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Diffstat (limited to 'gnu/lib/libodialog/kernel.c')
| -rw-r--r-- | gnu/lib/libodialog/kernel.c | 536 |
1 files changed, 536 insertions, 0 deletions
diff --git a/gnu/lib/libodialog/kernel.c b/gnu/lib/libodialog/kernel.c new file mode 100644 index 0000000..9ed5eac --- /dev/null +++ b/gnu/lib/libodialog/kernel.c @@ -0,0 +1,536 @@ +/* + * dialog - Display simple dialog boxes from shell scripts + * + * AUTHOR: Savio Lam (lam836@cs.cuhk.hk) + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * HISTORY: + * + * 17/12/93 - Version 0.1 released. + * + * 19/12/93 - menu will now scroll if there are more items than can fit + * on the screen. + * - added 'checklist', a dialog box with a list of options that + * can be turned on or off. A list of options that are on is + * returned on exit. + * + * 20/12/93 - Version 0.15 released. + * + * 29/12/93 - Incorporated patch from Patrick J. Volkerding + * (volkerdi@mhd1.moorhead.msus.edu) that made these changes: + * - increased MAX_LEN to 2048 + * - added 'infobox', equivalent to a message box without pausing + * - added option '--clear' that will clear the screen + * - Explicit line breaking when printing prompt text can be + * invoked by real newline '\n' besides the string "\n" + * - an optional parameter '--title <string>' can be used to + * specify a title string for the dialog box + * + * 03/01/94 - added 'textbox', a dialog box for displaying text from a file. + * - Version 0.2 released. + * + * 04/01/94 - some fixes and improvements for 'textbox': + * - fixed a bug that will cause a segmentation violation when a + * line is longer than MAX_LEN characters. Lines will now be + * truncated if they are longer than MAX_LEN characters. + * - removed wrefresh() from print_line(). This will increase + * efficiency of print_page() which calls print_line(). + * - display current position in the form of percentage into file. + * - Version 0.21 released. + * + * 05/01/94 - some changes for faster screen update. + * + * 07/01/94 - much more flexible color settings. Can use all 16 colors + * (8 normal, 8 highlight) of the Linux console. + * + * 08/01/94 - added run-time configuration using configuration file. + * + * 09/01/94 - some minor bug fixes and cleanups for menubox, checklist and + * textbox. + * + * 11/01/94 - added a man page. + * + * 13/01/94 - some changes for easier porting to other Unix systems (tested + * on Ultrix, SunOS and HPUX) + * - Version 0.3 released. + * + * 08/06/94 - Patches by Stuart Herbert - S.Herbert@shef.ac.uk + * Fixed attr_clear and the textbox stuff to work with ncurses 1.8.5 + * Fixed the wordwrap routine - it'll actually wrap properly now + * Added a more 3D look to everything - having your own rc file could + * prove 'interesting' to say the least :-) + * Added radiolist option + * - Version 0.4 released. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#define __DIALOG_MAIN__ + +#include <dialog.h> +#include <err.h> +#include "dialog.priv.h" +#ifdef HAVE_NCURSES +#include "colors.h" +#endif + +/* These are two "secret" globals that can be fiddled to make a dialog + * come up someplace other than a "centered" calculation for X,Y + */ +int DialogX, DialogY; + +/* This "secret" global allows you to change the behavior of an input field */ +int DialogInputAttrs; + +/* + * Do some initialization for dialog + */ +void init_dialog(void) +{ + + if (issetugid()) { + errx(1, "libdialog is unsafe to use in setugid applications"); + } + +#if defined(LOCALE) + (void) setlocale(LC_ALL, ""); +#endif + +#ifdef HAVE_NCURSES + if (parse_rc() == -1) /* Read the configuration file */ + exit(-1); +#endif + + if (initscr() == NULL) { /* Init curses */ + fprintf(stderr, "\nCurses initialization error.