#include "delta.h"
#include "xdiff-interface.h"
#include "color.h"
+#include "attr.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
#define FAST_WORKING_DIRECTORY 1
#endif
-static int use_size_cache;
-
static int diff_detect_rename_default;
-static int diff_rename_limit_default = -1;
+static int diff_rename_limit_default = 100;
static int diff_use_color_default;
+int diff_auto_refresh_index = 1;
static char diff_colors[][COLOR_MAXLEN] = {
"\033[m", /* reset */
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;
+
+static void read_config_if_needed(void)
+{
+ if (!user_diff_tail) {
+ user_diff_tail = &user_diff;
+ git_config(git_diff_ui_config);
+ }
+}
+
+/*
+ * 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;
+}
+
+/*
+ * 'diff.<what>.funcname' attribute can be specified in the configuration
+ * to define a customized regexp to find the beginning of a function to
+ * be used for hunk header lines of "diff -p" style output.
+ */
+static struct funcname_pattern {
+ char *name;
+ char *pattern;
+ struct funcname_pattern *next;
+} *funcname_pattern_list;
+
+static int parse_funcname_pattern(const char *var, const char *ep, const char *value)
+{
+ const char *name;
+ int namelen;
+ struct funcname_pattern *pp;
+
+ name = var + 5; /* "diff." */
+ namelen = ep - name;
+
+ for (pp = funcname_pattern_list; pp; pp = pp->next)
+ if (!strncmp(pp->name, name, namelen) && !pp->name[namelen])
+ break;
+ if (!pp) {
+ char *namebuf;
+ pp = xcalloc(1, sizeof(*pp));
+ namebuf = xmalloc(namelen + 1);
+ memcpy(namebuf, name, namelen);
+ namebuf[namelen] = 0;
+ pp->name = namebuf;
+ pp->next = funcname_pattern_list;
+ funcname_pattern_list = pp;
+ }
+ if (pp->pattern)
+ free(pp->pattern);
+ pp->pattern = xstrdup(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 (!strcmp(var, "diff.autorefreshindex")) {
+ diff_auto_refresh_index = git_config_bool(var, value);
+ return 0;
+ }
+ if (!prefixcmp(var, "diff.")) {
+ const char *ep = strrchr(var, '.');
+
+ if (ep != var + 4) {
+ if (!strcmp(ep, ".command"))
+ return parse_lldiff_command(var, ep, value);
+ if (!strcmp(ep, ".funcname"))
+ return parse_funcname_pattern(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);
}
return external_diff_cmd;
}
-#define TEMPFILE_PATH_LEN 50
-
static struct diff_tempfile {
const char *name; /* filename external diff should read from */
char hex[41];
char mode[10];
- char tmp_path[TEMPFILE_PATH_LEN];
+ char tmp_path[PATH_MAX];
} diff_temp[2];
static int count_lines(const char *data, int size)
const char *new = diff_get_color(color_diff, DIFF_FILE_NEW);
const char *reset = diff_get_color(color_diff, DIFF_RESET);
+ name_a += (*name_a == '/');
+ name_b += (*name_b == '/');
name_a_tab = strchr(name_a, ' ') ? "\t" : "";
name_b_tab = strchr(name_b, ' ') ? "\t" : "";
mmfile_t minus, plus;
int i;
+ memset(&xecfg, 0, sizeof(xecfg));
minus.size = diff_words->minus.text.size;
