#include <algorithm> // std::max
#include <limits> // std::numeric_limits
+#include <ostream>
-#include "ostream.h"
+#include "format.h"
FMT_BEGIN_NAMESPACE
-namespace detail {
+FMT_MODULE_EXPORT_BEGIN
+
+template <typename T> struct printf_formatter { printf_formatter() = delete; };
+
+template <typename Char>
+class basic_printf_parse_context : public basic_format_parse_context<Char> {
+ using basic_format_parse_context<Char>::basic_format_parse_context;
+};
+
+template <typename OutputIt, typename Char> class basic_printf_context {
+ private:
+ OutputIt out_;
+ basic_format_args<basic_printf_context> args_;
+
+ public:
+ using char_type = Char;
+ using format_arg = basic_format_arg<basic_printf_context>;
+ using parse_context_type = basic_printf_parse_context<Char>;
+ template <typename T> using formatter_type = printf_formatter<T>;
+
+ /**
+ \rst
+ Constructs a ``printf_context`` object. References to the arguments are
+ stored in the context object so make sure they have appropriate lifetimes.
+ \endrst
+ */
+ basic_printf_context(OutputIt out,
+ basic_format_args<basic_printf_context> args)
+ : out_(out), args_(args) {}
+
+ OutputIt out() { return out_; }
+ void advance_to(OutputIt it) { out_ = it; }
+
+ detail::locale_ref locale() { return {}; }
+
+ format_arg arg(int id) const { return args_.get(id); }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ detail::error_handler().on_error(message);
+ }
+};
+
+FMT_BEGIN_DETAIL_NAMESPACE
// Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers.
}
};
-template <typename Char, typename Context>
-void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
- basic_format_args<Context> args) {
- Context(std::back_inserter(buf), format, args).format();
-}
-} // namespace detail
-
-// For printing into memory_buffer.
-template <typename Char, typename Context>
-FMT_DEPRECATED void printf(detail::buffer<Char>& buf,
- basic_string_view<Char> format,
- basic_format_args<Context> args) {
- return detail::vprintf(buf, format, args);
-}
-using detail::vprintf;
-
-template <typename Range> class printf_arg_formatter;
-
-template <typename Char>
-class basic_printf_parse_context : public basic_format_parse_context<Char> {
- using basic_format_parse_context<Char>::basic_format_parse_context;
-};
-template <typename OutputIt, typename Char> class basic_printf_context;
-
-/**
- \rst
- The ``printf`` argument formatter.
- \endrst
- */
-template <typename Range>
-class printf_arg_formatter : public detail::arg_formatter_base<Range> {
- public:
- using iterator = typename Range::iterator;
-
+// The ``printf`` argument formatter.
+template <typename OutputIt, typename Char>
+class printf_arg_formatter : public arg_formatter<Char> {
private:
- using char_type = typename Range::value_type;
- using base = detail::arg_formatter_base<Range>;
- using context_type = basic_printf_context<iterator, char_type>;
+ using base = arg_formatter<Char>;
+ using context_type = basic_printf_context<OutputIt, Char>;
+ using format_specs = basic_format_specs<Char>;
context_type& context_;
- void write_null_pointer(char) {
- this->specs()->type = 0;
- this->write("(nil)");
- }
-
- void write_null_pointer(wchar_t) {
- this->specs()->type = 0;
- this->write(L"(nil)");
+ OutputIt write_null_pointer(bool is_string = false) {
+ auto s = this->specs;
+ s.type = 0;
+ return write_bytes(this->out, is_string ? "(null)" : "(nil)", s);
}
public:
- using format_specs = typename base::format_specs;
+ printf_arg_formatter(OutputIt iter, format_specs& s, context_type& ctx)
+ : base{iter, s, locale_ref()}, context_(ctx) {}
- /**
- \rst
- Constructs an argument formatter object.
- *buffer* is a reference to the output buffer and *specs* contains format
- specifier information for standard argument types.
- \endrst
- */
- printf_arg_formatter(iterator iter, format_specs& specs, context_type& ctx)
- : base(Range(iter), &specs, detail::locale_ref()), context_(ctx) {}
-
- template <typename T, FMT_ENABLE_IF(fmt::detail::is_integral<T>::value)>
- iterator operator()(T value) {
- // MSVC2013 fails to compile separate overloads for bool and char_type so
- // use std::is_same instead.
