const Wikidiff2::String & Wikidiff2::execute(const String & text1, const String & text2, int numContextLines, int maxMovedLines)
{
// Allocate some result space to avoid excessive copying
result.clear();
result.reserve(text1.size() + text2.size() + 10000);
// Split input strings into lines
StringVector lines1;
StringVector lines2;
explodeLines(text1, lines1);
explodeLines(text2, lines2);
// Do the diff
diffLines(lines1, lines2, numContextLines, maxMovedLines);
// Return a reference to the result buffer
return result;
}
std::string removeBlankLines(std::string s) {
Vector<std::string> lines = explodeLines(s);
Vector<std::string> newLines;
for (std::string line : lines) {
line = trimR(line);
if (line.length() > 0) {
newLines.add(line);
}
}
return implode(newLines, "\n");
}
std::string indent(std::string s, int spaces) {
Vector<std::string> lines = explodeLines(s);
Vector<std::string> newLines;
std::string indentStr = "";
for (int i = 0; i < spaces; i++) {
indentStr += " ";
}
for (std::string line : lines) {
newLines.add(indentStr + line);
}
return implode(newLines);
}
std::string trimToWidth(std::string s, int width, std::string suffix) {
Vector<std::string> lines = explodeLines(s);
for (int i = 0; i < lines.size(); i++) {
if ((int) lines[i].length() > width) {
lines[i] = lines[i].substr(0, width);
if (!suffix.empty()) {
lines[i] += suffix;
}
}
}
return implode(lines);
}
std::string trimToHeight(std::string s, int height, std::string suffix) {
Vector<std::string> lines = explodeLines(s);
int lineCount = lines.size();
bool wasTooTall = lineCount > height;
while (lines.size() > height) {
lines.remove(lines.size() - 1);
}
if (wasTooTall && !suffix.empty()) {
lines.add(suffix + " (" + integerToString(lineCount - height) + " line(s) truncated)");
}
return implode(lines);
}