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- /*
- * util.c
- *
- * 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.
- */
-
- #include "dialog.h"
-
- #ifdef HAVE_NCURSES
- /* use colors by default? */
- bool use_colors = USE_COLORS;
- /* shadow dialog boxes by default?
- Note that 'use_shadow' implies 'use_colors' */
- bool use_shadow = USE_SHADOW;
- #endif
-
- const char *dialog_result;
-
- /*
- * Attribute values, default is for mono display
- */
- chtype attributes[] =
- {
- A_NORMAL, /* screen_attr */
- A_NORMAL, /* shadow_attr */
- A_REVERSE, /* dialog_attr */
- A_REVERSE, /* title_attr */
- A_REVERSE, /* border_attr */
- A_BOLD, /* button_active_attr */
- A_DIM, /* button_inactive_attr */
- A_UNDERLINE, /* button_key_active_attr */
- A_UNDERLINE, /* button_key_inactive_attr */
- A_NORMAL, /* button_label_active_attr */
- A_NORMAL, /* button_label_inactive_attr */
- A_REVERSE, /* inputbox_attr */
- A_REVERSE, /* inputbox_border_attr */
- A_REVERSE, /* searchbox_attr */
- A_REVERSE, /* searchbox_title_attr */
- A_REVERSE, /* searchbox_border_attr */
- A_REVERSE, /* position_indicator_attr */
- A_REVERSE, /* menubox_attr */
- A_REVERSE, /* menubox_border_attr */
- A_REVERSE, /* item_attr */
- A_NORMAL, /* item_selected_attr */
- A_REVERSE, /* tag_attr */
- A_REVERSE, /* tag_selected_attr */
- A_NORMAL, /* tag_key_attr */
- A_BOLD, /* tag_key_selected_attr */
- A_REVERSE, /* check_attr */
- A_REVERSE, /* check_selected_attr */
- A_REVERSE, /* uarrow_attr */
- A_REVERSE /* darrow_attr */
- };
-
- #ifdef HAVE_NCURSES
- #include "colors.h"
-
- /*
- * Table of color values
- */
- int color_table[][3] =
- {
- {SCREEN_FG, SCREEN_BG, SCREEN_HL},
- {SHADOW_FG, SHADOW_BG, SHADOW_HL},
- {DIALOG_FG, DIALOG_BG, DIALOG_HL},
- {TITLE_FG, TITLE_BG, TITLE_HL},
- {BORDER_FG, BORDER_BG, BORDER_HL},
- {BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL},
- {BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL},
- {BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL},
- {BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, BUTTON_KEY_INACTIVE_HL},
- {BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, BUTTON_LABEL_ACTIVE_HL},
- {BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG,
- BUTTON_LABEL_INACTIVE_HL},
- {INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL},
- {INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL},
- {SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL},
- {SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL},
- {SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL},
- {POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL},
- {MENUBOX_FG, MENUBOX_BG, MENUBOX_HL},
- {MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL},
- {ITEM_FG, ITEM_BG, ITEM_HL},
- {ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL},
- {TAG_FG, TAG_BG, TAG_HL},
- {TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL},
- {TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL},
- {TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL},
- {CHECK_FG, CHECK_BG, CHECK_HL},
- {CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL},
- {UARROW_FG, UARROW_BG, UARROW_HL},
- {DARROW_FG, DARROW_BG, DARROW_HL},
- }; /* color_table */
- #endif
-
- /*
- * Display background title if it exists ...
- */
- void put_backtitle(void)
- {
-
- int i;
-
- if (backtitle != NULL)
- {
- wattrset(stdscr, screen_attr);
- wmove(stdscr, 0, 1);
- waddstr(stdscr,backtitle);
- for(i=0; i<COLS-strlen(backtitle); i++)
- waddch(stdscr, ' ');
- wmove(stdscr, 1, 1);
- for(i=0; i<COLS-2; i++)
- waddch(stdscr, ACS_HLINE);
- }
-
- wnoutrefresh(stdscr);
- }
-
- /*
- * Set window to attribute 'attr'
- */
- void
- attr_clear (WINDOW * win, int height, int width, chtype attr)
- {
- int i, j;
-
- wattrset (win, attr);
- for (i = 0; i < height; i++) {
- wmove (win, i, 0);
- for (j = 0; j < width; j++)
- waddch (win, ' ');
- }
- touchwin (win);
- }
-
- /*
- * Do some initialization for dialog
- */
- void
- init_dialog (void)
- {
- mouse_open ();
- #ifdef HAVE_RC_FILE
- #ifdef HAVE_NCURSES
- if (parse_rc () == -1) /* Read the configuration file */
- exiterr("");
- #endif
- #endif
-
- initscr (); /* Init curses */
- keypad (stdscr, TRUE);
- cbreak ();
- noecho ();
- screen_initialized = 1;
-
- #ifdef HAVE_NCURSES
- if (use_colors || use_shadow) /* Set up colors */
- color_setup ();
- #endif
-
- /* Set screen to screen attribute */
- attr_clear (stdscr, LINES, COLS, screen_attr);
- }
-
- #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);
- }
- }
- #endif
-
- /*
- * End using dialog functions.
