| 1 | /* ELLE - Copyright 1982, 1987 by Ken Harrenstien, SRI International
|
|---|
| 2 | * This software is quasi-public; it may be used freely with
|
|---|
| 3 | * like software, but may NOT be sold or made part of licensed
|
|---|
| 4 | * products without permission of the author.
|
|---|
| 5 | */
|
|---|
| 6 | /* EEHELP - Help function
|
|---|
| 7 | */
|
|---|
| 8 |
|
|---|
| 9 | #include "elle.h" /* include structure definitions */
|
|---|
| 10 |
|
|---|
| 11 |
|
|---|
| 12 | #if FX_DESCRIBE
|
|---|
| 13 | /* EFUN: "Describe" */
|
|---|
| 14 | /* DESCRIBE - Help-command hack.
|
|---|
| 15 | ** Crude approximation of EMACS function.
|
|---|
| 16 | */
|
|---|
| 17 | static struct buffer *help_buf;
|
|---|
| 18 |
|
|---|
| 19 | f_describe()
|
|---|
| 20 | { register char *cp;
|
|---|
| 21 | register int i, c;
|
|---|
| 22 | char str[10];
|
|---|
| 23 | struct buffer *savbuf, *b, *make_buf();
|
|---|
| 24 | chroff bdot;
|
|---|
| 25 |
|
|---|
| 26 | saynow("Help for command: ");
|
|---|
| 27 | i = cmd_idx(c = cmd_read()); /* Get function idx for cmd */
|
|---|
| 28 | if(c&CB_META) sayntoo("M-");
|
|---|
| 29 | if(i == FN_PFXMETA)
|
|---|
| 30 | { sayntoo("M-");
|
|---|
| 31 | i = cmd_idx(c = (cmd_read() | CB_META));
|
|---|
| 32 | }
|
|---|
| 33 | else if(i == FN_PFXEXT)
|
|---|
| 34 | { sayntoo("^X-");
|
|---|
| 35 | i = cmd_idx(c = (cmd_read() | CB_EXT));
|
|---|
| 36 | }
|
|---|
| 37 | str[0] = c&0177;
|
|---|
| 38 | str[1] = 0;
|
|---|
| 39 | sayntoo(str);
|
|---|
| 40 |
|
|---|
| 41 | /* Now read in the help file, if necessary */
|
|---|
| 42 | savbuf = cur_buf;
|
|---|
| 43 | if(help_buf)
|
|---|
| 44 | chg_buf(help_buf);
|
|---|
| 45 | else
|
|---|
| 46 | {
|
|---|
| 47 | saynow("Loading ");
|
|---|
| 48 | sayntoo(ev_helpfile);
|
|---|
| 49 | sayntoo("...");
|
|---|
| 50 | chg_buf(help_buf = make_buf(" **HELP**"));
|
|---|
| 51 | if(read_file(ev_helpfile) == 0)
|
|---|
| 52 | { chg_buf(savbuf);
|
|---|
| 53 | kill_buf(help_buf);
|
|---|
| 54 | help_buf = 0;
|
|---|
| 55 | return;
|
|---|
| 56 | }
|
|---|
| 57 | }
|
|---|
| 58 |
|
|---|
| 59 |
|
|---|
| 60 | /* Find function index in current buffer */
|
|---|
| 61 | cp = str;
|
|---|
| 62 | *cp++ = '<';
|
|---|
| 63 | *cp++ = 'F';
|
|---|
| 64 | cp = dottoa(cp, (chroff)i);
|
|---|
| 65 | *cp++ = '>';
|
|---|
| 66 | e_gobob();
|
|---|
| 67 | if(e_search(str, cp-str, 0) == 0)
|
|---|
| 68 | sayntoo(" No help found");
|
|---|
| 69 | else
|
|---|
| 70 | {
|
|---|
| 71 | bdot = e_dot();
|
|---|
| 72 | while(!e_lblankp()) e_gonl(); /* Move past 1st blank line */
|
|---|
| 73 | b = make_buf(" *SHOW*");
|
|---|
| 74 | sb_sins((SBBUF *)b, e_copyn(bdot - e_dot()));
|
|---|
| 75 | mk_showin(b); /* Show the stuff */
|
|---|
| 76 | kill_buf(b);
|
|---|
| 77 | sayclr();
|
|---|
| 78 | }
|
|---|
| 79 | chg_buf(savbuf);
|
|---|
| 80 | }
|
|---|
| 81 | #endif /*FX_DESCRIBE*/
|
|---|
