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Allocate large enough buffer to make _ecvt_s happy. Swap the order of template parameters in TempFormatter for convenience.

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This commit is contained in:
Victor Zverovich 2013-02-28 10:47:20 -08:00
parent 452df673ea
commit 6afa2994d5
2 changed files with 13 additions and 13 deletions
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14
format.h
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@ -191,8 +191,8 @@ inline int SignBit(double value) {
if (value < 0) return 1;
if (value == value) return 0;
int dec = 0, sign = 0;
char dummy;
_ecvt_s(&dummy, 1, value, 0, &dec, &sign);
char buffer[2]; // The buffer size must be >= 2 or _ecvt_s will fail.
_ecvt_s(&buffer, sizeof(buffer), value, 0, &dec, &sign);
return sign;
}
@ -1155,7 +1155,7 @@ class NoAction {
Objects of this class normally exist only as temporaries returned
by one of the formatting functions which explains the name.
*/
template <typename Char, typename Action = NoAction>
template <typename Action = NoAction, typename Char = char>
class TempFormatter : public internal::ArgInserter<Char> {
private:
BasicFormatter<Char> formatter_;
@ -1232,8 +1232,8 @@ class TempFormatter : public internal::ArgInserter<Char> {
See also `Format String Syntax`_.
\endrst
*/
inline TempFormatter<char> Format(StringRef format) {
return TempFormatter<char>(format);
inline TempFormatter<> Format(StringRef format) {
return TempFormatter<>(format);
}
// A formatting action that writes formatted output to stdout.
@ -1246,8 +1246,8 @@ struct Write {
// Formats a string and prints it to stdout.
// Example:
// Print("Elapsed time: {0:.2f} seconds") << 1.23;
inline TempFormatter<char, Write> Print(StringRef format) {
return TempFormatter<char, Write>(format);
inline TempFormatter<Write> Print(StringRef format) {
return TempFormatter<Write>(format);
}
// Throws Exception(message) if format contains '}', otherwise throws

12
format_test.cc
View File

@ -1086,7 +1086,7 @@ struct CountCalls {
TEST(TempFormatterTest, Action) {
int num_calls = 0;
{
fmt::TempFormatter<char, CountCalls> af("test", CountCalls(num_calls));
fmt::TempFormatter<CountCalls> af("test", CountCalls(num_calls));
EXPECT_EQ(0, num_calls);
}
EXPECT_EQ(1, num_calls);
@ -1095,7 +1095,7 @@ TEST(TempFormatterTest, Action) {
TEST(TempFormatterTest, ActionNotCalledOnError) {
int num_calls = 0;
{
typedef fmt::TempFormatter<char, CountCalls> TestFormatter;
typedef fmt::TempFormatter<CountCalls> TestFormatter;
EXPECT_THROW(TestFormatter af("{0", CountCalls(num_calls)), FormatError);
}
EXPECT_EQ(0, num_calls);
@ -1108,8 +1108,8 @@ TEST(TempFormatterTest, ActionNotCalledOnError) {
TEST(TempFormatterTest, ArgLifetime) {
// The following code is for testing purposes only. It is a definite abuse
// of the API and shouldn't be used in real applications.
const fmt::TempFormatter<char> &af = fmt::Format("{0}");
const_cast<fmt::TempFormatter<char>&>(af) << std::string("test");
const fmt::TempFormatter<> &af = fmt::Format("{0}");
const_cast<fmt::TempFormatter<>&>(af) << std::string("test");
// String object passed as an argument to TempFormatter has
// been destroyed, but ArgInserter dtor hasn't been called yet.
// But that's OK since the Arg's dtor takes care of this and
@ -1128,8 +1128,8 @@ struct PrintError {
}
};
fmt::TempFormatter<char, PrintError> ReportError(const char *format) {
return fmt::TempFormatter<char, PrintError>(format);
fmt::TempFormatter<PrintError> ReportError(const char *format) {
return fmt::TempFormatter<PrintError>(format);
}
TEST(TempFormatterTest, Examples) {