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coherent
/* vi.h */
/* Author:
* Steve Kirkendall
* 16820 SW Tallac Way
* Beaverton, OR 97006
* [email protected], or ...uunet!tektronix!psueea!jove!kirkenda
*/
/* This is the header file for my version of vi. */
#define VERSION "ELVIS 1.4, by Steve Kirkendall"
#define COPYING "This version of ELVIS is freely redistributable."
#include <errno.h>
extern int errno;
#if TOS
#define ENOENT (-AEFILNF)
#endif
#if TOS
# include <types.h>
# define O_RDONLY 0
# define O_WRONLY 1
# define O_RDWR 2
#else
# if OSK
# include <modes.h>
# define O_RDONLY S_IREAD
# define O_WRONLY S_IWRITE
# define O_RDWR (S_IREAD | S_IWRITE)
# define ENOENT E_PNNF
# else
# include <sys/types.h>
# if COHERENT
# include <sys/fcntl.h>
# else
# include <fcntl.h>
# endif
# endif
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#include "curses.h"
/*------------------------------------------------------------------------*/
/* Miscellaneous constants. */
#define INFINITY 2000000001L /* a very large integer */
#define LONGKEY 10 /* longest possible raw :map key */
#ifndef MAXRCLEN
# define MAXRCLEN 1000 /* longest possible .exrc file */
#endif
/*------------------------------------------------------------------------*/
/* These describe how temporary files are divided into blocks */
#define BLKSIZE 1024 /* size of blocks */
#define MAXBLKS (BLKSIZE / sizeof(unsigned short))
typedef union
{
char c[BLKSIZE]; /* for text blocks */
unsigned short n[MAXBLKS]; /* for the header block */
}
BLK;
/*------------------------------------------------------------------------*/
/* These are used manipulate BLK buffers. */
extern BLK hdr; /* buffer for the header block */
extern BLK *blkget(); /* given index into hdr.c[], reads block */
extern BLK *blkadd(); /* inserts a new block into hdr.c[] */
/*------------------------------------------------------------------------*/
/* These are used to keep track of various flags */
extern struct _viflags
{
short file; /* file flags */
}
viflags;
/* file flags */
#define NEWFILE 0x0001 /* the file was just created */
#define READONLY 0x0002 /* the file is read-only */
#define HADNUL 0x0004 /* the file contained NUL characters */
#define MODIFIED 0x0008 /* the file has been modified */
#define NOFILE 0x0010 /* no name is known for the current text */
#define ADDEDNL 0x0020 /* newlines were added to the file */
/* macros used to set/clear/test flags */
#define setflag(x,y) viflags.x |= y
#define clrflag(x,y) viflags.x &= ~y
#define tstflag(x,y) (viflags.x & y)
#define initflags() viflags.file = 0;
/* The options */
extern char o_autoindent[1];
extern char o_autoprint[1];
extern char o_autowrite[1];
#ifndef NO_ERRLIST
extern char o_cc[30];
#endif
#ifndef NO_CHARATTR
extern char o_charattr[1];
#endif
extern char o_columns[3];
extern char o_digraph[1];
extern char o_directory[30];
extern char o_edcompatible[1];
extern char o_errorbells[1];
extern char o_exrefresh[1];
#ifndef NO_DIGRAPH
extern char o_flipcase[80];
#endif
#ifndef NO_SENTENCE
extern char o_hideformat[1];
#endif
extern char o_ignorecase[1];
#ifndef NO_EXTENSIONS
extern char o_inputmode[1];
#endif
extern char o_keytime[3];
extern char o_keywordprg[80];
extern char o_lines[3];
extern char o_list[1];
#ifndef NO_MAGIC
extern char o_magic[1];
#endif
#ifndef NO_ERRLIST
extern char o_make[30];
#endif
#ifndef NO_MODELINE
extern char o_modeline[1];
#endif
#ifndef NO_SENTENCE
extern char o_paragraphs[30];
#endif
#if MSDOS
extern char o_pcbios[1];
#endif
extern char o_readonly[1];
extern char o_report[3];
extern char o_scroll[3];
#ifndef NO_SENTENCE
extern char o_sections[30];
#endif
extern char o_shell[60];
#ifndef NO_SHOWMATCH
extern char o_showmatch[1];
#endif
#ifndef NO_SHOWMODE
extern char o_smd[1];