\n"); + exit(-1); + } + keypad(stdscr, TRUE); + cbreak(); + noecho(); + +#ifdef HAVE_NCURSES + if (use_colors || use_shadow) /* Set up colors */ + color_setup(); +#endif + + /* Set screen to screen attribute */ + dialog_clear_norefresh(); + DialogX = DialogY = 0; +} +/* End of init_dialog() */ + + +#ifdef HAVE_NCURSES +/* + * Setup for color display + */ +void color_setup(void) +{ + int i; + + if (has_colors()) { /* Terminal supports color? */ + start_color(); + + /* Initialize color pairs */ + for (i = 0; i < ATTRIBUTE_COUNT; i++) + init_pair(i+1, color_table[i][0], color_table[i][1]); + + /* Setup color attributes */ + for (i = 0; i < ATTRIBUTE_COUNT; i++) + attributes[i] = C_ATTR(color_table[i][2], i+1); + } +} +/* End of color_setup() */ +#endif + + +/* + * Set window to attribute 'attr' + */ +void attr_clear(WINDOW *win, int height, int width, chtype attr) +{ + int i, j; + + wattrset(win, attr); /* Set window to attribute 'attr' */ + for (i = 0; i < height; i++) { + wmove(win, i, 0); + for (j = 0; j < width; j++) + waddch(win, ' '); + } +} +/* End of attr_clear() */ + + +/* + * Print a string of text in a window, automatically wrap around to the + * next line if the string is too long to fit on one line. Note that the + * string may contain "\n" to represent a newline character or the real + * newline '\n', but in that case, auto wrap around will be disabled. + */ +void print_autowrap(WINDOW *win, unsigned char *prompt, int height, int width, int maxwidth, int y, int x, int center, int rawmode) +{ + int cur_x, cur_y, i; + unsigned char tempstr[MAX_LEN+1], *word, *tempptr, *tempptr1; + chtype ostuff[132], attrs = 0, init_bottom = 0; + + wsetscrreg(win, y, height); + getyx(win, cur_y, cur_x); + + strncpy(tempstr, prompt, MAX_LEN); + tempstr[MAX_LEN] = '\0'; + if ((!rawmode && strstr(tempstr, "\\n") != NULL) || + (strchr(tempstr, '\n') != NULL)) { /* Prompt contains "\n" or '\n' */ + word = tempstr; + while (1) { + tempptr = rawmode ? NULL : strstr(word, "\\n"); + tempptr1 = strchr(word, '\n'); + if (tempptr == NULL && tempptr1 == NULL) + break; + else if (tempptr == NULL) { /* No more "\n" */ + tempptr = tempptr1; + tempptr[0] = '\0'; + } + else if (tempptr1 == NULL) { /* No more '\n' */ + tempptr[0] = '\0'; + tempptr++; + } + else { /* Prompt contains both "\n" and '\n' */ + if (strlen(tempptr)-2 < strlen(tempptr1)-1) { + tempptr = tempptr1; + tempptr[0] = '\0'; + } + else { + tempptr[0] = '\0'; + tempptr++; + } + } + + waddstr(win, word); + word = tempptr + 1; + if (++cur_y > height) { + cur_y--; + if (!init_bottom) { + for (i = 0; i < x; i++) + ostuff[i] = mvwinch(win, cur_y, i); + for (i = width; i < maxwidth; i++) + ostuff[i] = mvwinch(win, cur_y, i); + attrs = getattrs(win); + init_bottom = 1; + } + scrollok(win, TRUE); + scroll(win); + scrollok(win, FALSE); + wmove(win, cur_y, 0); + for (i = 0; i < x; i++) { + wattrset(win, ostuff[i]&A_ATTRIBUTES); + waddch(win, ostuff[i]); + } + wattrset(win, attrs); + for ( ; i < width; i++) + waddch(win, ' '); + for ( ; i < maxwidth; i++) { + wattrset(win, ostuff[i]&A_ATTRIBUTES); + waddch(win, ostuff[i]); + } + wattrset(win, attrs); + wrefresh(win); + } + wmove(win, cur_y, cur_x = x); + } + waddstr(win, word); + } + else if (center && strlen(tempstr) <= width-x*2) { /* If prompt is short */ + wmove(win, cur_y, (width - strlen(tempstr)) / 2); + waddstr(win, tempstr); + } + else if (!center && strlen(tempstr) <= width-cur_x) { /* If prompt is short */ + waddstr(win, tempstr); + } + else { + char *p = tempstr; + + /* Print prompt word by word, wrap around if necessary */ + while ((word = strsep(&p, "\t\n ")) != NULL) { + int loop; + unsigned char sc; + + if (*word == '\0') + continue; + do { + loop = 0; + if (cur_x+strlen(word) >= width+1) { /* wrap around to next line */ + if (x+strlen(word) >= width+1) { + sc = word[width-cur_x-1]; + word[width-cur_x-1] = '\0'; + wmove(win, cur_y, cur_x); + waddstr(win, word); + word[width-cur_x-1] = sc; + word += width-cur_x-1; + getyx(win, cur_y, cur_x); + loop = 1; + } + cur_y++; + cur_x = x; + if (cur_y > height) { + cur_y--; + if (!init_bottom) { + for (i = 0; i < x; i++) + ostuff[i] = mvwinch(win, cur_y, i); + for (i = width; i < maxwidth; i++) + ostuff[i] = mvwinch(win, cur_y, i); + attrs = getattrs(win); + init_bottom = 1; + } + scrollok(win, TRUE); + scroll(win); + scrollok(win, FALSE); + wmove(win, cur_y, 0); + for (i = 0; i < x; i++) { + wattrset(win, ostuff[i]&A_ATTRIBUTES); + waddch(win, ostuff[i]); + } + wattrset(win, attrs); + for ( ; i < width; i++) + waddch(win, ' '); + for ( ; i < maxwidth; i++) { + wattrset(win, ostuff[i]&A_ATTRIBUTES); + waddch(win, ostuff[i]); + } + wattrset(win, attrs); + wrefresh(win); + } + } + } + while(loop); + wmove(win, cur_y, cur_x); + waddstr(win, word); + getyx(win, cur_y, cur_x); + cur_x++; + } + } +} +/* End of print_autowrap() */ + + +/* + * Print a button + */ +void print_button(WINDOW *win, unsigned char *label, int y, int x, int selected) +{ + int i, temp; + + wmove(win, y, x); + wattrset(win, selected ? button_active_attr : button_inactive_attr); + waddstr(win, selected ? "[" : " "); + temp = strspn(label, " "); + label += temp; + for (i = 0; i < temp; i++) + waddch(win, ' '); + wattrset(win, selected ? button_key_active_attr : button_key_inactive_attr); + waddch(win, label[0]); + wattrset(win, selected ? button_active_attr : button_inactive_attr); + waddstr(win, label+1); + waddstr(win, selected ? "]" : " "); + wmove(win, y, x+temp+1); +} +/* End of print_button() */ + + +/* + * Draw a rectangular box with line drawing characters + */ +void draw_box(WINDOW *win, int y, int x, int height, int width, chtype box, chtype border) +{ + int i, j; + + wattrset(win, 0); + for (i = 0; i < height; i++) { + wmove(win, y + i, x); + for (j = 0; j < width; j++) + if (!i && !j) + waddch(win, border | ACS_ULCORNER); + else if (i == height-1 && !j) + waddch(win, border | ACS_LLCORNER); + else if (!i && j == width-1) + waddch(win, box | ACS_URCORNER); + else if (i == height-1 && j == width-1) + waddch(win, box | ACS_LRCORNER); + else if (!i) + waddch(win, border | ACS_HLINE); + else if (i == height-1) + waddch(win, box | ACS_HLINE); + else if (!j) + waddch(win, border | ACS_VLINE); + else if (j == width-1) + waddch(win, box | ACS_VLINE); + else + waddch(win, box | ' '); + } +} +/* End of draw_box() */ + + +#ifdef HAVE_NCURSES +/* + * Draw shadows along the right and bottom edge to give a more 3D look + * to the boxes + */ +void draw_shadow(WINDOW *win, int y, int x, int