597 lines
20 KiB
C
Executable File
597 lines
20 KiB
C
Executable File
/* vi.h */
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/* Author:
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* Steve Kirkendall
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* 14407 SW Teal Blvd. #C
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* Beaverton, OR 97005
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* kirkenda@cs.pdx.edu
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*/
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#define VERSION "ELVIS 1.5, by Steve Kirkendall (23 March 1992)"
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#define COPYING "This version of ELVIS is freely redistributable."
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#include <errno.h>
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extern int errno;
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#if TOS && !defined(__GNUC__)
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#define ENOENT (-AEFILNF)
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#endif
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#if TOS || VMS
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# include <types.h>
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# define O_RDONLY 0
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# define O_WRONLY 1
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# define O_RDWR 2
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# ifdef __GNUC__
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# define S_IJDIR S_IFDIR
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# endif
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#else
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# if OSK
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# include <modes.h>
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# define O_RDONLY S_IREAD
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# define O_WRONLY S_IWRITE
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# define O_RDWR (S_IREAD | S_IWRITE)
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# define ENOENT E_PNNF
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# define sprintf Sprintf
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# else
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# include <sys/types.h>
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# if COHERENT
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# include <sys/fcntl.h>
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# else
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# include <fcntl.h>
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# endif
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# endif
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#endif
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#ifndef O_BINARY
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# define O_BINARY 0
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#endif
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#include "curses.h"
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#include <signal.h>
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/*------------------------------------------------------------------------*/
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/* Miscellaneous constants. */
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#define INFINITY 2000000001L /* a very large integer */
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#define LONGKEY 10 /* longest possible raw :map key */
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#ifndef MAXRCLEN
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# define MAXRCLEN 1000 /* longest possible :@ command */
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#endif
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/*------------------------------------------------------------------------*/
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/* These describe how temporary files are divided into blocks */
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#define MAXBLKS (BLKSIZE / sizeof(unsigned short))
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typedef union
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{
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char c[BLKSIZE]; /* for text blocks */
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unsigned short n[MAXBLKS]; /* for the header block */
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}
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BLK;
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/*------------------------------------------------------------------------*/
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/* These are used manipulate BLK buffers. */
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extern BLK hdr; /* buffer for the header block */
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extern BLK *blkget(); /* given index into hdr.c[], reads block */
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extern BLK *blkadd(); /* inserts a new block into hdr.c[] */
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/*------------------------------------------------------------------------*/
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/* These are used to keep track of various flags */
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extern struct _viflags
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{
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short file; /* file flags */
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}
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viflags;
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/* file flags */
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#define NEWFILE 0x0001 /* the file was just created */
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#define READONLY 0x0002 /* the file is read-only */
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#define HADNUL 0x0004 /* the file contained NUL characters */
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#define MODIFIED 0x0008 /* the file has been modified, but not saved */
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#define NOFILE 0x0010 /* no name is known for the current text */
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#define ADDEDNL 0x0020 /* newlines were added to the file */
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#define HADBS 0x0040 /* backspace chars were lost from the file */
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#define UNDOABLE 0x0080 /* file has been modified */
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#define NOTEDITED 0x0100 /* the :file command has been used */
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/* macros used to set/clear/test flags */
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#define setflag(x,y) viflags.x |= y
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#define clrflag(x,y) viflags.x &= ~y
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#define tstflag(x,y) (viflags.x & y)
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#define initflags() viflags.file = 0;
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/* The options */
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extern char o_autoindent[1];
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extern char o_autoprint[1];
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extern char o_autotab[1];
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extern char o_autowrite[1];
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extern char o_columns[3];
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extern char o_directory[30];
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extern char o_edcompatible[1];
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extern char o_equalprg[80];
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extern char o_errorbells[1];
