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authorJunio C Hamano <gitster@pobox.com>2010-05-09 05:35:35 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-05-09 05:35:35 (GMT)
commitc58c5129d6f0a35ee62bcc0892209a2400e9f4e6 (patch)
tree17afc52b50aa2f5a28c13afbe0fd0e21e813b22d
parentf78eeeaf55a4f60a05d3e6452f29a2214c29b6fd (diff)
parenta347b17f15dd5358ced8d447af144a46b224982d (diff)
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Merge branch 'cw/ws-indent-with-tab'
* cw/ws-indent-with-tab: whitespace: tests for git-apply --whitespace=fix with tab-in-indent whitespace: add tab-in-indent support for --whitespace=fix whitespace: replumb ws_fix_copy to take a strbuf *dst instead of char *dst whitespace: tests for git-diff --check with tab-in-indent error class whitespace: add tab-in-indent error class whitespace: we cannot "catch all errors known to git" anymore
-rw-r--r--Documentation/config.txt2
-rw-r--r--builtin/apply.c81
-rw-r--r--cache.h3
-rwxr-xr-xt/t4015-diff-whitespace.sh42
-rwxr-xr-xt/t4124-apply-ws-rule.sh53
-rw-r--r--ws.c66
6 files changed, 162 insertions, 85 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 8f86050..6308026 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -481,6 +481,8 @@ core.whitespace::
error (enabled by default).
* `indent-with-non-tab` treats a line that is indented with 8 or more
space characters as an error (not enabled by default).
+* `tab-in-indent` treats a tab character in the initial indent part of
+ the line as an error (not enabled by default).
* `blank-at-eof` treats blank lines added at the end of file as an error
(enabled by default).
* `trailing-space` is a short-hand to cover both `blank-at-eol` and
diff --git a/builtin/apply.c b/builtin/apply.c
index 660cf92..d56cabf 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -1854,6 +1854,8 @@ static int match_fragment(struct image *img,
{
int i;
char *fixed_buf, *buf, *orig, *target;
+ struct strbuf fixed;
+ size_t fixed_len;
int preimage_limit;
if (preimage->nr + try_lno <= img->nr) {
@@ -1977,12 +1979,12 @@ static int match_fragment(struct image *img,
* use the whitespace from the preimage.
*/
extra_chars = preimage_end - preimage_eof;
- fixed_buf = xmalloc(imgoff + extra_chars);
- memcpy(fixed_buf, img->buf + try, imgoff);
- memcpy(fixed_buf + imgoff, preimage_eof, extra_chars);
- imgoff += extra_chars;
+ strbuf_init(&fixed, imgoff + extra_chars);
+ strbuf_add(&fixed, img->buf + try, imgoff);
+ strbuf_add(&fixed, preimage_eof, extra_chars);
+ fixed_buf = strbuf_detach(&fixed, &fixed_len);
update_pre_post_images(preimage, postimage,
- fixed_buf, imgoff, postlen);
+ fixed_buf, fixed_len, postlen);
return 1;
}
@@ -1999,27 +2001,22 @@ static int match_fragment(struct image *img,
* but in this loop we will only handle the part of the
* preimage that falls within the file.
*/
- fixed_buf = xmalloc(preimage->len + 1);
- buf = fixed_buf;
+ strbuf_init(&fixed, preimage->len + 1);
orig = preimage->buf;
target = img->buf + try;
for (i = 0; i < preimage_limit; i++) {
- size_t fixlen; /* length after fixing the preimage */
size_t oldlen = preimage->line[i].len;
size_t tgtlen = img->line[try_lno + i].len;
- size_t tgtfixlen; /* length after fixing the target line */
- char tgtfixbuf[1024], *tgtfix;
+ size_t fixstart = fixed.len;
+ struct strbuf tgtfix;
int match;
/* Try fixing the line in the preimage */
- fixlen = ws_fix_copy(buf, orig, oldlen, ws_rule, NULL);
+ ws_fix_copy(&fixed, orig, oldlen, ws_rule, NULL);
/* Try fixing the line in the target */
- if (sizeof(tgtfixbuf) > tgtlen)
- tgtfix = tgtfixbuf;
- else
- tgtfix = xmalloc(tgtlen);
- tgtfixlen = ws_fix_copy(tgtfix, target, tgtlen, ws_rule, NULL);
+ strbuf_init(&tgtfix, tgtlen);
+ ws_fix_copy(&tgtfix, target, tgtlen, ws_rule, NULL);
/*
* If they match, either the preimage was based on
@@ -2031,15 +2028,15 @@ static int match_fragment(struct image *img,
* so we might as well take the fix together with their
* real change.
