/****************************************************************************
- * Copyright (c) 1999,2000 Free Software Foundation, Inc. *
+ * Copyright (c) 1999-2012,2013 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
****************************************************************************/
/*
- * Author: Thomas E. Dickey <dickey@clark.net> 1999
+ * Author: Thomas E. Dickey
*
- * $Id: cardfile.c,v 1.4 2000/03/19 01:34:00 tom Exp $
+ * $Id: cardfile.c,v 1.42 2013/09/28 22:02:17 tom Exp $
*
- * File format: text beginning in column 1 is a title; other text forms the content.
+ * File format: text beginning in column 1 is a title; other text is content.
*/
#include <test.priv.h>
+#if USE_LIBFORM && USE_LIBPANEL
+
#include <form.h>
#include <panel.h>
-#include <string.h>
-#include <ctype.h>
-
#define VISIBLE_CARDS 10
#define OFFSET_CARD 2
+#define pair_1 1
+#define pair_2 2
-#ifndef CTRL
-#define CTRL(x) ((x) & 0x1f)
-#endif
+#define isVisible(cardp) ((cardp)->panel != 0)
+
+enum {
+ MY_CTRL_x = MAX_FORM_COMMAND
+ ,MY_CTRL_N
+ ,MY_CTRL_P
+ ,MY_CTRL_Q
+ ,MY_CTRL_W
+};
typedef struct _card {
struct _card *link;
} CARD;
static CARD *all_cards;
+static bool try_color = FALSE;
static char default_name[] = "cardfile.dat";
-#if !HAVE_STRDUP
-#define strdup my_strdup
-static char *
-strdup(char *s)
+static void
+failed(const char *s)
{
- char *p = (char *) malloc(strlen(s) + 1);
- if (p)
- strcpy(p, s);
- return (p);
+ perror(s);
+ endwin();
+ ExitProgram(EXIT_FAILURE);
}
-#endif /* not HAVE_STRDUP */
-static char *
-skip(char *buffer)
+static const char *
+skip(const char *buffer)
{
- while (isspace(*buffer))
+ while (isspace(UChar(*buffer)))
buffer++;
return buffer;
}
static void
trim(char *buffer)
{
- unsigned n = strlen(buffer);
- while (n-- && isspace(buffer[n]))
+ size_t n = strlen(buffer);
+ while (n-- && isspace(UChar(buffer[n])))
buffer[n] = 0;
}
break;
}
- card = (CARD *) calloc(1, sizeof(CARD));
+ card = typeCalloc(CARD, (size_t) 1);
card->title = strdup(title);
card->content = strdup("");
}
static void
-add_content(CARD * card, char *content)
+add_content(CARD * card, const char *content)
{
- unsigned total, offset;
+ size_t total, offset;
content = skip(content);
if ((total = strlen(content)) != 0) {
- if ((offset = strlen(card->content)) != 0) {
+ if (card->content != 0 && (offset = strlen(card->content)) != 0) {
total += 1 + offset;
- card->content = (char *) realloc(card->content, total + 1);
- strcpy(card->content + offset++, " ");
+ card->content = typeRealloc(char, total + 1, card->content);
+ if (card->content)
+ strcpy(card->content + offset++, " ");
} else {
- card->content = (char *) malloc(total + 1);
+ offset = 0;
+ if (card->content != 0)
+ free(card->content);
+ card->content = typeMalloc(char, total + 1);
}
- strcpy(card->content + offset, content);
+ if (card->content)
+ strcpy(card->content + offset, content);
+ else
+ failed("add_content");
}
}
if ((fp = fopen(fname, "r")) != 0) {
while (fgets(buffer, sizeof(buffer), fp)) {
trim(buffer);
- if (isspace(*buffer)) {
+ if (isspace(UChar(*buffer))) {
if (card == 0)
card = add_title("");
add_content(card, buffer);
if (first) {
if (depth && first->link)
order_cards(first->link, depth - 1);
- top_panel(first->panel);
+ if (isVisible(first))
+ top_panel(first->panel);
}
}
static CARD *
next_card(CARD * now)
{
- if (now->link)
- now = now->link;
+ if (now->link != 0) {
+ CARD *tst = now->link;
+ if (isVisible(tst))
+ now = tst;
+ else
+ (void) next_card(tst);
+ }
return now;
}
prev_card(CARD * now)
{
CARD *p;
- for (p = all_cards; p != 0; p = p->link)
- if (p->link == now)
+ for (p = all_cards; p != 0; p = p->link) {
+ if (p->link == now) {
+ if (!isVisible(p))
+ p = prev_card(p);
return p;
+ }
+ }
+ return now;
+}
+
+/*
+ * Returns the first card in the list that we will display.
