static void emit_line_0(FILE *file, const char *set, const char *reset,
fputc('\n', file);
}
-static void emit_line(FILE *file, const char *set, const char *reset,
+static void emit_line(struct diff_options *o, const char *set, const char *reset,
const char *line, int len)
{
- emit_line_0(file, set, reset, line[0], line+1, len-1);
+ emit_line_0(o, set, reset, line[0], line+1, len-1);
}
static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line, int len)
@@ -346,15 +354,15 @@ static void emit_add_line(const char *reset,
const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW);
if (!*ws)
- emit_line_0(ecbdata->file, set, reset, '+', line, len);
+ emit_line_0(ecbdata->opt, set, reset, '+', line, len);
else if (new_blank_line_at_eof(ecbdata, line, len))
/* Blank line at EOF - paint '+' as well */
- emit_line_0(ecbdata->file, ws, reset, '+', line, len);
+ emit_line_0(ecbdata->opt, ws, reset, '+', line, len);
else {
/* Emit just the prefix, then the rest. */
- emit_line_0(ecbdata->file, set, reset, '+', "", 0);
+ emit_line_0(ecbdata->opt, set, reset, '+', "", 0);
ws_check_emit(line, len, ecbdata->ws_rule,
- ecbdata->file, set, reset, ws);
+ ecbdata->opt->file, set, reset, ws);
}
}
@@ -367,6 +375,9 @@ static void emit_hunk_header(struct emit_callback *ecbdata,
const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
static const char atat[2] = { '@', '@' };
const char *cp, *ep;
+ struct strbuf msgbuf = STRBUF_INIT;
+ int org_len = len;
+ int i = 1;
/*
* As a hunk header must begin with "@@ -<old>, +<new> @@",
@@ -375,23 +386,42 @@ static void emit_hunk_header(struct emit_callback *ecbdata,
if (len < 10 ||
memcmp(line, atat, 2) ||
!(ep = memmem(line + 2, len - 2, atat, 2))) {
- emit_line(ecbdata->file, plain, reset, line, len);
+ emit_line(ecbdata->opt, plain, reset, line, len);
return;
}
ep += 2; /* skip over @@ */
/* The hunk header in fraginfo color */
- emit_line(ecbdata->file, frag, reset, line, ep - line);
+ strbuf_add(&msgbuf, frag, strlen(frag));
+ strbuf_add(&msgbuf, line, ep - line);
+ strbuf_add(&msgbuf, reset, strlen(reset));
+
+ /*
+ * trailing "\r\n"
+ */
+ for ( ; i < 3; i++)
+ if (line[len - i] == '\r' || line[len - i] == '\n')
+ len--;
/* blank before the func header */
for (cp = ep; ep - line < len; ep++)
if (*ep != ' ' && *ep != '\t')
break;
- if (ep != cp)
- emit_line(ecbdata->file, plain, reset, cp, ep - cp);
+ if (ep != cp) {
+ strbuf_add(&msgbuf, plain, strlen(plain));
+ strbuf_add(&msgbuf, cp, ep - cp);
+ strbuf_add(&msgbuf, reset, strlen(reset));
+ }
+
+ if (ep < line + len) {
+ strbuf_add(&msgbuf, func, strlen(func));
+ strbuf_add(&msgbuf, ep, line + len - ep);
+ strbuf_add(&msgbuf, reset, strlen(reset));
+ }
- if (ep < line + len)
- emit_line(ecbdata->file, func, reset, ep, line + len - ep);
+ strbuf_add(&msgbuf, line + len, org_len - len);
+ emit_line(ecbdata->opt, "", "", msgbuf.buf, msgbuf.len);
+ strbuf_release(&msgbuf);
}
static struct diff_tempfile *claim_diff_tempfile(void) {
@@ -451,7 +481,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb,
len = endp ? (endp - data + 1) : size;
if (prefix != '+') {
ecb->lno_in_preimage++;
- emit_line_0(ecb->file, old, reset, '-',
+ emit_line_0(ecb->opt, old, reset, '-',
data, len);
} else {
ecb->lno_in_postimage++;
@@ -463,7 +493,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb,
if (!endp) {
