more stream-like insertion operators

[wxWidgets.git] / include / wx / string.h

diff --git a/include/wx/string.h b/include/wx/string.h
index 7cd776c85fa0f4b7f1374564fc19cbffdc484c20..f9155fbf60e9114c06c8a3bbb3bddff225be913f 100644 (file)
--- a/include/wx/string.h
+++ b/include/wx/string.h
@@ -38,7 +38,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __WXMAC__
+#if defined(__WXMAC__) || defined(__VISAGECPP__)
     #include <ctype.h>
 #endif
 
@@ -46,11 +46,20 @@
     #include <std.h>
 #endif
 
-#include <string.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <limits.h>
-#include <stdlib.h>
+#if defined(__VISAGECPP__) && __IBMCPP__ >= 400
+   // problem in VACPP V4 with including stdlib.h multiple times
+   // strconv includes it anyway
+#  include <stdio.h>
+#  include <string.h>
+#  include <stdarg.h>
+#  include <limits.h>
+#else
+#  include <string.h>
+#  include <stdio.h>
+#  include <stdarg.h>
+#  include <limits.h>
+#  include <stdlib.h>
+#endif
 
 #ifdef HAVE_STRINGS_H
     #include <strings.h>    // for strcasecmp()
@@ -156,6 +165,15 @@ inline int WXDLLEXPORT Stricmp(const char *psz1, const char *psz2)
 #endif  // OS/compiler
 }
 
+// wxSnprintf() is like snprintf() if it's available and sprintf() (always
+// available, but dangerous!) if not
+extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
+                                  const wxChar *format, ...);
+
+// and wxVsnprintf() is like vsnprintf() or vsprintf()
+extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
+                                   const wxChar *format, va_list argptr);
+
 // return an empty wxString
 class WXDLLEXPORT wxString; // not yet defined
 inline const wxString& wxGetEmptyString() { return *(wxString *)&wxEmptyString; }
@@ -262,7 +280,9 @@ private:
   //
   // try `s << i' or `s.Printf("%d", i)' instead
   wxString(int);
+  wxString(unsigned int);
   wxString(long);
+  wxString(unsigned long);
 
 public:
   // constructors and destructor
@@ -382,7 +402,7 @@ public:
     wxChar  operator[](unsigned int n) const
       { ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
 #endif
-    
+
     // operator version of GetWriteableChar
     wxChar& operator[](size_t n)
       { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
@@ -512,11 +532,23 @@ public:
 
   // stream-like functions
       // insert an int into string
-  wxString& operator<<(int i);
+  wxString& operator<<(int i)
+    { return (*this) << Format(_T("%d"), i); }
+      // insert an unsigned int into string
+  wxString& operator<<(unsigned int ui)
+    { return (*this) << Format(_T("%u"), ui); }
+      // insert a long into string
+  wxString& operator<<(long l)
+    { return (*this) << Format(_T("%ld"), l); }
+      // insert an unsigned long into string
+  wxString& operator<<(unsigned long ul)
+    { return (*this) << Format(_T("%lu"), ul); }
       // insert a float into string
-  wxString& operator<<(float f);
+  wxString& operator<<(float f)
+    { return (*this) << Format(_T("%f"), f); }
       // insert a double into string
-  wxString& operator<<(double d);
+  wxString& operator<<(double d)
+    { return (*this) << Format(_T("%g"), d); }
 
   // string comparison
     // case-sensitive comparison (returns a value < 0, = 0 or > 0)
@@ -597,12 +629,26 @@ public:
     // check if the string contents matches a mask containing '*' and '?'
   bool Matches(const wxChar *szMask) const;
 
+    // conversion to numbers: all functions return TRUE only if the whole string
+    // is a number and put the value of this number into the pointer provided
+        // convert to a signed integer
+    bool ToLong(long *val) const;
+        // convert to an unsigned integer
+    bool ToULong(unsigned long *val) const;
+        // convert to a double
+    bool ToDouble(double *val) const;
+
   // formated input/output
     // as sprintf(), returns the number of characters written or < 0 on error
   int Printf(const wxChar *pszFormat, ...);
     // as vprintf(), returns the number of characters written or < 0 on error
   int PrintfV(const wxChar* pszFormat, va_list argptr);
 
+    // returns the string containing the result of Printf() to it
+  static wxString Format(const wxChar *pszFormat, ...);
+    // the same as above, but takes a va_list
+  static wxString FormatV(const wxChar *pszFormat, va_list argptr);
+
   // raw access to string memory
     // ensure that string has space for at least nLen characters
     // only works if the data of this string is not shared
@@ -696,6 +742,8 @@ public:
   void clear() { Empty(); }
     // returns true if the string is empty
   bool empty() const { return IsEmpty(); }
+    // inform string about planned change in size
+  void reserve(size_t size) { Alloc(size); }
 
   // lib.string.access
     // return the character at position n
@@ -848,7 +896,8 @@ public:
               const wxChar* sz, size_t nCount = npos) const;
 
   // substring extraction
-  wxString substr(size_t nStart = 0, size_t nLen = npos) const;
+  wxString substr(size_t nStart = 0, size_t nLen = npos) const
+    { return Mid(nStart, nLen); }
 #endif // wxSTD_STRING_COMPATIBILITY
 };