755cc40c21
This version incorporates many fixes in particular a fix for vi -w Another approach was proposed to merge those fixes (see review), I find it easier to track changes if we keep importing snapshot on regular basis PR: 241985 Reported by: fernape Differential Revision: https://reviews.freebsd.org/D26158
232 lines
8.6 KiB
C
232 lines
8.6 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#define PROMPTCHAR ':' /* Prompt using a colon. */
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typedef struct _excmdlist { /* Ex command table structure. */
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CHAR_T *name; /* Command name, underlying function. */
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int (*fn)(SCR *, EXCMD *);
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#define E_ADDR1 0x00000001 /* One address. */
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#define E_ADDR2 0x00000002 /* Two addresses. */
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#define E_ADDR2_ALL 0x00000004 /* Zero/two addresses; zero == all. */
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#define E_ADDR2_NONE 0x00000008 /* Zero/two addresses; zero == none. */
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#define E_ADDR_ZERO 0x00000010 /* 0 is a legal addr1. */
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#define E_ADDR_ZERODEF 0x00000020 /* 0 is default addr1 of empty files. */
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#define E_AUTOPRINT 0x00000040 /* Command always sets autoprint. */
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#define E_CLRFLAG 0x00000080 /* Clear the print (#, l, p) flags. */
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#define E_NEWSCREEN 0x00000100 /* Create a new screen. */
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#define E_SECURE 0x00000200 /* Permission denied if O_SECURE set. */
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#define E_VIONLY 0x00000400 /* Meaningful only in vi. */
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#define __INUSE1 0xfffff800 /* Same name space as EX_PRIVATE. */
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u_int16_t flags;
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char *syntax; /* Syntax script. */
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char *usage; /* Usage line. */
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char *help; /* Help line. */
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} EXCMDLIST;
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#define MAXCMDNAMELEN 12 /* Longest command name. */
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extern EXCMDLIST const cmds[]; /* Table of ex commands. */
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/*
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* !!!
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* QUOTING NOTE:
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*
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* Historically, .exrc files and EXINIT variables could only use ^V as an
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* escape character, neither ^Q or a user specified character worked. We
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* enforce that here, just in case someone depends on it.
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*/
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#define IS_ESCAPE(sp, cmdp, ch) \
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(F_ISSET(cmdp, E_VLITONLY) ? \
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(ch) == CH_LITERAL : KEY_VAL(sp, ch) == K_VLNEXT)
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#define IS_SHELLMETA(sp, ch) \
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((ch) <= CHAR_MAX && strchr(O_STR(sp, O_SHELLMETA), ch) != NULL)
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/*
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* File state must be checked for each command -- any ex command may be entered
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* at any time, and most of them won't work well if a file hasn't yet been read
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* in. Historic vi generally took the easy way out and dropped core.
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*/
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#define NEEDFILE(sp, cmdp) do { \
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if ((sp)->ep == NULL) { \
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ex_wemsg(sp, (cmdp)->cmd->name, EXM_NOFILEYET); \
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return (1); \
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} \
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} while (0)
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/* Range structures for global and @ commands. */
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typedef struct _range RANGE;
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struct _range { /* Global command range. */
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TAILQ_ENTRY(_range) q; /* Linked list of ranges. */
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recno_t start, stop; /* Start/stop of the range. */
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};
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/* Ex command structure. */
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struct _excmd {
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SLIST_ENTRY(_excmd) q; /* Linked list of commands. */
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char *if_name; /* Associated file. */
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recno_t if_lno; /* Associated line number. */
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/* Clear the structure for the ex parser. */
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#define CLEAR_EX_PARSER(cmdp) \
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memset(&((cmdp)->cp), 0, ((char *)&(cmdp)->flags - \
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(char *)&((cmdp)->cp)) + sizeof((cmdp)->flags))
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CHAR_T *cp; /* Current command text. */
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size_t clen; /* Current command length. */
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CHAR_T *save_cmd; /* Remaining command. */
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size_t save_cmdlen; /* Remaining command length. */
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EXCMDLIST const *cmd; /* Command: entry in command table. */
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EXCMDLIST rcmd; /* Command: table entry/replacement. */
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TAILQ_HEAD(_rh, _range) rq[1]; /* @/global range: linked list. */
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recno_t range_lno; /* @/global range: set line number. */
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CHAR_T *o_cp; /* Original @/global command. */
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size_t o_clen; /* Original @/global command length. */
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#define AGV_AT 0x01 /* @ buffer execution. */
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#define AGV_AT_NORANGE 0x02 /* @ buffer execution without range. */
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#define AGV_GLOBAL 0x04 /* global command. */
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#define AGV_V 0x08 /* v command. */
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#define AGV_ALL (AGV_AT | AGV_AT_NORANGE | AGV_GLOBAL | AGV_V)
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u_int8_t agv_flags;
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/* Clear the structure before each ex command. */
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#define CLEAR_EX_CMD(cmdp) do { \
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u_int32_t L__f = F_ISSET(cmdp, E_PRESERVE); \
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memset(&((cmdp)->buffer), 0, ((char *)&(cmdp)->flags - \
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(char *)&((cmdp)->buffer)) + sizeof((cmdp)->flags)); \
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F_SET(cmdp, L__f); \
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} while (0)
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CHAR_T buffer; /* Command: named buffer. */
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recno_t lineno; /* Command: line number. */
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long count; /* Command: signed count. */
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long flagoff; /* Command: signed flag offset. */
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int addrcnt; /* Command: addresses (0, 1 or 2). */
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MARK addr1; /* Command: 1st address. */
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MARK addr2; /* Command: 2nd address. */
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ARGS **argv; /* Command: array of arguments. */
