Regular expression does not fit to pattern

Question

I want to go through a list of header files, and save the files which those include. My problem is that the pattern does not match.

In this link you can find the pattern which I thought will work: https://regex101.com/r/jbJLxT/3

string rgxPat = "\\#include\\s+\"(?:\\w+\\/)*(\\w +\\.(?:hed|he|hdb|h))\"";
Regex incLRgx = new Regex(rgxPat, RegexOptions.IgnoreCase);
for (int i = alrdyChckd; i < missFiles.Count; i++)
{
    tmpStr = baseSBFolder + "\\" + missFiles[i].getPath() + "\\" + missFiles[i].getName();
    System.IO.StreamReader actFile = new System.IO.StreamReader(tmpStr);
    while((actLine = actFile.ReadLine()) != null)
    {
        Match match = incLRgx.Match(actLine);
        if(match.Success)
        {
    missFiles.Add(baseSB.getFileByName(match.Groups[1].Value.ToString()));
        }
    }
    alrdyChckd++;
}

I checked the debug varaibles and the match function always give back false return value, while the pattern and the actual line seems to be the same. Also it's a problem that I cannot add double qoutes as I wanted with the string = @"[pettern]" form because the double queste will close the pattern.

Look into using/IDisposable for your StreamReader and also Path.Combine() instead of all that string concatenation with hard-coded `\`. — Jesse C. Slicer
– Jesse C. Slicer, Commented Jul 30, 2019 at 14:55
The only issue is a typo: you inserted a space between \w and +. Replace \\/ with / in the C# code. match.Groups[1].Value.ToString() = match.Groups[1].Value — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Jul 30, 2019 at 15:30

MonkeyZeus · Accepted Answer · 2019-07-30 14:50:29Z

2

This will give you the paths:

/^\#include\s+"(.+)"$/gm

Output of $1:

FSW/CustSW/CustSW_generic/RSC/Src/gen/rsc_cpif.h
EbsPartition/EbsCluster/EbsCluster_generic/EbsCore/Src/ebscore_basetypes.h
FSW/CustSW/CustSW_generic/RSC/Src/gen/rsc_types.h

If you want just the filenames then use:

/^\#include\s+".*\/([^\/]+)"$/gm

and $1 will give you:

rsc_cpif.h
ebscore_basetypes.h
rsc_types.h

edited Jul 30, 2019 at 14:50

answered Jul 30, 2019 at 14:45

MonkeyZeus

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Comments

vendettamit · Accepted Answer · 2019-07-30 14:45:46Z

0

You can capture the group by name to get the file path:

\#include(?<path>\s+"(?:\w+\/)*(\w+\.(?:hed|he|hdb|h))")

match.Groups["path"].Value.ToString()

This will give you the file path captured as "FSW/CustSW/CustSW_generic/RSC/Src/gen/rsc_cpif.h"

answered Jul 30, 2019 at 14:45

vendettamit

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