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Add a Print overload that writes to a file.
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parent
2e50361a29
commit
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17
format.h
17
format.h
@ -1062,7 +1062,6 @@ class BasicWriter {
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*/
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BasicFormatter<Char> Format(StringRef format);
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// TODO: ArgInfo should be made public for this to be usable
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inline void VFormat(BasicStringRef<Char> format,
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std::size_t num_args, const ArgInfo *args) {
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FormatParser().Format(*this, format, num_args, args);
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@ -1619,12 +1618,19 @@ class FileSink {
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// Formats a string and prints it to stdout.
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// Example:
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// Print("Elapsed time: {0:.2f} seconds") << 1.23;
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// TODO: wchar overload
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inline Formatter<FileSink> Print(StringRef format) {
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Formatter<FileSink> f(format, FileSink(stdout));
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return f;
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}
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// Formats a string and prints it to a file.
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// Example:
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// Print(stderr, "Don't {}!") << "panic";
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inline Formatter<FileSink> Print(std::FILE *file, StringRef format) {
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Formatter<FileSink> f(format, FileSink(file));
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return f;
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}
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enum Color { BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE };
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/**
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@ -1680,6 +1686,13 @@ void Print(StringRef format, const Args & ... args) {
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std::fwrite(w.data(), 1, w.size(), stdout);
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}
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template<typename... Args>
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void Print(std::FILE *f, StringRef format, const Args & ... args) {
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Writer w;
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w.Format(format, args...);
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std::fwrite(w.data(), 1, w.size(), f);
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}
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#endif // FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES
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/**
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@ -1833,6 +1833,20 @@ TEST(FormatIntTest, FormatDec) {
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#if FMT_USE_FILE_DESCRIPTORS
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TEST(FormatTest, Print) {
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EXPECT_WRITE(stdout, fmt::Print("Don't {}!") << "panic", "Don't panic!");
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EXPECT_WRITE(stderr,
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fmt::Print(stderr, "Don't {}!") << "panic", "Don't panic!");
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}
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#if FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES
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TEST(FormatTest, PrintVariadic) {
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EXPECT_WRITE(stdout, fmt::Print("Don't {}!", "panic"), "Don't panic!");
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EXPECT_WRITE(stderr,
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fmt::Print(stderr, "Don't {}!", "panic"), "Don't panic!");
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}
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#endif // FMT_USE_VARIADIC_TEMPLATES
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TEST(FormatTest, PrintColored) {
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EXPECT_WRITE(stdout, fmt::PrintColored(fmt::RED, "Hello, {}!\n") << "world",
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"\x1b[31mHello, world!\n\x1b[0m");
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@ -1842,8 +1856,9 @@ TEST(FormatTest, PrintColored) {
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#if FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES
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TEST(FormatTest, Variadic) {
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EXPECT_EQ("Hello, world!1", str(Format("Hello, {}!{}", "world", 1)));
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EXPECT_EQ(L"Hello, world!1", str(Format(L"Hello, {}!{}", L"world", 1)));
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EXPECT_EQ("abc1", str(Format("{}c{}", "ab", 1)));
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EXPECT_EQ(L"abc1", str(Format(L"{}c{}", L"ab", 1)));
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EXPECT_WRITE(stdout, fmt::Print("So {}!", "variadic"), "So variadic!");
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}
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#endif // FMT_USE_VARIADIC_TEMPLATES
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