Great! Superb! Maybe I'd love to see startwith and endwith string functions
in addition, but great start as Ian said :)
Is it in already?
I tried: [with nant-20031128]
<foreach item="String" in="${changes}" delim=" " property="folder">
<property name="name" value="${folder}.dll"/>
<if test="indexof('.Test.dll','${name}'==0">
...
and no luck :( :
BUILD FAILED
C:\temp\server\GINIS.NET.build(84,5):
[if] at least one if condition must be set (propertytrue,
targetexists, etc...):
Total time: 0.6 seconds.
Martin
----- Original Message -----
From: "Ian MacLean" <[EMAIL PROTECTED]>
To: "Jaroslaw Kowalski" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Friday, November 21, 2003 7:14 AM
Subject: Re: [nant-dev] PATCH: Expression evaluator for NAnt
> Jaroslaw,
> Awesome ! Checking it out now. Obviously this is another thing to go in
> post 0.84 but this looks like a great start.
> Thanks !
>
> Ian
>
> >Hi!
> >
> >As I've promised some time ago on the list, I've implemented a simple,
yet
> >very powerful, expression evaluator for NAnt. See below for a full list
of
> >features.
> >You can now write quite sophisticated expressions, like:
> >
> ><if test="tolower(${somefilename}) = ${someotherfilename} + '.txt'">
> >...
> ></if>
> >
> >I've added my parser to "NAnt.Core.ExpressionEval" namespace and I've
> >modified
> ><if> and <ifnot> tasks to support a new attribute called "test" (named
after
> >XSLT ;-)
> >
> >It's ultra-easy to add new functions. You simply add new public C#
function
> >in "NAnt/Core/ExpressionEval/ExpressionEvaluator.cs" and it works!
> >
> >The code should be considered alpha-quality, but should work in most
cases.
> >I've taken some well-tested parts from another project of mine, yet some
> >parts are new and they may not work correctly in 100% cases.
> >
> >Can someone please take a look at this patch and commit to CVS if it's
ok?
> >
> >Jarek
> >
> >P.S. No NUnit-style unit tests yet, but I'm working on them.
> >
> >Full list of features:
> >======================
> >
> >Data types:
> > integer, double, string, boolean and date
> >
> >Operators:
> > and, or, not
> > =, <>, <, >, <=, >= (because NAnt is XML I'm considering renaming
them
> >to lt, gt, le, ge)
> > unary minus,
> > +,-,*,/,%(modulo) with natural precedence, braces (), property
access:
> >${propertyname}
> >
> >Functions:
> > propertyexists(name) - returns true when the property exists, false
> >otherwise
> > propertyvalue(name) - returns the value of the named property, fails
> >when it's not present
> >
> >Conversion operators:
> > int(a) - converts a to integer (if possible) and returns the value
> > double(a) - converts a to double (if possible) and returns the value
> > string(a) - converts a to string and returns the value
> > date(a) - converts a to date
> >
> >String functions:
> >
> > length(a) - returns the length of the string
> > substring(a,b,c) - equivalent to a.Substring(b,c) in .NET
> > tolower(s) - returns s converted to lower-case
> > toupper(s) - returns s converted to upper-case
> > contains(str,subs) - returns true when subs is a substring of str
> > indexof(a,b) - equivalent to a.IndexOf(b) in .NET
> > padleft(a,b,c) - equivalent to a.PadStart(a,b,c) in .NET
> > padright(a,b,c) - equivalent to a.PadEnd(a,b,c) in .NET
> > trim(a) - equivalent to a.Trim() in .NET
> > trimstart(a) - equivalent to a.TrimStart() in .NET
> > trimend(a) - equivalent to a.TrimEnd() in .NET
> >
> >Math functions:
> >
> > round(v)
> > floor(v)
> > ceiling(v)
> > abs(v)
> >
> >File functions:
> >
> > getcreationtime(filename)
> > getlastwritetime(file)
> > getlastaccesstime(file)
> > fileexists(file)
> > filesize(file)
> >
> >Date functions:
> >
> > now()
> > datediff(d1,d2) - returns date difference in seconds
> > dateadd(d1,seconds) - returns d1 + seconds
> >
> >Here are some examples of things that are known to work, taken from my
unit
> >tests:
> >
> >Assert("1+2", 3);
> >Assert("1+2+3", 6);
> >Assert("1+2*3", 7);
> >Assert("2*1*3", 6);
> >Assert("1/2+3", 3);
> >Assert("5.0/(2+8)", 0.5);
> >Assert("double(5)/(2+8)", 0.5);
> >Assert("double(1)/2+3", 3.5);
> >Assert("((((1))))", 1);
> >Assert("((((1+2))))", 3);
> >Assert("((((1+2)+(2+1))))", 6);
> >Assert("((((1+2)/(2+1))))", 1);
> >Assert("length('')", 0);
> >Assert("length('')=0", true);
> >Assert("length('')=1", false);
> >Assert("length('test')", 4);
> >Assert("length('test')=4", true);
> >Assert("length('test')=5", false);
> >Assert("length('d''Artagnan')", 10);
> >Assert("length('d''Artagnan')=10", true);
> >Assert("length('d''Artagnan')=11", false);
> >Assert("-1", -1);
> >Assert("--1", 1);
> >Assert("'a' = 'a'", true);
> >Assert("'a' = 'b'", false);
> >Assert("'a' <> 'a'", false);
> >Assert("'a' <> 'b'", true);
> >Assert("1 = 1", true);
> >Assert("1 <> 1", false);
> >Assert("1 = 2", false);
> >Assert("1 <> 2", true);
> >Assert("1.0 = 1.0", true);
> >Assert("1.0 <> 1.0", false);
> >Assert("1.0 = 2.0", false);
> >Assert("1.0 <> 2.0", true);
> >Assert("true", true);
> >Assert("false", false);
> >Assert("true==true", true);
> >Assert("true==false", false);
> >Assert("true<>false", true);
> >Assert("true<>true", false);
> >Assert("!true", false);
> >Assert("!false", true);
> >Assert("!(1=1)", false);
> >Assert("substring('abcde',1,2)='bc'", true);
> >Assert("trim(' ab ')='ab'", true);
> >Assert("trimstart(' ab ')='ab '", true);
> >Assert("trimend(' ab ')=' ab'", true);
> >Assert("padleft('ab',5,'.')='...ab'", true);
> >Assert("padright('ab',5,'.')='ab...'", true);
> >Assert("indexof('abc','c')=2", true);
> >Assert("indexof('abc','d')=-1", true);
> >Assert("indexof('abc','d')=-1", true);
> >Assert("round(0.1)", 0.0);
> >Assert("round(0.7)", 1.0);
> >Assert("floor(0.1)", 0.0);
> >Assert("floor(0.7)", 0.0);
> >Assert("ceiling(0.1)", 1.0);
> >Assert("ceiling(0.7)", 1.0);
> >Assert("if(true,1,2)", 1);
> >Assert("if(true,'a','b')", "a");
> >Assert("if(false,'a','b')", "b");
> >Assert("abs(1)", 1.0);
> >Assert("abs(-1)", 1.0);
> >Assert("fileexists('c:\\notthere.txt')", false);
> >Assert("dateadd(${somedate},3600) = ${someotherdate}", true);
> >Assert("'a' + 'b' = 'ab'", true);
> >
> >
>
>
> --
> Ian MacLean, Developer,
> ActiveState, a division of Sophos
> http://www.ActiveState.com
>
>
>
>
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