*
****************************************************************************/
-// For compilers that support precompilation
-#include "wx/wxprec.h"
-#include "wx/html/forcelnk.h"
-
// Include private headers
#include "wx/applet/prepifelse.h"
#include "wx/applet/ifelsevar.h"
+#include "wx/applet/echovar.h"
+#include "wx/string.h"
-/*---------------------------- Global variables ---------------------------*/
-
+// Force link macro
+#include "wx/html/forcelnk.h"
+// wxWindows
+#include "wx/msgdlg.h"
/*----------------------------- Implementation ----------------------------*/
return p;
p--;
}
-
return -1;
}
+/* {SECRET} */
+/****************************************************************************
+REMARKS:
+tells if a character is a letter.
+replace this when wxWindows gets regex library. (without strange licensing
+restrictions)
+****************************************************************************/
+bool IsLetter(
+ char c, bool acceptspace = false)
+{
+ if (acceptspace && (c == ' ')) return true;
+ if (c >= '0' && c <= '9') return true;
+ return ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || c == '\"' || c == '\'' );
+}
+
+#define IsQuote(c) (c == '\'' || c == '\"')
+
+/* {SECRET} */
+/****************************************************************************
+REMARKS:
+tells if a character is a letter.
+replace this when wxWindows gets regex library. (without strange licensing
+restrictions)
+****************************************************************************/
+wxString GetEquals(
+ wxString var,
+ wxString value)
+{
+ if (!wxEchoVariable::Exists(var)) {
+ // TODO: when we implement the set variable, check for a set variable as well
+ #ifdef CHECKED
+ wxMessageBox(wxString("wxHTML #if\\else error: Variable ") + var + wxString(" not found."),"Error",wxICON_ERROR);
+ #endif
+ return wxString("0"); // false
+ }
+
+ wxString tmp = wxEchoVariable::GetValue(var);
+
+ if (IsQuote( value.GetChar(0) ))
+ value = value.Mid(1);
+ if (IsQuote(value.GetChar(value.Length()-1)))
+ value = value.Mid(0,value.Length()-1);
+
+ if (tmp.CmpNoCase(value) == 0) return wxString("1");
+ return wxString("0");
+}
+
/****************************************************************************
PARAMETERS:
str - text of #if statement
true or false depending on how it evaluated
REMARKS:
+TODO: rewrite this whole thing using regular expressions when they are done.
SEE ALSO:
wxIfElseVariable
****************************************************************************/
-bool ParseIfStatementValue(wxString &str) {
-
+bool ParseIfStatementValue(
+ wxString &str)
+{
// Find out if the tag has parenthesis
// recursive to parse the text within the parenthesis,
// replacing the text with 1 or 0, (hardcoded true or false)
int nextbeg, nextend;
int parencount = 1, min = b+1;
do {
-
nextbeg = str.find('(', min);
nextend = str.find(')', min);
if (nextbeg < nextend && nextbeg != wxString::npos) {
}
if (nextend == wxString::npos) {
- #ifdef CHECKED
+#ifdef CHECKED
wxMessageBox("wxHTML #if\\else error: Unmatched parenthesis in #if expression.","Error",wxICON_ERROR);
- #endif
+#endif
return true;
}
// once parencount reaches 0 again we have found our matchin )
// Add extra spaces just in case of NOT(VAL)
if (val) str = str.Mid(0, b) + " 1" + str.Mid(e+1);
else str = str.Mid(0, b) + " 0" + str.Mid(e+1);
-
}
// Remove spaces from left and right
// this makes only one special case necessary for each later on
str.Replace(" AND ", "&&");
str.Replace(" OR ", "||");
+ str.Replace(" EQUALS ", "==");
+
