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Fix incorrect call to on_align in '{:}=' (#750)

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This commit is contained in:
Victor Zverovich 2018-05-26 09:23:09 -07:00
parent fba352a92a
commit e2cd521b8f
2 changed files with 35 additions and 33 deletions
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67
include/fmt/format.h
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@ -1975,41 +1975,42 @@ struct precision_adapter {
template <typename Iterator, typename SpecHandler>
FMT_CONSTEXPR Iterator parse_format_specs(Iterator it, SpecHandler &&handler) {
typedef typename std::iterator_traits<Iterator>::value_type char_type;
char_type c = *it;
if (c == '}' || !c)
return it;
// Parse fill and alignment.
if (char_type c = *it) {
alignment align = ALIGN_DEFAULT;
int i = 1;
do {
auto p = it + i;
switch (*p) {
case '<':
align = ALIGN_LEFT;
break;
case '>':
align = ALIGN_RIGHT;
break;
case '=':
align = ALIGN_NUMERIC;
break;
case '^':
align = ALIGN_CENTER;
break;
}
if (align != ALIGN_DEFAULT) {
handler.on_align(align);
if (p != it) {
if (c == '}') break;
if (c == '{') {
handler.on_error("invalid fill character '{'");
return it;
}
it += 2;
handler.on_fill(c);
} else ++it;
alignment align = ALIGN_DEFAULT;
int i = 1;
do {
auto p = it + i;
switch (*p) {
case '<':
align = ALIGN_LEFT;
break;
}
} while (--i >= 0);
}
case '>':
align = ALIGN_RIGHT;
break;
case '=':
align = ALIGN_NUMERIC;
break;
case '^':
align = ALIGN_CENTER;
break;
}
if (align != ALIGN_DEFAULT) {
if (p != it) {
if (c == '{') {
handler.on_error("invalid fill character '{'");
return it;
}
it += 2;
handler.on_fill(c);
} else ++it;
handler.on_align(align);
break;
}
} while (--i >= 0);
// Parse sign.
switch (*it) {

1
test/format-test.cc
View File

@ -435,6 +435,7 @@ TEST(FormatterTest, Fill) {
EXPECT_EQ("c****", format("{0:*<5}", 'c'));
EXPECT_EQ("abc**", format("{0:*<5}", "abc"));
EXPECT_EQ("**0xface", format("{0:*>8}", reinterpret_cast<void*>(0xface)));
EXPECT_EQ("foo=", format("{:}=", "foo"));
}
TEST(FormatterTest, PlusSign) {