1 files changed, 73 insertions, 0 deletions
diff --git a/ext/-test-/file/newline_conv.c b/ext/-test-/file/newline_conv.c
new file mode 100644
index 0000000000..2ac5aef801
--- /dev/null
+++ b/ext/-test-/file/newline_conv.c
@@ -0,0 +1,73 @@
+#include "ruby/ruby.h"
+#include "ruby/io.h"
+#include <fcntl.h>
+
+static VALUE
+open_with_rb_file_open(VALUE self, VALUE filename, VALUE read_or_write, VALUE binary_or_text)
+{
+    char fmode[3] = { 0 };
+    if (rb_sym2id(read_or_write) == rb_intern("read")) {
+        fmode[0] = 'r';
+    }
+    else if (rb_sym2id(read_or_write) == rb_intern("write")) {
+        fmode[0] = 'w';
+    }
+    else {
+        rb_raise(rb_eArgError, "read_or_write param must be :read or :write");
+    }
+
+    if (rb_sym2id(binary_or_text) == rb_intern("binary")) {
+        fmode[1] = 'b';
+    }
+    else if (rb_sym2id(binary_or_text) == rb_intern("text")) {
+
+    }
+    else {
+        rb_raise(rb_eArgError, "binary_or_text param must be :binary or :text");
+    }
+
+    return rb_file_open(StringValueCStr(filename), fmode);
+}
+
+static VALUE
+open_with_rb_io_fdopen(VALUE self, VALUE filename, VALUE read_or_write, VALUE binary_or_text)
+{
+    int omode = 0;
+    if (rb_sym2id(read_or_write) == rb_intern("read")) {
+        omode |= O_RDONLY;
+    }
+    else if (rb_sym2id(read_or_write) == rb_intern("write")) {
+        omode |= O_WRONLY;
+    }
+    else {
+        rb_raise(rb_eArgError, "read_or_write param must be :read or :write");
+    }
+
+    if (rb_sym2id(binary_or_text) == rb_intern("binary")) {
+#ifdef O_BINARY
+        omode |= O_BINARY;
+#endif
+    }
+    else if (rb_sym2id(binary_or_text) == rb_intern("text")) {
+
+    }
+    else {
+        rb_raise(rb_eArgError, "binary_or_text param must be :binary or :text");
+    }
+
+    int fd = rb_cloexec_open(StringValueCStr(filename), omode, 0);
+    if (fd < 0) {
+        rb_raise(rb_eIOError, "failed to open the file");
+    }
+
+    rb_update_max_fd(fd);
+    return rb_io_fdopen(fd, omode, StringValueCStr(filename));
+}
+
+void
+Init_newline_conv(VALUE module)
+{
+    VALUE newline_conv = rb_define_module_under(module, "NewlineConv");
+    rb_define_module_function(newline_conv, "rb_file_open", open_with_rb_file_open, 3);
+    rb_define_module_function(newline_conv, "rb_io_fdopen", open_with_rb_io_fdopen, 3);
+}