mirror of
https://github.com/Aigor44/ncursesw-morphos.git
synced 2025-01-12 14:54:25 +08:00
4ceb04b5e1
+ fixes for issues found by Coverity: + fix memory leak in safe_sprintf.c + add check for return-value in tty_update.c + correct initialization for -s option in test/view.c + add check for numeric overflow in lib_instr.c + improve error-checking in copywin + add advice in infocmp manpage for termcap users (Debian #698469). + add "-y" option to test/demo_termcap and test/demo_terminfo to demonstrate behavior with/without extended capabilities. + updated termcap manpage to document legacy termcap behavior for matching capability names. + modify name-comparison for tgetstr, etc., to accommodate legacy applications as well as to improve compatbility with BSD 4.2 termcap implementations (Debian #698299) (cf: 980725).
471 lines
10 KiB
C
471 lines
10 KiB
C
/****************************************************************************
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* Copyright (c) 2005-2012,2013 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/*
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* Author: Thomas E. Dickey
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*
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* $Id: demo_termcap.c,v 1.23 2013/01/19 19:30:52 tom Exp $
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*
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* A simple demo of the termcap interface.
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*/
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#define USE_TINFO
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#include <test.priv.h>
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#if HAVE_TGETENT
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#if defined(HAVE_CURSES_DATA_BOOLNAMES) || defined(DECL_CURSES_DATA_BOOLNAMES)
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#define USE_CODE_LISTS 1
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#else
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#define USE_CODE_LISTS 0
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#endif
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#define FCOLS 8
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#define FNAME(type) "%s %-*s = ", #type, FCOLS
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#if USE_CODE_LISTS
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static bool b_opt = FALSE;
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static bool n_opt = FALSE;
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static bool q_opt = FALSE;
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static bool s_opt = FALSE;
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#endif
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static char *d_opt;
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static char *e_opt;
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static char **db_list;
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static int db_item;
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static long total_values;
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#define isCapName(c) (isgraph(c) && strchr("^#=:\\", c) == 0)
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#if NO_LEAKS && USE_CODE_LISTS
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#define MYSCR struct _myscr
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MYSCR {
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MYSCR *next;
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TERMINAL *term;
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};
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static MYSCR *my_screens;
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static void
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save_screen(void)
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{
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MYSCR *obj = malloc(sizeof(MYSCR));
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obj->next = my_screens;
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obj->term = cur_term;
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my_screens = obj;
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}
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#else
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#define save_screen() /* nothing */
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#endif
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static char *
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make_dbitem(char *p, char *q)
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{
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char *result = malloc(strlen(e_opt) + 2 + (size_t) (p - q));
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sprintf(result, "%s=%.*s", e_opt, (int) (p - q), q);
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return result;
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}
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static void
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make_dblist(void)
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{
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if (d_opt && e_opt) {
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int pass;
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for (pass = 0; pass < 2; ++pass) {
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char *p, *q;
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size_t count = 0;
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for (p = q = d_opt; *p != '\0'; ++p) {
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if (*p == ':') {
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if (p != q + 1) {
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if (pass) {
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db_list[count] = make_dbitem(p, q);
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}
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count++;
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}
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q = p + 1;
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}
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}
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if (p != q + 1) {
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if (pass) {
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db_list[count] = make_dbitem(p, q);
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}
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count++;
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}
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if (!pass) {
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db_list = typeCalloc(char *, count + 1);
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}
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}
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}
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}
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static char *
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next_dbitem(void)
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{
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char *result = 0;
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if (db_list) {
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if ((result = db_list[db_item]) == 0) {
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db_item = 0;
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result = db_list[0];
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} else {
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db_item++;
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}
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}
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printf("** %s\n", result);
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return result;
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}
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static void
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free_dblist(void)
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{
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if (db_list) {
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int n;
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for (n = 0; db_list[n]; ++n)
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free(db_list[n]);
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free(db_list);
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db_list = 0;
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}
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}
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static void
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dumpit(NCURSES_CONST char *cap)
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{
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/*
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* One of the limitations of the termcap interface is that the library
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* cannot determine the size of the buffer passed via tgetstr(), nor the
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* amount of space remaining. This demo simply reuses the whole buffer
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* for each call; a normal termcap application would try to use the buffer
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* to hold all of the strings extracted from the terminal entry.
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*/
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char area[1024], *ap = area;
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char *str;
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int num;
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if ((str = tgetstr(cap, &ap)) != 0) {
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total_values++;
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if (!q_opt) {
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/*
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* Note that the strings returned are mostly terminfo format, since
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* ncurses does not convert except for a handful of special cases.
