Merge branch 'jc/maint-1.6.0-blank-at-eof' (early part) into jc/maint-blank-at-eof

[git.git] / compat / mingw.c

diff --git a/compat/mingw.c b/compat/mingw.c
index e190fddf41d6b15d9254859fca8b638ed7c0f428..bed417875e1344690977fd6aa41b955f127b74b4 100644 (file)
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1,5 +1,6 @@
 #include "../git-compat-util.h"
 #include "win32.h"
+#include <conio.h>
 #include "../strbuf.h"
 
 unsigned int _CRT_fmode = _O_BINARY;
@@ -1171,3 +1172,62 @@ char *getpass(const char *prompt)
        fputs("\n", stderr);
        return strbuf_detach(&buf, NULL);
 }
+
+#ifndef NO_MINGW_REPLACE_READDIR
+/* MinGW readdir implementation to avoid extra lstats for Git */
+struct mingw_DIR
+{
+       struct _finddata_t      dd_dta;         /* disk transfer area for this dir */
+       struct mingw_dirent     dd_dir;         /* Our own implementation, including d_type */
+       long                    dd_handle;      /* _findnext handle */
+       int                     dd_stat;        /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */
+       char                    dd_name[1];     /* given path for dir with search pattern (struct is extended) */
+};
+
+struct dirent *mingw_readdir(DIR *dir)
+{
+       WIN32_FIND_DATAA buf;
+       HANDLE handle;
+       struct mingw_DIR *mdir = (struct mingw_DIR*)dir;
+
+       if (!dir->dd_handle) {
+               errno = EBADF; /* No set_errno for mingw */
+               return NULL;
+       }
+
+       if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0)
+       {
+               handle = FindFirstFileA(dir->dd_name, &buf);
+               DWORD lasterr = GetLastError();
+               dir->dd_handle = (long)handle;
+               if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) {
+                       errno = err_win_to_posix(lasterr);
+                       return NULL;
+               }
+       } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) {
+               return NULL;
+       } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) {
+               DWORD lasterr = GetLastError();
+               FindClose((HANDLE)dir->dd_handle);
+               dir->dd_handle = (long)INVALID_HANDLE_VALUE;
+               /* POSIX says you shouldn't set errno when readdir can't
+                  find any more files; so, if another error we leave it set. */
+               if (lasterr != ERROR_NO_MORE_FILES)
+                       errno = err_win_to_posix(lasterr);
+               return NULL;
+       }
+
+       /* We get here if `buf' contains valid data.  */
+       strcpy(dir->dd_dir.d_name, buf.cFileName);
+       ++dir->dd_stat;
+
+       /* Set file type, based on WIN32_FIND_DATA */
+       mdir->dd_dir.d_type = 0;
+       if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+               mdir->dd_dir.d_type |= DT_DIR;
+       else
+               mdir->dd_dir.d_type |= DT_REG;
+
+       return (struct dirent*)&dir->dd_dir;
+}
+#endif // !NO_MINGW_REPLACE_READDIR