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-rw-r--r--diff.c249
1 files changed, 162 insertions, 87 deletions
diff --git a/diff.c b/diff.c
index 381cc8d4fd..e49f14a924 100644
--- a/diff.c
+++ b/diff.c
@@ -14,6 +14,7 @@
#include "userdiff.h"
#include "sigchain.h"
#include "submodule.h"
+#include "ll-merge.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
@@ -43,7 +44,8 @@ static char diff_colors[][COLOR_MAXLEN] = {
};
static void diff_filespec_load_driver(struct diff_filespec *one);
-static char *run_textconv(const char *, struct diff_filespec *, size_t *);
+static size_t fill_textconv(struct userdiff_driver *driver,
+ struct diff_filespec *df, char **outbuf);
static int parse_diff_color_slot(const char *var, int ofs)
{
@@ -465,8 +467,8 @@ static void emit_rewrite_diff(const char *name_a,
const char *name_b,
struct diff_filespec *one,
struct diff_filespec *two,
- const char *textconv_one,
- const char *textconv_two,
+ struct userdiff_driver *textconv_one,
+ struct userdiff_driver *textconv_two,
struct diff_options *o)
{
int lc_a, lc_b;
@@ -477,7 +479,7 @@ static void emit_rewrite_diff(const char *name_a,
const char *reset = diff_get_color(color_diff, DIFF_RESET);
static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT;
const char *a_prefix, *b_prefix;
- const char *data_one, *data_two;
+ char *data_one, *data_two;
size_t size_one, size_two;
struct emit_callback ecbdata;
@@ -499,26 +501,8 @@ static void emit_rewrite_diff(const char *name_a,
quote_two_c_style(&a_name, a_prefix, name_a, 0);
quote_two_c_style(&b_name, b_prefix, name_b, 0);
- diff_populate_filespec(one, 0);
- diff_populate_filespec(two, 0);
- if (textconv_one) {
- data_one = run_textconv(textconv_one, one, &size_one);
- if (!data_one)
- die("unable to read files to diff");
- }
- else {
- data_one = one->data;
- size_one = one->size;
- }
- if (textconv_two) {
- data_two = run_textconv(textconv_two, two, &size_two);
- if (!data_two)
- die("unable to read files to diff");
- }
- else {
- data_two = two->data;
- size_two = two->size;
- }
+ size_one = fill_textconv(textconv_one, one, &data_one);
+ size_two = fill_textconv(textconv_two, two, &data_two);
memset(&ecbdata, 0, sizeof(ecbdata));
ecbdata.color_diff = color_diff;
@@ -550,6 +534,10 @@ static void emit_rewrite_diff(const char *name_a,
emit_rewrite_lines(&ecbdata, '-', data_one, size_one);
if (lc_b)
emit_rewrite_lines(&ecbdata, '+', data_two, size_two);
+ if (textconv_one)
+ free((char *)data_one);
+ if (textconv_two)
+ free((char *)data_two);
}
struct diff_words_buffer {
@@ -695,7 +683,6 @@ static void diff_words_show(struct diff_words_data *diff_words)
{
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
mmfile_t minus, plus;
/* special case: only removal */
@@ -717,7 +704,7 @@ static void diff_words_show(struct diff_words_data *diff_words)
/* as only the hunk header will be parsed, we need a 0-context */
xecfg.ctxlen = 0;
xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, diff_words,
- &xpp, &xecfg, &ecb);
+ &xpp, &xecfg);
free(minus.ptr);
free(plus.ptr);
if (diff_words->current_plus != diff_words->plus.text.ptr +
@@ -948,7 +935,7 @@ struct diffstat_t {
unsigned is_unmerged:1;
unsigned is_binary:1;
unsigned is_renamed:1;
- unsigned int added, deleted;
+ uintmax_t added, deleted;
} **files;
};
@@ -1040,7 +1027,7 @@ static void fill_print_name(struct diffstat_file *file)
static void show_stats(struct diffstat_t *data, struct diff_options *options)
{
int i, len, add, del, adds = 0, dels = 0;
- int max_change = 0, max_len = 0;
+ uintmax_t max_change = 0, max_len = 0;
int total_files = data->nr;
int width, name_width;
const char *reset, *set, *add_c, *del_c;
@@ -1069,7 +1056,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
for (i = 0; i < data->nr; i++) {
struct diffstat_file *file = data->files[i];
- int change = file->added + file->deleted;
+ uintmax_t change = file->added + file->deleted;
fill_print_name(file);
len = strlen(file->print_name);
if (max_len < len)
@@ -1097,8 +1084,8 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
for (i = 0; i < data->nr; i++) {
const char *prefix = "";
char *name = data->files[i]->print_name;
- int added = data->files[i]->added;
- int deleted = data->files[i]->deleted;
+ uintmax_t added = data->files[i]->added;
