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Code Issues Releases Wiki Activity

Revised newlines (draft)

This commit is contained in:
M66B 2020-11-06 19:39:31 +01:00
parent 9dc71d2a46
commit dcc53885d4
1 changed files with 71 additions and 127 deletions
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198
app/src/main/java/eu/faircode/email/HtmlHelper.java
View File

@ -77,7 +77,6 @@ import com.steadystate.css.parser.selectors.ClassConditionImpl;
import com.steadystate.css.parser.selectors.ConditionalSelectorImpl;
import com.steadystate.css.parser.selectors.ElementSelectorImpl;
import org.jsoup.internal.StringUtil;
import org.jsoup.nodes.Attribute;
import org.jsoup.nodes.Comment;
import org.jsoup.nodes.Document;
@ -442,7 +441,6 @@ public class HtmlHelper {
// Limit length
if (view && truncate(parsed, true)) {
parsed.body()
.appendElement("br")
.appendElement("p")
.appendElement("em")
.text(context.getString(R.string.title_too_large));
@ -741,34 +739,18 @@ public class HtmlHelper {
}
}
if (element.isBlock())
if (element.isBlock() &&
!"true".equals(element.attr("x-inline")))
element.attr("x-block", "true");
}
// Remove trailing br from div
for (Element div : document.select("div")) {
boolean inline = Boolean.parseBoolean(div.attr("x-inline"));
if (!inline && hasVisibleContent(div, true)) {
Element last = div.lastElementSibling();
if (last != null && "br".equals(last.tagName()))
last.remove();
}
}
// Replace headings
for (Element h : document.select("h1,h2,h3,h4,h5,h6")) {
if (!"false".equals(h.attr("x-line-after")))
h.appendElement("br");
if (!text_size) {
h.appendElement("br");
h.tagName("strong");
}
}
if (!text_size)
document.select("h1,h2,h3,h4,h5,h6").tagName("strong");
// Paragraphs
for (Element p : document.select("p")) {
if (!"false".equals(p.attr("x-line-after")))
p.appendElement("br");
p.attr("x-paragraph", "true");
p.tagName("div");
}
@ -816,13 +798,11 @@ public class HtmlHelper {
// Descriptions
// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dl
document.select("dl").tagName("div");
for (Element dt : document.select("dt")) {
for (Element dt : document.select("dt"))
dt.tagName("strong");
dt.appendElement("br");
}
for (Element dd : document.select("dd")) {
dd.tagName("em");
dd.appendElement("br").appendElement("br");
dd.attr("x-line-after", "true");
}
// Abbreviations
@ -839,10 +819,7 @@ public class HtmlHelper {
// Tables
// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/table
for (Element col : document.select("th,td")) {
// separate columns
if (hasVisibleContent(col, false))
if (col.nextElementSibling() != null)
col.append(" ");
col.attr("x-col", "true");
if ("th".equals(col.tagName()))
col.tagName("strong");
@ -850,18 +827,8 @@ public class HtmlHelper {
col.tagName("span");
}
for (Element row : document.select("tr")) {
row.tagName("span");
if (hasVisibleContent(row, true)) {
Element next = row.nextElementSibling();
if (next != null && "tr".equals(next.tagName()))
if (text_separators && view)
row.appendElement("hr")
.attr("x-dashed", "true");
else
row.appendElement("br");
}
}
for (Element row : document.select("tr"))
row.tagName("span").attr("x-row", "true");
document.select("caption").tagName("div");
@ -1014,29 +981,8 @@ public class HtmlHelper {
}
// Selective new lines
for (Element div : document.select("div")) {
boolean inline = Boolean.parseBoolean(div.attr("x-inline"));
if (!inline && hasVisibleContent(div, true))
div.attr("x-line-after", "true");
for (Element div : document.select("div"))
div.tagName("span");
}
for (Element e : document.select("*[x-line-before],*[x-line-after]")) {
if ("true".equals(e.attr("x-line-before"))) {
Element prev = e.previousElementSibling();
if (prev == null || !"br".equals(prev.tagName()))
e.prependElement("br");
}
if ("true".equals(e.attr("x-line-after"))) {
Element next = e.nextElementSibling();
if (next == null || !"br".equals(next.tagName()))
e.appendElement("br");
}
e.removeAttr("x-line-before");
e.removeAttr("x-line-after");
}
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N)
for (Element span : document.select("span"))
@ -1369,30 +1315,6 @@ public class HtmlHelper {
return (color & 0xFFFFFF);
}
private static boolean hasVisibleContent(Element root, boolean block) {
for (Node node : root.childNodes())
if (node instanceof TextNode) {
String text = ((TextNode) node).getWholeText();
for (int i = 0; i < text.length(); i++) {
char kar = text.charAt(i);
