/// <summary>
/// Find out if it is a sql keyword.
/// </summary>
/// <param name="issql">The part to be check.</param>
/// <param name="rtb">The richtextbox.</param>
/// <param name="rtf">The rtf stream.</param>
/// <param name="posstart">Position where the keyword starts in the richtextbox.</param>
/// <param name="langsql">The sql language description.</param>
/// <returns>The new rtf stream.</returns>
private static string ValidatingSqlPart(string issql, RichTextBox rtb, string rtf, int posstart, HighlightLanguage langsql)
{
string sqlkeyword;
bool continufield = sqlfieldopen;
if (issql.Length > 0)
{
for (int i = 0; i < issql.Length; i++)
{
if (issql[i] == '`')
{
sqlfieldopen = !sqlfieldopen;
if (sqlfieldopen)
{
continufield = true;
}
}
if (continufield && !sqlfieldopen)
{
continufield = false;
rtf = ColorText(rtb, rtf, posstart, i + 1, Settings.HighlightSQLColorField);
}
}
if (issql[0] == '"')
{
if (issql.IndexOf('"', 1) > 0)
{
return(rtf);
}
sqlkeyword = issql.Substring(1, issql.Length - 1);
}
else
{
sqlkeyword = issql;
}
}
else
{
return(rtf);
}
// check if keyword is known SQL statement
if (!string.IsNullOrEmpty(sqlkeyword))
{
if (langsql.FindKeyword(sqlkeyword.ToLower()))
{
rtf = ColorText(rtb, rtf, posstart, issql.Length, Settings.HighlightSQLColorValidstatement);
}
}
return(rtf);
}
/// <summary>
/// Validate HTML attribute
/// </summary>
/// <param name="htmlattribute">Attribute of the HTML node to validate</param>
/// <param name="rtb">Richtextbox with note content</param>
/// <param name="rtf">The rtf stream.</param>
/// <param name="attributestartpos">Startposition of the attribute within the htmlpart.</param>
/// <param name="langhtml">The html language description.</param>
/// <returns>The new rtf stream</returns>
private static string ValidateHTMLAttribute(string htmlattribute, RichTextBox rtb, string rtf, int attributestartpos, HighlightLanguage langhtml)
{
if (htmlattribute == "/" || htmlattribute.Length < 1)
{
return(rtf);
}
char[] chrs = new char[] { '=' };
string[] attrsepnamevaleau = htmlattribute.Split(chrs, 2);
bool knowattr = false;
string attrname = attrsepnamevaleau[0];
if (attrname.Length > 0)
{
if (attrname[0] == '/')
{
attrname = attrname.Remove(0, 1);
}
}
else
{
return(rtf);
}
if (langhtml.FindKeyword(attrname.ToLower()))
{
knowattr = true;
}
if (!knowattr)
{
// Wrong
rtf = ColorText(rtb, rtf, attributestartpos, attrsepnamevaleau[0].Length, Settings.HighlightHTMLColorInvalid);
}
else
{
for (int i = 0; i < attrsepnamevaleau.Length; i++)
{
if (i == 0)
{
if (knowattr)
{
// Good
rtf = ColorText(rtb, rtf, attributestartpos, attrsepnamevaleau[0].Length, Settings.HighlightHTMLColorValid);
}
}
else if (i == 1)
{
if (attrsepnamevaleau[1].StartsWith("\"") || attrsepnamevaleau[1].StartsWith("'"))
{
// is string
htmlstringpart = true;
int posstartstring = attributestartpos + attrsepnamevaleau[0].Length + 1; // +1 for '='
rtf = ColorText(rtb, rtf, posstartstring, attrsepnamevaleau[1].Length, Settings.HighlightHTMLColorString);
currentstringquote = attrsepnamevaleau[1][0];
int lastcharpos = attrsepnamevaleau[1].Length - 1;
if (attrsepnamevaleau[1][lastcharpos] == currentstringquote)
{
htmlstringpart = false;
}
}
}
}
}
return(rtf);
}
/// <summary>
/// Find out if it is a php keyword.
