82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/* ELLE - Copyright 1982, 1987 by Ken Harrenstien, SRI International
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* This software is quasi-public; it may be used freely with
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* like software, but may NOT be sold or made part of licensed
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* products without permission of the author.
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*/
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/* EEHELP - Help function
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*/
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#include "elle.h" /* include structure definitions */
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#if FX_DESCRIBE
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/* EFUN: "Describe" */
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/* DESCRIBE - Help-command hack.
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** Crude approximation of EMACS function.
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*/
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static struct buffer *help_buf;
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f_describe()
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{ register char *cp;
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register int i, c;
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char str[10];
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struct buffer *savbuf, *b, *make_buf();
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chroff bdot;
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saynow("Help for command: ");
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i = cmd_idx(c = cmd_read()); /* Get function idx for cmd */
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if(c&CB_META) sayntoo("M-");
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if(i == FN_PFXMETA)
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{ sayntoo("M-");
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i = cmd_idx(c = (cmd_read() | CB_META));
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}
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else if(i == FN_PFXEXT)
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{ sayntoo("^X-");
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i = cmd_idx(c = (cmd_read() | CB_EXT));
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}
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str[0] = c&0177;
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str[1] = 0;
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sayntoo(str);
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/* Now read in the help file, if necessary */
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savbuf = cur_buf;
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if(help_buf)
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chg_buf(help_buf);
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else
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{
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saynow("Loading ");
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sayntoo(ev_helpfile);
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sayntoo("...");
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chg_buf(help_buf = make_buf(" **HELP**"));
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if(read_file(ev_helpfile) == 0)
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{ chg_buf(savbuf);
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kill_buf(help_buf);
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help_buf = 0;
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return;
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}
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}
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/* Find function index in current buffer */
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cp = str;
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*cp++ = '<';
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*cp++ = 'F';
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cp = dottoa(cp, (chroff)i);
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*cp++ = '>';
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e_gobob();
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if(e_search(str, cp-str, 0) == 0)
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sayntoo(" No help found");
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else
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{
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bdot = e_dot();
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while(!e_lblankp()) e_gonl(); /* Move past 1st blank line */
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b = make_buf(" *SHOW*");
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sb_sins((SBBUF *)b, e_copyn(bdot - e_dot()));
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mk_showin(b); /* Show the stuff */
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kill_buf(b);
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sayclr();
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}
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chg_buf(savbuf);
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}
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#endif /*FX_DESCRIBE*/
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