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-rw-r--r--diff.c1369
1 files changed, 864 insertions, 505 deletions
diff --git a/diff.c b/diff.c
index fcc0078074..7500c55095 100644
--- a/diff.c
+++ b/diff.c
@@ -15,6 +15,8 @@
#include "sigchain.h"
#include "submodule.h"
#include "ll-merge.h"
+#include "string-list.h"
+#include "argv-array.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
@@ -25,14 +27,18 @@
static int diff_detect_rename_default;
static int diff_rename_limit_default = 400;
static int diff_suppress_blank_empty;
-int diff_use_color_default = -1;
+static int diff_use_color_default = -1;
+static int diff_context_default = 3;
static const char *diff_word_regex_cfg;
static const char *external_diff_cmd_cfg;
+static const char *diff_order_file_cfg;
int diff_auto_refresh_index = 1;
static int diff_mnemonic_prefix;
static int diff_no_prefix;
+static int diff_stat_graph_width;
static int diff_dirstat_permille_default = 30;
static struct diff_options default_diff_options;
+static long diff_algorithm;
static char diff_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
@@ -46,47 +52,51 @@ static char diff_colors[][COLOR_MAXLEN] = {
GIT_COLOR_NORMAL, /* FUNCINFO */
};
-static int parse_diff_color_slot(const char *var, int ofs)
+static int parse_diff_color_slot(const char *var)
{
- if (!strcasecmp(var+ofs, "plain"))
+ if (!strcasecmp(var, "plain"))
return DIFF_PLAIN;
- if (!strcasecmp(var+ofs, "meta"))
+ if (!strcasecmp(var, "meta"))
return DIFF_METAINFO;
- if (!strcasecmp(var+ofs, "frag"))
+ if (!strcasecmp(var, "frag"))
return DIFF_FRAGINFO;
- if (!strcasecmp(var+ofs, "old"))
+ if (!strcasecmp(var, "old"))
return DIFF_FILE_OLD;
- if (!strcasecmp(var+ofs, "new"))
+ if (!strcasecmp(var, "new"))
return DIFF_FILE_NEW;
- if (!strcasecmp(var+ofs, "commit"))
+ if (!strcasecmp(var, "commit"))
return DIFF_COMMIT;
- if (!strcasecmp(var+ofs, "whitespace"))
+ if (!strcasecmp(var, "whitespace"))
return DIFF_WHITESPACE;
- if (!strcasecmp(var+ofs, "func"))
+ if (!strcasecmp(var, "func"))
return DIFF_FUNCINFO;
return -1;
}
-static int parse_dirstat_params(struct diff_options *options, const char *params,
+static int parse_dirstat_params(struct diff_options *options, const char *params_string,
struct strbuf *errmsg)
{
- const char *p = params;
- int p_len, ret = 0;
+ char *params_copy = xstrdup(params_string);
+ struct string_list params = STRING_LIST_INIT_NODUP;
+ int ret = 0;
+ int i;
- while (*p) {
- p_len = strchrnul(p, ',') - p;
- if (!memcmp(p, "changes", p_len)) {
+ if (*params_copy)
+ string_list_split_in_place(&params, params_copy, ',', -1);
+ for (i = 0; i < params.nr; i++) {
+ const char *p = params.items[i].string;
+ if (!strcmp(p, "changes")) {
DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
- } else if (!memcmp(p, "lines", p_len)) {
+ } else if (!strcmp(p, "lines")) {
DIFF_OPT_SET(options, DIRSTAT_BY_LINE);
DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
- } else if (!memcmp(p, "files", p_len)) {
+ } else if (!strcmp(p, "files")) {
DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
DIFF_OPT_SET(options, DIRSTAT_BY_FILE);
- } else if (!memcmp(p, "noncumulative", p_len)) {
+ } else if (!strcmp(p, "noncumulative")) {
DIFF_OPT_CLR(options, DIRSTAT_CUMULATIVE);
- } else if (!memcmp(p, "cumulative", p_len)) {
+ } else if (!strcmp(p, "cumulative")) {
DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE);
} else if (isdigit(*p)) {
char *end;
@@ -98,27 +108,35 @@ static int parse_dirstat_params(struct diff_options *options, const char *params
while (isdigit(*++end))
; /* nothing */
}
- if (end - p == p_len)
+ if (!*end)
options->dirstat_permille = permille;
else {
- strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%.*s'\n"),
- p_len, p);
+ strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%s'\n"),
+ p);
ret++;
}
} else {
- strbuf_addf(errmsg, _(" Unknown dirstat parameter '%.*s'\n"),
- p_len, p);
+ strbuf_addf(errmsg, _(" Unknown dirstat parameter '%s'\n"), p);
ret++;
}
- p += p_len;
-
- if (*p)
- p++; /* more parameters, swallow separator */
}
+ string_list_clear(&params, 0);
+ free(params_copy);
return ret;
}
+static int parse_submodule_params(struct diff_options *options, const char *value)
+{
+ if (!strcmp(value, "log"))
+ DIFF_OPT_SET(options, SUBMODULE_LOG);
+ else if (!strcmp(value, "short"))
+ DIFF_OPT_CLR(options, SUBMODULE_LOG);
+ else
+ return -1;
+ return 0;
+}
+
static int git_config_rename(const char *var, const char *value)
{
if (!value)
@@ -128,6 +146,21 @@ static int git_config_rename(const char *var, const char *value)
return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0;
}
+long parse_algorithm_value(const char *value)
+{
+ if (!value)
+ return -1;
+ else if (!strcasecmp(value, "myers") || !strcasecmp(value, "default"))
+ return 0;
+ else if (!strcasecmp(value, "minimal"))
+ return XDF_NEED_MINIMAL;
+ else if (!strcasecmp(value, "patience"))
+ return XDF_PATIENCE_DIFF;
+ else if (!strcasecmp(value, "histogram"))
+ return XDF_HISTOGRAM_DIFF;
+ return -1;
+}
+
/*
* These are to give UI layer defaults.
* The core-level commands such as git-diff-files should
@@ -140,6 +173,12 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
diff_use_color_default = git_config_colorbool(var, value);
return 0;
}
+ if (!strcmp(var, "diff.context")) {
+ diff_context_default = git_config_int(var, value);
+ if (diff_context_default < 0)
+ return -1;
+ return 0;
+ }
if (!strcmp(var, "diff.renames")) {
diff_detect_rename_default = git_config_rename(var, value);
return 0;
@@ -156,14 +195,34 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
diff_no_prefix = git_config_bool(var, value);
return 0;
}
+ if (!strcmp(var, "diff.statgraphwidth")) {
+ diff_stat_graph_width = git_config_int(var, value);
+ return 0;
+ }
if (!strcmp(var, "diff.external"))
return git_config_string(&external_diff_cmd_cfg, var, value);
if (!strcmp(var, "diff.wordregex"))
return git_config_string(&diff_word_regex_cfg, var, value);
+ if (!strcmp(var, "diff.orderfile"))
+ return git_config_pathname(&diff_order_file_cfg, var, value);
if (!strcmp(var, "diff.ignoresubmodules"))
handle_ignore_submodules_arg(&default_diff_options, value);
+ if (!strcmp(var, "diff.submodule")) {
+ if (parse_submodule_params(&default_diff_options, value))
+ warning(_("Unknown value for 'diff.submodule' config variable: '%s'"),
+ value);
+ return 0;
+ }
+
+ if (!strcmp(var, "diff.algorithm")) {
+ diff_algorithm = parse_algorithm_value(value);
+ if (diff_algorithm < 0)
+ return -1;
+ return 0;
+ }
+
if (git_color_config(var, value, cb) < 0)
return -1;
@@ -172,25 +231,24 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
int git_diff_basic_config(const char *var, const char *value, void *cb)
{
+ const char *name;
+
if (!strcmp(var, "diff.renamelimit")) {
diff_rename_limit_default = git_config_int(var, value);
return 0;
}
- switch (userdiff_config(var, value)) {
- case 0: break;
- case -1: return -1;
- default: return 0;
- }
+ if (userdiff_config(var, value) < 0)
+ return -1;
- if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) {
- int slot = parse_diff_color_slot(var, 11);
+ if (skip_prefix(var, "diff.color.", &name) ||
+ skip_prefix(var, "color.diff.", &name)) {
+ int slot = parse_diff_color_slot(name);
if (slot < 0)
return 0;
if (!value)
return config_error_nonbool(var);
- color_parse(value, var, diff_colors[slot]);
- return 0;
+ return color_parse(value, diff_colors[slot]);
}
/* like GNU diff's --suppress-blank-empty option */
@@ -212,7 +270,7 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
return 0;
}
- if (!prefixcmp(var, "submodule."))
+ if (starts_with(var, "submodule."))