minus.ptr = xmalloc(minus.size);
memcpy(minus.ptr, diff_words->minus.text.ptr, minus.size);
xpp.flags = XDF_NEED_MINIMAL;
xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc;
- xecfg.flags = 0;
ecb.outf = xdiff_outf;
ecb.priv = diff_words;
diff_words->xm.consume = fn_out_diff_words_aux;
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);
}
-#define FIRST_FEW_BYTES 8000
-static int mmfile_is_binary(mmfile_t *mf)
+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[0].attr = attr_diff;
+}
+
+static void diff_filespec_check_attr(struct diff_filespec *one)
+{
+ struct git_attr_check attr_diff_check;
+ int check_from_data = 0;
+
+ if (one->checked_attr)
+ return;
+
+ setup_diff_attr_check(&attr_diff_check);
+ one->is_binary = 0;
+ one->funcname_pattern_ident = NULL;
+
+ if (!git_checkattr(one->path, 1, &attr_diff_check)) {
+ const char *value;
+
+ /* binaryness */
+ value = attr_diff_check.value;
+ if (ATTR_TRUE(value))
+ ;
+ else if (ATTR_FALSE(value))
+ one->is_binary = 1;
+ else
+ check_from_data = 1;
+
+ /* funcname pattern ident */
+ if (ATTR_TRUE(value) || ATTR_FALSE(value) || ATTR_UNSET(value))
+ ;
+ else
+ one->funcname_pattern_ident = value;
+ }
+
+ if (check_from_data) {
+ if (!one->data && DIFF_FILE_VALID(one))
+ diff_populate_filespec(one, 0);
+
+ if (one->data)
+ one->is_binary = buffer_is_binary(one->data, one->size);
+ }
+}
+
+int diff_filespec_is_binary(struct diff_filespec *one)
+{
+ diff_filespec_check_attr(one);
+ return one->is_binary;
+}
+
+static const char *funcname_pattern(const char *ident)
+{
+ struct funcname_pattern *pp;
+
+ read_config_if_needed();
+ for (pp = funcname_pattern_list; pp; pp = pp->next)
+ if (!strcmp(ident, pp->name))
+ return pp->pattern;
+ return NULL;
+}
+
+static struct builtin_funcname_pattern {
+ const char *name;
+ const char *pattern;
+} builtin_funcname_pattern[] = {
+ { "java", "!^[ ]*\\(catch\\|do\\|for\\|if\\|instanceof\\|"
+ "new\\|return\\|switch\\|throw\\|while\\)\n"
+ "^[ ]*\\(\\([ ]*"
+ "[A-Za-z_][A-Za-z_0-9]*\\)\\{2,\\}"
+ "[ ]*([^;]*$\\)" },
+ { "tex", "^\\(\\\\\\(sub\\)*section{.*\\)$" },
+};
+
+static const char *diff_funcname_pattern(struct diff_filespec *one)
{
- long sz = mf->size;
- if (FIRST_FEW_BYTES < sz)
- sz = FIRST_FEW_BYTES;
- return !!memchr(mf->ptr, 0, sz);
+ const char *ident, *pattern;
+ int i;
+
+ diff_filespec_check_attr(one);
+ ident = one->funcname_pattern_ident;
+
+ if (!ident)
+ /*
+ * If the config file has "funcname.default" defined, that
+ * regexp is used; otherwise NULL is returned and xemit uses
+ * the built-in default.
+ */
+ return funcname_pattern("default");
+
+ /* Look up custom "funcname.$ident" regexp from config. */
+ pattern = funcname_pattern(ident);
+ if (pattern)
+ return pattern;
+
+ /*
+ * And define built-in fallback patterns here. Note that
+ * these can be overriden by the user's config settings.