const char *plain = diff_get_color(ecb->color_diff,
DIFF_PLAIN);
- emit_line_0(ecb->file, plain, reset, '\\',
+ emit_line_0(ecb->opt, plain, reset, '\\',
nneof, strlen(nneof));
}
}
@@ -487,6 +517,13 @@ static void emit_rewrite_diff(const char *name_a,
char *data_one, *data_two;
size_t size_one, size_two;
struct emit_callback ecbdata;
+ char *line_prefix = "";
+ struct strbuf *msgbuf;
+
+ if (o && o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
a_prefix = o->b_prefix;
@@ -513,7 +550,7 @@ static void emit_rewrite_diff(const char *name_a,
ecbdata.color_diff = color_diff;
ecbdata.found_changesp = &o->found_changes;
ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
- ecbdata.file = o->file;
+ ecbdata.opt = o;
if (ecbdata.ws_rule & WS_BLANK_AT_EOF) {
mmfile_t mf1, mf2;
mf1.ptr = (char *)data_one;
@@ -528,9 +565,10 @@ static void emit_rewrite_diff(const char *name_a,
lc_a = count_lines(data_one, size_one);
lc_b = count_lines(data_two, size_two);
fprintf(o->file,
- "%s--- %s%s%s\n%s+++ %s%s%s\n%s@@ -",
- metainfo, a_name.buf, name_a_tab, reset,
- metainfo, b_name.buf, name_b_tab, reset, fraginfo);
+ "%s%s--- %s%s%s\n%s%s+++ %s%s%s\n%s%s@@ -",
+ line_prefix, metainfo, a_name.buf, name_a_tab, reset,
+ line_prefix, metainfo, b_name.buf, name_b_tab, reset,
+ line_prefix, fraginfo);
print_line_count(o->file, lc_a);
fprintf(o->file, " +");
print_line_count(o->file, lc_b);
@@ -589,7 +627,8 @@ struct diff_words_style diff_words_styles[] = {
struct diff_words_data {
struct diff_words_buffer minus, plus;
const char *current_plus;
- FILE *file;
+ int last_minus;
+ struct diff_options *opt;
regex_t *word_regex;
enum diff_words_type type;
struct diff_words_style *style;
@@ -598,10 +637,15 @@ struct diff_words_data {
static int fn_out_diff_words_write_helper(FILE *fp,
struct diff_words_style_elem *st_el,
const char *newline,
- size_t count, const char *buf)
+ size_t count, const char *buf,
+ const char *line_prefix)
{
+ int print = 0;
+
while (count) {
char *p = memchr(buf, '\n', count);
+ if (print)
+ fputs(line_prefix, fp);
if (p != buf) {
if (st_el->color && fputs(st_el->color, fp) < 0)
return -1;
@@ -619,21 +663,74 @@ static int fn_out_diff_words_write_helper(FILE *fp,
return -1;
count -= p + 1 - buf;
buf = p + 1;
+ print = 1;
}
return 0;
}
+/*
+ * '--color-words' algorithm can be described as:
+ *
+ * 1. collect a the minus/plus lines of a diff hunk, divided into
+ * minus-lines and plus-lines;
+ *
+ * 2. break both minus-lines and plus-lines into words and
+ * place them into two mmfile_t with one word for each line;
+ *
+ * 3. use xdiff to run diff on the two mmfile_t to get the words level diff;
+ *
+ * And for the common parts of the both file, we output the plus side text.
+ * diff_words->current_plus is used to trace the current position of the plus file
+ * which printed. diff_words->last_minus is used to trace the last minus word
+ * printed.
+ *
+ * For '--graph' to work with '--color-words', we need to output the graph prefix
+ * on each line of color words output. Generally, there are two conditions on
+ * which we should output the prefix.
+ *
+ * 1. diff_words->last_minus == 0 &&
+ * diff_words->current_plus == diff_words->plus.text.ptr
+ *
+ * that is: the plus text must start as a new line, and if there is no minus
+ * word printed, a graph prefix must be printed.
