convert lfun arguments to docstring

[lyx.git] / src / support / docstring.h

diff --git a/src/support/docstring.h b/src/support/docstring.h
index 9f54f0eaaa1c45b1062e6b4b6550a19f201e4ba0..831289c1fcc3bd5a14bf64cdc3caa2e998e7559f 100644 (file)
--- a/src/support/docstring.h
+++ b/src/support/docstring.h
@@ -4,11 +4,8 @@
  * This file is part of LyX, the document processor.
  * Licence details can be found in the file COPYING.
  *
- * Provide a set of typedefs for commonly used things like sizes and
- * indices wile trying to stay compatible with types used
- * by the standard containers.
- *
- * \author André Pönitz
+ * \author Lars Gullik Bjønnes
+ * \author Georg Baum
  *
  * Full author contact details are available in file CREDITS.
  */
@@ -21,8 +18,149 @@
 
 namespace lyx {
 
+/// String type for storing the main text in UCS4 encoding
 typedef std::basic_string<boost::uint32_t> docstring;
 
+/// Creates a docstring from a C string of ASCII characters
+docstring const from_ascii(char const *);
+
+/// Creates a docstring from a std::string of ASCII characters
+docstring const from_ascii(std::string const &);
+
+/// Creates a docstring from a UTF8 string. This should go eventually.
+docstring const from_utf8(std::string const &);
+
+/// Creates a UTF8 string from a docstring. This should go eventually.
+std::string const to_utf8(docstring const &);
+
+}
+
+/// Compare a docstring with a C string of ASCII characters
+bool operator==(lyx::docstring const &, char const *);
+
+/// Compare a C string of ASCII characters with a docstring
+inline bool operator==(char const * l, lyx::docstring const & r) { return r == l; }
+
+/// Compare a docstring with a C string of ASCII characters
+inline bool operator!=(lyx::docstring const & l, char const * r) { return !(l == r); }
+
+/// Compare a C string of ASCII characters with a docstring
+inline bool operator!=(char const * l, lyx::docstring const & r) { return !(r == l); }
+
+#if defined(__GNUC__) && defined(__GNUC_MINOR__) && __GNUC__ == 3 && __GNUC_MINOR__ < 4
+// Missing char_traits methods in gcc 3.3 and older. Taken from gcc 4.2svn.
+namespace std {
+
+template<typename T> void
+char_traits<T>::assign(char_type & c1, char_type const & c2)
+{
+       c1 = c2;
+}
+
+
+template<typename T> bool
+char_traits<T>::eq(char_type const & c1, char_type const & c2)
+{
+       return c1 == c2;
+}
+
+
+template<typename T> bool
+char_traits<T>::lt(char_type const & c1, char_type const & c2)
+{
+       return c1 < c2;
+}
+
+
+template<typename T> int
+char_traits<T>::compare(char_type const * s1, char_type const * s2, std::size_t n)
+{
+       for (std::size_t i = 0; i < n; ++i)
+               if (lt(s1[i], s2[i]))
+                       return -1;
+               else if (lt(s2[i], s1[i]))
+                       return 1;
+       return 0;
+}
+
+
+template<typename T> std::size_t
+char_traits<T>::length(char_type const * p)
+{
+       std::size_t i = 0;
+       while (!eq(p[i], char_type()))
+               ++i;
+       return i;
+}
+
+
+template<typename T> typename char_traits<T>::char_type const *
+char_traits<T>::find(char_type const * s, size_t n, char_type const & a)
+{
+       for (std::size_t i = 0; i < n; ++i)
+               if (eq(s[i], a))
+                       return s + i;
+       return 0;
 }
 
+
+template<typename T> typename char_traits<T>::char_type *
+char_traits<T>::move(char_type * s1, char_type const * s2, std::size_t n)
+{
+       return static_cast<T *>(std::memmove(s1, s2, n * sizeof(char_type)));
+}
+
+
+template<typename T> typename char_traits<T>::char_type *
+char_traits<T>::copy(char_type * s1, char_type const * s2, std::size_t n)
+{
+       std::copy(s2, s2 + n, s1);
+       return s1;
+}
+
+
+template<typename T> typename char_traits<T>::char_type *
+char_traits<T>::assign(char_type * s, std::size_t n, char_type a)
+{
+       std::fill_n(s, n, a);
+       return s;
+}
+
+
+template<typename T> typename char_traits<T>::char_type
+char_traits<T>::to_char_type(int_type const & c)
+{
+       return static_cast<char_type>(c);
+}
+
+
+template<typename T> typename char_traits<T>::int_type
+char_traits<T>::to_int_type(char_type const & c)
+{
+       return static_cast<int_type>(c);
+}
+
+
+template<typename T> bool
+char_traits<T>::eq_int_type(int_type const & c1, int_type const & c2)
+{
+       return c1 == c2;
+}
+
+
+template<typename T> typename char_traits<T>::int_type
+char_traits<T>::eof()
+{
+       return static_cast<int_type>(EOF);
+}
+
+
+template<typename T> typename char_traits<T>::int_type
+char_traits<T>::not_eof(int_type const & c)
+{
+       return !eq_int_type(c, eof()) ? c : to_int_type(char_type());
+}
+
+}
+#endif
 #endif