- */
- void
- end_dialog (void)
- {
- mouse_close ();
- endwin ();
- }
-
- /*
- * 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, const char *prompt, int width, int y, int x)
- {
- int first = 1, cur_x, cur_y;
- char tempstr[MAX_LEN+1], *word, *tempptr, *tempptr1;
-
- strcpy(tempstr, prompt);
- if ((strstr(tempstr, "\\n") != NULL) ||
- (strchr(tempstr, '\n') != NULL)) { /* Prompt contains "\n" or '\n' */
- word = tempstr;
- cur_y = y;
- if (cr_wrap) cur_y++;
- wmove(win, cur_y, x);
- while (1) {
- tempptr = 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) <= strlen(tempptr1)) {
- tempptr = tempptr1;
- tempptr[0] = '\0';
- }
- else {
- tempptr[0] = '\0';
- tempptr++;
- }
- }
-
- waddstr(win, word);
- word = tempptr + 1;
- wmove(win, ++cur_y, x);
- }
- waddstr(win, word);
- }
- else if (strlen(tempstr) <= width-x*2) { /* If prompt is short */
- cur_y=y;
- if (cr_wrap) cur_y++;
- wmove(win, cur_y, (width - strlen(tempstr)) / 2);
- waddstr(win, tempstr);
- }
- else {
- cur_x = x;
- cur_y = y;
- if (cr_wrap) cur_y++;
- /* Print prompt word by word, wrap around if necessary */
- while ((word = strtok(first ? tempstr : NULL, " ")) != NULL) {
- if (first) /* First iteration */
- first = 0;
- if (cur_x+strlen(word) > width-x) { /* wrap around to next line */
- cur_y++;
- cur_x = x;
- }
- wmove(win, cur_y, cur_x);
- waddstr(win, word);
- getyx(win, cur_y, cur_x);
- cur_x++;
- }
- }
- if (cr_wrap) wmove(win, cur_y+1, x);
- }
-
- /*
- * if (height or width == -1) Maximize()
- * if (height or width == 0)
- * if (there are \n in prompt)
- * width=MAX(longer line+n, mincols)
- * height=num.lines
- * else
- * calculate with aspect_ratio
- */
- char *auto_size(char *prompt, int *height, int *width, int boxlines, int mincols) {
- int count = 0, len = 0, street, i, first, nc = 4, nl = 3,
- cur_x, text_width;
- char *cr1, *cr2, *ptr = prompt, *str, *word;
-
- if ((*height == -1) || (*width == -1)) {
- *height=SLINES-(begin_set ? begin_y : 0);
- *width=SCOLS-(begin_set ? begin_x : 0);
- }
- if ((*height != 0) && (*width != 0))
- return prompt;
-
- cr1=strstr(ptr, "\\n");
- cr2=strchr(ptr, '\n');
-
- while ((cr1 != NULL) || (cr2 != NULL)) { /* how many ("\n" or '\n') prompt contains? */
-
- if (cr1 == NULL)
- street=2;
- else if (cr2 == NULL)
- street=1;
- else if (cr1 < cr2)
- street=1;
- else
- street=2;
-
- if (street == 1) {
- if ((cr1-ptr) > len)
- len=cr1-ptr;
- ptr=cr1+2;
- } else {
- if ((cr2-ptr) > len)
- len=cr2-ptr;
- ptr=cr2+1;
- }
-
- cr1=strstr(ptr, "\\n");
- cr2=strchr(ptr, '\n');
-
- count++;
- }
-
- if (strlen(ptr) > len)
- len=strlen(ptr);
-
- /* now 'count' has the number of lines of text and 'len' the max lenght */
-
- if (count > 0) { /* there are any '\n' or "\\n" */
- *height=count+nl+boxlines+(cr_wrap ? 2 : 0);
- *width=MAX((len+nc), mincols);
- return prompt;
- } else { /* all chars in only a line */
- str = (char *)malloc(strlen(prompt)*2);
- text_width = MAX( ((int) sqrt((double)(aspect_ratio*strlen(prompt)))), (mincols-nc));
- ptr = (char *)malloc(strlen(prompt)+1);
-
- while (1) {
- i = 0;
-
- first = 1;
- cur_x = 0;
-
- *width=text_width+nc;
-
- count=0;
- strcpy(ptr, prompt);
- while (((word=strtok(first ? ptr : NULL, " ")) != NULL) && (strlen(word) <= text_width)) {
- if (first)
- first = 0;
-
- if ((cur_x+strlen(word)) > text_width) {
- count++;
- cur_x=0;
- str[i++]='\n';
- } else if (cur_x > 0)
- str[i++]=' ';
-
- strcpy(str+i, word);
- i+=strlen(word);
-
- cur_x+=strlen(word)+1;
- }
-
- if (word == NULL) break;
- if (strlen(word) > text_width)
