mirror of https://github.com/GnoConsortium/gno.git
346 lines
7.5 KiB
C
346 lines
7.5 KiB
C
/*
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* STEVIE - Simply Try this Editor for VI Enthusiasts
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*
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* Code Contributions By : Tim Thompson twitch!tjt
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* Tony Andrews onecom!wldrdg!tony
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* G. R. (Fred) Walter watmath!grwalter
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*/
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#ifdef __ORCAC__
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#ifndef MAINSEG
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#pragma noroot
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#endif
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#pragma optimize 9
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#endif
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#include "env.h"
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#include <stdio.h>
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#ifndef ATARI
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# ifndef UNIX
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# include <stdlib.h>
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# endif
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#endif
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#include <ctype.h>
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#ifndef MWC
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# include <string.h>
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#endif
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#include "ascii.h"
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#include "keymap.h"
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#include "param.h"
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#include "term.h"
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#include "macros.h"
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#ifdef AMIGA
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/*
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* This is used to disable break signal handling.
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*/
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#include <signal.h>
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#endif
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/*extern char *strchr();*/
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#define NORMAL 0
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#define CMDLINE 1
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#define INSERT 2
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#define REPLACE 3
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#define APPEND 4
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#define UNDO 5
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#define REDO 6
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#define PUT 7
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#define FORWARD 8
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#define BACKWARD 9
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#define VALID 10
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#define NOT_VALID 11
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#define VALID_TO_CURSCHAR 12
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#define UPDATE_CURSOR 13
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#define UPDATE_ALL 14
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/*
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* Boolean type definition and constants
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*/
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typedef int bool_t;
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#ifndef TRUE
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# define FALSE (0)
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# define TRUE (1)
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#endif
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#define SORTOF (2)
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#define YES TRUE
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#define NO FALSE
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#define MAYBE SORTOF
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/*
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* Maximum screen dimensions
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*/
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#define MAX_COLUMNS 140L
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/*
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* Buffer sizes
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*/
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#define CMDBUFFSIZE MAX_COLUMNS /* size of the command processing buffer */
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#define LSIZE 512 /* max. size of a line in the tags file */
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#define IOSIZE (1024+1) /* file i/o and sprintf buffer size */
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#define YANKSIZE 5200 /* yank buffer size */
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#define INSERT_SIZE 5300 /* insert, redo and undo buffer size must be
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* bigger than YANKSIZE */
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#define REDO_UNDO_SIZE 5400 /* redo, undo and (undo an undo) buffer size
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* must be bigger than INSERT_SIZE */
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#define READSIZE 5500 /* read buffer size must be bigger than
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* YANKSIZE and REDO_UNDO_SIZE */
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/*
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* SLOP is the amount of extra space we get for text on a line during editing
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* operations that need more space. This keeps us from calling alloc every
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* time we get a character during insert mode. No extra space is allocated
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* when the file is initially read.
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*/
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#define SLOP 10
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/*
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* LINEINC is the gap we leave between the artificial line numbers. This
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* helps to avoid renumbering all the lines every time a new line is
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* inserted.
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*
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* Since line numbers are stored in longs (32 bits), a LINEINC of 10000
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* lets us have > 200,000 lines and we won't have to renumber very often.
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*/
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#define LINEINC 10000
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#define CHANGED Changed = TRUE
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#define UNCHANGED Changed = FALSE
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#define S_NOT_VALID NumLineSizes = -1
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#define S_LINE_NOT_VALID LineNotValid = TRUE
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#define S_CHECK_TOPCHAR_AND_BOTCHAR CheckTopcharAndBotchar = TRUE
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#define S_MUST_UPDATE_BOTCHAR MustUpdateBotchar = TRUE
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#define S_VALID_TO_CURSCHAR ValidToCurschar = TRUE
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struct line {
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struct line *next; /* next line */
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struct line *prev; /* previous line */
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char *s; /* text for this line */
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int size; /* actual size of space at 's' */
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unsigned long num; /* line "number" */
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};
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#define LINEOF(x) ((x)->linep->num)
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struct lptr {
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struct line *linep; /* line we're referencing */
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int index; /* position within that line */
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};
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typedef struct line LINE;
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typedef struct lptr LPtr;
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struct charinfo {
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char ch_size;
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char *ch_str;
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};
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extern struct charinfo chars[];
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#ifdef AMIGA
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extern int Aux_Device;
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#endif
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extern int State;
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extern int Rows;
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extern int Columns;
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extern int CheckTopcharAndBotchar;
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extern int MustUpdateBotchar;
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extern int ValidToCurschar;
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extern int LineNotValid;
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extern int NumLineSizes;
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extern LINE **LinePointers;
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extern char *LineSizes;
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extern char *Filename;
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extern LPtr *Filemem;
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extern LPtr *Filetop;
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extern LPtr *Fileend;
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extern LPtr *Topchar;
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extern LPtr *Botchar;
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extern LPtr *Curschar;
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extern LPtr *Insstart;
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extern int Cursrow;
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extern int Curscol;