- if (std::is_same<T, bool>::value) {
- format_specs& fmt_specs = *this->specs();
- if (fmt_specs.type != 's') return base::operator()(value ? 1 : 0);
- fmt_specs.type = 0;
- this->write(value != 0);
- } else if (std::is_same<T, char_type>::value) {
- format_specs& fmt_specs = *this->specs();
+ OutputIt operator()(monostate value) { return base::operator()(value); }
+
+ template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)>
+ OutputIt operator()(T value) {
+ // MSVC2013 fails to compile separate overloads for bool and Char so use
+ // std::is_same instead.
+ if (std::is_same<T, Char>::value) {
+ format_specs fmt_specs = this->specs;
if (fmt_specs.type && fmt_specs.type != 'c')
return (*this)(static_cast<int>(value));
fmt_specs.sign = sign::none;
// ignored for non-numeric types
if (fmt_specs.align == align::none || fmt_specs.align == align::numeric)
fmt_specs.align = align::right;
- return base::operator()(value);
- } else {
- return base::operator()(value);
+ return write<Char>(this->out, static_cast<Char>(value), fmt_specs);
}
- return this->out();
+ return base::operator()(value);
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
- iterator operator()(T value) {
+ OutputIt operator()(T value) {
return base::operator()(value);
}
/** Formats a null-terminated C string. */
- iterator operator()(const char* value) {
- if (value)
- base::operator()(value);
- else if (this->specs()->type == 'p')
- write_null_pointer(char_type());
- else
- this->write("(null)");
- return this->out();
+ OutputIt operator()(const char* value) {
+ if (value) return base::operator()(value);
+ return write_null_pointer(this->specs.type != 'p');
}
/** Formats a null-terminated wide C string. */
- iterator operator()(const wchar_t* value) {
- if (value)
- base::operator()(value);
- else if (this->specs()->type == 'p')
- write_null_pointer(char_type());
- else
- this->write(L"(null)");
- return this->out();
+ OutputIt operator()(const wchar_t* value) {
+ if (value) return base::operator()(value);
+ return write_null_pointer(this->specs.type != 'p');
}
- iterator operator()(basic_string_view<char_type> value) {
+ OutputIt operator()(basic_string_view<Char> value) {
return base::operator()(value);
}
- iterator operator()(monostate value) { return base::operator()(value); }
-
/** Formats a pointer. */
- iterator operator()(const void* value) {
- if (value) return base::operator()(value);
- this->specs()->type = 0;
- write_null_pointer(char_type());
- return this->out();
+ OutputIt operator()(const void* value) {
+ return value ? base::operator()(value) : write_null_pointer();
}
/** Formats an argument of a custom (user-defined) type. */
- iterator operator()(typename basic_format_arg<context_type>::handle handle) {
- handle.format(context_.parse_context(), context_);
- return this->out();
+ OutputIt operator()(typename basic_format_arg<context_type>::handle handle) {
+ auto parse_ctx =
+ basic_printf_parse_context<Char>(basic_string_view<Char>());
+ handle.format(parse_ctx, context_);
+ return this->out;
}
};
-template <typename T> struct printf_formatter {
- printf_formatter() = delete;
-
- template <typename ParseContext>
- auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- return ctx.begin();
- }
-
- template <typename FormatContext>
- auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) {
- detail::format_value(detail::get_container(ctx.out()), value);
- return ctx.out();
- }
-};
-
-/**
- This template formats data and writes the output through an output iterator.
- */
-template <typename OutputIt, typename Char> class basic_printf_context {
- public:
- /** The character type for the output. */
- using char_type = Char;
- using iterator = OutputIt;
- using format_arg = basic_format_arg<basic_printf_context>;
- using parse_context_type = basic_printf_parse_context<Char>;
- template <typename T> using formatter_type = printf_formatter<T>;
-
- private:
- using format_specs = basic_format_specs<char_type>;
-
- OutputIt out_;
- basic_format_args<basic_printf_context> args_;
- parse_context_type parse_ctx_;
-
- static void parse_flags(format_specs& specs, const Char*& it,
- const Char* end);
-
- // Returns the argument with specified index or, if arg_index is -1, the next
- // argument.
- format_arg get_arg(int arg_index = -1);
-
- // Parses argument index, flags and width and returns the argument index.
- int parse_header(const Char*& it, const Char* end, format_specs& specs);
-
- public:
- /**
- \rst
- Constructs a ``printf_context`` object. References to the arguments are
- stored in the context object so make sure they have appropriate lifetimes.