- text_width = strlen(word); /* strlen(word) is surely > (mincols-nc) */
- else
- break;
- }
- str[i]=0;
-
- *height=count+nl+boxlines+(cr_wrap ? 2 : 0);
- /* *height=(strlen(prompt)/text_width)+nl+boxlines */
-
- return str;
- }
- }
- /* End of auto_size() */
-
- /*
- * if (height or width == -1) Maximize()
- * if (height or width == 0)
- * height=MIN(SLINES, num.lines in fd+n);
- * width=MIN(SCOLS, MAX(longer line+n, mincols));
- */
- void auto_sizefile(const char *file, int *height, int *width, int boxlines, int mincols) {
- int count = 0, len = 0, nc = 4, nl = 2;
- long offset;
- char ch;
- FILE *fd;
-
- /* Open input file for reading */
- if ((fd = fopen(file, "rb")) == NULL)
- exiterr("\nCan't open input file in auto_sizefile().\n");
-
- if ((*height == -1) || (*width == -1)) {
- *height=SLINES-(begin_set ? begin_y : 0);
- *width=SCOLS-(begin_set ? begin_x : 0);
- }
- if ((*height != 0) && (*width != 0)) {
- fclose(fd);
- return;
- }
-
- while (!feof(fd)) {
- offset = 0;
- while (((ch=getc(fd)) != '\n') && !feof(fd))
- if ((ch == TAB) && (tab_correct))
- offset+=tab_len-(offset%tab_len);
- else
- offset++;
-
- if (offset > len)
- len=offset;
-
- count++;
- }
-
- /* now 'count' has the number of lines of fd and 'len' the max lenght */
-
- *height=MIN(SLINES, count+nl+boxlines);
- *width=MIN(SCOLS, MAX((len+nc), mincols));
- /* here width and height can be maximized if > SCOLS|SLINES because
- textbox-like widgets don't put all <file> on the screen.
- Msgbox-like widget instead have to put all <text> correctly. */
-
- fclose(fd);
- }
- /* End of auto_sizefile() */
-
- /*
- * Print a button
- */
- void
- print_button (WINDOW * win, const 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, "<");
- temp = strspn (label, " ");
- mouse_mkbutton (y, x, strlen (label) + 2, tolower (label[temp]));
- label += temp;
- wattrset (win, selected ? button_label_active_attr
- : button_label_inactive_attr);
- 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_label_active_attr
- : button_label_inactive_attr);
- waddstr (win, label + 1);
- wattrset (win, selected ? button_active_attr : button_inactive_attr);
- waddstr (win, ">");
- wmove (win, y, x + temp + 1);
- }
-
- /*
- * 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 | ' ');
- }
- }
-
- #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;
-
- if (has_colors ()) { /* Whether terminal supports color? */
- wattrset (win, shadow_attr);
- wmove (win, y + height, x + 2);
- for (i = 0; i < width; i++)
- waddch (win, winch (win) & A_CHARTEXT);
- for (i = y + 1; i < y + height + 1; i++) {
- wmove (win, i, x + width);
- waddch (win, winch (win) & A_CHARTEXT);
- waddch (win, winch (win) & A_CHARTEXT);
- }
- wnoutrefresh (win);
- }
- }
- #endif
-
- /*
- * make_tmpfile()
- */
- char *make_lock_filename(char *filename) {
- char *file=(char *) malloc(30);
- strcpy(file, filename);
- if (mktemp(file) == NULL) {
- endwin();
- fprintf(stderr, "\nCan't make tempfile...\n");
- return NULL;
- }
- return file;
- }
- /* End of make_tmpfile() */
-
- /*
- * Only a process at a time can call wrefresh()
- */
-
- /* called by all normal widget */
- void wrefresh_lock(WINDOW *win) {
- wrefresh_lock_sub(win);
-
- if (exist_lock(lock_tailbg_refreshed))
- remove_lock(lock_tailbg_refreshed);
-
- }
-
- /* If a tailboxbg was wrefreshed, wrefresh again the principal (normal) widget.
- *
- * The important thing here was to put cursor in the principal widget,
- * but with touchwin(win) the principal widget is also rewritten. This
- * is needed if a tailboxbg has overwritten this widget.
