+
+#if defined(_WIN32)
+int app_isdir(const char *name)
+ {
+ HANDLE hList;
+ WIN32_FIND_DATA FileData;
+#if defined(UNICODE) || defined(_UNICODE)
+ size_t i, len_0 = strlen(name)+1;
+
+ if (len_0 > sizeof(FileData.cFileName)/sizeof(FileData.cFileName[0]))
+ return -1;
+
+#if !defined(_WIN32_WCE) || _WIN32_WCE>=101
+ if (!MultiByteToWideChar(CP_ACP,0,name,len_0,FileData.cFileName,len_0))
+#endif
+ for (i=0;i<len_0;i++)
+ FileData.cFileName[i] = (WCHAR)name[i];
+
+ hList = FindFirstFile(FileData.cFileName,&FileData);
+#else
+ hList = FindFirstFile(name,&FileData);
+#endif
+ if (hList == INVALID_HANDLE_VALUE) return -1;
+ FindClose(hList);
+ return ((FileData.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)!=0);
+ }
+#else
+#include <sys/stat.h>
+#ifndef S_ISDIR
+# if defined(_S_IFMT) && defined(_S_IFDIR)
+# define S_ISDIR(a) (((a) & _S_IFMT) == _S_IFDIR)
+# else
+# define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
+# endif
+#endif
+
+int app_isdir(const char *name)
+ {
+#if defined(S_ISDIR)
+ struct stat st;
+
+ if (stat(name,&st)==0) return S_ISDIR(st.st_mode);
+ else return -1;
+#else
+ return -1;
+#endif
+ }
+#endif
+
+#if defined(_WIN32) && defined(STD_INPUT_HANDLE)
+int raw_read_stdin(void *buf,int siz)
+ {
+ DWORD n;
+ if (ReadFile(GetStdHandle(STD_INPUT_HANDLE),buf,siz,&n,NULL))
+ return (n);
+ else return (-1);
+ }
+#else
+int raw_read_stdin(void *buf,int siz)
+ { return read(fileno(stdin),buf,siz); }
+#endif
+
+#if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
+int raw_write_stdout(void *buf,int siz)
+ {
+ DWORD n;
+ if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE),buf,siz,&n,NULL))
+ return (n);
+ else return (-1);
+ }
+#else
+int raw_write_stdout(const void *buf,int siz)
+ { return write(fileno(stdout),buf,siz); }
+#endif
+