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extern char o_exrefresh[1];
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extern char o_ignorecase[1];
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extern char o_keytime[3];
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extern char o_keywordprg[80];
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extern char o_lines[3];
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extern char o_list[1];
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extern char o_number[1];
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extern char o_readonly[1];
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extern char o_remap[1];
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extern char o_report[3];
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extern char o_scroll[3];
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extern char o_shell[60];
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extern char o_shiftwidth[3];
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extern char o_sidescroll[3];
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extern char o_sync[1];
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extern char o_tabstop[3];
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extern char o_term[30];
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extern char o_flash[1];
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extern char o_warn[1];
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extern char o_wrapscan[1];
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#ifndef CRUNCH
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extern char o_beautify[1];
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extern char o_exrc[1];
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extern char o_mesg[1];
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extern char o_more[1];
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extern char o_novice[1];
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extern char o_prompt[1];
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extern char o_taglength[3];
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extern char o_terse[1];
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extern char o_window[3];
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extern char o_wrapmargin[3];
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extern char o_writeany[1];
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#endif
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#ifndef NO_ERRLIST
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extern char o_cc[30];
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extern char o_make[30];
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#endif
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#ifndef NO_CHARATTR
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extern char o_charattr[1];
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#endif
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#ifndef NO_DIGRAPH
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extern char o_digraph[1];
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extern char o_flipcase[80];
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#endif
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#ifndef NO_SENTENCE
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extern char o_hideformat[1];
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#endif
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#ifndef NO_EXTENSIONS
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extern char o_inputmode[1];
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extern char o_ruler[1];
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#endif
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#ifndef NO_MAGIC
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extern char o_magic[1];
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#endif
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#ifndef NO_MODELINES
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extern char o_modelines[1];
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#endif
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#ifndef NO_SENTENCE
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extern char o_paragraphs[30];
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extern char o_sections[30];
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#endif
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#if MSDOS
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extern char o_pcbios[1];
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#endif
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#ifndef NO_SHOWMATCH
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extern char o_showmatch[1];
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#endif
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#ifndef NO_SHOWMODE
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extern char o_smd[1];
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#endif
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/*------------------------------------------------------------------------*/
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/* These help support the single-line multi-change "undo" -- shift-U */
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extern char U_text[BLKSIZE];
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extern long U_line;
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/*------------------------------------------------------------------------*/
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/* These are used to refer to places in the text */
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typedef long MARK;
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#define markline(x) (long)((x) / BLKSIZE)
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#define markidx(x) (int)((x) & (BLKSIZE - 1))
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#define MARK_UNSET ((MARK)0)
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#define MARK_FIRST ((MARK)BLKSIZE)
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#define MARK_LAST ((MARK)(nlines * BLKSIZE))
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#define MARK_AT_LINE(x) ((MARK)(x) * BLKSIZE)
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#define NMARKS 29
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extern MARK mark[NMARKS]; /* marks a-z, plus mark ' and two temps */
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extern MARK cursor; /* mark where line is */
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/*------------------------------------------------------------------------*/
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/* These are used to keep track of the current & previous files. */
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extern long origtime; /* modification date&time of the current file */
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extern char origname[256]; /* name of the current file */
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extern char prevorig[256]; /* name of the preceding file */
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extern long prevline; /* line number from preceding file */
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/*------------------------------------------------------------------------*/
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/* misc housekeeping variables & functions */
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extern int tmpfd; /* fd used to access the tmp file */
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extern int tmpnum; /* counter used to generate unique filenames */
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extern long lnum[MAXBLKS]; /* last line# of each block */