- \endrst
- */
- basic_printf_context(OutputIt out, basic_string_view<char_type> format_str,
- basic_format_args<basic_printf_context> args)
- : out_(out), args_(args), parse_ctx_(format_str) {}
-
- OutputIt out() { return out_; }
- void advance_to(OutputIt it) { out_ = it; }
-
- detail::locale_ref locale() { return {}; }
-
- format_arg arg(int id) const { return args_.get(id); }
-
- parse_context_type& parse_context() { return parse_ctx_; }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- parse_ctx_.on_error(message);
- }
-
- /** Formats stored arguments and writes the output to the range. */
- template <typename ArgFormatter = printf_arg_formatter<buffer_range<Char>>>
- OutputIt format();
-};
-
-template <typename OutputIt, typename Char>
-void basic_printf_context<OutputIt, Char>::parse_flags(format_specs& specs,
- const Char*& it,
- const Char* end) {
+template <typename Char>
+void parse_flags(basic_format_specs<Char>& specs, const Char*& it,
+ const Char* end) {
for (; it != end; ++it) {
switch (*it) {
case '-':
}
}
-template <typename OutputIt, typename Char>
-typename basic_printf_context<OutputIt, Char>::format_arg
-basic_printf_context<OutputIt, Char>::get_arg(int arg_index) {
- if (arg_index < 0)
- arg_index = parse_ctx_.next_arg_id();
- else
- parse_ctx_.check_arg_id(--arg_index);
- return detail::get_arg(*this, arg_index);
-}
-
-template <typename OutputIt, typename Char>
-int basic_printf_context<OutputIt, Char>::parse_header(const Char*& it,
- const Char* end,
- format_specs& specs) {
+template <typename Char, typename GetArg>
+int parse_header(const Char*& it, const Char* end,
+ basic_format_specs<Char>& specs, GetArg get_arg) {
int arg_index = -1;
- char_type c = *it;
+ Char c = *it;
if (c >= '0' && c <= '9') {
// Parse an argument index (if followed by '$') or a width possibly
// preceded with '0' flag(s).
- detail::error_handler eh;
- int value = parse_nonnegative_int(it, end, eh);
+ int value = parse_nonnegative_int(it, end, -1);
if (it != end && *it == '$') { // value is an argument index
++it;
- arg_index = value;
+ arg_index = value != -1 ? value : max_value<int>();
} else {
if (c == '0') specs.fill[0] = '0';
if (value != 0) {
// Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now.
+ if (value == -1) FMT_THROW(format_error("number is too big"));
specs.width = value;
return arg_index;
}
// Parse width.
if (it != end) {
if (*it >= '0' && *it <= '9') {
- detail::error_handler eh;
- specs.width = parse_nonnegative_int(it, end, eh);
+ specs.width = parse_nonnegative_int(it, end, -1);
+ if (specs.width == -1) FMT_THROW(format_error("number is too big"));
} else if (*it == '*') {
++it;
specs.width = static_cast<int>(visit_format_arg(
- detail::printf_width_handler<char_type>(specs), get_arg()));
+ detail::printf_width_handler<Char>(specs), get_arg(-1)));
}
}
return arg_index;
}
-template <typename OutputIt, typename Char>
-template <typename ArgFormatter>
-OutputIt basic_printf_context<OutputIt, Char>::format() {
- auto out = this->out();
- const Char* start = parse_ctx_.begin();
- const Char* end = parse_ctx_.end();
+template <typename Char, typename Context>
+void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
+ basic_format_args<Context> args) {
+ using OutputIt = buffer_appender<Char>;
+ auto out = OutputIt(buf);
+ auto context = basic_printf_context<OutputIt, Char>(out, args);
+ auto parse_ctx = basic_printf_parse_context<Char>(format);
+
+ // Returns the argument with specified index or, if arg_index is -1, the next
+ // argument.
+ auto get_arg = [&](int arg_index) {
+ if (arg_index < 0)
+ arg_index = parse_ctx.next_arg_id();
+ else
+ parse_ctx.check_arg_id(--arg_index);
+ return detail::get_arg(context, arg_index);
+ };
+
+ const Char* start = parse_ctx.begin();
+ const Char* end = parse_ctx.end();
auto it = start;
while (it != end) {
- char_type c = *it++;
- if (c != '%') continue;
+ if (!detail::find<false, Char>(it, end, '%', it)) {
+ it = end; // detail::find leaves it == nullptr if it doesn't find '%'
+ break;
+ }
+ Char c = *it++;
if (it != end && *it == c) {
- out = std::copy(start, it, out);
+ out = detail::write(
+ out, basic_string_view<Char>(start, detail::to_unsigned(it - start)));
start = ++it;
continue;
}
- out = std::copy(start, it - 1, out);
+ out = detail::write(out, basic_string_view<Char>(
+ start, detail::to_unsigned(it - 1 - start)));
- format_specs specs;
+ basic_format_specs<Char> specs;
specs.align = align::right;
// Parse argument index, flags and width.
