SilverSearcher: Support regexp substitution

Change-Id: I42cde61fdd052882ae84ae27466a9e79a1782398
Reviewed-by: Przemyslaw Gorszkowski <pgorszkowski@gmail.com>

src/plugins/silversearcher/findinfilessilversearcher.cpp

@@ -119,7 +119,15 @@ void runSilverSeacher(FutureInterfaceType &fi, FileFindParameters parameters)
     process.start("ag", arguments);
     if (process.waitForFinished()) {
         typedef QList<FileSearchResult> FileSearchResultList;
-        SilverSearcher::SilverSearcherOutputParser parser(process.readAll());
+        QRegularExpression regexp;
+        if (parameters.flags & FindRegularExpression) {
+            const QRegularExpression::PatternOptions patternOptions =
+                    (parameters.flags & FindCaseSensitively)
+                    ? QRegularExpression::NoPatternOption : QRegularExpression::CaseInsensitiveOption;
+            regexp.setPattern(parameters.text);
+            regexp.setPatternOptions(patternOptions);
+        }
+        SilverSearcher::SilverSearcherOutputParser parser(process.readAll(), regexp);
         FileSearchResultList items = parser.parse();
         if (!items.isEmpty())
             fi.reportResult(items);

src/plugins/silversearcher/silversearcheroutputparser.cpp

@@ -30,10 +30,12 @@
 namespace SilverSearcher {
 
 SilverSearcherOutputParser::SilverSearcherOutputParser(
-        const QByteArray &output)
+        const QByteArray &output, const QRegularExpression &regexp)
     : output(output)
+    , regexp(regexp)
     , outputSize(output.size())
 {
+    hasRegexp = !regexp.pattern().isEmpty();
 }
 
 QList<Utils::FileSearchResult> SilverSearcherOutputParser::parse()
@@ -102,6 +104,13 @@ bool SilverSearcherOutputParser::parseMatchLength()
 int SilverSearcherOutputParser::parseMatches()
 {
     int matches = 1;
+    const int colon = output.indexOf(':', index);
+    QByteArray text;
+    if (colon != -1) {
+        const int textStart = colon + 1;
+        const int newline = output.indexOf('\n', textStart);
+        text = output.mid(textStart, newline >= 0 ? newline - textStart : -1);
+    }
     while (index < outputSize && output[index] != ':') {
         if (output[index] == ',') {
             ++matches;
@@ -109,6 +118,10 @@ int SilverSearcherOutputParser::parseMatches()
         }
         parseMatchIndex();
         parseMatchLength();
+        if (hasRegexp) {
+            const QString part = QString::fromUtf8(text.mid(item.matchStart, item.matchLength));
+            item.regexpCapturedTexts = regexp.match(part).capturedTexts();
+        }
         items << item;
     }
 

src/plugins/silversearcher/silversearcheroutputparser.h

@@ -28,15 +28,18 @@
 #include <coreplugin/find/searchresultwindow.h>
 #include <utils/filesearch.h>
 
-#include <QList>
 #include <QByteArray>
+#include <QList>
+#include <QRegularExpression>
 
 namespace SilverSearcher {
 
 class SilverSearcherOutputParser
 {
 public:
-    SilverSearcherOutputParser(const QByteArray &output);
+    SilverSearcherOutputParser(
+            const QByteArray &output,
+            const QRegularExpression &regexp = QRegularExpression());
 
     QList<Utils::FileSearchResult> parse();
 private:
@@ -48,6 +51,8 @@ private:
     bool parseText();
 
     QByteArray output;
+    QRegularExpression regexp;
+    bool hasRegexp = false;
     int outputSize = 0;
     int index = 0;
     Utils::FileSearchResult item;