summaryrefslogtreecommitdiffstats
path: root/lib/libforms/objects.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libforms/objects.c')
-rw-r--r--lib/libforms/objects.c373
1 files changed, 373 insertions, 0 deletions
diff --git a/lib/libforms/objects.c b/lib/libforms/objects.c
new file mode 100644
index 0000000..0a51cae
--- /dev/null
+++ b/lib/libforms/objects.c
@@ -0,0 +1,373 @@
+/*-
+ * Copyright (c) 1995
+ * Paul Richards. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer,
+ * verbatim and that no modifications are made prior to this
+ * point in the file.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Paul Richards.
+ * 4. The name Paul Richards may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <strhash.h>
+#include <ctype.h>
+#include <err.h>
+#include <ncurses.h>
+#include <forms.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "internal.h"
+
+extern hash_table *global_bindings;
+
+extern int lineno;
+
+int done=0;
+
+__inline void
+inherit_parent(OBJECT *obj, OBJECT *parent)
+{
+ obj->parent = parent;
+ obj->status = parent->status;
+ if (!obj->y)
+ obj->y = parent->y;
+ if (!obj->x)
+ obj->x = parent->x;
+ if (!obj->height)
+ obj->height = parent->height;
+ if (!obj->width)
+ obj->width = parent->width;
+ if (!obj->attributes && parent->attributes)
+ obj->attributes = strdup(parent->attributes);
+ if (!obj->highlight && parent->highlight)
+ obj->highlight = strdup(parent->highlight);
+ if (!obj->lnext && parent->lnext)
+ obj->lnext = strdup(parent->lnext);
+ if (!obj->lup && parent->lup)
+ obj->lup = strdup(parent->lup);
+ if (!obj->ldown && parent->ldown)
+ obj->ldown = strdup(parent->ldown);
+ if (!obj->lleft && parent->lleft)
+ obj->lleft = strdup(parent->lleft);
+ if (!obj->lright && parent->lright)
+ obj->lright = strdup(parent->lright);
+ obj->display = parent->display;
+ obj->window = parent->window;
+}
+
+/*
+ * Inherit any unspecified properties from the parent. Not
+ * all properties get passed down to children.
+ */
+
+int
+inherit_props(char *key, void *data, void *arg)
+{
+ TUPLE *tuple = (TUPLE *)data;
+ OBJECT *parent = (OBJECT *)arg;
+ OBJECT *obj = (OBJECT *)tuple->addr;
+
+
+ inherit_parent(obj, parent);
+
+ if (obj->bind)
+ hash_traverse(obj->bind, &inherit_props, obj);
+
+ return (1);
+}
+
+/*
+ * Propagate unspecified properties from the parent
+ * to any attached sub-objects.
+ */
+
+void
+inherit_properties(OBJECT *obj, OBJECT *parent)
+{
+ inherit_parent(obj, parent);
+ hash_traverse(obj->bind, &inherit_props, obj);
+}
+
+__inline void
+clone_object(OBJECT *object, OBJECT *def)
+{
+ int i;
+
+ /* XXX - Should really check if strdup's succeed */
+
+ object->type = def->type;
+ object->status = def->status;
+ object->parent = def->parent;
+ /*
+ * Only copy sizes for fixed size objects,
+ * otherwise inherit from parent. Always
+ * inherit x and y.
+ */
+ if (def->type != OT_COMPOUND && def->type != OT_FUNCTION) {
+ object->height = def->height;
+ object->width = def->width;
+ }
+ if (def->attributes)
+ object->attributes = strdup(def->attributes);
+ if (def->highlight)
+ object->highlight = strdup(def->highlight);
+ if (def->lnext)
+ object->lnext = strdup(def->lnext);
+ if (def->lup)
+ object->lup = strdup(def->lup);
+ if (def->ldown)
+ object->ldown = strdup(def->ldown);
+ if (def->lleft)
+ object->lleft = strdup(def->lleft);
+ if (def->lright)
+ object->lright = strdup(def->lright);
+ if (def->UserDrawFunc)
+ object->UserDrawFunc = strdup(def->UserDrawFunc);
+ if (def->UserProcFunc)
+ object->UserProcFunc = strdup(def->UserProcFunc);
+ if (def->OnEntry)
+ object->OnEntry = strdup(def->OnEntry);
+ if (def->OnExit)
+ object->OnExit = strdup(def->OnExit);
+
+ object->display = def->display;
+ object->window = def->window;
+
+ switch (object->type) {
+ case OT_ACTION:
+ if (def->object.action) {
+ object->object.action = malloc(sizeof (ACTION_OBJECT));
+ if (!object->object.action)
+ errx(-1,
+ "Failed to allocate memory for copy of action object");
+ if (def->object.action->text)
+ object->object.action->text =
+ strdup(def->object.action->text);
+ if (def->object.action->action)
+ object->object.action->action =
+ strdup(def->object.action->action);
+ }
+ break;
+ case OT_COMPOUND:
+ if (def->object.compound) {
+ object->object.compound = malloc(sizeof (COMPOUND_OBJECT));
+ if (!object->object.compound)
+ errx(-1,
