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Project Line Counter Add-In v2.10 for VS.NET and VC6

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29 Jun 2003 449.5K   5.3K   142  
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/***************************************************************************/
/* NOTE:                                                                   */
/* This document is copyright (c) by Oz Solomonovich, and is bound by the  */
/* MIT open source license (www.opensource.org/licenses/mit-license.html). */
/* See License.txt for more information.                                   */
/***************************************************************************/

#include "stdafx.h"
#include "CPP_Parser.h"
#include "config.h"

bool CCParser::CanParseFile(const char *pszFileName)
{
    return true;
}

void CCParser::ParseFile(CFileInfo& info)
{
    ifstream ifs(info.m_sFullFileName);

    char buf[10240];
    bool bInComment = false, bHasCode, bHasComments;
    while (!ifs.eof()  &&  ifs.good())
    {
        ifs.getline(buf, countof(buf));

        ParseLine(buf, bInComment, bHasCode, bHasComments);

        if (bHasComments)
        {
            ++info.m_iLinesWithComments;
        }
        if (bHasCode)
        {
            ++info.m_iLinesWithCode;
        }
        if (!bHasCode  &&  !bHasComments)
        {
            if (cfg_bProcessBlanks)
            {
                ++info.m_iBlankLines;
            }
            else
            {
                ++info.m_iLinesWithCode;
            }
        }
        ++info.m_iTotalLines;
    }

    info.m_bFull = true;
}

#define IS_PAIR(A, B) (ch == #@A  &&  chNext == #@B)

void CCParser::ParseLine(
    CString sLine,
    /* in out */ bool& bMultiLineComment,
    /* out */ bool& bHasCode,
    /* out */ bool& bHasComments)
{
    // state flags
    bool bInString = false;
    bool bInTwoPairSequence = false;

    bHasComments = bMultiLineComment;
    bHasCode = false;

    const int len = sLine.GetLength();
    for (int i = 0; i < len; ++i)
    {
        char ch = sLine[i];
        char chNext = i < (len - 1)? sLine[i + 1] : 0;

        // a // type comment - ignore rest of line
        if (IS_PAIR(/, /)  &&  !bMultiLineComment  &&  !bInString  &&
            cfg_bProcessCPPComments)
        {
            bHasComments = true;
            return;
        }

        // start of /* comment
        else if (IS_PAIR(/, *)  &&  !bInString  &&  cfg_bProcessCPPComments)
        {
            bMultiLineComment = true;
            bHasComments = true;
            ++i;
        }

        // end of /* comment (
        else if (IS_PAIR(*, /)  &&  !bInString  &&  cfg_bProcessCPPComments)
        {
            bMultiLineComment = false;
            ++i;
        }

        else if (ch == '\\'  &&  !bMultiLineComment)
        {
            // escape character - so skip next char
            ++i;
            bHasCode = true;
        }

        else if (ch == '"'  &&  !bMultiLineComment)
        {
            bInString = !bInString;
            bHasCode = true;
        }

        else if (!bMultiLineComment)
        {
            if (!isspace(ch))
            {
                bHasCode = true;
            }
        }
    }
}

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Written By
Experion
Canada Canada
You may know Oz from his WndTabs days. Oz has long since left client side development to work on web technologies and to consult in the R&D management field.

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