Initial revision

lang/cem/libcc.ansi/stdio/tmpnam.c

@@ -0,0 +1,28 @@
+/*
+ * tmpnam.c - create a unique filename
+ */
+/* $Header$ */
+
+#include	<stdio.h>
+#include	<string.h>
+#include	"loc_incl.h"
+
+unsigned int getpid(void);
+
+char *
+tmpnam(char *s) {
+	static char name_buffer[L_tmpnam] = "/tmp/tmp.";
+	static unsigned long count = 0;
+	static char *name = NULL;
+
+	if (!name) { 
+		name = name_buffer + strlen(name_buffer);
+		name = i_compute(getpid(), 10, name,  5);
+		*name++ = '.';
+		*name++ = '\0';
+	}
+	if (++count > TMP_MAX) count = 1;	/* wrap-around */
+	*i_compute(count, 10, name, 3) = '\0';
+	if (s) return strcpy(s, name_buffer);
+	else return name_buffer;
+}