diff options
Diffstat (limited to 'libtdenetwork/libgpgme-copy/gpgme/data-stream.c')
-rw-r--r-- | libtdenetwork/libgpgme-copy/gpgme/data-stream.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/libtdenetwork/libgpgme-copy/gpgme/data-stream.c b/libtdenetwork/libgpgme-copy/gpgme/data-stream.c new file mode 100644 index 00000000..eb8768d3 --- /dev/null +++ b/libtdenetwork/libgpgme-copy/gpgme/data-stream.c @@ -0,0 +1,101 @@ +/* data-stream.c - A stream based data object. + Copyright (C) 2002, 2004 g10 Code GmbH + + This file is part of GPGME. + + GPGME is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + GPGME 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser 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. */ + +#if HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <sys/types.h> + +#include "data.h" + + +static ssize_t +stream_read (gpgme_data_t dh, void *buffer, size_t size) +{ + size_t amt = fread (buffer, 1, size, dh->data.stream); + if (amt > 0) + return amt; + return ferror (dh->data.stream) ? -1 : 0; +} + + +static ssize_t +stream_write (gpgme_data_t dh, const void *buffer, size_t size) +{ + size_t amt = fwrite (buffer, 1, size, dh->data.stream); + if (amt > 0) + return amt; + return ferror (dh->data.stream) ? -1 : 0; +} + + +static off_t +stream_seek (gpgme_data_t dh, off_t offset, int whence) +{ + int err; + +#ifdef HAVE_FSEEKO + err = fseeko (dh->data.stream, offset, whence); +#else + /* FIXME: Check for overflow, or at least bail at compilation. */ + err = fseek (dh->data.stream, offset, whence); +#endif + + if (err) + return -1; + +#ifdef HAVE_FSEEKO + return ftello (dh->data.stream); +#else + return ftell (dh->data.stream); +#endif +} + + +static int +stream_get_fd (gpgme_data_t dh) +{ + fflush (dh->data.stream); + return fileno (dh->data.stream); +} + + +static struct _gpgme_data_cbs stream_cbs = + { + stream_read, + stream_write, + stream_seek, + NULL, + stream_get_fd + }; + + +gpgme_error_t +gpgme_data_new_from_stream (gpgme_data_t *dh, FILE *stream) +{ + gpgme_error_t err = _gpgme_data_new (dh, &stream_cbs); + if (err) + return err; + + (*dh)->data.stream = stream; + return 0; +} |