Include a stripped-down version of FLTK in tree and add a USE_INCLUDED_FLTK option to build against it.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4603 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/fltk/src/filename_expand.cxx b/common/fltk/src/filename_expand.cxx
new file mode 100644
index 0000000..2591ec4
--- /dev/null
+++ b/common/fltk/src/filename_expand.cxx
@@ -0,0 +1,134 @@
+//
+// "$Id: filename_expand.cxx 7903 2010-11-28 21:06:39Z matt $"
+//
+// Filename expansion routines for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+// http://www.fltk.org/str.php
+//
+
+/* expand a file name by substuting environment variables and
+ home directories. Returns true if any changes were made.
+ to & from may be the same buffer.
+*/
+
+#include <FL/filename.H>
+#include <FL/fl_utf8.h>
+#include <stdlib.h>
+#include "flstring.h"
+#if defined(WIN32) && !defined(__CYGWIN__)
+#include <windows.h>
+#else
+# include <unistd.h>
+# include <pwd.h>
+#endif
+
+#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
+static inline int isdirsep(char c) {return c=='/' || c=='\\';}
+#else
+#define isdirsep(c) ((c)=='/')
+#endif
+
+/** Expands a filename containing shell variables and tilde (~).
+ Currently handles these variants:
+ \code
+ "~username" // if 'username' does not exist, result will be unchanged
+ "~/file"
+ "$VARNAME" // does NOT handle ${VARNAME}
+ \endcode
+
+ \b Examples:
+ \code
+ #include <FL/filename.H>
+ [..]
+ putenv("TMPDIR=/var/tmp");
+ fl_filename_expand(out, sizeof(out), "~fred/.cshrc"); // out="/usr/fred/.cshrc"
+ fl_filename_expand(out, sizeof(out), "~/.cshrc"); // out="/usr/<yourname>/.cshrc"
+ fl_filename_expand(out, sizeof(out), "$TMPDIR/foo.txt"); // out="/var/tmp/foo.txt"
+ \endcode
+ \param[out] to resulting expanded filename
+ \param[in] tolen size of the expanded filename buffer
+ \param[in] from filename containing shell variables
+ \return 0 if no change, non zero otherwise
+ */
+int fl_filename_expand(char *to,int tolen, const char *from) {
+
+ char *temp = new char[tolen];
+ strlcpy(temp,from, tolen);
+ char *start = temp;
+ char *end = temp+strlen(temp);
+
+ int ret = 0;
+
+ for (char *a=temp; a<end; ) { // for each slash component
+ char *e; for (e=a; e<end && !isdirsep(*e); e++); // find next slash
+ const char *value = 0; // this will point at substitute value
+ switch (*a) {
+ case '~': // a home directory name
+ if (e <= a+1) { // current user's directory
+ value = fl_getenv("HOME");
+#ifndef WIN32
+ } else { // another user's directory
+ struct passwd *pwd;
+ char t = *e; *(char *)e = 0;
+ pwd = getpwnam(a+1);
+ *(char *)e = t;
+ if (pwd) value = pwd->pw_dir;
+#endif
+ }
+ break;
+ case '$': /* an environment variable */
+ {char t = *e; *(char *)e = 0; value = fl_getenv(a+1); *(char *)e = t;}
+ break;
+ }
+ if (value) {
+ // substitutions that start with slash delete everything before them:
+ if (isdirsep(value[0])) start = a;
+#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
+ // also if it starts with "A:"
+ if (value[0] && value[1]==':') start = a;
+#endif
+ int t = strlen(value); if (isdirsep(value[t-1])) t--;
+ if ((end+1-e+t) >= tolen) end += tolen - (end+1-e+t);
+ memmove(a+t, e, end+1-e);
+ end = a+t+(end-e);
+ *end = '\0';
+ memcpy(a, value, t);
+ ret++;
+ } else {
+ a = e+1;
+#if defined(WIN32) || defined(__EMX__) && !defined(__CYGWIN__)
+ if (*e == '\\') {*e = '/'; ret++;} // ha ha!
+#endif
+ }
+ }
+
+ strlcpy(to, start, tolen);
+
+ delete[] temp;
+
+ return ret;
+}
+
+
+//
+// End of "$Id: filename_expand.cxx 7903 2010-11-28 21:06:39Z matt $".
+//