+ */
+ for (i = 0; i < ARRAY_SIZE(builtin_funcname_pattern); i++)
+ if (!strcmp(ident, builtin_funcname_pattern[i].name))
+ return builtin_funcname_pattern[i].pattern;
+
+ return NULL;
}
static void builtin_diff(const char *name_a,
const char *set = diff_get_color(o->color_diff, DIFF_METAINFO);
const char *reset = diff_get_color(o->color_diff, DIFF_RESET);
- a_one = quote_two("a/", name_a);
- b_two = quote_two("b/", name_b);
+ a_one = quote_two("a/", name_a + (*name_a == '/'));
+ b_two = quote_two("b/", name_b + (*name_b == '/'));
lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null";
lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null";
printf("%sdiff --git %s %s%s\n", set, a_one, b_two, reset);
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 &&
+ (diff_filespec_is_binary(one) || diff_filespec_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.. */
xdemitconf_t xecfg;
xdemitcb_t ecb;
struct emit_callback ecbdata;
+ const char *funcname_pattern;
+ funcname_pattern = diff_funcname_pattern(one);
+ if (!funcname_pattern)
+ funcname_pattern = diff_funcname_pattern(two);
+
+ memset(&xecfg, 0, sizeof(xecfg));
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 (funcname_pattern)
+ xdiff_set_find_func(&xecfg, funcname_pattern);
if (!diffopts)
;
else if (!prefixcmp(diffopts, "--unified="))
}
free_ab_and_return:
+ diff_free_filespec_data(one);
+ diff_free_filespec_data(two);
free(a_one);
free(b_two);
return;
diff_populate_filespec(two, 0);
data->deleted = count_lines(one->data, one->size);
data->added = count_lines(two->data, two->size);
- return;
+ goto free_and_return;
}
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 (diff_filespec_is_binary(one) || diff_filespec_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;
xdemitcb_t ecb;
+ memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
- xecfg.ctxlen = 0;
- xecfg.flags = 0;
ecb.outf = xdiff_outf;
ecb.priv = diffstat;
xdl_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
}
+
+ free_and_return:
+ diff_free_filespec_data(one);
+ diff_free_filespec_data(two);
}
static void builtin_checkdiff(const char *name_a, const char *name_b,
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (mmfile_is_binary(&mf2))
- return;
+ if (diff_filespec_is_binary(two))
+ goto free_and_return;
else {
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
xdemitcb_t ecb;
+ memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = XDF_NEED_MINIMAL;
- xecfg.ctxlen = 0;
- xecfg.flags = 0;
ecb.outf = xdiff_outf;
ecb.priv = &data;
xdl_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
}
+ free_and_return:
+ diff_free_filespec_data(one);
+ diff_free_filespec_data(two);
}
struct diff_filespec *alloc_filespec(const char *path)
}
/*
- * Given a name and sha1 pair, if the dircache tells us the file in
+ * Given a name and sha1 pair, if the index tells us the file in
* the work tree has that object contents, return true, so that
* prepare_temp_file() does not have to inflate and extract.
*/
return 1;
}
-static struct sha1_size_cache {
- unsigned char sha1[20];
+static int populate_from_stdin(struct diff_filespec *s)
+{
+#define INCREMENT 1024
+ char *buf;
unsigned long size;
-} **sha1_size_cache;
-static int sha1_size_cache_nr, sha1_size_cache_alloc;
-
-static struct sha1_size_cache *locate_size_cache(unsigned char *sha1,
- int find_only,
- unsigned long size)
-{
- int first, last;
- struct sha1_size_cache *e;
-
- first = 0;
- last = sha1_size_cache_nr;
- while (last > first) {
- int cmp, next = (last + first) >> 1;
- e = sha1_size_cache[next];
- cmp = hashcmp(e->sha1, sha1);
- if (!cmp)
- return e;
- if (cmp < 0) {
- last = next;
- continue;
- }
- first = next+1;
+ ssize_t 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);
}
- /* not found */
- if (find_only)
- return NULL;
- /* insert to make it at "first" */
- if (sha1_size_cache_alloc <= sha1_size_cache_nr) {
- sha1_size_cache_alloc = alloc_nr(sha1_size_cache_alloc);
