1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1982-2012 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                  David Korn <dgk@research.att.com>                   *
18 *                                                                      *
19 ***********************************************************************/
20 #pragma prototyped
21 #ifndef SEARCHSIZE
22 /*
23  *  edit.h -  common data structure for vi and emacs edit options
24  *
25  *   David Korn
26  *   AT&T Labs
27  *
28  */
29 
30 #define SEARCHSIZE	80
31 
32 #include	"FEATURE/options"
33 #include        "FEATURE/locale"
34 #if !SHOPT_VSH && !SHOPT_ESH
35 #   define ed_winsize()	(SEARCHSIZE)
36 #else
37 
38 #if !KSHELL
39 #   include	<setjmp.h>
40 #   include	<sig.h>
41 #   include	<ctype.h>
42 #endif /* KSHELL */
43 
44 #include	"FEATURE/setjmp"
45 #include	"terminal.h"
46 
47 #define STRIP		0377
48 #define LOOKAHEAD	80
49 
50 #if SHOPT_MULTIBYTE
51 #   ifndef ESS_MAXCHAR
52 #	include	"national.h"
53 #   endif /* ESS_MAXCHAR */
54     typedef wchar_t genchar;
55 #   define CHARSIZE	(sizeof(wchar_t)<=2?3:sizeof(wchar_t))
56 #else
57     typedef char genchar;
58 #   define CHARSIZE	1
59 #endif /* SHOPT_MULTIBYTE */
60 
61 #define TABSIZE	8
62 #define PRSIZE	256
63 #define MAXLINE	1024		/* longest edit line permitted */
64 
65 typedef struct _edit_pos
66 {
67 	unsigned short line;
68 	unsigned short col;
69 } Edpos_t;
70 
71 #if SHOPT_EDPREDICT
72 typedef struct Histmatch
73 {
74 	struct Histmatch	*next;
75 	int			index;
76 	short			len;
77 	short			count;
78 	char			data[1];
79 } Histmatch_t;
80 #endif /* SHOPT_EDPREDICT */
81 
82 
83 
84 typedef struct edit
85 {
86 	sigjmp_buf e_env;
87 	int	e_intr;
88 	int	e_kill;
89 	int	e_erase;
90 	int	e_werase;
91 	int	e_eof;
92 	int	e_lnext;
93 	int	e_fchar;
94 	int	e_plen;		/* length of prompt string */
95 	char	e_crlf;		/* zero if cannot return to beginning of line */
96 	char	e_nocrnl;	/* don't put a new-line with ^L */
97 	char	e_keytrap;	/* set when in keytrap */
98 	int	e_llimit;	/* line length limit */
99 	int	e_hline;	/* current history line number */
100 	int	e_hloff;	/* line number offset for command */
101 	int	e_hismin;	/* minimum history line number */
102 	int	e_hismax;	/* maximum history line number */
103 	int	e_raw;		/* set when in raw mode or alt mode */
104 	int	e_cur;		/* current line position */
105 	int	e_eol;		/* end-of-line position */
106 	int	e_pcur;		/* current physical line position */
107 	int	e_peol;		/* end of physical line position */
108 	int	e_mode;		/* edit mode */
109 	int	e_lookahead;	/* index in look-ahead buffer */
110 	int	e_repeat;
111 	int	e_saved;
112 	int	e_fcol;		/* first column */
113 	int	e_ucol;		/* column for undo */
114 	int	e_wsize;	/* width of display window */
115 	char	*e_outbase;	/* pointer to start of output buffer */
116 	char	*e_outptr;	/* pointer to position in output buffer */
117 	char	*e_outlast;	/* pointer to end of output buffer */
118 	genchar	*e_inbuf;	/* pointer to input buffer */
119 	char	*e_prompt;	/* pointer to buffer containing the prompt */
