-LRN: Wincat:

  I've been experimenting with an alternative non-MSYS buildsystem for
a while, and GNUNET_os_start_process() test kept failing due to lack
of cat. Wincat is a minimal cat implementation in pure WinAPI. It's
not named "cat.exe" to avoid clashing with MSYS cat (which can lead to
some very weird issues).

1 files changed, 108 insertions, 0 deletions

diff --git a/src/util/w32cat.c b/src/util/w32cat.c
new file mode 100644
index 000000000..0c5091c66
--- /dev/null
+++ b/src/util/w32cat.c
@@ -0,0 +1,108 @@
+/*
+     W32 version of 'cat' program
+     (C) 2012 LRN
+
+     cat is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     cat is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with cat; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+

+#include <stdio.h>

+#include <windows.h>

+

+int

+main (int argc, char **argv)

+{

+  HANDLE stdi, stdo;

+  BOOL b;

+  wchar_t *commandlinew, **argvw;

+  int argcw;

+  int i;

+

+  stdo = GetStdHandle (STD_OUTPUT_HANDLE);

+  if (stdo == INVALID_HANDLE_VALUE || stdo == NULL)

+    return 1;

+

+  commandlinew = GetCommandLineW ();

+  argvw = CommandLineToArgvW (commandlinew, &argcw);

+  if (argvw == NULL)

+    return 1;

+

+  for (i = 1; i < argcw || argcw == 1; i++)

+  {

+    DWORD r, w;

+    int is_dash = wcscmp (argvw[i], L"-") == 0;

+    if (argcw == 1 || is_dash)

+    {

+      stdi = GetStdHandle (STD_INPUT_HANDLE);

+      if (stdi == INVALID_HANDLE_VALUE)

+      {

+        fprintf (stderr, "cat: Failed to obtain stdin handle.\n");

+        return 4;

+      }

+      if (stdi == NULL)

+      {

+        fprintf (stderr, "cat: Have no stdin.\n");

+        return 5;

+      }

+    }

+    else

+    {

+      stdi = CreateFileW (argvw[i], GENERIC_READ, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);

+      if (stdi == INVALID_HANDLE_VALUE)

+      {

+        wchar_t *msgbuf;

+        DWORD le = GetLastError ();

+        if (0 < FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, 0, le, 0, (wchar_t *) &msgbuf, 0, NULL))

+        {

+          fprintf (stderr, "cat: Failed to open file `%S'. Error %lu.\n", argvw[i], le);

+          return 3;

+        }

+        fprintf (stderr, "cat: Failed to open file `%S'. Error %lu: %S\n", argvw[i], le, msgbuf);

+        if (msgbuf != NULL)

+          LocalFree (msgbuf);

+        return 2;

+      }

+    }

+    do

+    {

+      unsigned char c;

+      b = ReadFile (stdi, &c, 1, &r, NULL);

+      if (r > 0)

+      {

+        b = WriteFile (stdo, &c, 1, &w, NULL);

+        if (b == 0)

+        {

+          wchar_t *msgbuf;

+          DWORD le = GetLastError ();

+          if (0 < FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, 0, le, 0, (wchar_t *) &msgbuf, 0, NULL))

+          {

+            fprintf (stderr, "cat: Failed to write into stdout. Error %lu.\n", le);

+            return 3;

+          }

+          fprintf (stderr, "cat: Failed to write into stdout. Error %lu: %S\n", le, msgbuf);

+          if (msgbuf != NULL)

+            LocalFree (msgbuf);

+          return 6;

+        }

+      }

+    } while (b && r > 0);

+    if (argcw == 1)

+      break;

+    if (!is_dash)

+      CloseHandle (stdi);

+  }

+  LocalFree (argvw);

+  return 0;

+}