1 files changed, 127 insertions, 0 deletions
diff --git a/CyteKit/RegEx.hpp b/CyteKit/RegEx.hpp
new file mode 100644
index 0000000..5799946
--- /dev/null
+++ b/CyteKit/RegEx.hpp
@@ -0,0 +1,127 @@
+/* Cydia - iPhone UIKit Front-End for Debian APT
+ * Copyright (C) 2008-2014  Jay Freeman (saurik)
+*/
+
+/* GNU General Public License, Version 3 {{{ */
+/*
+ * Cydia is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * Cydia is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Cydia.  If not, see <http://www.gnu.org/licenses/>.
+**/
+/* }}} */
+
+#ifndef Cydia_RegEx_HPP
+#define Cydia_RegEx_HPP
+
+#include <unicode/uregex.h>
+
+#include "CyteKit/UCPlatform.h"
+#include "CyteKit/stringWithUTF8Bytes.h"
+
+#define _rgxcall(code, args...) ({ \
+    UErrorCode status(U_ZERO_ERROR); \
+    auto _value(code(args, &status)); \
+    if (U_FAILURE(status)) { \
+        fprintf(stderr, "%d:%s\n", error.offset, u_errorName(status)); \
+        _assert(false); \
+    } \
+_value; })
+
+#define _rgxcallv(code, args...) ({ \
+    UErrorCode status(U_ZERO_ERROR); \
+    code(args, &status); \
+    if (U_FAILURE(status)) { \
+        fprintf(stderr, "%d:%s\n", error.offset, u_errorName(status)); \
+        _assert(false); \
+    } \
+})
+
+class RegEx {
+  private:
+    URegularExpression *regex_;
+    int capture_;
+    size_t size_;
+
+  public:
+    RegEx() :
+        regex_(NULL),
+        size_(_not(size_t))
+    {
+    }
+
+    RegEx(const char *regex, NSString *data = nil) :
+        regex_(NULL),
+        size_(_not(size_t))
+    {
+        this->operator =(regex);
+
+        if (data != nil)
+            this->operator ()(data);
+    }
+
+    void operator =(const char *regex) {
+        _assert(regex_ == NULL);
+        UParseError error;
+        regex_ = _rgxcall(uregex_openC, regex, 0, &error);
+        capture_ = _rgxcall(uregex_groupCount, regex_);
+    }
+
+    ~RegEx() {
+        uregex_close(regex_);
+    }
+
+    NSString *operator [](size_t match) const {
+        UParseError error;
+        size_t size(size_);
+        UChar data[size];
+        size = _rgxcall(uregex_group, regex_, match, data, size);
+        return [[[NSString alloc] initWithBytes:data length:(size * sizeof(UChar)) encoding:NSUTF16LittleEndianStringEncoding] autorelease];
+    }
+
+    _finline bool operator ()(NSString *string) {
+        return operator ()(reinterpret_cast<const uint16_t *>([string cStringUsingEncoding:NSUTF16LittleEndianStringEncoding]), [string length]);
+    }
+
+    _finline bool operator ()(const char *data) {
+        return operator ()([NSString stringWithUTF8String:data]);
+    }
+
+    bool operator ()(const UChar *data, size_t size) {
+        UParseError error;
+        _rgxcallv(uregex_setText, regex_, data, size);
+
+        if (_rgxcall(uregex_matches, regex_, -1)) {
+            size_ = size;
+            return true;
+        } else {
+            size_ = _not(size_t);
+            return false;
+        }
+    }
+
+    bool operator ()(const char *data, size_t size) {
+        return operator ()([[[NSString alloc] initWithBytes:data length:size encoding:NSUTF8StringEncoding] autorelease]);
+    }
+
+    operator bool() const {
+        return size_ != _not(size_t);
+    }
+
+    NSString *operator ->*(NSString *format) const {
+        id values[capture_];
+        for (int i(0); i != capture_; ++i)
+            values[i] = this->operator [](i + 1);
+        return [[[NSString alloc] initWithFormat:format arguments:reinterpret_cast<va_list>(values)] autorelease];
+    }
+};
+
+#endif//Cydia_RegEx_HPP