inherit privately from noncopyable, add algos, use namespace lyx

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@1933 a592a061-630c-0410-9148-cb99ea01b6c8

src/support/ChangeLog

@@ -1,3 +1,10 @@
+2001-04-17  Lars Gullik Bjønnes  <larsbj@birdstep.com>
+
+	* lyxalgo.h: put into namespace lyx, add firster and copy_if
+
+	* FileInfo.h: inherit privately from noncopyable
+	* path.h: ditto
+
 2001-04-16  Allan Rae  <rae@lyx.org>
 
 	* tempname.C (make_tempfile): #warning triggers an error on Sun CC 6.0

src/support/FileInfo.h

@@ -26,7 +26,7 @@
 
 /** Use objects of this class to get information about files.
  */
-class FileInfo : public boost::noncopyable {
+class FileInfo : boost::noncopyable {
 public:
 	///
 	FileInfo();

src/support/lyxalgo.h

@@ -3,7 +3,10 @@
 #ifndef LYX_ALGO_H
 #define LYX_ALGO_H
 
-//namespace lyx {
+#include <utility>
+
+namespace lyx {
+
 
 /// Returns true if the sequence first,last is sorted, false if not.
 template <class For>
@@ -17,6 +20,7 @@ bool sorted(For first, For last)
 	return true;
 }
 
+
 /// Cmp is the same Cmp as you would pass to std::sort.
 template <class For, class Cmp>
 bool sorted(For first, For last, Cmp cmp)
@@ -29,5 +33,26 @@ bool sorted(For first, For last, Cmp cmp)
 	return true;
 }
 
-// }  // end of namespace lyx
+
+struct firster {
+	template <class P1, class P2>
+	P1 operator()(std::pair<P1, P2> const & p) {
+		return p.first;
+	}
+};
+
+
+template <class InputIter, class OutputIter, class Func>
+OutputIter copy_if(InputIter first, InputIter last,
+	       OutputIter result, Func func) 
+{
+	for (; first != last; ++first) {
+		if (func(*first)) {
+			*result++ = *first;
+		}
+	}
+	return result;
+}
+
+}  // end of namespace lyx
 #endif

src/support/path.h

@@ -12,7 +12,7 @@
 #endif
 
 ///
-class Path : public boost::noncopyable {
+class Path : boost::noncopyable {
 public:
 	///
 	explicit