summaryrefslogtreecommitdiff
path: root/src/commands.c
blob: b52a5a10f881fee7e6b9e4eb178e9f72b4840eef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/errno.h>
#include <limits.h>
#include <unistd.h>
#include <time.h>

#include <readline/readline.h>
#include <readline/history.h>

#include <main.h>
#include <commands.h>
#include <completion.h>
#include <utils.h>

#include <shell.h>
#include <users.h>

/* Function which tells you that you can't do this. */
void too_dangerous( char *caller )
{
  fprintf( stderr,
           "%s: Too dangerous for me to distribute.  Write it yourself.\n",
           caller );
}

/* Return non-zero if ARG is a valid argument for CALLER, else print
   an error message and return zero. */
int valid_argument( char *caller, char *arg )
{
  if( !arg || !*arg )
  {
    fprintf( stderr, "%s: Argument required.\n", caller );
    return( 0 );
  }

  return( 1 );
}

/* **************************************************************** */
/*                                                                  */
/*                       SILA Shell Commands                        */
/*                                                                  */
/* **************************************************************** */

/* String to pass to system ().  This is for the LIST, VIEW and RENAME
   commands. */
//static char syscom[PATH_MAX];

/* Print out help for ARG, or for all of the commands if ARG is
   not present. */
int com_help( char *arg )
{
  register int i;
  int printed = 0;

  for( i = 0; current->list[i].name; ++i )
  {
    if( !*arg || (strcmp( arg, current->list[i].name ) == 0) )
    {
      printf( "  %-12s\t- %s.\n", current->list[i].name, current->list[i].doc );
      printed++;
    }
  }

  if( printed )
    printf( "\n" );

  if( !printed )
  {
    printf( "No commands match `%s'.  Possibilties are:\n", arg );

    for( i = 0; current->list[i].name; ++i )
    {
      /* Print in six columns. */
      if( printed == 6 )
      {
        printed = 0;
        printf( "\n" );
      }

      printf( "%s\t", current->list[i].name );
      printed++;
    }

    if( printed )
      printf( "\n" );
  }
  return( 0 );
}

/* The user wishes to quit using this program.  Just set DONE non-zero. */
int com_quit( char *arg )
{
  done = 1;
  return( 0 );
}


/*
  Menu:
 */
int com_shell( char *arg )
{
  if( !arg ) arg = "";

  current = &shell;

  initialize_readline();
  return( 0 );
}

int com_users( char *arg )
{
  if( !arg ) arg = "";

  current = &users;

  initialize_readline();
  return( 0 );
}

int com_top( char *arg )
{
  if( !arg ) arg = "";

  current = &top;

  initialize_readline();
  return( 0 );
}