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Diffstat (limited to 'Build/source/utils/dialog/dialog-1.1-20110707/guage.c')
-rw-r--r--Build/source/utils/dialog/dialog-1.1-20110707/guage.c399
1 files changed, 399 insertions, 0 deletions
diff --git a/Build/source/utils/dialog/dialog-1.1-20110707/guage.c b/Build/source/utils/dialog/dialog-1.1-20110707/guage.c
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index 00000000000..b25052f2322
--- /dev/null
+++ b/Build/source/utils/dialog/dialog-1.1-20110707/guage.c
@@ -0,0 +1,399 @@
+/*
+ * $Id: guage.c,v 1.60 2011/06/27 00:52:28 tom Exp $
+ *
+ * guage.c -- implements the gauge dialog
+ *
+ * Copyright 2000-2010,2011 Thomas E. Dickey
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License, version 2.1
+ * as published by the Free Software Foundation.
+ *
+ * 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
+ * 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
+ * Free Software Foundation, Inc.
+ * 51 Franklin St., Fifth Floor
+ * Boston, MA 02110, USA.
+ *
+ * An earlier version of this program lists as authors
+ * Marc Ewing, Red Hat Software
+ */
+
+#include <dialog.h>
+
+#include <errno.h>
+
+#define MY_LEN (MAX_LEN)/2
+
+#define MIN_HIGH (4)
+#define MIN_WIDE (10 + 2 * (2 + MARGIN))
+
+#define isMarker(buf) !strncmp(buf, "XXX", (size_t) 3)
+
+typedef struct _my_obj {
+ DIALOG_CALLBACK obj; /* has to be first in struct */
+ struct _my_obj *next;
+ WINDOW *text;
+ const char *title;
+ char *prompt;
+ char prompt_buf[MY_LEN];
+ int percent;
+ int height;
+ int width;
+ char line[MAX_LEN + 1];
+} MY_OBJ;
+
+static MY_OBJ *all_objects;
+
+static int
+valid(MY_OBJ * obj)
+{
+ MY_OBJ *list = all_objects;
+ int result = 0;
+
+ while (list != 0) {
+ if (list == obj) {
+ result = 1;
+ break;
+ }
+ list = list->next;
+ }
+ return result;
+}
+
+static void
+delink(MY_OBJ * obj)
+{
+ MY_OBJ *p = all_objects;
+ MY_OBJ *q = 0;
+ while (p != 0) {
+ if (p == obj) {
+ if (q != 0) {
+ q->next = p->next;
+ } else {
+ all_objects = p->next;
+ }
+ break;
+ }
+ q = p;
+ p = p->next;
+ }
+}
+
+static int
+read_data(char *buffer, FILE *fp)
+{
+ int result;
+
+ if (feof(fp)) {
+ result = 0;
+ } else if (fgets(buffer, MY_LEN, fp) != 0) {
+ DLG_TRACE(("read_data:%s", buffer));
+ dlg_trim_string(buffer);
+ result = 1;
+ } else {
+ result = -1;
+ }
+ return result;
+}
+
+static int
+decode_percent(char *buffer)
+{
+ char *tmp = 0;
+ long value = strtol(buffer, &tmp, 10);
+
+ if (tmp != 0 && (*tmp == 0 || isspace(UCH(*tmp))) && value >= 0) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static void
+repaint_text(MY_OBJ * obj)
+{
+ WINDOW *dialog = obj->obj.win;
+ int i, x;
+
+ if (dialog != 0 && obj->obj.input != 0) {
+ (void) werase(dialog);
+ dlg_draw_box(dialog, 0, 0, obj->height, obj->width, dialog_attr, border_attr);
+
+ dlg_draw_title(dialog, obj->title);
+
+ wattrset(dialog, dialog_attr);
+ dlg_draw_helpline(dialog, FALSE);
+ dlg_print_autowrap(dialog, obj->prompt, obj->height, obj->width);
+
+ dlg_draw_box(dialog,
+ obj->height - 4, 2 + MARGIN,
+ 2 + MARGIN, obj->width - 2 * (2 + MARGIN),
+ dialog_attr,
+ border_attr);
+
+ /*
+ * Clear the area for the progress bar by filling it with spaces
+ * in the title-attribute, and write the percentage with that
+ * attribute.