return parse_submodule_config_option(var, value);
return git_default_config(var, value, cb);
@@ -317,7 +375,7 @@ static unsigned long diff_filespec_size(struct diff_filespec *one)
{
if (!DIFF_FILE_VALID(one))
return 0;
- diff_populate_filespec(one, 1);
+ diff_populate_filespec(one, CHECK_SIZE_ONLY);
return one->size;
}
@@ -373,12 +431,7 @@ static void emit_line_0(struct diff_options *o, const char *set, const char *res
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);
- }
+ fputs(diff_line_prefix(o), file);
if (len == 0) {
has_trailing_newline = (first == '\n');
@@ -471,9 +524,9 @@ static void emit_hunk_header(struct emit_callback *ecbdata,
ep += 2; /* skip over @@ */
/* The hunk header in fraginfo color */
- strbuf_add(&msgbuf, frag, strlen(frag));
+ strbuf_addstr(&msgbuf, frag);
strbuf_add(&msgbuf, line, ep - line);
- strbuf_add(&msgbuf, reset, strlen(reset));
+ strbuf_addstr(&msgbuf, reset);
/*
* trailing "\r\n"
@@ -487,15 +540,15 @@ static void emit_hunk_header(struct emit_callback *ecbdata,
if (*ep != ' ' && *ep != '\t')
break;
if (ep != cp) {
- strbuf_add(&msgbuf, plain, strlen(plain));
+ strbuf_addstr(&msgbuf, plain);
strbuf_add(&msgbuf, cp, ep - cp);
- strbuf_add(&msgbuf, reset, strlen(reset));
+ strbuf_addstr(&msgbuf, reset);
}
if (ep < line + len) {
- strbuf_add(&msgbuf, func, strlen(func));
+ strbuf_addstr(&msgbuf, func);
strbuf_add(&msgbuf, ep, line + len - ep);
- strbuf_add(&msgbuf, reset, strlen(reset));
+ strbuf_addstr(&msgbuf, reset);
}
strbuf_add(&msgbuf, line + len, org_len - len);
@@ -572,6 +625,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb,
if (!endp) {
const char *plain = diff_get_color(ecb->color_diff,
DIFF_PLAIN);
+ putc('\n', ecb->opt->file);
emit_line_0(ecb->opt, plain, reset, '\\',
nneof, strlen(nneof));
}
@@ -595,13 +649,7 @@ 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;
- }
+ const char *line_prefix = diff_line_prefix(o);
if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
a_prefix = o->b_prefix;
@@ -627,7 +675,7 @@ static void emit_rewrite_diff(const char *name_a,
memset(&ecbdata, 0, sizeof(ecbdata));
ecbdata.color_diff = want_color(o->use_color);
ecbdata.found_changesp = &o->found_changes;
- ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
+ ecbdata.ws_rule = whitespace_rule(name_b);
ecbdata.opt = o;
if (ecbdata.ws_rule & WS_BLANK_AT_EOF) {
mmfile_t mf1, mf2;
@@ -797,18 +845,14 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
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 = "";
+ const 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;
- }
+ line_prefix = diff_line_prefix(opt);
/* POSIX requires that first be decremented by one if len == 0... */
if (minus_len) {
@@ -932,14 +976,10 @@ static void diff_words_show(struct diff_words_data *diff_words)
struct diff_words_style *style = diff_words->style;
struct diff_options *opt = diff_words->opt;
- struct strbuf *msgbuf;
- char *line_prefix = "";
+ const char *line_prefix;
assert(opt);
- if (opt->output_prefix) {
- msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ line_prefix = diff_line_prefix(opt);
/* special case: only removal */
if (!diff_words->plus.text.size) {
@@ -987,10 +1027,74 @@ static void diff_words_flush(struct emit_callback *ecbdata)
diff_words_show(ecbdata->diff_words);
}
+static void diff_filespec_load_driver(struct diff_filespec *one)
+{
+ /* Use already-loaded driver */
+ if (one->driver)
+ return;
+
+ if (S_ISREG(one->mode))
+ one->driver = userdiff_find_by_path(one->path);
+
+ /* Fallback to default settings */
+ if (!one->driver)
+ one->driver = userdiff_find_by_name("default");
+}
+
+static const char *userdiff_word_regex(struct diff_filespec *one)
+{
+ diff_filespec_load_driver(one);
+ return one->driver->word_regex;
+}
+
+static void init_diff_words_data(struct emit_callback *ecbdata,
+ struct diff_options *orig_opts,
+ struct diff_filespec *one,
+ struct diff_filespec *two)
+{
+ int i;
+ struct diff_options *o = xmalloc(sizeof(struct diff_options));
+ memcpy(o, orig_opts, sizeof(struct diff_options));
+
+ ecbdata->diff_words =
+ xcalloc(1, sizeof(struct diff_words_data));
+ 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)
+ o->word_regex = userdiff_word_regex(two);
+ if (!o->word_regex)
+ o->word_regex = diff_word_regex_cfg;
+ if (o->word_regex) {
+ ecbdata->diff_words->word_regex = (regex_t *)
+ xmalloc(sizeof(regex_t));
+ if (regcomp(ecbdata->diff_words->word_regex,
+ o->word_regex,
+ REG_EXTENDED | REG_NEWLINE))
+ die ("Invalid regular expression: %s",
+ o->word_regex);
+ }
+ for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) {
+ if (o->word_diff == diff_words_styles[i].type) {
+ ecbdata->diff_words->style =
+ &diff_words_styles[i];
+ break;
+ }
+ }
+ if (want_color(o->use_color)) {
+ struct diff_words_style *st = ecbdata->diff_words->style;
+ st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD);
+ st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW);
+ st->ctx.color = diff_get_color_opt(o, DIFF_PLAIN);
+ }
+}
+
static void free_diff_words_data(struct emit_callback *ecbdata)
{
if (ecbdata->diff_words) {
diff_words_flush(ecbdata);
+ free (ecbdata->diff_words->opt);
free (ecbdata->diff_words->minus.text.ptr);
free (ecbdata->diff_words->minus.orig);
free (ecbdata->diff_words->plus.text.ptr);
@@ -1011,6 +1115,16 @@ const char *diff_get_color(int diff_use_color, enum color_diff ix)
return "";
}
+const char *diff_line_prefix(struct diff_options *opt)
+{
+ struct strbuf *msgbuf;
+ if (!opt->output_prefix)
+ return "";
+
+ msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
+ return msgbuf->buf;
+}
+
static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len)
{
const char *cp;
@@ -1051,13 +1165,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
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;
- }
+ const char *line_prefix = diff_line_prefix(o);
if (ecbdata->header) {
fprintf(ecbdata->opt->file, "%s", ecbdata->header->buf);
@@ -1113,6 +1221,15 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
diff_words_append(line, len,
&ecbdata->diff_words->plus);
return;
+ } else if (starts_with(line, "\\ ")) {
+ /*
+ * Eat the "no newline at eof" marker as if we
+ * saw a "+" or "-" line with nothing on it,
+ * and return without diff_words_flush() to
+ * defer processing. If this is the end of
+ * preimage, more "+" lines may come after it.
+ */
+ return;
}
diff_words_flush(ecbdata);
if (ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN) {
@@ -1153,6 +1270,7 @@ static char *pprint_rename(const char *a, const char *b)
const char *new = b;
struct strbuf name = STRBUF_INIT;
int pfx_length, sfx_length;
+ int pfx_adjust_for_slash;
int len_a = strlen(a);
int len_b = strlen(b);
int a_midlen, b_midlen;
@@ -1179,7 +1297,18 @@ static char *pprint_rename(const char *a, const char *b)
old = a + len_a;
new = b + len_b;
sfx_length = 0;
- while (a <= old && b <= new && *old == *new) {
+ /*
+ * If there is a common prefix, it must end in a slash. In
+ * that case we let this loop run 1 into the prefix to see the
+ * same slash.
+ *
+ * If there is no common prefix, we cannot do this as it would
+ * underrun the input strings.
+ */
+ pfx_adjust_for_slash = (pfx_length ? 1 : 0);
+ while (a + pfx_length - pfx_adjust_for_slash <= old &&
+ b + pfx_length - pfx_adjust_for_slash <= new &&
+ *old == *new) {
if (*old == '/')
sfx_length = len_a - (old - a);
old--;
@@ -1224,6 +1353,7 @@ struct diffstat_t {
unsigned is_unmerged:1;
unsigned is_binary:1;
unsigned is_renamed:1;
+ unsigned is_interesting:1;
uintmax_t added, deleted;
} **files;
};
@@ -1233,12 +1363,8 @@ static struct diffstat_file *diffstat_add(struct diffstat_t *diffstat,
const char *name_b)
{
struct diffstat_file *x;
- x = xcalloc(sizeof (*x), 1);
- if (diffstat->nr == diffstat->alloc) {
- diffstat->alloc = alloc_nr(diffstat->alloc);
- diffstat->files = xrealloc(diffstat->files,
- diffstat->alloc * sizeof(x));
- }
+ x = xcalloc(1, sizeof(*x));
+ ALLOC_GROW(diffstat->files, diffstat->nr + 1, diffstat->alloc);
diffstat->files[diffstat->nr++] = x;
if (name_b) {
x->from_name = xstrdup(name_a);
@@ -1267,13 +1393,15 @@ const char mime_boundary_leader[] = "------------";
static int scale_linear(int it, int width, int max_change)
{
+ if (!it)
+ return 0;
/*
- * make sure that at least one '-' is printed if there were deletions,
- * and likewise for '+'.
+ * make sure that at least one '-' or '+' is printed if
+ * there is any change to this path. The easiest way is to
+ * scale linearly as if the alloted width is one column shorter
+ * than it is, and then add 1 to the result.
*/
- if (max_change < 2)
- return it;
- return ((it - 1) * (width - 1) + max_change - 1) / (max_change - 1);
+ return 1 + (it * (width - 1) / max_change);
}
static void show_name(FILE *file,
@@ -1313,49 +1441,73 @@ static void fill_print_name(struct diffstat_file *file)
file->print_name = pname;
}
+int print_stat_summary(FILE *fp, int files, int insertions, int deletions)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int ret;
+
+ if (!files) {
+ assert(insertions == 0 && deletions == 0);
+ return fprintf(fp, "%s\n", " 0 files changed");
+ }
+
+ strbuf_addf(&sb,
+ (files == 1) ? " %d file changed" : " %d files changed",
+ files);
+
+ /*
+ * For binary diff, the caller may want to print "x files
+ * changed" with insertions == 0 && deletions == 0.
+ *
+ * Not omitting "0 insertions(+), 0 deletions(-)" in this case
+ * is probably less confusing (i.e skip over "2 files changed
+ * but nothing about added/removed lines? Is this a bug in Git?").
+ */
+ if (insertions || deletions == 0) {
+ strbuf_addf(&sb,
+ (insertions == 1) ? ", %d insertion(+)" : ", %d insertions(+)",
+ insertions);
+ }
+
+ if (deletions || insertions == 0) {
+ strbuf_addf(&sb,
+ (deletions == 1) ? ", %d deletion(-)" : ", %d deletions(-)",
+ deletions);
+ }
+ strbuf_addch(&sb, '\n');
+ ret = fputs(sb.buf, fp);
+ strbuf_release(&sb);
+ return ret;
+}
+
static void show_stats(struct diffstat_t *data, struct diff_options *options)
{
int i, len, add, del, adds = 0, dels = 0;
uintmax_t max_change = 0, max_len = 0;
- int total_files = data->nr;
- int width, name_width, count;
+ int total_files = data->nr, count;
+ int width, name_width, graph_width, number_width = 0, bin_width = 0;
const char *reset, *add_c, *del_c;
const char *line_prefix = "";
int extra_shown = 0;
- 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;
+ line_prefix = diff_line_prefix(options);
count = options->stat_count ? options->stat_count : data->nr;
- /* Sanity: give at least 5 columns to the graph,
- * but leave at least 10 columns for the name.
