misc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 31 insertions, 0 deletions

diff --git a/libgamma_x_randr_internal_translate_error.c b/libgamma_x_randr_internal_translate_error.c
new file mode 100644
index 0000000..7752c03
--- /dev/null
+++ b/libgamma_x_randr_internal_translate_error.c
@@ -0,0 +1,31 @@
+/* See LICENSE file for copyright and license details. */
+#define IN_LIBGAMMA_X_RANDR
+#include "common.h"
+
+
+/**
+ * Translate an xcb error into a libgamma error
+ * 
+ * @param   error_code     The xcb error
+ * @param   default_error  The libgamma error to use if the xcb error is not recognised
+ * @param   return_errno   Whether an `errno` value may be returned
+ * @return                 The libgamma error
+ */
+int
+libgamma_x_randr_internal_translate_error(int error_code, int default_error, int return_errno)
+{
+	int r = LIBGAMMA_ERRNO_SET;
+	switch (error_code) {
+	case XCB_CONN_ERROR:                    errno = ECONNABORTED;  break;
+	case XCB_CONN_CLOSED_EXT_NOTSUPPORTED:  errno = ENOPROTOOPT;  break;
+	case XCB_CONN_CLOSED_MEM_INSUFFICIENT:  errno = ENOMEM;  break;
+	case XCB_CONN_CLOSED_REQ_LEN_EXCEED:    errno = EMSGSIZE;  break;
+	case XCB_CONN_CLOSED_PARSE_ERR:         r = LIBGAMMA_NO_SUCH_SITE;  break;
+	case XCB_CONN_CLOSED_INVALID_SCREEN:    r = LIBGAMMA_NO_SUCH_PARTITION;  break;
+	case XCB_CONN_CLOSED_FDPASSING_FAILED:  errno = EIO;  break;
+	default:
+		r = default_error;
+		break;
+	}
+	return (return_errno && r > 0) ? errno : r;
+}