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extern long nlines; /* number of lines in the file */
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extern char args[BLKSIZE]; /* file names given on the command line */
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extern int argno; /* the current element of args[] */
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extern int nargs; /* number of filenames in args */
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extern long changes; /* counts changes, to prohibit short-cuts */
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extern int significant; /* boolean: was a *REAL* change made? */
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extern BLK tmpblk; /* a block used to accumulate changes */
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extern long topline; /* file line number of top line */
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extern int leftcol; /* column number of left col */
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#define botline (topline + LINES - 2)
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#define rightcol (leftcol + COLS - (*o_number ? 9 : 1))
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extern int physcol; /* physical column number that cursor is on */
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extern int physrow; /* physical row number that cursor is on */
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extern int exwrote; /* used to detect verbose ex commands */
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extern int doingdot; /* boolean: are we doing the "." command? */
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extern int doingglobal; /* boolean: are doing a ":g" command? */
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extern long rptlines; /* number of lines affected by a command */
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extern char *rptlabel; /* description of how lines were affected */
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extern char *fetchline(); /* read a given line from tmp file */
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extern char *parseptrn(); /* isolate a regexp in a line */
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extern MARK paste(); /* paste from cut buffer to a given point */
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extern char *wildcard(); /* expand wildcards in filenames */
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extern MARK input(); /* inserts characters from keyboard */
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extern char *linespec(); /* finds the end of a /regexp/ string */
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#define ctrl(ch) ((ch)&037)
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#ifndef NO_RECYCLE
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extern long allocate(); /* allocate a free block of the tmp file */
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#endif
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extern int trapint(); /* trap handler for SIGINT */
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extern int deathtrap(); /* trap handler for deadly signals */
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extern void blkdirty(); /* marks a block as being "dirty" */
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extern void blkflush(); /* writes a single dirty block to the disk */
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extern void blksync(); /* forces all "dirty" blocks to disk */
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extern void blkinit(); /* resets the block cache to "empty" state */
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extern void beep(); /* rings the terminal's bell */
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extern void exrefresh(); /* writes text to the screen */
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extern void msg(); /* writes a printf-style message to the screen */
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extern void endmsgs(); /* if "manymsgs" is set, then scroll up 1 line */
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extern void garbage(); /* reclaims any garbage blocks */
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extern void redraw(); /* updates the screen after a change */
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extern void resume_curses();/* puts the terminal in "cbreak" mode */
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extern void beforedo(); /* saves current revision before a new change */
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extern void afterdo(); /* marks end of a beforedo() change */
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extern void abortdo(); /* like "afterdo()" followed by "undo()" */
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extern int undo(); /* restores file to previous undo() */
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extern void dumpkey(); /* lists key mappings to the screen */
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extern void mapkey(); /* defines a new key mapping */
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extern void savekeys(); /* lists key mappings to a file */
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extern void redrawrange(); /* records clues from modify.c */
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extern void cut(); /* saves text in a cut buffer */
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extern void delete(); /* deletes text */
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extern void add(); /* adds text */
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extern void change(); /* deletes text, and then adds other text */
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extern void cutswitch(); /* updates cut buffers when we switch files */
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extern void do_abbr(); /* defines or lists abbreviations */
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extern void do_digraph(); /* defines or lists digraphs */
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extern void exstring(); /* execute a string as EX commands */
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extern void dumpopts();
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extern void setopts();
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extern void saveopts();
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extern void savedigs();
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extern void saveabbr();
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extern void savecolor();
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extern void cutname();
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extern void cutname();
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extern void initopts();
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extern void cutend();
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#ifndef CRUNCH
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extern int wset; /* boolean: has the "window" size been set? */
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#endif
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/*------------------------------------------------------------------------*/
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/* macros that are used as control structures */
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#define BeforeAfter(before, after) for((before),bavar=1;bavar;(after),bavar=0)
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#define ChangeText BeforeAfter(beforedo(FALSE),afterdo())
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extern int bavar; /* used only in BeforeAfter macros */
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/*------------------------------------------------------------------------*/
