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Diffstat (limited to 'contrib/nvi/ex/ex.h')
| -rw-r--r-- | contrib/nvi/ex/ex.h | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/contrib/nvi/ex/ex.h b/contrib/nvi/ex/ex.h new file mode 100644 index 0000000..5870990 --- /dev/null +++ b/contrib/nvi/ex/ex.h @@ -0,0 +1,228 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * + * See the LICENSE file for redistribution information. + * + * @(#)ex.h 10.24 (Berkeley) 8/12/96 + */ + +#define PROMPTCHAR ':' /* Prompt using a colon. */ + +typedef struct _excmdlist { /* Ex command table structure. */ + char *name; /* Command name, underlying function. */ + int (*fn) __P((SCR *, EXCMD *)); + +#define E_ADDR1 0x00000001 /* One address. */ +#define E_ADDR2 0x00000002 /* Two addresses. */ +#define E_ADDR2_ALL 0x00000004 /* Zero/two addresses; zero == all. */ +#define E_ADDR2_NONE 0x00000008 /* Zero/two addresses; zero == none. */ +#define E_ADDR_ZERO 0x00000010 /* 0 is a legal addr1. */ +#define E_ADDR_ZERODEF 0x00000020 /* 0 is default addr1 of empty files. */ +#define E_AUTOPRINT 0x00000040 /* Command always sets autoprint. */ +#define E_CLRFLAG 0x00000080 /* Clear the print (#, l, p) flags. */ +#define E_NEWSCREEN 0x00000100 /* Create a new screen. */ +#define E_SECURE 0x00000200 /* Permission denied if O_SECURE set. */ +#define E_VIONLY 0x00000400 /* Meaningful only in vi. */ +#define __INUSE1 0xfffff800 /* Same name space as EX_PRIVATE. */ + u_int16_t flags; + + char *syntax; /* Syntax script. */ + char *usage; /* Usage line. */ + char *help; /* Help line. */ +} EXCMDLIST; + +#define MAXCMDNAMELEN 12 /* Longest command name. */ +extern EXCMDLIST const cmds[]; /* Table of ex commands. */ + +/* + * !!! + * QUOTING NOTE: + * + * Historically, .exrc files and EXINIT variables could only use ^V as an + * escape character, neither ^Q or a user specified character worked. We + * enforce that here, just in case someone depends on it. + */ +#define IS_ESCAPE(sp, cmdp, ch) \ + (F_ISSET(cmdp, E_VLITONLY) ? \ + (ch) == CH_LITERAL : KEY_VAL(sp, ch) == K_VLNEXT) + +/* + * File state must be checked for each command -- any ex command may be entered + * at any time, and most of them won't work well if a file hasn't yet been read + * in. Historic vi generally took the easy way out and dropped core. + */ +#define NEEDFILE(sp, cmdp) { \ + if ((sp)->ep == NULL) { \ + ex_emsg(sp, (cmdp)->cmd->name, EXM_NOFILEYET); \ + return (1); \ + } \ +} + +/* Range structures for global and @ commands. */ +typedef struct _range RANGE; +struct _range { /* Global command range. */ + CIRCLEQ_ENTRY(_range) q; /* Linked list of ranges. */ + recno_t start, stop; /* Start/stop of the range. */ +}; + +/* Ex command structure. */ +struct _excmd { + LIST_ENTRY(_excmd) q; /* Linked list of commands. */ + + char *if_name; /* Associated file. */ + recno_t if_lno; /* Associated line number. */ + + /* Clear the structure for the ex parser. */ +#define CLEAR_EX_PARSER(cmdp) \ + memset(&((cmdp)->cp), 0, ((char *)&(cmdp)->flags - \ + (char *)&((cmdp)->cp)) + sizeof((cmdp)->flags)) + + char *cp; /* Current command text. */ + size_t clen; /* Current command length. */ + + char *save_cmd; /* Remaining command. */ + size_t save_cmdlen; /* Remaining command length. */ + + EXCMDLIST const *cmd; /* Command: entry in command table. */ + EXCMDLIST rcmd; /* Command: table entry/replacement. */ + + CIRCLEQ_HEAD(_rh, _range) rq; /* @/global range: linked list. */ + recno_t range_lno; /* @/global range: set line number. */ + char *o_cp; /* Original @/global command. */ + size_t o_clen; /* Original @/global command length. */ +#define AGV_AT 0x01 /* @ buffer execution. */ +#define AGV_AT_NORANGE 0x02 /* @ buffer execution without range. */ +#define AGV_GLOBAL 0x04 /* global command. */ +#define AGV_V 0x08 /* v command. */ +#define AGV_ALL (AGV_AT | AGV_AT_NORANGE | AGV_GLOBAL | AGV_V) + u_int8_t agv_flags; + + /* Clear the structure before each ex command. */ +#define CLEAR_EX_CMD(cmdp) { \ + u_int32_t L__f = F_ISSET(cmdp, E_PRESERVE); \ + memset(&((cmdp)->buffer), 0, ((char *)&(cmdp)->flags - \ + (char *)&((cmdp)->buffer)) + sizeof((cmdp)->flags)); \ + F_SET(cmdp, L__f); \ +} + + CHAR_T buffer; /* Command: named buffer. */ + recno_t lineno; /* Command: line number. */ + long count; /* Command: signed count. */ + long flagoff; /* Command: signed flag offset. */ + int addrcnt; /* Command: addresses (0, 1 or 