New function SB_SkipMultiple().

git-svn-id: svn://svn.cc65.org/cc65/trunk@4358 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/src/common/strbuf.h b/src/common/strbuf.h
index fc904a1d20f0e6eabae7b7d9a0ca61003d4750fc..8e3fc8863ef15b81d8525d328a236943b22a1695 100644 (file)
--- a/src/common/strbuf.h
+++ b/src/common/strbuf.h
@@ -286,6 +286,18 @@ INLINE void SB_Skip (StrBuf* B)
 #  define SB_Skip(B)     do { if ((B)->Index < (B)->Len) ++(B)->Index; } while (0)
 #endif
 
+#if defined(HAVE_INLINE)
+INLINE void SB_SkipMultiple (StrBuf* B, unsigned Count)
+/* Skip a number of characters in the string buffer if this is possible. */
+{
+    if ((B->Index += Count) > B->Len) {
+        B->Index = B->Len;
+    }
+}
+#else
+#  define SB_SkipMultiple(B)   do { if (((B)->Index += (Count)) > (B)->Len) (B)->Index = (B)->Len; } while (0)
+#endif
+
 void SB_Drop (StrBuf* B, unsigned Count);
 /* Drop characters from the end of the string. */