68 lines
2.6 KiB
C
Executable File
68 lines
2.6 KiB
C
Executable File
/* snprintf in C locale.
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Copyright (C) 2012-2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef _C_SNPRINTF_H
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#define _C_SNPRINTF_H
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/* This file uses _GL_ATTRIBUTE_FORMAT. */
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#if !_GL_CONFIG_H_INCLUDED
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#error "Please include config.h first."
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#endif
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/* Get size_t, ptrdiff_t. */
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#include <stddef.h>
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/* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD. */
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Prints formatted output to string STR. Similar to sprintf, but the
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additional parameter SIZE limits how much is written into STR.
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STR may be NULL, in which case nothing will be written.
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Returns the string length of the formatted string (which may be larger
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than SIZE). Upon failure, returns -1 with errno set.
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Failure code EOVERFLOW can only occur when a width > INT_MAX is used.
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Therefore, if the format string is valid and does not use %ls/%lc
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directives nor widths, the only possible failure code is ENOMEM.
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Formatting takes place in the C locale, that is, the decimal point
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used in floating-point formatting directives is always '.'. */
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extern ptrdiff_t c_snzprintf (char *restrict str, size_t size,
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const char *format, ...)
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_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4));
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/* Prints formatted output to string STR. Similar to sprintf, but the
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additional parameter SIZE limits how much is written into STR.
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STR may be NULL, in which case nothing will be written.
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Returns the string length of the formatted string (which may be larger
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than SIZE). Upon failure, returns -1 with errno set.
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Formatting takes place in the C locale, that is, the decimal point
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used in floating-point formatting directives is always '.'. */
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extern int c_snprintf (char *restrict str, size_t size,
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const char *format, ...)
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_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4));
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#ifdef __cplusplus
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}
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#endif
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#endif /* _C_SNPRINTF_H */
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