- int arg_index = parse_header(it, end, specs);
- if (arg_index == 0) on_error("argument not found");
+ int arg_index = parse_header(it, end, specs, get_arg);
+ if (arg_index == 0) parse_ctx.on_error("argument not found");
// Parse precision.
if (it != end && *it == '.') {
++it;
c = it != end ? *it : 0;
if ('0' <= c && c <= '9') {
- detail::error_handler eh;
- specs.precision = parse_nonnegative_int(it, end, eh);
+ specs.precision = parse_nonnegative_int(it, end, 0);
} else if (c == '*') {
++it;
specs.precision = static_cast<int>(
- visit_format_arg(detail::printf_precision_handler(), get_arg()));
+ visit_format_arg(detail::printf_precision_handler(), get_arg(-1)));
} else {
specs.precision = 0;
}
}
- format_arg arg = get_arg(arg_index);
+ auto arg = get_arg(arg_index);
// For d, i, o, u, x, and X conversion specifiers, if a precision is
// specified, the '0' flag is ignored
if (specs.precision >= 0 && arg.is_integral())
- specs.fill[0] = ' '; // Ignore '0' flag for non-numeric types or if '-' present.
+ specs.fill[0] =
+ ' '; // Ignore '0' flag for non-numeric types or if '-' present.
if (specs.precision >= 0 && arg.type() == detail::type::cstring_type) {
auto str = visit_format_arg(detail::get_cstring<Char>(), arg);
auto str_end = str + specs.precision;
auto nul = std::find(str, str_end, Char());
- arg = detail::make_arg<basic_printf_context>(basic_string_view<Char>(
- str,
- detail::to_unsigned(nul != str_end ? nul - str : specs.precision)));
+ arg = detail::make_arg<basic_printf_context<OutputIt, Char>>(
+ basic_string_view<Char>(
+ str, detail::to_unsigned(nul != str_end ? nul - str
+ : specs.precision)));
}
if (specs.alt && visit_format_arg(detail::is_zero_int(), arg))
specs.alt = false;
// Parse length and convert the argument to the required type.
c = it != end ? *it++ : 0;
- char_type t = it != end ? *it : 0;
+ Char t = it != end ? *it : 0;
using detail::convert_arg;
switch (c) {
case 'h':
specs.type = 'd';
break;
case 'c':
- visit_format_arg(detail::char_converter<basic_printf_context>(arg),
- arg);
+ visit_format_arg(
+ detail::char_converter<basic_printf_context<OutputIt, Char>>(arg),
+ arg);
break;
}
}
start = it;
// Format argument.
- visit_format_arg(ArgFormatter(out, specs, *this), arg);
+ out = visit_format_arg(
+ detail::printf_arg_formatter<OutputIt, Char>(out, specs, context), arg);
}
- return std::copy(start, it, out);
+ detail::write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
}
+FMT_END_DETAIL_NAMESPACE
template <typename Char>
using basic_printf_context_t =
- basic_printf_context<std::back_insert_iterator<detail::buffer<Char>>, Char>;
+ basic_printf_context<detail::buffer_appender<Char>, Char>;
using printf_context = basic_printf_context_t<char>;
using wprintf_context = basic_printf_context_t<wchar_t>;
arguments and can be implicitly converted to `~fmt::printf_args`.
\endrst
*/
-template <typename... Args>
-inline format_arg_store<printf_context, Args...> make_printf_args(
- const Args&... args) {
+template <typename... T>
+inline auto make_printf_args(const T&... args)
+ -> format_arg_store<printf_context, T...> {
return {args...};
}
arguments and can be implicitly converted to `~fmt::wprintf_args`.