- */
- if (width < 25)
- width = 25;
- if (name_width < 10)
- name_width = 10;
- else if (width < name_width + 15)
- name_width = width - 15;
-
- /* Find the longest filename and max number of changes */
reset = diff_get_color_opt(options, DIFF_RESET);
add_c = diff_get_color_opt(options, DIFF_FILE_NEW);
del_c = diff_get_color_opt(options, DIFF_FILE_OLD);
+ /*
+ * Find the longest filename and max number of changes
+ */
for (i = 0; (i < count) && (i < data->nr); i++) {
struct diffstat_file *file = data->files[i];
uintmax_t change = file->added + file->deleted;
- if (!data->files[i]->is_renamed &&
- (change == 0)) {
+
+ if (!file->is_interesting && (change == 0)) {
count++; /* not shown == room for one more */
continue;
}
@@ -1364,38 +1516,121 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
if (max_len < len)
max_len = len;
- if (file->is_binary || file->is_unmerged)
+ if (file->is_unmerged) {
+ /* "Unmerged" is 8 characters */
+ bin_width = bin_width < 8 ? 8 : bin_width;
+ continue;
+ }
+ if (file->is_binary) {
+ /* "Bin XXX -> YYY bytes" */
+ int w = 14 + decimal_width(file->added)
+ + decimal_width(file->deleted);
+ bin_width = bin_width < w ? w : bin_width;
+ /* Display change counts aligned with "Bin" */
+ number_width = 3;
continue;
+ }
+
if (max_change < change)
max_change = change;
}
- count = i; /* min(count, data->nr) */
+ count = i; /* where we can stop scanning in data->files[] */
- /* Compute the width of the graph part;
- * 10 is for one blank at the beginning of the line plus
- * " | count " between the name and the graph.
+ /*
+ * We have width = stat_width or term_columns() columns total.
+ * We want a maximum of min(max_len, stat_name_width) for the name part.
+ * We want a maximum of min(max_change, stat_graph_width) for the +- part.
+ * We also need 1 for " " and 4 + decimal_width(max_change)
+ * for " | NNNN " and one the empty column at the end, altogether
+ * 6 + decimal_width(max_change).
+ *
+ * If there's not enough space, we will use the smaller of
+ * stat_name_width (if set) and 5/8*width for the filename,
+ * and the rest for constant elements + graph part, but no more
+ * than stat_graph_width for the graph part.
+ * (5/8 gives 50 for filename and 30 for the constant parts + graph
+ * for the standard terminal size).
*
- * From here on, name_width is the width of the name area,
- * and width is the width of the graph area.
+ * In other words: stat_width limits the maximum width, and
+ * stat_name_width fixes the maximum width of the filename,
+ * and is also used to divide available columns if there
+ * aren't enough.
+ *
+ * Binary files are displayed with "Bin XXX -> YYY bytes"
+ * instead of the change count and graph. This part is treated
+ * similarly to the graph part, except that it is not
+ * "scaled". If total width is too small to accommodate the
+ * guaranteed minimum width of the filename part and the
+ * separators and this message, this message will "overflow"
+ * making the line longer than the maximum width.
*/
- name_width = (name_width < max_len) ? name_width : max_len;
- if (width < (name_width + 10) + max_change)
- width = width - (name_width + 10);
+
+ if (options->stat_width == -1)
+ width = term_columns() - options->output_prefix_length;
else
- width = max_change;
+ width = options->stat_width ? options->stat_width : 80;
+ number_width = decimal_width(max_change) > number_width ?
+ decimal_width(max_change) : number_width;
+
+ if (options->stat_graph_width == -1)
+ options->stat_graph_width = diff_stat_graph_width;
+
+ /*
+ * Guarantee 3/8*16==6 for the graph part
+ * and 5/8*16==10 for the filename part
+ */
+ if (width < 16 + 6 + number_width)
+ width = 16 + 6 + number_width;
+
+ /*
+ * First assign sizes that are wanted, ignoring available width.
+ * strlen("Bin XXX -> YYY bytes") == bin_width, and the part
+ * starting from "XXX" should fit in graph_width.
+ */
+ graph_width = max_change + 4 > bin_width ? max_change : bin_width - 4;
+ if (options->stat_graph_width &&
+ options->stat_graph_width < graph_width)
+ graph_width = options->stat_graph_width;
+
+ name_width = (options->stat_name_width > 0 &&
+ options->stat_name_width < max_len) ?
+ options->stat_name_width : max_len;
+ /*
+ * Adjust adjustable widths not to exceed maximum width
+ */
+ if (name_width + number_width + 6 + graph_width > width) {
+ if (graph_width > width * 3/8 - number_width - 6) {
+ graph_width = width * 3/8 - number_width - 6;
+ if (graph_width < 6)
+ graph_width = 6;
+ }
+
+ if (options->stat_graph_width &&
+ graph_width > options->stat_graph_width)
+ graph_width = options->stat_graph_width;
+ if (name_width > width - number_width - 6 - graph_width)
+ name_width = width - number_width - 6 - graph_width;
+ else
+ graph_width = width - number_width - 6 - name_width;
+ }
+
+ /*
+ * From here name_width is the width of the name area,
+ * and graph_width is the width of the graph area.
+ * max_change is used to scale graph properly.
+ */
for (i = 0; i < count; i++) {
const char *prefix = "";
- char *name = data->files[i]->print_name;
- uintmax_t added = data->files[i]->added;
- uintmax_t deleted = data->files[i]->deleted;
+ struct diffstat_file *file = data->files[i];
+ char *name = file->print_name;
+ uintmax_t added = file->added;
+ uintmax_t deleted = file->deleted;
int name_len;
- if (!data->files[i]->is_renamed &&
- (added + deleted == 0)) {
- total_files--;
+ if (!file->is_interesting && (added + deleted == 0))
continue;
- }
+
/*
* "scale" the filename
*/
@@ -1411,11 +1646,15 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
name = slash;
}
- if (data->files[i]->is_binary) {
+ if (file->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",
+ fprintf(options->file, " %*s", number_width, "Bin");
+ if (!added && !deleted) {
+ putc('\n', options->file);
+ continue;
+ }
+ fprintf(options->file, " %s%"PRIuMAX"%s",
del_c, deleted, reset);
fprintf(options->file, " -> ");
fprintf(options->file, "%s%"PRIuMAX"%s",
@@ -1424,10 +1663,10 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
fprintf(options->file, "\n");
continue;
}
- else if (data->files[i]->is_unmerged) {
+ else if (file->is_unmerged) {
fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
- fprintf(options->file, " Unmerged\n");
+ fprintf(options->file, " Unmerged\n");
continue;
}
@@ -1436,39 +1675,53 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
*/
add = added;
del = deleted;
- adds += add;
- dels += del;
- if (width <= max_change) {
- add = scale_linear(add, width, max_change);
- del = scale_linear(del, width, max_change);
+ if (graph_width <= max_change) {
+ int total = scale_linear(add + del, graph_width, max_change);
+ if (total < 2 && add && del)
+ /* width >= 2 due to the sanity check */
+ total = 2;
+ if (add < del) {
+ add = scale_linear(add, graph_width, max_change);
+ del = total - add;
+ } else {
+ del = scale_linear(del, graph_width, max_change);
+ add = total - del;
+ }
}
fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
- fprintf(options->file, "%5"PRIuMAX"%s", added + deleted,
- added + deleted ? " " : "");
+ fprintf(options->file, " %*"PRIuMAX"%s",
+ number_width, added + deleted,
+ added + deleted ? " " : "");
show_graph(options->file, '+', add, add_c, reset);
show_graph(options->file, '-', del, del_c, reset);
fprintf(options->file, "\n");
}
- for (i = count; i < data->nr; i++) {
- uintmax_t added = data->files[i]->added;
- uintmax_t deleted = data->files[i]->deleted;
- if (!data->files[i]->is_renamed &&
- (added + deleted == 0)) {
+
+ for (i = 0; i < data->nr; i++) {
+ struct diffstat_file *file = data->files[i];
+ uintmax_t added = file->added;
+ uintmax_t deleted = file->deleted;
+
+ if (file->is_unmerged ||
+ (!file->is_interesting && (added + deleted == 0))) {
total_files--;
continue;
}
- adds += added;
- dels += deleted;
+
+ if (!file->is_binary) {
+ adds += added;
+ dels += deleted;
+ }
+ if (i < count)
+ continue;
if (!extra_shown)
fprintf(options->file, "%s ...\n", line_prefix);
extra_shown = 1;
}
fprintf(options->file, "%s", line_prefix);
- fprintf(options->file,
- " %d files changed, %d insertions(+), %d deletions(-)\n",
- total_files, adds, dels);
+ print_stat_summary(options->file, total_files, adds, dels);
}
static void show_shortstats(struct diffstat_t *data, struct diff_options *options)
@@ -1479,27 +1732,19 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option
return;
for (i = 0; i < data->nr; i++) {
- if (!data->files[i]->is_binary &&
- !data->files[i]->is_unmerged) {
- int added = data->files[i]->added;
- int deleted= data->files[i]->deleted;
- if (!data->files[i]->is_renamed &&
- (added + deleted == 0)) {
- total_files--;
- } else {
- adds += added;
- dels += deleted;
- }
+ int added = data->files[i]->added;
+ int deleted= data->files[i]->deleted;
+
+ if (data->files[i]->is_unmerged ||
+ (!data->files[i]->is_interesting && (added + deleted == 0))) {
+ total_files--;
+ } else if (!data->files[i]->is_binary) { /* don't count bytes */
+ adds += added;
+ dels += deleted;
}
}
- 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);
+ fprintf(options->file, "%s", diff_line_prefix(options));
+ print_stat_summary(options->file, total_files, adds, dels);
}
static void show_numstat(struct diffstat_t *data, struct diff_options *options)
@@ -1512,12 +1757,7 @@ 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);
- }
+ fprintf(options->file, "%s", diff_line_prefix(options));
if (file->is_binary)
fprintf(options->file, "-\t-\t");
@@ -1559,13 +1799,7 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
{
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;
- }
+ const char *line_prefix = diff_line_prefix(opt);
while (dir->nr) {
struct dirstat_file *f = dir->files;
@@ -1675,11 +1909,11 @@ static void show_dirstat(struct diff_options *options)
diff_free_filespec_data(p->one);
diff_free_filespec_data(p->two);
} else if (DIFF_FILE_VALID(p->one)) {
- diff_populate_filespec(p->one, 1);
+ diff_populate_filespec(p->one, CHECK_SIZE_ONLY);
copied = added = 0;
diff_free_filespec_data(p->one);
} else if (DIFF_FILE_VALID(p->two)) {
- diff_populate_filespec(p->two, 1);
+ diff_populate_filespec(p->two, CHECK_SIZE_ONLY);
copied = 0;
added = p->two->size;
diff_free_filespec_data(p->two);
@@ -1815,15 +2049,10 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len)
const char *reset = diff_get_color(data->o->use_color, DIFF_RESET);
