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30 * Author: Thomas E. Dickey
32 * $Id: cardfile.c,v 1.42 2013/09/28 22:02:17 tom Exp $
34 * File format: text beginning in column 1 is a title; other text is content.
37 #include <test.priv.h>
39 #if USE_LIBFORM && USE_LIBPANEL
44 #define VISIBLE_CARDS 10
49 #define isVisible(cardp) ((cardp)->panel != 0)
52 MY_CTRL_x = MAX_FORM_COMMAND
59 typedef struct _card {
67 static CARD *all_cards;
68 static bool try_color = FALSE;
69 static char default_name[] = "cardfile.dat";
76 ExitProgram(EXIT_FAILURE);
80 skip(const char *buffer)
82 while (isspace(UChar(*buffer)))
90 size_t n = strlen(buffer);
91 while (n-- && isspace(UChar(buffer[n])))
95 /*******************************************************************************/
98 add_title(const char *title)
102 for (p = all_cards, q = 0; p != 0; q = p, p = p->link) {
103 int cmp = strcmp(p->title, title);
110 card = typeCalloc(CARD, (size_t) 1);
111 card->title = strdup(title);
112 card->content = strdup("");
115 card->link = all_cards;
118 card->link = q->link;
126 add_content(CARD * card, const char *content)
128 size_t total, offset;
130 content = skip(content);
131 if ((total = strlen(content)) != 0) {
132 if (card->content != 0 && (offset = strlen(card->content)) != 0) {
134 card->content = typeRealloc(char, total + 1, card->content);
136 strcpy(card->content + offset++, " ");
139 if (card->content != 0)
141 card->content = typeMalloc(char, total + 1);
144 strcpy(card->content + offset, content);
146 failed("add_content");
153 CARD *card = add_title("");
154 add_content(card, "");
159 find_card(char *title)
163 for (card = all_cards; card != 0; card = card->link)
164 if (!strcmp(card->title, title))
171 read_data(char *fname)
177 if ((fp = fopen(fname, "r")) != 0) {
178 while (fgets(buffer, sizeof(buffer), fp)) {
180 if (isspace(UChar(*buffer))) {
182 card = add_title("");
183 add_content(card, buffer);
184 } else if ((card = find_card(buffer)) == 0) {
185 card = add_title(buffer);
192 /*******************************************************************************/
195 write_data(const char *fname)
201 if (!strcmp(fname, default_name))
202 fname = "cardfile.out";
204 if ((fp = fopen(fname, "w")) != 0) {
205 for (p = all_cards; p != 0; p = p->link) {
206 FIELD **f = form_fields(p->form);
207 for (n = 0; f[n] != 0; n++) {
208 char *s = field_buffer(f[n], 0);
210 && (s = strdup(s)) != 0) {
212 fprintf(fp, "%s%s\n", n ? "\t" : "", s);
221 /*******************************************************************************/
232 for (p = all_cards; p != 0; p = p->link)
239 * Shuffle the panels to keep them in a natural hierarchy.
242 order_cards(CARD * first, int depth)
245 if (depth && first->link)
246 order_cards(first->link, depth - 1);
247 if (isVisible(first))
248 top_panel(first->panel);
253 * Return the next card in the list
256 next_card(CARD * now)
258 if (now->link != 0) {
259 CARD *tst = now->link;
263 (void) next_card(tst);
269 * Return the previous card in the list
272 prev_card(CARD * now)
275 for (p = all_cards; p != 0; p = p->link) {
276 if (p->link == now) {
286 * Returns the first card in the list that we will display.
