* Added TextElementValue*.

* The curl perform loop wasn't properly checking the returned pointer,
which caused a segfault with libcurl 7.15.5.


git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@754 e378c898-3ddf-0310-93e7-cc216c733640

src/display/Makefile.am

@@ -17,6 +17,8 @@ libsub_display_a_SOURCES = \
 	text_element_list.h \
 	text_element_string.cc \
 	text_element_string.h \
+	text_element_value.cc \
+	text_element_value.h \
 	window.cc \
 	window.h \
 	window_download_chunks_seen.cc \

src/display/text_element_list.cc

@@ -38,6 +38,7 @@
 
 #include <algorithm>
 #include <rak/functional.h>
+#include <torrent/exceptions.h>
 
 #include "text_element_list.h"
 
@@ -59,8 +60,14 @@ TextElementList::print(char* first, const char* last, Canvas::attributes_list* a
     if (column-- > 0) {
       const char* columnEnd = std::min<const char*>(last, first + *m_columnWidth);
 
+      if (columnEnd < first || columnEnd > last)
+        throw torrent::client_error("TextElementList::print(...) columnEnd < first || columnEnd > last.");
+
       first = (*itr)->print(first, columnEnd, attributes, object);
 
+      if (first > columnEnd)
+        throw torrent::client_error("TextElementList::print(...) first > columnEnd.");
+
       std::memset(first, ' ', columnEnd - first);
       first += columnEnd - first;
 

src/display/text_element_string.cc

@@ -70,19 +70,18 @@ char*
 TextElementString::copy_string(char* first, const char* last, void* object) {
   extent_type length = std::min<extent_type>(last - first, m_string.size());
   
-  if (length == 0)
-    return first;
-
-  std::memcpy(first, m_string.c_str(), std::min<extent_type>(length, last - first));
+  std::memcpy(first, m_string.c_str(), length);
 
   return first + length;
 }
 
 char*
 TextElementCString::copy_string(char* first, const char* last, void* object) {
-  std::memcpy(first, m_string, std::min<extent_type>(m_length, last - first));
+  extent_type length = std::min<extent_type>(last - first, m_length);
 
-  return first + m_length;
+  std::memcpy(first, m_string, length);
+
+  return first + length;
 }
 
 }

src/display/text_element_string.h

@@ -34,8 +34,8 @@
 //           Skomakerveien 33
 //           3185 Skoppum, NORWAY
 
-#ifndef RTORRENT_DISPLAY_TEXT_ELEMENT_LIST_H
-#define RTORRENT_DISPLAY_TEXT_ELEMENT_LIST_H
+#ifndef RTORRENT_DISPLAY_TEXT_ELEMENT_STRING_H
+#define RTORRENT_DISPLAY_TEXT_ELEMENT_STRING_H
 
 #include <iterator>
 #include <string>

src/display/text_element_value.cc

@@ -0,0 +1,70 @@
+// rTorrent - BitTorrent client
+// Copyright (C) 2005-2006, Jari Sundell
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+// 
+// This program 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 General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// In addition, as a special exception, the copyright holders give
+// permission to link the code of portions of this program with the
+// OpenSSL library under certain conditions as described in each
+// individual source file, and distribute linked combinations
+// including the two.
+//
+// You must obey the GNU General Public License in all respects for
+// all of the code used other than OpenSSL.  If you modify file(s)
+// with this exception, you may extend this exception to your version
+// of the file(s), but you are not obligated to do so.  If you do not
+// wish to do so, delete this exception statement from your version.
+// If you delete this exception statement from all source files in the
+// program, then also delete it here.
+//
+// Contact:  Jari Sundell <jaris@ifi.uio.no>
+//
+//           Skomakerveien 33
+//           3185 Skoppum, NORWAY
+
+#include "config.h"
+
+#include "text_element_value.h"
+
+namespace display {
+
+char*
+TextElementValueBase::print(char* first, const char* last, Canvas::attributes_list* attributes, void* object) {
+  // Move this stuff into a function in TextElement.
+  Attributes base = attributes->back();
+  Attributes current(NULL, m_attributes, Attributes::color_invalid);
+
+  if (current.attributes() == Attributes::a_invalid)
+    current.set_attributes(base.attributes());
+  else if (current.attributes() != base.attributes())
+    current.set_position(first);
+
+  if (current.colors() == Attributes::color_invalid)
+    current.set_colors(base.colors());
+  else if (current.colors() != base.colors())
+    current.set_position(first);
+
+//   first += std::max(snprintf(first, last - first + 1, m_format, value(object)), 0);
+  first += std::max(snprintf(first, last - first, "%lld", value(object)), 0);
+
+  if (current.position() != NULL) {
+    attributes->push_back(current);
+    attributes->push_back(Attributes(first, base.attributes(), base.colors()));
+  }
+
+  return first;
+}
+
+}

