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* Sync with the 202601-stable Gnulib code (4a3650d887) * Ignore more deps stuff in gnulib * Remove autogenerated gnulib files * Ignore more gnulib generated headers
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/* vsprintf with automatic memory allocation.
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Copyright (C) 2002-2004, 2007-2026 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 _VASNPRINTF_H
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#define _VASNPRINTF_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 va_list. */
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#include <stdarg.h>
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/* Get size_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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/* Write formatted output to a string dynamically allocated with malloc().
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You can pass a preallocated buffer for the result in RESULTBUF and its
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size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
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If successful, return the address of the string (this may be = RESULTBUF
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if no dynamic memory allocation was necessary) and set *LENGTHP to the
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number of resulting bytes, excluding the trailing NUL. Upon error, set
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errno and return NULL.
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When dynamic memory allocation occurs, the preallocated buffer is left
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alone (with possibly modified contents). This makes it possible to use
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a statically allocated or stack-allocated buffer, like this:
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char buf[100];
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size_t len = sizeof (buf);
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char *output = vasnprintf (buf, &len, format, args);
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if (output == NULL)
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... error handling ...;
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else
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{
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... use the output string ...;
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if (output != buf)
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free (output);
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}
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*/
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#if REPLACE_VASNPRINTF
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# define asnprintf rpl_asnprintf
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# define vasnprintf rpl_vasnprintf
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#endif
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extern char * asnprintf (char *restrict resultbuf, size_t *lengthp,
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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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extern char * vasnprintf (char *restrict resultbuf, size_t *lengthp,
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const char *format, va_list args)
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_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 0));
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#ifdef __cplusplus
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}
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#endif
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#endif /* _VASNPRINTF_H */
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