#include "delta.h"
#include "xdiff-interface.h"
#include "color.h"
+#include "attr.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
die("bad config variable '%s'", var);
}
+static struct ll_diff_driver {
+ const char *name;
+ struct ll_diff_driver *next;
+ char *cmd;
+} *user_diff, **user_diff_tail;
+
+/*
+ * Currently there is only "diff.<drivername>.command" variable;
+ * because there are "diff.color.<slot>" variables, we are parsing
+ * this in a bit convoluted way to allow low level diff driver
+ * called "color".
+ */
+static int parse_lldiff_command(const char *var, const char *ep, const char *value)
+{
+ const char *name;
+ int namelen;
+ struct ll_diff_driver *drv;
+
+ name = var + 5;
+ namelen = ep - name;
+ for (drv = user_diff; drv; drv = drv->next)
+ if (!strncmp(drv->name, name, namelen) && !drv->name[namelen])
+ break;
+ if (!drv) {
+ char *namebuf;
+ drv = xcalloc(1, sizeof(struct ll_diff_driver));
+ namebuf = xmalloc(namelen + 1);
+ memcpy(namebuf, name, namelen);
+ namebuf[namelen] = 0;
+ drv->name = namebuf;
+ drv->next = NULL;
+ if (!user_diff_tail)
+ user_diff_tail = &user_diff;
+ *user_diff_tail = drv;
+ user_diff_tail = &(drv->next);
+ }
+
+ if (!value)
+ return error("%s: lacks value", var);
+ drv->cmd = strdup(value);
+ return 0;
+}
+
/*
* These are to give UI layer defaults.
* The core-level commands such as git-diff-files should
diff_detect_rename_default = DIFF_DETECT_RENAME;
return 0;
}
+ if (!prefixcmp(var, "diff.")) {
+ const char *ep = strrchr(var, '.');
+
+ if (ep != var + 4 && !strcmp(ep, ".command"))
+ return parse_lldiff_command(var, ep, value);
+ }
if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) {
int slot = parse_diff_color_slot(var, 11);
color_parse(value, var, diff_colors[slot]);
return 0;
}
+
return git_default_config(var, value);
}
int nparents, color_diff;
const char **label_path;
struct diff_words_data *diff_words;
+ int *found_changesp;
};
static void free_diff_words_data(struct emit_callback *ecbdata)
const char *set = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
+ *(ecbdata->found_changesp) = 1;
+
if (ecbdata->label_path[0]) {
const char *name_a_tab, *name_b_tab;
if (data->files[i]->is_binary) {
show_name(prefix, name, len, reset, set);
- printf(" Bin\n");
+ printf(" Bin ");
+ printf("%s%d%s", del_c, deleted, reset);
+ printf(" -> ");
+ printf("%s%d%s", add_c, added, reset);
+ printf(" bytes");
+ printf("\n");
goto free_diffstat_file;
}
else if (data->files[i]->is_unmerged) {
emit_binary_diff_body(two, one);
}
+static void setup_diff_attr_check(struct git_attr_check *check)
+{
+ static struct git_attr *attr_diff;
+
+ if (!attr_diff)
+ attr_diff = git_attr("diff", 4);
+ check->attr = attr_diff;
+}
+
#define FIRST_FEW_BYTES 8000
-static int mmfile_is_binary(mmfile_t *mf)
+static int file_is_binary(struct diff_filespec *one)
{
- long sz = mf->size;
+ unsigned long sz;
+ struct git_attr_check attr_diff_check;
+
+ setup_diff_attr_check(&attr_diff_check);
+ if (!git_checkattr(one->path, 1, &attr_diff_check)) {
+ const char *value = attr_diff_check.value;
+ if (ATTR_TRUE(value))
+ return 0;
+ else if (ATTR_FALSE(value))
+ return 1;
+ }
+
+ if (!one->data) {
+ if (!DIFF_FILE_VALID(one))
+ return 0;
+ diff_populate_filespec(one, 0);
+ }