const char *set = diff_get_color(data->o->use_color, DIFF_FILE_NEW);
char *err;
- char *line_prefix = "";
- struct strbuf *msgbuf;
+ const char *line_prefix;
assert(data->o);
- if (data->o->output_prefix) {
- msgbuf = data->o->output_prefix(data->o,
- data->o->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ line_prefix = diff_line_prefix(data->o);
if (line[0] == '+') {
unsigned bad;
@@ -1864,7 +2093,6 @@ static unsigned char *deflate_it(char *data,
unsigned char *deflated;
git_zstream stream;
- memset(&stream, 0, sizeof(stream));
git_deflate_init(&stream, zlib_compression_level);
bound = git_deflate_bound(&stream, size);
deflated = xmalloc(bound);
@@ -1880,7 +2108,8 @@ static unsigned char *deflate_it(char *data,
return deflated;
}
-static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
+static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two,
+ const char *prefix)
{
void *cp;
void *delta;
@@ -1941,27 +2170,14 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char
free(data);
}
-static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
+static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two,
+ const char *prefix)
{
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)
-{
- /* Use already-loaded driver */
- if (one->driver)
- return;
-
- if (S_ISREG(one->mode))
- one->driver = userdiff_find_by_path(one->path);
-
- /* Fallback to default settings */
- if (!one->driver)
- one->driver = userdiff_find_by_name("default");
-}
-
int diff_filespec_is_binary(struct diff_filespec *one)
{
if (one->is_binary == -1) {
@@ -1970,8 +2186,8 @@ int diff_filespec_is_binary(struct diff_filespec *one)
one->is_binary = one->driver->binary;
else {
if (!one->data && DIFF_FILE_VALID(one))
- diff_populate_filespec(one, 0);
- if (one->data)
+ diff_populate_filespec(one, CHECK_BINARY);
+ if (one->is_binary == -1 && one->data)
one->is_binary = buffer_is_binary(one->data,
one->size);
if (one->is_binary == -1)
@@ -1987,12 +2203,6 @@ static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespe
return one->driver->funcname.pattern ? &one->driver->funcname : NULL;
}
-static const char *userdiff_word_regex(struct diff_filespec *one)
-{
- diff_filespec_load_driver(one);
- return one->driver->word_regex;
-}
-
void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b)
{
if (!options->a_prefix)
@@ -2022,28 +2232,23 @@ static void builtin_diff(const char *name_a,
mmfile_t mf1, mf2;
const char *lbl[2];
char *a_one, *b_two;
- const char *set = diff_get_color_opt(o, DIFF_METAINFO);
+ const char *meta = diff_get_color_opt(o, DIFF_METAINFO);
const char *reset = diff_get_color_opt(o, DIFF_RESET);
const char *a_prefix, *b_prefix;
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;
- }
+ const char *line_prefix = diff_line_prefix(o);
if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
(!one->mode || S_ISGITLINK(one->mode)) &&
(!two->mode || S_ISGITLINK(two->mode))) {
const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
- show_submodule_summary(o->file, one ? one->path : two->path,
+ show_submodule_summary(o->file, one->path ? one->path : two->path,
+ line_prefix,
one->sha1, two->sha1, two->dirty_submodule,
- del, add, reset);
+ meta, del, add, reset);
return;
}
@@ -2069,24 +2274,24 @@ 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, "%s%sdiff --git %s %s%s\n", line_prefix, set, a_one, b_two, reset);
+ strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, meta, a_one, b_two, reset);
if (lbl[0][0] == '/') {
/* /dev/null */
- strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset);
+ strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, meta, two->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
must_show_header = 1;
}
else if (lbl[1][0] == '/') {
- strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset);
+ strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, meta, one->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
must_show_header = 1;
}
else {
if (one->mode != two->mode) {
- 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);
+ strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, meta, one->mode, reset);
+ strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, meta, two->mode, reset);
must_show_header = 1;
}
if (xfrm_msg)
@@ -2117,6 +2322,19 @@ static void builtin_diff(const char *name_a,
} else if (!DIFF_OPT_TST(o, TEXT) &&
( (!textconv_one && diff_filespec_is_binary(one)) ||
(!textconv_two && diff_filespec_is_binary(two)) )) {
+ if (!one->data && !two->data &&
+ S_ISREG(one->mode) && S_ISREG(two->mode) &&
+ !DIFF_OPT_TST(o, BINARY)) {
+ if (!hashcmp(one->sha1, two->sha1)) {
+ if (must_show_header)
+ fprintf(o->file, "%s", header.buf);
+ goto free_ab_and_return;
+ }
+ fprintf(o->file, "%s", header.buf);
+ fprintf(o->file, "%sBinary files %s and %s differ\n",
+ line_prefix, lbl[0], lbl[1]);
+ goto free_ab_and_return;
+ }
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
/* Quite common confusing case */
@@ -2137,12 +2355,13 @@ static void builtin_diff(const char *name_a,
} else {
/* Crazy xdl interfaces.. */
const char *diffopts = getenv("GIT_DIFF_OPTS");
+ const char *v;
xpparam_t xpp;
xdemitconf_t xecfg;
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
- if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS) || must_show_header) {
+ if (must_show_header) {
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
}
@@ -2160,7 +2379,7 @@ static void builtin_diff(const char *name_a,
ecbdata.label_path = lbl;
ecbdata.color_diff = want_color(o->use_color);
ecbdata.found_changesp = &o->found_changes;
- ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
+ ecbdata.ws_rule = whitespace_rule(name_b);
if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
check_blank_at_eof(&mf1, &mf2, &ecbdata);
ecbdata.opt = o;
@@ -2169,50 +2388,18 @@ static void builtin_diff(const char *name_a,
xecfg.ctxlen = o->context;
xecfg.interhunkctxlen = o->interhunkcontext;
xecfg.flags = XDL_EMIT_FUNCNAMES;
+ if (DIFF_OPT_TST(o, FUNCCONTEXT))
+ xecfg.flags |= XDL_EMIT_FUNCCONTEXT;
if (pe)
xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
if (!diffopts)
;
- else if (!prefixcmp(diffopts, "--unified="))
- xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10);
- else if (!prefixcmp(diffopts, "-u"))
- xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10);
- if (o->word_diff) {
- int i;
-
- ecbdata.diff_words =
- xcalloc(1, sizeof(struct diff_words_data));
- 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)
- o->word_regex = userdiff_word_regex(two);
- if (!o->word_regex)
- o->word_regex = diff_word_regex_cfg;
- if (o->word_regex) {
- ecbdata.diff_words->word_regex = (regex_t *)
- xmalloc(sizeof(regex_t));
- if (regcomp(ecbdata.diff_words->word_regex,
- o->word_regex,
- REG_EXTENDED | REG_NEWLINE))
- die ("Invalid regular expression: %s",
- o->word_regex);
- }
- for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) {
- if (o->word_diff == diff_words_styles[i].type) {
- ecbdata.diff_words->style =
- &diff_words_styles[i];
- break;
- }
- }
- if (want_color(o->use_color)) {
- struct diff_words_style *st = ecbdata.diff_words->style;
- st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD);
- st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW);
- st->ctx.color = diff_get_color_opt(o, DIFF_PLAIN);
- }
- }
+ else if (skip_prefix(diffopts, "--unified=", &v))
+ xecfg.ctxlen = strtoul(v, NULL, 10);
+ else if (skip_prefix(diffopts, "-u", &v))
+ xecfg.ctxlen = strtoul(v, NULL, 10);
+ if (o->word_diff)
+ init_diff_words_data(&ecbdata, o, one, two);
xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata,
&xpp, &xecfg);
if (o->word_diff)
@@ -2238,22 +2425,37 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
struct diff_filespec *two,
struct diffstat_t *diffstat,
struct diff_options *o,
- int complete_rewrite)
+ struct diff_filepair *p)
{
mmfile_t mf1, mf2;
struct diffstat_file *data;
+ int same_contents;
+ int complete_rewrite = 0;
+
+ if (!DIFF_PAIR_UNMERGED(p)) {
+ if (p->status == DIFF_STATUS_MODIFIED && p->score)
+ complete_rewrite = 1;
+ }
data = diffstat_add(diffstat, name_a, name_b);
+ data->is_interesting = p->status != DIFF_STATUS_UNKNOWN;
if (!one || !two) {
data->is_unmerged = 1;
return;
}
+ same_contents = !hashcmp(one->sha1, two->sha1);
+
if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) {
data->is_binary = 1;
- data->added = diff_filespec_size(two);
- data->deleted = diff_filespec_size(one);
+ if (same_contents) {
+ data->added = 0;
+ data->deleted = 0;
+ } else {
+ data->added = diff_filespec_size(two);
+ data->deleted = diff_filespec_size(one);
+ }
}
else if (complete_rewrite) {
@@ -2263,7 +2465,7 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
data->added = count_lines(two->data, two->size);
}
- else {
+ else if (!same_contents) {
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
@@ -2274,6 +2476,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = o->xdl_opts;
+ xecfg.ctxlen = o->context;
+ xecfg.interhunkctxlen = o->interhunkcontext;
xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
&xpp, &xecfg);
}
@@ -2371,12 +2575,12 @@ void free_filespec(struct diff_filespec *spec)
}
void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1,
- unsigned short mode)
+ int sha1_valid, unsigned short mode)
{
if (mode) {
spec->mode = canon_mode(mode);
hashcpy(spec->sha1, sha1);
- spec->sha1_valid = !is_null_sha1(sha1);
+ spec->sha1_valid = sha1_valid;
}
}
@@ -2387,7 +2591,7 @@ void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1,
*/
static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file)
{
- struct cache_entry *ce;
+ const struct cache_entry *ce;
struct stat st;
int pos, len;
@@ -2449,22 +2653,6 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
return 0;
}
-static int populate_from_stdin(struct diff_filespec *s)
-{
- struct strbuf buf = STRBUF_INIT;
- size_t size = 0;
-
- if (strbuf_read(&buf, 0, 0) < 0)
- return error("error while reading from stdin %s",
- strerror(errno));
-
- s->should_munmap = 0;
- s->data = strbuf_detach(&buf, &size);
- s->size = size;
- s->should_free = 1;
- return 0;
-}
-
static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
{
int len;
@@ -2491,9 +2679,18 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
* grab the data for the blob (or file) for our own in-core comparison.
