#include "run-command.h"
#include "utf8.h"
#include "userdiff.h"
+#include "sigchain.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
if (!strcmp(var, "diff.external"))
return git_config_string(&external_diff_cmd_cfg, var, value);
- switch (userdiff_config_porcelain(var, value)) {
- case 0: break;
- case -1: return -1;
- default: return 0;
- }
-
return git_diff_basic_config(var, value, cb);
}
return 0;
}
+ switch (userdiff_config(var, value)) {
+ case 0: break;
+ case -1: return -1;
+ default: return 0;
+ }
+
if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) {
int slot = parse_diff_color_slot(var, 11);
if (!value)
return 0;
}
- switch (userdiff_config_basic(var, value)) {
- case 0: break;
- case -1: return -1;
- default: return 0;
- }
-
return git_color_default_config(var, value, cb);
}
char tmp_path[PATH_MAX];
} diff_temp[2];
+static struct diff_tempfile *claim_diff_tempfile(void) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(diff_temp); i++)
+ if (!diff_temp[i].name)
+ return diff_temp + i;
+ die("BUG: diff is failing to clean up its tempfiles");
+}
+
+static int remove_tempfile_installed;
+
+static void remove_tempfile(void)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(diff_temp); i++)
+ if (diff_temp[i].name == diff_temp[i].tmp_path) {
+ unlink(diff_temp[i].name);
+ diff_temp[i].name = NULL;
+ }
+}
+
+static void remove_tempfile_on_signal(int signo)
+{
+ remove_tempfile();
+ sigchain_pop(signo);
+ raise(signo);
+}
+
static int count_lines(const char *data, int size)
{
int count, ch, completely_empty = 1, nl_just_seen = 0;
const char *name_b,
struct diff_filespec *one,
struct diff_filespec *two,
+ const char *textconv_one,
+ const char *textconv_two,
struct diff_options *o)
{
int lc_a, lc_b;
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;
+ size_t size_one, size_two;
if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
a_prefix = o->b_prefix;
diff_populate_filespec(one, 0);
diff_populate_filespec(two, 0);
- lc_a = count_lines(one->data, one->size);
- lc_b = count_lines(two->data, two->size);
+ 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;
+ }
+
+ lc_a = count_lines(data_one, size_one);
+ lc_b = count_lines(data_two, size_two);
fprintf(o->file,
"%s--- %s%s%s\n%s+++ %s%s%s\n%s@@ -",
metainfo, a_name.buf, name_a_tab, reset,
print_line_count(o->file, lc_b);
fprintf(o->file, " @@%s\n", reset);
if (lc_a)
- copy_file_with_prefix(o->file, '-', one->data, one->size, old, reset);
+ copy_file_with_prefix(o->file, '-', data_one, size_one, old, reset);
if (lc_b)
- copy_file_with_prefix(o->file, '+', two->data, two->size, new, reset);
+ copy_file_with_prefix(o->file, '+', data_two, size_two, new, reset);
}
static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
else if (diff_populate_filespec(one, 0))
return -1;
- diff_filespec_load_driver(one);
- if (one->driver->textconv) {
- size_t size;
- mf->ptr = run_textconv(one->driver->textconv, one, &size);
- if (!mf->ptr)
- return -1;
- mf->size = size;
- }
- else {
- mf->ptr = one->data;
- mf->size = one->size;
- }
+ mf->ptr = one->data;
+ mf->size = one->size;
return 0;
}
mmfile_t minus, plus;
int i;
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
minus.size = diff_words->minus.text.size;
minus.ptr = xmalloc(minus.size);
emit_binary_diff_body(file, two, one);
}
-void diff_filespec_load_driver(struct diff_filespec *one)
+static void diff_filespec_load_driver(struct diff_filespec *one)
{
if (!one->driver)
one->driver = userdiff_find_by_path(one->path);
options->b_prefix = b;
}
+static const char *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;
+}
+