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*/
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printf(FNAME(str), cap);
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while (*str != 0) {
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int ch = UChar(*str++);
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switch (ch) {
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case '\177':
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fputs("^?", stdout);
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break;
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case '\033':
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fputs("\\E", stdout);
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break;
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case '\b':
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fputs("\\b", stdout);
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break;
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case '\f':
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fputs("\\f", stdout);
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break;
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case '\n':
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fputs("\\n", stdout);
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break;
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case '\r':
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fputs("\\r", stdout);
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break;
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case ' ':
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fputs("\\s", stdout);
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break;
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case '\t':
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fputs("\\t", stdout);
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break;
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case '^':
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fputs("\\^", stdout);
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break;
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case ':':
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fputs("\\072", stdout);
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break;
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case '\\':
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fputs("\\\\", stdout);
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break;
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default:
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if (isgraph(ch))
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fputc(ch, stdout);
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else if (ch < 32)
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printf("^%c", ch + '@');
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else
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printf("\\%03o", ch);
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break;
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}
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}
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printf("\n");
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}
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} else if ((num = tgetnum(cap)) >= 0) {
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total_values++;
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if (!q_opt) {
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printf(FNAME(num), cap);
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printf(" %d\n", num);
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}
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} else if (tgetflag(cap) > 0) {
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++total_values;
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if (!q_opt) {
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printf(FNAME(flg), cap);
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printf("%s\n", "true");
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}
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}
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if (!q_opt)
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fflush(stdout);
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}
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static void
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brute_force(const char *name)
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{
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char buffer[1024];
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if (db_list) {
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putenv(next_dbitem());
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}
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printf("Terminal type %s\n", name);
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if (tgetent(buffer, name) >= 0) {
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char cap[3];
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int c1, c2;
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cap[2] = 0;
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for (c1 = 0; c1 < 256; ++c1) {
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cap[0] = (char) c1;
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if (isCapName(c1)) {
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for (c2 = 0; c2 < 256; ++c2) {
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cap[1] = (char) c2;
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if (isCapName(c2)) {
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dumpit(cap);
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}
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}
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}
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}
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}
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}
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#if USE_CODE_LISTS
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static void
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demo_termcap(NCURSES_CONST char *name)
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{
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unsigned n;
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NCURSES_CONST char *cap;
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if (db_list) {
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putenv(next_dbitem());
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}
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printf("Terminal type \"%s\"\n", name);
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#if HAVE_SETUPTERM
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setupterm(name, 1, (int *) 0);
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#else
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setterm(name);
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#endif
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save_screen();
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if (b_opt) {
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for (n = 0;; ++n) {
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cap = boolcodes[n];
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if (cap == 0)
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break;
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dumpit(cap);
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}
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}
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if (n_opt) {
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for (n = 0;; ++n) {
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cap = numcodes[n];
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if (cap == 0)
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break;
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dumpit(cap);
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}
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}
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if (s_opt) {
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for (n = 0;; ++n) {
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cap = strcodes[n];
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if (cap == 0)
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break;
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dumpit(cap);
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}
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}
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}
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static void
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usage(void)
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{
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static const char *msg[] =
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{
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"Usage: demo_termcap [options] [terminal]",
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"",
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"If no options are given, print all (boolean, numeric, string)",
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"capabilities for the given terminal, using short names.",
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"",
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"Options:",
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" -a try all names, print capabilities found",
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" -b print boolean-capabilities",
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" -d LIST colon-separated list of databases to use",
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" -e NAME environment variable to set with -d option",
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" -n print numeric-capabilities",
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" -q quiet (prints only counts)",
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" -r COUNT repeat for given count",
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" -s print string-capabilities",
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#ifdef NCURSES_VERSION
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" -y disable extended capabilities",
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#endif
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};
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unsigned n;
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for (n = 0; n < SIZEOF(msg); ++n) {
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fprintf(stderr, "%s\n", msg[n]);
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}
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ExitProgram(EXIT_FAILURE);
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}
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#endif
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int
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main(int argc, char *argv[])
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{
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int n;
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char *name;
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bool a_opt = FALSE;
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#if USE_CODE_LISTS
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int repeat;
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int r_opt = 1;
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while ((n = getopt(argc, argv, "abd:e:nqr:sy")) != -1) {
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switch (n) {
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case 'a':
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a_opt = TRUE;
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break;
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case 'b':
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b_opt = TRUE;
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break;
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case 'd':
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d_opt = optarg;
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break;
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case 'e':
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e_opt = optarg;
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break;
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case 'n':
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n_opt = TRUE;
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break;
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case 'q':
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q_opt = TRUE;
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break;
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case 'r':
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if ((r_opt = atoi(optarg)) <= 0)
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usage();
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break;
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case 's':
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s_opt = TRUE;
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break;
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#ifdef NCURSES_VERSION
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case 'y':
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use_extended_names(FALSE);
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break;
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#endif
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default:
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usage();
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break;
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}
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}
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if (!(b_opt || n_opt || s_opt)) {
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b_opt = TRUE;
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n_opt = TRUE;
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s_opt = TRUE;
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}
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#else
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a_opt = TRUE;
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#endif
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make_dblist();
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if (a_opt) {
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if (optind < argc) {
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for (n = optind; n < argc; ++n) {
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brute_force(argv[n]);
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}
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} else if ((name = getenv("TERM")) != 0) {
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brute_force(name);
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} else {
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static char dumb[] = "dumb";
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brute_force(dumb);
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}
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}
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#if USE_CODE_LISTS
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else {
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for (repeat = 0; repeat < r_opt; ++repeat) {
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if (optind < argc) {
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for (n = optind; n < argc; ++n) {
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demo_termcap(argv[n]);
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}
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} else if ((name = getenv("TERM")) != 0) {
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demo_termcap(name);
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} else {
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static char dumb[] = "dumb";
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demo_termcap(dumb);
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}
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}
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#if NO_LEAKS
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/*
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* ncurses' tgetent() interface caches some entries and its no-leaks
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* code discards those. The calls to setupterm() on the other hand
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* are not cached, and each call allocates a chunk of memory, even
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* if the same terminal type is requested repeatedly.
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*/
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while (my_screens != 0) {
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MYSCR *next = my_screens->next;
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del_curterm(my_screens->term);
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free(my_screens);
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my_screens = next;
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}
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#endif
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}
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#endif /* USE_CODE_LISTS */
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printf("%ld values\n", total_values);
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free_dblist();
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ExitProgram(EXIT_SUCCESS);
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}
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#else
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int
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main(int argc GCC_UNUSED,
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char *argv[]GCC_UNUSED)
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{
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printf("This program requires termcap\n");
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ExitProgram(EXIT_FAILURE);
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}
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#endif
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