*/
- match = (tgtfixlen == fixlen && !memcmp(tgtfix, buf, fixlen));
+ match = (tgtfix.len == fixed.len - fixstart &&
+ !memcmp(tgtfix.buf, fixed.buf + fixstart,
+ fixed.len - fixstart));
- if (tgtfix != tgtfixbuf)
- free(tgtfix);
+ strbuf_release(&tgtfix);
if (!match)
goto unmatch_exit;
orig += oldlen;
- buf += fixlen;
target += tgtlen;
}
@@ -2051,19 +2048,18 @@ static int match_fragment(struct image *img,
* false).
*/
for ( ; i < preimage->nr; i++) {
- size_t fixlen; /* length after fixing the preimage */
+ size_t fixstart = fixed.len; /* start of the fixed preimage */
size_t oldlen = preimage->line[i].len;
int j;
/* Try fixing the line in the preimage */
- fixlen = ws_fix_copy(buf, orig, oldlen, ws_rule, NULL);
+ ws_fix_copy(&fixed, orig, oldlen, ws_rule, NULL);
- for (j = 0; j < fixlen; j++)
- if (!isspace(buf[j]))
+ for (j = fixstart; j < fixed.len; j++)
+ if (!isspace(fixed.buf[j]))
goto unmatch_exit;
orig += oldlen;
- buf += fixlen;
}
/*
@@ -2071,12 +2067,13 @@ static int match_fragment(struct image *img,
* has whitespace breakages unfixed, and fixing them makes the
* hunk match. Update the context lines in the postimage.
*/
+ fixed_buf = strbuf_detach(&fixed, &fixed_len);
update_pre_post_images(preimage, postimage,
- fixed_buf, buf - fixed_buf, 0);
+ fixed_buf, fixed_len, 0);
return 1;
unmatch_exit:
- free(fixed_buf);
+ strbuf_release(&fixed);
return 0;
}
@@ -2244,7 +2241,8 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
int match_beginning, match_end;
const char *patch = frag->patch;
int size = frag->size;
- char *old, *new, *oldlines, *newlines;
+ char *old, *oldlines;
+ struct strbuf newlines;
int new_blank_lines_at_end = 0;
unsigned long leading, trailing;
int pos, applied_pos;
@@ -2254,16 +2252,16 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
memset(&preimage, 0, sizeof(preimage));
memset(&postimage, 0, sizeof(postimage));
oldlines = xmalloc(size);
- newlines = xmalloc(size);
+ strbuf_init(&newlines, size);
old = oldlines;
- new = newlines;
while (size > 0) {
char first;
int len = linelen(patch, size);
- int plen, added;
+ int plen;
int added_blank_line = 0;
int is_blank_context = 0;
+ size_t start;
if (!len)
break;
@@ -2293,7 +2291,7 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
/* ... followed by '\No newline'; nothing */
break;
*old++ = '\n';
- *new++ = '\n';
+ strbuf_addch(&newlines, '\n');
add_line_info(&preimage, "\n", 1, LINE_COMMON);
add_line_info(&postimage, "\n", 1, LINE_COMMON);
is_blank_context = 1;
@@ -2315,18 +2313,17 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
if (first == '+' && no_add)
break;
+ start = newlines.len;
if (first != '+' ||
!whitespace_error ||
ws_error_action != correct_ws_error) {
- memcpy(new, patch + 1, plen);
- added = plen;
+ strbuf_add(&newlines, patch + 1, plen);
}
else {
- added = ws_fix_copy(new, patch + 1, plen, ws_rule, &applied_after_fixing_ws);
+ ws_fix_copy(&newlines, patch + 1, plen, ws_rule, &applied_after_fixing_ws);
}
- add_line_info(&postimage, new, added,
+ add_line_info(&postimage, newlines.buf + start, newlines.len - start,
(first == '+' ? 0 : LINE_COMMON));
- new += added;
if (first == '+' &&
(ws_rule & WS_BLANK_AT_EOF) &&
ws_blank_line(patch + 1, plen, ws_rule))
@@ -2351,9 +2348,9 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
