308 lines
8.9 KiB
C
308 lines
8.9 KiB
C
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/* $Header: /nw/tony/src/stevie/src/RCS/help.c,v 1.9 89/08/06 09:50:09 tony Exp $
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*
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* Routine to display a command summary.
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*/
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#include "stevie.h"
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extern char *Version;
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static int helprow;
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#ifdef HELP
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static void longline();
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bool_t
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help()
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{
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/***********************************************************************
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* First Screen: Positioning within file, Adjusting the Screen
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***********************************************************************/
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ClearDisplay();
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windgoto(helprow = 0, 0);
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longline(
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" Positioning within file\n"
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" =======================\n"
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" ^F Forward screenfull Developed by:\n"
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" ^B Backward screenfull Tony Andrews\n");
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longline(
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" ^D scroll down half screen\n"
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" ^U scroll up half screen Based on a program by:\n");
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longline(
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" G Goto line (end default) Tim Thompson\n"
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" ]] next function\n"
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" [[ previous function\n"
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" /re next occurence of regular expression 're'\n");
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longline(
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" ?re prior occurence of regular expression 're'\n"
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" n repeat last / or ?\n"
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" N reverse last / or ?\n"
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" % find matching (, ), {, }, [, or ]\n");
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longline(
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"\n"
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" Adjusting the screen\n"
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" ====================\n"
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" ^L Redraw the screen\n"
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" ^E scroll window down 1 line\n"
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" ^Y scroll window up 1 line\n");
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longline(
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" z<RETURN> redraw, current line at top\n"
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" z- ... at bottom\n"
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" z. ... at center\n");
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windgoto(0, 52);
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longline(Version);
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windgoto(helprow = Rows-2, 47);
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longline("<Press space bar to continue>\n");
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windgoto(helprow = Rows-1, 47);
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longline("<Any other key will quit>");
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if ( vgetc() != ' ' )
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return TRUE;
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/***********************************************************************
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* Second Screen: Character positioning
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***********************************************************************/
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ClearDisplay();
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windgoto(helprow = 0, 0);
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longline(
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" Character Positioning\n"
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" =====================\n"
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" ^ first non-white\n"
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" 0 beginning of line\n"
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" $ end of line\n"
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" h backward\n");
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longline(
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" l forward\n"
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" ^H same as h\n"
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" space same as l\n"
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" fx find 'x' forward\n");
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longline(
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" Fx find 'x' backward\n"
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" tx upto 'x' forward\n"
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" Tx upto 'x' backward\n"
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" ; Repeat last f, F, t, or T\n");
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longline(
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" , inverse of ;\n"
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" | to specified column\n"
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" % find matching (, ), {, }, [, or ]\n");
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windgoto(helprow = Rows-2, 47);
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longline("<Press space bar to continue>\n");
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windgoto(helprow = Rows-1, 47);
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longline("<Any other key will quit>");
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if ( vgetc() != ' ' )
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return TRUE;
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/***********************************************************************
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* Third Screen: Line Positioning, Marking and Returning
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***********************************************************************/
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ClearDisplay();
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windgoto(helprow = 0, 0);
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longline(
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" Line Positioning\n"
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" ================\n"
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" H home window line\n"
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" L last window line\n"
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" M middle window line\n");
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longline(
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" + next line, at first non-white\n"
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" - previous line, at first non-white\n"
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" CR return, same as +\n"
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" j next line, same column\n"
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" k previous line, same column\n");
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longline(
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"\n"
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" Marking and Returning\n"
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" =====================\n"
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" `` previous context\n"
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" '' ... at first non-white in line\n");
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longline(
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" mx mark position with letter 'x'\n"
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" `x to mark 'x'\n"
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" 'x ... at first non-white in line\n");
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longline("\n"
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" Undo & Redo\n"
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" =============\n"
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" u undo last change\n"
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" U restore current line\n"
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" . repeat last change\n");
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windgoto(helprow = Rows-2, 47);
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longline("<Press space bar to continue>\n");
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windgoto(helprow = Rows-1, 47);
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longline("<Any other key will quit>");
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if ( vgetc() != ' ' )
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return TRUE;
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/***********************************************************************
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* Fourth Screen: Insert & Replace,
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***********************************************************************/