if (!StringUtil.isWhitespace(kar) && kar != '\u00a0' /* nbsp */)
return true;
}
} else if (node instanceof Element) {
Element element = (Element) node;
if (element.hasText())
return true;
if (block && "true".equals(element.attr("x-block")))
return false;
if (element.selectFirst("img[src~=.+]") != null)
return true;
for (Element a : element.select("a[href~=.+]"))
if (a.childNodes().size() > 0)
return true;
}
return false;
}
// https://tools.ietf.org/html/rfc3676
static String flow(String text) {
boolean continuation = false;
@ -2061,12 +1983,39 @@ public class HtmlHelper {
NodeTraversor.traverse(new NodeVisitor() {
private Element element;
private TextNode tnode;
private int rows = 0;
private int cols = 0;
@Override
public void head(Node node, int depth) {
if (node instanceof Element) {
element = (Element) node;
if (rows == 0) {
if ("true".equals(element.attr("x-block")))
if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
ssb.append('\n');
if ("true".equals(element.attr("x-paragraph")))
if (ssb.length() > 2 &&
(ssb.charAt(ssb.length() - 2) != '\n' ||
ssb.charAt(ssb.length() - 1) != '\n'))
ssb.append('\n');
}
if ("true".equals(element.attr("x-row"))) {
rows++;
if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
ssb.append('\n');
}
if ("true".equals(element.attr("x-col")))
cols++;
if ("true".equals(element.attr("x-line-before")) &&
ssb.length() > 0 && ssb.charAt(ssb.length() - 1) == '\n')
ssb.append('\n');
element.attr("start-index", Integer.toString(ssb.length()));
if (debug)
ssb.append("[" + element.tagName() + ":" + element.attr("style") + "]");
} else if (node instanceof TextNode) {
@ -2085,8 +2034,6 @@ public class HtmlHelper {
if (node instanceof Element) {
element = (Element) node;
int start = Integer.parseInt(element.attr("start-index"));
if (debug)
ssb.append("[/" + element.tagName() + "]");
// Apply style
String style = element.attr("style");
@ -2131,19 +2078,8 @@ public class HtmlHelper {
setSpan(ssb, new StrikethroughSpan(), start, ssb.length());
break;
case "text-align":
boolean table = false;
Element e = element;
while (e != null) {
if ("table".equals(e.tagName()) ||
"true".equals(e.attr("x-table"))) {
table = true;
break;
}
e = e.parent();
}
// https://developer.mozilla.org/en-US/docs/Web/CSS/text-align
if (!table) {
if (rows == 0) {
Layout.Alignment alignment = null;
switch (value) {
case "left":
@ -2207,12 +2143,10 @@ public class HtmlHelper {
setSpan(ssb, new QuoteSpan(colorPrimary, dp3, dp6), start, ssb.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
break;
case "br":
newline(ssb.length());
ssb.append('\n');
break;
case "div": // compose
case "p": // compose
newline(ssb.length());
newline(ssb.length());
break;
case "i":
case "em":
@ -2232,8 +2166,6 @@ public class HtmlHelper {
int level = element.tagName().charAt(1) - '1';
setSpan(ssb, new RelativeSizeSpan(HEADING_SIZES[level]), start, ssb.length());
setSpan(ssb, new StyleSpan(Typeface.BOLD), start, ssb.length());
newline(start);
newline(ssb.length());
break;
case "hr":
if (text_separators) {
@ -2365,6 +2297,37 @@ public class HtmlHelper {
} catch (Throwable ex) {
Log.e(ex);
}
if (rows == 0) {
if ("true".equals(element.attr("x-block")))
if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
ssb.append('\n');
if ("true".equals(element.attr("x-paragraph")))
if (ssb.length() > 2 &&
(ssb.charAt(ssb.length() - 2) != '\n' ||
ssb.charAt(ssb.length() - 1) != '\n'))
ssb.append('\n');
}
if ("true".equals(element.attr("x-col"))) {
cols--;
if (ssb.length() > 0 &&
ssb.charAt(ssb.length() - 1) != '\n' &&
ssb.charAt(ssb.length() - 1) != '\u2003')
ssb.append('\u2003'); // emsp
}
if ("true".equals(element.attr("x-row"))) {
rows--;
if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
ssb.append('\n');
}
if ("true".equals(element.attr("x-line-after")) &&
ssb.length() > 0 && ssb.charAt(ssb.length() - 1) == '\n')
ssb.append('\n');
if (debug)
ssb.append("[/" + element.tagName() + "]");
}
}
@ -2381,25 +2344,6 @@ public class HtmlHelper {
else
Log.e("Invalid span " + start + "..." + end + " len=" + len + " type=" + span.getClass().getName());
}
private void newline(int index) {
int count = 0;
if (compress) {
int i = Math.min(index, ssb.length() - 1);
while (i >= 0) {
char kar = ssb.charAt(i);
if (kar == '\n')
count++;
else if (kar != ' ' && kar != '\u00A0')
break;
i--;
}
}
if (count < 2)
ssb.insert(index, "\n");
}
}, document.body());
if (debug)