From ec688b4723a041044226358bcd4dd6e2da39da49 Mon Sep 17 00:00:00 2001
From: Luca Muscariello <lumuscar+fdio@cisco.com>
Date: Thu, 23 Feb 2017 17:01:02 +0100
Subject: Initial commit: cframework. Longbow and Libparc

Change-Id: I90378dbd30da6033b20fb1f829b3b822cf366c59
Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>
---
 libparc/parc/algol/parc_FileOutputStream.c | 85 ++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100755 libparc/parc/algol/parc_FileOutputStream.c

(limited to 'libparc/parc/algol/parc_FileOutputStream.c')

diff --git a/libparc/parc/algol/parc_FileOutputStream.c b/libparc/parc/algol/parc_FileOutputStream.c
new file mode 100755
index 00000000..a17dc66c
--- /dev/null
+++ b/libparc/parc/algol/parc_FileOutputStream.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ */
+#include <config.h>
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <LongBow/runtime.h>
+
+#include <parc/algol/parc_FileOutputStream.h>
+#include <parc/algol/parc_Object.h>
+
+PARCOutputStreamInterface *PARCFileOutputStreamAsPARCInputStream = &(PARCOutputStreamInterface) {
+    .Acquire = (PARCOutputStream * (*)(PARCOutputStream *))parcFileOutputStream_Acquire,
+    .Release = (void (*)(PARCOutputStream **))parcFileOutputStream_Release,
+    .Write = (size_t (*)(PARCOutputStream *, PARCBuffer *))parcFileOutputStream_Write
+};
+
+struct parc_file_output_stream {
+    int fd;
+};
+
+static void
+_destroy(PARCFileOutputStream **streamPtr)
+{
+    PARCFileOutputStream *stream = *streamPtr;
+
+    close(stream->fd);
+}
+
+parcObject_ExtendPARCObject(PARCFileOutputStream, _destroy, NULL, NULL, NULL, NULL, NULL, NULL);
+
+PARCFileOutputStream *
+parcFileOutputStream_Create(int fileDescriptor)
+{
+    assertTrue(fileDescriptor != -1, "Invalid file descriptor");
+
+    PARCFileOutputStream *result = parcObject_CreateInstance(PARCFileOutputStream);
+    result->fd = fileDescriptor;
+
+    return result;
+}
+
+PARCOutputStream *
+parcFileOutputStream_AsOutputStream(PARCFileOutputStream *fileOutputStream)
+{
+    return parcOutputStream_Create(parcFileOutputStream_Acquire(fileOutputStream), PARCFileOutputStreamAsPARCInputStream);
+}
+
+parcObject_ImplementAcquire(parcFileOutputStream, PARCFileOutputStream);
+
+parcObject_ImplementRelease(parcFileOutputStream, PARCFileOutputStream);
+
+bool
+parcFileOutputStream_Write(PARCFileOutputStream *outputStream, PARCBuffer *buffer)
+{
+    const size_t maximumChunkSize = 1024 * 1024;
+
+    while (parcBuffer_HasRemaining(buffer)) {
+        size_t remaining = parcBuffer_Remaining(buffer);
+        size_t chunkSize = remaining > maximumChunkSize ? maximumChunkSize : remaining;
+        void *buf = parcBuffer_Overlay(buffer, chunkSize);
+        ssize_t nwritten = write(outputStream->fd, buf, chunkSize);
+        if (nwritten == -1) {
+            break;
+        }
+    }
+
+    return parcBuffer_HasRemaining(buffer) == false;
+}
-- 
cgit 1.2.3-korg