1 files changed, 170 insertions, 0 deletions
diff --git a/libxsde/xsde/cxx/iso8859-1.cxx b/libxsde/xsde/cxx/iso8859-1.cxx
new file mode 100644
index 0000000..b52a284
--- /dev/null
+++ b/libxsde/xsde/cxx/iso8859-1.cxx
@@ -0,0 +1,170 @@
+// file      : xsde/cxx/iso8859-1.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#include <xsde/cxx/iso8859-1.hxx>
+
+namespace xsde
+{
+  namespace cxx
+  {
+    char iso8859_1::unrep_char_ = '\0';
+
+    bool iso8859_1::
+    to (const char* s, char* r)
+    {
+      for (; *s != 0; ++s)
+      {
+        unsigned char c (*s);
+
+        if (c < 0x80)
+        {
+          // Fast path.
+          //
+          *r++ = c;
+          continue;
+        }
+        else if ((c >> 5) == 0x06)
+        {
+          // UTF-8:   110yyyyy 10zzzzzz
+          // Unicode: 00000yyy yyzzzzzz
+          //
+          unsigned int u = (c & 0x1F) << 6;
+          c = *++s;
+          u |= c & 0x3F;
+
+          if (u < 0x100)
+          {
+            *r++ = static_cast<char> (u);
+            continue;
+          }
+        }
+        else if ((c >> 4) == 0x0E)
+        {
+          // UTF-8:   1110xxxx 10yyyyyy 10zzzzzz
+          // Unicode: xxxxyyyy yyzzzzzz
+          //
+          s += 2;
+        }
+        else if ((c >> 3) == 0x1E)
+        {
+          // UTF-8:   000wwwxx xxxxyyyy yyzzzzzz
+          // Unicode: 11110www 10xxxxxx 10yyyyyy 10zzzzzz
+          //
+          s += 3;
+        }
+
+        if (unrep_char_ != '\0')
+          *r++ = unrep_char_;
+        else
+          return false;
+      }
+
+      *r = '\0';
+
+      return true;
+    }
+
+    bool iso8859_1::
+    to (const char* s, size_t n, char* r)
+    {
+      const char* end = s + n;
+
+      for (; s != end; ++s)
+      {
+        unsigned char c (*s);
+
+        if (c < 0x80)
+        {
+          // Fast path.
+          //
+          *r++ = c;
+          continue;
+        }
+        else if ((c >> 5) == 0x06)
+        {
+          // UTF-8:   110yyyyy 10zzzzzz
+          // Unicode: 00000yyy yyzzzzzz
+          //
+          unsigned int u = (c & 0x1F) << 6;
+          c = *++s;
+          u |= c & 0x3F;
+
+          if (u < 0x100)
+          {
+            *r++ = static_cast<char> (u);
+            continue;
+          }
+        }
+        else if ((c >> 4) == 0x0E)
+        {
+          // UTF-8:   1110xxxx 10yyyyyy 10zzzzzz
+          // Unicode: xxxxyyyy yyzzzzzz
+          //
+          s += 2;
+        }
+        else if ((c >> 3) == 0x1E)
+        {
+          // UTF-8:   000wwwxx xxxxyyyy yyzzzzzz
+          // Unicode: 11110www 10xxxxxx 10yyyyyy 10zzzzzz
+          //
+          s += 3;
+        }
+
+        if (unrep_char_ != '\0')
+          *r++ = unrep_char_;
+        else
+          return false;
+      }
+
+      *r = '\0';
+
+      return true;
+    }
+
+    void iso8859_1::
+    from (const char* s, char* r)
+    {
+      for (; *s != 0; ++s)
+      {
+        unsigned char c (*s);
+
+        if (c < 0x80)
+          *r++ = c;
+        else
+        {
+          // 2-byte sequence.
+          //
+          *r++ = (c >> 6) | 0xC0;
+          *r++ = (c | 0x80) & 0xBF;
+        }
+      }
+
+      *r = '\0';
+    }
+
+    void iso8859_1::
+    from (const char* s, size_t n, char* r)
+    {
+      const char* end = s + n;
+
+      for (; s != end; ++s)
+      {
+        unsigned char c (*s);
+
+        if (c < 0x80)
+          *r++ = c;
+        else
+        {
+          // 2-byte sequence.
+          //
+          *r++ = (c >> 6) | 0xC0;
+          *r++ = (c | 0x80) & 0xBF;
+        }
+      }
+
+      *r = '\0';
+    }
+  }
+}