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extern int Cursvcol;
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extern int Curswant;
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extern bool_t set_want_col;
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extern int Prenum;
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extern bool_t Changed;
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extern bool_t RedrawingDisabled;
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extern bool_t UndoInProgress;
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extern char *IObuff;
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extern char *Insbuffptr;
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extern char *Insbuff;
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extern char *Readbuffptr;
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extern char *Readbuff;
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extern char *Redobuffptr;
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extern char *Redobuff;
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extern char *Undobuffptr;
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extern char *Undobuff;
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extern char *UndoUndobuffptr;
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extern char *UndoUndobuff;
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extern char *Yankbuffptr;
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extern char *Yankbuff;
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extern char last_command;
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extern char last_command_char;
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/* alloc.c */
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char *alloc(unsigned size);
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char *strsave(char *);
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void screenalloc(void);
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void filealloc(void);
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void freeall(void);
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LINE *newline(int);
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bool_t canincrease(int);
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/* cmdline.c */
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void readcmdline(char,char *);
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void dotag(char *, bool_t);
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void msg(char *s);
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void emsg(char *);
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void smsg(char *s,...);
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void gotocmdline(bool_t, char);
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void wait_return(void);
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/* dec.c */
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int dec(LPtr *lp);
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/* edit.c */
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void edit(void);
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void insertchar(char);
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void getout(int);
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void scrollup(int);
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void scrolldown(int);
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void beginline(bool_t);
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bool_t oneright(void);
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bool_t oneleft(void);
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bool_t oneup(int);
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bool_t onedown(n);
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/* fileio.c */
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void filemess(char *);
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void renum(void);
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bool_t readfile(char *,LPtr *,bool_t);
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bool_t writeit(char *, LPtr *, LPtr *);
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/* s_io.c */
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void s_cursor_off(void);
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void s_cursor_on(void);
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void s_clear(void);
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void s_refresh(int);
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void NotValidFromCurschar(void);
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void Update_Botchar(void);
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/* help.c */
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bool_t help(void);
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/* inc.c */
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int inc(LPtr *);
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/* linefunc.c */
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LPtr *nextline(LPtr *);
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LPtr *prevline(LPtr *);
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void coladvance(LPtr *,int);
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/* main.c */
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void stuffReadbuff(char *);
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void stuffnumReadbuff(int);
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char vgetc(void);
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char vpeekc(void);
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/* mark.c */
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void setpcmark(void);
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void clrall(void);
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void clrmark(LINE *);
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bool_t setmark(char);
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LPtr *getmark(char);
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/* misccmds.c */
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bool_t OpenForward(int);
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bool_t OpenBackward(int);
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void fileinfo(void);
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void inschar(char);
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void insstr(char *);
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void delline(int);
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bool_t delchar(bool_t, bool_t);
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int cntllines(LPtr *, LPtr *);
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int plines(char *);
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LPtr *gotoline(int);
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/* normal.c */
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void normal(char);
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void ResetBuffers(void);
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void AppendToInsbuff(char *);
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void AppendToRedobuff(char *);
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void AppendNumberToRedobuff(int);
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void AppendToUndobuff(char *);
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void AppendNumberToUndobuff(int);
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void AppendPositionToUndobuff(int,int);
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void AppendToUndoUndobuff(char *);
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void AppendNumberToUndoUndobuff(int);
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void AppendPositionToUndoUndobuff(int,int);
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bool_t linewhite(LPtr *);
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/* mk.c */
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char *mkstr(char);
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char *mkline(int);
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/* param.c */
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void doset(char *,bool_t);
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/* screen.c */
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void cursupdate(int);
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/* search.c */
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void doglob(LPtr *,LPtr *,char *);
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void dosub(LPtr *,LPtr *,char *);
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void searchagain(int);
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bool_t dosearch(int,char *);
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bool_t repsearch(bool_t);
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bool_t searchc(char,int,int);
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bool_t crepsearch(int);
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bool_t findfunc(int);
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LPtr *showmatch(void);
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LPtr *fwd_word(LPtr *,int);
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LPtr *bck_word(LPtr *,int);
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LPtr *end_word(LPtr *,int);
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/* format_l.c */
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char *format_line(char *, int *);
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/*
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* Machine-dependent routines.
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*/
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#ifdef AMIGA
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# include "amiga.h"
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#endif
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#ifdef BSD
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# include "bsd.h"
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#endif
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#ifdef UNIX
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# include "unix.h"
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#endif
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#ifdef TOS
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# include "tos.h"
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#endif
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#ifdef OS2
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# include "os2.h"
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#endif
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#ifdef DOS
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# include "dos.h"
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#endif
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#ifdef GSOS
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# include "gsos.h"
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#endif
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