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funcs.h
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C/C++ Source or Header
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1993-03-29
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6KB
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142 lines
#ifndef FUNCSH
#define FUNCSH
/* Copyright (C) 1993 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this software; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* t. lord Wed Jan 27 15:31:21 1993 */
#include "global.h"
/*
* The structure CMD_FUNC describes C functions that can be called
* interactively.
*
* FUNC_NAME: The name that `execute-function' uses.
* FUNC_DOC: A `char **' of documentation for the function (NULL terminated).
* FUNC_ARGS: Similar to an emacs interactive string, however,
* rather than a newline separated string, Oleo uses a `char **'.
* FUNC_FUNC: The C function the implements the command.
* INIT_CODE: an array of macros or NULL to be executed before editting
* begins on an interactive argument.
*
* The syntax of FUNC_ARGS:
*
* In this list, ? stands for an optional arbitrary edit buffer name,
* delimited by <>. For example, to prompt for a file:
*
* "fw<spreadsheets>Save spreadsheet: "
*
* c? - prompt for a single character.
* If written c', then the prompt times out after a small
* number of seconds, and -1 is passed to the function.
* If written c#, then the first character of the prompt string will
* be passed to the function and the user will not be prompted.
* C? - Command name (or the address of a macro or name of a variable)
* d - Prompt for a double precision floating point number.
* fr, fw - Get a file name and pass the opened FILE * to the
* function. The file is closed when the function returns.
* fn - a file name.
* F - read a cell
* k - read a keysequence (passed as `struct key').
* K? - read the name of a keymap
* l - last character typed to invoke this command.
* m - the prompt should be a keymap name. The user is given
* an opertunity to interact using that map as the top-level
* map until exit-minibuffer is called. This generates no
* arguments to the function.
* Written m', only one keysequence is read, and that is passed
* as a struct keyseq *.
* M - yes or no verify if the buffer has been modified.
* N? - Prefix arg as a number, or if none, read from the minibuffer
* Input can be constrained to a particular range like this:
* "N[1,16]Format number [1-16]: "
* n? - like `N', but it always prompts (never uses the prefix).
* p - Prefix arg converted to number. Does not do I/O.
* However, this may be modified by following `p' with:
* ? - pass 1 if a prefix arg was explicitly provided, else 0.
* r - pass the raw prefix as `struct line *' (NOT IMPLEMENTED)
* r? - Prompt for a range argument (use the mark if it is set).
* R? - Prompt for a range argument (don't use the mark, though).
* s? - Prompt the user for an arbitrary string.
* S? - Any symbol. If written S', then a NULL char * will be passed
* if the user doesn't provide a symbol name.
* V - enter a vi-like navigation state.
* In this case, the_cmd_arg.inc_cmd should be set to a hook that
* will repeatedly be called with two integer arguments (a direction
* and repeat count). (e.g. imove)
* w - read a word (whitespace delimited). w' means that the empty
* string (normally forbidden) stands for NULL.
* #n - N should be an integer. Pass N (as an int). Does not do I/O.
* . - Return the {mk,}cu{row,col} from the command's frame.
* Written .', the mark is ignored, and a one cell range of
* cu{row,col} is returned.
* $ - Edit a formula, beginning with the current cells formula as
* default.
* [ - like c, except that input is constrained to a particular
* character set. e.g. "[upd][U]nprotected [P]rotected [D]efault "
* = - pass the (expanded) prompt as a string arument.
*
* In addition, if the first character of the first FUNC_ARGS string is a `+'
* then in expanded macro syntax, the name of the function may be followed
* by an integer that will be made the value of the prefix argument. For
* example: `{go-right 5}' because the FUNC_ARGS string for go-right is: `+p'.
*/
typedef void (*interactive_function) ();
struct cmd_func
{
char *func_name;
char ** func_doc;
char ** func_args;
char ** init_code;
interactive_function func_func;
};
/*
* There is a 2d (argv style) array of command functions. Each 0 dimension
* slice is called a `vector'. The first vector contains the oleo built-ins.
* When looking for a function of a particular name, the array is
* searched in vector-major order.
*
*/
extern int num_funcs;
extern struct cmd_func **the_funcs;
#define find_func(VEC,CMD,NAME) find_function(VEC,CMD,NAME,strlen(NAME))
#ifdef __STDC__
extern int find_function (int * vec_out, struct cmd_func ** cmd_out, char * name, int len);
extern void init_named_macro_strings (void);
extern void name_macro_string (char * name, char * str);
#else
extern int find_function ();
extern void init_named_macro_strings ();
extern void name_macro_string ();
#endif
#endif /* FUNCSH */