#endif
extern char o_shiftwidth[3];
extern char o_sidescroll[3];
extern char o_sync[1];
extern char o_tabstop[3];
extern char o_term[30];
extern char o_vbell[1];
extern char o_warn[1];
extern char o_wrapmargin[3];
extern char o_wrapscan[1];
/*------------------------------------------------------------------------*/
/* These help support the single-line multi-change "undo" -- shift-U */
extern char U_text[BLKSIZE];
extern long U_line;
/*------------------------------------------------------------------------*/
/* These are used to refer to places in the text */
typedef long MARK;
#define markline(x) (long)((x) / BLKSIZE)
#define markidx(x) (int)((x) & (BLKSIZE - 1))
#define MARK_UNSET ((MARK)0)
#define MARK_FIRST ((MARK)BLKSIZE)
#define MARK_LAST ((MARK)(nlines * BLKSIZE))
#define MARK_AT_LINE(x) ((MARK)((x) * BLKSIZE))
#define NMARKS 29
extern MARK mark[NMARKS]; /* marks a-z, plus mark ' and two temps */
extern MARK cursor; /* mark where line is */
/*------------------------------------------------------------------------*/
/* These are used to keep track of the current & previous files. */
extern long origtime; /* modification date&time of the current file */
extern char origname[256]; /* name of the current file */
extern char prevorig[256]; /* name of the preceding file */
extern long prevline; /* line number from preceding file */
/*------------------------------------------------------------------------*/
/* misc housekeeping variables & functions */
extern int tmpfd; /* fd used to access the tmp file */
extern long lnum[MAXBLKS]; /* last line# of each block */
extern long nlines; /* number of lines in the file */
extern char args[BLKSIZE]; /* file names given on the command line */
extern int argno; /* the current element of args[] */
extern int nargs; /* number of filenames in args */
extern long changes; /* counts changes, to prohibit short-cuts */
extern int significant; /* boolean: was a *REAL* change made? */
extern int mustredraw; /* boolean: force total redraw of screen? */
extern BLK tmpblk; /* a block used to accumulate changes */
extern long topline; /* file line number of top line */
extern int leftcol; /* column number of left col */
#define botline (topline + LINES - 2)
#define rightcol (leftcol + COLS - 1)
extern int physcol; /* physical column number that cursor is on */
extern int physrow; /* physical row number that cursor is on */
extern int exwrote; /* used to detect verbose ex commands */
extern int doingdot; /* boolean: are we doing the "." command? */
extern int doingglobal; /* boolean: are doing a ":g" command? */
extern long rptlines; /* number of lines affected by a command */
extern char *rptlabel; /* description of how lines were affected */
extern char *fetchline(); /* read a given line from tmp file */
extern char *parseptrn(); /* isolate a regexp in a line */
extern MARK paste(); /* paste from cut buffer to a given point */
extern char *wildcard(); /* expand wildcards in filenames */
extern MARK input(); /* inserts characters from keyboard */
extern char *linespec(); /* finds the end of a /regexp/ string */
#define ctrl(ch) ((ch)&037)
#ifndef NO_RECYCLE
extern long allocate(); /* allocate a free block of the tmp file */
#endif
extern int trapint(); /* trap handler for SIGINT */
extern void blkdirty(); /* marks a block as being "dirty" */
extern void blkflush(); /* writes a single dirty block to the disk */
extern void blksync(); /* forces all "dirty" blocks to disk */
extern void blkinit(); /* resets the block cache to "empty" state */
extern void beep(); /* rings the terminal's bell */
extern void exrefresh(); /* writes text to the screen */
extern void msg(); /* writes a printf-style message to the screen */
extern void reset_msg(); /* resets the "manymsgs" flag */
