First checkin for OpenMesh 2.0

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597

Tools/Utils/conio.cc

@@ -0,0 +1,183 @@
+// ============================================================================
+
+#include <OpenMesh/Core/System/config.hh>
+#include <OpenMesh/Tools/Utils/conio.hh>
+
+// ----------------------------------------------------------------- Win32 ----
+#ifdef WIN32
+
+#include <conio.h>
+
+namespace OpenMesh {
+namespace Utils {
+
+int kbhit()  { return ::kbhit();  }
+int getch()  { return ::getch();  }
+int getche() { return ::getche(); }
+
+} // Tools
+} // AS
+// ----------------------------------------------------------------- Other ----
+#else
+
+// Based on code published by Floyd Davidson in a newsgroup.
+
+#include <stdio.h>     /* stdout, fflush() */
+#if !defined(POSIX_1003_1_2001)
+#  include <fcntl.h>
+#  include <unistd.h>  
+#else
+#  include <select.h>  /* select()       */
+#endif
+#include <termios.h>   /* tcsetattr()    */
+#include <sys/ioctl.h> /* ioctl()        */
+#include <sys/time.h>  /* struct timeval */
+
+namespace OpenMesh {
+namespace Utils {
+
+#ifdef CTIME
+#  undef CTIME
+#endif
+#define CTIME 1
+#define CMIN  1
+
+
+int kbhit(void)
+{
+  int cnt = 0;
+  int error;
+  static struct termios Otty, Ntty;
+
+  tcgetattr(0, &Otty);
+  Ntty = Otty;
+
+  Ntty.c_iflag      = 0; /* input mode */
+  Ntty.c_oflag      = 0; /* output mode */
+  Ntty.c_lflag     &= ~ICANON; /* raw mode */
+  Ntty.c_cc[VMIN]   = CMIN; /* minimum chars to wait for */
+  Ntty.c_cc[VTIME]  = CTIME; /* minimum wait time */
+
+  if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) 
+  {
+    struct timeval tv;
+    error += ioctl(0, FIONREAD, &cnt);
+    error += tcsetattr(0, TCSANOW, &Otty);
+    tv.tv_sec = 0;
+    tv.tv_usec = 100; /* insert at least a minimal delay */
+    select(1, NULL, NULL, NULL, &tv);
+  }
+  return (error == 0 ? cnt : -1 );
+}
+
+
+int getch(void)
+{
+  char ch;
+  int error;
+  static struct termios Otty, Ntty;
+  
+  fflush(stdout);
+  tcgetattr(0, &Otty);
+  Ntty = Otty;
+  
+  Ntty.c_iflag     = 0;        // input mode
+  Ntty.c_oflag     = 0;        // output mode
+  Ntty.c_lflag    &= ~ICANON;  // line settings  
+  Ntty.c_lflag    &= ~ECHO;    // enable echo
+  Ntty.c_cc[VMIN]  = CMIN;     // minimum chars to wait for
+  Ntty.c_cc[VTIME] = CTIME;    // minimum wait time
+
+  // Conditionals allow compiling with or without flushing pre-existing
+  // existing buffered input before blocking.
+#if 1
+  // use this to flush the input buffer before blocking for new input
+#  define FLAG TCSAFLUSH
+#else
+  // use this to return a char from the current input buffer, or block if
+  // no input is waiting.
+#  define FLAG TCSANOW
+#endif
+
+  if (0 == (error = tcsetattr(0, FLAG, &Ntty))) 
+  {
+    error = read(0, &ch, 1 );           // get char from stdin
+    error += tcsetattr(0, FLAG, &Otty); // restore old settings
+  }
+  return (error == 1 ? (int) ch : -1 );
+}
+
+
+int getche(void)
+{
+  char ch;
+  int error;
+  static struct termios Otty, Ntty;
+  
+  fflush(stdout);
+  tcgetattr(0, &Otty);
+  Ntty = Otty;
+  
+  Ntty.c_iflag     = 0;        // input mode
+  Ntty.c_oflag     = 0;        // output mode
+  Ntty.c_lflag    &= ~ICANON;  // line settings  
+  Ntty.c_lflag    |= ECHO;     // enable echo
+  Ntty.c_cc[VMIN]  = CMIN;     // minimum chars to wait for
+  Ntty.c_cc[VTIME] = CTIME;    // minimum wait time
+
+  // Conditionals allow compiling with or without flushing pre-existing
+  // existing buffered input before blocking.
+#if 1
+  // use this to flush the input buffer before blocking for new input
+#  define FLAG TCSAFLUSH
+#else
+  // use this to return a char from the current input buffer, or block if
+  // no input is waiting.
+#  define FLAG TCSANOW
+#endif
+
+  if (0 == (error = tcsetattr(0, FLAG, &Ntty))) {
+    error = read(0, &ch, 1 );           // get char from stdin
+    error += tcsetattr(0, FLAG, &Otty); // restore old settings
+  }
+
+  return (error == 1 ? (int) ch : -1 );
+}
+
+} // namespace Tools
+} // namespace AS
+// ----------------------------------------------------------------------------
+#endif // System dependent parts
+// ============================================================================
+
+//#define Test
+#if defined(Test)
+
+#include <ctype.h>
+
+int main (void) 
+{ 
+   char  msg[] = "press key to continue...";
+   char *ptr   = msg, tmp; 
+
+  while ( !OpenMesh::Utils::kbhit() )
+  {
+    tmp = *ptr;
+    *ptr = islower(tmp) ? toupper(tmp) : tolower(tmp);
+    printf("\r%s", msg); fflush(stdout);
+    *ptr = (char)tmp;
+    if (!*(++ptr)) 
+      ptr = msg; 
+    usleep(20000);
+  }
+
+  printf("\r%s.", msg); fflush(stdout);
+  OpenMesh::Utils::getch();
+  printf("\r%s..", msg); fflush(stdout);
+  OpenMesh::Utils::getche();
+  return 0;
+}
+
+#endif // Test
+
+// ============================================================================