-/* Copyright (C) 1995,1996,1998,2000,2001 Free Software Foundation
+/* Copyright (C) 1995,1996,1998,2000,2001, 2006, 2008, 2009, 2010 Free Software Foundation
*
- * 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 software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE 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 GUILE 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.
+ * This library 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 3 of
+ * the License, or (at your option) any later version.
*
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
+ * This library 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.
*
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice.
- *
- * The author can be reached at djurfeldt@nada.kth.se
- * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
\f
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
#include "libguile/_scm.h"
#include "libguile/mallocs.h"
static SCM protected_objects = SCM_EOL;
-
-/* Return a list of the current option setting. The format of an option
- * setting is described in the above documentation. */
+/* Return a list of the current option setting. The format of an
+ * option setting is described in the above documentation. */
static SCM
-get_option_setting (const scm_t_option options[], unsigned int n)
+get_option_setting (const scm_t_option options[])
{
unsigned int i;
SCM ls = SCM_EOL;
- for (i = 0; i != n; ++i)
+ for (i = 0; options[i].name; ++i)
{
switch (options[i].type)
{
ls = scm_cons (SCM_PACK (options[i].name), ls);
break;
case SCM_OPTION_INTEGER:
- ls = scm_cons (SCM_MAKINUM (options[i].val), ls);
+ ls = scm_cons (scm_from_unsigned_integer (options[i].val), ls);
ls = scm_cons (SCM_PACK (options[i].name), ls);
break;
case SCM_OPTION_SCM:
/* Return a list of sublists, where each sublist contains option name, value
* and documentation string. */
static SCM
-get_documented_option_setting (const scm_t_option options[], unsigned int n)
+get_documented_option_setting (const scm_t_option options[])
{
SCM ans = SCM_EOL;
unsigned int i;
- for (i = 0; i != n; ++i)
+ for (i = 0; options[i].name; ++i)
{
- SCM ls = scm_cons (scm_str2string (options[i].doc), SCM_EOL);
+ SCM ls = scm_cons (scm_from_locale_string (options[i].doc), SCM_EOL);
switch (options[i].type)
{
case SCM_OPTION_BOOLEAN:
ls = scm_cons (options[i].val ? scm_yes_sym : scm_no_sym, ls);
break;
case SCM_OPTION_INTEGER:
- ls = scm_cons (SCM_MAKINUM (options[i].val), ls);
+ ls = scm_cons (scm_from_unsigned_integer (options[i].val), ls);
break;
case SCM_OPTION_SCM:
ls = scm_cons (SCM_PACK (options[i].val), ls);
ls = scm_cons (SCM_PACK (options[i].name), ls);
ans = scm_cons (ls, ans);
}
- return ans;
+ return scm_reverse_x (ans, SCM_UNDEFINED);
}
+static int
+options_length (scm_t_option options[])
+{
+ unsigned int i = 0;
+ for (; options[i].name != NULL; ++i)
+ ;
+
+ return i;
+}
+
/* Alters options according to the given option setting 'args'. The value of
* args is known to be a list, but it is not known whether the list is a well
* formed option setting, i. e. if for every non-boolean option a value is
* given. For this reason, the function applies all changes to a copy of the
* original setting in memory. Only if 'args' was successfully processed,
- * the new setting will overwrite the old one. */
+ * the new setting will overwrite the old one.
+ *
+ * If DRY_RUN is set, don't change anything. This is useful for trying out an option
+ * before entering a critical section.
+ */
static void
-change_option_setting (SCM args, scm_t_option options[], unsigned int n, const char *s)
+change_option_setting (SCM args, scm_t_option options[], const char *s,
+ int dry_run)
{
unsigned int i;
SCM locally_protected_args = args;
- SCM malloc_obj = scm_malloc_obj (n * sizeof (scm_t_bits));
+ SCM malloc_obj = scm_malloc_obj (options_length (options) * sizeof (scm_t_bits));
scm_t_bits *flags = (scm_t_bits *) SCM_MALLOCDATA (malloc_obj);
- for (i = 0; i != n; ++i)
+ for (i = 0; options[i].name; ++i)
{
if (options[i].type == SCM_OPTION_BOOLEAN)
flags[i] = 0;
flags[i] = options[i].val;
}
- while (!SCM_NULLP (args))
+ while (!SCM_NULL_OR_NIL_P (args))
{
SCM name = SCM_CAR (args);
int found = 0;
- for (i = 0; i != n && !found; ++i)
+ for (i = 0; options[i].name && !found; ++i)
{
- if (SCM_EQ_P (name, SCM_PACK (options[i].name)))
+ if (scm_is_eq (name, SCM_PACK (options[i].name)))
{
switch (options[i].type)
{
break;
case SCM_OPTION_INTEGER:
args = SCM_CDR (args);
- SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG1, s);
- SCM_ASSERT (SCM_INUMP (SCM_CAR (args)), args, SCM_ARG1, s);
- flags[i] = SCM_INUM (SCM_CAR (args));
+ flags[i] = scm_to_size_t (scm_car (args));
break;
case SCM_OPTION_SCM:
args = SCM_CDR (args);
- SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG1, s);
- flags[i] = SCM_UNPACK (SCM_CAR (args));
+ flags[i] = SCM_UNPACK (scm_car (args));
break;
}
found = 1;
args = SCM_CDR (args);
}
- for (i = 0; i != n; ++i)
+ if (dry_run)
+ return;
+
+ for (i = 0; options[i].name; ++i)
{
if (options[i].type == SCM_OPTION_SCM)
{
SCM
-scm_options (SCM args, scm_t_option options[], unsigned int n, const char *s)
+scm_options (SCM args, scm_t_option options[], const char *s)
+{
+ return scm_options_try (args, options, s, 0);
+}
+
+SCM
+scm_options_try (SCM args, scm_t_option options[], const char *s,
+ int dry_run)
{
if (SCM_UNBNDP (args))
- return get_option_setting (options, n);
- else if (!SCM_NULLP (args) && !SCM_CONSP (args))
+ return get_option_setting (options);
+ else if (!SCM_NULL_OR_NIL_P (args) && !scm_is_pair (args))
/* Dirk:FIXME:: This criterion should be improved. IMO it is better to
* demand that args is #t if documentation should be shown than to say
* that every argument except a list will print out documentation. */
- return get_documented_option_setting (options, n);
+ return get_documented_option_setting (options);
else
{
SCM old_setting;
- SCM_ASSERT (!SCM_FALSEP (scm_list_p (args)), args, 1, s);
- old_setting = get_option_setting (options, n);
- change_option_setting (args, options, n, s);
+ SCM_ASSERT (scm_is_true (scm_list_p (args)), args, 1, s);
+ old_setting = get_option_setting (options);
+ change_option_setting (args, options, s, dry_run);
return old_setting;
}
}
void
-scm_init_opts (SCM (*func) (SCM), scm_t_option options[], unsigned int n)
+scm_init_opts (SCM (*func) (SCM), scm_t_option options[])
{
unsigned int i;
- for (i = 0; i != n; ++i)
+ for (i = 0; options[i].name; ++i)
{
- SCM name = scm_str2symbol (options[i].name);
+ SCM name = scm_from_locale_symbol (options[i].name);
options[i].name = (char *) SCM_UNPACK (name);
- scm_permanent_object (name);
}
func (SCM_UNDEFINED);
}
{
scm_gc_register_root (&protected_objects);
-#ifndef SCM_MAGIC_SNARFER
#include "libguile/options.x"
-#endif
}
/*
HCoop / bpt / guile.git / blobdiff