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/* This file is part of the KDE project
Copyright (C) 2013 Jos van den Oever <jos@vandenoever.info>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "helpers.h"
using namespace writeodf;
namespace {
template <typename T>
void
addTab(T& e, int ref) {
text_tab tab = e.add_text_tab();
if (ref >= 0) {
tab.set_text_tab_ref(ref);
}
}
}
void writeodf::addTextSpan(group_paragraph_content& content, const QString& text, const QMap<int, int>& tabCache)
{
int len = text.length();
int nrSpaces = 0; // number of consecutive spaces
bool leadingSpace = false;
QString str;
str.reserve(len);
// Accumulate chars either in str or in nrSpaces (for spaces).
// Flush str when writing a subelement (for spaces or for another reason)
// Flush nrSpaces when encountering two or more consecutive spaces
for (int i = 0; i < len ; ++i) {
const QChar ch = text[i];
ushort unicode = ch.unicode();
if (unicode == ' ') {
if (i == 0) {
leadingSpace = true;
}
++nrSpaces;
} else {
if (nrSpaces > 0) {
// For the first space we use ' '.
// "it is good practice to use (text:s) for the second and all following SPACE
// characters in a sequence." (per the ODF spec)
// however, per the HTML spec, "authors should not rely on user agents to render
// white space immediately after a start tag or immediately before an end tag"
// (and both we and OO.o ignore leading spaces in <text:p> or <text:h> elements...)
if (!leadingSpace) {
str += ' ';
--nrSpaces;
}
if (nrSpaces > 0) { // there are more spaces
if (!str.isEmpty()) {
content.addTextNode(str);
}
str.clear();
text_s s = content.add_text_s();
if (nrSpaces > 1) { // it's 1 by default
s.set_text_c(nrSpaces);
}
}
}
nrSpaces = 0;
leadingSpace = false;
switch (unicode) {
case '\t':
if (!str.isEmpty()) {
content.addTextNode(str);
}
str.clear();
addTab(content, tabCache.contains(i) ?tabCache[i] + 1 :-1);
break;
// gracefully handle \f form feed in text input.
// otherwise the xml will not be valid.
// \f can be added e.g. in ascii import filter.
case '\f':
case '\n':
case QChar::LineSeparator:
if (!str.isEmpty()) {
content.addTextNode(str);
}
str.clear();
content.add_text_line_break();
break;
default:
// don't add stuff that is not allowed in xml. The stuff we need we have already handled above
if (ch.unicode() >= 0x20) {
str += ch;
}
break;
}
}
}
// either we still have text in str or we have spaces in nrSpaces
if (!str.isEmpty()) {
content.addTextNode(str);
}
if (nrSpaces > 0) { // there are more spaces
text_s s = content.add_text_s();
if (nrSpaces > 1) { // it's 1 by default
s.set_text_c(nrSpaces);
}
}
}
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