extern void endmsgs(); /* if "manymsgs" is set, then scroll up 1 line */
extern void garbage(); /* reclaims any garbage blocks */
extern void redraw(); /* updates the screen after a change */
extern void resume_curses();/* puts the terminal in "cbreak" mode */
extern void beforedo(); /* saves current revision before a new change */
extern void afterdo(); /* marks end of a beforedo() change */
extern void abortdo(); /* like "afterdo()" followed by "undo()" */
extern int undo(); /* restores file to previous undo() */
extern void dumpkey(); /* lists key mappings to the screen */
extern void mapkey(); /* defines a new key mapping */
extern void savekeys(); /* lists key mappings to a file */
extern void redrawrange(); /* records clues from modify.c */
extern void cut(); /* saves text in a cut buffer */
extern void delete(); /* deletes text */
extern void add(); /* adds text */
extern void change(); /* deletes text, and then adds other text */
extern void cutswitch(); /* updates cut buffers when we switch files */
extern void do_abbr(); /* defines or lists abbreviations */
extern void do_digraph(); /* defines or lists digraphs */
extern void exstring(); /* execute a string as EX commands */
extern void dumpopts();
extern void setopts();
extern void saveopts();
#ifndef NO_DIGRAPH
extern void savedigs();
#endif
#ifndef NO_ABBR
extern void saveabbr();
#endif
extern void cutname();
extern void cutname();
extern void initopts();
extern void cutend();
/*------------------------------------------------------------------------*/
/* macros that are used as control structures */
#define BeforeAfter(before, after) for((before),bavar=1;bavar;(after),bavar=0)
#define ChangeText BeforeAfter(beforedo(FALSE),afterdo())
extern int bavar; /* used only in BeforeAfter macros */
/*------------------------------------------------------------------------*/
/* These are the movement commands. Each accepts a mark for the starting */
/* location & number and returns a mark for the destination. */
extern MARK m_updnto(); /* k j G */
extern MARK m_right(); /* h */
extern MARK m_left(); /* l */
extern MARK m_tocol(); /* | */
extern MARK m_front(); /* ^ */
extern MARK m_rear(); /* $ */
extern MARK m_fword(); /* w */
extern MARK m_bword(); /* b */
extern MARK m_eword(); /* e */
extern MARK m_fWord(); /* W */
extern MARK m_bWord(); /* B */
extern MARK m_eWord(); /* E */
extern MARK m_fparagraph(); /* } */
extern MARK m_bparagraph(); /* { */
extern MARK m_fsection(); /* ]] */
extern MARK m_bsection(); /* [[ */
extern MARK m_match(); /* % */
#ifndef NO_SENTENCE
extern MARK m_fsentence(); /* ) */
extern MARK m_bsentence(); /* ( */
#endif
extern MARK m_tomark(); /* 'm */
extern MARK m_nsrch(); /* n */
extern MARK m_Nsrch(); /* N */
extern MARK m_fsrch(); /* /regexp */
extern MARK m_bsrch(); /* ?regexp */
#ifndef NO_CHARSEARCH
extern MARK m__ch(); /* ; , */
extern MARK m_fch(); /* f */
extern MARK m_tch(); /* t */
extern MARK m_Fch(); /* F */
extern MARK m_Tch(); /* T */
#endif
extern MARK m_row(); /* H L M */
extern MARK m_z(); /* z */
extern MARK m_scroll(); /* ^B ^F ^E ^Y ^U ^D */
/* Some stuff that is used by movement functions... */
extern MARK adjmove(); /* a helper fn, used by move fns */
/* This macro is used to set the default value of cnt */
#define DEFAULT(val) if (cnt < 1) cnt = (val)
/* These are used to minimize calls to fetchline() */
extern int plen; /* length of the line */
extern long pline; /* line number that len refers to */
extern long pchgs; /* "changes" level that len refers to */
extern char *ptext; /* text of previous line, if valid */
extern void pfetch();
extern char digraph();
/* This is used to build a MARK that corresponds to a specific point in the
* line that was most recently pfetch'ed.
