vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/* Output stream that accumulates the output in memory.
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Copyright (C) 2006-2007, 2019-2020, 2023 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2006.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include "memory-ostream.h"
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#include <stdlib.h>
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#include <string.h>
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#include "error.h"
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#include "xalloc.h"
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#include "xsize.h"
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#include "gettext.h"
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#define _(str) gettext (str)
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struct memory_ostream : struct ostream
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{
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fields:
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char *buffer; /* Buffer containing the accumulated output. */
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size_t buflen; /* Number of bytes stored so far. */
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size_t allocated; /* Allocated size of the buffer. */
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};
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/* Implementation of ostream_t methods. */
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static void
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memory_ostream::write_mem (memory_ostream_t stream,
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const void *data, size_t len)
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{
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if (len > 0)
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{
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if (len > stream->allocated - stream->buflen)
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{
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size_t new_allocated =
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xmax (xsum (stream->buflen, len),
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xsum (stream->allocated, stream->allocated));
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if (size_overflow_p (new_allocated))
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error (EXIT_FAILURE, 0,
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_("%s: too much output, buffer size overflow"),
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"memory_ostream");
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stream->buffer = (char *) xrealloc (stream->buffer, new_allocated);
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stream->allocated = new_allocated;
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}
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memcpy (stream->buffer + stream->buflen, data, len);
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stream->buflen += len;
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}
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}
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static void
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memory_ostream::flush (memory_ostream_t stream, ostream_flush_scope_t scope)
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{
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}
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static void
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memory_ostream::free (memory_ostream_t stream)
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{
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free (stream->buffer);
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free (stream);
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}
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/* Implementation of memory_ostream_t methods. */
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static void
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memory_ostream::contents (memory_ostream_t stream,
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const void **bufp, size_t *buflenp)
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{
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*bufp = stream->buffer;
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*buflenp = stream->buflen;
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}
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/* Constructor. */
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memory_ostream_t
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memory_ostream_create (void)
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{
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memory_ostream_t stream = XMALLOC (struct memory_ostream_representation);
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stream->base.vtable = &memory_ostream_vtable;
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stream->allocated = 250;
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stream->buffer = XNMALLOC (stream->allocated, char);
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stream->buflen = 0;
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return stream;
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}
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/* Instanceof test. */
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bool
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is_instance_of_memory_ostream (ostream_t stream)
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{
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return IS_INSTANCE (stream, ostream, memory_ostream);
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}
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