move endofname() to libbb

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

include/libbb.h

@@ -386,6 +386,7 @@ char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC;
 const char *bb_basename(const char *name) FAST_FUNC;
 /* NB: can violate const-ness (similarly to strchr) */
 char *last_char_is(const char *s, int c) FAST_FUNC;
+const char* endofname(const char *name) FAST_FUNC;
 
 void ndelay_on(int fd) FAST_FUNC;
 void ndelay_off(int fd) FAST_FUNC;

libbb/endofname.c

@@ -0,0 +1,26 @@
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 2013 Denys Vlasenko
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+
+//kbuild:lib-y += endofname.o
+
+#include "libbb.h"
+
+#define is_name(c)      ((c) == '_' || isalpha((unsigned char)(c)))
+#define is_in_name(c)   ((c) == '_' || isalnum((unsigned char)(c)))
+
+const char* FAST_FUNC
+endofname(const char *name)
+{
+	if (!is_name(*name))
+		return name;
+	while (*++name) {
+		if (!is_in_name(*name))
+			break;
+	}
+	return name;
+}

shell/ash.c

@@ -385,6 +385,9 @@ static void trace_vprintf(const char *fmt, va_list va);
 /* ============ Utility functions */
 #define xbarrier() do { __asm__ __volatile__ ("": : :"memory"); } while (0)
 
+#define is_name(c)      ((c) == '_' || isalpha((unsigned char)(c)))
+#define is_in_name(c)   ((c) == '_' || isalnum((unsigned char)(c)))
+
 static int isdigit_str9(const char *str)
 {
 	int maxlen = 9 + 1; /* max 9 digits: 999999999 */
@@ -2008,27 +2011,6 @@ getoptsreset(const char *value)
 }
 #endif
 
-/* math.h has these, otherwise define our private copies */
-#if !ENABLE_SH_MATH_SUPPORT
-#define is_name(c)      ((c) == '_' || isalpha((unsigned char)(c)))
-#define is_in_name(c)   ((c) == '_' || isalnum((unsigned char)(c)))
-/*
- * Return the pointer to the first char which is not part of a legal variable name
- * (a letter or underscore followed by letters, underscores, and digits).
- */
-static const char*
-endofname(const char *name)
-{
-	if (!is_name(*name))
-		return name;
-	while (*++name) {
-		if (!is_in_name(*name))
-			break;
-	}
-	return name;
-}
-#endif
-
 /*
  * Compares two strings up to the first = or '\0'.  The first
  * string must be terminated by '='; the second may be terminated by

shell/math.c

@@ -494,18 +494,6 @@ static const char op_tokens[] ALIGN1 = {
 };
 #define ptr_to_rparen (&op_tokens[sizeof(op_tokens)-7])
 
-const char* FAST_FUNC
-endofname(const char *name)
-{
-	if (!is_name(*name))
-		return name;
-	while (*++name) {
-		if (!is_in_name(*name))
-			break;
-	}
-	return name;
-}
-
 static arith_t FAST_FUNC
 evaluate_string(arith_state_t *math_state, const char *expr)
 {

shell/math.h

@@ -73,11 +73,6 @@ typedef long arith_t;
 #define strto_arith_t strtoul
 #endif
 
-/* ash's and hush's endofname is the same, so... */
-# define is_name(c)      ((c) == '_' || isalpha((unsigned char)(c)))
-# define is_in_name(c)   ((c) == '_' || isalnum((unsigned char)(c)))
-const char* FAST_FUNC endofname(const char *name);
-
 typedef const char* FAST_FUNC (*arith_var_lookup_t)(const char *name);
 typedef void        FAST_FUNC (*arith_var_set_t)(const char *name, const char *val);
 //typedef const char* FAST_FUNC (*arith_var_endofname_t)(const char *name);