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int argc; /* Command: count of arguments. */
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#define E_C_BUFFER 0x00001 /* Buffer name specified. */
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#define E_C_CARAT 0x00002 /* ^ flag. */
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#define E_C_COUNT 0x00004 /* Count specified. */
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#define E_C_COUNT_NEG 0x00008 /* Count was signed negative. */
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#define E_C_COUNT_POS 0x00010 /* Count was signed positive. */
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#define E_C_DASH 0x00020 /* - flag. */
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#define E_C_DOT 0x00040 /* . flag. */
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#define E_C_EQUAL 0x00080 /* = flag. */
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#define E_C_FORCE 0x00100 /* ! flag. */
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#define E_C_HASH 0x00200 /* # flag. */
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#define E_C_LIST 0x00400 /* l flag. */
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#define E_C_PLUS 0x00800 /* + flag. */
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#define E_C_PRINT 0x01000 /* p flag. */
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u_int16_t iflags; /* User input information. */
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#define __INUSE2 0x000007ff /* Same name space as EXCMDLIST. */
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#define E_BLIGNORE 0x00000800 /* Ignore blank lines. */
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#define E_NAMEDISCARD 0x00001000 /* Free/discard the name. */
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#define E_NOAUTO 0x00002000 /* Don't do autoprint output. */
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#define E_NOPRDEF 0x00004000 /* Don't print as default. */
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#define E_NRSEP 0x00008000 /* Need to line adjust ex output. */
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#define E_OPTNUM 0x00010000 /* Number edit option affected. */
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#define E_VLITONLY 0x00020000 /* Use ^V quoting only. */
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#define E_PRESERVE 0x0003f800 /* Bits to preserve across commands. */
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#define E_ABSMARK 0x00040000 /* Set the absolute mark. */
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#define E_ADDR_DEF 0x00080000 /* Default addresses used. */
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#define E_DELTA 0x00100000 /* Search address with delta. */
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#define E_MODIFY 0x00200000 /* File name expansion modified arg. */
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#define E_MOVETOEND 0x00400000 /* Move to the end of the file first. */
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#define E_NEWLINE 0x00800000 /* Found ending <newline>. */
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#define E_SEARCH_WMSG 0x01000000 /* Display search-wrapped message. */
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#define E_USELASTCMD 0x02000000 /* Use the last command. */
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#define E_VISEARCH 0x04000000 /* It's really a vi search command. */
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u_int32_t flags; /* Current flags. */
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};
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/* Ex private, per-screen memory. */
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typedef struct _ex_private {
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/* Tag file list. */
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TAILQ_HEAD(_tagfh, _tagf) tagfq[1];
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TAILQ_HEAD(_tqh, _tagq) tq[1]; /* Tag queue. */
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SLIST_HEAD(_csch, _csc) cscq[1];/* Cscope connection list. */
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CHAR_T *tag_last; /* Saved last tag string. */
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CHAR_T *lastbcomm; /* Last bang command. */
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ARGS **args; /* Command: argument list. */
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int argscnt; /* Command: argument list count. */
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int argsoff; /* Command: offset into arguments. */
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u_int32_t fdef; /* Saved E_C_* default command flags. */
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char *ibp; /* File line input buffer. */
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size_t ibp_len; /* File line input buffer length. */
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CONVWIN ibcw; /* File line input conversion buffer. */
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/*
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* Buffers for the ex output. The screen/vi support doesn't do any
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* character buffering of any kind. We do it here so that we're not
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* calling the screen output routines on every character.
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*
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* XXX
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* Change to grow dynamically.
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*/
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char obp[1024]; /* Ex output buffer. */
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size_t obp_len; /* Ex output buffer length. */
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#define EXP_CSCINIT 0x01 /* Cscope initialized. */
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u_int8_t flags;
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} EX_PRIVATE;
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#define EXP(sp) ((EX_PRIVATE *)((sp)->ex_private))
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/*
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* Filter actions:
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*
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* FILTER_BANG !: filter text through the utility.
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* FILTER_RBANG !: read from the utility (without stdin).
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* FILTER_READ read: read from the utility (with stdin).
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* FILTER_WRITE write: write to the utility, display its output.
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*/
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enum filtertype { FILTER_BANG, FILTER_RBANG, FILTER_READ, FILTER_WRITE };
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/* Ex common error messages. */
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typedef enum {
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EXM_EMPTYBUF, /* Empty buffer. */
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EXM_FILECOUNT, /* Too many file names. */
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EXM_NOCANON, /* No terminal interface. */
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EXM_NOCANON_F, /* EXM_NOCANO: filter version. */
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EXM_NOFILEYET, /* Illegal until a file read in. */
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EXM_NOPREVBUF, /* No previous buffer specified. */
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EXM_NOPREVRE, /* No previous RE specified. */
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EXM_NOSUSPEND, /* No suspension. */
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EXM_SECURE, /* Illegal if secure edit option set. */
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EXM_SECURE_F, /* EXM_SECURE: filter version */
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EXM_USAGE /* Standard usage message. */
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} exm_t;
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/* Ex address error types. */
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enum badaddr { A_COMBO, A_EMPTY, A_EOF, A_NOTSET, A_ZERO };
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/* Ex common tag error messages. */
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typedef enum {
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TAG_BADLNO, /* Tag line doesn't exist. */
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TAG_EMPTY, /* Tags stack is empty. */
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TAG_SEARCH /* Tags search pattern wasn't found. */
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} tagmsg_t;
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#include "ex_def.h"
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#include "extern.h"
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