+ // Check for equals statements
+ // == statements are special because they are evaluated as a single block
+ int equ;
+ equ = str.find("==");
+ while (equ != wxString::npos) {
+ int begin, end;
+ int begin2, end2; // ends of words
+ begin = equ-1;
+ end = equ+2;
+
+ // remove spaces, find extents
+ while (end < str.Length() && str.GetChar(end) == ' ')
+ end++;
+ while (begin >= 0 && str.GetChar(begin) == ' ')
+ begin--;
+ end2 = end;
+ begin2 = begin;
+ if (str.GetChar(end2) == '\'' || str.GetChar(end2) == '\"') {
+ end2++;
+ while (end2 < str.Length() && str.GetChar(end2) != '\'' && str.GetChar(end2) != '\"' )
+ end2++;
+ end2++;
+ }
+ else {
+ while (end2 < str.Length() && IsLetter(str.GetChar(end2)))
+ end2++;
+ }
+ while (begin >= 0 && IsLetter(str.GetChar(begin)))
+ begin--;
+
+ if (begin < 0) begin = 0;
+ else begin++;
+ if (end2 >= str.Length()) end2 = str.Length();
+
+ wxString tmpeq = GetEquals(str.Mid(begin, begin2-begin+1), str.Mid(end, end2-end));
+ str = str.Mid(0, begin) + wxString(" ") + tmpeq + wxString(" ") +
+ str.Mid(end2);
+ equ = str.find("==");
+
+ // Remove spaces from left and right
+ str.Trim(false);
+ str.Trim(true);
+ }
// We use ReverseFind so that the whole left expression gets evaluated agains
// the right single item, creating a left -> right evaluation
if ( (and != -1) || (or != -1) ) {
wxString tag1, tag2;
// handle the rightmost first to force left->right evaluation
- if (and > or) {
+ if ( (and > or) ) {
return (
ParseIfStatementValue(tag2 = str.Mid(and+2)) &&
ParseIfStatementValue(tag1 = str.Mid(0, and)) );
ParseIfStatementValue(tag2 = str.Mid(or+2)) ||
ParseIfStatementValue(tag1 = str.Mid(0, or)) );
}
-
}
// By the time we get to this place in the function we are guarenteed to have a single
}
// now all we have left is the name of the class or a hardcoded 0 or 1
-
if (str == "") {
- #ifdef CHECKED
+#ifdef CHECKED
wxMessageBox("wxHTML #if\\else error: Empty expression in #if\\#elif statement.","Error",wxICON_ERROR);
- #endif
+#endif
return true;
}
if (str == "1") return !notval;
// Grab the value from the variable class identified by cname
- bool value = wxIfElseVariable::FindValue(str);
+ bool value = wxIfElseVariable::GetValue(str);
if (notval) value = !value;
return value;
char ftelse[] = "<!--#else-->";
char ftnot[] = "<!--#if not ";
char ftnot2[] = "<!--#if !";
-
char ftelif[] = "<!--#elif ";
// make a copy so we can replace text as we go without affecting the original
e = output.find("-->", b + strlen(ftelif));
if (e == wxString::npos) {
- #ifdef CHECKED
+#ifdef CHECKED
wxMessageBox("wxHTML #elif error: Premature end of file while parsing #elif.","Error",wxICON_ERROR);
- #endif
+#endif
break;
}
}
if (nextendif == wxString::npos) {
- #ifdef CHECKED
+#ifdef CHECKED
wxMessageBox("wxHTML #elif error: Premature end of file before finding #endif.","Error",wxICON_ERROR);
- #endif
+#endif
break;
}
// once ifcount reaches 0 again we have found our matchin #endif
// If it couldn't be found die gracefully
if (nextendif == wxString::npos) {
- // We already displayed a message, just break all the way out
- break;
- }
+ // We already displayed a message, just break all the way out
+ break;
+ }
int elifsize = e - (b + strlen(ftelif)) + strlen("-->");
// Create the #if/else block, removing the #elif code
output.Mid(b+strlen(ftelif), elifsize+nextendif) +
wxString(ftend) +
output.Mid(b+strlen(ftelif)+elifsize+nextendif);
-
}
// Parse out the if else blocks themselves
return output;
}
-FORCE_LINK(ifelsevar)
+FORCE_LINK(ifelsevar)
+
projects / wxWidgets.git / blobdiff