From ccaf4c0110067442ff8b141a73604ab2c5d5e715 Mon Sep 17 00:00:00 2001
From: Markus Mittendrein <git@maxmitti.tk>
Date: Tue, 16 Feb 2016 15:36:54 +0100
Subject: Add missing Util

---
 Util.cpp | 191 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 Util.hpp |  18 ++++++
 2 files changed, 209 insertions(+)
 create mode 100644 Util.cpp
 create mode 100644 Util.hpp

diff --git a/Util.cpp b/Util.cpp
new file mode 100644
index 0000000..41500da
--- /dev/null
+++ b/Util.cpp
@@ -0,0 +1,191 @@
+#include "Util.hpp"
+
+#include <QRegularExpression>
+
+namespace Util {
+    QString trimQuotes(QString string, bool& trimmed)
+    {
+        if(string.isEmpty()) return string;
+
+        trimmed = false;
+        if(string.length() >= 2 && string.at(0) == '"' && string.at(string.length() - 1) == '"')
+        {
+            string.remove(0, 1);
+            string.remove(string.length() - 1, 1);
+            trimmed = true;
+        }
+        return string;
+    }
+
+    QString unescape(const QString &string, const QChar escapeChar)
+    {
+        if(string.isEmpty()) return string;
+        QString ret;
+        bool escaped = false;
+        QChar c = string.at(0);
+        for(int i = 0; i < string.length(); ++i)
+        {
+            c = string.at(i);
+            if(!escaped)
+            {
+                if(c == escapeChar)
+                {
+                    escaped = true;
+                    continue;
+                }
+                else
+                {
+                    ret.append(c);
+                }
+            }
+            else
+            {
+                if(unescapeChars.contains(c))
+                {
+                    ret.append(unescapeChars.value(c));
+                }
+                else
+                {
+                    ret.append(c);
+                }
+                escaped = false;
+            }
+        }
+        if(escaped)
+        {
+            ret.append(escapeChar);
+        }
+        return ret;
+    }
+
+    QString escape(const QString &string, const QChar escapeChar, const QString &escapeChars)
+    {
+        QString ret;
+
+        for(int i = 0; i < string.length(); ++i)
+        {
+            QChar c = string.at(i);
+
+            if(c == escapeChar)
+            {
+                ret.append(escapeChar);
+                ret.append(escapeChar);
+            }
+            else if(escapeChars.contains(c))
+            {
+                ret.append(escapeChar);
+                ret.append(c);
+            }
+            else if(unescapeChars.values().contains(c))
+            {
+                ret.append(unescapeChars.key(c));
+            }
+            else
+            {
+                ret.append(c);
+            }
+        }
+
+        return ret;
+    }
+
+    QString joinEscape(const QStringList &list, const QChar joinChar, const QChar escapeChar)
+    {
+        QString ret;
+        bool first = true;
+        foreach(const QString& part, list)
+        {
+            if(!first)
+            {
+                ret.append(joinChar);
+            }
+            else
+            {
+                first = false;
+            }
+            ret.append(escape(part, escapeChar, joinChar));
+        }
+        return ret;
+    }
+
+    QStringList splitEscaped(const QString &joined, const QChar splitChar, const QChar escapeChar)
+    {
+        QStringList ret;
+
+        int partPos = 0;
+        bool escaped = false;
+        for(int i = 0; i < joined.length(); ++i)
+        {
+            QChar c = joined.at(i);
+            if(!escaped)
+            {
+                if(c == escapeChar)
+                {
+                    escaped = true;
+                }
+                else if(c == splitChar)
+                {
+                    ret.append(Util::unescape(joined.mid(partPos, i - partPos), escapeChar));
+                    partPos = i + 1;
+                }
+            }
+            else
+            {
+                escaped = false;
+            }
+        }
+        ret.append(Util::unescape(joined.mid(partPos), escapeChar));
+
+        return ret;
+    }
+
+    QString& unescapeClonkString(QString&& string)
+    {
+        static QRegularExpression escapeExp(R"(\\[0-7]+)");
+        QRegularExpressionMatch match;
+        while((match = escapeExp.match(string)).hasMatch())
+        {
+            unsigned char c = (unsigned char)match.capturedRef(0).mid(1).toInt(0, 8);
+
+            string.replace(match.capturedStart(), match.capturedLength(), c);
+        }
+        return string;
+    }
+
+    int indexOfEscaped(const QString& string, const QChar subject, int startPos, const QChar escapeChar)
+    {
+        if(string.isEmpty())
+        {
+            return -1;
+        }
+        if(startPos < 0)
+        {
+            startPos += string.length();
+        }
+        bool escaped = false;
+        for(int pos = startPos; pos < string.length(); ++pos)
+        {
+            QChar c = string.at(pos);
+            if(!escaped)
+            {
+                if(c == escapeChar)
+                {
+                    escaped = true;
+                    continue;
+                }
+                else
+                {
+                    if(c == subject)
+                    {
+                        return pos;
+                    }
+                }
+            }
+            else
+            {
+                escaped = false;
+            }
+        }
+        return -1;
+    }
+}
diff --git a/Util.hpp b/Util.hpp
new file mode 100644
index 0000000..f90e108
--- /dev/null
+++ b/Util.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <QString>
+#include <QMap>
+
+namespace Util {
+    static const QMap<QChar, QChar> unescapeChars {
+        {'n', '\n'},
+    };
+
+    QString trimQuotes(QString string, bool& trimmed);
+    QString unescape(const QString& string, const QChar escapeChar = '\\');
+    QString escape(const QString& string, const QChar escapeChar = '\\', const QString& escapeChars = "");
+    QString joinEscape(const QStringList& list, const QChar joinChar, const QChar escapeChar = '\\');
+    QStringList splitEscaped(const QString& joined, const QChar splitChar, const QChar escapeChar = '\\');
+    QString& unescapeClonkString(QString&& string);
+    int indexOfEscaped(const QString& string, const QChar subject, int startPos = 0, const QChar escapeChar = '\\');
+}
-- 
cgit v1.2.3-54-g00ecf