+ *
+ * 2. diff_words->current_plus > diff_words->plus.text.ptr &&
+ * *(diff_words->current_plus - 1) == '\n'
+ *
+ * that is: a graph prefix must be printed following a '\n'
+ */
+static int color_words_output_graph_prefix(struct diff_words_data *diff_words)
+{
+ if ((diff_words->last_minus == 0 &&
+ diff_words->current_plus == diff_words->plus.text.ptr) ||
+ (diff_words->current_plus > diff_words->plus.text.ptr &&
+ *(diff_words->current_plus - 1) == '\n')) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
{
struct diff_words_data *diff_words = priv;
struct diff_words_style *style = diff_words->style;
int minus_first, minus_len, plus_first, plus_len;
const char *minus_begin, *minus_end, *plus_begin, *plus_end;
+ struct diff_options *opt = diff_words->opt;
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
if (line[0] != '@' || parse_hunk_header(line, len,
&minus_first, &minus_len, &plus_first, &plus_len))
return;
+ assert(opt);
+ if (opt->output_prefix) {
+ msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
/* POSIX requires that first be decremented by one if len == 0... */
if (minus_len) {
minus_begin = diff_words->minus.orig[minus_first].begin;
@@ -649,21 +746,32 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
} else
plus_begin = plus_end = diff_words->plus.orig[plus_first].end;
- if (diff_words->current_plus != plus_begin)
- fn_out_diff_words_write_helper(diff_words->file,
+ if (color_words_output_graph_prefix(diff_words)) {
+ fputs(line_prefix, diff_words->opt->file);
+ }
+ if (diff_words->current_plus != plus_begin) {
+ fn_out_diff_words_write_helper(diff_words->opt->file,
&style->ctx, style->newline,
plus_begin - diff_words->current_plus,
- diff_words->current_plus);
- if (minus_begin != minus_end)
- fn_out_diff_words_write_helper(diff_words->file,
+ diff_words->current_plus, line_prefix);
+ if (*(plus_begin - 1) == '\n')
+ fputs(line_prefix, diff_words->opt->file);
+ }
+ if (minus_begin != minus_end) {
+ fn_out_diff_words_write_helper(diff_words->opt->file,
&style->old, style->newline,
- minus_end - minus_begin, minus_begin);
- if (plus_begin != plus_end)
- fn_out_diff_words_write_helper(diff_words->file,
+ minus_end - minus_begin, minus_begin,
+ line_prefix);
+ }
+ if (plus_begin != plus_end) {
+ fn_out_diff_words_write_helper(diff_words->opt->file,
&style->new, style->newline,
- plus_end - plus_begin, plus_begin);
+ plus_end - plus_begin, plus_begin,
+ line_prefix);
+ }
diff_words->current_plus = plus_end;
+ diff_words->last_minus = minus_first;
}
/* This function starts looking at *begin, and returns 0 iff a word was found. */
@@ -744,16 +852,29 @@ static void diff_words_show(struct diff_words_data *diff_words)
mmfile_t minus, plus;
struct diff_words_style *style = diff_words->style;
+ struct diff_options *opt = diff_words->opt;
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ assert(opt);
+ if (opt->output_prefix) {
+ msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
/* special case: only removal */
if (!diff_words->plus.text.size) {
- fn_out_diff_words_write_helper(diff_words->file,
+ fputs(line_prefix, diff_words->opt->file);
+ fn_out_diff_words_write_helper(diff_words->opt->file,
&style->old, style->newline,
- diff_words->minus.text.size, diff_words->minus.text.ptr);
+ diff_words->minus.text.size,
+ diff_words->minus.text.ptr, line_prefix);
diff_words->minus.text.size = 0;
return;
}
diff_words->current_plus = diff_words->plus.text.ptr;
+ diff_words->last_minus = 0;
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
@@ -767,11 +888,15 @@ static void diff_words_show(struct diff_words_data *diff_words)
free(minus.ptr);
free(plus.ptr);
if (diff_words->current_plus != diff_words->plus.text.ptr +
- diff_words->plus.text.size)
- fn_out_diff_words_write_helper(diff_words->file,
+ diff_words->plus.text.size) {
+ if (color_words_output_graph_prefix(diff_words))
+ fputs(line_prefix, diff_words->opt->file);
+ fn_out_diff_words_write_helper(diff_words->opt->file,
&style->ctx, style->newline,
diff_words->plus.text.ptr + diff_words->plus.text.size
- - diff_words->current_plus, diff_words->current_plus);
+ - diff_words->current_plus, diff_words->current_plus,
+ line_prefix);
+ }