+ */
+ (void) wmove(dialog, obj->height - 3, 4);
+ wattrset(dialog, gauge_attr);
+
+ for (i = 0; i < (obj->width - 2 * (3 + MARGIN)); i++)
+ (void) waddch(dialog, ' ');
+
+ (void) wmove(dialog, obj->height - 3, (obj->width / 2) - 2);
+ (void) wprintw(dialog, "%3d%%", obj->percent);
+
+ /*
+ * Now draw a bar in reverse, relative to the background.
+ * The window attribute was useful for painting the background,
+ * but requires some tweaks to reverse it.
+ */
+ x = (obj->percent * (obj->width - 2 * (3 + MARGIN))) / 100;
+ if ((title_attr & A_REVERSE) != 0) {
+ wattroff(dialog, A_REVERSE);
+ } else {
+ wattrset(dialog, A_REVERSE);
+ }
+ (void) wmove(dialog, obj->height - 3, 4);
+ for (i = 0; i < x; i++) {
+ chtype ch2 = winch(dialog);
+ if (title_attr & A_REVERSE) {
+ ch2 &= ~A_REVERSE;
+ }
+ (void) waddch(dialog, ch2);
+ }
+
+ (void) wrefresh(dialog);
+ }
+}
+
+static bool
+handle_input(DIALOG_CALLBACK * cb)
+{
+ MY_OBJ *obj = (MY_OBJ *) cb;
+ bool result;
+ int status;
+ char buf[MY_LEN];
+
+ if (dialog_state.pipe_input == 0) {
+ status = -1;
+ } else if ((status = read_data(buf, dialog_state.pipe_input)) > 0) {
+
+ if (isMarker(buf)) {
+ /*
+ * Historically, next line should be percentage, but one of the
+ * worse-written clones of 'dialog' assumes the number is missing.
+ * (Gresham's Law applied to software).
+ */
+ if ((status = read_data(buf, dialog_state.pipe_input)) > 0) {
+
+ obj->prompt_buf[0] = '\0';
+ if (decode_percent(buf))
+ obj->percent = atoi(buf);
+ else
+ strcpy(obj->prompt_buf, buf);
+
+ /* Rest is message text */
+ while ((status = read_data(buf, dialog_state.pipe_input)) > 0
+ && !isMarker(buf)) {
+ if (strlen(obj->prompt_buf) + strlen(buf) <
+ sizeof(obj->prompt_buf) - 1) {
+ strcat(obj->prompt_buf, buf);
+ }
+ }
+
+ if (obj->prompt != obj->prompt_buf)
+ free(obj->prompt);
+ obj->prompt = obj->prompt_buf;
+ }
+ } else if (decode_percent(buf)) {
+ obj->percent = atoi(buf);
+ }
+ } else {
+ if (feof(dialog_state.pipe_input) ||
+ (ferror(dialog_state.pipe_input) && errno != EINTR)) {
+ delink(obj);
+ dlg_remove_callback(cb);
+ }
+ }
+
+ if (status > 0) {
+ result = TRUE;
+ repaint_text(obj);
+ } else {
+ result = FALSE;
+ }
+
+ return result;
+}
+
+static bool
+handle_my_getc(DIALOG_CALLBACK * cb, int ch, int fkey, int *result)
+{
+ int status = TRUE;
+
+ *result = DLG_EXIT_OK;
+ if (cb != 0) {
+ if (!fkey && (ch == ERR)) {
+ (void) handle_input(cb);
+ /* cb might be freed in handle_input */
+ status = (valid((MY_OBJ *) cb) && (cb->input != 0));
+ }
+ } else {
+ status = FALSE;
+ }
+ return status;
+}
+
+static void
+my_cleanup(DIALOG_CALLBACK * cb)
+{
+ MY_OBJ *obj = (MY_OBJ *) cb;
+
+ if (valid(obj)) {
+ if (obj->prompt != obj->prompt_buf) {
+ free(obj->prompt);
+ obj->prompt = obj->prompt_buf;
+ }
+ delink(obj);
+ }
+}
+
+void
+dlg_update_gauge(void *objptr, int percent)
+{
+ MY_OBJ *obj = (MY_OBJ *) objptr;
+
+ curs_set(0);
