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