* diff_filespec has data and size fields for this purpose.
*/
-int diff_populate_filespec(struct diff_filespec *s, int size_only)
+int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
{
+ int size_only = flags & CHECK_SIZE_ONLY;
int err = 0;
+ /*
+ * demote FAIL to WARN to allow inspecting the situation
+ * instead of refusing.
+ */
+ enum safe_crlf crlf_warn = (safe_crlf == SAFE_CRLF_FAIL
+ ? SAFE_CRLF_WARN
+ : safe_crlf);
+
if (!DIFF_FILE_VALID(s))
die("internal error: asking to populate invalid file.");
if (S_ISDIR(s->mode))
@@ -2514,9 +2711,6 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
struct stat st;
int fd;
- if (!strcmp(s->path, "-"))
- return populate_from_stdin(s);
-
if (lstat(s->path, &st) < 0) {
if (errno == ENOENT) {
err_empty:
@@ -2542,6 +2736,11 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
}
if (size_only)
return 0;
+ if ((flags & CHECK_BINARY) &&
+ s->size > big_file_threshold && s->is_binary == -1) {
+ s->is_binary = 1;
+ return 0;
+ }
fd = open(s->path, O_RDONLY);
if (fd < 0)
goto err_empty;
@@ -2552,7 +2751,7 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
/*
* Convert from working tree format to canonical git format
*/
- if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) {
+ if (convert_to_git(s->path, s->data, s->size, &buf, crlf_warn)) {
size_t size = 0;
munmap(s->data, s->size);
s->should_munmap = 0;
@@ -2563,16 +2762,21 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
}
else {
enum object_type type;
- if (size_only) {
+ if (size_only || (flags & CHECK_BINARY)) {
type = sha1_object_info(s->sha1, &s->size);
if (type < 0)
die("unable to read %s", sha1_to_hex(s->sha1));
- } else {
- s->data = read_sha1_file(s->sha1, &type, &s->size);
- if (!s->data)
- die("unable to read %s", sha1_to_hex(s->sha1));
- s->should_free = 1;
+ if (size_only)
+ return 0;
+ if (s->size > big_file_threshold && s->is_binary == -1) {
+ s->is_binary = 1;
+ return 0;
+ }
}
+ s->data = read_sha1_file(s->sha1, &type, &s->size);
+ if (!s->data)
+ die("unable to read %s", sha1_to_hex(s->sha1));
+ s->should_free = 1;
}
return 0;
}
@@ -2656,8 +2860,9 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
remove_tempfile_installed = 1;
}
- if (!one->sha1_valid ||
- reuse_worktree_file(name, one->sha1, 1)) {
+ if (!S_ISGITLINK(one->mode) &&
+ (!one->sha1_valid ||
+ reuse_worktree_file(name, one->sha1, 1))) {
struct stat st;
if (lstat(name, &st) < 0) {
if (errno == ENOENT)
@@ -2701,6 +2906,16 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
return temp;
}
+static void add_external_diff_name(struct argv_array *argv,
+ const char *name,
+ struct diff_filespec *df)
+{
+ struct diff_tempfile *temp = prepare_temp_file(name, df);
+ argv_array_push(argv, temp->name);
+ argv_array_push(argv, temp->hex);
+ argv_array_push(argv, temp->mode);
+}
+
/* An external diff command takes:
*
* diff-cmd name infile1 infile1-sha1 infile1-mode \
@@ -2713,41 +2928,36 @@ static void run_external_diff(const char *pgm,
struct diff_filespec *one,
struct diff_filespec *two,
const char *xfrm_msg,
- int complete_rewrite)
+ int complete_rewrite,
+ struct diff_options *o)
{
- const char *spawn_arg[10];
- int retval;
- const char **arg = &spawn_arg[0];
+ struct argv_array argv = ARGV_ARRAY_INIT;
+ struct argv_array env = ARGV_ARRAY_INIT;
+ struct diff_queue_struct *q = &diff_queued_diff;
+
+ argv_array_push(&argv, pgm);
+ argv_array_push(&argv, name);
if (one && two) {
- struct diff_tempfile *temp_one, *temp_two;
- const char *othername = (other ? other : name);
- temp_one = prepare_temp_file(name, one);
- temp_two = prepare_temp_file(othername, two);
- *arg++ = pgm;
- *arg++ = name;
- *arg++ = temp_one->name;
- *arg++ = temp_one->hex;
- *arg++ = temp_one->mode;
- *arg++ = temp_two->name;
- *arg++ = temp_two->hex;
- *arg++ = temp_two->mode;
- if (other) {
- *arg++ = other;
- *arg++ = xfrm_msg;
+ add_external_diff_name(&argv, name, one);
+ if (!other)
+ add_external_diff_name(&argv, name, two);
+ else {
+ add_external_diff_name(&argv, other, two);
+ argv_array_push(&argv, other);
+ argv_array_push(&argv, xfrm_msg);
}
- } else {
- *arg++ = pgm;
- *arg++ = name;
}
- *arg = NULL;
- fflush(NULL);
- retval = run_command_v_opt(spawn_arg, RUN_USING_SHELL);
+
+ argv_array_pushf(&env, "GIT_DIFF_PATH_COUNTER=%d", ++o->diff_path_counter);
+ argv_array_pushf(&env, "GIT_DIFF_PATH_TOTAL=%d", q->nr);
+
+ if (run_command_v_opt_cd_env(argv.argv, RUN_USING_SHELL, NULL, env.argv))
+ die(_("external diff died, stopping at %s"), name);
+
remove_tempfile();
- if (retval) {
- fprintf(stderr, "external diff died, stopping at %s.\n", name);
- exit(1);
- }
+ argv_array_clear(&argv);
+ argv_array_clear(&env);
}
static int similarity_index(struct diff_filepair *p)
@@ -2767,14 +2977,9 @@ 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 = "";
+ const char *line_prefix = diff_line_prefix(o);
*must_show_header = 1;
- 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:
@@ -2841,9 +3046,8 @@ static void run_diff_cmd(const char *pgm,
int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score;
int must_show_header = 0;
- if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
- pgm = NULL;
- else {
+
+ if (DIFF_OPT_TST(o, ALLOW_EXTERNAL)) {
struct userdiff_driver *drv = userdiff_find_by_path(attr_path);
if (drv && drv->external)
pgm = drv->external;
@@ -2862,7 +3066,7 @@ static void run_diff_cmd(const char *pgm,
if (pgm) {
run_external_diff(pgm, name, other, one, two, xfrm_msg,
- complete_rewrite);
+ complete_rewrite, o);
return;
}
if (one && two)
@@ -2878,7 +3082,7 @@ static void diff_fill_sha1_info(struct diff_filespec *one)
if (DIFF_FILE_VALID(one)) {
if (!one->sha1_valid) {
struct stat st;
- if (!strcmp(one->path, "-")) {
+ if (one->is_stdin) {
hashcpy(one->sha1, null_sha1);
return;
}
@@ -2923,6 +3127,9 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
if (o->prefix_length)
strip_prefix(o->prefix_length, &name, &other);
+ if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
+ pgm = NULL;
+
if (DIFF_PAIR_UNMERGED(p)) {
run_diff_cmd(pgm, name, NULL, attr_path,
NULL, NULL, NULL, o, p);
@@ -2962,11 +3169,10 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
{
const char *name;
const char *other;
- int complete_rewrite = 0;
if (DIFF_PAIR_UNMERGED(p)) {
/* unmerged */
- builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, 0);
+ builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, p);
return;
}
@@ -2979,9 +3185,7 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
diff_fill_sha1_info(p->one);
diff_fill_sha1_info(p->two);
- if (p->status == DIFF_STATUS_MODIFIED && p->score)
- complete_rewrite = 1;
- builtin_diffstat(name, other, p->one, p->two, diffstat, o, complete_rewrite);
+ builtin_diffstat(name, other, p->one, p->two, diffstat, o, p);
}
static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
@@ -3018,12 +3222,17 @@ void diff_setup(struct diff_options *options)
options->break_opt = -1;
options->rename_limit = -1;
options->dirstat_permille = diff_dirstat_permille_default;
- options->context = 3;
+ options->context = diff_context_default;
+ DIFF_OPT_SET(options, RENAME_EMPTY);
+ /* pathchange left =NULL by default */
options->change = diff_change;
options->add_remove = diff_addremove;
options->use_color = diff_use_color_default;
options->detect_rename = diff_detect_rename_default;
+ options->xdl_opts |= diff_algorithm;
+
+ options->orderfile = diff_order_file_cfg;
if (diff_no_prefix) {
options->a_prefix = options->b_prefix = "";
@@ -3033,10 +3242,13 @@ void diff_setup(struct diff_options *options)
}
}
-int diff_setup_done(struct diff_options *options)
+void diff_setup_done(struct diff_options *options)
{
int count = 0;
+ if (options->set_default)
+ options->set_default(options);
+
if (options->output_format & DIFF_FORMAT_NAME)
count++;
if (options->output_format & DIFF_FORMAT_NAME_STATUS)
@@ -3133,7 +3345,10 @@ int diff_setup_done(struct diff_options *options)
DIFF_OPT_SET(options, EXIT_WITH_STATUS);
}
- return 0;
+ options->diff_path_counter = 0;
+
+ if (DIFF_OPT_TST(options, FOLLOW_RENAMES) && options->pathspec.nr != 1)
+ die(_("--follow requires exactly one pathspec"));
}
static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val)
@@ -3163,14 +3378,11 @@ static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *va
if (c != '-')
return 0;
arg++;
- eq = strchr(arg, '=');
- if (eq)
- len = eq - arg;
- else
- len = strlen(arg);
+ eq = strchrnul(arg, '=');
+ len = eq - arg;
if (!len || strncmp(arg, arg_long, len))
return 0;
- if (eq) {
+ if (*eq) {
int n;
char *end;
if (!isdigit(*++eq))
@@ -3205,13 +3417,11 @@ int parse_long_opt(const char *opt, const char **argv,
const char **optarg)
{
const char *arg = argv[0];
- if (arg[0] != '-' || arg[1] != '-')
+ if (!skip_prefix(arg, "--", &arg))