120 	genchar	*e_ubuf;	/* pointer to the undo buffer */
121 	genchar	*e_killbuf;	/* pointer to delete buffer */
122 	char	e_search[SEARCHSIZE];	/* search string */
123 	genchar	*e_Ubuf;	/* temporary workspace buffer */
124 	genchar	*e_physbuf;	/* temporary workspace buffer */
125 	int	e_lbuf[LOOKAHEAD];/* pointer to look-ahead buffer */
126 	int	e_fd;		/* file descriptor */
127 	int	e_ttyspeed;	/* line speed, also indicates tty parms are valid */
128 	int	e_tabcount;
129 #ifdef _hdr_utime
130 	ino_t	e_tty_ino;
131 	dev_t	e_tty_dev;
132 	char	*e_tty;
133 #endif
134 #if SHOPT_OLDTERMIO
135 	char	e_echoctl;
136 	char	e_tcgeta;
137 	struct termio e_ott;
138 #endif
139 #if SHOPT_MULTIBYTE
140 	int	e_curchar;
141 	int	e_cursize;
142 #endif
143 	int	*e_globals;	/* global variables */
144 	genchar	*e_window;	/* display window  image */
145 	char	e_inmacro;	/* processing macro expansion */
146 #if KSHELL
147 	char	e_vi_insert[2];	/* for sh_keytrap */
148 	int32_t e_col;		/* for sh_keytrap */
149 #else
150 	char	e_prbuff[PRSIZE]; /* prompt buffer */
151 #endif /* KSHELL */
152 	struct termios	e_ttyparm;      /* initial tty parameters */
153 	struct termios	e_nttyparm;     /* raw tty parameters */
154 	struct termios e_savetty;	/* saved terminal state */
155 	int	e_savefd;	/* file descriptor for saved terminal state */
156 	char	e_macro[4];	/* macro buffer */
157 	void	*e_vi;		/* vi specific data */
158 	void	*e_emacs;	/* emacs specific data */
159 	Shell_t	*sh;		/* interpreter pointer */
160 	char	*e_stkptr;	/* saved stack pointer */
161 	int	e_stkoff;	/* saved stack offset */
162 	char	**e_clist;	/* completion list after <ESC>= */
163 	int	e_nlist;	/* number of elements on completion list */
164 	int	e_multiline;	/* allow multiple lines for editing */
165 	int	e_winsz;	/* columns in window */
166 	Edpos_t	e_curpos;	/* cursor line and column */
167 	Namval_t *e_default;	/* variable containing default value */
168 	Namval_t *e_term;	/* TERM variable */
169 	char 	e_termname[80];	/* terminal name */
170 #if SHOPT_EDPREDICT
171 	Histmatch_t	**hlist;
172 	Histmatch_t	*hfirst;
173 	unsigned short	nhlist;
174 	unsigned short	hoff;
175 	unsigned short	hmax;
176 	char		hpat[40];
177 	char		*hstak;
178 #endif /* SHOPT_EDPREDICT */
179 } Edit_t;
180 
181 #undef MAXWINDOW
182 #define MAXWINDOW	300	/* maximum width window */
183 #define FAST	2
184 #define SLOW	1
185 #define ESC	cntl('[')
186 #define	UEOF	-2			/* user eof char synonym */
187 #define	UINTR	-3			/* user intr char synonym */
188 #define	UERASE	-4			/* user erase char synonym */
189 #define	UKILL	-5			/* user kill char synonym */
190 #define	UWERASE	-6			/* user word erase char synonym */
191 #define	ULNEXT	-7			/* user next literal char synonym */
192 
193 #if ( 'a' == 97) /* ASCII? */
194 #   define	cntl(x)		(x&037)
195 #else
196 #   define cntl(c) (c=='D'?55:(c=='E'?45:(c=='F'?46:(c=='G'?'\a':(c=='H'?'\b': \
197 		(c=='I'?'\t':(c=='J'?'\n':(c=='T'?60:(c=='U'?61:(c=='V'?50: \
198 		(c=='W'?38:(c=='Z'?63:(c=='['?39:(c==']'?29: \
