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Diffstat (limited to 'sanei/sanei_save_values.c')
| -rw-r--r-- | sanei/sanei_save_values.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/sanei/sanei_save_values.c b/sanei/sanei_save_values.c new file mode 100644 index 0000000..195947c --- /dev/null +++ b/sanei/sanei_save_values.c @@ -0,0 +1,169 @@ +/* sane - Scanner Access Now Easy. + Copyright (C) 1997 David Mosberger-Tang + This file is part of the SANE package. + + 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 of the + License, 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., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA. + + As a special exception, the authors of SANE give permission for + additional uses of the libraries contained in this release of SANE. + + The exception is that, if you link a SANE library with other files + to produce an executable, this does not by itself cause the + resulting executable to be covered by the GNU General Public + License. Your use of that executable is in no way restricted on + account of linking the SANE library code into it. + + This exception does not, however, invalidate any other reasons why + the executable file might be covered by the GNU General Public + License. + + If you submit changes to SANE to the maintainers to be included in + a subsequent release, you agree by submitting the changes that + those changes may be distributed with this exception intact. + + If you write modifications of your own for SANE, it is your choice + whether to permit this exception to apply to your modifications. + If you do not wish that, delete this exception notice. */ + +#ifdef __TANDEM +#include <floss.h> +#endif + +#include "sane/config.h" + +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#ifdef HAVE_LIBC_H +# include <libc.h> /* NeXTStep/OpenStep */ +#endif + +#include <sane/sane.h> +#include "../include/sane/sanei_wire.h" +#include "../include/sane/sanei_codec_ascii.h" + +int +sanei_save_values (int fd, SANE_Handle device) +{ + const SANE_Option_Descriptor *opt; + size_t word_array_size = 0; + SANE_Word *word_array = 0; + size_t str_size = 0; + SANE_String str = 0; + SANE_Word word; + Wire w; + int i; + + w.io.fd = fd; +#ifdef __TANDEM + w.io.read = floss_read; + w.io.write = floss_write; +#else + w.io.read = read; + w.io.write = write; +#endif + sanei_w_init (&w, sanei_codec_ascii_init); + sanei_w_set_dir (&w, WIRE_ENCODE); + + for (i = 0; (opt = sane_get_option_descriptor (device, i)); ++i) + { + if ((opt->cap & (SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT)) + != (SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT) + || !opt->name) + /* if we can't query AND set the option, don't bother saving it */ + continue; + + switch (opt->type) + { + case SANE_TYPE_BOOL: + case SANE_TYPE_INT: + case SANE_TYPE_FIXED: + if (opt->size == sizeof (SANE_Word)) + { + if (sane_control_option (device, i, SANE_ACTION_GET_VALUE, + &word, 0) + != SANE_STATUS_GOOD) + continue; + sanei_w_string (&w, (SANE_String *) &opt->name); + sanei_w_word (&w, &word); + } + else + { + SANE_Int len = opt->size / sizeof (SANE_Word); + + if (opt->size > word_array_size) + { + word_array_size = + ((opt->size + 32*sizeof (SANE_Word)) + & ~(32*sizeof (SANE_Word) - 1)); + if (word_array) + word_array = realloc (word_array, word_array_size); + else + word_array = malloc (word_array_size); + + if (word_array == 0) + { + /* Malloc failed, so return an error. */ + w.status = ENOMEM; + return 1; + } + } + if (sane_control_option (device, i, SANE_ACTION_GET_VALUE, + word_array, 0) + != SANE_STATUS_GOOD) + continue; + sanei_w_string (&w, (SANE_String *) &opt->name); + sanei_w_array (&w, &len, (void **) &word_array, + (WireCodecFunc) sanei_w_word, sizeof (SANE_Word)); + } + break; + + case SANE_TYPE_STRING: + if (opt->size > str_size) + { + str_size = (opt->size + 1024) & ~1023; + if (str) + str = realloc (str, str_size); + else + str = malloc (str_size); + + if (str == 0) + { + /* Malloc failed, so return an error. */ + w.status = ENOMEM; + return 1; + } + } + if (sane_control_option (device, i, SANE_ACTION_GET_VALUE, str, 0) + != SANE_STATUS_GOOD) + continue; + sanei_w_string (&w, (SANE_String *) &opt->name); + sanei_w_string (&w, &str); + break; + + case SANE_TYPE_BUTTON: + case SANE_TYPE_GROUP: + break; + } + } + sanei_w_set_dir (&w, WIRE_DECODE); + + if (word_array) + free (word_array); + if (str) + free (str); + return 0; +} |