src/insets/InsetHyperlink.cpp

   1 /**
   2  * \file InsetHyperlink.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author José Matos
   7  * \author Uwe Stöhr
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "InsetHyperlink.h"
  15
  16 #include "DispatchResult.h"
  17 #include "FuncRequest.h"
  18 #include "LaTeXFeatures.h"
  19 #include "gettext.h"
  20 #include "OutputParams.h"
  21
  22 #include "support/lstrings.h"
  23
  24 #include "support/std_ostream.h"
  25
  26
  27 namespace lyx {
  28
  29 using support::subst;
  30
  31 using std::string;
  32 using std::ostream;
  33 using std::find;
  34 using std::replace;
  35
  36 static char const * const chars_url[2] = {"%", "#"};
  37
  38 static char const * const chars_name[6] = {
  39         "&", "_", "$", "%", "#", "^"};
  40
  41
  42 InsetHyperlink::InsetHyperlink(InsetCommandParams const & p)
  43         : InsetCommand(p, "href")
  44 {}
  45
  46
  47 CommandInfo const * InsetHyperlink::findInfo(std::string const & /* cmdName */)
  48 {
  49         static const char * const paramnames[] =
  50                 {"name", "target", ""};
  51         static const bool isoptional[] = {true, false};
  52         static const CommandInfo info = {2, paramnames, isoptional};
  53         return &info;
  54 }
  55
  56
  57 docstring const InsetHyperlink::getScreenLabel(Buffer const &) const
  58 {
  59         docstring const temp = from_ascii("Hyperlink: ");
  60
  61         docstring url;
  62
  63         url += getParam("name");
  64         if (url.empty())
  65                 url += getParam("target");
  66
  67         // elide if long
  68         if (url.length() > 30) {
  69                 url = url.substr(0, 10) + "..."
  70                         + url.substr(url.length() - 17, url.length());
  71         }
  72         return temp + url;
  73 }
  74
  75
  76 int InsetHyperlink::latex(Buffer const &, odocstream & os,
  77                     OutputParams const & runparams) const
  78 {
  79         string url = to_utf8(getParam("target"));
  80
  81         string backslash = "\\";
  82         string braces = "{}";
  83
  84         // The characters in chars_url[] need to be changed to a command when
  85         // they are in the url field.
  86         if (!url.empty()) {
  87                 // the chars_url[] characters must be handled for both, url and href
  88                 for (int k = 0; k < 2; k++) {
  89                         for (int i = 0, pos;
  90                                 (pos = url.find(chars_url[k], i)) != string::npos;
  91                                 i = pos + 2) {
  92                                 url.replace(pos,1,backslash + chars_url[k]);
  93                         }
  94                 }
  95         } // end if (!url.empty())
  96
  97         string name = to_utf8(getParam("name"));
  98
  99         // The characters in chars_name[] need to be changed to a command when
 100         // they are in the name field.
 101         if (!name.empty()) {
 102
 103                 // handle the "\" character, but only when the following character
 104                 // is not also a "\", because "\\" is valid code
 105                 for (int i = 0, pos;
 106                         (pos = name.find("\\", i)) != string::npos;
 107                         i = pos + 2) {
 108                         if      (name[pos+1] != '\\')
 109                                 name.replace(pos,1,"\\textbackslash{}");
 110                 }
 111                 for (int k = 0; k < 6; k++) {
 112                         for (int i = 0, pos;
 113                                 (pos = name.find(chars_name[k], i)) != string::npos;
 114                                 i = pos + 2) {
 115                                 name.replace(pos,1,backslash + chars_name[k] + braces);
 116                         }
 117                 }
 118                 // replace the tilde by the \sim character as suggested in the LaTeX FAQ
 119                 // for URLs
 120                 for (int i = 0, pos;
 121                         (pos = name.find("~", i)) != string::npos;
 122                         i = pos + 1)
 123                         name.replace(pos,1,"$\\sim$");
 124
 125         }  // end if (!name.empty())
 126
 127         if (runparams.moving_arg)
 128                 os << "\\protect";
 129         //set the target for the name when no name is given
 130         if (!name.empty())
 131                 os << "\\href{" << from_utf8(url) << "}{" << from_utf8(name) << '}';
 132         else
 133                 os << "\\href{" << from_utf8(url) << "}{" << from_utf8(url) << '}';
 134         return 0;
 135 }
 136
 137
 138 int InsetHyperlink::plaintext(Buffer const &, odocstream & os,
 139                         OutputParams const &) const
 140 {
 141         odocstringstream oss;
 142
 143         oss << '[' << getParam("target");
 144         if (getParam("name").empty())
 145                 oss << ']';
 146         else
 147                 oss << "||" << getParam("name") << ']';
 148
 149         docstring const str = oss.str();
 150         os << str;
 151         return str.size();
 152 }
 153
 154
 155 int InsetHyperlink::docbook(Buffer const &, odocstream & os,
 156                       OutputParams const &) const
 157 {
 158         os << "<ulink url=\""
 159            << subst(getParam("target"), from_ascii("&"), from_ascii("&amp;"))
 160            << "\">"
 161            << getParam("name")
 162            << "</ulink>";
 163         return 0;
 164 }
 165
 166
 167 int InsetHyperlink::textString(Buffer const & buf, odocstream & os,
 168                        OutputParams const & op) const
 169 {
 170         return plaintext(buf, os, op);
 171 }
 172
 173
 174 void InsetHyperlink::validate(LaTeXFeatures & features) const
 175 {
 176         features.require("hyperref");
 177 }
 178
 179
 180 } // namespace lyx