help.c

早期freebsd实现

/*
 * Help functions for sc 
 * R. Bond, 1988
 * $Revision: 6.8 $
 */

#include <curses.h>
#include "sc.h"

char *intro[] = {
" ",
" Overview:",
" ",
" A:   This overview",
" B:   Options",
" C:   Cursor movement commands",
" D:   Cell entry and editing commands",
" E:   Line Editing",
" F:   File commands",
" G:   Row and column commands",
" H:   Range commands",
" I:   Miscellaneous commands",
" J:   Variable names/Expressions",
" K:   Range functions",
" L:   Numeric functions",
" M:   String functions",
" N:   Financial functions",
" O:   Time and date functions",
" ",
" Q:   Return to main spreadsheet",
(char *)0
};

char *options[] = {
" ",
" B: Options",
" ",
"     ^To  Toggle options. Toggle one option selected by o:",
" ",
"          a    Recalculate automatically or on ``@'' commands.",
"          c    Current cell highlighting enable/disable.",  
"          e    External function execution enable/disable.",
"          n    If enabled, a digit starts a numeric value.",
"          t    Top line display enable/disable.",
"          x    Encrypt/decrypt database and listing files.",
"          $    Dollar prescale.  If enabled, all numeric constants.",
"               (not expressions) entered are multipled by 0.01.",
" ",
"     S    Set options.  Options include:",
" ",
"          byrows        Recalculate in row order. (default)",
"          bycols        Recalculate in column order.",
"          iterations=n  Set the number of iterations allowed. (10)",
"          tblstyle=xx   Set ``T'' output style to:",
"                        0 (none), tex, latex, or tbl.",
(char *)0
};

char *cursor[] = {
" ",
" C: Cell cursor movement (always OK):",
" ",
"     ^N ^P ^B ^F Down, up, back, forward",
"     ^Ed         Go to end of range.  Follow ^E by a direction indicator",
"                 such as ^P or j.",
"     Arrow keys (if the terminal and termcap support them.)",
" ",
" Cell cursor movement if no prompt active:",
"     j,k,l,h    Down, up, right, left",
"     SPACE      Forward",
"     ^H         Back",
"     TAB        Forward, otherwise starts/ends a range",
"     ^          Up to row 0 of the current column.",
"     #          Down to the last valid row of the current column.",
"     0          Back to column A.  Preface with ^U if numeric mode.",
"     $          Forward to the last valid column of the current row.",
"     b          Back then up to the previous valid cell.",
"     w          Forward then down to the next valid cell.",
"     g          Go to a cell.  Cell name, range name, quoted string,",
"                or a number specify which cell.",
(char *)0
};


char *cell[] = {
" ",
" D: Cell entry and editing commands:",
" ",
"     =    Enter a numeric constant or expression.",
"     <    Enter a left justified string or string expression.",
"     \",>  Enter a right justified string or string expression.",
"     e    Edit the current cell's numeric value.",
"     E    Edit the current cell's string part.",
"     x    Clear the current cell.",
"     c    Copy the last marked cell to the current cell.",
"     m    Mark a cell to be used as the source for ``c''",
"     +    Increment numeric part",
"     -    Decrement numeric part",
" ",
"     In numeric mode, a decimal digit, ``+'', ``-'', and ``.'' all start",
"     a new numeric constant or expression.",
(char *)0
};


char *vi[] = {
" ",
" E: Line Editor",
" ",
"     Hitting the ESC key while entering any command on the top line",
"     will start a one-line vi-style editor.  Supported commands:",
" ",
"     ESC q        Abort command entry.",
"     h l          Move cursor forward, backward.",
"     0 $          Move cursor to the beginning, end of the line.",
"     b w          Move cursor forward/back one word.",
"     fc           Move cursor to character c.",
"     tc           Move the cursor the the character before c.",
"     i a          Enter insert mode before/after the cursor.",
"     I            Move to cursor column 0 and enter insert mode.",
"     x X          Delete the character under/before the cursor.",
"     rc           Replace the character under the cursor with c.",
"     cm           Change - m = b,f,h,l,t or w.",
"     dm           Delete - m = b,f,h,l,t or w.",
"     R            Enter replace (overstrike) mode.",
"     + j - k /    Forward/backward/search the command history.",
"     n            Repeat last history search.",
"     . u          Repeat/undo the last command.",
(char *)0
};

char *file[] = {
" ",
" F: File commands:",
" ",
"     G    Get a new database from a file. ",
"     M    Merge a new file into the current database.",
"     P    Put the current database into a file.",
"     W    Write a listing of the current database into a file in",
"          a form that matches its appearance on the screen.",
"     T    Write a listing of the current database to a file, but",
"          put delimiters between each pair of fields.",
"          Optionally brackets output with control lines for ``tbl'',",
"          ``LaTeX'', or ``TeX''.",
" ",
"     If encryption mode is set, file I/O will be encrypted/decrypted.",
"     ``\"| program\"'' for a file name will pipe (unencrypted) output to",
"     a program for Put, Write and Table.  If a cell name is used",
"     as the file name, the cell's string part will be used as the",
"     file name.",
(char *)0
};


char *row[] = {
" ",
" G: Row and column commands:",
" ",
"     ir, ic      Insert a new, empty row (column)",
"     ar, ac      Append a new copy of the current row (column)",
"     dr, dc      Delete the current row (column)",
"     pr, pc, pm  Pull deleted cells back into the spreadsheet",
"                 Insert rows, columns or merge the cells.",
"     vr, vc      Remove expressions from the affected rows (columns),",
"                 leaving only the values.",
"     zr, zc      Hide (``zap'') the current row (column)",
"     sr, sc      Show hidden rows (columns)",
"     f           Set the output format to be used with the values of",
"                 each cell in this column.  Enter field width and",
"                 number of fractional digits.  A preceding count can be",
"                 used to change more than one column.",
" ",
"     Commands which move or copy cells also modify the row and column ",
"     references in the new cell expressions.  Use ``fixed'' or the",
"     ``$'' style cell reference to supress the change.",
(char *)0
};


char *range[] = {
" ",
" H: Range commands:",
" ",
"     /x   Clear a range. ",
"     /v   Remove the expressions from a range of cells, leaving ",
"          just the values.",
"     /c   Copy a source range to a destination range.",
"     /f   Fill a range with constant values starting with a given",
"          value and increasing by a given increment.",
"     /d   Assign a name to a cell or a range of cells.  Give the",
"          the name, surrounded by quotes, and either a cell name such",
"          as ``A10'' or a range such as ``a1:b20''.",
"     /s   Shows the currently defined range names.  Pipe output to",
"          sort, then to less.",
"     /u   Use this command to undefine a previously defined range",
"          name.",
" ",
"     Range operations affect a rectangular region on the screen",
"     defined by the upper left and lower right cells in the region.",
"     A range is specified by giving the cell names separated by ``:'',",
"     such as ``a20:k52''.  Another way to refer to a range is to use",
"     a name previously defined using ``/d''.",
(char *)0
};


char *misc[] = {
" ",
" I: Miscellaneous commands:",
" ",
"     Q q ^C   Exit from the program.",
"     ^G ESC   Abort entry of the current command.",
"     ?        Help",
"     !        Shell escape.  Enter a command to run.  ``!!'' repeats",
"              the last command.  Just ``!'' starts an interactive shell.",
"     ^L       Redraw the screen.",
"     ^R       Redraw the screen.  Highlight cells with values but no",
"              expressions.",
"     ^X       Redraw the screen.  Show formulas, not values.",