+ sz = one->size;
if (FIRST_FEW_BYTES < sz)
sz = FIRST_FEW_BYTES;
- return !!memchr(mf->ptr, 0, sz);
+ return !!memchr(one->data, 0, sz);
}
static void builtin_diff(const char *name_a,
if (complete_rewrite) {
emit_rewrite_diff(name_a, name_b, one, two,
o->color_diff);
+ o->found_changes = 1;
goto free_ab_and_return;
}
}
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (!o->text && (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2))) {
+ if (!o->text && (file_is_binary(one) || file_is_binary(two))) {
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
else
printf("Binary files %s and %s differ\n",
lbl[0], lbl[1]);
+ o->found_changes = 1;
}
else {
/* Crazy xdl interfaces.. */
memset(&ecbdata, 0, sizeof(ecbdata));
ecbdata.label_path = lbl;
ecbdata.color_diff = o->color_diff;
+ ecbdata.found_changesp = &o->found_changes;
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
xecfg.ctxlen = o->context;
xecfg.flags = XDL_EMIT_FUNCNAMES;
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2))
+ if (file_is_binary(one) || file_is_binary(two)) {
data->is_binary = 1;
- else {
+ data->added = mf2.size;
+ data->deleted = mf1.size;
+ } else {
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (mmfile_is_binary(&mf2))
+ if (file_is_binary(two))
return;
else {
/* Crazy xdl interfaces.. */
return e;
}
+static int populate_from_stdin(struct diff_filespec *s)
+{
+#define INCREMENT 1024
+ char *buf;
+ unsigned long size;
+ int got;
+
+ size = 0;
+ buf = NULL;
+ while (1) {
+ buf = xrealloc(buf, size + INCREMENT);
+ got = xread(0, buf + size, INCREMENT);
+ if (!got)
+ break; /* EOF */
+ if (got < 0)
+ return error("error while reading from stdin %s",
+ strerror(errno));
+ size += got;
+ }
+ s->should_munmap = 0;
+ s->data = buf;
+ s->size = size;
+ s->should_free = 1;
+ return 0;
+}
+
+static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
+{
+ int len;
+ char *data = xmalloc(100);
+ len = snprintf(data, 100,
+ "Subproject commit %s\n", sha1_to_hex(s->sha1));
+ s->data = data;
+ s->size = len;
+ s->should_free = 1;
+ if (size_only) {
+ s->data = NULL;
+ free(data);
+ }
+ return 0;
+}
+
/*
* While doing rename detection and pickaxe operation, we may need to
* grab the data for the blob (or file) for our own in-core comparison.
if (s->data)
return err;
+
+ if (S_ISDIRLNK(s->mode))
+ return diff_populate_gitlink(s, size_only);
+
if (!s->sha1_valid ||
reuse_worktree_file(s->path, s->sha1, 0)) {
struct stat st;
char *buf;
unsigned long size;
+ if (!strcmp(s->path, "-"))
+ return populate_from_stdin(s);
+
if (lstat(s->path, &st) < 0) {
if (errno == ENOENT) {
err_empty:
return err;
}
}
- s->size = st.st_size;
+ s->size = xsize_t(st.st_size);
if (!s->size)
goto empty;
if (size_only)
/*
* Convert from working tree format to canonical git format
*/
- buf = s->data;
size = s->size;
- if (convert_to_git(s->path, &buf, &size)) {
+ buf = convert_to_git(s->path, s->data, &size);
+ if (buf) {
munmap(s->data, s->size);
s->should_munmap = 0;
s->data = buf;
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, st.st_size);
+ ret = readlink(name, buf, sz);
if (ret < 0)
die("readlink(%s)", name);
- prep_temp_blob(temp, buf, st.st_size,
+ prep_temp_blob(temp, buf, sz,
(one->sha1_valid ?
one->sha1 : null_sha1),
(one->sha1_valid ?