+ uintmax_t deleted = data->files[i]->deleted;
int name_len;
/*
@@ -1119,9 +1106,11 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
if (data->files[i]->is_binary) {
show_name(options->file, prefix, name, len);
fprintf(options->file, " Bin ");
- fprintf(options->file, "%s%d%s", del_c, deleted, reset);
+ fprintf(options->file, "%s%"PRIuMAX"%s",
+ del_c, deleted, reset);
fprintf(options->file, " -> ");
- fprintf(options->file, "%s%d%s", add_c, added, reset);
+ fprintf(options->file, "%s%"PRIuMAX"%s",
+ add_c, added, reset);
fprintf(options->file, " bytes");
fprintf(options->file, "\n");
continue;
@@ -1150,7 +1139,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
del = scale_linear(del, width, max_change);
}
show_name(options->file, prefix, name, len);
- fprintf(options->file, "%5d%s", added + deleted,
+ fprintf(options->file, "%5"PRIuMAX"%s", added + deleted,
added + deleted ? " " : "");
show_graph(options->file, '+', add, add_c, reset);
show_graph(options->file, '-', del, del_c, reset);
@@ -1200,7 +1189,8 @@ static void show_numstat(struct diffstat_t *data, struct diff_options *options)
fprintf(options->file, "-\t-\t");
else
fprintf(options->file,
- "%d\t%d\t", file->added, file->deleted);
+ "%"PRIuMAX"\t%"PRIuMAX"\t",
+ file->added, file->deleted);
if (options->line_termination) {
fill_print_name(file);
if (!file->is_renamed)
@@ -1370,37 +1360,32 @@ static void free_diffstat_info(struct diffstat_t *diffstat)
struct checkdiff_t {
const char *filename;
int lineno;
+ int conflict_marker_size;
struct diff_options *o;
unsigned ws_rule;
unsigned status;
};
-static int is_conflict_marker(const char *line, unsigned long len)
+static int is_conflict_marker(const char *line, int marker_size, unsigned long len)
{
char firstchar;
int cnt;
- if (len < 8)
+ if (len < marker_size + 1)
return 0;
firstchar = line[0];
switch (firstchar) {
- case '=': case '>': case '<':
+ case '=': case '>': case '<': case '|':
break;
default:
return 0;
}
- for (cnt = 1; cnt < 7; cnt++)
+ for (cnt = 1; cnt < marker_size; cnt++)
if (line[cnt] != firstchar)
return 0;
- /* line[0] thru line[6] are same as firstchar */
- if (firstchar == '=') {
- /* divider between ours and theirs? */
- if (len != 8 || line[7] != '\n')
- return 0;
- } else if (len < 8 || !isspace(line[7])) {
- /* not divider before ours nor after theirs */
+ /* line[1] thru line[marker_size-1] are same as firstchar */
+ if (len < marker_size + 1 || !isspace(line[marker_size]))
return 0;
- }
return 1;
}
@@ -1408,6 +1393,7 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len)
{
struct checkdiff_t *data = priv;
int color_diff = DIFF_OPT_TST(data->o, COLOR_DIFF);
+ int marker_size = data->conflict_marker_size;
const char *ws = diff_get_color(color_diff, DIFF_WHITESPACE);
const char *reset = diff_get_color(color_diff, DIFF_RESET);
const char *set = diff_get_color(color_diff, DIFF_FILE_NEW);
@@ -1416,7 +1402,7 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len)
if (line[0] == '+') {
unsigned bad;
data->lineno++;
- if (is_conflict_marker(line + 1, len - 1)) {
+ if (is_conflict_marker(line + 1, marker_size, len - 1)) {
data->status |= 1;
fprintf(data->o->file,
"%s:%d: leftover conflict marker\n",
@@ -1582,14 +1568,26 @@ void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const
options->b_prefix = b;
}
-static const char *get_textconv(struct diff_filespec *one)
+static struct userdiff_driver *get_textconv(struct diff_filespec *one)
{
if (!DIFF_FILE_VALID(one))
return NULL;
if (!S_ISREG(one->mode))
return NULL;
diff_filespec_load_driver(one);
- return one->driver->textconv;
+ if (!one->driver->textconv)
+ return NULL;
+
+ if (one->driver->textconv_want_cache && !one->driver->textconv_cache) {
+ struct notes_cache *c = xmalloc(sizeof(*c));
+ struct strbuf name = STRBUF_INIT;
+
+ strbuf_addf(&name, "textconv/%s", one->driver->name);
+ notes_cache_init(c, name.buf, one->driver->textconv);
+ one->driver->textconv_cache = c;
+ }
+
+ return one->driver;
}
static void builtin_diff(const char *name_a,
@@ -1606,7 +1604,8 @@ static void builtin_diff(const char *name_a,
const char *set = diff_get_color_opt(o, DIFF_METAINFO);
const char *reset = diff_get_color_opt(o, DIFF_RESET);
const char *a_prefix, *b_prefix;
- const char *textconv_one = NULL, *textconv_two = NULL;