- */
- void ctl_idlemsg(WINDOW *win) {
- if (exist_lock(lock_tailbg_refreshed))
- wrefresh_lock(win);
-
- /* if a tailboxbg exited, quit */
- if (exist_lock(lock_tailbg_exit)) {
- remove_lock(lock_tailbg_exit);
- exiterr("");
- }
- }
-
- /* call by tailboxbg, the resident widget */
- void wrefresh_lock_tailbg(WINDOW *win) {
- wrefresh_lock_sub(win);
- create_lock(lock_tailbg_refreshed);
- /* it's right also if more tailboxbg refresh */
- /* with --no-kill flag the lock_tailbg_refreshed file
- will not be removed :-/ :-| */
- }
-
- /* private function, used by wrefresh_lock() and wrefresh_lock_tailbg() */
- void wrefresh_lock_sub(WINDOW *win) {
- while_exist_lock(lock_refresh);
- create_lock(lock_refresh);
- wrefresh(win);
- beeping();
- wrefresh(win);
- remove_lock(lock_refresh);
- }
- /* End of wrefresh functions */
-
- /*
- * To work with lock files, here are some functions
- */
- int exist_lock(char *filename) {
- FILE *fil;
- if ((fil=fopen(filename, "r")) != NULL) {
- fclose(fil);
- return 1;
- }
- return 0;
- }
-
- void while_exist_lock(char *filename) {
- while (exist_lock(filename)) ;
- }
-
- void create_lock(char *filename) {
- FILE *fil=fopen(filename, "w");
- fclose(fil);
- }
-
- void remove_lock(char *filename) {
- remove(filename);
- }
- /* End of functions to work with lock files */
-
- /* killall_bg: kill all tailboxbg, if any */
- void killall_bg(void) {
- int i;
- for (i = 0; i < tailbg_lastpid; i++)
- kill(tailbg_pids[i], 15);
- }
-
- int is_nokill(int pid) { /* private func for quitall_bg() */
- int i;
- for (i = 0; i < tailbg_nokill_lastpid; i++)
- if (tailbg_nokill_pids[i] == pid) return 1;
- return 0;
- }
- /* quitall_bg: kill all tailboxbg without --no-kill flag */
- void quitall_bg(void) {
- int i;
- for (i = 0; i < tailbg_lastpid; i++)
- if (!is_nokill(tailbg_pids[i]))
- kill(tailbg_pids[i], 15);
- }
-
- /* exiterr quit program killing all tailbg */
- void exiterr(char *str) {
- if (screen_initialized)
- endwin();
-
- fprintf(stderr, str);
-
- if (is_tailbg) /* this is a child process */
- create_lock(lock_tailbg_exit);
- else
- killall_bg();
-
- exit(-1);
- }
-
- void beeping() {
- if (beep_signal) {
- beep();
- beep_signal = 0;
- }
- }
-
- void print_size(int height, int width) {
- if (print_siz)
- fprintf(stderr, "Size: %d, %d\n", height, width);
- }
-
- void ctl_size(int height, int width) {
- char *tempstr=(char *) malloc((size_t) MAX_LEN+1);
- if (size_err)
- if ((width > COLS) || (height > LINES)) {
- sprintf(tempstr,"\nWindow too big. (Height, width) = (%d, %d). Max allowed (%d, %d).\n", height, width, LINES, COLS);
- exiterr(tempstr);
- } else if ((use_shadow) && ((width > SCOLS || height > SLINES))) {
- sprintf(tempstr,"\nWindow+Shadow too big. (Height, width) = (%d, %d). Max allowed (%d, %d).\n", height, width, SLINES, SCOLS);
- exiterr(tempstr);
- }
- }
-
- void tab_correct_str(char *prompt) {
- char *ptr;
-
- if (!tab_correct) return;
-
- while ((ptr=strchr(prompt, TAB)) != NULL) {
- *ptr=' ';
- prompt=ptr;
- }
- }
-
- void calc_listh(int *height, int *list_height, int item_no) {
- /* calculate new height and list_height */
- int lines=SLINES-(begin_set ? begin_y : 0);
- if (lines-(*height) > 0)
- if (lines-(*height) > item_no)
- *list_height=item_no;
- else
- *list_height=lines-(*height);
- (*height)+=(*list_height);
- }
-
- int calc_listw(int item_no, const char * const * items, int group) {
- int n, i, len1=0, len2=0;
- for (i=0; i<(item_no*group); i+=group) {
- if ((n=strlen(items[i])) > len1) len1=n;
- if ((n=strlen(items[i+1])) > len2) len2=n;
- }
- return len1+len2;
- }
-
- char *strclone(const char *cprompt) {
- char *prompt=(char *) malloc(strlen(cprompt));
- strcpy(prompt, cprompt);
- return prompt;
- }
-