[json-glib] tools: Fix build on Visual Studio

[Chun-wei Fan <fanchunwei src gnome org>]

commit d97be101490a46c72f919d3dc45f4bc06e625e0c
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Feb 7 11:39:29 2014 +0800

    tools: Fix build on Visual Studio
    
    As unistd.h is not universally available, don't include it unconditionally
    and include the corresponding Windows headers where necessary.  Also, use
    gssize in place of ssize_t and define STDOUT_FILENO on Windows when we
    don't have unistd.h, which is a constant that is defined in unistd.h.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=723813

 json-glib/json-glib-format.c   |   11 ++++++++++-
 json-glib/json-glib-validate.c |    2 ++
 2 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/json-glib/json-glib-format.c b/json-glib/json-glib-format.c
index f10cee9..d39b325 100644
--- a/json-glib/json-glib-format.c
+++ b/json-glib/json-glib-format.c
@@ -23,7 +23,10 @@
 
 #include "config.h"
 
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <locale.h>
@@ -33,6 +36,12 @@
 #include <glib/gi18n.h>
 #include <json-glib/json-glib.h>
 
+#if defined (G_OS_WIN32) && !defined (HAVE_UNISTD_H)
+#include <io.h>
+
+#define STDOUT_FILENO 1
+#endif
+
 static char **files = NULL;
 static gboolean prettify = FALSE;
 static int indent_spaces = 2;
@@ -89,7 +98,7 @@ format (JsonParser    *parser,
   p = data;
   while (len > 0)
     {
-      ssize_t written = write (STDOUT_FILENO, p, len);
+      gssize written = write (STDOUT_FILENO, p, len);
 
       if (written == -1 && errno != EINTR)
         {
diff --git a/json-glib/json-glib-validate.c b/json-glib/json-glib-validate.c
index 97bd53d..2eb013a 100644
--- a/json-glib/json-glib-validate.c
+++ b/json-glib/json-glib-validate.c
@@ -23,7 +23,9 @@
 
 #include "config.h"
 
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 #include <stdlib.h>
 #include <stdio.h>
 #include <locale.h>