- sha1_size_cache = xrealloc(sha1_size_cache,
- sha1_size_cache_alloc *
- sizeof(*sha1_size_cache));
- }
- sha1_size_cache_nr++;
- if (first < sha1_size_cache_nr)
- memmove(sha1_size_cache + first + 1, sha1_size_cache + first,
- (sha1_size_cache_nr - first - 1) *
- sizeof(*sha1_size_cache));
- e = xmalloc(sizeof(struct sha1_size_cache));
- sha1_size_cache[first] = e;
- hashcpy(e->sha1, sha1);
- e->size = size;
- return e;
+ return 0;
}
/*
if (S_ISDIR(s->mode))
return -1;
- if (!use_size_cache)
- size_only = 0;
-
if (s->data)
- return err;
+ return 0;
+
+ if (size_only && 0 < s->size)
+ return 0;
+
+ if (S_ISGITLINK(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;
}
}
else {
- char type[20];
- struct sha1_size_cache *e;
-
- if (size_only) {
- e = locate_size_cache(s->sha1, 1, 0);
- if (e) {
- s->size = e->size;
- return 0;
- }
- if (!sha1_object_info(s->sha1, type, &s->size))
- locate_size_cache(s->sha1, 0, s->size);
- }
+ enum object_type type;
+ if (size_only)
+ type = sha1_object_info(s->sha1, &s->size);
else {
- s->data = read_sha1_file(s->sha1, type, &s->size);
+ s->data = read_sha1_file(s->sha1, &type, &s->size);
s->should_free = 1;
}
}
free(s->data);
else if (s->should_munmap)
munmap(s->data, s->size);
- s->should_free = s->should_munmap = 0;
- s->data = NULL;
+
+ if (s->should_free || s->should_munmap) {
+ s->should_free = s->should_munmap = 0;
+ s->data = NULL;
+ }
free(s->cnt_data);
s->cnt_data = NULL;
}
{
int fd;
- fd = git_mkstemp(temp->tmp_path, TEMPFILE_PATH_LEN, ".diff_XXXXXX");
+ fd = git_mkstemp(temp->tmp_path, PATH_MAX, ".diff_XXXXXX");
if (fd < 0)
- die("unable to create temp-file");
+ die("unable to create temp-file: %s", strerror(errno));
if (write_in_full(fd, blob, size) != size)
die("unable to write temp-file");
close(fd);
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;
+
+ read_config_if_needed();
+ 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))
hashclr(one->sha1);
}
+static int similarity_index(struct diff_filepair *p)
+{
+ return p->score * 100 / MAX_SCORE;
+}
+
static void run_diff(struct diff_filepair *p, struct diff_options *o)
{
const char *pgm = external_diff();
"similarity index %d%%\n"
"copy from %s\n"
"copy to %s\n",
- (int)(0.5 + p->score * 100.0/MAX_SCORE),
- name_munged, other_munged);
+ similarity_index(p), name_munged, other_munged);
break;
case DIFF_STATUS_RENAMED:
len += snprintf(msg + len, sizeof(msg) - len,
"similarity index %d%%\n"
"rename from %s\n"
"rename to %s\n",
- (int)(0.5 + p->score * 100.0/MAX_SCORE),
- name_munged, other_munged);
+ similarity_index(p), name_munged, other_munged);
break;
case DIFF_STATUS_MODIFIED:
if (p->score) {
len += snprintf(msg + len, sizeof(msg) - len,
"dissimilarity index %d%%\n",
- (int)(0.5 + p->score *
- 100.0/MAX_SCORE));
+ similarity_index(p));
complete_rewrite = 1;
break;
}
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) && diff_filespec_is_binary(one)) ||
+ (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
abbrev = 40;
}
len += snprintf(msg + len, sizeof(msg) - len,
*/
read_cache();
}
- if (options->setup & DIFF_SETUP_USE_SIZE_CACHE)
- use_size_cache = 1;
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;
}
return 1;
}
+static int diff_scoreopt_parse(const char *opt);
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
options->detect_rename = DIFF_DETECT_RENAME;
}
else if (!prefixcmp(arg, "-C")) {
+ if (options->detect_rename == DIFF_DETECT_COPY)
+ options->find_copies_harder = 1;
if ((options->rename_score =
diff_scoreopt_parse(arg)) == -1)
return -1;
}
else if (!strcmp(arg, "--find-copies-harder"))
options->find_copies_harder = 1;
+ else if (!strcmp(arg, "--follow"))
+ options->follow_renames = 1;
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DEFAULT_ABBREV;
else if (!prefixcmp(arg, "--abbrev=")) {
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 if (!strcmp(arg, "--ext-diff"))
+ options->allow_external = 1;
+ else if (!strcmp(arg, "--no-ext-diff"))