/// </summary>
/// <param name="isphp">A part to be check if this a php keyword.</param>
/// <param name="rtb">The richtextbox.</param>
/// <param name="rtf">The rtf stream.</param>
/// <param name="posstart">The position in rtb where this keyword starts.</param>
/// <param name="langphp">The PHP language description.</param>
/// <returns>The new rtf stream.</returns>
private static string ValidatingPhpPart(string isphp, RichTextBox rtb, string rtf, int posstart, HighlightLanguage langphp)
{
int posvar = -1;
if (isphp.StartsWith(langphp.Commentstart))
{
comment = true;
}
if (commentline || comment)
{
rtf = ColorText(rtb, rtf, posstart, isphp.Length, Settings.HighlightPHPColorComment);
}
else
{
for (int curchr = 0; curchr < isphp.Length; curchr++)
{
if (isphp[curchr] == '$')
{
// is variable
posvar = curchr;
}
else if (isphp[curchr] == '/')
{
if (curchr > 0)
{
if (isphp[curchr - 1] == '/')
{
// is commentline
commentline = true;
rtf = ColorText(rtb, rtf, posstart + curchr - 1, isphp.Length - curchr + 1, Settings.HighlightPHPColorComment);
}
}
}
else if (isphp[curchr] == '"' || isphp[curchr] == '\'')
{
bool escaped = false;
if (curchr > 0)
{
if (isphp[curchr - 1] == '\\')
{
escaped = true;
}
}
if (!escaped)
{
phpstringpart = !phpstringpart;
if (!phpstringpart)
{
rtf = ColorText(rtb, rtf, posstart + curchr, 1, Settings.HighlightPHPColorString);
foreach (HighlightLanguage lng in langs)
{
if (lng.Name == "sql")
{
lng.PosDocumentEnd = posstart + curchr + 1;
}
}
}
else
{
foreach (HighlightLanguage lng in langs)
{
if (lng.Name == "sql")
{
lng.PosDocumentStart = posstart;
}
}
}
}
}
else if ((isphp[curchr] < 48 || isphp[curchr] > 57) && (isphp[curchr] < 65 || isphp[curchr] > 122))
{
if (isphp[curchr] != '\"' && isphp[curchr] != '\"')
{
if (posvar >= 0)
{
rtf = ColorText(rtb, rtf, posstart + posvar, curchr - posvar, Settings.HighlightPHPColorDocumentstartend); // is variable
posvar = -1;
}
}
}
else if (curchr == isphp.Length - 1)
{
if (posvar >= 0)
{
// is variable
rtf = ColorText(rtb, rtf, posstart + posvar, isphp.Length, Settings.HighlightPHPColorDocumentstartend);
}
}
if (phpstringpart)
{
rtf = ColorText(rtb, rtf, posstart + curchr, 1, Settings.HighlightPHPColorString);
}
}
// check if keyword is known php function
if (langphp.FindKeyword(isphp))
{
rtf = ColorText(rtb, rtf, posstart, isphp.Length, Settings.HighlightPHPColorValidfunctions);
}
}
if (isphp.EndsWith(langphp.Commentend))
{
comment = false;
}
return(rtf);
}
/// <summary>
/// Highlight some text part on html split by spaces.
/// </summary>
/// <param name="ishtml">String without spaces. length needs to be >0</param>
/// <param name="rtb">The richtextbox.</param>
/// <param name="rtf">The rtf stream.</param>
/// <param name="posstartpart">The start position in the richtextbox.</param>
/// <param name="langhtml">The html language description.</param>
/// <returns>The new rtf stream</returns>
private static string ValidatingHtmlPart(string ishtml, RichTextBox rtb, string rtf, int posstartpart, HighlightLanguage langhtml)
{
ishtml = ishtml.ToLowerInvariant();
List <string> attributes = new List <string>(); // these attributes are within this part.
List <int> attributesstartpos = new List <int>();
int attrstartpos = posstartpart;
int attrlen = 0;
bool attrstartposset = false;
if (ishtml.StartsWith(langhtml.Commentstart, StringComparison.Ordinal))
{
comment = true;
}
////else if (ishtml.Equals(langhtml.Commentline))
////{
//// commentline = true;
////}
if (!comment)
{
for (int c = 0; c < ishtml.Length; ++c)
{
if (htmlstringpart)
{
if (ishtml[c] == currentstringquote)
{
rtf = ColorText(rtb, rtf, posstartpart, c + 1, Settings.HighlightHTMLColorString); // +1 for '"' or '\'' itself too.
htmlstringpart = false;
}
else if (c == ishtml.Length - 1)
{
rtf = ColorText(rtb, rtf, posstartpart, c + 1, Settings.HighlightHTMLColorString); // +1 for space/enter
}
}
else
{
if (ishtml[c] == '<')
{
if (!attrstartposset)
{
attrstartpos = posstartpart + c + 1; // without <
attributesstartpos.Add(attrstartpos);
attrstartposset = true;
}
outerhtml = false;
}
else if (ishtml[c] == '>')
{
if (!outerhtml)
{
if (attrlen > 0)
{
attributes.Add(rtb.Text.Substring(attrstartpos, attrlen));
attrlen = 0;
}
attrstartposset = false;
}
outerhtml = true;
}
else
{
if (!outerhtml)
{
if (!attrstartposset)
{
attrstartpos = posstartpart + c;
attributesstartpos.Add(attrstartpos);
attrstartposset = true;
}
attrlen++;
if (c == ishtml.Length - 1)
{
attributes.Add(rtb.Text.Substring(attrstartpos, attrlen));
attrlen = 0;
}
}
}
}
}
for (int nattr = 0; nattr < attributes.Count; nattr++)
{
for (int i = 0; i < nattr; ++i)
{
attrstartpos += attributes[i].Length;
}
if (nattr < attributesstartpos.Count)
{
rtf = ValidateHTMLAttribute(attributes[nattr], rtb, rtf, attributesstartpos[nattr], langhtml);
}
}
}
else
{
// is comment
rtf = ColorText(rtb, rtf, posstartpart, ishtml.Length, Settings.HighlightHTMLColorComment);
}
if (ishtml.EndsWith(langhtml.Commentend, StringComparison.Ordinal))
{
comment = false;
}
return(rtf);
}