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 * contents herein are donated to the public domain.
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 * contents herein are donated to the public domain.
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 *
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 *
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 * You should apply any license and copyright that you wish to this file,
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 * You should apply any license and copyright that you wish to this file,
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 * replacing this header in its entirety. */
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 * replacing this header in its entirety. */
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/* Extremely primitive 'ls' implementation. Does not sort or stat files,
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 * just here for convenience */
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <string.h>
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#include "errors.h"
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#include "config.h"
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#include "util.h"
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#include "entry.h"
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#include "entry.h"
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#include "ls.h"
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#include "ls.h"
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#include "cmds.h"
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#include "cmds.h"
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static char *cmdname = "ls";
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static char *cmdname = "ls";
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unsigned int ls_scope(const char *path)
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{
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    int fd;
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    DIR *dirp;
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    dirp = opendir(path);
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    if (dirp) {
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        closedir(dirp);
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        return LS_DIR;
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    }
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    fd = open(path, O_RDONLY);
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    if (fd > 0) {
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        close(fd);
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        return LS_FILE;
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    }
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    return LS_BOGUS;
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}
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void ls_print(const char *f)
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{
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    if (ls_scope(f) == LS_FILE)
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        printf("%-40s\n", f);
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    else
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        printf("%-40s <DIR>\n", f);
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    return;
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}
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/* Dispays help for ls in various levels */
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/* Dispays help for ls in various levels */
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void * help_cmd_ls(unsigned int level)
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void * help_cmd_ls(unsigned int level)
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{
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{
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    printf("This is the %s help for '%s'.\n",
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    printf("This is the %s help for '%s'.\n",
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        level ? EXT_HELP : SHORT_HELP, cmdname);
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        level ? EXT_HELP : SHORT_HELP, cmdname);
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    return 0;
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    return CMD_VOID;
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}
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}
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/* Main entry point for ls, accepts an array of arguments */
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int * cmd_ls(char **argv)
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int * cmd_ls(char **argv)
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{
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{
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    unsigned int argc;
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    unsigned int argc;
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    unsigned int i;
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    unsigned int scope;
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    char *buff;
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    DIR *dirp;
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    struct dirent *dp;
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    /* Count the arguments */
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    /* Count the arguments */
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    for (argc = 0; argv[argc] != NULL; argc ++);
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    for (argc = 0; argv[argc] != NULL; argc ++);
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    if (argc > 2) {
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    printf("%s %s\n", TEST_ANNOUNCE, cmdname);
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        printf("%s - Too many arguments. Try `help %s extended'\n",
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            cmdname, cmdname);
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        return CMD_FAILURE;
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    }
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    buff = (char *) malloc(PATH_MAX);
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    if (NULL == buff) {
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    printf("%d arguments passed to %s", argc - 1, cmdname);
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        cli_error(CL_ENOMEM, "%s: ", cmdname);
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        return CMD_FAILURE;
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    }
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    memset(buff, 0, sizeof(buff));
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    if (argc < 2) {
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    if (argc == 1)
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        getcwd(buff, PATH_MAX);
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    else
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        strncpy(buff, argv[1], PATH_MAX);
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    scope = ls_scope(buff);
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    switch (scope) {
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    case LS_BOGUS:
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        cli_error(CL_ENOENT, buff);
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        free(buff);
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        return CMD_FAILURE;
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    case LS_FILE:
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        printf("\n");
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        ls_print(buff);
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        break;
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    case LS_DIR:
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        dirp = opendir(buff);
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        while ((dp = readdir(dirp)))
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            ls_print(dp->d_name);
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        closedir(dirp);
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        return 0;
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        break;
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    }
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    }
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    printf(":\n");
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    free(buff);
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    for (i = 1; i < argc; i++)
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        printf("[%d] -> %s\n", i, argv[i]);
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    return 0;
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    return CMD_SUCCESS;
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}
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}
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