Remove $Id$ tags, update URL's, and more

- remove obsolete svn '$Id$' tags from all source files
- update .fl files and generated files accordingly
- replace 'http://www.fltk.org' URL's with 'https://...'
- replace bug report URL 'str.php' with 'bugs.php'
- remove trailing whitespace
- fix other whitespace errors flagged by Git
- add and/or fix missing or wrong standard headers
- convert tabs to spaces in all source files

The only relevant code changes are in the fluid/ folder where
some .fl files and other source files were used to generate
the '$Id' headers and footers.

1 files changed, 28 insertions, 34 deletions

diff --git a/src/filename_absolute.cxx b/src/filename_absolute.cxx
index 19c1d97a6..67beb50c3 100644
--- a/src/filename_absolute.cxx
+++ b/src/filename_absolute.cxx
@@ -1,6 +1,4 @@
 //
-// "$Id$"
-//
 // Filename expansion routines for the Fast Light Tool Kit (FLTK).
 //
 // Copyright 1998-2017 by Bill Spitzak and others.
@@ -9,11 +7,11 @@
 // the file "COPYING" which should have been included with this file.  If this
 // file is missing or damaged, see the license at:
 //
-//     http://www.fltk.org/COPYING.php
+//     https://www.fltk.org/COPYING.php
 //
-// Please report all bugs and problems on the following page:
+// Please see the following page on how to report bugs and issues:
 //
-//     http://www.fltk.org/str.php
+//     https://www.fltk.org/bugs.php
 //
 
 /* expand a file name by prepending current directory, deleting . and
@@ -40,7 +38,7 @@ inline int isdirsep(char c) {return c == '/';}
     fl_filename_absolute(out, sizeof(out), "../log/messages"); // out="/var/log/messages"
     \endcode
     \param[out] to resulting absolute filename
-    \param[in]  tolen size of the absolute filename buffer 
+    \param[in]  tolen size of the absolute filename buffer
     \param[in]  from relative filename
     \return 0 if no change, non zero otherwise
  */
@@ -114,16 +112,16 @@ int Fl_System_Driver::filename_absolute(char *to, int tolen, const char *from) {
     fl_filename_relative(out, sizeof(out), "../foo.txt");                // out="../foo.txt", return=0 (no change)
     \endcode
     \param[out] to resulting relative filename
-    \param[in]  tolen size of the relative filename buffer 
+    \param[in]  tolen size of the relative filename buffer
     \param[in]  from absolute filename
     \return 0 if no change, non zero otherwise
  */
-int					// O - 0 if no change, 1 if changed
-fl_filename_relative(char       *to,	// O - Relative filename
-                     int        tolen,	// I - Size of "to" buffer
+int                                     // O - 0 if no change, 1 if changed
+fl_filename_relative(char       *to,    // O - Relative filename
+                     int        tolen,  // I - Size of "to" buffer
                      const char *from)  // I - Absolute filename
 {
-  char cwd_buf[FL_PATH_MAX];	// Current directory
+  char cwd_buf[FL_PATH_MAX];    // Current directory
   // get the current directory and return if we can't
   if (!fl_getcwd(cwd_buf, sizeof(cwd_buf))) {
     strlcpy(to, from, tolen);
@@ -135,14 +133,14 @@ fl_filename_relative(char       *to,	// O - Relative filename
 
 /** Makes a filename relative to any other directory.
  \param[out] to resulting relative filename
- \param[in]  tolen size of the relative filename buffer 
+ \param[in]  tolen size of the relative filename buffer
  \param[in]  from absolute filename
  \param[in]  base relative to this absolute path
  \return 0 if no change, non zero otherwise
  */
-int					// O - 0 if no change, 1 if changed
-fl_filename_relative(char       *to,	// O - Relative filename
-                     int        tolen,	// I - Size of "to" buffer
+int                                     // O - 0 if no change, 1 if changed
+fl_filename_relative(char       *to,    // O - Relative filename
+                     int        tolen,  // I - Size of "to" buffer
                      const char *from,  // I - Absolute filename
                      const char *base) { // I - Find path relative to this path
   return Fl::system_driver()->filename_relative(to, tolen, from, base);
@@ -156,72 +154,72 @@ fl_filename_relative(char       *to,	// O - Relative filename
  */
 
 int                                             // O - 0 if no change, 1 if changed
-Fl_System_Driver::filename_relative(char *to,	// O - Relative filename
+Fl_System_Driver::filename_relative(char *to,   // O - Relative filename
                      int        tolen,          // I - Size of "to" buffer
                      const char *from,          // I - Absolute filename
                      const char *base)          // I - Find path relative to this path
 {
-  char          *newslash;		// Directory separator
-  const char	*slash;			// Directory separator
+  char          *newslash;              // Directory separator
+  const char    *slash;                 // Directory separator
   char          *cwd = 0L, *cwd_buf = 0L;
   if (base) cwd = cwd_buf = strdup(base);
-  
+
   // return if "from" is not an absolute path
   if (from[0] == '\0' || !isdirsep(*from)) {
     strlcpy(to, from, tolen);
     if (cwd_buf) free(cwd_buf);
     return 0;
   }
-  
+
   // return if "cwd" is not an absolute path
   if (!cwd || cwd[0] == '\0' || !isdirsep(*cwd)) {
     strlcpy(to, from, tolen);
     if (cwd_buf) free(cwd_buf);
     return 0;
   }
-  
+
   // test for the exact same string and return "." if so
   if (!strcmp(from, cwd)) {
     strlcpy(to, ".", tolen);
     free(cwd_buf);
     return (1);
   }
-  
+
   // compare both path names until we find a difference
   for (slash = from, newslash = cwd;
        *slash != '\0' && *newslash != '\0';
        slash ++, newslash ++)
     if (isdirsep(*slash) && isdirsep(*newslash)) continue;
     else if (*slash != *newslash) break;
-  
+
   // skip over trailing slashes
   if ( *newslash == '\0' && *slash != '\0' && !isdirsep(*slash)
       &&(newslash==cwd || !isdirsep(newslash[-1])) )
     newslash--;
-  
+
   // now go back to the first character of the first differing paths segment
   while (!isdirsep(*slash) && slash > from) slash --;
   if (isdirsep(*slash)) slash ++;
-  
+
   // do the same for the current dir
   if (isdirsep(*newslash)) newslash --;
   if (*newslash != '\0')
     while (!isdirsep(*newslash) && newslash > cwd) newslash --;
-  
+
   // prepare the destination buffer
   to[0]         = '\0';
   to[tolen - 1] = '\0';
-  
+
   // now add a "previous dir" sequence for every following slash in the cwd
   while (*newslash != '\0') {
     if (isdirsep(*newslash)) strlcat(to, "../", tolen);
-    
+
     newslash ++;
   }
-  
+
   // finally add the differing path from "from"
   strlcat(to, slash, tolen);
-  
+
   free(cwd_buf);
   return 1;
 }
@@ -230,7 +228,3 @@ Fl_System_Driver::filename_relative(char *to,	// O - Relative filename
  \}
  \endcond
  */
-
-//
-// End of "$Id$".
-//