*/
#define buildmark(text) (MARK)(BLKSIZE * pline + (int)((text) - ptext))
/*------------------------------------------------------------------------*/
/* These are used to handle EX commands. */
#define CMD_NULL 0 /* NOT A VALID COMMAND */
#define CMD_ABBR 1 /* "define an abbreviation" */
#define CMD_ARGS 2 /* "show me the args" */
#define CMD_APPEND 3 /* "insert lines after this line" */
#define CMD_AT 4 /* "execute a cut buffer's contents via EX" */
#define CMD_BANG 5 /* "run a single shell command" */
#define CMD_CC 6 /* "run `cc` and then do CMD_ERRLIST" */
#define CMD_CD 7 /* "change directories" */
#define CMD_CHANGE 8 /* "change some lines" */
#define CMD_COPY 9 /* "copy the selected text to a given place" */
#define CMD_DELETE 10 /* "delete the selected text" */
#define CMD_DIGRAPH 11 /* "add a digraph, or display them all" */
#define CMD_EDIT 12 /* "switch to a different file" */
#define CMD_EQUAL 13 /* "display a line number" */
#define CMD_ERRLIST 14 /* "locate the next error in a list" */
#define CMD_FILE 15 /* "show the file's status" */
#define CMD_GLOBAL 16 /* "globally search & do a command" */
#define CMD_INSERT 17 /* "insert lines before the current line" */
#define CMD_JOIN 18 /* "join the selected line & the one after" */
#define CMD_LIST 19 /* "print lines, making control chars visible" */
#define CMD_MAKE 20 /* "run `make` and then do CMD_ERRLIST" */
#define CMD_MAP 21 /* "adjust the keyboard map" */
#define CMD_MARK 22 /* "mark this line" */
#define CMD_MKEXRC 23 /* "make a .exrc file" */
#define CMD_MOVE 24 /* "move the selected text to a given place" */
#define CMD_NEXT 25 /* "switch to next file in args" */
#define CMD_NUMBER 26 /* "print lines from the file w/ line numbers" */
#define CMD_PRESERVE 27 /* "act as though vi crashed" */
#define CMD_PREVIOUS 28 /* "switch to the previous file in args" */
#define CMD_PRINT 29 /* "print the selected text" */
#define CMD_PUT 30 /* "insert any cut lines before this line" */
#define CMD_QUIT 31 /* "quit without writing the file" */
#define CMD_READ 32 /* "append the given file after this line */
#define CMD_RECOVER 33 /* "recover file after vi crashes" - USE -r FLAG */
#define CMD_REWIND 34 /* "rewind to first file" */
#define CMD_SET 35 /* "set a variable's value" */
#define CMD_SHELL 36 /* "run some lines through a command" */
#define CMD_SHIFTL 37 /* "shift lines left" */
#define CMD_SHIFTR 38 /* "shift lines right" */
#define CMD_SOURCE 39 /* "interpret a file's contents as ex commands" */
#define CMD_STOP 40 /* same as CMD_SUSPEND */
#define CMD_SUBAGAIN 41 /* "repeat the previous substitution" */
#define CMD_SUBSTITUTE 42 /* "substitute text in this line" */
#define CMD_SUSPEND 43 /* "suspend the vi session" */
#define CMD_TR 44 /* "transliterate chars in the selected lines" */
#define CMD_TAG 45 /* "go to a particular tag" */
#define CMD_UNABBR 46 /* "remove an abbreviation definition" */
#define CMD_UNDO 47 /* "undo the previous command" */
#define CMD_UNMAP 48 /* "remove a key sequence map */
#define CMD_VERSION 49 /* "describe which version this is" */
#define CMD_VGLOBAL 50 /* "apply a cmd to lines NOT containing an RE" */
#define CMD_VISUAL 51 /* "go into visual mode" */
#define CMD_WQUIT 52 /* "write this file out (any case) & quit" */
#define CMD_WRITE 53 /* "write the selected(?) text to a given file" */