289 first_card(CARD * now)
292 now = next_card(now);
296 /*******************************************************************************/
299 form_virtualize(WINDOW *w)
315 return (REQ_DEL_PREV);
317 return (REQ_DEL_CHAR);
319 return (REQ_LEFT_CHAR);
321 return (REQ_RIGHT_CHAR);
325 return (REQ_NEXT_FIELD);
328 return (REQ_PREV_FIELD);
336 make_fields(CARD * p, int form_high, int form_wide)
338 FIELD **f = typeCalloc(FIELD *, (size_t) 3);
340 f[0] = new_field(1, form_wide, 0, 0, 0, 0);
341 set_field_back(f[0], A_REVERSE);
342 set_field_buffer(f[0], 0, p->title);
343 field_opts_off(f[0], O_BLANK);
345 f[1] = new_field(form_high - 1, form_wide, 1, 0, 0, 0);
346 set_field_buffer(f[1], 0, p->content);
347 set_field_just(f[1], JUSTIFY_LEFT);
348 field_opts_off(f[1], O_BLANK);
359 addstr("^Q/ESC -- exit form ^W -- writes data to file\n");
360 addstr("^N -- go to next card ^P -- go to previous card\n");
361 addstr("Arrow keys move left/right within a field, up/down between fields");
364 #if (defined(KEY_RESIZE) && HAVE_WRESIZE) || NO_LEAKS
366 free_form_fields(FIELD ** f)
370 for (n = 0; f[n] != 0; ++n) {
377 /*******************************************************************************/
380 cardfile(char *fname)
393 int finished = FALSE;
397 /* decide how many cards we can display */
398 visible_cards = count_cards();
400 (panel_wide = COLS - (visible_cards * OFFSET_CARD)) < 10 ||
401 (panel_high = LINES - (visible_cards * OFFSET_CARD) - 5) < 5) {
404 form_wide = panel_wide - 2;
405 form_high = panel_high - 2;
406 y = (visible_cards - 1) * OFFSET_CARD;
409 /* make a panel for each CARD */
410 for (p = all_cards; p != 0; p = p->link) {
412 if ((win = newwin(panel_high, panel_wide, y, x)) == 0)
415 wbkgd(win, (chtype) COLOR_PAIR(pair_2));
417 p->panel = new_panel(win);
420 p->form = new_form(make_fields(p, form_high, form_wide));
421 set_form_win(p->form, win);
422 set_form_sub(p->form, derwin(win, form_high, form_wide, 1, 1));
429 top_card = first_card(all_cards);
430 order_cards(top_card, visible_cards);
436 ch = form_virtualize(panel_window(top_card->panel));
437 switch (form_driver(top_card->form, ch)) {
440 case E_UNKNOWN_COMMAND:
446 top_card = prev_card(top_card);
447 order_cards(top_card, visible_cards);
450 top_card = next_card(top_card);
451 order_cards(top_card, visible_cards);
454 form_driver(top_card->form, REQ_VALIDATION);
457 #if defined(KEY_RESIZE) && HAVE_WRESIZE
459 /* resizeterm already did "something" reasonable, but it cannot
460 * know much about layout. So let's make it nicer.
462 panel_wide = COLS - (visible_cards * OFFSET_CARD);
463 panel_high = LINES - (visible_cards * OFFSET_CARD) - 5;
465 form_wide = panel_wide - 2;
466 form_high = panel_high - 2;
468 y = (visible_cards - 1) * OFFSET_CARD;
472 for (p = all_cards; p != 0; p = p->link) {
473 FIELD **oldf = form_fields(p->form);
474 WINDOW *olds = form_sub(p->form);
478 win = form_win(p->form);
480 /* move and resize the card as needed
481 * FIXME: if the windows are shrunk too much, this won't do
484 wresize(win, panel_high, panel_wide);
486 /* reconstruct each form. Forms are not resizable, and
487 * there appears to be no good way to reload the text in
492 unpost_form(p->form);
495 p->form = new_form(make_fields(p, form_high, form_wide));
496 set_form_win(p->form, win);
497 set_form_sub(p->form, derwin(win, form_high, form_wide,
501 free_form_fields(oldf);
522 while (all_cards != 0) {
526 all_cards = all_cards->link;
529 f = form_fields(p->form);
531 unpost_form(p->form); /* ...so we can free it */
532 free_form(p->form); /* this also disconnects the fields */
548 static const char *msg[] =
550 "Usage: view [options] file"
553 ," -c use color if terminal supports it"
556 for (n = 0; n < SIZEOF(msg); n++)
557 fprintf(stderr, "%s\n", msg[n]);
558 ExitProgram(EXIT_FAILURE);
561 /*******************************************************************************/
564 main(int argc, char *argv[])
568 setlocale(LC_ALL, "");
570 while ((n = getopt(argc, argv, "c")) != -1) {
587 init_pair(pair_1, COLOR_WHITE, COLOR_BLUE);
588 init_pair(pair_2, COLOR_WHITE, COLOR_CYAN);
589 bkgd((chtype) COLOR_PAIR(pair_1));
595 if (optind + 1 == argc) {
596 for (n = 1; n < argc; n++)
598 if (count_cards() == 0)
602 read_data(default_name);
603 if (count_cards() == 0)
605 cardfile(default_name);
610 ExitProgram(EXIT_SUCCESS);
616 printf("This program requires the curses form and panel libraries\n");
617 ExitProgram(EXIT_FAILURE);