+ struct userdiff_driver *textconv_one = NULL;
+ struct userdiff_driver *textconv_two = NULL;
struct strbuf header = STRBUF_INIT;
if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
@@ -1680,12 +1679,11 @@ static void builtin_diff(const char *name_a,
}
}
- if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
- die("unable to read files to diff");
-
if (!DIFF_OPT_TST(o, TEXT) &&
- ( (diff_filespec_is_binary(one) && !textconv_one) ||
- (diff_filespec_is_binary(two) && !textconv_two) )) {
+ ( (!textconv_one && diff_filespec_is_binary(one)) ||
+ (!textconv_two && diff_filespec_is_binary(two)) )) {
+ if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
+ die("unable to read files to diff");
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
@@ -1704,7 +1702,6 @@ static void builtin_diff(const char *name_a,
const char *diffopts = getenv("GIT_DIFF_OPTS");
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
@@ -1713,20 +1710,8 @@ static void builtin_diff(const char *name_a,
strbuf_reset(&header);
}
- if (textconv_one) {
- size_t size;
- mf1.ptr = run_textconv(textconv_one, one, &size);
- if (!mf1.ptr)
- die("unable to read files to diff");
- mf1.size = size;
- }
- if (textconv_two) {
- size_t size;
- mf2.ptr = run_textconv(textconv_two, two, &size);
- if (!mf2.ptr)
- die("unable to read files to diff");
- mf2.size = size;
- }
+ mf1.size = fill_textconv(textconv_one, one, &mf1.ptr);
+ mf2.size = fill_textconv(textconv_two, two, &mf2.ptr);
pe = diff_funcname_pattern(one);
if (!pe)
@@ -1776,7 +1761,7 @@ static void builtin_diff(const char *name_a,
}
}
xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata,
- &xpp, &xecfg, &ecb);
+ &xpp, &xecfg);
if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS))
free_diff_words_data(&ecbdata);
if (textconv_one)
@@ -1829,13 +1814,12 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
- &xpp, &xecfg, &ecb);
+ &xpp, &xecfg);
}
free_and_return:
@@ -1860,6 +1844,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
data.lineno = 0;
data.o = o;
data.ws_rule = whitespace_rule(attr_path);
+ data.conflict_marker_size = ll_merge_marker_size(attr_path);
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
@@ -1876,14 +1861,13 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
xecfg.ctxlen = 1; /* at least one context line */
xpp.flags = XDF_NEED_MINIMAL;
xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data,
- &xpp, &xecfg, &ecb);
+ &xpp, &xecfg);
if (data.ws_rule & WS_BLANK_AT_EOF) {
struct emit_callback ecbdata;
@@ -2032,7 +2016,7 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
char *data = xmalloc(100), *dirty = "";
/* Are we looking at the work tree? */
- if (!s->sha1_valid && s->dirty_submodule)
+ if (s->dirty_submodule)
dirty = "-dirty";
len = snprintf(data, 100,
@@ -2628,6 +2612,12 @@ int diff_setup_done(struct diff_options *options)
*/
if (options->pickaxe)
DIFF_OPT_SET(options, RECURSIVE);
+ /*
+ * When patches are generated, submodules diffed against the work tree
+ * must be checked for dirtiness too so it can be shown in the output
+ */
+ if (options->output_format & DIFF_FORMAT_PATCH)
+ DIFF_OPT_SET(options, DIRTY_SUBMODULES);
if (options->detect_rename && options->rename_limit < 0)
options->rename_limit = diff_rename_limit_default;
@@ -2826,6 +2816,15 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_OPT_SET(options, FOLLOW_RENAMES);
else if (!strcmp(arg, "--color"))
DIFF_OPT_SET(options, COLOR_DIFF);
+ else if (!prefixcmp(arg, "--color=")) {
+ int value = git_config_colorbool(NULL, arg+8, -1);
+ if (value == 0)
+ DIFF_OPT_CLR(options, COLOR_DIFF);
+ else if (value > 0)
+ DIFF_OPT_SET(options, COLOR_DIFF);
+ else
+ return error("option `color' expects \"always\", \"auto\", or \"never\"");
+ }
else if (!strcmp(arg, "--no-color"))
DIFF_OPT_CLR(options, COLOR_DIFF);
else if (!strcmp(arg, "--color-words")) {
@@ -2893,6 +2892,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
;
else if (!prefixcmp(arg, "--output=")) {
options->file = fopen(arg + strlen("--output="), "w");
+ if (!options->file)
+ die_errno("Could not open '%s'", arg + strlen("--output="));
options->close_file = 1;
} else
return 0;
@@ -3075,7 +3076,8 @@ int diff_unmodified_pair(struct diff_filepair *p)
* dealing with a change.
