1 files changed, 156 insertions, 0 deletions
diff --git a/libwinmain/winmain.c b/libwinmain/winmain.c
new file mode 100644
index 000000000..65c6e7919
--- /dev/null
+++ b/libwinmain/winmain.c
@@ -0,0 +1,156 @@
+#include <windows.h>
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <io.h>
+
+#define MAX_CONSOLE_LINES 500
+
+int main(int argc, char *argv[], char *penv[]);
+
+/* Ignore control c and control break signals */
+static BOOL WINAPI IgnoreControlC(DWORD dwCtrlType)
+{
+  if (dwCtrlType==CTRL_C_EVENT || dwCtrlType==CTRL_BREAK_EVENT)
+    return TRUE;
+  return FALSE;
+}
+
+static void CreateConsole(void)
+{
+  static int ConsoleCreated=0;
+  if (!ConsoleCreated)
+  {
+    int hConHandle;
+    HANDLE lStdHandle;
+    CONSOLE_SCREEN_BUFFER_INFO coninfo;
+
+    FILE *fp;
+    ConsoleCreated=1;
+    if (!AttachConsole(ATTACH_PARENT_PROCESS))
+      AllocConsole();
+    else
+      SetConsoleCtrlHandler(IgnoreControlC,TRUE);     // Only allow control C interrupt the program when a console was created
+
+
+      // set the screen buffer to be big enough to let us scroll text
+    GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &coninfo);
+    if (coninfo.dwSize.Y < MAX_CONSOLE_LINES)
+    {
+      coninfo.dwSize.Y = MAX_CONSOLE_LINES;
+      SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), coninfo.dwSize);
+    }
+
+    // redirect unbuffered STDOUT to the console
+    lStdHandle = GetStdHandle(STD_OUTPUT_HANDLE);
+    hConHandle = _open_osfhandle((intptr_t)lStdHandle, _O_TEXT);
+    if (hConHandle==-1) // error occured, so return
+      return;
+    fp = _fdopen( hConHandle, "w" );
+    *stdout = *fp;
+    setvbuf( stdout, NULL, _IONBF, 0 );
+
+    // redirect unbuffered STDIN to the console
+    lStdHandle = GetStdHandle(STD_INPUT_HANDLE);
+    hConHandle = _open_osfhandle((intptr_t)lStdHandle, _O_TEXT);
+    fp = _fdopen( hConHandle, "r" );
+    *stdin = *fp;
+    setvbuf( stdin, NULL, _IONBF, 0 );
+
+    // redirect unbuffered STDERR to the console
+    lStdHandle = GetStdHandle(STD_ERROR_HANDLE);
+    hConHandle = _open_osfhandle((intptr_t)lStdHandle, _O_TEXT);
+    fp = _fdopen( hConHandle, "w" );
+    *stderr = *fp;
+    setvbuf( stderr, NULL, _IONBF, 0 );
+  }
+}
+
+int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
+{
+  int argc=1;
+  char ProgramName[255];
+  #define MAXNRARGS 100
+  char *argv[MAXNRARGS];
+  char *pTmp;
+  char *pProgramName;
+  char **penv;
+  int Ret;
+  LPTCH pEnvStrings;
+
+  hInstance=hInstance;
+  nCmdShow=nCmdShow;
+  hPrevInstance=hPrevInstance;
+
+  if (!strncmp(lpCmdLine,"-console",8))
+  {
+    CreateConsole();
+    lpCmdLine+=9;
+  }
+  else
+  {
+    SetConsoleCtrlHandler(IgnoreControlC,TRUE);
+  }
+
+  GetModuleFileName(NULL,ProgramName,255);
+  pTmp=strrchr(ProgramName,'\\');
+  if (pTmp)
+    pProgramName=pTmp+1;
+  else
+    pProgramName=ProgramName;
+  pTmp=strrchr(pProgramName,'.');
+  if (pTmp)
+    *pTmp=0;
+  argv[0]=pProgramName;
+
+  pTmp=lpCmdLine;
+  while (*pTmp && argc<MAXNRARGS-1)
+  {
+    char *pEnd;
+    if (*pTmp=='"')
+    {
+      pTmp++;
+      pEnd=strchr(pTmp,'"');
+    }
+    else if (*pTmp!=' ')
+    {
+      pEnd=strchr(pTmp,' ');
+    }
+    else
+    {
+      pTmp++;
+      continue;
+    }
+    if (pEnd)
+    {
+      *pEnd=0;
+      argv[argc++]=pTmp;
+      pTmp=pEnd+1;
+    }
+    else
+    {
+      argv[argc++]=pTmp;
+      break;
+    }
+  }
+  
+  {
+    LPTCH pTmp=GetEnvironmentStrings();
+    int NrEnv=0;
+    pEnvStrings=pTmp;
+    penv=malloc(sizeof(*penv));
+    while (*pTmp)
+    {
+      penv=realloc(penv,(NrEnv+2)*sizeof(*penv));
+      penv[NrEnv++]=pTmp;
+      while (*pTmp) pTmp++;
+      pTmp++;
+    }
+    penv[NrEnv]=NULL;
+  }
+
+  Ret = main(argc,argv,penv);
+  free(penv);
+  FreeEnvironmentStrings(pEnvStrings);
+  return Ret;
+}