+ "Failed to allocate memory for copy of compound object");
+ if (def->object.compound->defobj)
+ object->object.compound->defobj =
+ strdup(def->object.compound->defobj);
+ }
+ break;
+ case OT_FUNCTION:
+ object->object.function = malloc(sizeof (FUNCTION_OBJECT));
+ if (!object->object.function)
+ errx(-1, "Failed to allocate memory for copy of function object");
+ object->object.function->fn = strdup(def->object.function->fn);
+ break;
+ case OT_INPUT:
+ object->object.input = malloc(sizeof (INPUT_OBJECT));
+ if (!object->object.input)
+ errx(-1, "Failed to allocate memory for copy of input object");
+ object->object.input->lbl_flag = def->object.input->lbl_flag;
+ object->object.input->label = strdup(def->object.input->label);
+ object->object.input->input = strdup(def->object.input->input);
+ object->object.input->limit = def->object.input->limit;
+ break;
+ case OT_MENU:
+ object->object.menu = malloc(sizeof (MENU_OBJECT));
+ if (!object->object.menu)
+ errx(-1, "Failed to allocate memory for copy of menu object");
+ object->object.menu->selected = def->object.menu->selected;
+ for (i=0; i < def->object.menu->no_options; i++) {
+ object->object.menu->no_options =
+ add_menu_option(object->object.menu,
+ def->object.menu->options[i]);
+ if (!object->object.menu->no_options)
+ errx(-1, "Failed to allocate memory for copy of menu option");
+ }
+ break;
+ case OT_TEXT:
+ object->object.text = malloc(sizeof (TEXT_OBJECT));
+ if (!object->object.text)
+ errx(-1, "Failed to allocate memory for copy of text object");
+ object->object.text->text = strdup(def->object.text->text);
+ break;
+ default:
+ break;
+ }
+}
+
+/*
+ * Recursively clone objects in the bindings table.
+ */
+
+int
+copy_bound_objects(char *key, void *data, void *arg)
+{
+ TUPLE *tuple = (TUPLE *)data;
+ OBJECT *object = (OBJECT *)arg;
+ OBJECT *clone, *src;
+
+ if (tuple->type != TT_OBJ_DEF && tuple->type != TT_OBJ_INST)
+ errx(-1, "Invalid tuple type in definition");
+
+ src = (OBJECT *)tuple->addr;
+
+
+ clone = malloc(sizeof (OBJECT));
+ if (!clone)
+ errx(-1, "Failed to allocate memory for clone object");
+ clone->bind = hash_create(0);
+ if (!clone->bind)
+ errx(-1, "Failed to create hash table for definition copy");
+
+ clone_object(clone, src);
+ bind_tuple(object->bind, key, tuple->type, (FUNCP)clone);
+
+ if (src->bind)
+ hash_traverse(src->bind, &copy_bound_objects, clone);
+ return (1);
+}
+
+int
+use_defined_object(OBJECT *object, char *src)
+{
+ TUPLE *tuple;
+ OBJECT *def;
+
+ tuple = tuple_search(object, src, TT_OBJ_DEF);
+ if (!tuple)
+ return (ST_NOBIND);
+ else
+ def = (OBJECT *)tuple->addr;
+
+ /* Clone root object */
+ clone_object(object, def);
+
+ /* Now recursively clone sub-objects */
+ hash_traverse(def->bind, &copy_bound_objects, object);
+}
+
+
+/*
+ * Calculate length of printable part of the string,
+ * stripping out the attribute modifiers.
+ */
+
+int
+calc_string_width(char *string)
+{
+ int len, width=0;
+
+ if (!string)
+ return (0);
+
+ len = strlen(string);
+
+ while (len) {
+ if (*string != '\\') {
+ width++;
+ len--;
+ string++;
+ continue;
+ } else {
+ string++;
+ len--;
+ if (*string == '\\') {
+ string++;
+ width++;
+ len--;
+ continue;
+ } else {
+ while (!isspace(*string)) {
+ string++;
+ len--;
+ }
+ while (isspace(*string)) {
+ string ++;
+ len--;
+ }
+ }
+ }
+ }
+
+ return (width);
+}
+
+/* Calculate a default height for a object */
+
+void
+calc_object_height(OBJECT *object, char *string)
+{
+
+ int len;
+
+ len = calc_string_width(string);
+
+ if (!object->width) {
+ /*
+ * This is a failsafe, this routine shouldn't be called
+ * with a width of 0, the width should be determined
+ * first.
+ */
+ object->height = 1;
+ return;
+ }
+
+ if (len < object->width) {
+ object->height = 1;
+ return;
+ } else
+ object->height = len / object->width;
+
+ if ((object->height*object->width) < len)
+ object->height++;
+
+ return;
+}
+
+int
+add_menu_option(MENU_OBJECT *menu, char *option)
+{
+ char **tmp;
+ int len;
+
+ tmp = (char **)realloc(menu->options, (menu->no_options + 1) * sizeof(char**));
+ if (!tmp)
+ return (0);
+ else
+ menu->options = tmp;
+
+ len = strlen(option) + 1;
+ menu->options[menu->no_options] = (char *)malloc(len);
+ if (!menu->options[menu->no_options])
+ return (0);
+ strncpy(menu->options[menu->no_options], option, len);
+
+ return (++menu->no_options);
+}
OpenPOWER on IntegriCloud