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/* These are the movement commands. Each accepts a mark for the starting */
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/* location & number and returns a mark for the destination. */
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extern MARK m_updnto(); /* k j G */
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extern MARK m_right(); /* h */
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extern MARK m_left(); /* l */
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extern MARK m_tocol(); /* | */
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extern MARK m_front(); /* ^ */
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extern MARK m_rear(); /* $ */
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extern MARK m_fword(); /* w */
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extern MARK m_bword(); /* b */
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extern MARK m_eword(); /* e */
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extern MARK m_paragraph(); /* { } [[ ]] */
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extern MARK m_match(); /* % */
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#ifndef NO_SENTENCE
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extern MARK m_sentence(); /* ( ) */
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#endif
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extern MARK m_tomark(); /* 'm */
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#ifndef NO_EXTENSIONS
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extern MARK m_wsrch(); /* ^A */
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#endif
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extern MARK m_nsrch(); /* n */
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extern MARK m_Nsrch(); /* N */
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extern MARK m_fsrch(); /* /regexp */
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extern MARK m_bsrch(); /* ?regexp */
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#ifndef NO_CHARSEARCH
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extern MARK m__ch(); /* ; , */
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extern MARK m_fch(); /* f */
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extern MARK m_tch(); /* t */
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extern MARK m_Fch(); /* F */
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extern MARK m_Tch(); /* T */
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#endif
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extern MARK m_row(); /* H L M */
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extern MARK m_z(); /* z */
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extern MARK m_scroll(); /* ^B ^F ^E ^Y ^U ^D */
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/* Some stuff that is used by movement functions... */
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extern MARK adjmove(); /* a helper fn, used by move fns */
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/* This macro is used to set the default value of cnt */
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#define DEFAULT(val) if (cnt < 1) cnt = (val)
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/* These are used to minimize calls to fetchline() */
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extern int plen; /* length of the line */
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extern long pline; /* line number that len refers to */
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extern long pchgs; /* "changes" level that len refers to */
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extern char *ptext; /* text of previous line, if valid */
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extern void pfetch();
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extern char digraph();
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/* This is used to build a MARK that corresponds to a specific point in the
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* line that was most recently pfetch'ed.
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*/
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#define buildmark(text) (MARK)(BLKSIZE * pline + (int)((text) - ptext))
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/*------------------------------------------------------------------------*/
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/* These are used to handle EX commands. */
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#define CMD_NULL 0 /* NOT A VALID COMMAND */
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#define CMD_ABBR 1 /* "define an abbreviation" */
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#define CMD_ARGS 2 /* "show me the args" */
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#define CMD_APPEND 3 /* "insert lines after this line" */
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#define CMD_AT 4 /* "execute a cut buffer's contents via EX" */
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#define CMD_BANG 5 /* "run a single shell command" */
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#define CMD_CC 6 /* "run `cc` and then do CMD_ERRLIST" */
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#define CMD_CD 7 /* "change directories" */
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#define CMD_CHANGE 8 /* "change some lines" */
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#define CMD_COLOR 9 /* "change the default colors" */
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#define CMD_COPY 10 /* "copy the selected text to a given place" */
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#define CMD_DELETE 11 /* "delete the selected text" */
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#define CMD_DIGRAPH 12 /* "add a digraph, or display them all" */
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#define CMD_EDIT 13 /* "switch to a different file" */
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#define CMD_EQUAL 14 /* "display a line number" */
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#define CMD_ERRLIST 15 /* "locate the next error in a list" */
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#define CMD_FILE 16 /* "show the file's status" */
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#define CMD_GLOBAL 17 /* "globally search & do a command" */
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#define CMD_INSERT 18 /* "insert lines before the current line" */
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#define CMD_JOIN 19 /* "join the selected line & the one after" */
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#define CMD_LIST 20 /* "print lines, making control chars visible" */
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#define CMD_MAKE 21 /* "run `make` and then do CMD_ERRLIST" */
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#define CMD_MAP 22 /* "adjust the keyboard map" */
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#define CMD_MARK 23 /* "mark this line" */
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#define CMD_MKEXRC 24 /* "make a .exrc file" */
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#define CMD_MOVE 25 /* "move the selected text to a given place" */
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#define CMD_NEXT 26 /* "switch to next file in args" */
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#define CMD_NUMBER 27 /* "print lines from the file w/ line numbers" */
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#define CMD_PRESERVE 28 /* "act as though vi crashed" */
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#define CMD_PREVIOUS 29 /* "switch to the previous file in args" */
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#define CMD_PRINT 30 /* "print the selected text" */
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#define CMD_PUT 31 /* "insert any cut lines before this line" */
