Common: Added RX

src/common/CMakeLists.txt

@@ -1,10 +1,10 @@
 cmake_minimum_required (VERSION 2.8)
 include_directories (${CMAKE_SOURCE_DIR}
-                     ${CMAKE_SOURCE_DIR}/src
                      ${CMAKE_SOURCE_DIR}/src/common
                      ${TIMEW_INCLUDE_DIRS})
 
 set (common_SRCS Color.cpp    Color.h
+                 RX.cpp       RX.h
                  text.cpp     text.h
                  utf8.cpp     utf8.h
                  wcwidth6.cpp)

src/common/RX.cpp

@@ -0,0 +1,165 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2006 - 2015, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <cmake.h>
+#include <RX.h>
+#include <stdlib.h>
+#include <string.h>
+
+////////////////////////////////////////////////////////////////////////////////
+RX::RX ()
+: _compiled (false)
+, _pattern ("")
+, _case_sensitive (false)
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+RX::RX (
+  const std::string& pattern,
+  bool case_sensitive /* = true */)
+: _compiled (false)
+, _pattern (pattern)
+, _case_sensitive (case_sensitive)
+{
+  compile ();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+RX::RX (const RX& other)
+{
+  _compiled = false;
+  _pattern = other._pattern;
+  _case_sensitive = other._case_sensitive;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+RX::~RX ()
+{
+  if (_compiled)
+    regfree (&_regex);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+RX& RX::operator= (const RX& other)
+{
+  if (this != &other)
+  {
+    _compiled = false;
+    _pattern = other._pattern;
+    _case_sensitive = other._case_sensitive;
+  }
+
+  return *this;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void RX::compile ()
+{
+  if (! _compiled)
+  {
+    memset (&_regex, 0, sizeof (regex_t));
+
+    int result;
+    if ((result = regcomp (&_regex, _pattern.c_str (),
+#ifdef DARWIN
+                           REG_ENHANCED | REG_EXTENDED | REG_NEWLINE |
+#else
+                           REG_EXTENDED | REG_NEWLINE |
+#endif
+                           (_case_sensitive ? 0 : REG_ICASE))) != 0)
+    {
+      char message[256];
+      regerror (result, &_regex, message, 256);
+      throw std::string (message);
+    }
+
+    _compiled = true;
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool RX::match (const std::string& in)
+{
+  if (! _compiled)
+    compile ();
+
+  return regexec (&_regex, in.c_str (), 0, NULL, 0) == 0 ? true : false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool RX::match (
+  std::vector<std::string>& matches,
+  const std::string& in)
+{
+  if (! _compiled)
+    compile ();
+
+  regmatch_t rm[2];
+  int offset = 0;
+  int length = in.length ();
+  while (regexec (&_regex, in.c_str () + offset, 2, &rm[0], 0) == 0 &&
+         offset < length)
+  {
+    matches.push_back (in.substr (rm[0].rm_so + offset, rm[0].rm_eo - rm[0].rm_so));
+    offset += rm[0].rm_eo;
+
+    // Protection against zero-width patterns causing infinite loops.
+    if (rm[0].rm_so == rm[0].rm_eo)
+      ++offset;
+  }
+
+  return matches.size () ? true : false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool RX::match (
+  std::vector <int>& start,
+  std::vector <int>& end,
+  const std::string& in)
+{
+  if (! _compiled)
+    compile ();
+
+  regmatch_t rm[2];
+  int offset = 0;
+  int length = in.length ();
+  while (regexec (&_regex, in.c_str () + offset, 2, &rm[0], 0) == 0 &&
+         offset < length)
+  {
+    start.push_back (rm[0].rm_so + offset);
+    end.push_back   (rm[0].rm_eo + offset);
+    offset += rm[0].rm_eo;
+
+    // Protection against zero-width patterns causing infinite loops.
+    if (rm[0].rm_so == rm[0].rm_eo)
+      ++offset;
+  }
+
+  return start.size () ? true : false;
+}
+
+////////////////////////////////////////////////////////////////////////////////

src/common/RX.h

@@ -0,0 +1,58 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2006 - 2015, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef INCLUDED_RX
+#define INCLUDED_RX
+
+#include <string>
+#include <vector>
+#include <regex.h>
+
+class RX
+{
+public:
+  RX ();
+  RX (const std::string&, bool caseSensitive = true);
+  RX (const RX&);
+  ~RX ();
+  RX& operator= (const RX&);
+
+  bool match (const std::string&);
+  bool match (std::vector<std::string>&, const std::string&);
+  bool match (std::vector <int>&, std::vector <int>&, const std::string&);
+
+private:
+  void compile ();
+
+private:
+  bool _compiled;
+  std::string _pattern;
+  bool _case_sensitive;
+  regex_t _regex;
+};
+
+#endif
+