/*
 * (C) Copyright 2002
 * Stäubli Faverges - <www.staubli.com>
 * Pierre AUBERT  p.aubert@staubli.com
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <config.h>
#include <malloc.h>

#include "dos.h"
#include "fdos.h"


const char *month [] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

Fs_t    fs;
File_t  file;

/*-----------------------------------------------------------------------------
 * dos_open --
 *-----------------------------------------------------------------------------
 */
int dos_open(char *name)
{
    int lg;
    int entry;
    char *fname;

    /* We need to suppress the " char around the name                        */
    if (name [0] == '"') {
	name ++;
    }
    lg = strlen (name);
    if (name [lg - 1] == '"') {
	name [lg - 1] = '\0';
    }

    /* Open file system                                                      */
    if (fs_init (&fs) < 0) {
	return -1;
    }

    /* Init the file descriptor                                              */
    file.name = name;
    file.fs = &fs;

    /* find the subdirectory containing the file                             */
    if (open_subdir (&file) < 0) {
	return (-1);
    }

    fname = basename (name);

    /* if we try to open root directory                                      */
    if (*fname == '\0') {
	file.file = file.subdir;
	return (0);
    }

    /* find the file in the subdir                                           */
    entry = 0;
    if (vfat_lookup (&file.subdir,
		     file.fs,
		     &file.file.dir,
		     &entry,
		     0,
		     fname,
		     ACCEPT_DIR | ACCEPT_PLAIN | SINGLE | DO_OPEN,
		     0,
		     &file.file) != 0) {
	/* File not found                                                    */
	printf ("File not found\n");
	return (-1);
    }

    return 0;
}

/*-----------------------------------------------------------------------------
 * dos_read --
 *-----------------------------------------------------------------------------
 */
int dos_read (ulong addr)
{
    int read = 0, nb;

    /* Try to boot a directory ?                                             */
    if (file.file.dir.attr & (ATTR_DIRECTORY | ATTR_VOLUME)) {
	printf ("Unable to boot %s !!\n", file.name);
	return (-1);
    }
    while (read < file.file.FileSize) {
	PRINTF ("read_file (%ld)\n", (file.file.FileSize - read));
	nb = read_file (&fs,
			&file.file,
			(char *)addr + read,
			read,
			(file.file.FileSize - read));
	PRINTF ("read_file -> %d\n", nb);
	if (nb < 0) {
	    printf ("read error\n");
	    return (-1);
	}
	read += nb;
    }
    return (read);
}
/*-----------------------------------------------------------------------------
 * dos_dir --
 *-----------------------------------------------------------------------------
 */
int dos_dir (void)
{
    int entry;
    Directory_t dir;
    char *name;


    if ((file.file.dir.attr & ATTR_DIRECTORY) == 0) {
	printf ("%s: not a directory !!\n", file.name);
	return (1);
    }
    entry = 0;
    if ((name = malloc (MAX_VNAMELEN + 1)) == NULL) {
	PRINTF ("Allcation error\n");
	return (1);
    }

    while (vfat_lookup (&file.file,
			file.fs,
			&dir,
			&entry,
			0,
			NULL,
			ACCEPT_DIR | ACCEPT_PLAIN | MATCH_ANY,
			name,
			NULL) == 0) {
	/* Display file info                                                 */
	printf ("%3.3s %9d %s %02d %04d %02d:%02d:%02d %s\n",
		(dir.attr & ATTR_DIRECTORY) ? "dir" : "   ",
		__le32_to_cpu (dir.size),
		month [DOS_MONTH (&dir) - 1],
		DOS_DAY (&dir),
		DOS_YEAR (&dir),
		DOS_HOUR (&dir),
		DOS_MINUTE (&dir),
		DOS_SEC (&dir),
		name);

    }
    free (name);
    return (0);
}