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Document output_file

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This commit is contained in:
Victor Zverovich 2021-01-09 07:18:56 -08:00
parent 018688da2a
commit 061e364b25
3 changed files with 28 additions and 4 deletions
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11
doc/api.rst
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@ -16,6 +16,7 @@ The {fmt} library API consists of the following parts:
* :ref:`fmt/chrono.h <chrono-api>`: date and time formatting
* :ref:`fmt/compile.h <compile-api>`: format string compilation
* :ref:`fmt/color.h <color-api>`: terminal color and text style
* :ref:`fmt/os.h <os-api>`: system APIs
* :ref:`fmt/ostream.h <ostream-api>`: ``std::ostream`` support
* :ref:`fmt/printf.h <printf-api>`: ``printf`` formatting
@ -57,7 +58,7 @@ participate in an overload resolution if the latter is not a string.
.. _print:
.. doxygenfunction:: print(const S &format_str, Args&&... args)
.. doxygenfunction:: fmt::print(const S &format_str, Args&&... args)
.. doxygenfunction:: vprint(string_view, format_args)
.. doxygenfunction:: print(std::FILE *f, const S &format_str, Args&&... args)
@ -471,6 +472,14 @@ Terminal color and text style
.. doxygenfunction:: bg(detail::color_type)
.. _os-api:
System APIs
===========
.. doxygenclass:: fmt::ostream
:members:
.. _ostream-api:
``std::ostream`` Support

1
doc/build.py
View File

@ -55,6 +55,7 @@ def build_docs(version='dev', **kwargs):
ALIASES += "endrst=\endverbatim"
MACRO_EXPANSION = YES
PREDEFINED = _WIN32=1 \
__linux__=1 \
FMT_USE_VARIADIC_TEMPLATES=1 \
FMT_USE_RVALUE_REFERENCES=1 \
FMT_USE_USER_DEFINED_LITERALS=1 \

20
include/fmt/os.h
View File

@ -373,7 +373,7 @@ struct ostream_params {
static constexpr detail::buffer_size buffer_size;
// A fast output stream which is not thread-safe.
/** A fast output stream which is not thread-safe. */
class ostream final : private detail::buffer<char> {
private:
file file_;
@ -410,6 +410,10 @@ class ostream final : private detail::buffer<char> {
file_.close();
}
/**
Formats ``args`` according to specifications in ``format_str`` and writes
the output to the file.
*/
template <typename S, typename... Args>
void print(const S& format_str, Args&&... args) {
format_to(detail::buffer_appender<char>(*this), format_str,
@ -418,9 +422,19 @@ class ostream final : private detail::buffer<char> {
};
/**
Opens a file for writing. Supported parameters passed in `params`:
* ``<integer>``: Output flags (``file::WRONLY | file::CREATE`` by default)
\rst
Opens a file for writing. Supported parameters passed in *params*:
* ``<integer>``: Flags passed to `open
<https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_
(``file::WRONLY | file::CREATE`` by default)
* ``buffer_size=<integer>``: Output buffer size
**Example**::
auto out = fmt::output_file("guide.txt");
out.print("Don't {}", "Panic");
\endrst
*/
template <typename... T>
inline ostream output_file(cstring_view path, T... params) {