1 files changed, 117 insertions, 0 deletions
diff --git a/app/wlib/gtklib/opendocument.c b/app/wlib/gtklib/opendocument.c
new file mode 100644
index 0000000..c03f9cb
--- /dev/null
+++ b/app/wlib/gtklib/opendocument.c
@@ -0,0 +1,117 @@
+/** \file opendocument.c
+ * open a document using the systems default application for that doc
+ */
+
+/*  XTrkCad - Model Railroad CAD
+ *  Copyright (C) 2018 Martin Fischer
+ *
+ *  This program 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 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+
+#include "gtkint.h"
+#include "i18n.h"
+
+#include "dynstring.h"
+
+#if defined (_WIN32)
+
+#define DEFAULTOPENCOMMAND "start"
+
+#endif
+
+#if defined(__APPLE__) && defined(__MACH__)
+
+#define DEFAULTOPENCOMMAND "open"
+
+#else
+
+#define DEFAULTOPENCOMMAND "xdg-open"
+
+#endif
+
+/**
+ * Extend the PATH variable in the environment to include XTrackCAD's
+ * script directory.
+ *
+ * \return pointer to old path
+ */
+
+static char *
+ExtendPath(void)
+{
+    char *path = strdup(getenv("PATH"));
+    DynString newPath;
+    DynStringMalloc(&newPath, 16);
+
+    // append XTrackCAD's directory to the path as a fallback
+    DynStringCatCStrs(&newPath,
+                      path,
+                      ":",
+                      wGetAppLibDir(),
+                      NULL);
+
+    setenv("PATH",
+           DynStringToCStr(&newPath),
+           TRUE);
+
+    DynStringFree(&newPath);
+
+    return (path);
+}
+
+/**
+ * Invoke the system's default application to open a file. First the
+ * system's standard xdg-open command is attempted. If that is not available, the
+ * version included with the XTrackCAD installation is executed.
+ *
+ * \param topic IN URI of document
+ */
+
+unsigned wOpenFileExternal(char * filename)
+{
+    int rc;
+    DynString commandLine;
+    char *currentPath;
+
+    assert(filename != NULL);
+    assert(strlen(filename));
+
+    currentPath = ExtendPath();
+    
+    DynStringMalloc(&commandLine, 16);
+    DynStringCatCStrs(&commandLine,
+                      DEFAULTOPENCOMMAND,
+                      " \"",
+                      filename,
+					  "\"",
+                      NULL);
+
+    // the command should be found via the PATH
+    rc = system(DynStringToCStr(&commandLine));
+
+    // restore the PATH
+    setenv("PATH",
+           currentPath,
+           TRUE);
+
+    free(currentPath);
+    DynStringFree(&commandLine);
+    
+    return(rc==0);
+}