typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len);
struct emit_callback {
- int nparents, color_diff;
- struct xdiff_emit_state xm;
+ int color_diff;
unsigned ws_rule;
+ int blank_at_eof_in_preimage;
+ int blank_at_eof_in_postimage;
+ int lno_in_preimage;
+ int lno_in_postimage;
sane_truncate_fn truncate;
const char **label_path;
struct diff_words_data *diff_words;
ecbdata->label_path[0] = ecbdata->label_path[1] = NULL;
}
- /* This is not really necessary for now because
- * this codepath only deals with two-way diffs.
- */
- for (i = 0; i < len && line[i] == '@'; i++)
- ;
- if (2 <= i && i < len && line[i] == ' ') {
- ecbdata->nparents = i - 1;
+ if (diff_suppress_blank_empty
+ && len == 2 && line[0] == ' ' && line[1] == '\n') {
+ line[0] = '\n';
+ len = 1;
+ }
+
+ if (line[0] == '@') {
len = sane_truncate_line(ecbdata, line, len);
+ find_lno(line, ecbdata);
emit_line(ecbdata->file,
diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO),
reset, line, len);
emit_binary_diff_body(file, two, one);
}
-static void setup_diff_attr_check(struct git_attr_check *check)
+static void diff_filespec_load_driver(struct diff_filespec *one)
{
- static struct git_attr *attr_diff;
-
- if (!attr_diff) {
- attr_diff = git_attr("diff", 4);
- }
- check[0].attr = attr_diff;
+ if (!one->driver)
+ one->driver = userdiff_find_by_path(one->path);
+ if (!one->driver)
+ one->driver = userdiff_find_by_name("default");
}
-static void diff_filespec_check_attr(struct diff_filespec *one)
+int diff_filespec_is_binary(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);
+ if (one->is_binary == -1) {
+ diff_filespec_load_driver(one);
+ if (one->driver->binary != -1)
+ one->is_binary = one->driver->binary;
+ else {
+ 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);
+ if (one->is_binary == -1)
+ one->is_binary = 0;
+ }
}
+ return one->is_binary;
}
-int diff_filespec_is_binary(struct diff_filespec *one)
+static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespec *one)
{
- diff_filespec_check_attr(one);
- return one->is_binary;
+ diff_filespec_load_driver(one);
+ return one->driver->funcname.pattern ? &one->driver->funcname : NULL;
}
-static const struct funcname_pattern_entry *funcname_pattern(const char *ident)
-{
- struct funcname_pattern_list *pp;
-
- for (pp = funcname_pattern_list; pp; pp = pp->next)
- if (!strcmp(ident, pp->e.name))
- return &pp->e;
- return NULL;
-}
-
-static const struct funcname_pattern_entry builtin_funcname_pattern[] = {
- { "java",
- "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
- "^[ \t]*(([ \t]*[A-Za-z_][A-Za-z_0-9]*){2,}[ \t]*\\([^;]*)$",
- REG_EXTENDED },
- { "pascal",
- "^((procedure|function|constructor|destructor|interface|"
- "implementation|initialization|finalization)[ \t]*.*)$"
- "|"
- "^(.*=[ \t]*(class|record).*)$",
- REG_EXTENDED },
- { "bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
- REG_EXTENDED },
- { "tex",
- "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
- REG_EXTENDED },
- { "ruby", "^[ \t]*((class|module|def)[ \t].*)$",
- REG_EXTENDED },
-};
-
-static const struct funcname_pattern_entry *diff_funcname_pattern(struct diff_filespec *one)
+static const char *userdiff_word_regex(struct diff_filespec *one)
{
- const char *ident;
- const struct funcname_pattern_entry *pe;
- 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. */
- pe = funcname_pattern(ident);
- if (pe)
- return pe;
+ diff_filespec_load_driver(one);
+ return one->driver->word_regex;
+}
- /*
- * And define built-in fallback patterns here. Note that
