fixes for harmless mingw32 warnings

[wxWidgets.git] / src / common / regex.cpp

diff --git a/src/common/regex.cpp b/src/common/regex.cpp
index 12d49ee971737968bbf92a7d8ed56246e6297ee8..1837bfff302598e40fc69984b7a1e10657d94e43 100644 (file)
--- a/src/common/regex.cpp
+++ b/src/common/regex.cpp
@@ -68,12 +68,13 @@ public:
     bool Compile(const wxString& expr, int flags = 0);
     bool Matches(const wxChar *str, int flags = 0) const;
     bool GetMatch(size_t *start, size_t *len, size_t index = 0) const;
+    size_t GetMatchCount() const;
     int Replace(wxString *pattern, const wxString& replacement,
                 size_t maxMatches = 0) const;
 
 private:
     // return the string containing the error message for the given err code
-    wxString GetErrorMsg(int errorcode) const;
+    wxString GetErrorMsg(int errorcode, bool badconv) const;
 
     // init the members
     void Init()
@@ -131,8 +132,19 @@ wxRegExImpl::~wxRegExImpl()
     Free();
 }
 
-wxString wxRegExImpl::GetErrorMsg(int errorcode) const
+wxString wxRegExImpl::GetErrorMsg(int errorcode, bool badconv) const
 {
+#if wxUSE_UNICODE && !defined(__REG_NOFRONT)
+    // currently only needed when using system library in Unicode mode
+    if ( badconv )
+    {
+        return _("conversion to 8-bit encoding failed");
+    }
+#else
+    // 'use' badconv to avoid a compiler warning
+    (void)badconv;
+#endif
+
     wxString szError;
 
     // first get the string length needed
@@ -158,14 +170,25 @@ bool wxRegExImpl::Compile(const wxString& expr, int flags)
 {
     Reinit();
 
-    // translate our flags to regcomp() ones
-    wxASSERT_MSG( !(flags &
-                        ~(wxRE_BASIC | wxRE_ICASE | wxRE_NOSUB | wxRE_NEWLINE)),
+#ifdef WX_NO_REGEX_ADVANCED
+#   define FLAVORS wxRE_BASIC
+#else
+#   define FLAVORS (wxRE_ADVANCED | wxRE_BASIC)
+    wxASSERT_MSG( (flags & FLAVORS) != FLAVORS,
+                  _T("incompatible flags in wxRegEx::Compile") );
+#endif
+    wxASSERT_MSG( !(flags & ~(FLAVORS | wxRE_ICASE | wxRE_NOSUB | wxRE_NEWLINE)),
                   _T("unrecognized flags in wxRegEx::Compile") );
 
+    // translate our flags to regcomp() ones
     int flagsRE = 0;
     if ( !(flags & wxRE_BASIC) )
-        flagsRE |= REG_EXTENDED;
+#ifndef WX_NO_REGEX_ADVANCED
+        if (flags & wxRE_ADVANCED)
+            flagsRE |= REG_ADVANCED;
+        else
+#endif
+            flagsRE |= REG_EXTENDED;
     if ( flags & wxRE_ICASE )
         flagsRE |= REG_ICASE;
     if ( flags & wxRE_NOSUB )
@@ -173,14 +196,19 @@ bool wxRegExImpl::Compile(const wxString& expr, int flags)
     if ( flags & wxRE_NEWLINE )
         flagsRE |= REG_NEWLINE;
 
+    // compile it
+#ifdef __REG_NOFRONT
+    bool conv = true;
+    int errorcode = re_comp(&m_RegEx, expr, expr.length(), flagsRE);
+#else
+    const wxWX2MBbuf conv = expr.mbc_str();
+    int errorcode = conv ? regcomp(&m_RegEx, conv, flagsRE) : REG_BADPAT;
+#endif
 