}
if (inaccurate_eof &&
old > oldlines && old[-1] == '\n' &&
- new > newlines && new[-1] == '\n') {
+ newlines.len > 0 && newlines.buf[newlines.len - 1] == '\n') {
old--;
- new--;
+ strbuf_setlen(&newlines, newlines.len - 1);
}
leading = frag->leading;
@@ -2385,8 +2382,8 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
pos = frag->newpos ? (frag->newpos - 1) : 0;
preimage.buf = oldlines;
preimage.len = old - oldlines;
- postimage.buf = newlines;
- postimage.len = new - newlines;
+ postimage.buf = newlines.buf;
+ postimage.len = newlines.len;
preimage.line = preimage.line_allocated;
postimage.line = postimage.line_allocated;
@@ -2462,7 +2459,7 @@ static int apply_one_fragment(struct image *img, struct fragment *frag,
}
free(oldlines);
- free(newlines);
+ strbuf_release(&newlines);
free(preimage.line_allocated);
free(postimage.line_allocated);
diff --git a/cache.h b/cache.h
index bfc4d82..9d97df9 100644
--- a/cache.h
+++ b/cache.h
@@ -1042,6 +1042,7 @@ void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *
#define WS_INDENT_WITH_NON_TAB 04
#define WS_CR_AT_EOL 010
#define WS_BLANK_AT_EOF 020
+#define WS_TAB_IN_INDENT 040
#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
extern unsigned whitespace_rule_cfg;
@@ -1050,7 +1051,7 @@ extern unsigned parse_whitespace_rule(const char *);
extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
extern char *whitespace_error_string(unsigned ws);
-extern int ws_fix_copy(char *, const char *, int, unsigned, int *);
+extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
/* ls-files */
diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index 90f3342..e92eab0 100755
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -352,6 +352,48 @@ test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab:
'
+test_expect_success 'check tabs as indentation (tab-in-indent: off)' '
+
+ git config core.whitespace "-tab-in-indent" &&
+ echo " foo ();" > x &&
+ git diff --check
+
+'
+
+test_expect_success 'check tabs as indentation (tab-in-indent: on)' '
+
+ git config core.whitespace "tab-in-indent" &&
+ echo " foo ();" > x &&
+ test_must_fail git diff --check
+
+'
+
+test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' '
+
+ git config core.whitespace "tab-in-indent" &&
+ echo " foo ();" > x &&
+ test_must_fail git diff --check
+
+'
+
+test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' '
+
+ git config core.whitespace "tab-in-indent,indent-with-non-tab" &&
+ echo "foo ();" > x &&
+ test_must_fail git diff --check
+
+'
+
+test_expect_success 'check tab-in-indent excluded from wildcard whitespace attribute' '
+
+ git config --unset core.whitespace &&
+ echo "x whitespace" > .gitattributes &&
+ echo " foo ();" > x &&
+ git diff --check &&
+ rm -f .gitattributes
+
+'
+
test_expect_success 'line numbers in --check output are correct' '
echo "" > x &&
diff --git a/t/t4124-apply-ws-rule.sh b/t/t4124-apply-ws-rule.sh
index fb9ad24..8d46df6 100755
--- a/t/t4124-apply-ws-rule.sh
+++ b/t/t4124-apply-ws-rule.sh
@@ -11,21 +11,22 @@ prepare_test_file () {
# ! trailing-space
# @ space-before-tab
# # indent-with-non-tab
+ # % tab-in-indent
sed -e "s/_/ /g" -e "s/>/ /" <<-\EOF
An_SP in an ordinary line>and a HT.
- >A HT.
- _>A SP and a HT (@).
