/**
* slibc — Yet another C library
* Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _STDIO_H
#define _STDIO_H
#include <slibc/version.h>
#include <slibc/features.h>
#define __NEED_fpos_t /* TODO not implemented */
#define __NEED_off_t
#define __NEED_size_t
#define __NEED_ssize_t
#define __NEED_wchar_t
#define __NEED_va_list
#if __STDC_VERSION__ >= 201112L
# define __NEED_max_align_t
#endif
#define FILE void /* TODO temporary */
#include <bits/types.h>
/* TODO implement I/O */
int fflush(FILE*);
#define stdin ((void*)1) /* TODO temporary */
#define stdout ((void*)2) /* TODO temporary */
#define stderr ((void*)3) /* TODO temporary */
/**
* This function is identical to `fprintf` with
* `stdout` as the first argument.
*
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int printf(const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1), format(slibc_printf, 1, 2))));
/**
* Print a formatted string to a stream.
*
* TODO list format rules for fprintf
*
* @param stream The output stream.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int fprintf(FILE* restrict, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2), format(slibc_printf, 2, 3))));
#if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `fprintf`,
* except it does not lock the stream.
*
* This is a slibc extension.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite_unlocked`.
*/
int fprintf_unlocked(FILE* restrict, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2), format(slibc_printf, 2, 3))));
#endif
/**
* This function is identical to `fprintf`,
* except it is limited to file descriptor-backed
* streams, and uses the file descriptor as the
* first argument rather than the stream.
*
* @param fd The file descriptor.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `write`.
*/
int dprintf(int, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(2), format(slibc_printf, 2, 3))));
/**
* This function is identical to `fprintf`,
* except it is limited to buffer-backed
* streams, and uses the buffer as the first
* argument rather than then the stream.
*
* This is identical to `sprintf` with
* `SIZE_MAX` as the second argument.
*
* @param buffer The output buffer.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
*/
int sprintf(char* restrict, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2), format(slibc_printf, 2, 3))));
/**
* This function is identical to `sprintf`,
* expect it truncates the output.
*
* @param buffer The output buffer.
* @param size The allocation size of `buffer`.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte, that would have been written
* if `size` was ignored. On error, a negative
* value (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes would have been written; in slibc,
* `INT_MAX` is returned if more would have
* been written, you can use "%zn" to find the
* actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
*/
int snprintf(char* restrict, size_t, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(3), format(slibc_printf, 3, 4))));
#if defined(_GNU_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `sprintf`,
* except it allocates a sufficiently large
* buffer.
*
* This is a GNU extension.
*
* @param buffer Output parameter for the output buffer.
* On error the content of this pointer is undefined.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int asprintf(char** restrict, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2), format(slibc_printf, 2, 3), warn_unused_result)));
#endif
#if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `asprintf`,
* except it can reuse allocated buffers.
*
* This is a slibc extension.
*
* @param buffer Reference parameter for the output buffer.
* It should point to the buffer than shall
* be used, or point to `NULL` if a new buffer
* shall be allocated. It will be updated with
* a new buffer if it points to `NULL`, or the
* new pointer if `buffer` needed to be reallocated.
* On error, this pointer will only have been
* updated if the buffer was reallocated during
* the call; if it pointed to `NULL`, it will
* still point to `NULL`.
* @param size Reference parameter for the buffer size.
* It shall point to a variable whose value is
* the allocation size of `*buffer`, or point to
* a variable whose value is zero if `*buffer`
* is `NULL`
* @param offset The offset in the buffer where the function
* shall start the printing.
* @param secure Non-zero if the function must override the
* buffer with zero before freeing it if it
* creates a new allocation.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int bprintf(char** restrict, size_t* restrict, size_t, int, const char* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2, 5), format(slibc_printf, 5, 6), warn_unused_result)));
#endif
/**
* This function is identical to `printf`,
* except it uses `va_list` instead of variadic argument.
*
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int vprintf(const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1))));
/**
* This function is identical to `fprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int vfprintf(FILE* restrict, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
#if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `fprintf_unlocked`,
* except it uses `va_list` instead of variadic argument.
*
* This is a slibc extension.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite_unlocked`.
*/
int vfprintf_unlocked(FILE* restrict, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
#endif
/**
* This function is identical to `vdprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param fd The file descriptor.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` bytes are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `write`.