#define CMD_XIT 54 /* "write this file out (if modified) & quit" */
#define CMD_YANK 55 /* "copy the selected text into the cut buffer" */
#ifdef DEBUG
# define CMD_DEBUG 56 /* access to internal data structures */
# define CMD_VALIDATE 57 /* check for internal consistency */
#endif
typedef int CMD;
extern void ex();
extern void vi();
extern void doexcmd();
#ifndef NO_ABBR
extern void cmd_abbr();
#endif
extern void cmd_append();
extern void cmd_args();
#ifndef NO_AT
extern void cmd_at();
#endif
extern void cmd_cd();
extern void cmd_delete();
#ifndef NO_DIGRAPH
extern void cmd_digraph();
#endif
extern void cmd_edit();
#ifndef NO_ERRLIST
extern void cmd_errlist();
#endif
extern void cmd_file();
extern void cmd_global();
extern void cmd_join();
extern void cmd_mark();
#ifndef NO_ERRLIST
extern void cmd_make();
#endif
extern void cmd_map();
#ifndef NO_MKEXRC
extern void cmd_mkexrc();
#endif
extern void cmd_next();
extern void cmd_print();
extern void cmd_put();
extern void cmd_read();
extern void cmd_set();
extern void cmd_shell();
extern void cmd_shift();
extern void cmd_source();
extern void cmd_substitute();
extern void cmd_tag();
extern void cmd_undo();
extern void cmd_version();
extern void cmd_visual();
extern void cmd_write();
extern void cmd_xit();
extern void cmd_move();
#ifdef DEBUG
extern void cmd_debug();
extern void cmd_validate();
#endif
/*----------------------------------------------------------------------*/
/* These are used to handle VI commands */
extern MARK v_1ex(); /* : */
extern MARK v_mark(); /* m */
extern MARK v_quit(); /* Q */
extern MARK v_redraw(); /* ^L ^R */
extern MARK v_ulcase(); /* ~ */
extern MARK v_undo(); /* u */
extern MARK v_xchar(); /* x */
extern MARK v_Xchar(); /* X */
extern MARK v_replace(); /* r */
extern MARK v_overtype(); /* R */
extern MARK v_selcut(); /* " */
extern MARK v_paste(); /* p P */
extern MARK v_yank(); /* y Y */
extern MARK v_delete(); /* d D */
extern MARK v_join(); /* J */
extern MARK v_insert(); /* a A i I o O */
extern MARK v_change(); /* c C */
extern MARK v_subst(); /* s */
extern MARK v_lshift(); /* < */
extern MARK v_rshift(); /* > */
extern MARK v_filter(); /* ! */
extern MARK v_status(); /* ^G */
extern MARK v_switch(); /* ^^ */
extern MARK v_tag(); /* ^] */
extern MARK v_xit(); /* ZZ */
extern MARK v_undoline(); /* U */
extern MARK v_again(); /* & */
#ifndef NO_EXTENSIONS
extern MARK v_keyword(); /* ^K */
extern MARK v_increment(); /* * */
#endif
#ifndef NO_ERRLIST
extern MARK v_errlist(); /* * */
#endif
#ifndef NO_AT
extern MARK v_at(); /* @ */
#endif
/*----------------------------------------------------------------------*/
/* These describe what mode we're in */
#define MODE_EX 1 /* executing ex commands */
#define MODE_VI 2 /* executing vi commands */
#define MODE_COLON 3 /* executing an ex command from vi mode */
#define MODE_QUIT 4
extern int mode;
#define WHEN_VICMD 1 /* getkey: we're reading a VI command */
#define WHEN_VIINP 2 /* getkey: we're in VI's INPUT mode */
#define WHEN_VIREP 4 /* getkey: we're in VI's REPLACE mode */
#define WHEN_EX 8 /* getkey: we're in EX mode */
#define WHEN_MSG 16 /* getkey: we're at a "more" prompt */
#define WHEN_INMV 256 /* in input mode, interpret the key in VICMD mode */
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