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(* Orpie -- a stack-based RPN calculator for the console
* Copyright (C) 2003-2004 Paul Pelzl
*
* 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 of the License, 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Please send bug reports, patches, etc. to Paul Pelzl at
* <pelzlpj@eecs.umich.edu>.
*)
open Curses;;
open Rpc_calc;;
open Operations;;
open Complex;;
exception Not_handled;;
(* help_win is provided as an option, because it may be dropped if
* the screen width is too small *)
type screen_t = {stdscr:window; mutable lines:int; mutable cols:int;
mutable help_win:window option; mutable hw_lines:int; mutable hw_cols:int;
mutable stack_win:window; mutable sw_lines:int; mutable sw_cols:int;
mutable entry_win:window; mutable ew_lines:int; mutable ew_cols:int};;
type help_mode_t = | StandardHelp | StandardIntHelp | AbbrevHelp | VarHelp;;
type entry_t = | IntEntry | FloatEntry | ComplexEntry
| FloatMatrixEntry | ComplexMatrixEntry | VarEntry;;
type interface_mode_t = | StandardEntryMode | IntEditMode | AbbrevEntryMode
| VarEditMode | BrowsingMode | UnitEditMode;;
type complex_entry_element_t =
{mutable re_mantissa : string; mutable re_exponent : string;
mutable im_mantissa : string; mutable im_exponent : string;
mutable is_polar : bool};;
let max_matrix_size = 1000;;
let all_taglines = [| "RPN for the masses";
"'=' is for the weak";
"swap drop dup view";
"I hate the mouse";
"now w/ 800% more stack";
"powered by Ocaml";
"compute _this_";
"interface as art";
"kick that data's ass";
"Nice.";
"configurability is key";
":wq";
"the \"Mutt\" of calcs"|];
(* everything you need to know about the interface state goes in this variable *)
type interface_state_t =
{version : string; (* program version string *)
tagline : string;
calc : rpc_calc;
mutable scr : screen_t; (* curses screen with two or three subwindows *)
mutable run_calc : bool; (* exit when run_true becomes false *)
mutable stack_bottom_row : int; (* controls what portion of the stack is viewable *)
mutable stack_selection : int; (* in stack browsing mode, this item is selected *)
mutable interface_mode : interface_mode_t; (* standard mode or stack browsing mode *)
mutable horiz_scroll : int; (* controls how far an element is scrolled left/right *)
mutable help_mode : help_mode_t; (* controls the mode of context-sensitive help *)
mutable help_page : int; (* which help page is being viewed *)
mutable has_entry : bool; (* whether or not the entry buffer has anything in it *)
mutable entry_type : entry_t; (* the current type of data being entered *)
mutable int_entry_buffer : string; (* holds characters entered for int data type *)
mutable is_entering_base : bool; (* is the user is entering a base *)
mutable int_base_string : string; (* one-character representation of the base *)
mutable is_entering_exponent : bool; (* is the user entering a scientific notation exponent *)
mutable abbrev_entry_buffer : string; (* stores characters entered in abbrev entry mode *)
mutable matched_abbrev_entry : string; (* stores the command-completed abbrev entry *)
mutable matched_abbrev_entry_list : string list; (* stores the list of all possible command completions *)
gen_buffer : complex_entry_element_t array; (* storage for floating-point (array)-based types *)
mutable variable_entry_buffer : string; (* stores characters entered in variable entry mode *)
mutable variable_entry_buffer_back : string; (* used in variable completion *)
mutable matched_variables : string list; (* stores the list of all matching variable completions *)
mutable sorted_variables : string list; (* stores an alphabetically sorted list of all variables *)
mutable completion : int option; (* which one of the list elements to complete variables with *)
mutable curr_buf : int; (* which element of gen_buffer is being edited *)
mutable is_entering_imag : bool; (* is the imaginary component being edited *)
mutable matrix_cols : int; (* how many cols in the matrix being entered *)
mutable has_multiple_rows : bool; (* does the matrix being entered have >1 row *)
mutable units_entry_buffer : string; (* stores unit characters entered *)
mutable is_entering_units : bool} (* is the user appending units *)
(* create and initialize an interface with default settings *)
let make (c : rpc_calc) (std : screen_t) =
Random.self_init ();
let tagline_index = Random.int (Array.length all_taglines) in
let iface = {
version = Version.version;
tagline = all_taglines.(tagline_index);
calc = c;
scr = std;
run_calc = true;
stack_bottom_row = 1;
stack_selection = 1;
interface_mode = StandardEntryMode;
horiz_scroll = 0;
help_mode = StandardHelp;
help_page = 0;
has_entry = false;
entry_type = FloatEntry;
int_entry_buffer = "";
is_entering_base = false;
int_base_string = "";
is_entering_exponent = false;
abbrev_entry_buffer = "";
matched_abbrev_entry = "";
matched_abbrev_entry_list = [];
variable_entry_buffer = "";
variable_entry_buffer_back = "";
matched_variables = [];
sorted_variables = [];
completion = None;
gen_buffer = Array.make max_matrix_size
{re_mantissa = ""; re_exponent = "";
im_mantissa = ""; im_exponent = ""; is_polar = false};
curr_buf = 0;
is_entering_imag = false;
matrix_cols = 1;
has_multiple_rows = false;
units_entry_buffer = "";
is_entering_units = false
} in
iface
(* arch-tag: DO_NOT_CHANGE_2e912989-cdb2-498a-9bb3-b6d76e94f3a5 *)
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