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#define CMD_QUIT 32 /* "quit without writing the file" */
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#define CMD_READ 33 /* "append the given file after this line */
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#define CMD_RECOVER 34 /* "recover file after vi crashes" - USE -r FLAG */
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#define CMD_REWIND 35 /* "rewind to first file" */
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#define CMD_SET 36 /* "set a variable's value" */
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#define CMD_SHELL 37 /* "run some lines through a command" */
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#define CMD_SHIFTL 38 /* "shift lines left" */
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#define CMD_SHIFTR 39 /* "shift lines right" */
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#define CMD_SOURCE 40 /* "interpret a file's contents as ex commands" */
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#define CMD_STOP 41 /* same as CMD_SUSPEND */
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#define CMD_SUBAGAIN 42 /* "repeat the previous substitution" */
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#define CMD_SUBSTITUTE 43 /* "substitute text in this line" */
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#define CMD_SUSPEND 44 /* "suspend the vi session" */
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#define CMD_TR 45 /* "transliterate chars in the selected lines" */
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#define CMD_TAG 46 /* "go to a particular tag" */
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#define CMD_UNABBR 47 /* "remove an abbreviation definition" */
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#define CMD_UNDO 48 /* "undo the previous command" */
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#define CMD_UNMAP 49 /* "remove a key sequence map */
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#define CMD_VERSION 50 /* "describe which version this is" */
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#define CMD_VGLOBAL 51 /* "apply a cmd to lines NOT containing an RE" */
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#define CMD_VISUAL 52 /* "go into visual mode" */
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#define CMD_WQUIT 53 /* "write this file out (any case) & quit" */
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#define CMD_WRITE 54 /* "write the selected(?) text to a given file" */
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#define CMD_XIT 55 /* "write this file out (if modified) & quit" */
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#define CMD_YANK 56 /* "copy the selected text into the cut buffer" */
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#ifdef DEBUG
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# define CMD_DEBUG 57 /* access to internal data structures */
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# define CMD_VALIDATE 58 /* check for internal consistency */
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#endif
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typedef int CMD;
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extern void ex();
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extern void vi();
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extern void doexcmd();
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extern void cmd_append();
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extern void cmd_args();
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#ifndef NO_AT
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extern void cmd_at();
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#endif
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extern void cmd_cd();
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#ifndef NO_COLOR
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extern void cmd_color();
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#endif
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extern void cmd_delete();
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#ifndef NO_DIGRAPH
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extern void cmd_digraph();
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#endif
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extern void cmd_edit();
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#ifndef NO_ERRLIST
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extern void cmd_errlist();
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#endif
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extern void cmd_file();
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extern void cmd_global();
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extern void cmd_join();
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extern void cmd_mark();
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#ifndef NO_ERRLIST
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extern void cmd_make();
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#endif
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extern void cmd_map();
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#ifndef NO_MKEXRC
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extern void cmd_mkexrc();
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#endif
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extern void cmd_next();
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extern void cmd_print();
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extern void cmd_put();
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extern void cmd_read();
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extern void cmd_set();
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extern void cmd_shell();
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extern void cmd_shift();
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extern void cmd_source();
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extern void cmd_substitute();
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extern void cmd_tag();
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extern void cmd_undo();
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extern void cmd_version();
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extern void cmd_write();
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extern void cmd_xit();
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extern void cmd_move();
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#ifdef DEBUG
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extern void cmd_debug();
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extern void cmd_validate();
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#endif
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#ifdef SIGTSTP
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extern void cmd_suspend();
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#endif
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/*----------------------------------------------------------------------*/
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/* These are used to handle VI commands */
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extern MARK v_1ex(); /* : */
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extern MARK v_mark(); /* m */
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extern MARK v_quit(); /* Q */
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extern MARK v_redraw(); /* ^L ^R */
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extern MARK v_ulcase(); /* ~ */
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extern MARK v_undo(); /* u */
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extern MARK v_xchar(); /* x X */
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extern MARK v_replace(); /* r */
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extern MARK v_overtype(); /* R */
