fileos2.c

C++的一个好库。。。现在很流行

/*
 * Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
 *
 * This file is part of Jam - see jam.c for Copyright information.
 */

/*  This file is ALSO:
 *  Copyright 2001-2004 David Abrahams.
 *  Distributed under the Boost Software License, Version 1.0.
 *  (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
 */

# include "jam.h"
# include "filesys.h"
# include "pathsys.h"

/* note that we use "fileunix.c" when compiling with EMX on OS/2 */
# if defined(OS_OS2) && !defined(__EMX__)

# include <io.h>
# include <dos.h>

/*
 * fileos2.c - scan directories and archives on NT
 *
 * External routines:
 *
 *	file_dirscan() - scan a directory for files
 *	file_time() - get timestamp of file, if not done by file_dirscan()
 *	file_archscan() - scan an archive for files
 *
 * File_dirscan() and file_archscan() call back a caller provided function
 * for each file found.  A flag to this callback function lets file_dirscan()
 * and file_archscan() indicate that a timestamp is being provided with the
 * file.   If file_dirscan() or file_archscan() do not provide the file's
 * timestamp, interested parties may later call file_time().
 *
 * 07/10/95 (taylor)  Findfirst() returns the first file on NT.
 * 05/03/96 (seiwald) split apart into pathnt.c
 * 09/22/00 (seiwald) handle \ and c:\ specially: don't add extra /
 */

/*
 * file_dirscan() - scan a directory for files
 */

void
file_dirscan( 
	char *dir,
	scanback func,
	void	*closure )
{
    PATHNAME f;
    string filespec[1];
    long handle;
    int ret;
    struct _find_t finfo[1];

    /* First enter directory itself */

    memset( (char *)&f, '\0', sizeof( f ) );

    f.f_dir.ptr = dir;
    f.f_dir.len = strlen(dir);

    dir = *dir ? dir : ".";

    /* Special case \ or d:\ : enter it */
    string_copy( filespec, dir );

    if( f.f_dir.len == 1 && f.f_dir.ptr[0] == '\\' )
 	    (*func)( closure, dir, 0 /* not stat()'ed */, (time_t)0 );
    else if( f.f_dir.len == 3 && f.f_dir.ptr[1] == ':' )
 	    (*func)( closure, dir, 0 /* not stat()'ed */, (time_t)0 );
    else
        string_push_back( filespec, '/' );

    string_push_back( filespec, '*' );

    /* Now enter contents of directory */

    if( DEBUG_BINDSCAN )
        printf( "scan directory %s\n", filespec->value );

    /* Time info in dos find_t is not very useful.  It consists */
    /* of a separate date and time, and putting them together is */
    /* not easy.  So we leave that to a later stat() call. */

    if( !_dos_findfirst( filespec->value, _A_NORMAL|_A_RDONLY|_A_SUBDIR, finfo ) )
    {
        string filename[1];
        string_new( filename );
        do
        {
            
            f.f_base.ptr = finfo->name;
            f.f_base.len = strlen( finfo->name );

            string_truncate( filename, 0 );
            path_build( &f, filename, 0 );
            (*func)( closure, filename->value, 0 /* not stat()'ed */, (time_t)0 );
        }
        while( !_dos_findnext( finfo ) );
        string_free( filename );
    }
}

/*
 * file_time() - get timestamp of file, if not done by file_dirscan()
 */

int
file_time(
	char	*filename,
	time_t	*time )
{
	/* This is called on OS2, not NT.  */
	/* NT fills in the time in the dirscan. */

	struct stat statbuf;

	if( stat( filename, &statbuf ) < 0 )
	    return -1;

	*time = statbuf.st_mtime;

	return 0;
}

void
file_archscan(
	char *archive,
	scanback func,
	void	*closure )
{
}

# endif /* OS2 && !__EMX__ */