reorganization: move revstrstr() back to chars.c, and move is_byte()

there too, since they both deal with strings and hence characters


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2286 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -98,11 +98,12 @@ CVS code -
 	  is_blank_wchar(), is_cntrl_mbchar(), is_cntrl_wchar(),
 	  control_mbrep(), control_wrep(), mbwidth(), mb_cur_max(),
 	  make_mbchar(), mbstrnlen(), mbstrcasecmp(), and
-	  mbstrncasecmp(); changes to is_blank_char() (moved to
-	  chars.c), is_cntrl_char() (moved to chars.c), nstricmp()
-	  (renamed nstrcasecmp() and moved to chars.c), nstrnicmp()
-	  (renamed nstrncasecmp() and moved to chars.c), nstristr()
-	  (renamed nstrcasestr() and moved to chars.c), revstristr()
+	  mbstrncasecmp(); changes to is_byte() (moved to chars.c),
+	  is_blank_char() (moved to chars.c), is_cntrl_char() (moved to
+	  chars.c), nstricmp() (renamed nstrcasecmp() and moved to
+	  chars.c), nstrnicmp() (renamed nstrncasecmp() and moved to
+	  chars.c), nstristr() (renamed nstrcasestr() and moved to
+	  chars.c), revstrstr() (moved to chars.c), revstristr()
 	  (renamed revstrcasestr() and moved to chars.c), nstrnlen()
 	  (moved to chars.c), parse_char() (renamed parse_mbchar() and
 	  moved to chars.c), move_left() (renamed move_mbleft() and

src/chars.c

@@ -38,6 +38,13 @@
 #include <wctype.h>
 #endif
 
+/* Return TRUE if the value of c is in byte range, and FALSE
+ * otherwise. */
+bool is_byte(unsigned int c)
+{
+    return (c == (unsigned char)c);
+}
+
 /* This function is equivalent to isalnum(). */
 bool is_alnum_char(unsigned int c)
 {
@@ -596,6 +603,28 @@ const char *nstrcasestr(const char *haystack, const char *needle)
 #endif
 
 #ifndef NANO_SMALL
+/* This function is equivalent to strstr(), except in that it scans the
+ * string in reverse. */
+const char *revstrstr(const char *haystack, const char *needle, const
+	char *rev_start)
+{
+    assert(haystack != NULL && needle != NULL && rev_start != NULL);
+
+    for (; rev_start >= haystack; rev_start--) {
+	const char *r, *q;
+
+	for (r = rev_start, q = needle; *q == *r && *q != '\0'; r++, q++)
+	    ;
+
+	if (*q == '\0')
+	    return rev_start;
+    }
+
+    return NULL;
+}
+
+/* This function is equivalent to strcasestr(), except in that it scans
+ * the string in reverse. */
 const char *revstrcasestr(const char *haystack, const char *needle,
 	const char *rev_start)
 {

src/proto.h

@@ -151,6 +151,7 @@ extern char *homedir;
 /* Functions we want available. */
 
 /* Public functions in chars.c. */
+bool is_byte(unsigned int c);
 bool is_alnum_char(unsigned int c);
 bool is_alnum_mbchar(const char *c);
 #ifdef NANO_WIDE
@@ -525,7 +526,6 @@ int regexec_safe(const regex_t *preg, const char *string, size_t nmatch,
 int regexp_bol_or_eol(const regex_t *preg, const char *string);
 #endif
 int num_of_digits(int n);
-bool is_byte(unsigned int c);
 bool parse_num(const char *str, ssize_t *val);
 void align(char **strp);
 void null_at(char **data, size_t index);

src/utils.c

@@ -67,11 +67,6 @@ int num_of_digits(int n)
     return i;
 }
 
-bool is_byte(unsigned int c)
-{
-    return (c == (unsigned char)c);
-}
-
 /* Read a ssize_t from str, and store it in *val (if val is not NULL).
  * On error, we return FALSE and don't change *val.  Otherwise, we
  * return TRUE. */
@@ -131,26 +126,7 @@ void sunder(char *str)
     }
 }
 
-#ifndef NANO_SMALL
-const char *revstrstr(const char *haystack, const char *needle, const
-	char *rev_start)
-{
-    assert(haystack != NULL && needle != NULL && rev_start != NULL);
-
-    for (; rev_start >= haystack; rev_start--) {
-	const char *r, *q;
-
-	for (r = rev_start, q = needle; *q == *r && *q != '\0'; r++, q++)
-	    ;
-
-	if (*q == '\0')
-	    return rev_start;
-    }
-
-    return NULL;
-}
-
-#ifdef ENABLE_NANORC
+#if !defined(NANO_SMALL) && defined(ENABLE_NANORC)
 #ifndef HAVE_GETLINE
 /* This function is equivalent to getline().  It was adapted from
  * GNU mailutils' getline() function. */
@@ -208,8 +184,7 @@ ssize_t ngetdelim(char **lineptr, size_t *n, int delim, FILE *stream)
     return (c == EOF && (indx - 1) == 0) ? -1 : indx - 1;
 }
 #endif
-#endif /* ENABLE_NANORC */
-#endif /* !NANO_SMALL */
+#endif /* !NANO_SMALL && ENABLE_NANORC */
 
 /* If we are searching backwards, we will find the last match that
  * starts no later than start.  Otherwise we find the first match