X-Git-Url: http://ncurses.scripts.mit.edu/?a=blobdiff_plain;ds=sidebyside;f=ncurses%2Ftrace%2Flib_trace.c;h=f16fa15324e0974cd1ee5dbfb64b717f7989fd1c;hb=45291421bee33c79ffb4c8f0e1b67ca5cc262114;hp=519a5ca90dcda6d4bb69b9719624255a8e577561;hpb=5da4544722decdeb2bfd0c7c4581af0ea62148f9;p=ncurses.git

diff --git a/ncurses/trace/lib_trace.c b/ncurses/trace/lib_trace.c
index 519a5ca9..f16fa153 100644
--- a/ncurses/trace/lib_trace.c
+++ b/ncurses/trace/lib_trace.c
@@ -47,7 +47,7 @@
 
 #include <ctype.h>
 
-MODULE_ID("$Id: lib_trace.c,v 1.87 2018/06/24 00:06:37 tom Exp $")
+MODULE_ID("$Id: lib_trace.c,v 1.89 2018/12/16 01:05:30 tom Exp $")
 
 NCURSES_EXPORT_VAR(unsigned) _nc_tracing = 0; /* always define this */
 
@@ -308,6 +308,38 @@ _nc_retrace_win(WINDOW *code)
     return code;
 }
 
+NCURSES_EXPORT(char *)
+_nc_fmt_funcptr(char *target, const char *source, size_t size)
+{
+    size_t n;
+    char *dst = target;
+    bool leading = TRUE;
+
+    union {
+	int value;
+	char bytes[sizeof(int)];
+    } byteorder;
+
+    byteorder.value = 0x1234;
+
+    *dst++ = '0';
+    *dst++ = 'x';
+
+    for (n = 0; n < size; ++n) {
+	unsigned ch = ((byteorder.bytes[0] == 0x34)
+		       ? UChar(source[size - n - 1])
+		       : UChar(source[n]));
+	if (ch != 0 || (n + 1) >= size)
+	    leading = FALSE;
+	if (!leading) {
+	    sprintf(dst, "%02x", ch & 0xff);
+	    dst += 2;
+	}
+    }
+    *dst = '\0';
+    return target;
+}
+
 #if USE_REENTRANT
 /*
  * Check if the given trace-mask is enabled.