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//========================================================================
//
// This file comes from pdftohtml project
// http://pdftohtml.sourceforge.net
//
// Copyright from:
// Gueorgui Ovtcharov
// Rainer Dorsch <http://www.ra.informatik.uni-stuttgart.de/~rainer/>
// Mikhail Kruk <meshko@cs.brandeis.edu>
//
//========================================================================
//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2008 Boris Toloknov <tlknv@yandex.ru>
// Copyright (C) 2010, 2021, 2022, 2024 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2013 Julien Nabet <serval2412@yahoo.fr>
// Copyright (C) 2025 g10 Code GmbH, Author: Sune Stolborg Vuorela <sune@vuorela.dk>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
#include "HtmlLinks.h"
extern bool xml;
HtmlLink::HtmlLink(const HtmlLink &x)
{
Xmin = x.Xmin;
Ymin = x.Ymin;
Xmax = x.Xmax;
Ymax = x.Ymax;
dest = x.dest->copy();
}
HtmlLink::HtmlLink(double xmin, double ymin, double xmax, double ymax, std::unique_ptr<GooString> &&_dest) : dest(std::move(_dest))
{
if (xmin < xmax) {
Xmin = xmin;
Xmax = xmax;
} else {
Xmin = xmax;
Xmax = xmin;
}
if (ymin < ymax) {
Ymin = ymin;
Ymax = ymax;
} else {
Ymin = ymax;
Ymax = ymin;
}
}
HtmlLink::~HtmlLink() = default;
bool HtmlLink::isEqualDest(const HtmlLink &x) const
{
return (!strcmp(dest->c_str(), x.dest->c_str()));
}
bool HtmlLink::inLink(double xmin, double ymin, double xmax, double ymax) const
{
double y = (ymin + ymax) / 2;
if (y > Ymax) {
return false;
}
return (y > Ymin) && (xmin < Xmax) && (xmax > Xmin);
}
// returns nullptr if same as input string (to avoid copying)
static std::unique_ptr<GooString> EscapeSpecialChars(GooString *s)
{
std::unique_ptr<GooString> tmp;
for (size_t i = 0, j = 0; i < s->size(); i++, j++) {
const char *replace = nullptr;
switch (s->getChar(i)) {
case '"':
replace = """;
break;
case '&':
replace = "&";
break;
case '<':
replace = "<";
break;
case '>':
replace = ">";
break;
default:
continue;
}
if (replace) {
if (!tmp) {
tmp = s->copy();
}
if (tmp) {
tmp->erase(j, 1);
int l = strlen(replace);
tmp->insert(j, replace, l);
j += l - 1;
}
}
}
return tmp;
}
std::unique_ptr<GooString> HtmlLink::getLinkStart() const
{
std::unique_ptr<GooString> res = std::make_unique<GooString>("<a href=\"");
std::unique_ptr<GooString> d = xml ? EscapeSpecialChars(dest.get()) : nullptr;
res->append(d ? d.get() : dest.get());
res->append("\">");
return res;
}
/*GooString* HtmlLink::Link(GooString* content){
//GooString* _dest=new GooString(dest);
GooString *tmp=new GooString("<a href=\"");
tmp->append(dest);
tmp->append("\">");
tmp->append(content);
tmp->append("</a>");
//delete _dest;
return tmp;
}*/
HtmlLinks::HtmlLinks() = default;
HtmlLinks::~HtmlLinks() = default;
bool HtmlLinks::inLink(double xmin, double ymin, double xmax, double ymax, size_t &p) const
{
for (std::vector<HtmlLink>::const_iterator i = accu.begin(); i != accu.end(); ++i) {
if (i->inLink(xmin, ymin, xmax, ymax)) {
p = (i - accu.begin());
return true;
}
}
return false;
}
const HtmlLink *HtmlLinks::getLink(size_t i) const
{
return &accu[i];
}
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