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ClearDisplay();
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windgoto(helprow = 0, 0);
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longline(
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" Insert and Replace\n"
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" ==================\n"
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" a append after cursor\n"
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" i insert before cursor\n"
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" A append at end of line\n"
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" I insert before first non-blank\n");
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longline(
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" o open line below\n"
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" O open line above\n"
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" rx replace single char with 'x'\n"
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" R replace characters\n");
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longline(
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"\n"
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" Words, sentences, paragraphs\n"
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" ============================\n"
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" w word forward\n"
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" b back word\n"
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" e end of word\n"
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" ) to next sentence (not yet)\n"
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" } to next paragraph (not yet)\n");
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longline(
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" ( back sentence (not yet)\n"
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" { back paragraph (not yet)\n"
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" W blank delimited word\n"
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" B back W\n"
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" E to end of W\n");
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windgoto(helprow = Rows-2, 47);
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longline("<Press space bar to continue>\n");
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windgoto(helprow = Rows-1, 47);
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longline("<Any other key will quit>");
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if ( vgetc() != ' ' )
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return TRUE;
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/***********************************************************************
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* Fifth Screen: Misc. operations,
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***********************************************************************/
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ClearDisplay();
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windgoto(helprow = 0, 0);
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longline(
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" Miscellaneous Commands\n"
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" ======================\n");
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longline(
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" :w write back changes\n"
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" :wq write and quit\n"
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" :x write if modified, and quit\n"
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" :q quit\n"
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" :q! quit, discard changes\n"
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" :e name edit file 'name'\n");
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longline(
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" :e! reedit, discard changes\n"
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" :e # edit alternate file\n"
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" :w name write file 'name'\n");
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longline(
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" :n edit next file in arglist\n"
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" :N edit prior file in arglist\n"
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" :n args specify new arglist (not yet)\n"
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" :rew rewind arglist\n"
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" :f show current file and lines\n");
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longline(
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" :f file change current file name\n"
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" :g/pat/p|d global command (print or delete only)\n"
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" :s/p1/p2/ text substitution (trailing 'g' optional)\n"
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"");
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longline(
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" :ta tag to tag file entry 'tag'\n"
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" ^] :ta, current word is tag\n"
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" :sh run an interactive shell\n"
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" :!cmd execute a shell command\n"
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"");
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windgoto(helprow = Rows-2, 47);
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longline("<Press space bar to continue>\n");
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windgoto(helprow = Rows-1, 47);
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longline("<Any other key will quit>");
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if ( vgetc() != ' ' )
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return TRUE;
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/***********************************************************************
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* Sixth Screen: Operators, Misc. operations, Yank & Put
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***********************************************************************/
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ClearDisplay();
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windgoto(helprow = 0, 0);
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longline(
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" Operators (double to affect lines)\n"
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" ==================================\n"
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" d delete\n"
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" c change\n");
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longline(
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" < left shift\n"
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" > right shift\n"
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" y yank to buffer\n"
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" ! filter lines\n");
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longline("\n"
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" Miscellaneous operations\n"
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" ========================\n"
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" C change rest of line\n"
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" D delete rest of line\n"
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" s substitute chars\n");
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longline(
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" S substitute lines (not yet)\n"
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" J join lines\n"
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" x delete characters\n"
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" X ... before cursor\n");
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longline("\n"
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" Yank and Put\n"
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" ============\n"
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" p put back text\n"
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" P put before\n"
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" Y yank lines");
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windgoto(helprow = Rows-1, 47);
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longline("<Press any key>");
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(void) vgetc();
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return TRUE;
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}
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static void
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longline(p)
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char *p;
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{
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register char *s;
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for ( s = p; *s ;s++ ) {
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if ( *s == '\n' )
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windgoto(++helprow, 0);
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else
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outchar(*s);
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}
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}
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#else
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bool_t
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help()
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{
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msg("Sorry, help not configured");
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return FALSE;
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}
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#endif
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