Organized api/internal into subdirs

[bamtools.git] / src / api / internal / io / BamPipe_p.cpp

diff --git a/src/api/internal/io/BamPipe_p.cpp b/src/api/internal/io/BamPipe_p.cpp
new file mode 100644 (file)
index 0000000..40f1e10
--- /dev/null
+++ b/src/api/internal/io/BamPipe_p.cpp
@@ -0,0 +1,57 @@
+// ***************************************************************************
+// BamPipe_p.cpp (c) 2011 Derek Barnett
+// Marth Lab, Department of Biology, Boston College
+// ---------------------------------------------------------------------------
+// Last modified: 25 October 2011 (DB)
+// ---------------------------------------------------------------------------
+// Provides BAM pipe-specific IO behavior
+// ***************************************************************************
+
+#include "api/internal/io/BamPipe_p.h"
+using namespace BamTools;
+using namespace BamTools::Internal;
+
+#include <cstdio>
+#include <iostream>
+using namespace std;
+
+BamPipe::BamPipe(void) : ILocalIODevice() { }
+
+BamPipe::~BamPipe(void) { }
+
+bool BamPipe::IsRandomAccess(void) const {
+    return false;
+}
+
+bool BamPipe::Open(const IBamIODevice::OpenMode mode) {
+
+    // make sure we're starting with a fresh pipe
+    Close();
+
+    // open stdin/stdout depending on requested openmode
+    if ( mode == IBamIODevice::ReadOnly )
+        m_stream = freopen(0, "rb", stdin);
+    else if ( mode == IBamIODevice::WriteOnly )
+        m_stream = freopen(0, "wb", stdout);
+    else {
+        SetErrorString("BamPipe::Open", "unknown open mode requested");
+        return false;
+    }
+
+    // check that we obtained a valid FILE*
+    if ( m_stream == 0 ) {
+        const string message_base = string("could not open handle on ");
+        const string message = message_base + ( (mode == IBamIODevice::ReadOnly) ? "stdin" : "stdout" );
+        SetErrorString("BamPipe::Open", message);
+        return false;
+    }
+
+    // store current IO mode & return success
+    m_mode = mode;
+    return true;
+}
+
+bool BamPipe::Seek(const int64_t& ) {
+    SetErrorString("BamPipe::Seek", "random access not allowed in FIFO pipe");
+    return false;
+}