return 0;
- arg += strlen("--");
- if (prefixcmp(arg, opt))
+ if (!skip_prefix(arg, opt, &arg))
return 0;
- arg += strlen(opt);
- if (*arg == '=') { /* sticked form: --option=value */
+ if (*arg == '=') { /* stuck form: --option=value */
*optarg = arg + 1;
return 1;
}
@@ -3230,16 +3440,17 @@ static int stat_opt(struct diff_options *options, const char **av)
char *end;
int width = options->stat_width;
int name_width = options->stat_name_width;
+ int graph_width = options->stat_graph_width;
int count = options->stat_count;
int argcount = 1;
- arg += strlen("--stat");
+ if (!skip_prefix(arg, "--stat", &arg))
+ die("BUG: stat option does not begin with --stat: %s", arg);
end = (char *)arg;
switch (*arg) {
case '-':
- if (!prefixcmp(arg, "-width")) {
- arg += strlen("-width");
+ if (skip_prefix(arg, "-width", &arg)) {
if (*arg == '=')
width = strtoul(arg + 1, &end, 10);
else if (!*arg && !av[1])
@@ -3248,8 +3459,7 @@ static int stat_opt(struct diff_options *options, const char **av)
width = strtoul(av[1], &end, 10);
argcount = 2;
}
- } else if (!prefixcmp(arg, "-name-width")) {
- arg += strlen("-name-width");
+ } else if (skip_prefix(arg, "-name-width", &arg)) {
if (*arg == '=')
name_width = strtoul(arg + 1, &end, 10);
else if (!*arg && !av[1])
@@ -3258,8 +3468,16 @@ static int stat_opt(struct diff_options *options, const char **av)
name_width = strtoul(av[1], &end, 10);
argcount = 2;
}
- } else if (!prefixcmp(arg, "-count")) {
- arg += strlen("-count");
+ } else if (skip_prefix(arg, "-graph-width", &arg)) {
+ if (*arg == '=')
+ graph_width = strtoul(arg + 1, &end, 10);
+ else if (!*arg && !av[1])
+ die("Option '--stat-graph-width' requires a value");
+ else if (!*arg) {
+ graph_width = strtoul(av[1], &end, 10);
+ argcount = 2;
+ }
+ } else if (skip_prefix(arg, "-count", &arg)) {
if (*arg == '=')
count = strtoul(arg + 1, &end, 10);
else if (!*arg && !av[1])
@@ -3283,6 +3501,7 @@ static int stat_opt(struct diff_options *options, const char **av)
return 0;
options->output_format |= DIFF_FORMAT_DIFFSTAT;
options->stat_name_width = name_width;
+ options->stat_graph_width = graph_width;
options->stat_width = width;
options->stat_count = count;
return argcount;
@@ -3303,6 +3522,93 @@ static int parse_dirstat_opt(struct diff_options *options, const char *params)
return 1;
}
+static int parse_submodule_opt(struct diff_options *options, const char *value)
+{
+ if (parse_submodule_params(options, value))
+ die(_("Failed to parse --submodule option parameter: '%s'"),
+ value);
+ return 1;
+}
+
+static const char diff_status_letters[] = {
+ DIFF_STATUS_ADDED,
+ DIFF_STATUS_COPIED,
+ DIFF_STATUS_DELETED,
+ DIFF_STATUS_MODIFIED,
+ DIFF_STATUS_RENAMED,
+ DIFF_STATUS_TYPE_CHANGED,
+ DIFF_STATUS_UNKNOWN,
+ DIFF_STATUS_UNMERGED,
+ DIFF_STATUS_FILTER_AON,
+ DIFF_STATUS_FILTER_BROKEN,
+ '\0',
+};
+
+static unsigned int filter_bit['Z' + 1];
+
+static void prepare_filter_bits(void)
+{
+ int i;
+
+ if (!filter_bit[DIFF_STATUS_ADDED]) {
+ for (i = 0; diff_status_letters[i]; i++)
+ filter_bit[(int) diff_status_letters[i]] = (1 << i);
+ }
+}
+
+static unsigned filter_bit_tst(char status, const struct diff_options *opt)
+{
+ return opt->filter & filter_bit[(int) status];
+}
+
+static int parse_diff_filter_opt(const char *optarg, struct diff_options *opt)
+{
+ int i, optch;
+
+ prepare_filter_bits();
+
+ /*
+ * If there is a negation e.g. 'd' in the input, and we haven't
+ * initialized the filter field with another --diff-filter, start
+ * from full set of bits, except for AON.
+ */
+ if (!opt->filter) {
+ for (i = 0; (optch = optarg[i]) != '\0'; i++) {
+ if (optch < 'a' || 'z' < optch)
+ continue;
+ opt->filter = (1 << (ARRAY_SIZE(diff_status_letters) - 1)) - 1;
+ opt->filter &= ~filter_bit[DIFF_STATUS_FILTER_AON];
+ break;
+ }
+ }
+
+ for (i = 0; (optch = optarg[i]) != '\0'; i++) {
+ unsigned int bit;
+ int negate;
+
+ if ('a' <= optch && optch <= 'z') {
+ negate = 1;
+ optch = toupper(optch);
+ } else {
+ negate = 0;
+ }
+
+ bit = (0 <= optch && optch <= 'Z') ? filter_bit[optch] : 0;
+ if (!bit)
+ return optarg[i];
+ if (negate)
+ opt->filter &= ~bit;
+ else
+ opt->filter |= bit;
+ }
+ return 0;
+}
+
+static void enable_patch_output(int *fmt) {
+ *fmt &= ~DIFF_FORMAT_NO_OUTPUT;
+ *fmt |= DIFF_FORMAT_PATCH;
+}
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
@@ -3310,55 +3616,56 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
int argcount;
/* Output format options */
- if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
- options->output_format |= DIFF_FORMAT_PATCH;
- else if (opt_arg(arg, 'U', "unified", &options->context))
- options->output_format |= DIFF_FORMAT_PATCH;
+ if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch")
+ || opt_arg(arg, 'U', "unified", &options->context))
+ enable_patch_output(&options->output_format);
else if (!strcmp(arg, "--raw"))
options->output_format |= DIFF_FORMAT_RAW;
- else if (!strcmp(arg, "--patch-with-raw"))
- options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW;
- else if (!strcmp(arg, "--numstat"))
+ else if (!strcmp(arg, "--patch-with-raw")) {
+ enable_patch_output(&options->output_format);
+ options->output_format |= DIFF_FORMAT_RAW;
+ } else if (!strcmp(arg, "--numstat"))
options->output_format |= DIFF_FORMAT_NUMSTAT;
else if (!strcmp(arg, "--shortstat"))
options->output_format |= DIFF_FORMAT_SHORTSTAT;
else if (!strcmp(arg, "-X") || !strcmp(arg, "--dirstat"))
return parse_dirstat_opt(options, "");
- else if (!prefixcmp(arg, "-X"))
- return parse_dirstat_opt(options, arg + 2);
- else if (!prefixcmp(arg, "--dirstat="))
- return parse_dirstat_opt(options, arg + 10);
+ else if (skip_prefix(arg, "-X", &arg))
+ return parse_dirstat_opt(options, arg);
+ else if (skip_prefix(arg, "--dirstat=", &arg))
+ return parse_dirstat_opt(options, arg);
else if (!strcmp(arg, "--cumulative"))
return parse_dirstat_opt(options, "cumulative");
else if (!strcmp(arg, "--dirstat-by-file"))
return parse_dirstat_opt(options, "files");
- else if (!prefixcmp(arg, "--dirstat-by-file=")) {
+ else if (skip_prefix(arg, "--dirstat-by-file=", &arg)) {
parse_dirstat_opt(options, "files");
- return parse_dirstat_opt(options, arg + 18);
+ return parse_dirstat_opt(options, arg);
}
else if (!strcmp(arg, "--check"))
options->output_format |= DIFF_FORMAT_CHECKDIFF;
else if (!strcmp(arg, "--summary"))
options->output_format |= DIFF_FORMAT_SUMMARY;
- else if (!strcmp(arg, "--patch-with-stat"))
- options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT;
- else if (!strcmp(arg, "--name-only"))
+ else if (!strcmp(arg, "--patch-with-stat")) {
+ enable_patch_output(&options->output_format);
+ options->output_format |= DIFF_FORMAT_DIFFSTAT;
+ } else if (!strcmp(arg, "--name-only"))
options->output_format |= DIFF_FORMAT_NAME;
else if (!strcmp(arg, "--name-status"))
options->output_format |= DIFF_FORMAT_NAME_STATUS;
- else if (!strcmp(arg, "-s"))
+ else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch"))
options->output_format |= DIFF_FORMAT_NO_OUTPUT;
- else if (!prefixcmp(arg, "--stat"))
+ else if (starts_with(arg, "--stat"))
/* --stat, --stat-width, --stat-name-width, or --stat-count */
return stat_opt(options, av);
/* renames options */
- else if (!prefixcmp(arg, "-B") || !prefixcmp(arg, "--break-rewrites=") ||
+ else if (starts_with(arg, "-B") || starts_with(arg, "--break-rewrites=") ||
!strcmp(arg, "--break-rewrites")) {
if ((options->break_opt = diff_scoreopt_parse(arg)) == -1)
return error("invalid argument to -B: %s", arg+2);
}
- else if (!prefixcmp(arg, "-M") || !prefixcmp(arg, "--find-renames=") ||
+ else if (starts_with(arg, "-M") || starts_with(arg, "--find-renames=") ||
!strcmp(arg, "--find-renames")) {
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
return error("invalid argument to -M: %s", arg+2);
@@ -3367,7 +3674,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (!strcmp(arg, "-D") || !strcmp(arg, "--irreversible-delete")) {
options->irreversible_delete = 1;
}
- else if (!prefixcmp(arg, "-C") || !prefixcmp(arg, "--find-copies=") ||
+ else if (starts_with(arg, "-C") || starts_with(arg, "--find-copies=") ||
!strcmp(arg, "--find-copies")) {
if (options->detect_rename == DIFF_DETECT_COPY)
DIFF_OPT_SET(options, FIND_COPIES_HARDER);
@@ -3377,28 +3684,49 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
}
else if (!strcmp(arg, "--no-renames"))
options->detect_rename = 0;
+ else if (!strcmp(arg, "--rename-empty"))
+ DIFF_OPT_SET(options, RENAME_EMPTY);
+ else if (!strcmp(arg, "--no-rename-empty"))
+ DIFF_OPT_CLR(options, RENAME_EMPTY);
else if (!strcmp(arg, "--relative"))
DIFF_OPT_SET(options, RELATIVE_NAME);
- else if (!prefixcmp(arg, "--relative=")) {
+ else if (skip_prefix(arg, "--relative=", &arg)) {
DIFF_OPT_SET(options, RELATIVE_NAME);
- options->prefix = arg + 11;
