ncurses 6.4 - patch 20240414

[ncurses.git] / test / view.c

diff --git a/test/view.c b/test/view.c
index eb7786e1a36d171b6d78f6f5fe8ad227f18cb487..72e0cfbb6b9768ed43227a977c799d0a68c45230 100644 (file)
--- a/test/view.c
+++ b/test/view.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998-2017,2019 Free Software Foundation, Inc.              *
+ * Copyright 2019-2021,2022 Thomas E. Dickey                                *
+ * Copyright 1998-2016,2017 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            *
@@ -51,7 +52,7 @@
  * scroll operation worked, and the refresh() code only had to do a
  * partial repaint.
  *
- * $Id: view.c,v 1.137 2019/12/07 19:03:07 tom Exp $
+ * $Id: view.c,v 1.145 2022/12/04 00:40:11 tom Exp $
  */
 
 #include <test.priv.h>
@@ -61,7 +62,7 @@
 #include <sys/stat.h>
 #include <time.h>
 
-static void finish(int sig) GCC_NORETURN;
+static GCC_NORETURN void finish(int sig);
 
 #define my_pair 1
 
@@ -77,9 +78,7 @@ static int num_lines;
 static bool n_option = FALSE;
 #endif
 
-static void usage(void) GCC_NORETURN;
-
-static void
+static GCC_NORETURN void
 failed(const char *msg)
 {
     endwin();
@@ -91,12 +90,10 @@ static int
 ch_len(NCURSES_CH_T *src)
 {
     int result = 0;
-#if USE_WIDEC_SUPPORT
-    int count;
-#endif
 
 #if USE_WIDEC_SUPPORT
     for (;;) {
+       int count;
        TEST_CCHAR(src, count, {
            int len = wcwidth(test_wch[0]);
            result += (len > 0) ? len : 1;
@@ -135,7 +132,6 @@ show_all(const char *tag)
     int i;
     int digits;
     char temp[BUFSIZ];
-    NCURSES_CH_T *s;
     time_t this_time;
 
     for (digits = 1, i = num_lines; i > 0; i /= 10) {
@@ -160,8 +156,10 @@ show_all(const char *tag)
 
     scrollok(stdscr, FALSE);   /* prevent screen from moving */
     for (i = 1; i < LINES; i++) {
+       NCURSES_CH_T *s;
        int len;
        int actual = (int) (lptr + i - vec_lines);
+
        if (actual > num_lines) {
            if (i < LINES - 1) {
                int y, x;
@@ -188,8 +186,11 @@ show_all(const char *tag)
             */
            {
                int j;
-               int width = 1, count;
+               int width = 1;
+
                for (j = actual = 0; j < shift; ++j) {
+                   int count;
+
                    TEST_CCHAR(s + j, count, {
                        width = wcwidth(test_wch[0]);
                    }
@@ -256,9 +257,12 @@ read_file(const char *filename)
     }
 
     len = fread(my_blob, sizeof(char), (size_t) sb.st_size, fp);
-    my_blob[sb.st_size] = '\0';
     fclose(fp);
 
+    if (len > (size_t) sb.st_size)
+       len = (size_t) sb.st_size;
+    my_blob[len] = '\0';
+
     for (pass = 0; pass < 2; ++pass) {
        char *base = my_blob;
        k = 0;
@@ -272,12 +276,19 @@ read_file(const char *filename)
                ++k;
            }
        }
+       if (base != (my_blob + j)) {
+           if (pass)
+               my_vec[k] = base;
+           ++k;
+       }
        num_lines = k;
-       if (base != (my_blob + j))
-           ++num_lines;
-       if (!pass &&
-           ((my_vec = typeCalloc(char *, (size_t) k + 2)) == 0)) {
-           failed("cannot allocate line-vector #1");
+       if (pass == 0) {
+           if (((my_vec = typeCalloc(char *, (size_t) k + 2)) == 0)) {
+               failed("cannot allocate line-vector #1");
+           }
+       } else {
+           if (my_vec[0] == NULL)
+               my_vec[0] = my_blob;
        }
     }
 
@@ -365,13 +376,14 @@ read_file(const char *filename)
     free(my_blob);
 }
 
-static void
-usage(void)
+static GCC_NORETURN void
+usage(int ok)
 {
     static const char *msg[] =
     {
        "Usage: view [options] file"
        ,""
+       ,USAGE_COMMON
        ,"Options:"
        ," -c       use color if terminal supports it"
        ," -i       ignore INT, QUIT, TERM signals"
@@ -387,8 +399,11 @@ usage(void)
     size_t 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[])
@@ -418,6 +433,7 @@ main(int argc, char *argv[])
        0
     };
 
+    int ch;
     int i;
     int my_delay = 0;
     NCURSES_CH_T **olptr;
@@ -430,8 +446,8 @@ main(int argc, char *argv[])
 
     setlocale(LC_ALL, "");
 
-    while ((i = getopt(argc, argv, "cinstT:")) != -1) {
-       switch (i) {
+    while ((ch = getopt(argc, argv, OPTS_COMMON "cinstT:")) != -1) {
+       switch (ch) {
        case 'c':
            try_color = TRUE;
            break;
@@ -452,7 +468,7 @@ main(int argc, char *argv[])
                char *next = 0;
                int tvalue = (int) strtol(optarg, &next, 0);
                if (tvalue < 0 || (next != 0 && *next != 0))
-                   usage();
+                   usage(FALSE);
                curses_trace((unsigned) tvalue);
            }
            break;
@@ -460,12 +476,16 @@ main(int argc, char *argv[])
            curses_trace(TRACE_CALLS);
            break;
 #endif
+       case OPTS_VERSION:
+           show_version(argv);
+           ExitProgram(EXIT_SUCCESS);
        default:
-           usage();
+           usage(ch == OPTS_USAGE);
+           /* NOTREACHED */
        }
     }
     if (optind + 1 != argc)
-       usage();
+       usage(FALSE);
 
     InitAndCatch(initscr(), ignore_sigs ? SIG_IGN : finish);
     keypad(stdscr, TRUE);      /* enable keyboard mapping */