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45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* Write repeated characters to struct __*printf_buffer. Generic version.
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Copyright (C) 2022-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <string.h>
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void
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Xprintf (buffer_pad_1) (struct Xprintf_buffer *buf, CHAR_T ch, size_t count)
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{
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if (__glibc_unlikely (Xprintf_buffer_has_failed (buf)))
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return;
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do
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{
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/* Proactively make room. __*printf_buffer_pad has already
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checked for a zero-length write, so this function is only
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called when there is actually data to write. */
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if (buf->write_ptr == buf->write_end && !Xprintf_buffer_flush (buf))
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return;
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assert (buf->write_ptr != buf->write_end);
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size_t to_fill = buf->write_end - buf->write_ptr;
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if (to_fill > count)
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to_fill = count;
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MEMSET (buf->write_ptr, ch, to_fill);
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buf->write_ptr += to_fill;
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count -= to_fill;
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}
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while (count > 0);
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}
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