static void builtin_diff(const char *name_a,
const char *name_b,
struct diff_filespec *one,
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;
+
+ if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
+ textconv_one = get_textconv(one);
+ textconv_two = get_textconv(two);
+ }
diff_set_mnemonic_prefix(o, "a/", "b/");
if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
*/
if ((one->mode ^ two->mode) & S_IFMT)
goto free_ab_and_return;
- if (complete_rewrite) {
- emit_rewrite_diff(name_a, name_b, one, two, o);
+ if (complete_rewrite &&
+ (textconv_one || !diff_filespec_is_binary(one)) &&
+ (textconv_two || !diff_filespec_is_binary(two))) {
+ emit_rewrite_diff(name_a, name_b, one, two,
+ textconv_one, textconv_two, o);
o->found_changes = 1;
goto free_ab_and_return;
}
die("unable to read files to diff");
if (!DIFF_OPT_TST(o, TEXT) &&
- (diff_filespec_is_binary(one) || diff_filespec_is_binary(two))) {
+ ( (diff_filespec_is_binary(one) && !textconv_one) ||
+ (diff_filespec_is_binary(two) && !textconv_two) )) {
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
+ 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;
+ }
+
pe = diff_funcname_pattern(one);
if (!pe)
pe = diff_funcname_pattern(two);
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
memset(&ecbdata, 0, sizeof(ecbdata));
ecbdata.label_path = lbl;
ecbdata.file = o->file;
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
xecfg.ctxlen = o->context;
+ xecfg.interhunkctxlen = o->interhunkcontext;
xecfg.flags = XDL_EMIT_FUNCNAMES;
if (pe)
xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
&xpp, &xecfg, &ecb);
if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS))
free_diff_words_data(&ecbdata);
+ if (textconv_one)
+ free(mf1.ptr);
+ if (textconv_two)
+ free(mf2.ptr);
}
free_ab_and_return:
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,
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;
s->size = xsize_t(st.st_size);
if (!s->size)
goto empty;
- if (size_only)
- return 0;
if (S_ISLNK(st.st_mode)) {
- int ret;
- s->data = xmalloc(s->size);
- s->should_free = 1;
- ret = readlink(s->path, s->data, s->size);
- if (ret < 0) {
- free(s->data);
+ struct strbuf sb = STRBUF_INIT;
+
+ if (strbuf_readlink(&sb, s->path, s->size))
goto err_empty;
- }
+ s->size = sb.len;
+ s->data = strbuf_detach(&sb, NULL);
+ s->should_free = 1;
return 0;
}
+ if (size_only)
+ return 0;
fd = open(s->path, O_RDONLY);
if (fd < 0)
goto err_empty;
sprintf(temp->mode, "%06o", mode);
}
-static void prepare_temp_file(const char *name,
- struct diff_tempfile *temp,
- struct diff_filespec *one)
+static struct diff_tempfile *prepare_temp_file(const char *name,
+ struct diff_filespec *one)
{
+ struct diff_tempfile *temp = claim_diff_tempfile();
+
if (!DIFF_FILE_VALID(one)) {
not_a_valid_file:
/* A '-' entry produces this for file-2, and
temp->name = "/dev/null";
strcpy(temp->hex, ".");
strcpy(temp->mode, ".");
- return;
+ return temp;
+ }
+
+ if (!remove_tempfile_installed) {
+ atexit(remove_tempfile);
+ sigchain_push_common(remove_tempfile_on_signal);
+ remove_tempfile_installed = 1;
}
if (!one->sha1_valid ||
if (S_ISLNK(st.st_mode)) {
int ret;
char buf[PATH_MAX + 1]; /* ought to be SYMLINK_MAX */
- size_t sz = xsize_t(st.st_size);
- if (sizeof(buf) <= st.st_size)
- die("symlink too long: %s", name);
- ret = readlink(name, buf, sz);
+ ret = readlink(name, buf, sizeof(buf));
if (ret < 0)
die("readlink(%s)", name);
- prep_temp_blob(temp, buf, sz,
+ if (ret == sizeof(buf))
+ die("symlink too long: %s", name);
+ prep_temp_blob(temp, buf, ret,
(one->sha1_valid ?
one->sha1 : null_sha1),
(one->sha1_valid ?