-
-    int errorcode = regcomp(&m_RegEx, expr, flagsRE);
-
-     if ( errorcode )
+    if ( errorcode )
     {
         wxLogError(_("Invalid regular expression '%s': %s"),
-                   expr.c_str(), GetErrorMsg(errorcode).c_str());
+                   expr.c_str(), GetErrorMsg(errorcode, !conv).c_str());
 
         m_isCompiled = FALSE;
     }
@@ -215,9 +243,12 @@ bool wxRegExImpl::Compile(const wxString& expr, int flags)
                 {
                     // we know that the previous character is not an unquoted
                     // backslash because it would have been eaten above, so we
-                    // have a bar '(' and this indicates a group start for the
-                    // extended syntax
-                    m_nMatches++;
+                    // have a bare '(' and this indicates a group start for the
+                    // extended syntax. '(?' is used for extensions by perl-
+                    // like REs (e.g. advanced), and is not valid for POSIX
+                    // extended, so ignore them always.
+                    if ( cptr[1] != _T('?') )
+                        m_nMatches++;
                 }
             }
         }
@@ -250,7 +281,13 @@ bool wxRegExImpl::Matches(const wxChar *str, int flags) const
     }
 
     // do match it
-    int rc = regexec(&self->m_RegEx, str, m_nMatches, m_Matches, flagsRE);
+#ifdef __REG_NOFRONT
+    bool conv = true;
+    int rc = re_exec(&self->m_RegEx, str, wxStrlen(str), NULL, m_nMatches, m_Matches, flagsRE);
+#else
+    const wxWX2MBbuf conv = wxConvertWX2MB(str);
+    int rc = conv ? regexec(&self->m_RegEx, conv, m_nMatches, m_Matches, flagsRE) : REG_BADPAT;
+#endif
 
     switch ( rc )
     {
@@ -261,7 +298,7 @@ bool wxRegExImpl::Matches(const wxChar *str, int flags) const
         default:
             // an error occured
             wxLogError(_("Failed to match '%s' in regular expression: %s"),
-                       str, GetErrorMsg(rc).c_str());
+                       str, GetErrorMsg(rc, !conv).c_str());
             // fall through
 
         case REG_NOMATCH:
@@ -273,7 +310,8 @@ bool wxRegExImpl::Matches(const wxChar *str, int flags) const
 bool wxRegExImpl::GetMatch(size_t *start, size_t *len, size_t index) const
 {
     wxCHECK_MSG( IsValid(), FALSE, _T("must successfully Compile() first") );
-    wxCHECK_MSG( m_Matches, FALSE, _T("can't use with wxRE_NOSUB") );
+    wxCHECK_MSG( m_nMatches, FALSE, _T("can't use with wxRE_NOSUB") );
+    wxCHECK_MSG( m_Matches, FALSE, _T("must call Matches() first") );
     wxCHECK_MSG( index < m_nMatches, FALSE, _T("invalid match index") );
 
     const regmatch_t& match = m_Matches[index];
@@ -286,6 +324,14 @@ bool wxRegExImpl::GetMatch(size_t *start, size_t *len, size_t index) const
     return TRUE;
 }
 
+size_t wxRegExImpl::GetMatchCount() const
+{
+    wxCHECK_MSG( IsValid(), 0, _T("must successfully Compile() first") );
+    wxCHECK_MSG( m_nMatches, 0, _T("can't use with wxRE_NOSUB") );
+
+    return m_nMatches;
+}
+
 int wxRegExImpl::Replace(wxString *text,
                          const wxString& replacement,
                          size_t maxMatches) const
@@ -454,6 +500,13 @@ wxString wxRegEx::GetMatch(const wxString& text, size_t index) const
     return text.Mid(start, len);
 }
 
+size_t wxRegEx::GetMatchCount() const
+{
+    wxCHECK_MSG( IsValid(), 0, _T("must successfully Compile() first") );
+
+    return m_impl->GetMatchCount();
+}
+
 int wxRegEx::Replace(wxString *pattern,
                      const wxString& replacement,
                      size_t maxMatches) const