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/*************************************************************************
** XMLString.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2020 Martin Gieseking <martin.gieseking@uos.de> **
** **
** This program is free software; you can redistribute it and/or **
** modify it under the terms of the GNU General Public License as **
** published by the Free Software Foundation; either version 3 of **
** the License, or (at your option) any later version. **
** **
** This program 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 General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#include <cmath>
#include <cstdlib>
#include "Unicode.hpp"
#include "utility.hpp"
#include "XMLString.hpp"
using namespace std;
int XMLString::DECIMAL_PLACES = 0;
static string translate (uint32_t c) {
switch (c) {
case '<' : return "<";
case '&' : return "&";
case '"' : return """;
case '\'': return "'";
}
return Unicode::utf8(c);
}
XMLString::XMLString (const string &str, bool plain) {
if (plain)
assign(str);
else {
for (char c : str)
append(translate(c));
}
}
XMLString::XMLString (const char *str, bool plain) {
if (str) {
if (plain)
assign(str);
else {
while (*str)
append(translate(*str++));
}
}
}
XMLString::XMLString (int n, bool cast)
: string(cast ? to_string(n) : translate(n))
{
}
/** Rounds a floating point value to a given number of decimal places.
* @param[in] x number to round
* @param[in] n number of decimal places (must be between 1 and 6)
* @return rounded value */
static inline double round (double x, int n) {
const long pow10[] = {10L, 100L, 1000L, 10000L, 100000L, 1000000L};
const double eps = 1e-7;
n--;
if (x >= 0)
return floor(x*pow10[n]+0.5+eps)/pow10[n];
return ceil(x*pow10[n]-0.5-eps)/pow10[n];
}
XMLString::XMLString (double x) {
if (DECIMAL_PLACES > 0) {
// don't use fixed and setprecision() manipulators here to avoid
// banker's rounding applied in some STL implementations
x = round(x, DECIMAL_PLACES);
}
if (std::abs(x) < 1e-6)
x = 0;
assign(util::to_string(x));
size_t pos = find("0.");
if (pos != string::npos && (pos == 0 || at(pos-1) == '-'))
erase(pos, 1);
}
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