}
}
+static const char *external_diff_attr(const char *name)
+{
+ struct git_attr_check attr_diff_check;
+
+ setup_diff_attr_check(&attr_diff_check);
+ if (!git_checkattr(name, 1, &attr_diff_check)) {
+ const char *value = attr_diff_check.value;
+ if (!ATTR_TRUE(value) &&
+ !ATTR_FALSE(value) &&
+ !ATTR_UNSET(value)) {
+ struct ll_diff_driver *drv;
+
+ if (!user_diff_tail) {
+ user_diff_tail = &user_diff;
+ git_config(git_diff_ui_config);
+ }
+ for (drv = user_diff; drv; drv = drv->next)
+ if (!strcmp(drv->name, value))
+ return drv->cmd;
+ }
+ }
+ return NULL;
+}
+
static void run_diff_cmd(const char *pgm,
const char *name,
const char *other,
struct diff_options *o,
int complete_rewrite)
{
+ if (!o->allow_external)
+ pgm = NULL;
+ else {
+ const char *cmd = external_diff_attr(name);
+ if (cmd)
+ pgm = cmd;
+ }
+
if (pgm) {
run_external_diff(pgm, name, other, one, two, xfrm_msg,
complete_rewrite);
if (DIFF_FILE_VALID(one)) {
if (!one->sha1_valid) {
struct stat st;
+ if (!strcmp(one->path, "-")) {
+ hashcpy(one->sha1, null_sha1);
+ return;
+ }
if (lstat(one->path, &st) < 0)
die("stat %s", one->path);
if (index_path(one->sha1, one->path, &st, 0))
if (o->binary) {
mmfile_t mf;
- if ((!fill_mmfile(&mf, one) && mmfile_is_binary(&mf)) ||
- (!fill_mmfile(&mf, two) && mmfile_is_binary(&mf)))
+ if ((!fill_mmfile(&mf, one) && file_is_binary(one)) ||
+ (!fill_mmfile(&mf, two) && file_is_binary(two)))
abbrev = 40;
}
len += snprintf(msg + len, sizeof(msg) - len,
if (options->abbrev <= 0 || 40 < options->abbrev)
options->abbrev = 40; /* full */
+ /*
+ * It does not make sense to show the first hit we happened
+ * to have found. It does not make sense not to return with
+ * exit code in such a case either.
+ */
+ if (options->quiet) {
+ options->output_format = DIFF_FORMAT_NO_OUTPUT;
+ options->exit_with_status = 1;
+ }
+
+ /*
+ * If we postprocess in diffcore, we cannot simply return
+ * upon the first hit. We need to run diff as usual.
+ */
+ if (options->pickaxe || options->filter)
+ options->quiet = 0;
+
return 0;
}
options->color_diff = options->color_diff_words = 1;
else if (!strcmp(arg, "--no-renames"))
options->detect_rename = 0;
+ else if (!strcmp(arg, "--exit-code"))
+ options->exit_with_status = 1;
+ else if (!strcmp(arg, "--quiet"))
+ options->quiet = 1;
else
return 0;
return 1;
/* user says num divided by scale and we say internally that
* is MAX_SCORE * num / scale.
*/
- return (num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale);
+ return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale));
}
int diff_scoreopt_parse(const char *opt)
p->status = DIFF_STATUS_RENAMED;
}
else if (hashcmp(p->one->sha1, p->two->sha1) ||
- p->one->mode != p->two->mode)
+ p->one->mode != p->two->mode ||
+ is_null_sha1(p->one->sha1))
p->status = DIFF_STATUS_MODIFIED;
else {
/* This is a "no-change" entry and should not
return error("unable to read files to diff");
/* Maybe hash p->two? into the patch id? */
- if (mmfile_is_binary(&mf2))
+ if (file_is_binary(p->two))
continue;
len1 = remove_space(p->one->path, strlen(p->one->path));
void diffcore_std(struct diff_options *options)
{
+ if (options->quiet)
+ return;
if (options->break_opt != -1)
diffcore_break(options->break_opt);
if (options->detect_rename)
diffcore_order(options->orderfile);
diff_resolve_rename_copy();
diffcore_apply_filter(options->filter);
-}
-
-void diffcore_std_no_resolve(struct diff_options *options)
-{
- if (options->pickaxe)
- diffcore_pickaxe(options->pickaxe, options->pickaxe_opts);
- if (options->orderfile)
- diffcore_order(options->orderfile);
- diffcore_apply_filter(options->filter);
+ options->has_changes = !!diff_queued_diff.nr;
}
+
void diff_addremove(struct diff_options *options,
int addremove, unsigned mode,
const unsigned char *sha1,
fill_filespec(two, sha1, mode);
diff_queue(&diff_queued_diff, one, two);
+ options->has_changes = 1;
}
void diff_change(struct diff_options *options,
fill_filespec(two, new_sha1, new_mode);
diff_queue(&diff_queued_diff, one, two);
+ options->has_changes = 1;
}
void diff_unmerge(struct diff_options *options,
projects / git.git / blobdiff