From: Bruno Haible Date: Tue, 7 Nov 2006 14:47:11 +0000 (+0000) Subject: New module 'memory-ostream': Output stream that accumulates the output in X-Git-Tag: v0.17~667 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=93f7cc9ad501132a4d604861a1eafb95c6e0377c;p=thirdparty%2Fgettext.git New module 'memory-ostream': Output stream that accumulates the output in memory. --- diff --git a/gnulib-local/lib/memory-ostream.oo.c b/gnulib-local/lib/memory-ostream.oo.c new file mode 100644 index 000000000..d9a6c0edc --- /dev/null +++ b/gnulib-local/lib/memory-ostream.oo.c @@ -0,0 +1,103 @@ +/* Output stream that accumulates the output in memory. + Copyright (C) 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2006. + + 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 2, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include + +/* Specification. */ +#include "memory-ostream.h" + +#include +#include + +#include "error.h" +#include "exit.h" +#include "xalloc.h" +#include "xsize.h" +#include "gettext.h" + +#define _(str) gettext (str) + +struct memory_ostream : struct ostream +{ +fields: + char *buffer; /* Buffer containing the accumulated output. */ + size_t buflen; /* Number of bytes stored so far. */ + size_t allocated; /* Allocated size of the buffer. */ +}; + +/* Implementation of ostream_t methods. */ + +static void +memory_ostream::write_mem (memory_ostream_t stream, + const void *data, size_t len) +{ + if (len > 0) + { + if (len > stream->allocated - stream->buflen) + { + size_t new_allocated = + xmax (xsum (stream->buflen, len), + xsum (stream->allocated, stream->allocated)); + if (size_overflow_p (new_allocated)) + error (EXIT_FAILURE, 0, + _("%s: too much output, buffer size overflow"), + "memory_ostream"); + stream->buffer = (char *) xrealloc (stream->buffer, new_allocated); + stream->allocated = new_allocated; + } + memcpy (stream->buffer + stream->buflen, data, len); + stream->buflen += len; + } +} + +static void +memory_ostream::flush (memory_ostream_t stream) +{ +} + +static void +memory_ostream::free (memory_ostream_t stream) +{ + free (stream->buffer); + free (stream); +} + +/* Implementation of memory_ostream_t methods. */ + +void +memory_ostream::contents (memory_ostream_t stream, + const void **bufp, size_t *buflenp) +{ + *bufp = stream->buffer; + *buflenp = stream->buflen; +} + +/* Constructor. */ + +memory_ostream_t +memory_ostream_create (void) +{ + memory_ostream_t stream = XMALLOC (struct memory_ostream_representation); + + stream->base.vtable = &memory_ostream_vtable; + stream->allocated = 250; + stream->buffer = XNMALLOC (stream->allocated, char); + stream->buflen = 0; + + return stream; +} diff --git a/gnulib-local/lib/memory-ostream.oo.h b/gnulib-local/lib/memory-ostream.oo.h new file mode 100644 index 000000000..51cad2983 --- /dev/null +++ b/gnulib-local/lib/memory-ostream.oo.h @@ -0,0 +1,49 @@ +/* Output stream that accumulates the output in memory. + Copyright (C) 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2006. + + 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 2, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#ifndef _MEMORY_OSTREAM_H +#define _MEMORY_OSTREAM_H + +#include + +#include "ostream.h" + +struct memory_ostream : struct ostream +{ +methods: + /* Return a pointer to the output accumulated so far and its size: + Store them in *BUFP and *BUFLENP. + Note: These two return values become invalid when more output is done to + the stream. */ + void contents (memory_ostream_t stream, const void **bufp, size_t *buflenp); +}; + +#ifdef __cplusplus +extern "C" { +#endif + + +/* Create an output stream that accumulates the output in a memory buffer. */ +extern memory_ostream_t memory_ostream_create (void); + + +#ifdef __cplusplus +} +#endif + +#endif /* _MEMORY_OSTREAM_H */ diff --git a/gnulib-local/modules/memory-ostream b/gnulib-local/modules/memory-ostream new file mode 100644 index 000000000..f3cd514c8 --- /dev/null +++ b/gnulib-local/modules/memory-ostream @@ -0,0 +1,33 @@ +Description: +Output stream that accumulates the output in memory. + +Files: +lib/memory-ostream.oo.h +lib/memory-ostream.oo.c + +Depends-on: +ostream +error +exit +gettext +xalloc +xsize + +configure.ac: + +Makefile.am: +lib_SOURCES += memory-ostream.c +memory-ostream.h memory-ostream.c : $(top_srcdir)/build-aux/moopp memory-ostream.oo.h memory-ostream.oo.c ostream.oo.h + $(top_srcdir)/build-aux/moopp $(srcdir)/memory-ostream.oo.c $(srcdir)/memory-ostream.oo.h $(srcdir)/ostream.oo.h +BUILT_SOURCES += memory-ostream.h memory-ostream.c memory_ostream.priv.h memory_ostream.vt.h +CLEANFILES += memory-ostream.h memory-ostream.c memory_ostream.priv.h memory_ostream.vt.h + +Include: +"memory-ostream.h" + +License: +GPL + +Maintainer: +Bruno Haible +