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1.1 root 1: /* Header file for command-reading library command.c.
2: Copyright (C) 1986 Free Software Foundation, Inc.
3:
4: NO WARRANTY
5:
6: BECAUSE THIS PROGRAM IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY
7: NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT
8: WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC,
9: RICHARD M. STALLMAN AND/OR OTHER PARTIES PROVIDE THIS PROGRAM "AS IS"
10: WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
11: BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
12: FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY
13: AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
14: DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
15: CORRECTION.
16:
17: IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M.
18: STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., AND/OR ANY OTHER PARTY
19: WHO MAY MODIFY AND REDISTRIBUTE THIS PROGRAM AS PERMITTED BELOW, BE
20: LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR
21: OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
22: USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
23: DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR
24: A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) THIS
25: PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
26: DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.
27:
28: GENERAL PUBLIC LICENSE TO COPY
29:
30: 1. You may copy and distribute verbatim copies of this source file
31: as you receive it, in any medium, provided that you conspicuously and
32: appropriately publish on each copy a valid copyright notice "Copyright
33: (C) 1986 Free Software Foundation, Inc."; and include following the
34: copyright notice a verbatim copy of the above disclaimer of warranty
35: and of this License. You may charge a distribution fee for the
36: physical act of transferring a copy.
37:
38: 2. You may modify your copy or copies of this source file or
39: any portion of it, and copy and distribute such modifications under
40: the terms of Paragraph 1 above, provided that you also do the following:
41:
42: a) cause the modified files to carry prominent notices stating
43: that you changed the files and the date of any change; and
44:
45: b) cause the whole of any work that you distribute or publish,
46: that in whole or in part contains or is a derivative of this
47: program or any part thereof, to be licensed at no charge to all
48: third parties on terms identical to those contained in this
49: License Agreement (except that you may choose to grant more extensive
50: warranty protection to some or all third parties, at your option).
51:
52: c) You may charge a distribution fee for the physical act of
53: transferring a copy, and you may at your option offer warranty
54: protection in exchange for a fee.
55:
56: Mere aggregation of another unrelated program with this program (or its
57: derivative) on a volume of a storage or distribution medium does not bring
58: the other program under the scope of these terms.
59:
60: 3. You may copy and distribute this program (or a portion or derivative
61: of it, under Paragraph 2) in object code or executable form under the terms
62: of Paragraphs 1 and 2 above provided that you also do one of the following:
63:
64: a) accompany it with the complete corresponding machine-readable
65: source code, which must be distributed under the terms of
66: Paragraphs 1 and 2 above; or,
67:
68: b) accompany it with a written offer, valid for at least three
69: years, to give any third party free (except for a nominal
70: shipping charge) a complete machine-readable copy of the
71: corresponding source code, to be distributed under the terms of
72: Paragraphs 1 and 2 above; or,
73:
74: c) accompany it with the information you received as to where the
75: corresponding source code may be obtained. (This alternative is
76: allowed only for noncommercial distribution and only if you
77: received the program in object code or executable form alone.)
78:
79: For an executable file, complete source code means all the source code for
80: all modules it contains; but, as a special exception, it need not include
81: source code for modules which are standard libraries that accompany the
82: operating system on which the executable file runs.
83:
84: 4. You may not copy, sublicense, distribute or transfer this program
85: except as expressly provided under this License Agreement. Any attempt
86: otherwise to copy, sublicense, distribute or transfer this program is void and
87: your rights to use the program under this License agreement shall be
88: automatically terminated. However, parties who have received computer
89: software programs from you with this License Agreement will not have
90: their licenses terminated so long as such parties remain in full compliance.
91:
92: 5. If you wish to incorporate parts of this program into other free
93: programs whose distribution conditions are different, write to the Free
94: Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not yet
95: worked out a simple rule that can be stated here, but we will often permit
96: this. We will be guided by the two goals of preserving the free status of
97: all derivatives of our free software and of promoting the sharing and reuse of
98: software.
99:
100:
101: In other words, you are welcome to use, share and improve this program.
102: You are forbidden to forbid anyone else to use, share and improve
103: what you give them. Help stamp out software-hoarding! */
104:
105:
106: /* This structure records one command'd definition. */
107:
108: struct cmd_list_element
109: {
110: /* Points to next command in this list. */
111: struct cmd_list_element *next;
112:
113: /* Name of this command. */
114: char *name;
115:
116: /* Command class; class values are chosen by application program. */
117: int class;
118:
119: /* Function definition of this command.
120: Zero for command class names and for help topics that
121: are not really commands. */
122: void (*function) ();
123:
124: /* Documentation of this command (or help topic).
125: First line is brief documentation; remaining lines form, with it,
126: the full documentation. First line should end with a period.
127: Entire string should also end with a period, not a newline. */
128: char *doc;
129:
130: /* Auxiliary information.
131: It is up to the calling program to decide what this means. */
132: char *aux;
133:
134: /* Nonzero identifies a prefix command. For them, the address
135: of the variable containing the list of subcommands. */
136: struct cmd_list_element **prefixlist;
137:
138: /* For prefix commands only:
139: String containing prefix commands to get here: this one
140: plus any others needed to get to it. Should end in a space.
141: It is used before the word "command" in describing the
142: commands reached through this prefix. */
143: char *prefixname;
144:
145: /* For prefix commands only:
146: nonzero means do not get an error if subcommand is not
147: recognized; call the prefix's own function in that case. */
148: char allow_unknown;
149:
150: /* Nonzero says this is an abbreviation, and should not
151: be mentioned in lists of commands. */
152: char abbrev_flag;
153: };
154:
155: /* Forward-declarations of the entry-points of command.c. */
156:
157: extern struct cmd_list_element *add_cmd ();
158: extern struct cmd_list_element *add_alias_cmd ();
159: extern struct cmd_list_element *add_prefix_cmd ();
160: extern struct cmd_list_element *lookup_cmd ();
161: extern void delete_cmd ();
162: extern void help_cmd ();
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