CODEWITHSUNDEEP
c#regexstored-procedures
mr-ma
mr-ma

Reputation: 199

How to find key pattern in multiline text using regular expression

I'm using regular expression to parse stored procedures in order to modify them. here is my sample text:

DECLARE @TempTable TABLE
(
    TempID          int IDENTITY PRIMARY KEY,
    AMFID           smallint,
    AppModID        smallint,
    AppID           tinyint,
    ModID           smallint,
    FPID            smallint,
    URL         varchar(100),
    SortIndex       smallint,
    [AppName]       varchar(100),
    ModName     varchar(100),
    FPName      varchar(100),
    WUCData     varchar(7000)
)

-- Fill the temp table
INSERT INTO @TempTable
(
    AMFID,
    AppModID,
    AppID,
    ModID,
    FPID,
    URL,
    SortIndex,
    [AppName],
    ModName,
    FPName,
    WUCData
)
SELECT
    siAppModFP.AMFID,
    siAppModFP.AppModID,
    siAppModule.AppID,
    siAppModule.ModID,
    siAppModFP.FPID,
    siAppModFP.URL,
    siAppModFP.SortIndex,
    siApplication.[AppName],
    siModule.ModName,
    siFP.FPName,
    dbo.funcGetAppModFPWUC(siAppModFP.AMFID)
FROM siApplication WITH (NOLOCK)

...

I just want to get this part:

DECLARE @TempTable TABLE
(
    TempID          int IDENTITY PRIMARY KEY,
    AMFID           smallint,
    AppModID        smallint,
    AppID           tinyint,
    ModID           smallint,
    FPID            smallint,
    URL         varchar(100),
    SortIndex       smallint,
    [AppName]       varchar(100),
    ModName     varchar(100),
    FPName      varchar(100),
    WUCData     varchar(7000)
)

Notice it might be repeated more than once. I want all declarations of temp tables in the text. I used following regular pattern:

string re1 = "(Declare)( )(@)((?:[a-z][a-z0-9_]*))(\\s+)(Table)(\\s+)(\\(.*\\))";
Regex r = new Regex(re1, RegexOptions.Multiline | RegexOptions.IgnoreCase);

But it's not working. Any ideas?

Upvotes: 4

Views: 337

Answers (3)

Anirudha
Anirudha

Reputation: 32817

You have to use singleline mode not multiline mode

Use this regex with singleline mode

declare\s*@(?:[a-z]\w*)\s*table.*?\)\s*\)

So,it should be

string re1 = @"declare\s*@(?:[a-z]\w*)\s*table.*?\)\s*\)";
Regex r = new Regex(re1 ,RegexOptions.Singleline | RegexOptions.IgnoreCase );

try it here

Upvotes: 1

Ria
Ria

Reputation: 10347

Try this Regex:

DECLARE\s+@(\w+)\s+TABLE\s+\(([^,\(\)]+(\(\d+\))?(,)?)+\)

and a sample code:

var pattern = @"DECLARE\s+@(\w+)\s+TABLE\s+\(([^,\(\)]+(\(\d+\))?(,)?)+\)";
var matches = Regex.Matches(inputText, pattern);

foreach(Match match in matches)
    Output.Lines.Add(match.ToString());

// or in LINQ way
var result = from Match match in matches select match.ToString();

Upvotes: 1

Rohit
Rohit

Reputation: 3638

You need to get balancing brackets

Regex rx = new Regex(@"declare\s\@([a-zA-Z_][a-zA-Z0-9_]*)\w+table\w*\(((?<BR>\()|(?<-BR>\))|[^()]*)+\)");

Upvotes: 0

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