\endrst
*/
-template <typename... Args>
-inline format_arg_store<wprintf_context, Args...> make_wprintf_args(
- const Args&... args) {
+template <typename... T>
+inline auto make_wprintf_args(const T&... args)
+ -> format_arg_store<wprintf_context, T...> {
return {args...};
}
template <typename S, typename Char = char_t<S>>
-inline std::basic_string<Char> vsprintf(
- const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
+inline auto vsprintf(
+ const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> std::basic_string<Char> {
basic_memory_buffer<Char> buffer;
- vprintf(buffer, to_string_view(format), args);
+ vprintf(buffer, to_string_view(fmt), args);
return to_string(buffer);
}
std::string message = fmt::sprintf("The answer is %d", 42);
\endrst
*/
-template <typename S, typename... Args,
+template <typename S, typename... T,
typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
-inline std::basic_string<Char> sprintf(const S& format, const Args&... args) {
+inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> {
using context = basic_printf_context_t<Char>;
- return vsprintf(to_string_view(format), make_format_args<context>(args...));
+ return vsprintf(to_string_view(fmt), fmt::make_format_args<context>(args...));
}
template <typename S, typename Char = char_t<S>>
-inline int vfprintf(
- std::FILE* f, const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
+inline auto vfprintf(
+ std::FILE* f, const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> int {
basic_memory_buffer<Char> buffer;
- vprintf(buffer, to_string_view(format), args);
+ vprintf(buffer, to_string_view(fmt), args);
size_t size = buffer.size();
return std::fwrite(buffer.data(), sizeof(Char), size, f) < size
? -1
fmt::fprintf(stderr, "Don't %s!", "panic");
\endrst
*/
-template <typename S, typename... Args,
- typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
-inline int fprintf(std::FILE* f, const S& format, const Args&... args) {
+template <typename S, typename... T, typename Char = char_t<S>>
+inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int {
using context = basic_printf_context_t<Char>;
- return vfprintf(f, to_string_view(format),
- make_format_args<context>(args...));
+ return vfprintf(f, to_string_view(fmt),
+ fmt::make_format_args<context>(args...));
}
template <typename S, typename Char = char_t<S>>
-inline int vprintf(
- const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
- return vfprintf(stdout, to_string_view(format), args);
+inline auto vprintf(
+ const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> int {
+ return vfprintf(stdout, to_string_view(fmt), args);
}
/**
fmt::printf("Elapsed time: %.2f seconds", 1.23);
\endrst
*/
-template <typename S, typename... Args,
- FMT_ENABLE_IF(detail::is_string<S>::value)>
-inline int printf(const S& format_str, const Args&... args) {
- using context = basic_printf_context_t<char_t<S>>;
- return vprintf(to_string_view(format_str),
- make_format_args<context>(args...));
+template <typename S, typename... T, FMT_ENABLE_IF(detail::is_string<S>::value)>
+inline auto printf(const S& fmt, const T&... args) -> int {
+ return vprintf(
+ to_string_view(fmt),
+ fmt::make_format_args<basic_printf_context_t<char_t<S>>>(args...));
}
template <typename S, typename Char = char_t<S>>
-inline int vfprintf(
- std::basic_ostream<Char>& os, const S& format,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args) {
+FMT_DEPRECATED auto vfprintf(
+ std::basic_ostream<Char>& os, const S& fmt,
+ basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+ -> int {
basic_memory_buffer<Char> buffer;
- vprintf(buffer, to_string_view(format), args);
- detail::write(os, buffer);
+ vprintf(buffer, to_string_view(fmt), args);
+ os.write(buffer.data(), static_cast<std::streamsize>(buffer.size()));
return static_cast<int>(buffer.size());
}
-
-/** Formats arguments and writes the output to the range. */
-template <typename ArgFormatter, typename Char,
- typename Context =
- basic_printf_context<typename ArgFormatter::iterator, Char>>
-typename ArgFormatter::iterator vprintf(
- detail::buffer<Char>& out, basic_string_view<Char> format_str,
- basic_format_args<type_identity_t<Context>> args) {
- typename ArgFormatter::iterator iter(out);
- Context(iter, format_str, args).template format<ArgFormatter>();
- return iter;
+template <typename S, typename... T, typename Char = char_t<S>>
+FMT_DEPRECATED auto fprintf(std::basic_ostream<Char>& os, const S& fmt,
+ const T&... args) -> int {
+ return vfprintf(os, to_string_view(fmt),
+ fmt::make_format_args<basic_printf_context_t<Char>>(args...));
}
-/**
- \rst
- Prints formatted data to the stream *os*.
-
- **Example**::
-
- fmt::fprintf(cerr, "Don't %s!", "panic");
- \endrst
- */
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline int fprintf(std::basic_ostream<Char>& os, const S& format_str,
- const Args&... args) {
- using context = basic_printf_context_t<Char>;
- return vfprintf(os, to_string_view(format_str),
- make_format_args<context>(args...));
-}
+FMT_MODULE_EXPORT_END
FMT_END_NAMESPACE
#endif // FMT_PRINTF_H_
projects / ceph.git / blobdiff