*/
int vdprintf(int, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(2))));
/**
* This function is identical to `sprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param buffer The output buffer.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
*/
int vsprintf(char* restrict, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
/**
* This function is identical to `snprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param buffer The output buffer.
* @param size The allocation size of `buffer`.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte, that would have been written
* if `size` was ignored. On error, a negative
* value (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes would have been written; in slibc,
* `INT_MAX` is returned if more would have
* been written, you can use "%zn" to find the
* actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
*/
int vsnprintf(char* restrict, size_t, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 3))));
#if defined(_GNU_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `asprintf`,
* except it uses `va_list` instead of variadic argument.
*
* This is a GNU extension.
*
* @param buffer Output parameter for the output buffer.
* On error the content of this pointer is undefined.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int vasprintf(char** restrict, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2), warn_unused_result)));
#endif
#if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `bprintf`,
* except it uses `va_list` instead of variadic argument.
*
* This is a slibc extension.
*
* @param buffer Reference parameter for the output buffer.
* It should point to the buffer than shall
* be used, or point to `NULL` if a new buffer
* shall be allocated. It will be updated with
* a new buffer if it points to `NULL`, or the
* new pointer if `buffer` needed to be reallocated.
* On error, this pointer will only have been
* updated if the buffer was reallocated during
* the call; if it pointed to `NULL`, it will
* still point to `NULL`.
* @param size Reference parameter for the buffer size.
* It shall point to a variable whose value is
* the allocation size of `*buffer`, or point to
* a variable whose value is zero if `*buffer`
* is `NULL`
* @param offset The offset in the buffer where the function
* shall start the printing.
* @param secure Non-zero if the function must override the
* buffer with zero before freeing it if it
* creates a new allocation.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written bytes, excluding
* the NUL byte. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* bytes are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int vbprintf(char** restrict, size_t* restrict, size_t, int, const char* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2, 5), warn_unused_result)));
#endif
#if !defined(__PORTABLE) /* wchar_t is not portable. */
/**
* This function is identical to `printf` except
* it uses wide characters.
*
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int wprintf(const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1))));
/**
* This function is identical to `fprintf` except
* it uses wide characters.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int fwprintf(FILE* restrict, const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
# if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `fprintf_unlocked` except
* it uses wide characters.
*
* This is a slibc extension added for completeness.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite_unlocked`.
*/
int fwprintf_unlocked(FILE* restrict, const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
/**
* This function is identical to `dprintf` except
* it uses wide characters.
*
* This is a slibc extension added for completeness.
*
* @param fd The file descriptor.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `write`.
*/
int dwprintf(int, const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(2))));
# endif
/**
* This function is identical to `snprintf`
* (not `sprintf`) except it uses wide characters.
*
* @param buffer The output buffer.
* @param size The allocation size of `buffer`.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters, excluding
* the NUL character, that would have been written
* if `size` was ignored. On error, a negative
* value (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* characters would have been written; in slibc,
* `INT_MAX` is returned if more would have
* been written, you can use "%zn" to find the
* actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
*/
int swprintf(wchar_t* restrict, size_t, const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(3))));
# if defined(_GNU_SOURCE) && defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `aswprintf` except
* it uses wide characters.
*
* This is a slibc extension added for completeness.
* This is only available if GNU extensions are enabled.
*
* @param buffer Output parameter for the output buffer.
* On error the content of this pointer is undefined.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters, excluding
* the NUL character. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* characters are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int aswprintf(wchar_t** restrict, const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2), warn_unused_result)));
# endif
# if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `bprintf` except
* it uses wide characters.
*
* This is a slibc extension added for completeness.
*
* @param buffer Reference parameter for the output buffer.
* It should point to the buffer than shall
* be used, or point to `NULL` if a new buffer
* shall be allocated. It will be updated with
* a new buffer if it points to `NULL`, or the
* new pointer if `buffer` needed to be reallocated.
* On error, this pointer will only have been
* updated if the buffer was reallocated during
* the call; if it pointed to `NULL`, it will
* still point to `NULL`.
* @param size Reference parameter for the buffer size,
* in `wchar_t`.
* It shall point to a variable whose value is
* the allocation size of `*buffer`, or point to
* a variable whose value is zero if `*buffer`
* is `NULL`
* @param offset The offset in the buffer where the function
* shall start the printing.
