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-rw-r--r--diff.c56
1 files changed, 27 insertions, 29 deletions
diff --git a/diff.c b/diff.c
index 7b4300a74a..135dec459a 100644
--- a/diff.c
+++ b/diff.c
@@ -20,6 +20,7 @@
static int diff_detect_rename_default;
static int diff_rename_limit_default = 200;
+static int diff_suppress_blank_empty;
int diff_use_color_default = -1;
static const char *external_diff_cmd_cfg;
int diff_auto_refresh_index = 1;
@@ -176,6 +177,12 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
return 0;
}
+ /* like GNU diff's --suppress-blank-empty option */
+ if (!strcmp(var, "diff.suppress-blank-empty")) {
+ diff_suppress_blank_empty = git_config_bool(var, value);
+ return 0;
+ }
+
if (!prefixcmp(var, "diff.")) {
const char *ep = strrchr(var, '.');
if (ep != var + 4) {
@@ -369,7 +376,6 @@ static void diff_words_append(char *line, unsigned long len,
}
struct diff_words_data {
- struct xdiff_emit_state xm;
struct diff_words_buffer minus, plus;
FILE *file;
};
@@ -459,11 +465,8 @@ static void diff_words_show(struct diff_words_data *diff_words)
xpp.flags = XDF_NEED_MINIMAL;
xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc;
- ecb.outf = xdiff_outf;
- ecb.priv = diff_words;
- diff_words->xm.consume = fn_out_diff_words_aux;
- xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
-
+ xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, diff_words,
+ &xpp, &xecfg, &ecb);
free(minus.ptr);
free(plus.ptr);
diff_words->minus.text.size = diff_words->plus.text.size = 0;
@@ -477,7 +480,6 @@ static void diff_words_show(struct diff_words_data *diff_words)
typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len);
struct emit_callback {
- struct xdiff_emit_state xm;
int nparents, color_diff;
unsigned ws_rule;
sane_truncate_fn truncate;
@@ -580,6 +582,12 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
ecbdata->label_path[0] = ecbdata->label_path[1] = NULL;
}
+ if (diff_suppress_blank_empty
+ && len == 2 && line[0] == ' ' && line[1] == '\n') {
+ line[0] = '\n';
+ len = 1;
+ }
+
/* This is not really necessary for now because
* this codepath only deals with two-way diffs.
*/
@@ -708,8 +716,6 @@ static char *pprint_rename(const char *a, const char *b)
}
struct diffstat_t {
- struct xdiff_emit_state xm;
-
int nr;
int alloc;
struct diffstat_file {
@@ -1139,7 +1145,6 @@ static void free_diffstat_info(struct diffstat_t *diffstat)
}
struct checkdiff_t {
- struct xdiff_emit_state xm;
const char *filename;
int lineno;
struct diff_options *o;
@@ -1384,6 +1389,8 @@ static struct builtin_funcname_pattern {
const char *name;
const char *pattern;
} builtin_funcname_pattern[] = {
+ { "bibtex", "\\(@[a-zA-Z]\\{1,\\}[ \t]*{\\{0,1\\}[ \t]*[^ \t\"@',\\#}{~%]*\\).*$" },
+ { "html", "^\\s*\\(<[Hh][1-6]\\s.*>.*\\)$" },
{ "java", "!^[ ]*\\(catch\\|do\\|for\\|if\\|instanceof\\|"
"new\\|return\\|switch\\|throw\\|while\\)\n"
"^[ ]*\\(\\([ ]*"
@@ -1395,9 +1402,9 @@ static struct builtin_funcname_pattern {
"\\|"
"^\\(.*=[ \t]*\\(class\\|record\\).*\\)$"
},
- { "bibtex", "\\(@[a-zA-Z]\\{1,\\}[ \t]*{\\{0,1\\}[ \t]*[^ \t\"@',\\#}{~%]*\\).*$" },
- { "tex", "^\\(\\\\\\(\\(sub\\)*section\\|chapter\\|part\\)\\*\\{0,1\\}{.*\\)$" },
+ { "python", "^\\s*\\(\\(class\\|def\\)\\s.*\\)$" },
{ "ruby", "^\\s*\\(\\(class\\|module\\|def\\)\\s.*\\)$" },
+ { "tex", "^\\(\\\\\\(\\(sub\\)*section\\|chapter\\|part\\)\\*\\{0,1\\}{.*\\)$" },
};
static const char *diff_funcname_pattern(struct diff_filespec *one)
@@ -1529,15 +1536,13 @@ static void builtin_diff(const char *name_a,
xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10);
else if (!prefixcmp(diffopts, "-u"))
xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10);
- ecb.outf = xdiff_outf;
- ecb.priv = &ecbdata;
- ecbdata.xm.consume = fn_out_consume;
if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) {
ecbdata.diff_words =
xcalloc(1, sizeof(struct diff_words_data));
ecbdata.diff_words->file = o->file;
}
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata,
+ &xpp, &xecfg, &ecb);
if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS))
free_diff_words_data(&ecbdata);
}
@@ -1588,9 +1593,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
- ecb.outf = xdiff_outf;
- ecb.priv = diffstat;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
+ &xpp, &xecfg, &ecb);
}
free_and_return:
@@ -1611,7 +1615,6 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
return;
memset(&data, 0, sizeof(data));
- data.xm.consume = checkdiff_consume;
data.filename = name_b ? name_b : name_a;
data.lineno = 0;
data.o = o;
@@ -1637,9 +1640,8 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
memset(&xecfg, 0, sizeof(xecfg));
xecfg.ctxlen = 1; /* at least one context line */
xpp.flags = XDF_NEED_MINIMAL;
- ecb.outf = xdiff_outf;
- ecb.priv = &data;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data,
+ &xpp, &xecfg, &ecb);
if ((data.ws_rule & WS_TRAILING_SPACE) &&
data.trailing_blanks_start) {
@@ -3027,7 +3029,6 @@ static void diff_summary(FILE *file, struct diff_filepair *p)
}
struct patch_id_t {
- struct xdiff_emit_state xm;
SHA_CTX *ctx;
int patchlen;
};
@@ -3072,7 +3073,6 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
SHA1_Init(&ctx);
memset(&data, 0, sizeof(struct patch_id_t));
data.ctx = &ctx;
- data.xm.consume = patch_id_consume;
for (i = 0; i < q->nr; i++) {
xpparam_t xpp;
@@ -3137,9 +3137,8 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
xpp.flags = XDF_NEED_MINIMAL;
xecfg.ctxlen = 3;
xecfg.flags = XDL_EMIT_FUNCNAMES;
- ecb.outf = xdiff_outf;
- ecb.priv = &data;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data,
+ &xpp, &xecfg, &ecb);
}
SHA1_Final(sha1, &ctx);
@@ -3216,7 +3215,6 @@ void diff_flush(struct diff_options *options)
struct diffstat_t diffstat;
memset(&diffstat, 0, sizeof(struct diffstat_t));
- diffstat.xm.consume = diffstat_consume;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
if (check_pair_status(p))