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utils/tfstats/regexp/include/jm/re_str.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+/*
+ *
+ * Copyright (c) 1998-9
+ * Dr John Maddock
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Dr John Maddock makes no representations
+ * about the suitability of this software for any purpose.  
+ * It is provided "as is" without express or implied warranty.
+ *
+ */
+ 
+ /*
+  *   FILE     re_str.h
+  *   VERSION  2.12
+  *   This is an internal header file, do not include directly.
+  *   String support and helper functions, for regular
+  *   expression library.
+  */
+
+#ifndef RE_STR_H
+#define RE_STR_H
+
+#ifndef JM_CFG_H
+#include <jm/jm_cfg.h>
+#endif
+
+#include <string.h>
+
+JM_NAMESPACE(__JM)
+
+//
+// start by defining some template function aliases for C API functions:
+//
+
+template <class charT>
+size_t RE_CALL re_strlen(const charT *s)
+{
+   size_t len = 0;
+   while(*s)
+   {
+      ++s;
+      ++len;
+   }
+   return len;
+}
+
+template <class charT>
+int RE_CALL re_strcmp(const charT *s1, const charT *s2)
+{
+   while(*s1 && *s2)
+   {
+      if(*s1 != *s2)
+         return *s1 - *s2;
+      ++s1;
+      ++s2;
+   }
+   return *s1 - *s2;
+}
+
+template <class charT>
+charT* RE_CALL re_strcpy(charT *s1, const charT *s2)
+{
+   charT* base = s1;
+   while(*s2)
+   {
+      *s1 = *s2;
+      ++s1;
+      ++s2;
+   }
+   *s1 = *s2;
+   return base;
+}
+
+template <class charT>
+unsigned int RE_CALL re_strwiden(charT *s1, unsigned int len, const char *s2)
+{
+   unsigned int result = 1 + re_strlen(s2);
+   if(result > len)
+      return result;
+   while(*s2)
+   {
+      *s1 = (unsigned char)*s2;
+      ++s2;
+      ++s1;
+   }
+   *s1 = (unsigned char)*s2;
+   return result;
+}
+
+template <class charT>
+unsigned int RE_CALL re_strnarrow(char *s1, unsigned int len, const charT *s2)
+{
+   unsigned int result = 1 + re_strlen(s2);
+   if(result > len)
+      return result;
+   while(*s2)
+   {
+      *s1 = (char)(unsigned char)*s2;
+      ++s2;
+      ++s1;
+   }
+   *s1 = (char)(unsigned char)*s2;
+   return result;
+}
+
+inline size_t RE_CALL re_strlen(const char *s)
+{
+   return strlen(s);
+}
+
+inline int RE_CALL re_strcmp(const char *s1, const char *s2)
+{
+   return strcmp(s1, s2);
+}
+
+inline char* RE_CALL re_strcpy(char *s1, const char *s2)
+{
+   return strcpy(s1, s2);
+}
+
+#ifndef JM_NO_WCSTRING
+
+inline size_t RE_CALL re_strlen(const wchar_t *s)
+{
+   return wcslen(s);
+}
+
+inline int RE_CALL re_strcmp(const wchar_t *s1, const wchar_t *s2)
+{
+   return wcscmp(s1, s2);
+}
+
+inline wchar_t* RE_CALL re_strcpy(wchar_t *s1, const wchar_t *s2)
+{
+   return wcscpy(s1, s2);
+}
+
+#endif
+
+#if !defined(JM_NO_WCSTRING) || defined(JM_PLATFORM_W32)
+
+JM_IX_DECL unsigned int RE_CALL _re_strnarrow(char *s1, unsigned int len, const wchar_t *s2);
+JM_IX_DECL unsigned int RE_CALL _re_strwiden(wchar_t *s1, unsigned int len, const char *s2);
+
+
+inline unsigned int RE_CALL re_strnarrow(char *s1, unsigned int len, const wchar_t *s2)
+{
+   return _re_strnarrow(s1, len, s2);
+}
+
+inline unsigned int RE_CALL re_strwiden(wchar_t *s1, unsigned int len, const char *s2)
+{
+   return _re_strwiden(s1, len, s2);
+}
+
+#endif
+
+template <class charT>
+charT* RE_CALL re_strdup(const charT* p)
+{
+   charT* buf = new charT[re_strlen(p) + 1];
+   re_strcpy(buf, p);
+   return buf;
+}
+
+template <class charT>
+charT* RE_CALL re_strdup(const charT* p1, const charT* p2)
+{
+   unsigned int len = p2 - p1 + 1;
+   charT* buf = new charT[len];
+   memcpy(buf, p1, (len - 1) * sizeof(charT));