src/display/text_element_value.h

@@ -0,0 +1,123 @@
+// rTorrent - BitTorrent client
+// Copyright (C) 2005-2006, Jari Sundell
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+// 
+// This program 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 General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// In addition, as a special exception, the copyright holders give
+// permission to link the code of portions of this program with the
+// OpenSSL library under certain conditions as described in each
+// individual source file, and distribute linked combinations
+// including the two.
+//
+// You must obey the GNU General Public License in all respects for
+// all of the code used other than OpenSSL.  If you modify file(s)
+// with this exception, you may extend this exception to your version
+// of the file(s), but you are not obligated to do so.  If you do not
+// wish to do so, delete this exception statement from your version.
+// If you delete this exception statement from all source files in the
+// program, then also delete it here.
+//
+// Contact:  Jari Sundell <jaris@ifi.uio.no>
+//
+//           Skomakerveien 33
+//           3185 Skoppum, NORWAY
+
+#ifndef RTORRENT_DISPLAY_TEXT_ELEMENT_VALUE_H
+#define RTORRENT_DISPLAY_TEXT_ELEMENT_VALUE_H
+
+#include <cstring>
+#include <inttypes.h>
+
+#include "text_element.h"
+
+namespace display {
+
+class TextElementValueBase : public TextElement {
+public:
+  static const extent_type max_format_length = 12;
+
+  int                 attributes() const            { return m_attributes; }
+  void                set_attributes(int a)         { m_attributes = a; }
+
+  void                set_format(const char* f);
+
+  virtual char*       print(char* first, const char* last, Canvas::attributes_list* attributes, void* object);
+
+protected:
+  virtual int64_t     value(void* object) = 0;
+
+  int                 m_attributes;
+  char                m_format[max_format_length];
+};
+
+inline void
+TextElementValueBase::set_format(const char* f) {
+  std::strncpy(m_format, f, max_format_length);
+  m_format[max_format_length - 1] = '\0';
+}
+
+class TextElementValue : public TextElementValueBase {
+public:
+  TextElementValue(int64_t value, int attributes = Attributes::a_invalid) : m_value(value) {
+    m_attributes = attributes;
+    set_format("%lld");
+  }
+
+  int64_t             value() const                 { return m_value; }
+  void                set_value(int64_t v)          { m_value = v; }
+
+private:
+  virtual extent_type max_length()                  { return 12; }
+
+  virtual int64_t     value(void* object)           { return m_value; }
+
+  int64_t             m_value;
+};
+
+template <typename slot_type>
+class TextElementValueSlot : public TextElementValueBase {
+public:
+  typedef typename slot_type::argument_type arg1_type;
+  typedef typename slot_type::result_type   result_type;
+
+  TextElementValueSlot(const slot_type& slot, int attributes = Attributes::a_invalid) : m_slot(slot) {
+    m_attributes = attributes;
+    set_format("%lld");
+  }
+
+private:
+  virtual extent_type max_length()                  { return 12; }
+
+  virtual int64_t value(void* object) {
+    arg1_type arg1 = reinterpret_cast<arg1_type>(object);
+
+    if (arg1 == NULL)
+      return 0;
+
+    return m_slot(arg1);
+  }
+
+  slot_type           m_slot;
+};
+
+template <typename slot_type>
+inline TextElementValueSlot<slot_type>*
+text_element_value_slot(const slot_type& slot, int attributes = Attributes::a_invalid) {
+  return new TextElementValueSlot<slot_type>(slot, attributes);
+}
+
+}
+
+#endif

src/display/window_text.cc

@@ -75,6 +75,7 @@ WindowText::redraw() {
   m_canvas->erase();
 
   unsigned int position = 0;
+  Canvas::attributes_list attributes;
 
   for (iterator itr = begin(); itr != end() && position < m_canvas->height(); ++itr, ++position) {
     if (*itr == NULL)
@@ -83,7 +84,7 @@ WindowText::redraw() {
     char buffer[m_canvas->width() + 1];
 
     // Add a print function that sets up attributes etc?
-    Canvas::attributes_list attributes;
+    attributes.clear();
     attributes.push_back(Attributes(buffer, Attributes::a_normal, Attributes::color_default));
 
     char* last = (*itr)->print(buffer, buffer + m_canvas->width(), &attributes, m_object);