home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
wxos2233.zip
/
wxOS2-2_3_3.zip
/
wxWindows-2.3.3
/
contrib
/
src
/
applet
/
prepecho.cpp
< prev
next >
Wrap
C/C++ Source or Header
|
2002-02-08
|
4KB
|
129 lines
/****************************************************************************
*
* wxWindows HTML Applet Package
*
* Copyright (C) 1991-2001 SciTech Software, Inc.
* All rights reserved.
*
* ========================================================================
*
* The contents of this file are subject to the wxWindows License
* Version 3.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.wxwindows.org/licence3.txt
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* ========================================================================
*
* Language: ANSI C++
* Environment: Any
*
* Description: This file is the implementation of the Preprocessor object
* for parsing the <!--#echo directive
*
****************************************************************************/
// Include private headers
#include "wx/applet/prepecho.h"
#include "wx/applet/echovar.h"
// Force Link macro
#include "wx/html/forcelnk.h"
// wxWindows headers
#include "wx/msgdlg.h"
/*----------------------------- Implementation ----------------------------*/
/****************************************************************************
PARAMETERS:
text - HTML to process for echo directives
RETURNS:
The string containing the processed HTML
REMARKS:
This function replaces #echo directives with a variable retrieved from the
class given in the HTML directive. These classes are created by making a sub
class of wxEchoVariable. Dynamic class construction is used at run time
internally to create an instance of this class and access the value of the
variable.
SEE ALSO:
wxEchoVariable
****************************************************************************/
wxString wxEchoPrep::Process(
const wxString& text) const
{
int i;
char ft[] = "<!--#echo ";
// make a copy so we can replace text as we go without affecting the original
wxString output = text;
while ((i = (output.Lower()).Find(ft)) != -1) {
// Loop until every #echo directive is found
int n, c, end;
wxString cname, parms;
wxString tag;
// grab the tag and remove it from the file
end = (output.Mid(i)).Find("-->");
if (end == -1) {
#ifdef CHECKED
wxMessageBox("wxHTML #echo error: Premature end of file while parsing #echo.","Error",wxICON_ERROR);
#endif
break;
}
end += 3;
tag = output.Mid(i, end);
output.Remove(i, end);
n = (tag.Lower()).Find(" parm=");
c = tag.Find("-->");
if (n == -1) {
n = c;
// find the classname
c = (tag.Mid(10, n-10)).Find(" ");
if (c == -1) n -= 10;
else n = c;
cname = tag.Mid(10, n);
// grab the value from the class, put it in tag since the data is no longer needed
tag = wxEchoVariable::GetValue(cname, NULL);
}
else {
// Find the parms
parms = tag.Mid(n+6, c-n-6);
// Clip off any quotation marks if they exist. (don't die if there arn't any)
c = parms.Find("\"");
if (c != -1) parms = parms.Mid(c+1);
c = parms.Find("\"");
if (c != -1) parms = parms.Mid(0, c);
// find the classname
c = (tag.Mid(10, n-10)).Find(" ");
if (c == -1) n -= 10;
else n = c;
cname = tag.Mid(10, n);
// grab the value from the class, put it in tag since the data is no longer needed
tag = wxEchoVariable::GetValue(cname, parms.c_str());
}
// remove ampersands and <> chars
tag.Replace("&", "&");
tag.Replace("<", "<");
tag.Replace(">", ">");
output = (output.Mid(0,i) + tag + output.Mid(i));
}
return output;
}
FORCE_LINK(echovar)