ncurses 6.4 - patch 20240420

[ncurses.git] / test / demo_termcap.c

diff --git a/test/demo_termcap.c b/test/demo_termcap.c
index 666f7a2e697b495b874ca8f2d65c39d34e349710..6e2aba7006798265886ac215f5642da343b72107 100644 (file)
--- a/test/demo_termcap.c
+++ b/test/demo_termcap.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 2005-2017,2019 Free Software Foundation, Inc.              *
+ * Copyright 2019-2022,2023 Thomas E. Dickey                                *
+ * Copyright 2005-2016,2017 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            *
@@ -29,7 +30,7 @@
 /*
  * Author: Thomas E. Dickey
  *
- * $Id: demo_termcap.c,v 1.58 2019/08/24 21:47:19 tom Exp $
+ * $Id: demo_termcap.c,v 1.65 2023/05/27 20:13:10 tom Exp $
  *
  * A simple demo of the termcap interface.
  */
@@ -54,7 +55,7 @@
 #endif
 #endif
 
-static void failed(const char *) GCC_NORETURN;
+static GCC_NORETURN void failed(const char *);
 
 static void
 failed(const char *msg)
@@ -104,7 +105,7 @@ static long total_s_values;
 #define EachCapName(n) n = 33; n < 127; ++n
 
 static char *
-make_dbitem(char *p, char *q)
+make_dbitem(const char *const p, const char *const q)
 {
     size_t need = strlen(e_opt) + 2 + (size_t) (p - q);
     char *result = malloc(need);
@@ -403,7 +404,8 @@ typedef enum {
 static void
 parse_description(const char *input_name)
 {
-    static char empty[1];
+    static char empty[1] =
+    {0};
 
     FILE *fp;
     struct stat sb;
@@ -436,11 +438,13 @@ parse_description(const char *input_name)
        failed("cannot allocate memory for input-file");
     }
 
-    if ((fp = fopen(input_name, "r")) == 0)
+    if ((fp = fopen(input_name, "r")) == 0) {
        failed("cannot open input-file");
-    len = fread(my_blob, sizeof(char), (size_t) sb.st_size, fp);
-    my_blob[sb.st_size] = '\0';
-    fclose(fp);
+    } else {
+       len = fread(my_blob, sizeof(char), (size_t) sb.st_size, fp);
+       my_blob[sb.st_size] = '\0';
+       fclose(fp);
+    }
 
     /*
      * First, get rid of comments and escaped newlines, as well as repeated
@@ -737,40 +741,45 @@ free_code_list(char **list)
 #endif /* USE_CODE_LISTS */
 
 static void
-usage(void)
+usage(int ok)
 {
     static const char *msg[] =
     {
-       "Usage: demo_termcap [options] [terminal]",
-       "",
-       "If no options are given, print all (boolean, numeric, string)",
-       "capabilities for the given terminal, using short names.",
-       "",
-       "Options:",
-       " -a       try all names, print capabilities found",
-       " -b       print boolean-capabilities",
-       " -d LIST  colon-separated list of databases to use",
-       " -e NAME  environment variable to set with -d option",
-       " -i NAME  terminal description to use as names for \"-a\" option, etc.",
-       " -n       print numeric-capabilities",
-       " -q       quiet (prints only counts)",
-       " -r COUNT repeat for given count",
-       " -s       print string-capabilities",
-       " -v       print termcap-variables",
+       "Usage: demo_termcap [options] [terminal]"
+       ,""
+       ,"If no options are given, print all (boolean, numeric, string)"
+       ,"capabilities for the given terminal, using short names."
+       ,""
+       ,USAGE_COMMON
+       ,"Options:"
+       ," -a       try all names, print capabilities found"
+       ," -b       print boolean-capabilities"
+       ," -d LIST  colon-separated list of databases to use"
+       ," -e NAME  environment variable to set with -d option"
+       ," -i NAME  terminal description to use as names for \"-a\" option, etc."
+       ," -n       print numeric-capabilities"
+       ," -q       quiet (prints only counts)"
+       ," -r COUNT repeat for given count"
+       ," -s       print string-capabilities"
+       ," -v       print termcap-variables"
 #ifdef NCURSES_VERSION
-       " -x       print extended capabilities",
+       ," -x       print extended capabilities"
 #endif
     };
     unsigned n;
     for (n = 0; n < SIZEOF(msg); ++n) {
        fprintf(stderr, "%s\n", msg[n]);
     }
-    ExitProgram(EXIT_FAILURE);
+    ExitProgram(ok ? EXIT_SUCCESS : EXIT_FAILURE);
 }
+/* *INDENT-OFF* */
+VERSION_COMMON()
+/* *INDENT-ON* */
 
 int
 main(int argc, char *argv[])
 {
+    int ch;
     int n;
     char *name;
     bool a_opt = FALSE;
@@ -782,8 +791,8 @@ main(int argc, char *argv[])
     int repeat;
     int r_opt = 1;
 
-    while ((n = getopt(argc, argv, "abd:e:i:nqr:svxy")) != -1) {
-       switch (n) {
+    while ((ch = getopt(argc, argv, OPTS_COMMON "abd:e:i:nqr:svxy")) != -1) {
+       switch (ch) {
        case 'a':
            a_opt = TRUE;
            break;
@@ -807,7 +816,7 @@ main(int argc, char *argv[])
            break;
        case 'r':
            if ((r_opt = atoi(optarg)) <= 0)
-               usage();
+               usage(FALSE);
            break;
        case 's':
            s_opt = TRUE;
@@ -828,9 +837,12 @@ main(int argc, char *argv[])
            break;
 #endif
 #endif
+       case OPTS_VERSION:
+           show_version(argv);
+           ExitProgram(EXIT_SUCCESS);
        default:
-           usage();
-           break;
+           usage(ch == OPTS_USAGE);
+           /* NOTREACHED */
        }
     }
 
@@ -914,8 +926,7 @@ main(int argc, char *argv[])
 
 #else
 int
-main(int argc GCC_UNUSED,
-     char *argv[]GCC_UNUSED)
+main(void)
 {
     failed("This program requires termcap");
 }