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extern MARK v_selcut(); /* " */
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extern MARK v_paste(); /* p P */
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extern MARK v_yank(); /* y Y */
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extern MARK v_delete(); /* d D */
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extern MARK v_join(); /* J */
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extern MARK v_insert(); /* a A i I o O */
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extern MARK v_change(); /* c C */
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extern MARK v_subst(); /* s */
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extern MARK v_lshift(); /* < */
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extern MARK v_rshift(); /* > */
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extern MARK v_reformat(); /* = */
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extern MARK v_filter(); /* ! */
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extern MARK v_status(); /* ^G */
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extern MARK v_switch(); /* ^^ */
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extern MARK v_tag(); /* ^] */
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extern MARK v_xit(); /* ZZ */
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extern MARK v_undoline(); /* U */
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extern MARK v_again(); /* & */
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#ifndef NO_EXTENSIONS
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extern MARK v_keyword(); /* K */
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extern MARK v_increment(); /* * */
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#endif
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#ifndef NO_ERRLIST
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extern MARK v_errlist(); /* * */
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#endif
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#ifndef NO_AT
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extern MARK v_at(); /* @ */
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#endif
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#ifdef SIGTSTP
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extern MARK v_suspend(); /* ^Z */
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#endif
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#ifndef NO_POPUP
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extern MARK v_popup(); /* \ */
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#endif
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/*----------------------------------------------------------------------*/
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/* These flags describe the quirks of the individual visual commands */
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#define NO_FLAGS 0x00
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#define MVMT 0x01 /* this is a movement command */
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#define PTMV 0x02 /* this can be *part* of a movement command */
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#define FRNT 0x04 /* after move, go to front of line */
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#define INCL 0x08 /* include last char when used with c/d/y */
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#define LNMD 0x10 /* use line mode of c/d/y */
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#define NCOL 0x20 /* this command can't change the column# */
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#define NREL 0x40 /* this is "non-relative" -- set the '' mark */
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#define SDOT 0x80 /* set the "dot" variables, for the "." cmd */
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#ifndef NO_VISIBLE
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# define VIZ 0x100 /* commands which can be used with 'v' */
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#else
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# define VIZ 0
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#endif
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/* This variable is zeroed before a command executes, and later ORed with the
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* command's flags after the command has been executed. It is used to force
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* certain flags to be TRUE for *some* invocations of a particular command.
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* For example, "/regexp/+offset" forces the LNMD flag, and sometimes a "p"
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* or "P" command will force FRNT.
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*/
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extern int force_flags;
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/*----------------------------------------------------------------------*/
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/* These describe what mode we're in */
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#define MODE_EX 1 /* executing ex commands */
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#define MODE_VI 2 /* executing vi commands */
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#define MODE_COLON 3 /* executing an ex command from vi mode */
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#define MODE_QUIT 4
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extern int mode;
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#define WHEN_VICMD 1 /* getkey: we're reading a VI command */
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#define WHEN_VIINP 2 /* getkey: we're in VI's INPUT mode */
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#define WHEN_VIREP 4 /* getkey: we're in VI's REPLACE mode */
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#define WHEN_EX 8 /* getkey: we're in EX mode */
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#define WHEN_MSG 16 /* getkey: we're at a "more" prompt */
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#define WHEN_POPUP 32 /* getkey: we're in the pop-up menu */
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#define WHEN_REP1 64 /* getkey: we're getting a single char for 'r' */
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#define WHEN_CUT 128 /* getkey: we're getting a cut buffer name */
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#define WHEN_MARK 256 /* getkey: we're getting a mark name */
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#define WHEN_CHAR 512 /* getkey: we're getting a destination for f/F/t/T */
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#define WHEN_INMV 4096 /* in input mode, interpret the key in VICMD mode */
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#define WHEN_FREE 8192 /* free the keymap after doing it once */
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#define WHENMASK (WHEN_VICMD|WHEN_VIINP|WHEN_VIREP|WHEN_REP1|WHEN_CUT|WHEN_MARK|WHEN_CHAR)
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#ifndef NO_VISIBLE
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extern MARK V_from;
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extern int V_linemd;
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extern MARK v_start();
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#endif
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#ifdef DEBUG
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# define malloc(size) dbmalloc(size, __FILE__, __LINE__)
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# define free(ptr) dbfree(ptr, __FILE__, __LINE__)
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extern char *dbmalloc();
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#endif
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