src/file.h

/*****************************************************************************
* This file is provided under the Creative Commons Attribution 3.0 license.
*
* You are free to share, copy, distribute, transmit, or adapt this work
* PROVIDED THAT you attribute the work to the authors listed below.
* For more information, please see the following web page:
* http://creativecommons.org/licenses/by/3.0/
*
* This file is a component of the Sleipnir library for functional genomics,
* authored by:
* Curtis Huttenhower (chuttenh@princeton.edu)
* Mark Schroeder
* Maria D. Chikina
* Olga G. Troyanskaya (ogt@princeton.edu, primary contact)
*
* If you use this library, the included executable tools, or any related
* code in your work, please cite the following publication:
* Curtis Huttenhower, Mark Schroeder, Maria D. Chikina, and
* Olga G. Troyanskaya.
* "The Sleipnir library for computational functional genomics"
*****************************************************************************/
#ifndef FILE_H
#define FILE_H

#ifdef _MSC_VER
#define FOR_EACH_DIRECTORY_FILE(strDir, strFile)                                            \
    HANDLE          hSearch;                                                                \
    WIN32_FIND_DATA sEntry;                                                                 \
    bool            fOk;                                                                    \
    for( fOk = ( ( hSearch = FindFirstFile( ( (strDir) + "/*" ).c_str( ), &sEntry ) )       \
        != INVALID_HANDLE_VALUE ); fOk; fOk = !!FindNextFile( hSearch, &sEntry ) ) {        \
        if( sEntry.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )                            \
            continue;                                                                       \
        (strFile) = sEntry.cFileName;
#else // _MSC_VER
#include <dirent.h>
#include <sys/stat.h>

#define FOR_EACH_DIRECTORY_FILE(strDir, strFile)                                            \
    DIR*            pDir;                                                                   \
    struct dirent*  psEntry;                                                                \
    struct stat     sStat;                                                                  \
    pDir = opendir( (strDir).c_str( ) );                                                    \
    while( pDir && ( psEntry = readdir( pDir ) ) ) {                                        \
        stat( ( (strDir) + '/' + psEntry->d_name ).c_str( ), &sStat );                      \
        if( S_ISDIR( sStat.st_mode ) )                                                      \
            continue;                                                                       \
        (strFile) = psEntry->d_name;
#endif // _MSC_VER

#include <iostream>
#include <string>

#include "filei.h"

namespace Sleipnir {

class CFile : protected CFileImpl {
public:
    static std::string OpenToken( std::istream& istm );

    static size_t GetBufferSize( ) {

        return c_iBufferSize; }

    static bool IsNewline( char c ) {

        return ( ( c == '\n' ) || ( c == '\r' ) ); }

    static std::string OpenToken( const char* szInput, const char** ppcEnd = NULL ) {
        const char* pcStart;
        const char* pcEnd;
        char        c;

        do
            c = *(szInput++);
        while( c && ( c != -1 ) && ( c != '\t' ) && isspace( c ) );
        pcStart = szInput - 1;
        for( ; c && ( c != -1 ) && ( c != '\t' ) && !IsNewline( c ); c = *(szInput++) );
        pcEnd = szInput;
        if( ppcEnd )
            *ppcEnd = pcEnd - ( ( !c || IsNewline( c ) ) ? 1 : 0 );

        return std::string( pcStart, pcEnd - pcStart - 1 ); }
};

}

#endif // FILE_H