diff_words->minus.text.size = diff_words->plus.text.size = 0;
}
@@ -843,9 +968,17 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
const char *meta = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN);
const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
+ struct diff_options *o = ecbdata->opt;
+ char *line_prefix = "";
+ struct strbuf *msgbuf;
+
+ if (o && o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
if (ecbdata->header) {
- fprintf(ecbdata->file, "%s", ecbdata->header->buf);
+ fprintf(ecbdata->opt->file, "%s", ecbdata->header->buf);
strbuf_reset(ecbdata->header);
ecbdata->header = NULL;
}
@@ -857,10 +990,10 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
name_a_tab = strchr(ecbdata->label_path[0], ' ') ? "\t" : "";
name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : "";
- fprintf(ecbdata->file, "%s--- %s%s%s\n",
- meta, ecbdata->label_path[0], reset, name_a_tab);
- fprintf(ecbdata->file, "%s+++ %s%s%s\n",
- meta, ecbdata->label_path[1], reset, name_b_tab);
+ fprintf(ecbdata->opt->file, "%s%s--- %s%s%s\n",
+ line_prefix, meta, ecbdata->label_path[0], reset, name_a_tab);
+ fprintf(ecbdata->opt->file, "%s%s+++ %s%s%s\n",
+ line_prefix, meta, ecbdata->label_path[1], reset, name_b_tab);
ecbdata->label_path[0] = ecbdata->label_path[1] = NULL;
}
@@ -877,15 +1010,15 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
find_lno(line, ecbdata);
emit_hunk_header(ecbdata, line, len);
if (line[len-1] != '\n')
- putc('\n', ecbdata->file);
+ putc('\n', ecbdata->opt->file);
return;
}
if (len < 1) {
- emit_line(ecbdata->file, reset, reset, line, len);
+ emit_line(ecbdata->opt, reset, reset, line, len);
if (ecbdata->diff_words
&& ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN)
- fputs("~\n", ecbdata->file);
+ fputs("~\n", ecbdata->opt->file);
return;
}
@@ -901,11 +1034,11 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
}
diff_words_flush(ecbdata);
if (ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN) {
- emit_line(ecbdata->file, plain, reset, line, len);
- fputs("~\n", ecbdata->file);
+ emit_line(ecbdata->opt, plain, reset, line, len);
+ fputs("~\n", ecbdata->opt->file);
} else {
/* don't print the prefix character */
- emit_line(ecbdata->file, plain, reset, line+1, len-1);
+ emit_line(ecbdata->opt, plain, reset, line+1, len-1);
}
return;
}
@@ -917,7 +1050,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
ecbdata->lno_in_preimage++;
if (line[0] == ' ')
ecbdata->lno_in_postimage++;
- emit_line(ecbdata->file, color, reset, line, len);
+ emit_line(ecbdata->opt, color, reset, line, len);
} else {
ecbdata->lno_in_postimage++;
emit_add_line(reset, ecbdata, line + 1, len - 1);
@@ -1097,10 +1230,17 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
int total_files = data->nr;
int width, name_width;
const char *reset, *set, *add_c, *del_c;
+ const char *line_prefix = "";
+ struct strbuf *msg = NULL;
if (data->nr == 0)
return;
+ if (options->output_prefix) {
+ msg = options->output_prefix(options, options->output_prefix_data);
+ line_prefix = msg->buf;
+ }
+
width = options->stat_width ? options->stat_width : 80;
name_width = options->stat_name_width ? options->stat_name_width : 50;
@@ -1170,6 +1310,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
}
if (data->files[i]->is_binary) {
+ fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
fprintf(options->file, " Bin ");
fprintf(options->file, "%s%"PRIuMAX"%s",
@@ -1182,6 +1323,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
continue;
}
else if (data->files[i]->is_unmerged) {
+ fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
fprintf(options->file, " Unmerged\n");
continue;
@@ -1204,6 +1346,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
add = scale_linear(add, width, max_change);
del = scale_linear(del, width, max_change);
}
+ fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
fprintf(options->file, "%5"PRIuMAX"%s", added + deleted,
added + deleted ? " " : "");
@@ -1211,6 +1354,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
show_graph(options->file, '-', del, del_c, reset);
fprintf(options->file, "\n");
}
+ fprintf(options->file, "%s", line_prefix);
fprintf(options->file,
" %d files changed, %d insertions(+), %d deletions(-)\n",