*/
if (one->sha1_valid && two->sha1_valid &&
- !hashcmp(one->sha1, two->sha1))
+ !hashcmp(one->sha1, two->sha1) &&
+ !one->dirty_submodule && !two->dirty_submodule)
return 1; /* no change */
if (!one->sha1_valid && !two->sha1_valid)
return 1; /* both look at the same file on the filesystem. */
@@ -3210,6 +3212,8 @@ static void diff_resolve_rename_copy(void)
}
else if (hashcmp(p->one->sha1, p->two->sha1) ||
p->one->mode != p->two->mode ||
+ p->one->dirty_submodule ||
+ p->two->dirty_submodule ||
is_null_sha1(p->one->sha1))
p->status = DIFF_STATUS_MODIFIED;
else {
@@ -3358,7 +3362,6 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
for (i = 0; i < q->nr; i++) {
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
mmfile_t mf1, mf2;
struct diff_filepair *p = q->queue[i];
int len1, len2;
@@ -3420,7 +3423,7 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
xecfg.ctxlen = 3;
xecfg.flags = XDL_EMIT_FUNCNAMES;
xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data,
- &xpp, &xecfg, &ecb);
+ &xpp, &xecfg);
}
git_SHA1_Final(sha1, &ctx);
@@ -3520,6 +3523,29 @@ void diff_flush(struct diff_options *options)
separator++;
}
+ if (output_format & DIFF_FORMAT_NO_OUTPUT &&
+ DIFF_OPT_TST(options, EXIT_WITH_STATUS) &&
+ 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
+ * aren't supposed to produce any output anyway.
+ */
+ if (options->close_file)
+ fclose(options->file);
+ options->file = fopen("/dev/null", "w");
+ if (!options->file)
+ die_errno("Could not open /dev/null");
+ options->close_file = 1;
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+ if (check_pair_status(p))
+ diff_flush_patch(p, options);
+ if (options->found_changes)
+ break;
+ }
+ }
+
if (output_format & DIFF_FORMAT_PATCH) {
if (separator) {
putc(options->line_termination, options->file);
@@ -3642,7 +3668,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
struct diff_filepair *p = q->queue[i];
/*
- * 1. Entries that come from stat info dirtyness
+ * 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
@@ -3840,6 +3866,7 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
const char **arg = argv;
struct child_process child;
struct strbuf buf = STRBUF_INIT;
+ int err = 0;
temp = prepare_temp_file(spec->path, spec);
*arg++ = pgm;
@@ -3850,17 +3877,65 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
child.use_shell = 1;
child.argv = argv;
child.out = -1;
- if (start_command(&child) != 0 ||
- strbuf_read(&buf, child.out, 0) < 0 ||
- finish_command(&child) != 0) {
- close(child.out);
- strbuf_release(&buf);
+ if (start_command(&child)) {
remove_tempfile();
- error("error running textconv command '%s'", pgm);
return NULL;
}
+
+ if (strbuf_read(&buf, child.out, 0) < 0)
+ err = error("error reading from textconv command '%s'", pgm);
close(child.out);
+
+ if (finish_command(&child) || err) {
+ strbuf_release(&buf);
+ remove_tempfile();
+ return NULL;
+ }
remove_tempfile();
return strbuf_detach(&buf, outsize);
}
+
+static size_t fill_textconv(struct userdiff_driver *driver,
+ struct diff_filespec *df,
+ char **outbuf)
+{
+ size_t size;
+
+ if (!driver || !driver->textconv) {
+ if (!DIFF_FILE_VALID(df)) {
+ *outbuf = "";
+ return 0;
+ }
+ if (diff_populate_filespec(df, 0))
+ die("unable to read files to diff");
+ *outbuf = df->data;
+ return df->size;
+ }
+
+ if (driver->textconv_cache) {
+ *outbuf = notes_cache_get(driver->textconv_cache, df->sha1,
+ &size);
+ if (*outbuf)
+ return size;
+ }
+
+ *outbuf = run_textconv(driver->textconv, df, &size);
+ if (!*outbuf)
+ die("unable to read files to diff");
+
+ if (driver->textconv_cache) {
+ /* ignore errors, as we might be in a readonly repository */
+ notes_cache_put(driver->textconv_cache, df->sha1, *outbuf,
+ size);
+ /*
+ * we could save up changes and flush them all at the end,
+ * but we would need an extra call after all diffing is done.
+ * Since generating a cache entry is the slow path anyway,
+ * this extra overhead probably isn't a big deal.
+ */
+ notes_cache_write(driver->textconv_cache);
+ }
+
+ return size;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 02:27:22 +0000