miscellaneous bits: make get_next_filename() use an unsigned long, make

num_of_digits() take a size_t instead of a ssize_t, and rename
num_of_digits() to digits()


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2479 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -9,8 +9,8 @@ CVS code -
   load_open_file()
 	- Remove an unneeded clearok(FALSE). (DLR)
   get_next_filename()
-	- Use a long instead of an int for the number prepended to the
-	  filename. (DLR)
+	- Use an unsigned long instead of an int for the number
+	  prepended to the filename. (DLR)
   do_browser()
 	- Don't treat NANO_CANCEL_KEY as NANO_EXIT_KEY anymore, for
 	  consistency. (DLR)
@@ -27,7 +27,7 @@ CVS code -
 	  (DLR)
 - utils.c:
   num_of_digits()
-	- Use a ssize_t instead of an int. (DLR)
+	- Use a size_t instead of an int, and rename to digits(). (DLR)
 - winio.c:
   do_help()
 	- Don't treat NANO_CANCEL_KEY as NANO_EXIT_KEY anymore, for

src/files.c

@@ -378,11 +378,11 @@ int open_file(const char *filename, bool newfie, FILE **f)
  * extension exists, we return "". */
 char *get_next_filename(const char *name)
 {
-    long i = 0;
+    unsigned long i = 0;
     char *buf;
     size_t namelen = strlen(name);
 
-    buf = charalloc(namelen + num_of_digits(LONG_MAX) + 7);
+    buf = charalloc(namelen + digits(ULONG_MAX) + 7);
     strcpy(buf, name);
     strcpy(buf + namelen, ".save");
     namelen += 5;
@@ -392,11 +392,11 @@ char *get_next_filename(const char *name)
 
 	if (stat(buf, &fs) == -1)
 	    return buf;
-	if (i == LONG_MAX)
+	if (i == ULONG_MAX)
 	    break;
 
 	i++;
-	sprintf(buf + namelen, ".%ld", i);
+	sprintf(buf + namelen, ".%lu", i);
     }
 
     /* We get here only if there is no possible save file. */

src/proto.h

@@ -543,7 +543,7 @@ int safe_regexec(const regex_t *preg, const char *string, size_t nmatch,
 #endif
 int regexp_bol_or_eol(const regex_t *preg, const char *string);
 #endif
-int num_of_digits(ssize_t n);
+int digits(size_t n);
 void get_homedir(void);
 bool parse_num(const char *str, ssize_t *val);
 void align(char **strp);

src/utils.c

@@ -54,13 +54,10 @@ int regexp_bol_or_eol(const regex_t *preg, const char *string)
 }
 #endif /* HAVE_REGEX_H */
 
-int num_of_digits(ssize_t n)
+int digits(size_t n)
 {
     int i = 1;
 
-    if (n < 0)
-	n = -n;
-
     while (n > 10) {
 	n /= 10;
 	i++;