total_files, adds, dels);
@@ -1237,6 +1381,12 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option
}
}
}
+ if (options->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = options->output_prefix(options,
+ options->output_prefix_data);
+ fprintf(options->file, "%s", msg->buf);
+ }
fprintf(options->file, " %d files changed, %d insertions(+), %d deletions(-)\n",
total_files, adds, dels);
}
@@ -1251,6 +1401,13 @@ static void show_numstat(struct diffstat_t *data, struct diff_options *options)
for (i = 0; i < data->nr; i++) {
struct diffstat_file *file = data->files[i];
+ if (options->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = options->output_prefix(options,
+ options->output_prefix_data);
+ fprintf(options->file, "%s", msg->buf);
+ }
+
if (file->is_binary)
fprintf(options->file, "-\t-\t");
else
@@ -1286,10 +1443,18 @@ struct dirstat_dir {
int alloc, nr, percent, cumulative;
};
-static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long changed, const char *base, int baselen)
+static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
+ unsigned long changed, const char *base, int baselen)
{
unsigned long this_dir = 0;
unsigned int sources = 0;
+ const char *line_prefix = "";
+ struct strbuf *msg = NULL;
+
+ if (opt->output_prefix) {
+ msg = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = msg->buf;
+ }
while (dir->nr) {
struct dirstat_file *f = dir->files;
@@ -1304,7 +1469,7 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch
slash = strchr(f->name + baselen, '/');
if (slash) {
int newbaselen = slash + 1 - f->name;
- this = gather_dirstat(file, dir, changed, f->name, newbaselen);
+ this = gather_dirstat(opt, dir, changed, f->name, newbaselen);
sources++;
} else {
this = f->changed;
@@ -1326,7 +1491,8 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch
if (permille) {
int percent = permille / 10;
if (percent >= dir->percent) {
- fprintf(file, "%4d.%01d%% %.*s\n", percent, permille % 10, baselen, base);
+ fprintf(opt->file, "%s%4d.%01d%% %.*s\n", line_prefix,
+ percent, permille % 10, baselen, base);
if (!dir->cumulative)
return 0;
}
@@ -1406,7 +1572,7 @@ static void show_dirstat(struct diff_options *options)
/* Show all directories with more than x% of the changes */
qsort(dir.files, dir.nr, sizeof(dir.files[0]), dirstat_compare);
- gather_dirstat(options->file, &dir, changed, "", 0);
+ gather_dirstat(options, &dir, changed, "", 0);
}
static void free_diffstat_info(struct diffstat_t *diffstat)
@@ -1464,6 +1630,15 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len)
const char *reset = diff_get_color(color_diff, DIFF_RESET);
const char *set = diff_get_color(color_diff, DIFF_FILE_NEW);
char *err;
+ char *line_prefix = "";
+ struct strbuf *msgbuf;
+
+ assert(data->o);
+ if (data->o->output_prefix) {
+ msgbuf = data->o->output_prefix(data->o,
+ data->o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
if (line[0] == '+') {
unsigned bad;
@@ -1471,18 +1646,18 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len)
if (is_conflict_marker(line + 1, marker_size, len - 1)) {
data->status |= 1;
fprintf(data->o->file,
- "%s:%d: leftover conflict marker\n",
- data->filename, data->lineno);
+ "%s%s:%d: leftover conflict marker\n",
+ line_prefix, data->filename, data->lineno);
}
bad = ws_check(line + 1, len - 1, data->ws_rule);
if (!bad)
return;
data->status |= bad;
err = whitespace_error_string(bad);
- fprintf(data->o->file, "%s:%d: %s.\n",
- data->filename, data->lineno, err);
+ fprintf(data->o->file, "%s%s:%d: %s.\n",
+ line_prefix, data->filename, data->lineno, err);
free(err);
- emit_line(data->o->file, set, reset, line, 1);
+ emit_line(data->o, set, reset, line, 1);
ws_check_emit(line + 1, len - 1, data->ws_rule,
data->o->file, set, reset, ws);
} else if (line[0] == ' ') {
@@ -1520,7 +1695,7 @@ static unsigned char *deflate_it(char *data,
return deflated;
}
-static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two)
+static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
{
void *cp;
void *delta;
@@ -1549,13 +1724,13 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two)
}
if (delta && delta_size < deflate_size) {
- fprintf(file, "delta %lu\n", orig_size);
