STYLE: move the code for the different formats of the generated help into

their own classes, making cmDocumentation smaller and also making it easier
to eventually add another format

Alex

Source/cmDocumentationFormatterHTML.cxx

@@ -0,0 +1,189 @@
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even 
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#include "cmDocumentationFormatterHTML.h"
+
+//----------------------------------------------------------------------------
+static bool cmDocumentationIsHyperlinkChar(char c)
+{
+  // This is not a complete list but works for CMake documentation.
+  return ((c >= 'A' && c <= 'Z') ||
+          (c >= 'a' && c <= 'z') ||
+          (c >= '0' && c <= '9') ||
+          c == '-' || c == '.' || c == '/' || c == '~' || c == '@' ||
+          c == ':' || c == '_' || c == '&' || c == '?' || c == '=');
+}
+
+//----------------------------------------------------------------------------
+static void cmDocumentationPrintHTMLChar(std::ostream& os, char c)
+{
+  // Use an escape sequence if necessary.
+  static cmDocumentationEntry escapes[] =
+  {
+    {"<", "&lt;", 0},
+    {">", "&gt;", 0},
+    {"&", "&amp;", 0},
+    {"\n", "<br>", 0},
+    {0,0,0}
+  };
+  for(const cmDocumentationEntry* op = escapes; op->name; ++op)
+    {
+    if(op->name[0] == c)
+      {
+      os << op->brief;
+      return;
+      }
+    }
+
+  // No escape sequence is needed.
+  os << c;
+}
+
+//----------------------------------------------------------------------------
+const char* cmDocumentationPrintHTMLLink(std::ostream& os, const char* begin)
+{
+  // Look for the end of the link.
+  const char* end = begin;
+  while(cmDocumentationIsHyperlinkChar(*end))
+    {
+    ++end;
+    }
+
+  // Print the hyperlink itself.
+  os << "<a href=\"";
+  for(const char* c = begin; c != end; ++c)
+    {
+    cmDocumentationPrintHTMLChar(os, *c);
+    }
+  os << "\">";
+
+  // The name of the hyperlink is the text itself.
+  for(const char* c = begin; c != end; ++c)
+    {
+    cmDocumentationPrintHTMLChar(os, *c);
+    }
+  os << "</a>";
+
+  // Return the position at which to continue scanning the input
+  // string.
+  return end;
+}
+
+
+cmDocumentationFormatterHTML::cmDocumentationFormatterHTML()
+:cmDocumentationFormatter()
+{
+}
+
+void cmDocumentationFormatterHTML::PrintSection(std::ostream& os,
+                                           const cmDocumentationEntry* section,
+                                           const char* name)
+{
+  if(name)
+    {
+    os << "<h2>" << name << "</h2>\n";
+    }
+  if(!section) { return; }
+  for(const cmDocumentationEntry* op = section; op->brief;)
+    {
+    if(op->name)
+      {
+      os << "<ul>\n";
+      for(;op->name;++op)
+        {
+        os << "  <li>\n";
+        if(op->name[0])
+          {
+          os << "    <b><code>";
+          this->PrintHTMLEscapes(os, op->name);
+          os << "</code></b>: ";
+          }
+        this->PrintHTMLEscapes(os, op->brief);
+        if(op->full)
+          {
+          os << "<br>\n    ";
+          this->PrintFormatted(os, op->full);
+          }
+        os << "\n";
+        os << "  </li>\n";
+        }
+      os << "</ul>\n";
+      }
+    else
+      {
+      this->PrintFormatted(os, op->brief);
+      os << "\n";
+      ++op;
+      }
+    }
+}
+
+void cmDocumentationFormatterHTML::PrintPreformatted(std::ostream& os, 
+                                                     const char* text)
+{
+  os << "<pre>";
+  this->PrintHTMLEscapes(os, text);
+  os << "</pre>\n    ";
+}
+
+void cmDocumentationFormatterHTML::PrintParagraph(std::ostream& os, 
+                                                  const char* text)
+{
+  os << "<p>";
+  this->PrintHTMLEscapes(os, text);
+}
+
+//----------------------------------------------------------------------------
+void cmDocumentationFormatterHTML::PrintHeader(const char* name, 
+                                               std::ostream& os)
+{
+  os << "<html><body>\n";
+}
+
+//----------------------------------------------------------------------------
+void cmDocumentationFormatterHTML::PrintFooter(std::ostream& os)
+{
+  os << "</body></html>\n";
+}
+
+//----------------------------------------------------------------------------
+void cmDocumentationFormatterHTML::PrintHTMLEscapes(std::ostream& os, 
+                                                    const char* text)
+{
+  // Hyperlink prefixes.
+  static const char* hyperlinks[] = {"http://", "ftp://", "mailto:", 0};
+
+  // Print each character.
+  for(const char* p = text; *p;)
+    {
+    // Handle hyperlinks specially to make them active.
+    bool found_hyperlink = false;
+    for(const char** h = hyperlinks; !found_hyperlink && *h; ++h)
+      {
+      if(strncmp(p, *h, strlen(*h)) == 0)
+        {
+        p = cmDocumentationPrintHTMLLink(os, p);
+        found_hyperlink = true;
+        }
+      }
+
+    // Print other characters normally.
+    if(!found_hyperlink)
+      {
+      cmDocumentationPrintHTMLChar(os, *p++);
+      }
+    }
+}