+ options->prefix = arg;
}
/* xdiff options */
+ else if (!strcmp(arg, "--minimal"))
+ DIFF_XDL_SET(options, NEED_MINIMAL);
+ else if (!strcmp(arg, "--no-minimal"))
+ DIFF_XDL_CLR(options, NEED_MINIMAL);
else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
DIFF_XDL_SET(options, IGNORE_WHITESPACE);
else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change"))
DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
else if (!strcmp(arg, "--ignore-space-at-eol"))
DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
+ else if (!strcmp(arg, "--ignore-blank-lines"))
+ DIFF_XDL_SET(options, IGNORE_BLANK_LINES);
else if (!strcmp(arg, "--patience"))
- DIFF_XDL_SET(options, PATIENCE_DIFF);
+ options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
else if (!strcmp(arg, "--histogram"))
- DIFF_XDL_SET(options, HISTOGRAM_DIFF);
+ options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
+ else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
+ long value = parse_algorithm_value(optarg);
+ if (value < 0)
+ return error("option diff-algorithm accepts \"myers\", "
+ "\"minimal\", \"patience\" and \"histogram\"");
+ /* clear out previous settings */
+ DIFF_XDL_CLR(options, NEED_MINIMAL);
+ options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
+ options->xdl_opts |= value;
+ return argcount;
+ }
/* flags options */
else if (!strcmp(arg, "--binary")) {
- options->output_format |= DIFF_FORMAT_PATCH;
+ enable_patch_output(&options->output_format);
DIFF_OPT_SET(options, BINARY);
}
else if (!strcmp(arg, "--full-index"))
@@ -3411,10 +3739,12 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_OPT_SET(options, FIND_COPIES_HARDER);
else if (!strcmp(arg, "--follow"))
DIFF_OPT_SET(options, FOLLOW_RENAMES);
+ else if (!strcmp(arg, "--no-follow"))
+ DIFF_OPT_CLR(options, FOLLOW_RENAMES);
else if (!strcmp(arg, "--color"))
options->use_color = 1;
- else if (!prefixcmp(arg, "--color=")) {
- int value = git_config_colorbool(NULL, arg+8);
+ else if (skip_prefix(arg, "--color=", &arg)) {
+ int value = git_config_colorbool(NULL, arg);
if (value < 0)
return error("option `color' expects \"always\", \"auto\", or \"never\"");
options->use_color = value;
@@ -3425,29 +3755,28 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
options->use_color = 1;
options->word_diff = DIFF_WORDS_COLOR;
}
- else if (!prefixcmp(arg, "--color-words=")) {
+ else if (skip_prefix(arg, "--color-words=", &arg)) {
options->use_color = 1;
options->word_diff = DIFF_WORDS_COLOR;
- options->word_regex = arg + 14;
+ options->word_regex = arg;
}
else if (!strcmp(arg, "--word-diff")) {
if (options->word_diff == DIFF_WORDS_NONE)
options->word_diff = DIFF_WORDS_PLAIN;
}
- else if (!prefixcmp(arg, "--word-diff=")) {
- const char *type = arg + 12;
- if (!strcmp(type, "plain"))
+ else if (skip_prefix(arg, "--word-diff=", &arg)) {
+ if (!strcmp(arg, "plain"))
options->word_diff = DIFF_WORDS_PLAIN;
- else if (!strcmp(type, "color")) {
+ else if (!strcmp(arg, "color")) {
options->use_color = 1;
options->word_diff = DIFF_WORDS_COLOR;
}
- else if (!strcmp(type, "porcelain"))
+ else if (!strcmp(arg, "porcelain"))
options->word_diff = DIFF_WORDS_PORCELAIN;
- else if (!strcmp(type, "none"))
+ else if (!strcmp(arg, "none"))
options->word_diff = DIFF_WORDS_NONE;
else
- die("bad --word-diff argument: %s", type);
+ die("bad --word-diff argument: %s", arg);
}
else if ((argcount = parse_long_opt("word-diff-regex", av, &optarg))) {
if (options->word_diff == DIFF_WORDS_NONE)
@@ -3470,15 +3799,13 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (!strcmp(arg, "--ignore-submodules")) {
DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
handle_ignore_submodules_arg(options, "all");
- } else if (!prefixcmp(arg, "--ignore-submodules=")) {
+ } else if (skip_prefix(arg, "--ignore-submodules=", &arg)) {
DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
- handle_ignore_submodules_arg(options, arg + 20);
+ handle_ignore_submodules_arg(options, arg);
} else if (!strcmp(arg, "--submodule"))
DIFF_OPT_SET(options, SUBMODULE_LOG);
- else if (!prefixcmp(arg, "--submodule=")) {
- if (!strcmp(arg + 12, "log"))
- DIFF_OPT_SET(options, SUBMODULE_LOG);
- }
+ else if (skip_prefix(arg, "--submodule=", &arg))
+ return parse_submodule_opt(options, arg);
/* misc options */
else if (!strcmp(arg, "-z"))
@@ -3505,13 +3832,16 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
return argcount;
}
else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
- options->filter = optarg;
+ int offending = parse_diff_filter_opt(optarg, options);
+ if (offending)
+ die("unknown change class '%c' in --diff-filter=%s",
+ offending, optarg);
return argcount;
}
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DEFAULT_ABBREV;
- else if (!prefixcmp(arg, "--abbrev=")) {
- options->abbrev = strtoul(arg + 9, NULL, 10);
+ else if (skip_prefix(arg, "--abbrev=", &arg)) {
+ options->abbrev = strtoul(arg, NULL, 10);
if (options->abbrev < MINIMUM_ABBREV)
options->abbrev = MINIMUM_ABBREV;
else if (40 < options->abbrev)
@@ -3530,6 +3860,12 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (opt_arg(arg, '\0', "inter-hunk-context",
&options->interhunkcontext))
;
+ else if (!strcmp(arg, "-W"))
+ DIFF_OPT_SET(options, FUNCCONTEXT);
+ else if (!strcmp(arg, "--function-context"))
+ DIFF_OPT_SET(options, FUNCCONTEXT);
+ else if (!strcmp(arg, "--no-function-context"))
+ DIFF_OPT_CLR(options, FUNCCONTEXT);
else if ((argcount = parse_long_opt("output", av, &optarg))) {
options->file = fopen(optarg, "w");
if (!options->file)
@@ -3586,22 +3922,19 @@ static int diff_scoreopt_parse(const char *opt)
cmd = *opt++;
if (cmd == '-') {
/* convert the long-form arguments into short-form versions */
- if (!prefixcmp(opt, "break-rewrites")) {
- opt += strlen("break-rewrites");
+ if (skip_prefix(opt, "break-rewrites", &opt)) {
if (*opt == 0 || *opt++ == '=')
cmd = 'B';
- } else if (!prefixcmp(opt, "find-copies")) {
- opt += strlen("find-copies");
+ } else if (skip_prefix(opt, "find-copies", &opt)) {
if (*opt == 0 || *opt++ == '=')
cmd = 'C';
- } else if (!prefixcmp(opt, "find-renames")) {
- opt += strlen("find-renames");
+ } else if (skip_prefix(opt, "find-renames", &opt)) {
if (*opt == 0 || *opt++ == '=')
cmd = 'M';
}
}
if (cmd != 'M' && cmd != 'C' && cmd != 'B')
- return -1; /* that is not a -M, -C nor -B option */
+ return -1; /* that is not a -M, -C, or -B option */
opt1 = parse_rename_score(&opt);
if (cmd != 'B')
@@ -3625,11 +3958,7 @@ struct diff_queue_struct diff_queued_diff;
void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp)
{
- if (queue->alloc <= queue->nr) {
- queue->alloc = alloc_nr(queue->alloc);
- queue->queue = xrealloc(queue->queue,
- sizeof(dp) * queue->alloc);
- }
+ ALLOC_GROW(queue->queue, queue->nr + 1, queue->alloc);
queue->queue[queue->nr++] = dp;
}
@@ -3679,12 +4008,8 @@ 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);
- }
+ fprintf(opt->file, "%s", diff_line_prefix(opt));
if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) {
fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode,
diff_unique_abbrev(p->one->sha1, opt->abbrev));
@@ -3803,9 +4128,9 @@ void diff_debug_filespec(struct diff_filespec *s, int x, const char *one)
DIFF_FILE_VALID(s) ? "valid" : "invalid",
s->mode,
s->sha1_valid ? sha1_to_hex(s->sha1) : "");
- fprintf(stderr, "queue[%d] %s size %lu flags %d\n",
+ fprintf(stderr, "queue[%d] %s size %lu\n",
x, one ? one : "",
- s->size, s->xfrm_flags);
+ s->size);
}
void diff_debug_filepair(const struct diff_filepair *p, int i)
@@ -3954,12 +4279,7 @@ static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_fil
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;
- }
+ const char *line_prefix = diff_line_prefix(opt);
switch(p->status) {
case DIFF_STATUS_DELETED:
@@ -4013,7 +4333,7 @@ static void patch_id_consume(void *priv, char *line, unsigned long len)
int new_len;
/* Ignore line numbers when computing the SHA1 of the patch */
- if (!prefixcmp(line, "@@ -"))
+ if (starts_with(line, "@@ -"))
return;
new_len = remove_space(line, len);
@@ -4220,7 +4540,7 @@ void diff_flush(struct diff_options *options)
show_stats(&diffstat, options);
if (output_format & DIFF_FORMAT_SHORTSTAT)
show_shortstats(&diffstat, options);
- if (output_format & DIFF_FORMAT_DIRSTAT)
+ if (output_format & DIFF_FORMAT_DIRSTAT && dirstat_by_line)
show_dirstat_by_line(&diffstat, options);
free_diffstat_info(&diffstat);
separator++;
@@ -4240,7 +4560,7 @@ void diff_flush(struct diff_options *options)
DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
/*
* run diff_flush_patch for the exit status. setting
- * options->file to /dev/null should be safe, becaue we
+ * options->file to /dev/null should be safe, because we
* aren't supposed to produce any output anyway.