- * these can be overridden 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];
+void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b)
+{
+ if (!options->a_prefix)
+ options->a_prefix = a;
+ if (!options->b_prefix)
+ options->b_prefix = b;
+}
- return NULL;
+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 int count_trailing_blank(mmfile_t *mf, unsigned ws_rule)
+ {
+ char *ptr = mf->ptr;
+ long size = mf->size;
+ int cnt = 0;
+
+ if (!size)
+ return cnt;
+ ptr += size - 1; /* pointing at the very end */
+ if (*ptr != '\n')
+ ; /* incomplete line */
+ else
+ ptr--; /* skip the last LF */
+ while (mf->ptr < ptr) {
+ char *prev_eol;
+ for (prev_eol = ptr; mf->ptr <= prev_eol; prev_eol--)
+ if (*prev_eol == '\n')
+ break;
+ if (!ws_blank_line(prev_eol + 1, ptr - prev_eol, ws_rule))
+ break;
+ cnt++;
+ ptr = prev_eol - 1;
+ }
+ return cnt;
+ }
+
+ static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2,
+ struct emit_callback *ecbdata)
+ {
+ int l1, l2, at;
+ unsigned ws_rule = ecbdata->ws_rule;
+ l1 = count_trailing_blank(mf1, ws_rule);
+ l2 = count_trailing_blank(mf2, ws_rule);
+ if (l2 <= l1) {
+ ecbdata->blank_at_eof_in_preimage = 0;
+ ecbdata->blank_at_eof_in_postimage = 0;
+ return;
+ }
+ at = count_lines(mf1->ptr, mf1->size);
+ ecbdata->blank_at_eof_in_preimage = (at - l1) + 1;
+
+ at = count_lines(mf2->ptr, mf2->size);
+ ecbdata->blank_at_eof_in_postimage = (at - l2) + 1;
+ }
+
static void builtin_diff(const char *name_a,
const char *name_b,
struct diff_filespec *one,
memset(&xecfg, 0, sizeof(xecfg));
xecfg.ctxlen = 1; /* at least one context line */
xpp.flags = XDF_NEED_MINIMAL;
- ecb.outf = xdiff_outf;
- ecb.priv = &data;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data,
+ &xpp, &xecfg, &ecb);
- if ((data.ws_rule & WS_TRAILING_SPACE) &&
- data.trailing_blanks_start) {
- fprintf(o->file, "%s:%d: ends with blank lines.\n",
- data.filename, data.trailing_blanks_start);
- data.status = 1; /* report errors */
+ if (data.ws_rule & WS_BLANK_AT_EOF) {
+ struct emit_callback ecbdata;
+ int blank_at_eof;
+
+ ecbdata.ws_rule = data.ws_rule;
+ check_blank_at_eof(&mf1, &mf2, &ecbdata);
+ blank_at_eof = ecbdata.blank_at_eof_in_preimage;
+
+ if (blank_at_eof) {
+ static char *err;
+ if (!err)
+ err = whitespace_error_string(WS_BLANK_AT_EOF);
+ fprintf(o->file, "%s:%d: %s.\n",
+ data.filename, blank_at_eof, err);
+ data.status = 1; /* report errors */
+ }
}
}
free_and_return:
done
done
+create_patch () {
+ sed -e "s/_/ /" <<-\EOF
+ diff --git a/target b/target
+ index e69de29..8bd6648 100644
+ --- a/target
+ +++ b/target
+ @@ -0,0 +1,3 @@
+ +An empty line follows
+ +
+ +A line with trailing whitespace and no newline_
+ \ No newline at end of file
+ EOF
+}
+
+test_expect_success 'trailing whitespace & no newline at the end of file' '
+ >target &&
+ create_patch >patch-file &&
+ git apply --whitespace=fix patch-file &&
+ grep "newline$" target &&
+ grep "^$" target
+'
+ test_expect_success 'blank at EOF with --whitespace=fix (1)' '
+ : these can fail depending on what we did before
+ git config --unset core.whitespace
+ rm -f .gitattributes
+
+ { echo a; echo b; echo c; } >one &&
+ git add one &&
+ { echo a; echo b; echo c; } >expect &&
+ { cat expect; echo; } >one &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ git apply --whitespace=fix patch &&
+ test_cmp expect one
+ '
+
+ test_expect_success 'blank at EOF with --whitespace=fix (2)' '
+ { echo a; echo b; echo c; } >one &&
+ git add one &&
+ { echo a; echo c; } >expect &&