199 		(c<'J'?c+1-'A':(c+10-'J'))))))))))))))))
200 #endif
201 
202 #if !KSHELL
203 #   define STRIP	0377
204 #   define GMACS	1
205 #   define EMACS	2
206 #   define VIRAW	4
207 #   define EDITVI	8
208 #   define NOHIST	16
209 #   define EDITMASK	15
210 #   define is_option(m)	(opt_flag&(m))
211     extern char opt_flag;
212 #   ifdef SYSCALL
213 #	define read(fd,buff,n)	syscall(3,fd,buff,n)
214 #   else
215 #	define read(fd,buff,n)	rEAd(fd,buff,n)
216 #   endif /* SYSCALL */
217 #endif	/* KSHELL */
218 
219 extern void	ed_crlf(Edit_t*);
220 extern void	ed_putchar(Edit_t*, int);
221 extern void	ed_ringbell(void);
222 extern void	ed_setup(Edit_t*,int, int);
223 extern void	ed_flush(Edit_t*);
224 extern int	ed_getchar(Edit_t*,int);
225 extern int	ed_virt_to_phys(Edit_t*,genchar*,genchar*,int,int,int);
226 extern int	ed_window(void);
227 extern void	ed_ungetchar(Edit_t*,int);
228 extern int	ed_viread(void*, int, char*, int, int);
229 extern int	ed_read(void*, int, char*, int, int);
230 extern int	ed_emacsread(void*, int, char*, int, int);
231 extern Edpos_t	ed_curpos(Edit_t*, genchar*, int, int, Edpos_t);
232 extern int	ed_setcursor(Edit_t*, genchar*, int, int, int);
233 #if KSHELL
234 	extern int	ed_macro(Edit_t*,int);
235 	extern int	ed_expand(Edit_t*, char[],int*,int*,int,int);
236 	extern int	ed_fulledit(Edit_t*);
237 	extern void	*ed_open(Shell_t*);
238 #endif /* KSHELL */
239 #   if SHOPT_MULTIBYTE
240 	extern int ed_internal(const char*, genchar*);
241 	extern int ed_external(const genchar*, char*);
242 	extern void ed_gencpy(genchar*,const genchar*);
243 	extern void ed_genncpy(genchar*,const genchar*,int);
244 	extern int ed_genlen(const genchar*);
245 	extern int ed_setwidth(const char*);
246 #  endif /* SHOPT_MULTIBYTE */
247 #if SHOPT_EDPREDICT
248    extern int	ed_histgen(Edit_t*, const char*);
249    extern void	ed_histlist(Edit_t*, int);
250 #endif /* SHOPT_EDPREDICT */
251 
252 extern const char	e_runvi[];
253 #if !KSHELL
254    extern const char	e_version[];
255 #endif /* KSHELL */
256 
257 #if SHOPT_HISTEXPAND
258 
259 /* flags */
260 
261 #define	HIST_EVENT	0x1	/* event designator seen */
262 #define HIST_QUESTION	0x2	/* question mark event designator */
263 #define	HIST_HASH	0x4	/* hash event designator */
264 #define HIST_WORDDSGN	0x8	/* word designator seen */
265 #define HIST_QUICKSUBST	0x10	/* quick substition designator seen */
266 #define HIST_SUBSTITUTE	0x20	/* for substition loop */
267 #define	HIST_NEWLINE	0x40	/* newline in squashed white space */
268 
269 /* modifier flags */
270 
271 #define	HIST_PRINT		0x100	/* print new command */
272 #define	HIST_QUOTE		0x200	/* quote resulting history line */
273 #define	HIST_QUOTE_BR		0x400	/* quote every word on space break */
274 #define	HIST_GLOBALSUBST	0x800	/* apply substition globally */
275 
276 #define	HIST_ERROR		0x1000	/* an error ocurred */
277 
278 /* flags to be returned */
279 
280 #define	HIST_FLAG_RETURN_MASK	(HIST_EVENT|HIST_PRINT|HIST_ERROR)
281 
282 extern int hist_expand(const char *, char **);
283 #endif
284 
285 #endif
286 #endif
287