3.13

Common/StdInStream.cpp

@@ -0,0 +1,78 @@
+// Common/StdInStream.cpp
+
+#include "StdAfx.h"
+
+#include <tchar.h>
+#include "StdInStream.h"
+
+static const char kIllegalChar = '\0';
+static const char kNewLineChar = '\n';
+
+static const char *kEOFMessage = "Unexpected end of input stream";
+static const char *kReadErrorMessage  ="Error reading input stream"; 
+static const char *kIllegalCharMessage = "Illegal character in input stream";
+
+static LPCTSTR kFileOpenMode = TEXT("r");
+
+CStdInStream g_StdIn(stdin);
+
+bool CStdInStream::Open(LPCTSTR fileName)
+{
+  Close();
+  _stream = _tfopen(fileName, kFileOpenMode);
+  _streamIsOpen = (_stream != 0);
+  return _streamIsOpen;
+}
+
+bool CStdInStream::Close()
+{
+  if(!_streamIsOpen)
+    return true;
+  _streamIsOpen = (fclose(_stream) != 0);
+  return !_streamIsOpen;
+}
+
+CStdInStream::~CStdInStream()
+{
+  Close();
+}
+
+AString CStdInStream::ScanStringUntilNewLine()
+{
+  AString string;
+  while(true)
+  {
+    int aIntChar = GetChar();
+    if(aIntChar == EOF)
+      throw kEOFMessage;
+    char aChar = char(aIntChar);
+    if (aChar == kIllegalChar)
+      throw kIllegalCharMessage;
+    if(aChar == kNewLineChar)
+      return string;
+    string += aChar;
+  }
+}
+
+void CStdInStream::ReadToString(AString &resultString)
+{
+  resultString.Empty();
+  int c;
+  while((c = GetChar()) != EOF)
+    resultString += char(c);
+}
+
+bool CStdInStream::Eof()
+{
+  return (feof(_stream) != 0);
+}
+
+int CStdInStream::GetChar()
+{
+  int c = getc(_stream);
+  if(c == EOF && !Eof())
+    throw kReadErrorMessage;
+  return c;
+}
+
+