2). */ + MARK addr1; /* Command: 1st address. */ + MARK addr2; /* Command: 2nd address. */ + ARGS **argv; /* Command: array of arguments. */ + int argc; /* Command: count of arguments. */ + +#define E_C_BUFFER 0x00001 /* Buffer name specified. */ +#define E_C_CARAT 0x00002 /* ^ flag. */ +#define E_C_COUNT 0x00004 /* Count specified. */ +#define E_C_COUNT_NEG 0x00008 /* Count was signed negative. */ +#define E_C_COUNT_POS 0x00010 /* Count was signed positive. */ +#define E_C_DASH 0x00020 /* - flag. */ +#define E_C_DOT 0x00040 /* . flag. */ +#define E_C_EQUAL 0x00080 /* = flag. */ +#define E_C_FORCE 0x00100 /* ! flag. */ +#define E_C_HASH 0x00200 /* # flag. */ +#define E_C_LIST 0x00400 /* l flag. */ +#define E_C_PLUS 0x00800 /* + flag. */ +#define E_C_PRINT 0x01000 /* p flag. */ + u_int16_t iflags; /* User input information. */ + +#define __INUSE2 0x000004ff /* Same name space as EXCMDLIST. */ +#define E_BLIGNORE 0x00000800 /* Ignore blank lines. */ +#define E_NAMEDISCARD 0x00001000 /* Free/discard the name. */ +#define E_NOAUTO 0x00002000 /* Don't do autoprint output. */ +#define E_NOPRDEF 0x00004000 /* Don't print as default. */ +#define E_NRSEP 0x00008000 /* Need to line adjust ex output. */ +#define E_OPTNUM 0x00010000 /* Number edit option affected. */ +#define E_VLITONLY 0x00020000 /* Use ^V quoting only. */ +#define E_PRESERVE 0x0003f800 /* Bits to preserve across commands. */ + +#define E_ABSMARK 0x00040000 /* Set the absolute mark. */ +#define E_ADDR_DEF 0x00080000 /* Default addresses used. */ +#define E_DELTA 0x00100000 /* Search address with delta. */ +#define E_MODIFY 0x00200000 /* File name expansion modified arg. */ +#define E_MOVETOEND 0x00400000 /* Move to the end of the file first. */ +#define E_NEWLINE 0x00800000 /* Found ending <newline>. */ +#define E_SEARCH_WMSG 0x01000000 /* Display search-wrapped message. */ +#define E_USELASTCMD 0x02000000 /* Use the last command. */ +#define E_VISEARCH 0x04000000 /* It's really a vi search command. */ + u_int32_t flags; /* Current flags. */ +}; + +/* Ex private, per-screen memory. */ +typedef struct _ex_private { + CIRCLEQ_HEAD(_tqh, _tagq) tq; /* Tag queue. */ + TAILQ_HEAD(_tagfh, _tagf) tagfq;/* Tag file list. */ + LIST_HEAD(_csch, _csc) cscq; /* Cscope connection list. */ + char *tag_last; /* Saved last tag string. */ + + CHAR_T *lastbcomm; /* Last bang command. */ + + ARGS **args; /* Command: argument list. */ + int argscnt; /* Command: argument list count. */ + int argsoff; /* Command: offset into arguments. */ + + u_int32_t fdef; /* Saved E_C_* default command flags. */ + + char *ibp; /* File line input buffer. */ + size_t ibp_len; /* File line input buffer length. */ + + /* + * Buffers for the ex output. The screen/vi support doesn't do any + * character buffering of any kind. We do it here so that we're not + * calling the screen output routines on every character. + * + * XXX + * Change to grow dynamically. + */ + char obp[1024]; /* Ex output buffer. */ + size_t obp_len; /* Ex output buffer length. */ + +#define EXP_CSCINIT 0x01 /* Cscope initialized. */ + u_int8_t flags; +} EX_PRIVATE; +#define EXP(sp) ((EX_PRIVATE *)((sp)->ex_private)) + +/* + * Filter actions: + * + * FILTER_BANG !: filter text through the utility. + * FILTER_RBANG !: read from the utility (without stdin). + * FILTER_READ read: read from the utility (with stdin). + * FILTER_WRITE write: write to the utility, display its output. + */ +enum filtertype { FILTER_BANG, FILTER_RBANG, FILTER_READ, FILTER_WRITE }; + +/* Ex common error messages. */ +typedef enum { + EXM_EMPTYBUF, /* Empty buffer. */ + EXM_FILECOUNT, /* Too many file names. */ + EXM_NOCANON, /* No terminal interface. */ + EXM_NOCANON_F, /* EXM_NOCANO: filter version. */ + EXM_NOFILEYET, /* Illegal until a file read in. */ + EXM_NOPREVBUF, /* No previous buffer specified. */ + EXM_NOPREVRE, /* No previous RE specified. */ + EXM_NOSUSPEND, /* No suspension. */ + EXM_SECURE, /* Illegal if secure edit option set. */ + EXM_SECURE_F, /* EXM_SECURE: filter version */ + EXM_USAGE /* Standard usage message. */ +} exm_t; + +/* Ex address error types. */ +enum badaddr { A_COMBO, A_EMPTY, A_EOF, A_NOTSET, A_ZERO }; + +/* Ex common tag error messages. */ +typedef enum { + TAG_BADLNO, /* Tag line doesn't exist. */ + TAG_EMPTY, /* Tags stack is empty. */ + TAG_SEARCH /* Tags search pattern wasn't found. */ +} tagmsg_t; + +#include "ex_def.h" +#include "ex_extern.h" |
