Add a test utility function, copy_reference_file simply coping

a sample file to the current directory of a running test.
A uudecode filter test will use it for its new test.

TODO: make a symbolic link file insted of copying a sample file.
Historically, libarchive cannot handle uuencoded files when
libarchive's test suit was made. Now libarchive can handle it
directly by uudecode filter, I think, we can reduce copying
sample files to the directory test program expects they are
on an isolated directory for their test.

cat/test/main.c

@@ -2203,6 +2203,29 @@ extract_reference_file(const char *name)
 	fclose(in);
 }
 
+void
+copy_reference_file(const char *name)
+{
+	char buff[1024];
+	FILE *in, *out;
+	size_t rbytes;
+
+	sprintf(buff, "%s/%s", refdir, name);
+	in = fopen(buff, "rb");
+	failure("Couldn't open reference file %s", buff);
+	assert(in != NULL);
+	if (in == NULL)
+		return;
+	/* Now, decode the rest and write it. */
+	/* Not a lot of error checking here; the input better be right. */
+	out = fopen(name, "wb");
+	while ((rbytes = fread(buff, 1, sizeof(buff), in)) > 0) {
+		fwrite(buff, 1, rbytes, out);
+	}
+	fclose(out);
+	fclose(in);
+}
+
 int
 is_LargeInode(const char *file)
 {

cat/test/test.h

@@ -305,6 +305,8 @@ char *slurpfile(size_t *, const char *fmt, ...);
 
 /* Extracts named reference file to the current directory. */
 void extract_reference_file(const char *);
+/* Copies named reference file to the current directory. */
+void copy_reference_file(const char *);
 
 /* Path to working directory for current test */
 extern const char *testworkdir;

cpio/test/main.c

@@ -2203,6 +2203,29 @@ extract_reference_file(const char *name)
 	fclose(in);
 }
 
+void
+copy_reference_file(const char *name)
+{
+	char buff[1024];
+	FILE *in, *out;
+	size_t rbytes;
+
+	sprintf(buff, "%s/%s", refdir, name);
+	in = fopen(buff, "rb");
+	failure("Couldn't open reference file %s", buff);
+	assert(in != NULL);
+	if (in == NULL)
+		return;
+	/* Now, decode the rest and write it. */
+	/* Not a lot of error checking here; the input better be right. */
+	out = fopen(name, "wb");
+	while ((rbytes = fread(buff, 1, sizeof(buff), in)) > 0) {
+		fwrite(buff, 1, rbytes, out);
+	}
+	fclose(out);
+	fclose(in);
+}
+
 int
 is_LargeInode(const char *file)
 {

cpio/test/test.h

@@ -303,6 +303,8 @@ char *slurpfile(size_t *, const char *fmt, ...);
 
 /* Extracts named reference file to the current directory. */
 void extract_reference_file(const char *);
+/* Copies named reference file to the current directory. */
+void copy_reference_file(const char *);
 
 /* Path to working directory for current test */
 extern const char *testworkdir;

libarchive/test/main.c

@@ -2231,6 +2231,29 @@ extract_reference_file(const char *name)
 	fclose(in);
 }
 
+void
+copy_reference_file(const char *name)
+{
+	char buff[1024];
+	FILE *in, *out;
+	size_t rbytes;
+
+	sprintf(buff, "%s/%s", refdir, name);
+	in = fopen(buff, "rb");
+	failure("Couldn't open reference file %s", buff);
+	assert(in != NULL);
+	if (in == NULL)
+		return;
+	/* Now, decode the rest and write it. */
+	/* Not a lot of error checking here; the input better be right. */
+	out = fopen(name, "wb");
+	while ((rbytes = fread(buff, 1, sizeof(buff), in)) > 0) {
+		fwrite(buff, 1, rbytes, out);
+	}
+	fclose(out);
+	fclose(in);
+}
+
 int
 is_LargeInode(const char *file)
 {

libarchive/test/test.h

@@ -308,6 +308,8 @@ void dumpfile(const char *filename, void *, size_t);
 
 /* Extracts named reference file to the current directory. */
 void extract_reference_file(const char *);
+/* Copies named reference file to the current directory. */
+void copy_reference_file(const char *);
 
 /* Extracts a list of files to the current directory.
  * List must be NULL terminated.

tar/test/main.c

@@ -2204,6 +2204,29 @@ extract_reference_file(const char *name)
 	fclose(in);
 }
 
+void
+copy_reference_file(const char *name)
+{
+	char buff[1024];
+	FILE *in, *out;
+	size_t rbytes;
+
+	sprintf(buff, "%s/%s", refdir, name);
+	in = fopen(buff, "rb");
+	failure("Couldn't open reference file %s", buff);
+	assert(in != NULL);
+	if (in == NULL)
+		return;
+	/* Now, decode the rest and write it. */
+	/* Not a lot of error checking here; the input better be right. */
+	out = fopen(name, "wb");
+	while ((rbytes = fread(buff, 1, sizeof(buff), in)) > 0) {
+		fwrite(buff, 1, rbytes, out);
+	}
+	fclose(out);
+	fclose(in);
+}
+
 int
 is_LargeInode(const char *file)
 {

tar/test/test.h

@@ -305,6 +305,8 @@ char *slurpfile(size_t *, const char *fmt, ...);
 
 /* Extracts named reference file to the current directory. */
 void extract_reference_file(const char *);
+/* Copies named reference file to the current directory. */
+void copy_reference_file(const char *);
 
 /* Path to working directory for current test */
 extern const char *testworkdir;