+ fprintf(file, "%sdelta %lu\n", prefix, orig_size);
free(deflated);
data = delta;
data_size = delta_size;
}
else {
- fprintf(file, "literal %lu\n", two->size);
+ fprintf(file, "%sliteral %lu\n", prefix, two->size);
free(delta);
data = deflated;
data_size = deflate_size;
@@ -1573,18 +1748,19 @@ 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);
}
- fprintf(file, "\n");
+ fprintf(file, "%s\n", prefix);
free(data);
}
-static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two)
+static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
{
- fprintf(file, "GIT binary patch\n");
- emit_binary_diff_body(file, one, two);
- emit_binary_diff_body(file, two, one);
+ fprintf(file, "%sGIT binary patch\n", prefix);
+ emit_binary_diff_body(file, one, two, prefix);
+ emit_binary_diff_body(file, two, one, prefix);
}
static void diff_filespec_load_driver(struct diff_filespec *one)
@@ -1673,6 +1849,13 @@ static void builtin_diff(const char *name_a,
struct userdiff_driver *textconv_one = NULL;
struct userdiff_driver *textconv_two = NULL;
struct strbuf header = STRBUF_INIT;
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ if (o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
(!one->mode || S_ISGITLINK(one->mode)) &&
@@ -1707,22 +1890,22 @@ static void builtin_diff(const char *name_a,
b_two = quote_two(b_prefix, name_b + (*name_b == '/'));
lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null";
lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null";
- strbuf_addf(&header, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset);
+ strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, set, a_one, b_two, reset);
if (lbl[0][0] == '/') {
/* /dev/null */
- strbuf_addf(&header, "%snew file mode %06o%s\n", set, two->mode, reset);
+ strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
}
else if (lbl[1][0] == '/') {
- strbuf_addf(&header, "%sdeleted file mode %06o%s\n", set, one->mode, reset);
+ strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
}
else {
if (one->mode != two->mode) {
- strbuf_addf(&header, "%sold mode %06o%s\n", set, one->mode, reset);
- strbuf_addf(&header, "%snew mode %06o%s\n", set, two->mode, reset);
+ strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, set, one->mode, reset);
+ strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, set, two->mode, reset);
}
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
@@ -1757,10 +1940,10 @@ static void builtin_diff(const char *name_a,
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
if (DIFF_OPT_TST(o, BINARY))
- emit_binary_diff(o->file, &mf1, &mf2);
+ emit_binary_diff(o->file, &mf1, &mf2, line_prefix);
else
- fprintf(o->file, "Binary files %s and %s differ\n",
- lbl[0], lbl[1]);
+ fprintf(o->file, "%sBinary files %s and %s differ\n",
+ line_prefix, lbl[0], lbl[1]);
o->found_changes = 1;
}
else {
@@ -1792,7 +1975,7 @@ static void builtin_diff(const char *name_a,
ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
check_blank_at_eof(&mf1, &mf2, &ecbdata);
- ecbdata.file = o->file;
+ ecbdata.opt = o;
ecbdata.header = header.len ? &header : NULL;
xpp.flags = o->xdl_opts;
xecfg.ctxlen = o->context;
@@ -1811,8 +1994,8 @@ static void builtin_diff(const char *name_a,
ecbdata.diff_words =
xcalloc(1, sizeof(struct diff_words_data));
- ecbdata.diff_words->file = o->file;
ecbdata.diff_words->type = o->word_diff;
+ ecbdata.diff_words->opt = o;
if (!o->word_regex)
o->word_regex = userdiff_word_regex(one);
if (!o->word_regex)
@@ -2389,30 +2572,41 @@ static void fill_metainfo(struct strbuf *msg,
{
const char *set = diff_get_color(use_color, DIFF_METAINFO);
const char *reset = diff_get_color(use_color, DIFF_RESET);
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ if (o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
strbuf_init(msg, PATH_MAX * 2 + 300);
switch (p->status) {
case DIFF_STATUS_COPIED:
- strbuf_addf(msg, "%ssimilarity index %d%%",
- set, similarity_index(p));
- strbuf_addf(msg, "%s\n%scopy from ", reset, set);
+ strbuf_addf(msg, "%s%ssimilarity index %d%%",
+ line_prefix, set, similarity_index(p));
+ strbuf_addf(msg, "%s\n%s%scopy from ",
+ reset, line_prefix, set);
quote_c_style(name, msg, NULL, 0);