+ { cat expect; echo; echo; } >one &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ git apply --whitespace=fix patch &&
+ test_cmp expect one
+ '
+
+ test_expect_success 'blank at EOF with --whitespace=fix (3)' '
+ { echo a; echo b; echo; } >one &&
+ git add one &&
+ { echo a; echo c; echo; } >expect &&
+ { cat expect; echo; echo; } >one &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ git apply --whitespace=fix patch &&
+ test_cmp expect one
+ '
+
+ test_expect_success 'blank at end of hunk, not at EOF with --whitespace=fix' '
+ { echo a; echo b; echo; echo; echo; echo; echo; echo d; } >one &&
+ git add one &&
+ { echo a; echo c; echo; echo; echo; echo; echo; echo; echo d; } >expect &&
+ cp expect one &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ git apply --whitespace=fix patch &&
+ test_cmp expect one
+ '
+
+ test_expect_success 'blank at EOF with --whitespace=warn' '
+ { echo a; echo b; echo c; } >one &&
+ git add one &&
+ echo >>one &&
+ cat one >expect &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ git apply --whitespace=warn patch 2>error &&
+ test_cmp expect one &&
+ grep "new blank line at EOF" error
+ '
+
+ test_expect_success 'blank at EOF with --whitespace=error' '
+ { echo a; echo b; echo c; } >one &&
+ git add one &&
+ cat one >expect &&
+ echo >>one &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ test_must_fail git apply --whitespace=error patch 2>error &&
+ test_cmp expect one &&
+ grep "new blank line at EOF" error
+ '
+
+ test_expect_success 'blank but not empty at EOF' '
+ { echo a; echo b; echo c; } >one &&
+ git add one &&
+ echo " " >>one &&
+ cat one >expect &&
+ git diff -- one >patch &&
+
+ git checkout one &&
+ git apply --whitespace=warn patch 2>error &&
+ test_cmp expect one &&
+ grep "new blank line at EOF" error
+ '
+
test_done
static struct whitespace_rule {
const char *rule_name;
unsigned rule_bits;
+ unsigned loosens_error;
} whitespace_rule_names[] = {
- { "trailing-space", WS_TRAILING_SPACE },
- { "space-before-tab", WS_SPACE_BEFORE_TAB },
- { "indent-with-non-tab", WS_INDENT_WITH_NON_TAB },
- { "cr-at-eol", WS_CR_AT_EOL },
- { "blank-at-eol", WS_BLANK_AT_EOL },
- { "blank-at-eof", WS_BLANK_AT_EOF },
+ { "trailing-space", WS_TRAILING_SPACE, 0 },
+ { "space-before-tab", WS_SPACE_BEFORE_TAB, 0 },
+ { "indent-with-non-tab", WS_INDENT_WITH_NON_TAB, 0 },
+ { "cr-at-eol", WS_CR_AT_EOL, 1 },
++ { "blank-at-eol", WS_BLANK_AT_EOL, 0 },
++ { "blank-at-eof", WS_BLANK_AT_EOF, 0 },
};
unsigned parse_whitespace_rule(const char *string)
/* The returned string should be freed by the caller. */
char *whitespace_error_string(unsigned ws)
{
- struct strbuf err;
-
- strbuf_init(&err, 0);
+ struct strbuf err = STRBUF_INIT;
- if (ws & WS_TRAILING_SPACE)
+ if ((ws & WS_TRAILING_SPACE) == WS_TRAILING_SPACE)
strbuf_addstr(&err, "trailing whitespace");
+ else {
+ if (ws & WS_BLANK_AT_EOL)
+ strbuf_addstr(&err, "trailing whitespace");
+ if (ws & WS_BLANK_AT_EOF) {
+ if (err.len)
+ strbuf_addstr(&err, ", ");
+ strbuf_addstr(&err, "new blank line at EOF");
+ }
+ }
if (ws & WS_SPACE_BEFORE_TAB) {
if (err.len)
strbuf_addstr(&err, ", ");
/*
* Strip trailing whitespace
*/
- if (ws_rule & WS_TRAILING_SPACE) {
- if ((ws_rule & WS_BLANK_AT_EOL) &&
- (2 <= len && isspace(src[len-2]))) {
- if (src[len - 1] == '\n') {
++ if (ws_rule & WS_BLANK_AT_EOL) {
+ if (0 < len && src[len - 1] == '\n') {
add_nl_to_tail = 1;
len--;
- if (1 < len && src[len - 1] == '\r') {
+ if (0 < len && src[len - 1] == '\r') {
add_cr_to_tail = !!(ws_rule & WS_CR_AT_EOL);
len--;
}
projects / git.git / commitdiff