Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
guru.nidi.graphviz.engine.Format Maven / Gradle / Ivy
/*
* Copyright © 2015 Stefan Niederhauser ([email protected] )
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package guru.nidi.graphviz.engine;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public enum Format {
PNG("svg", "png", true, true) {
@Override
String preProcess(String src) {
return encodeXml(super.preProcess(src));
}
@Override
EngineResult postProcess(Graphviz graphviz, EngineResult result) {
return result.mapString(s -> postProcessSvg(graphviz, s, true));
}
},
SVG("svg", "svg", false, true) {
@Override
String preProcess(String src) {
return encodeXml(super.preProcess(src));
}
@Override
EngineResult postProcess(Graphviz graphviz, EngineResult result) {
return result.mapString(s -> postProcessSvg(graphviz, s, true));
}
},
SVG_STANDALONE("svg", "svg", false, true) {
@Override
String preProcess(String src) {
return encodeXml(super.preProcess(src));
}
@Override
EngineResult postProcess(Graphviz graphviz, EngineResult result) {
return result.mapString(s -> postProcessSvg(graphviz, s, false));
}
},
DOT("dot", "dot", false, false),
XDOT("xdot", "xdot", false, false),
PLAIN("plain", "txt", false, false),
PLAIN_EXT("plain-ext", "txt", false, false),
PS("ps", "ps", false, false),
PS2("ps2", "ps", false, false),
JSON("json", "json", false, false),
JSON0("json0", "json", false, false);
private static final Logger LOG = LoggerFactory.getLogger(Format.class);
private static final Pattern FONT_PATTERN = Pattern.compile("font-size=\"(.*?)\"");
private static final Pattern SVG_PATTERN = Pattern.compile(
"\\d+)(?p[tx])\" height=\"(?\\d+)p[tx]\""
+ "(?.*?>\\R[0-9.]+) (?[0-9.]+)\\)",
Pattern.DOTALL);
final String vizName;
public final String fileExtension;
final boolean image;
final boolean svg;
Format(String vizName, String fileExtension, boolean image, boolean svg) {
this.vizName = vizName;
this.fileExtension = fileExtension;
this.image = image;
this.svg = svg;
}
String preProcess(String src) {
return replaceSubSpaces(src);
}
EngineResult postProcess(Graphviz graphviz, EngineResult result) {
return result;
}
private static String replaceSubSpaces(String src) {
final char[] chars = src.toCharArray();
for (int i = 0; i < chars.length; i++) {
if (chars[i] < ' ' && chars[i] != '\t' && chars[i] != '\r' && chars[i] != '\n') {
chars[i] = ' ';
}
}
return new String(chars);
}
private static String encodeXml(String src) {
return src.replace("&", "&");
}
private static String postProcessSvg(Graphviz graphviz, String result, boolean prefix) {
final String unprefixed = prefix ? withoutPrefix(result) : result;
final String pixelSized = pointsToPixels(unprefixed, graphviz.dpi(),
graphviz.width, graphviz.height, graphviz.scale);
return graphviz.fontAdjust == 1 ? pixelSized : fontAdjusted(pixelSized, graphviz.fontAdjust);
}
private static String withoutPrefix(String svg) {
final int pos = svg.indexOf(" 0 && height > 0) {
w = width;
h = height;
} else if (width > 0) {
h *= width / w;
w = width;
} else if (height > 0) {
w *= height / h;
h = height;
}
return "width=\"" + Math.round(w * scale) + "px\" height=\"" + Math.round(h * scale) + "px\"";
}
private static String svgScale(Matcher m, double dpi) {
final double pixelScale = m.group("unit").equals("px") ? 1 : Math.round(10000 * dpi / 72) / 10000d;
final double scaleX = Double.parseDouble(m.group("scaleX")) / pixelScale;
final double scaleY = Double.parseDouble(m.group("scaleY")) / pixelScale;
return "transform=\"scale(" + scaleX + " " + scaleY + ")";
}
private static String fontAdjusted(String svg, double fontAdjust) {
final Matcher m = FONT_PATTERN.matcher(svg);
final StringBuffer s = new StringBuffer();
while (m.find()) {
String rep;
try {
rep = "font-size=\"" + Double.parseDouble(m.group(1)) * fontAdjust + "\"";
} catch (NumberFormatException e) {
rep = m.group();
}
m.appendReplacement(s, rep);
}
m.appendTail(s);
return s.toString();
}
}