+ obj->percent = percent;
+ repaint_text(obj);
+}
+
+/*
+ * Allocates a new object and fills it as per the arguments
+ */
+void *
+dlg_allocate_gauge(const char *title,
+ const char *cprompt,
+ int height,
+ int width,
+ int percent)
+{
+ int x, y;
+ char *prompt = dlg_strclone(cprompt);
+ WINDOW *dialog;
+ MY_OBJ *obj = 0;
+
+ dlg_tab_correct_str(prompt);
+
+ dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE);
+ dlg_print_size(height, width);
+ dlg_ctl_size(height, width);
+
+ /* center dialog box on screen */
+ x = dlg_box_x_ordinate(width);
+ y = dlg_box_y_ordinate(height);
+
+ dialog = dlg_new_window(height, width, y, x);
+
+ obj = dlg_calloc(MY_OBJ, 1);
+ assert_ptr(obj, "dialog_gauge");
+
+ obj->obj.input = dialog_state.pipe_input;
+ obj->obj.win = dialog;
+ obj->obj.keep_win = TRUE;
+ obj->obj.bg_task = TRUE;
+ obj->obj.handle_getc = handle_my_getc;
+ obj->obj.handle_input = handle_input;
+
+ obj->title = title;
+ obj->prompt = prompt;
+ obj->percent = percent;
+ obj->height = height;
+ obj->width = width;
+
+ obj->next = all_objects;
+ all_objects = obj;
+
+ return (void *) obj;
+}
+
+void
+dlg_free_gauge(void *objptr)
+{
+ MY_OBJ *obj = (MY_OBJ *) objptr;
+
+ curs_set(1);
+ if (valid(obj)) {
+ delink(obj);
+ obj->obj.keep_win = FALSE;
+ dlg_remove_callback(&(obj->obj));
+ free(obj);
+ }
+}
+
+/*
+ * Display a gauge, or progress meter. Starts at percent% and reads stdin. If
+ * stdin is not XXX, then it is interpreted as a percentage, and the display is
+ * updated accordingly. Otherwise the next line is the percentage, and
+ * subsequent lines up to another XXX are used for the new prompt. Note that
+ * the size of the window never changes, so the prompt can not get any larger
+ * than the height and width specified.
+ */
+int
+dialog_gauge(const char *title,
+ const char *cprompt,
+ int height,
+ int width,
+ int percent)
+{
+ int fkey;
+ int ch, result;
+ void *objptr = dlg_allocate_gauge(title, cprompt, height, width, percent);
+ MY_OBJ *obj = (MY_OBJ *) objptr;
+
+ dlg_add_callback_ref((DIALOG_CALLBACK **) & obj, my_cleanup);
+ dlg_update_gauge(obj, percent);
+
+ do {
+ ch = dlg_getc(obj->obj.win, &fkey);
+#ifdef KEY_RESIZE
+ if (fkey && ch == KEY_RESIZE) {
+ MY_OBJ *oldobj = obj;
+
+ dlg_mouse_free_regions();
+
+ obj = dlg_allocate_gauge(title,
+ cprompt,
+ height,
+ width,
+ oldobj->percent);
+
+ /* avoid breaking new window in dlg_remove_callback */
+ oldobj->obj.caller = 0;
+ oldobj->obj.input = 0;
+ oldobj->obj.keep_win = FALSE;
+
+ /* remove the old version of the gauge */
+ dlg_clear();
+ dlg_remove_callback(&(oldobj->obj));
+ refresh();
+
+ dlg_add_callback_ref((DIALOG_CALLBACK **) & obj, my_cleanup);
+ dlg_update_gauge(obj, obj->percent);
+ }
+#endif
+ }
+ while (valid(obj) && handle_my_getc(&(obj->obj), ch, fkey, &result));
+
+ dlg_free_gauge(obj);
+
+ return (DLG_EXIT_OK);
+}
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