height, int width) +{ + int i,sx,sy; + chtype attrs; + + if (has_colors()) { /* Whether terminal supports color? */ + getbegyx(win,sy,sx); + attrs = getattrs(win); + if (y+height < getmaxy(win)) { + /* small touch */ + wattrset(win, A_INVIS); + wmove(win, y + height, x + 2); + for (i = 0; i < width; i++) + if (i+x+2 < getmaxx(win)) + waddch(win, ' '); + /* end touch */ + wattrset(win, shadow_attr); + wmove(win, y + height, x + 2); + for (i = 0; i < width; i++) + if (i+x+2 < getmaxx(win)) + waddch(win, mvwinch(newscr, sy+y+height, sx+x+2+i) & A_CHARTEXT); + } + if (x+width < getmaxx(win)) { + for (i = y + 1; i < y + height + 1; i++) { + if (i < getmaxy(win)) { + /* small touch */ + wattrset(win, A_INVIS); + wmove(win, i, x + width); + waddch(win, ' '); + if (x+width+1 < getmaxx(win)) + waddch(win, ' '); + /* end touch */ + wattrset(win, shadow_attr); + wmove(win, i, x + width); + waddch(win, mvwinch(newscr, sy+i, sx+x+width) & A_CHARTEXT); + if (x+width+1 < getmaxx(win)) + waddch(win, mvwinch(newscr, sy+i, sx+x+width+1) & A_CHARTEXT); + } + } + } + wattrset(win, attrs); + wnoutrefresh(win); + } +} +/* End of draw_shadow() */ +#endif + +void dialog_clear_norefresh(void) +{ + attr_clear(stdscr, LINES, COLS, screen_attr); + touchwin(stdscr); + wnoutrefresh(stdscr); +} + +void dialog_clear(void) +{ + dialog_clear_norefresh(); + doupdate(); +} + +void dialog_update(void) +{ + refresh(); +} + +void end_dialog(void) +{ + endwin(); +} + +int strwidth(const char *p) +{ + int i = 0, len, incr; + const char *start, *s, *s1, *s2; + + for (start = s = p; ; start = (s += incr)) { + s1 = strchr(s, '\n'); + s2 = strstr(s, "\\n"); + if (s2 == NULL) + s = s1; + else if (s1 == NULL) + s = s2; + else + s = MIN(s1, s2); + if (s == NULL) + break; + incr = 1 + (s == s2); + len = s - start; + if (len > i) + i = len; + } + len = strlen(start); + if (len > i) + i = len; + return i; +} + +int strheight(const char *p) +{ + int i = 1, incr; + const char *s, *s1, *s2; + + for (s = p; ; s += incr) { + s1 = strchr(s, '\n'); + s2 = strstr(s, "\\n"); + if (s2 == NULL) + s = s1; + else if (s1 == NULL) + s = s2; + else + s = MIN(s1, s2); + if (s == NULL) + break; + incr = 1 + (s == s2); + i++; + } + return i; +} + +void print_arrows(WINDOW *dialog, int scroll, int menu_height, int item_no, + int box_x, int box_y, int tag_x, int cur_x, int cur_y) +{ + wmove(dialog, box_y, box_x + tag_x + 1); + wattrset(dialog, scroll ? uarrow_attr : menubox_attr); + waddch(dialog, scroll ? ACS_UARROW : ACS_HLINE); + wmove(dialog, box_y, box_x + tag_x + 2); + waddch(dialog, scroll ? '(' : ACS_HLINE); + wmove(dialog, box_y, box_x + tag_x + 3); + waddch(dialog, scroll ? '-' : ACS_HLINE); + wmove(dialog, box_y, box_x + tag_x + 4); + waddch(dialog, scroll ? ')' : ACS_HLINE); + wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1); + wattrset(dialog, scroll+menu_height < item_no ? darrow_attr : menubox_border_attr); + waddch(dialog, scroll+menu_height < item_no ? ACS_DARROW : ACS_HLINE); + wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2); + waddch(dialog, scroll+menu_height < item_no ? '(' : ACS_HLINE); + wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 3); + waddch(dialog, scroll+menu_height < item_no ? '+' : ACS_HLINE); + wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 4); + waddch(dialog, scroll+menu_height < item_no ? ')' : ACS_HLINE); + wmove(dialog, cur_y, cur_x); /* Restore cursor position */ +} + |