+ */
+static CARD *
+first_card(CARD * now)
+{
+ if (!isVisible(now))
+ now = next_card(now);
return now;
}
switch (c) {
case CTRL('W'):
- return (MAX_FORM_COMMAND + 4);
+ return (MY_CTRL_W);
case CTRL('N'):
- return (MAX_FORM_COMMAND + 3);
+ return (MY_CTRL_N);
case CTRL('P'):
- return (MAX_FORM_COMMAND + 2);
- case CTRL('Q'):
- case 033:
- return (MAX_FORM_COMMAND + 1);
+ return (MY_CTRL_P);
+ case QUIT:
+ case ESCAPE:
+ return (MY_CTRL_Q);
case KEY_BACKSPACE:
return (REQ_DEL_PREV);
}
}
+static FIELD **
+make_fields(CARD * p, int form_high, int form_wide)
+{
+ FIELD **f = typeCalloc(FIELD *, (size_t) 3);
+
+ f[0] = new_field(1, form_wide, 0, 0, 0, 0);
+ set_field_back(f[0], A_REVERSE);
+ set_field_buffer(f[0], 0, p->title);
+ field_opts_off(f[0], O_BLANK);
+
+ f[1] = new_field(form_high - 1, form_wide, 1, 0, 0, 0);
+ set_field_buffer(f[1], 0, p->content);
+ set_field_just(f[1], JUSTIFY_LEFT);
+ field_opts_off(f[1], O_BLANK);
+
+ f[2] = 0;
+ return f;
+}
+
+static void
+show_legend(void)
+{
+ erase();
+ move(LINES - 3, 0);
+ addstr("^Q/ESC -- exit form ^W -- writes data to file\n");
+ addstr("^N -- go to next card ^P -- go to previous card\n");
+ addstr("Arrow keys move left/right within a field, up/down between fields");
+}
+
+#if (defined(KEY_RESIZE) && HAVE_WRESIZE) || NO_LEAKS
+static void
+free_form_fields(FIELD ** f)
+{
+ int n;
+
+ for (n = 0; f[n] != 0; ++n) {
+ free_field(f[n]);
+ }
+ free(f);
+}
+#endif
+
/*******************************************************************************/
static void
WINDOW *win;
CARD *p;
CARD *top_card;
- int visible_cards = count_cards();
- int panel_wide = COLS - (visible_cards * OFFSET_CARD);
- int panel_high = LINES - (visible_cards * OFFSET_CARD) - 5;
- int form_wide = panel_wide - 2;
- int form_high = panel_high - 2;
- int x = (visible_cards - 1) * OFFSET_CARD;
- int y = 0;
- int ch;
+ int visible_cards;
+ int panel_wide;
+ int panel_high;
+ int form_wide;
+ int form_high;
+ int y;
+ int x;
+ int ch = ERR;
int finished = FALSE;
- move(LINES - 3, 0);
- addstr("^Q/ESC -- exit form ^W -- writes data to file\n");
- addstr("^N -- go to next card ^P -- go to previous card\n");
- addstr("Arrow keys move left/right within a field, up/down between fields");
+ show_legend();
+
+ /* decide how many cards we can display */
+ visible_cards = count_cards();
+ while (
+ (panel_wide = COLS - (visible_cards * OFFSET_CARD)) < 10 ||
+ (panel_high = LINES - (visible_cards * OFFSET_CARD) - 5) < 5) {
+ --visible_cards;
+ }
+ form_wide = panel_wide - 2;
+ form_high = panel_high - 2;
+ y = (visible_cards - 1) * OFFSET_CARD;
+ x = 0;
/* make a panel for each CARD */
for (p = all_cards; p != 0; p = p->link) {
- FIELD **f = (FIELD **) calloc(3, sizeof(FIELD *));
- win = newwin(panel_high, panel_wide, x, y);
+ if ((win = newwin(panel_high, panel_wide, y, x)) == 0)
+ break;
+
+ wbkgd(win, (chtype) COLOR_PAIR(pair_2));
keypad(win, TRUE);
p->panel = new_panel(win);
box(win, 0, 0);
- /* ...and a form in each panel */
- f[0] = new_field(1, form_wide, 0, 0, 0, 0);
- set_field_back(f[0], A_REVERSE);
- set_field_buffer(f[0], 0, p->title);
-
- f[1] = new_field(form_high - 1, form_wide, 1, 0, 0, 0);
- set_field_buffer(f[1], 0, p->content);
- set_field_just(f[1], JUSTIFY_LEFT);
-
- f[2] = 0;
-
- p->form = new_form(f);
+ p->form = new_form(make_fields(p, form_high, form_wide));
set_form_win(p->form, win);
set_form_sub(p->form, derwin(win, form_high, form_wide, 1, 1));
post_form(p->form);
- x -= OFFSET_CARD;
- y += OFFSET_CARD;
+ y -= OFFSET_CARD;
+ x += OFFSET_CARD;
}
- order_cards(top_card = all_cards, visible_cards);
+ top_card = first_card(all_cards);
+ order_cards(top_card, visible_cards);
while (!finished) {
update_panels();
doupdate();
- switch (form_driver(top_card->form, ch =
- form_virtualize(panel_window(top_card->panel)))) {
+ ch = form_virtualize(panel_window(top_card->panel));
+ switch (form_driver(top_card->form, ch)) {
case E_OK:
break;
case E_UNKNOWN_COMMAND:
switch (ch) {
- case MAX_FORM_COMMAND + 1:
+ case MY_CTRL_Q:
finished = TRUE;
break;
- case MAX_FORM_COMMAND + 2:
+ case MY_CTRL_P:
top_card = prev_card(top_card);
order_cards(top_card, visible_cards);
break;
- case MAX_FORM_COMMAND + 3:
+ case MY_CTRL_N:
top_card = next_card(top_card);
order_cards(top_card, visible_cards);
break;
- case MAX_FORM_COMMAND + 4:
+ case MY_CTRL_W:
+ form_driver(top_card->form, REQ_VALIDATION);
write_data(fname);
break;
+#if defined(KEY_RESIZE) && HAVE_WRESIZE
+ case KEY_RESIZE:
+ /* resizeterm already did "something" reasonable, but it cannot
+ * know much about layout. So let's make it nicer.