* @param secure Non-zero if the function must override the
* buffer with zero before freeing it if it
* creates a new allocation.
* @param format The formatting-string.
* @param ... The formatting-arguments.
* @return The number of written characters, excluding
* the NUL character. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* characters are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int bwprintf(wchar_t** restrict, size_t* restrict, size_t, int, const wchar_t* restrict, ...)
__GCC_ONLY(__attribute__((nonnull(1, 2, 5), warn_unused_result)));
# endif
/**
* This function is identical to `wprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int vwprintf(const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1))));
/**
* This function is identical to `fwprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite`.
*/
int vfwprintf(FILE* restrict, const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
# if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `fwprintf_unlocked`,
* except it uses `va_list` instead of variadic argument.
*
* This is a slibc extension added for completeness.
*
* @param stream The output stream.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `fwrite_unlocked`.
*/
int vfwprintf_unlocked(FILE* restrict, const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2))));
/**
* This function is identical to `vdprintf`,
* except it uses `va_list` instead of variadic argument.
*
* This is a slibc extension added for completeness.
*
* @param fd The file descriptor.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters.
* On error, a negative value (namely -1
* in this implementation) is returned.
* It is unspecified what shall happen if
* more than `INT_MAX` characters are written;
* in slibc, `INT_MAX` is returned if more
* is written, you can use "%zn" to find
* the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws Any error specified for `write`.
*/
int vdwprintf(int, const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(2))));
# endif
/**
* This function is identical to `swprintf`,
* except it uses `va_list` instead of variadic argument.
*
* @param buffer The output buffer.
* @param size The allocation size of `buffer`.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters, excluding
* the NUL character, that would have been written
* if `size` was ignored. On error, a negative
* value (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* characters would have been written; in slibc,
* `INT_MAX` is returned if more would have
* been written, you can use "%zn" to find the
* actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
*/
int vswprintf(wchar_t* restrict, size_t, const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(3))));
# if defined(_GNU_SOURCE) && defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `aswprintf`,
* except it uses `va_list` instead of variadic argument.
*
* This is a slibc extension added for completeness.
* This is only available if GNU extensions are enabled.
*
* @param buffer Output parameter for the output buffer.
* On error the content of this pointer is undefined.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters, excluding
* the NUL character. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* characters are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int vaswprintf(wchar_t** restrict, const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2), warn_unused_result)));
# endif
# if defined(_SLIBC_SOURCE) && !defined(__PORTABLE)
/**
* This function is identical to `bwprintf`,
* except it uses `va_list` instead of variadic argument.
*
* This is a slibc extension added for completeness.
*
* @param buffer Reference parameter for the output buffer.
* It should point to the buffer than shall
* be used, or point to `NULL` if a new buffer
* shall be allocated. It will be updated with
* a new buffer if it points to `NULL`, or the
* new pointer if `buffer` needed to be reallocated.
* On error, this pointer will only have been
* updated if the buffer was reallocated during
* the call; if it pointed to `NULL`, it will
* still point to `NULL`.
* @param size Reference parameter for the buffer size,
* in `wchar_t`.
* It shall point to a variable whose value is
* the allocation size of `*buffer`, or point to
* a variable whose value is zero if `*buffer`
* is `NULL`
* @param offset The offset in the buffer where the function
* shall start the printing.
* @param secure Non-zero if the function must override the
* buffer with zero before freeing it if it
* creates a new allocation.
* @param format The formatting-string.
* @param args The formatting-arguments.
* @return The number of written characters, excluding
* the NUL character. On error, a negative value
* (namely -1 in this implementation) is
* returned. It is unspecified what shall
* happen if more than `INT_MAX` non-NUL
* characters are written; in slibc, `INT_MAX`
* is returned if more is written, you can
* use "%zn" to find the actual length.
*
* @throws EINVAL `format` contained unsupported formatting codes.
* @throws ENOMEM The process cannot allocation the
* sufficient amount of memory.
*/
int vbwprintf(wchar_t** restrict, size_t* restrict, size_t, int, const wchar_t* restrict, va_list)
__GCC_ONLY(__attribute__((nonnull(1, 2, 5), warn_unused_result)));
# endif
#endif
#endif