+ options->allow_external = 0;
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)
+static int diff_scoreopt_parse(const char *opt)
{
int opt1, opt2, cmd;
}
if (p->score)
- sprintf(status, "%c%03d", p->status,
- (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ sprintf(status, "%c%03d", p->status, similarity_index(p));
else {
status[0] = p->status;
status[1] = 0;
printf("%s ",
diff_unique_abbrev(p->two->sha1, abbrev));
}
- printf("%s%c%s", status, inter_name_termination, path_one);
+ printf("%s%c%s", status, inter_name_termination,
+ two_paths || p->one->mode ? path_one : path_two);
if (two_paths)
printf("%c%s", inter_name_termination, path_two);
putchar(line_termination);
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
{
char *names = pprint_rename(p->one->path, p->two->path);
- printf(" %s %s (%d%%)\n", renamecopy, names,
- (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ printf(" %s %s (%d%%)\n", renamecopy, names, similarity_index(p));
free(names);
show_mode_change(p, 0);
}
if (p->score) {
char *name = quote_one(p->two->path);
printf(" rewrite %s (%d%%)\n", name,
- (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ similarity_index(p));
free(name);
show_mode_change(p, 0);
} else show_mode_change(p, 1);
struct diff_filepair *p = q->queue[i];
int len1, len2;
+ memset(&xecfg, 0, sizeof(xecfg));
if (p->status == 0)
return error("internal diff status error");
if (p->status == DIFF_STATUS_UNKNOWN)
fill_mmfile(&mf2, p->two) < 0)
return error("unable to read files to diff");
- /* Maybe hash p->two? into the patch id? */
- if (mmfile_is_binary(&mf2))
- continue;
-
len1 = remove_space(p->one->path, strlen(p->one->path));
len2 = remove_space(p->two->path, strlen(p->two->path));
if (p->one->mode == 0)
*q = outq;
}
+/* Check whether two filespecs with the same mode and size are identical */
+static int diff_filespec_is_identical(struct diff_filespec *one,
+ struct diff_filespec *two)
+{
+ if (S_ISGITLINK(one->mode)) {
+ diff_fill_sha1_info(one);
+ diff_fill_sha1_info(two);
+ return !hashcmp(one->sha1, two->sha1);
+ }
+ if (diff_populate_filespec(one, 0))
+ return 0;
+ if (diff_populate_filespec(two, 0))
+ return 0;
+ return !memcmp(one->data, two->data, one->size);
+}
+
+static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
+{
+ int i;
+ struct diff_queue_struct *q = &diff_queued_diff;
+ struct diff_queue_struct outq;
+ outq.queue = NULL;
+ outq.nr = outq.alloc = 0;
+
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+
+ /*
+ * 1. Entries that come from stat info dirtyness
+ * 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) */
+ diff_q(&outq, p);
+ else {
+ /*
+ * The caller can subtract 1 from skip_stat_unmatch
+ * to determine how many paths were dirty only
+ * due to stat info mismatch.
+ */
+ if (!diffopt->no_index)
+ diffopt->skip_stat_unmatch++;
+ diff_free_filepair(p);
+ }
+ }
+ free(q->queue);
+ *q = outq;
+}
+
void diffcore_std(struct diff_options *options)
{
+ if (options->quiet)
+ return;
+
+ if (options->skip_stat_unmatch && !options->find_copies_harder)
+ diffcore_skip_stat_unmatch(options);
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,
* entries to the diff-core. They will be prefixed
* with something like '=' or '*' (I haven't decided
* which but should not make any difference).
- * Feeding the same new and old to diff_change()
+ * Feeding the same new and old to diff_change()
* also has the same effect.
* Before the final output happens, they are pruned after
* merged into rename/copy pairs as appropriate.
fill_filespec(two, sha1, mode);
diff_queue(&diff_queued_diff, one, two);
+ options->has_changes = 1;
}
void diff_change(struct diff_options *options,
unsigned old_mode, unsigned new_mode,
const unsigned char *old_sha1,
const unsigned char *new_sha1,
- const char *base, const char *path)
+ const char *base, const char *path)
{
char concatpath[PATH_MAX];
struct diff_filespec *one, *two;
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,