*/
sprintf(temp->mode, "%06o", one->mode);
}
- return;
+ return temp;
}
else {
if (diff_populate_filespec(one, 0))
prep_temp_blob(temp, one->data, one->size,
one->sha1, one->mode);
}
-}
-
-static void remove_tempfile(void)
-{
- int i;
-
- for (i = 0; i < 2; i++)
- if (diff_temp[i].name == diff_temp[i].tmp_path) {
- unlink(diff_temp[i].name);
- diff_temp[i].name = NULL;
- }
-}
-
-static void remove_tempfile_on_signal(int signo)
-{
- remove_tempfile();
- signal(SIGINT, SIG_DFL);
- raise(signo);
+ return temp;
}
/* An external diff command takes:
int complete_rewrite)
{
const char *spawn_arg[10];
- struct diff_tempfile *temp = diff_temp;
int retval;
- static int atexit_asked = 0;
- const char *othername;
const char **arg = &spawn_arg[0];
- othername = (other? other : name);
- if (one && two) {
- prepare_temp_file(name, &temp[0], one);
- prepare_temp_file(othername, &temp[1], two);
- if (! atexit_asked &&
- (temp[0].name == temp[0].tmp_path ||
- temp[1].name == temp[1].tmp_path)) {
- atexit_asked = 1;
- atexit(remove_tempfile);
- }
- signal(SIGINT, remove_tempfile_on_signal);
- }
-
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[0].name;
- *arg++ = temp[0].hex;
- *arg++ = temp[0].mode;
- *arg++ = temp[1].name;
- *arg++ = temp[1].hex;
- *arg++ = temp[1].mode;
+ *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;
if (lstat(one->path, &st) < 0)
die("stat %s", one->path);
if (index_path(one->sha1, one->path, &st, 0))
- die("cannot hash %s\n", one->path);
+ die("cannot hash %s", one->path);
}
}
else
DIFF_OPT_SET(options, ALLOW_EXTERNAL);
else if (!strcmp(arg, "--no-ext-diff"))
DIFF_OPT_CLR(options, ALLOW_EXTERNAL);
+ else if (!strcmp(arg, "--textconv"))
+ DIFF_OPT_SET(options, ALLOW_TEXTCONV);
+ else if (!strcmp(arg, "--no-textconv"))
+ DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
else if (!strcmp(arg, "--ignore-submodules"))
DIFF_OPT_SET(options, IGNORE_SUBMODULES);
options->b_prefix = arg + 13;
else if (!strcmp(arg, "--no-prefix"))
options->a_prefix = options->b_prefix = "";
+ else if (opt_arg(arg, '\0', "inter-hunk-context",
+ &options->interhunkcontext))
+ ;
else if (!prefixcmp(arg, "--output=")) {
options->file = fopen(arg + strlen("--output="), "w");
options->close_file = 1;
struct diff_filepair *p = q->queue[i];
int len1, len2;
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
if (p->status == 0)
return error("internal diff status error");
static char *run_textconv(const char *pgm, struct diff_filespec *spec,
size_t *outsize)
{
- struct diff_tempfile temp;
+ struct diff_tempfile *temp;
const char *argv[3];
const char **arg = argv;
struct child_process child;
struct strbuf buf = STRBUF_INIT;
- prepare_temp_file(spec->path, &temp, spec);
+ temp = prepare_temp_file(spec->path, spec);
*arg++ = pgm;
- *arg++ = temp.name;
+ *arg++ = temp->name;
*arg = NULL;
memset(&child, 0, sizeof(child));
if (start_command(&child) != 0 ||
strbuf_read(&buf, child.out, 0) < 0 ||
finish_command(&child) != 0) {
- if (temp.name == temp.tmp_path)
- unlink(temp.name);
+ remove_tempfile();
error("error running textconv command '%s'", pgm);
return NULL;
}
- if (temp.name == temp.tmp_path)
- unlink(temp.name);
+ remove_tempfile();
return strbuf_detach(&buf, outsize);
}