+   *(buf + len - 1) = 0;
+   return buf;
+}
+
+template <class charT>
+inline void RE_CALL re_strfree(charT* p)
+{
+   delete[] p;
+}
+
+template <class charT>
+class re_str
+{
+   charT* buf;
+public:
+   re_str() 
+   { 
+      charT c = 0;
+      buf = re_strdup(&c); 
+   }
+   ~re_str();
+   re_str(const re_str& other);
+   re_str(const charT* p1);
+   re_str(const charT* p1, const charT* p2);
+   re_str(charT c);
+
+   re_str& RE_CALL operator=(const re_str& other)
+   {
+      re_strfree(buf);
+      buf = re_strdup(other.buf);
+      return *this;
+   }
+   re_str& RE_CALL operator=(const charT* p)
+   {
+      re_strfree(buf);
+      buf = re_strdup(p);
+      return *this;
+   }
+   re_str& RE_CALL operator=(charT c)
+   {
+      re_strfree(buf);
+      buf = re_strdup(&c, &c+1);
+      return *this;
+   }
+   const charT* RE_CALL c_str()const { return buf; }
+   RE_CALL operator const charT*()const { return buf; }
+   unsigned int RE_CALL size()const { return re_strlen(buf); }
+   charT& RE_CALL operator[](unsigned int i) { return buf[i]; }
+   charT RE_CALL operator[](unsigned int i)const { return buf[i]; }
+
+   bool RE_CALL operator==(const re_str& other)const { return re_strcmp(buf, other.buf) == 0; }
+   bool RE_CALL operator==(const charT* p)const { return re_strcmp(buf, p) == 0; }
+   bool RE_CALL operator==(const charT c)const
+   {
+      if((*buf) && (*buf == c) && (*(buf+1) == 0))
+         return true;
+      return false;
+   }
+   bool RE_CALL operator!=(const re_str& other)const { return re_strcmp(buf, other.buf) != 0; }
+   bool RE_CALL operator!=(const charT* p)const { return re_strcmp(buf, p) != 0; }
+   bool RE_CALL operator!=(const charT c)const { return !(*this == c); }
+
+   bool RE_CALL operator<(const re_str& other)const { return re_strcmp(buf, other.buf) < 0; }
+   bool RE_CALL operator<=(const re_str& other)const { return re_strcmp(buf, other.buf) <= 0; }
+   bool RE_CALL operator>(const re_str& other)const { return re_strcmp(buf, other.buf) > 0; }
+   bool RE_CALL operator>=(const re_str& other)const { return re_strcmp(buf, other.buf) >= 0; }
+
+   bool RE_CALL operator<(const charT* p)const { return re_strcmp(buf, p) < 0; }
+   bool RE_CALL operator<=(const charT* p)const { return re_strcmp(buf, p) <= 0; }
+   bool RE_CALL operator>(const charT* p)const { return re_strcmp(buf, p) > 0; }
+   bool RE_CALL operator>=(const charT* p)const { return re_strcmp(buf, p) >= 0; }
+};
+
+template <class charT>
+CONSTRUCTOR_INLINE re_str<charT>::~re_str() { re_strfree(buf); }
+
+template <class charT>
+CONSTRUCTOR_INLINE re_str<charT>::re_str(const re_str<charT>& other) { buf = re_strdup(other.buf); }
+
+template <class charT>
+CONSTRUCTOR_INLINE re_str<charT>::re_str(const charT* p1) { buf = re_strdup(p1); }
+
+template <class charT>
+CONSTRUCTOR_INLINE re_str<charT>::re_str(const charT* p1, const charT* p2) { buf = re_strdup(p1, p2); }
+
+template <class charT>
+CONSTRUCTOR_INLINE re_str<charT>::re_str(charT c) { buf = re_strdup(&c, &c+1); }
+
+
+#ifndef JM_NO_WCSTRING
+JM_IX_DECL void RE_CALL re_transform(re_str<wchar_t>& out, const re_str<wchar_t>& in);
+#endif
+JM_IX_DECL void RE_CALL re_transform(re_str<char>& out, const re_str<char>& in);
+
+template <class charT>
+void RE_CALL re_trunc_primary(re_str<charT>& s)
+{
+   for(unsigned int i = 0; i < s.size(); ++i)
+   {
+      if(s[i] <= 1)
+      {
+         s[i] = 0;
+         break;
+      }
+   }
+}
+
+#ifdef RE_LOCALE_C
+#define TRANSFORM_ERROR (size_t)-1
+#else
+#define TRANSFORM_ERROR 0
+#endif
+
+
+JM_END_NAMESPACE
+
+#endif
+
+