ncurses 5.9 - patch 20131012

[ncurses.git] / progs / tabs.c

diff --git a/progs/tabs.c b/progs/tabs.c
index bded0b04b259812db51be662d6305ac4a7dbc00c..7ed3007549d8ac7ea2d6bba11481b5e3c6bb0cf4 100644 (file)
--- a/progs/tabs.c
+++ b/progs/tabs.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 2008-2011,2012 Free Software Foundation, Inc.              *
+ * Copyright (c) 2008-2012,2013 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            *
@@ -37,10 +37,11 @@
 #define USE_LIBTINFO
 #include <progs.priv.h>
 
-MODULE_ID("$Id: tabs.c,v 1.25 2012/11/18 01:21:47 tom Exp $")
+MODULE_ID("$Id: tabs.c,v 1.34 2013/06/11 08:18:27 tom Exp $")
 
 static void usage(void) GCC_NORETURN;
 
+static char *prg_name;
 static int max_cols;
 
 static void
@@ -101,8 +102,8 @@ decode_tabs(const char *tab_list)
            result[n] = value + prior;
            if (n > 0 && result[n] <= result[n - 1]) {
                fprintf(stderr,
-                       "tab-stops are not in increasing order: %d %d\n",
-                       value, result[n - 1]);
+                       "%s: tab-stops are not in increasing order: %d %d\n",
+                       prg_name, value, result[n - 1]);
                free(result);
                result = 0;
                break;
@@ -122,6 +123,7 @@ decode_tabs(const char *tab_list)
         */
        if ((n == 0) && (value > 0)) {
            int step = value;
+           value = 1;
            while (n < max_cols - 1) {
                result[n++] = value;
                value += step;
@@ -293,7 +295,7 @@ add_to_tab_list(char **append, const char *value)
  * Check for illegal characters in the tab-list.
  */
 static bool
-legal_tab_list(const char *program, const char *tab_list)
+legal_tab_list(const char *tab_list)
 {
     bool result = TRUE;
 
@@ -305,22 +307,34 @@ legal_tab_list(const char *program, const char *tab_list)
                if (!(isdigit(ch) || ch == ',' || ch == '+')) {
                    fprintf(stderr,
                            "%s: unexpected character found '%c'\n",
-                           program, ch);
+                           prg_name, ch);
                    result = FALSE;
                    break;
                }
            }
        } else {
-           fprintf(stderr, "%s: trailing comma found '%s'\n", program, tab_list);
+           fprintf(stderr, "%s: trailing comma found '%s'\n", prg_name, tab_list);
            result = FALSE;
        }
     } else {
-       fprintf(stderr, "%s: no tab-list given\n", program);
+       fprintf(stderr, "%s: no tab-list given\n", prg_name);
        result = FALSE;
     }
     return result;
 }
 
+static char *
+skip_list(char *value)
+{
+    while (*value != '\0' &&
+          (isdigit(UChar(*value)) ||
+           isspace(UChar(*value)) ||
+           strchr("+,", UChar(*value)) != 0)) {
+       ++value;
+    }
+    return value;
+}
+
 static void
 usage(void)
 {
@@ -343,6 +357,7 @@ usage(void)
        ,"  -s       SNOBOL"
        ,"  -u       UNIVAC 1100 Assembler"
        ,"  -T name  use terminal type 'name'"
+       ,"  -V       print version"
        ,""
        ,"A tabstop-list is an ordered list of column numbers, e.g., 1,11,21"
        ,"or 1,+10,+10 which is the same."
@@ -367,6 +382,8 @@ main(int argc, char *argv[])
     char *append = 0;
     const char *tab_list = 0;
 
+    prg_name = _nc_rootname(argv[0]);
+
     if ((term_name = getenv("TERM")) == 0)
        term_name = "ansi+tabs";
 
@@ -378,23 +395,25 @@ main(int argc, char *argv[])
            while ((ch = *++option) != '\0') {
                switch (ch) {
                case 'a':
-                   switch (*option) {
+                   switch (*++option) {
+                   default:
                    case '\0':
                        tab_list = "1,10,16,36,72";
+                       option--;
                        /* Assembler, IBM S/370, first format */
                        break;
                    case '2':
                        tab_list = "1,10,16,40,72";
                        /* Assembler, IBM S/370, second format */
                        break;
-                   default:
-                       usage();
                    }
                    break;
                case 'c':
-                   switch (*option) {
+                   switch (*++option) {
+                   default:
                    case '\0':
                        tab_list = "1,8,12,16,20,55";
+                       option--;
                        /* COBOL, normal format */
                        break;
                    case '2':
@@ -405,8 +424,6 @@ main(int argc, char *argv[])
                        tab_list = "1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67";
                        /* COBOL compact format extended */
                        break;
-                   default:
-                       usage();
                    }
                    break;
                case 'd':       /* ncurses extension */
@@ -437,17 +454,22 @@ main(int argc, char *argv[])
                        term_name = option;
                    } else {
                        term_name = argv[n++];
+                       option--;
                    }
                    option += ((int) strlen(option)) - 1;
                    continue;
+               case 'V':
+                   puts(curses_version());
+                   ExitProgram(EXIT_SUCCESS);
                default:
                    if (isdigit(UChar(*option))) {
-                       tab_list = option;
-                       ++n;
+                       char *copy = strdup(option);
+                       *skip_list(copy) = '\0';
+                       tab_list = copy;
+                       option = skip_list(option) - 1;
                    } else {
                        usage();
                    }
-                   option += ((int) strlen(option)) - 1;
                    break;
                }
            }
@@ -491,12 +513,12 @@ main(int argc, char *argv[])
     if (!VALID_STRING(clear_all_tabs)) {
        fprintf(stderr,
                "%s: terminal type '%s' cannot reset tabs\n",
-               argv[0], term_name);
+               prg_name, term_name);
     } else if (!VALID_STRING(set_tab)) {
        fprintf(stderr,
                "%s: terminal type '%s' cannot set tabs\n",
-               argv[0], term_name);
-    } else if (legal_tab_list(argv[0], tab_list)) {
+               prg_name, term_name);
+    } else if (legal_tab_list(tab_list)) {
        int *list = decode_tabs(tab_list);
 
        if (!no_op)