- strbuf_addf(msg, "%s\n%scopy to ", reset, set);
+ strbuf_addf(msg, "%s\n%s%scopy to ", reset, line_prefix, set);
quote_c_style(other, msg, NULL, 0);
strbuf_addf(msg, "%s\n", reset);
break;
case DIFF_STATUS_RENAMED:
- strbuf_addf(msg, "%ssimilarity index %d%%",
- set, similarity_index(p));
- strbuf_addf(msg, "%s\n%srename from ", reset, set);
+ strbuf_addf(msg, "%s%ssimilarity index %d%%",
+ line_prefix, set, similarity_index(p));
+ strbuf_addf(msg, "%s\n%s%srename from ",
+ reset, line_prefix, set);
quote_c_style(name, msg, NULL, 0);
- strbuf_addf(msg, "%s\n%srename to ", reset, set);
+ strbuf_addf(msg, "%s\n%s%srename to ",
+ reset, line_prefix, set);
quote_c_style(other, msg, NULL, 0);
strbuf_addf(msg, "%s\n", reset);
break;
case DIFF_STATUS_MODIFIED:
if (p->score) {
- strbuf_addf(msg, "%sdissimilarity index %d%%%s\n",
+ strbuf_addf(msg, "%s%sdissimilarity index %d%%%s\n",
+ line_prefix,
set, similarity_index(p), reset);
break;
}
@@ -2430,7 +2624,8 @@ static void fill_metainfo(struct strbuf *msg,
(!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
abbrev = 40;
}
- strbuf_addf(msg, "%sindex %s..", set,
+ strbuf_addf(msg, "%s%sindex %s..", set,
+ line_prefix,
find_unique_abbrev(one->sha1, abbrev));
strbuf_addstr(msg, find_unique_abbrev(two->sha1, abbrev));
if (one->mode == two->mode)
@@ -3140,6 +3335,11 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt)
{
int line_termination = opt->line_termination;
int inter_name_termination = line_termination ? '\t' : '\0';
+ if (opt->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = opt->output_prefix(opt, opt->output_prefix_data);
+ fprintf(opt->file, "%s", msg->buf);
+ }
if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) {
fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode,
@@ -3385,48 +3585,62 @@ static void show_file_mode_name(FILE *file, const char *newdelete, struct diff_f
}
-static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name)
+static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name,
+ const char *line_prefix)
{
if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) {
- fprintf(file, " mode change %06o => %06o%c", p->one->mode, p->two->mode,
- show_name ? ' ' : '\n');
+ fprintf(file, "%s mode change %06o => %06o%c", line_prefix, p->one->mode,
+ p->two->mode, show_name ? ' ' : '\n');
if (show_name) {
write_name_quoted(p->two->path, file, '\n');
}
}
}
-static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p)
+static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p,
+ const char *line_prefix)
{
char *names = pprint_rename(p->one->path, p->two->path);
fprintf(file, " %s %s (%d%%)\n", renamecopy, names, similarity_index(p));
free(names);
- show_mode_change(file, p, 0);
+ show_mode_change(file, p, 0, line_prefix);
}
-static void diff_summary(FILE *file, struct diff_filepair *p)
+static void diff_summary(struct diff_options *opt, struct diff_filepair *p)
{
+ FILE *file = opt->file;
+ char *line_prefix = "";
+
+ if (opt->output_prefix) {
+ struct strbuf *buf = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = buf->buf;
+ }
+
switch(p->status) {
case DIFF_STATUS_DELETED:
+ fputs(line_prefix, file);
show_file_mode_name(file, "delete", p->one);
break;
case DIFF_STATUS_ADDED:
+ fputs(line_prefix, file);
show_file_mode_name(file, "create", p->two);
break;
case DIFF_STATUS_COPIED:
- show_rename_copy(file, "copy", p);
+ fputs(line_prefix, file);
+ show_rename_copy(file, "copy", p, line_prefix);
break;
case DIFF_STATUS_RENAMED:
- show_rename_copy(file, "rename", p);
+ fputs(line_prefix, file);
+ show_rename_copy(file, "rename", p, line_prefix);
break;
default:
if (p->score) {
- fputs(" rewrite ", file);
+ fprintf(file, "%s rewrite ", line_prefix);
write_name_quoted(p->two->path, file, ' ');
fprintf(file, "(%d%%)\n", similarity_index(p));
}
- show_mode_change(file, p, !p->score);
+ show_mode_change(file, p, !p->score, line_prefix);
break;
}
}
@@ -3635,8 +3849,9 @@ void diff_flush(struct diff_options *options)
show_dirstat(options);
if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) {
- for (i = 0; i < q->nr; i++)
- diff_summary(options->file, q->queue[i]);
+ for (i = 0; i < q->nr; i++) {
+ diff_summary(options, q->queue[i]);
+ }
separator++;
}