- _>_A SP, a HT and a SP (@).
+ >A HT (%).
+ _>A SP and a HT (@%).
+ _>_A SP, a HT and a SP (@%).
_______Seven SP.
________Eight SP (#).
- _______>Seven SP and a HT (@).
- ________>Eight SP and a HT (@#).
- _______>_Seven SP, a HT and a SP (@).
- ________>_Eight SP, a HT and a SP (@#).
+ _______>Seven SP and a HT (@%).
+ ________>Eight SP and a HT (@#%).
+ _______>_Seven SP, a HT and a SP (@%).
+ ________>_Eight SP, a HT and a SP (@#%).
_______________Fifteen SP (#).
- _______________>Fifteen SP and a HT (@#).
+ _______________>Fifteen SP and a HT (@#%).
________________Sixteen SP (#).
- ________________>Sixteen SP and a HT (@#).
+ ________________>Sixteen SP and a HT (@#%).
_____a__Five SP, a non WS, two SP.
A line with a (!) trailing SP_
A line with a (!) trailing HT>
@@ -39,7 +40,6 @@ apply_patch () {
}
test_fix () {
-
# fix should not barf
apply_patch --whitespace=fix || return 1
@@ -130,20 +130,25 @@ do
for i in - ''
do
case "$i" in '') ti='#' ;; *) ti= ;; esac
- rule=${t}trailing,${s}space,${i}indent
-
- rm -f .gitattributes
- test_expect_success "rule=$rule" '
- git config core.whitespace "$rule" &&
- test_fix "$tt$ts$ti"
- '
-
- test_expect_success "rule=$rule (attributes)" '
- git config --unset core.whitespace &&
- echo "target whitespace=$rule" >.gitattributes &&
- test_fix "$tt$ts$ti"
- '
-
+ for h in - ''
+ do
+ [ -z "$h$i" ] && continue
+ case "$h" in '') th='%' ;; *) th= ;; esac
+ rule=${t}trailing,${s}space,${i}indent,${h}tab
+
+ rm -f .gitattributes
+ test_expect_success "rule=$rule" '
+ git config core.whitespace "$rule" &&
+ test_fix "$tt$ts$ti$th"
+ '
+
+ test_expect_success "rule=$rule (attributes)" '
+ git config --unset core.whitespace &&
+ echo "target whitespace=$rule" >.gitattributes &&
+ test_fix "$tt$ts$ti$th"
+ '
+
+ done
done
done
done
diff --git a/ws.c b/ws.c
index c089338..d7b8c33 100644
--- a/ws.c
+++ b/ws.c
@@ -10,7 +10,8 @@
static struct whitespace_rule {
const char *rule_name;
unsigned rule_bits;
- unsigned loosens_error;
+ unsigned loosens_error:1,
+ exclude_default:1;
} whitespace_rule_names[] = {
{ "trailing-space", WS_TRAILING_SPACE, 0 },
{ "space-before-tab", WS_SPACE_BEFORE_TAB, 0 },
@@ -18,6 +19,7 @@ static struct whitespace_rule {
{ "cr-at-eol", WS_CR_AT_EOL, 1 },
{ "blank-at-eol", WS_BLANK_AT_EOL, 0 },
{ "blank-at-eof", WS_BLANK_AT_EOF, 0 },
+ { "tab-in-indent", WS_TAB_IN_INDENT, 0, 1 },
};
unsigned parse_whitespace_rule(const char *string)
@@ -56,6 +58,9 @@ unsigned parse_whitespace_rule(const char *string)
}
string = ep;
}
+
+ if (rule & WS_TAB_IN_INDENT && rule & WS_INDENT_WITH_NON_TAB)
+ die("cannot enforce both tab-in-indent and indent-with-non-tab");
return rule;
}
@@ -82,7 +87,8 @@ unsigned whitespace_rule(const char *pathname)
unsigned all_rule = 0;
int i;
for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++)
- if (!whitespace_rule_names[i].loosens_error)
+ if (!whitespace_rule_names[i].loosens_error &&
+ !whitespace_rule_names[i].exclude_default)
all_rule |= whitespace_rule_names[i].rule_bits;
return all_rule;
} else if (ATTR_FALSE(value)) {