+ */
+ panel_wide = COLS - (visible_cards * OFFSET_CARD);
+ panel_high = LINES - (visible_cards * OFFSET_CARD) - 5;
+
+ form_wide = panel_wide - 2;
+ form_high = panel_high - 2;
+
+ y = (visible_cards - 1) * OFFSET_CARD;
+ x = 0;
+
+ show_legend();
+ for (p = all_cards; p != 0; p = p->link) {
+ FIELD **oldf = form_fields(p->form);
+ WINDOW *olds = form_sub(p->form);
+
+ if (!isVisible(p))
+ continue;
+ win = form_win(p->form);
+
+ /* move and resize the card as needed
+ * FIXME: if the windows are shrunk too much, this won't do
+ */
+ mvwin(win, y, x);
+ wresize(win, panel_high, panel_wide);
+
+ /* reconstruct each form. Forms are not resizable, and
+ * there appears to be no good way to reload the text in
+ * a resized window.
+ */
+ werase(win);
+
+ unpost_form(p->form);
+ free_form(p->form);
+
+ p->form = new_form(make_fields(p, form_high, form_wide));
+ set_form_win(p->form, win);
+ set_form_sub(p->form, derwin(win, form_high, form_wide,
+ 1, 1));
+ post_form(p->form);
+
+ free_form_fields(oldf);
+ delwin(olds);
+
+ box(win, 0, 0);
+
+ y -= OFFSET_CARD;
+ x += OFFSET_CARD;
+ }
+ break;
+#endif
default:
beep();
break;
break;
}
}
+#if NO_LEAKS
+ while (all_cards != 0) {
+ FIELD **f;
+
+ p = all_cards;
+ all_cards = all_cards->link;
+
+ if (isVisible(p)) {
+ f = form_fields(p->form);
+
+ unpost_form(p->form); /* ...so we can free it */
+ free_form(p->form); /* this also disconnects the fields */
+
+ free_form_fields(f);
+
+ del_panel(p->panel);
+ }
+ free(p->title);
+ free(p->content);
+ free(p);
+ }
+#endif
+}
+
+static void
+usage(void)
+{
+ static const char *msg[] =
+ {
+ "Usage: view [options] file"
+ ,""
+ ,"Options:"
+ ," -c use color if terminal supports it"
+ };
+ size_t n;
+ for (n = 0; n < SIZEOF(msg); n++)
+ fprintf(stderr, "%s\n", msg[n]);
+ ExitProgram(EXIT_FAILURE);
}
/*******************************************************************************/
{
int n;
+ setlocale(LC_ALL, "");
+
+ while ((n = getopt(argc, argv, "c")) != -1) {
+ switch (n) {
+ case 'c':
+ try_color = TRUE;
+ break;
+ default:
+ usage();
+ }
+ }
+
initscr();
cbreak();
noecho();
- if (argc > 1) {
+ if (try_color) {
+ if (has_colors()) {
+ start_color();
+ init_pair(pair_1, COLOR_WHITE, COLOR_BLUE);
+ init_pair(pair_2, COLOR_WHITE, COLOR_CYAN);
+ bkgd((chtype) COLOR_PAIR(pair_1));
+ } else {
+ try_color = FALSE;
+ }
+ }
+
+ if (optind + 1 == argc) {
for (n = 1; n < argc; n++)
read_data(argv[n]);
if (count_cards() == 0)
endwin();
- return EXIT_SUCCESS;
+ ExitProgram(EXIT_SUCCESS);
}
+#else
+int
+main(void)
+{
+ printf("This program requires the curses form and panel libraries\n");
+ ExitProgram(EXIT_FAILURE);
+}
+#endif
projects / ncurses.git / blobdiff