// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "regex.h"
#endif
#include "wx/intl.h"
#endif //WX_PRECOMP
-// FreeBSD requires this, it probably doesn't hurt for others
-#ifdef __UNIX__
- #include <sys/types.h>
+// FreeBSD, Watcom and DMars require this, CW doesn't have nor need it.
+// Others also don't seem to need it. If you have an error related to
+// (not) including <sys/types.h> please report details to
+// wx-dev@lists.wxwindows.org
+#if defined(__UNIX__) || defined(__WATCOMC__) || defined(__DIGITALMARS__)
+# include <sys/types.h>
#endif
#include <regex.h>
-
#include "wx/regex.h"
// ----------------------------------------------------------------------------
wxRegExImpl();
~wxRegExImpl();
- // return TRUE if Compile() had been called successfully
+ // return true if Compile() had been called successfully
bool IsValid() const { return m_isCompiled; }
// RE operations
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()
+ {
+ m_isCompiled = false;
+ m_Matches = NULL;
+ m_nMatches = 0;
+ }
// free the RE if compiled
void Free()
if ( IsValid() )
{
regfree(&m_RegEx);
-
- m_isCompiled = FALSE;
}
+
+ delete [] m_Matches;
}
+ // free the RE if any and reinit the members
+ void Reinit()
+ {
+ Free();
+ Init();
+ }
+
+
// compiled RE
regex_t m_RegEx;
regmatch_t *m_Matches;
size_t m_nMatches;
- // TRUE if m_RegEx is valid
+ // true if m_RegEx is valid
bool m_isCompiled;
};
wxRegExImpl::wxRegExImpl()
{
- m_isCompiled = FALSE;
- m_Matches = NULL;
+ Init();
}
wxRegExImpl::~wxRegExImpl()
{
Free();
-
- delete [] m_Matches;
}
-wxString wxRegExImpl::GetErrorMsg(int errorcode) const
+wxString wxRegExImpl::GetErrorMsg(int errorcode, bool badconv) const
{
- wxString msg;
+#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
int len = regerror(errorcode, &m_RegEx, NULL, 0);
if ( len > 0 )
{
- len++;
+ char* szcmbError = new char[++len];
- (void)regerror(errorcode, &m_RegEx, msg.GetWriteBuf(len), len);
+ (void)regerror(errorcode, &m_RegEx, szcmbError, len);
- msg.UngetWriteBuf();
+ szError = wxConvertMB2WX(szcmbError);
+ delete [] szcmbError;
}
else // regerror() returned 0
{
- msg = _("unknown error");
+ szError = _("unknown error");
}
- return msg;
+ return szError;
}
bool wxRegExImpl::Compile(const wxString& expr, int flags)
{
- Free();
-
- // translate our flags to regcomp() ones
- wxASSERT_MSG( !(flags &
- ~(wxRE_BASIC | wxRE_ICASE | wxRE_NOSUB | wxRE_NEWLINE)),
+ Reinit();
+
+#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 )
flagsRE |= REG_NEWLINE;
// compile it
- int errorcode = regcomp(&m_RegEx, expr, flagsRE);
+#ifdef __REG_NOFRONT
+ bool conv = true;
+ int errorcode = wx_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
+
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;
+ m_isCompiled = false;
}
else // ok
{
}
else
{
- // will alloc later
- m_nMatches = WX_REGEX_MAXMATCHES;
+ // we will alloc the array later (only if really needed) but count
+ // the number of sub-expressions in the regex right now
+
+ // there is always one for the whole expression
+ m_nMatches = 1;
+
+ // and some more for bracketed subexperessions
+ for ( const wxChar *cptr = expr.c_str(); *cptr; cptr++ )
+ {
+ if ( *cptr == _T('\\') )
+ {
+ // in basic RE syntax groups are inside \(...\)
+ if ( *++cptr == _T('(') && (flags & wxRE_BASIC) )
+ {
+ m_nMatches++;
+ }
+ }
+ else if ( *cptr == _T('(') && !(flags & wxRE_BASIC) )
+ {
+ // we know that the previous character is not an unquoted
+ // backslash because it would have been eaten above, so we
+ // 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++;