@@ -125,6 +131,11 @@ char *whitespace_error_string(unsigned ws)
strbuf_addstr(&err, ", ");
strbuf_addstr(&err, "indent with spaces");
}
+ if (ws & WS_TAB_IN_INDENT) {
+ if (err.len)
+ strbuf_addstr(&err, ", ");
+ strbuf_addstr(&err, "tab in indent");
+ }
return strbuf_detach(&err, NULL);
}
@@ -163,7 +174,7 @@ static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
}
}
- /* Check for space before tab in initial indent. */
+ /* Check indentation */
for (i = 0; i < len; i++) {
if (line[i] == ' ')
continue;
@@ -175,11 +186,19 @@ static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
fputs(ws, stream);
fwrite(line + written, i - written, 1, stream);
fputs(reset, stream);
+ fwrite(line + i, 1, 1, stream);
}
- } else if (stream)
- fwrite(line + written, i - written, 1, stream);
- if (stream)
- fwrite(line + i, 1, 1, stream);
+ } else if (ws_rule & WS_TAB_IN_INDENT) {
+ result |= WS_TAB_IN_INDENT;
+ if (stream) {
+ fwrite(line + written, i - written, 1, stream);
+ fputs(ws, stream);
+ fwrite(line + i, 1, 1, stream);
+ fputs(reset, stream);
+ }
+ } else if (stream) {
+ fwrite(line + written, i - written + 1, 1, stream);
+ }
written = i + 1;
}
@@ -252,8 +271,8 @@ int ws_blank_line(const char *line, int len, unsigned ws_rule)
return 1;
}
-/* Copy the line to the buffer while fixing whitespaces */
-int ws_fix_copy(char *dst, const char *src, int len, unsigned ws_rule, int *error_count)
+/* Copy the line onto the end of the strbuf while fixing whitespaces */
+void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule, int *error_count)
{
/*
* len is number of bytes to be copied from src, starting
@@ -267,7 +286,6 @@ int ws_fix_copy(char *dst, const char *src, int len, unsigned ws_rule, int *erro
int last_tab_in_indent = -1;
int last_space_in_indent = -1;
int need_fix_leading_space = 0;
- char *buf;
/*
* Strip trailing whitespace
@@ -307,7 +325,6 @@ int ws_fix_copy(char *dst, const char *src, int len, unsigned ws_rule, int *erro
break;
}
- buf = dst;
if (need_fix_leading_space) {
/* Process indent ourselves */
int consecutive_spaces = 0;
@@ -329,28 +346,41 @@ int ws_fix_copy(char *dst, const char *src, int len, unsigned ws_rule, int *erro
char ch = src[i];
if (ch != ' ') {
consecutive_spaces = 0;
- *dst++ = ch;
+ strbuf_addch(dst, ch);
} else {
consecutive_spaces++;
if (consecutive_spaces == 8) {
- *dst++ = '\t';
+ strbuf_addch(dst, '\t');
consecutive_spaces = 0;
}
}
}
while (0 < consecutive_spaces--)
- *dst++ = ' ';
+ strbuf_addch(dst, ' ');
+ len -= last;
+ src += last;
+ fixed = 1;
+ } else if ((ws_rule & WS_TAB_IN_INDENT) && last_tab_in_indent >= 0) {
+ /* Expand tabs into spaces */
+ int last = last_tab_in_indent + 1;
+ for (i = 0; i < last; i++) {
+ if (src[i] == '\t')
+ do {
+ strbuf_addch(dst, ' ');
+ } while (dst->len % 8);
+ else
+ strbuf_addch(dst, src[i]);
+ }
len -= last;
src += last;
fixed = 1;
}
- memcpy(dst, src, len);
+ strbuf_add(dst, src, len);
if (add_cr_to_tail)
- dst[len++] = '\r';
+ strbuf_addch(dst, '\r');
if (add_nl_to_tail)
- dst[len++] = '\n';
+ strbuf_addch(dst, '\n');
if (fixed && error_count)
(*error_count)++;
- return dst + len - buf;
}