*/
if (options->close_file)
@@ -4260,7 +4580,9 @@ void diff_flush(struct diff_options *options)
if (output_format & DIFF_FORMAT_PATCH) {
if (separator) {
- putc(options->line_termination, options->file);
+ fprintf(options->file, "%s%c",
+ diff_line_prefix(options),
+ options->line_termination);
if (options->stat_sep) {
/* attach patch instead of inline */
fputs(options->stat_sep, options->file);
@@ -4298,27 +4620,32 @@ free_queue:
}
}
-static void diffcore_apply_filter(const char *filter)
+static int match_filter(const struct diff_options *options, const struct diff_filepair *p)
+{
+ return (((p->status == DIFF_STATUS_MODIFIED) &&
+ ((p->score &&
+ filter_bit_tst(DIFF_STATUS_FILTER_BROKEN, options)) ||
+ (!p->score &&
+ filter_bit_tst(DIFF_STATUS_MODIFIED, options)))) ||
+ ((p->status != DIFF_STATUS_MODIFIED) &&
+ filter_bit_tst(p->status, options)));
+}
+
+static void diffcore_apply_filter(struct diff_options *options)
{
int i;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
+
DIFF_QUEUE_CLEAR(&outq);
- if (!filter)
+ if (!options->filter)
return;
- if (strchr(filter, DIFF_STATUS_FILTER_AON)) {
+ if (filter_bit_tst(DIFF_STATUS_FILTER_AON, options)) {
int found;
for (i = found = 0; !found && i < q->nr; i++) {
- struct diff_filepair *p = q->queue[i];
- if (((p->status == DIFF_STATUS_MODIFIED) &&
- ((p->score &&
- strchr(filter, DIFF_STATUS_FILTER_BROKEN)) ||
- (!p->score &&
- strchr(filter, DIFF_STATUS_MODIFIED)))) ||
- ((p->status != DIFF_STATUS_MODIFIED) &&
- strchr(filter, p->status)))
+ if (match_filter(options, q->queue[i]))
found++;
}
if (found)
@@ -4336,14 +4663,7 @@ static void diffcore_apply_filter(const char *filter)
/* Only the matching ones */
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
-
- if (((p->status == DIFF_STATUS_MODIFIED) &&
- ((p->score &&
- strchr(filter, DIFF_STATUS_FILTER_BROKEN)) ||
- (!p->score &&
- strchr(filter, DIFF_STATUS_MODIFIED)))) ||
- ((p->status != DIFF_STATUS_MODIFIED) &&
- strchr(filter, p->status)))
+ if (match_filter(options, p))
diff_q(&outq, p);
else
diff_free_filepair(p);
@@ -4366,6 +4686,38 @@ static int diff_filespec_is_identical(struct diff_filespec *one,
return !memcmp(one->data, two->data, one->size);
}
+static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
+{
+ if (p->done_skip_stat_unmatch)
+ return p->skip_stat_unmatch_result;
+
+ p->done_skip_stat_unmatch = 1;
+ p->skip_stat_unmatch_result = 0;
+ /*
+ * 1. Entries that come from stat info dirtiness
+ * always have both sides (iow, not create/delete),
+ * one side of the object name is unknown, with
+ * the same mode and size. Keep the ones that
+ * do not match these criteria. They have real
+ * differences.
+ *
+ * 2. At this point, the file is known to be modified,
+ * with the same mode and size, and the object
+ * name of one side is unknown. Need to inspect
+ * the identical contents.
+ */
+ if (!DIFF_FILE_VALID(p->one) || /* (1) */
+ !DIFF_FILE_VALID(p->two) ||
+ (p->one->sha1_valid && p->two->sha1_valid) ||
+ (p->one->mode != p->two->mode) ||
+ diff_populate_filespec(p->one, CHECK_SIZE_ONLY) ||
+ diff_populate_filespec(p->two, CHECK_SIZE_ONLY) ||
+ (p->one->size != p->two->size) ||
+ !diff_filespec_is_identical(p->one, p->two)) /* (2) */
+ p->skip_stat_unmatch_result = 1;
+ return p->skip_stat_unmatch_result;
+}
+
static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
{
int i;
@@ -4376,27 +4728,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
- /*
- * 1. Entries that come from stat info dirtiness
- * always have both sides (iow, not create/delete),
- * one side of the object name is unknown, with
- * the same mode and size. Keep the ones that
- * do not match these criteria. They have real
- * differences.
- *
- * 2. At this point, the file is known to be modified,
- * with the same mode and size, and the object
- * name of one side is unknown. Need to inspect
- * the identical contents.
- */
- if (!DIFF_FILE_VALID(p->one) || /* (1) */
- !DIFF_FILE_VALID(p->two) ||
- (p->one->sha1_valid && p->two->sha1_valid) ||
- (p->one->mode != p->two->mode) ||
- diff_populate_filespec(p->one, 1) ||
- diff_populate_filespec(p->two, 1) ||
- (p->one->size != p->two->size) ||
- !diff_filespec_is_identical(p->one, p->two)) /* (2) */
+ if (diff_filespec_check_stat_unmatch(p))
diff_q(&outq, p);
else {
/*
@@ -4432,6 +4764,7 @@ void diffcore_fix_diff_index(struct diff_options *options)
void diffcore_std(struct diff_options *options)
{
+ /* NOTE please keep the following in sync with diff_tree_combined() */
if (options->skip_stat_unmatch)
diffcore_skip_stat_unmatch(options);
if (!options->found_follow) {
@@ -4450,7 +4783,7 @@ void diffcore_std(struct diff_options *options)
if (!options->found_follow)
/* See try_to_follow_renames() in tree-diff.c */
diff_resolve_rename_copy();
- diffcore_apply_filter(options->filter);
+ diffcore_apply_filter(options);
if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
DIFF_OPT_SET(options, HAS_CHANGES);
@@ -4464,7 +4797,7 @@ int diff_result_code(struct diff_options *opt, int status)
{
int result = 0;
- diff_warn_rename_limit("diff.renamelimit",
+ diff_warn_rename_limit("diff.renameLimit",
opt->needed_rename_limit,
opt->degraded_cc_to_c);
if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
@@ -4507,6 +4840,7 @@ static int is_submodule_ignored(const char *path, struct diff_options *options)
void diff_addremove(struct diff_options *options,
int addremove, unsigned mode,
const unsigned char *sha1,
+ int sha1_valid,
const char *concatpath, unsigned dirty_submodule)
{
struct diff_filespec *one, *two;
@@ -4538,9 +4872,9 @@ void diff_addremove(struct diff_options *options,
two = alloc_filespec(concatpath);
if (addremove != '+')
- fill_filespec(one, sha1, mode);
+ fill_filespec(one, sha1, sha1_valid, mode);
if (addremove != '-') {
- fill_filespec(two, sha1, mode);
+ fill_filespec(two, sha1, sha1_valid, mode);
two->dirty_submodule = dirty_submodule;
}
@@ -4553,10 +4887,12 @@ void diff_change(struct diff_options *options,
unsigned old_mode, unsigned new_mode,
const unsigned char *old_sha1,
const unsigned char *new_sha1,
+ int old_sha1_valid, int new_sha1_valid,
const char *concatpath,
unsigned old_dirty_submodule, unsigned new_dirty_submodule)
{
struct diff_filespec *one, *two;
+ struct diff_filepair *p;
if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) &&
is_submodule_ignored(concatpath, options))
@@ -4567,6 +4903,8 @@ void diff_change(struct diff_options *options,
const unsigned char *tmp_c;
tmp = old_mode; old_mode = new_mode; new_mode = tmp;
tmp_c = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_c;
+ tmp = old_sha1_valid; old_sha1_valid = new_sha1_valid;
+ new_sha1_valid = tmp;
tmp = old_dirty_submodule; old_dirty_submodule = new_dirty_submodule;
new_dirty_submodule = tmp;
}
@@ -4577,14 +4915,20 @@ void diff_change(struct diff_options *options,
one = alloc_filespec(concatpath);
two = alloc_filespec(concatpath);
- fill_filespec(one, old_sha1, old_mode);
- fill_filespec(two, new_sha1, new_mode);
+ fill_filespec(one, old_sha1, old_sha1_valid, old_mode);
+ fill_filespec(two, new_sha1, new_sha1_valid, new_mode);
one->dirty_submodule = old_dirty_submodule;
two->dirty_submodule = new_dirty_submodule;
+ p = diff_queue(&diff_queued_diff, one, two);
- diff_queue(&diff_queued_diff, one, two);
- if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
- DIFF_OPT_SET(options, HAS_CHANGES);
+ if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
+ return;
+
+ if (DIFF_OPT_TST(options, QUICK) && options->skip_stat_unmatch &&
+ !diff_filespec_check_stat_unmatch(p))
+ return;
+
+ DIFF_OPT_SET(options, HAS_CHANGES);
}
struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path)
@@ -4609,7 +4953,7 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
struct diff_tempfile *temp;
const char *argv[3];
const char **arg = argv;
- struct child_process child;
+ struct child_process child = CHILD_PROCESS_INIT;
struct strbuf buf = STRBUF_INIT;
int err = 0;
@@ -4618,7 +4962,6 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
*arg++ = temp->name;
*arg = NULL;
- memset(&child, 0, sizeof(child));
child.use_shell = 1;
child.argv = argv;
child.out = -1;
@@ -4684,3 +5027,19 @@ size_t fill_textconv(struct userdiff_driver *driver,
return size;
}
+
+void setup_diff_pager(struct diff_options *opt)
+{
+ /*
+ * If the user asked for our exit code, then either they want --quiet
+ * or --exit-code. We should definitely not bother with a pager in the
+ * former case, as we will generate no output. Since we still properly
+ * report our exit code even when a pager is run, we _could_ run a
+ * pager with --exit-code. But since we have not done so historically,
+ * and because it is easy to find people oneline advising "git diff
+ * --exit-code" in hooks and other scripts, we do not do so.
+ */
+ if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
+ check_pager_config("diff") != 0)
+ setup_pager();
+}
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-08 04:58:40 +0000