+ }
+ }
}
- m_isCompiled = TRUE;
+ m_isCompiled = true;
}
return IsValid();
bool wxRegExImpl::Matches(const wxChar *str, int flags) const
{
- wxCHECK_MSG( IsValid(), FALSE, _T("must successfully Compile() first") );
+ wxCHECK_MSG( IsValid(), false, _T("must successfully Compile() first") );
// translate our flags to regexec() ones
wxASSERT_MSG( !(flags & ~(wxRE_NOTBOL | wxRE_NOTEOL)),
}
// do match it
- int rc = regexec(&self->m_RegEx, str, m_nMatches, m_Matches, flagsRE);
+#ifdef __REG_NOFRONT
+ bool conv = true;
+ int rc = wx_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 )
{
case 0:
// matched successfully
- return TRUE;
+ return true;
default:
- // an error occured
+ // an error occurred
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:
// no match
- return FALSE;
+ return false;
}
}
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( index < m_nMatches, FALSE, _T("invalid match index") );
+ wxCHECK_MSG( IsValid(), false, _T("must successfully Compile() first") );
+ 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];
- if ( match.rm_so == -1 )
- return FALSE;
if ( start )
*start = match.rm_so;
if ( len )
*len = match.rm_eo - match.rm_so;
- return TRUE;
+ 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
{
- wxCHECK_MSG( text, -1, _T("NULL text in wxRegEx::Replace") );
- wxCHECK_MSG( IsValid(), -1, _T("must successfully Compile() first") );
+ wxCHECK_MSG( text, wxNOT_FOUND, _T("NULL text in wxRegEx::Replace") );
+ wxCHECK_MSG( IsValid(), wxNOT_FOUND, _T("must successfully Compile() first") );
// the replacement text
wxString textNew;
// the replacement text anew after each match
if ( mayHaveBackrefs )
{
- mayHaveBackrefs = FALSE;
+ mayHaveBackrefs = false;
textNew.clear();
textNew.reserve(replacement.length());
size_t start, len;
if ( !GetMatch(&start, &len, index) )
{
- // we can't do it because GetMatch() returns FALSE
- // even for a valid back reference index if it didn't
- // match for this expression (e.g. it when alternative
- // branches were used and the one contained the back
- // ref didn't match)
- //
- // it would be better to distinguish between this case
- // and really invalid index, but I don't know how to
- // do it
-
- //wxFAIL_MSG( _T("invalid back reference") );
+ wxFAIL_MSG( _T("invalid back reference") );
// just eat it...
}
textNew += wxString(text->c_str() + matchStart + start,
len);
- mayHaveBackrefs = TRUE;
+ mayHaveBackrefs = true;
}
}
else // ordinary character
// we did have match as Matches() returned true above!
wxFAIL_MSG( _T("internal logic error in wxRegEx::Replace") );
- return -1;
+ return wxNOT_FOUND;
}
matchStart += start;
delete m_impl;
m_impl = NULL;
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
bool wxRegEx::Matches(const wxChar *str, int flags) const
{
- wxCHECK_MSG( IsValid(), FALSE, _T("must successfully Compile() first") );
+ wxCHECK_MSG( IsValid(), false, _T("must successfully Compile() first") );
return m_impl->Matches(str, flags);
}
bool wxRegEx::GetMatch(size_t *start, size_t *len, size_t index) const
{
- wxCHECK_MSG( IsValid(), FALSE, _T("must successfully Compile() first") );
+ wxCHECK_MSG( IsValid(), false, _T("must successfully Compile() first") );
return m_impl->GetMatch(start, len, index);
}
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
{
- wxCHECK_MSG( IsValid(), -1, _T("must successfully Compile() first") );
+ wxCHECK_MSG( IsValid(), wxNOT_FOUND, _T("must successfully Compile() first") );
return m_impl->Replace(pattern, replacement, maxMatches);
}
projects / wxWidgets.git / blobdiff