f0957ccae4
This is the gsoc-2011 project to clean up and backport multibyte support from other nvi forks in a form we can use. USE_WIDECHAR is on unless building for the rescue crunchgen. This should allow editing in the native locale encoding. USE_ICONV depends on make.conf having 'WITH_ICONV=YES' for now. This adds the ability to do things like edit a KOI8-R file while having $LANG set to (say) en_US.UTF-8. iconv is used to transcode the characters for display. Other points: * It uses gencat and catopen/etc instead of homegrown msg catalog stuff. * A lot of stuff has been trimmed out, eg: the perl and tcl bindings which we could never use in base anyway. * It uses ncursesw when in widechar mode. This could be interesting. GSoC info: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2011/zy/1 Repo at: https://github.com/lichray/nvi2 Obtained from: Zhihao Yuan <lichray@gmail.com>
212 lines
8.3 KiB
C
212 lines
8.3 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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* $Id: screen.h,v 10.26 2011/12/12 22:31:36 zy Exp $
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*/
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/*
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* There are minimum values that vi has to have to display a screen. The row
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* minimum is fixed at 1 (the svi code can share a line between the text line
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* and the colon command/message line). Column calculation is a lot trickier.
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* For example, you have to have enough columns to display the line number,
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* not to mention guaranteeing that tabstop and shiftwidth values are smaller
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* than the current column value. It's simpler to have a fixed value and not
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* worry about it.
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*
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* XXX
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* MINIMUM_SCREEN_COLS is almost certainly wrong.
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*/
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#define MINIMUM_SCREEN_ROWS 1
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#define MINIMUM_SCREEN_COLS 20
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/*
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* SCR --
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* The screen structure. To the extent possible, all screen information
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* is stored in the various private areas. The only information here
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* is used by global routines or is shared by too many screens.
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*/
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struct _scr {
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/* INITIALIZED AT SCREEN CREATE. */
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TAILQ_ENTRY(_scr) q; /* Screens. */
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int id; /* Screen id #. */
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int refcnt; /* Reference count. */
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GS *gp; /* Pointer to global area. */
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SCR *nextdisp; /* Next display screen. */
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SCR *ccl_parent; /* Colon command-line parent screen. */
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EXF *ep; /* Screen's current EXF structure. */
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FREF *frp; /* FREF being edited. */
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char **argv; /* NULL terminated file name array. */
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char **cargv; /* Current file name. */
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u_long ccnt; /* Command count. */
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u_long q_ccnt; /* Quit or ZZ command count. */
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/* Screen's: */
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size_t rows; /* 1-N: number of rows. */
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size_t cols; /* 1-N: number of columns. */
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size_t t_rows; /* 1-N: cur number of text rows. */
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size_t t_maxrows; /* 1-N: max number of text rows. */
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size_t t_minrows; /* 1-N: min number of text rows. */
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size_t coff; /* 0-N: screen col offset in display. */
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size_t roff; /* 0-N: screen row offset in display. */
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/* Cursor's: */
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recno_t lno; /* 1-N: file line. */
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size_t cno; /* 0-N: file character in line. */
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size_t rcm; /* Vi: 0-N: Most attractive column. */
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#define L_ADDED 0 /* Added lines. */
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#define L_CHANGED 1 /* Changed lines. */
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#define L_DELETED 2 /* Deleted lines. */
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#define L_JOINED 3 /* Joined lines. */
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#define L_MOVED 4 /* Moved lines. */
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#define L_SHIFT 5 /* Shift lines. */
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#define L_YANKED 6 /* Yanked lines. */
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recno_t rptlchange; /* Ex/vi: last L_CHANGED lno. */
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recno_t rptlines[L_YANKED + 1];/* Ex/vi: lines changed by last op. */
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TEXTH tiq[1]; /* Ex/vi: text input queue. */
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SCRIPT *script; /* Vi: script mode information .*/
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recno_t defscroll; /* Vi: ^D, ^U scroll information. */
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/* Display character. */
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char cname[MAX_CHARACTER_COLUMNS + 1];
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size_t clen; /* Length of display character. */
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ARG_CHAR_T lastc; /* The last display character. */
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enum { /* Vi editor mode. */
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SM_APPEND = 0, SM_CHANGE, SM_COMMAND, SM_INSERT,
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SM_REPLACE } showmode;
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void *ex_private; /* Ex private area. */
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void *vi_private; /* Vi private area. */
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void *cl_private; /* Curses private area. */
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CONV conv; /* Conversion functions. */
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CONVWIN cw; /* Conversion buffer. */
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/* PARTIALLY OR COMPLETELY COPIED FROM PREVIOUS SCREEN. */
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char *alt_name; /* Ex/vi: alternate file name. */
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CHAR_T at_lbuf; /* Ex/vi: Last executed at buffer. */
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/* Ex/vi: re_compile flags. */
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#define RE_C_CSCOPE 0x0001 /* Compile cscope pattern. */
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#define RE_C_SEARCH 0x0002 /* Compile search replacement. */
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#define RE_C_SILENT 0x0004 /* No error messages. */
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#define RE_C_SUBST 0x0008 /* Compile substitute replacement. */
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#define RE_C_TAG 0x0010 /* Compile ctag pattern. */
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#define RE_WSTART L("[[:<:]]") /* Ex/vi: not-in-word search pattern. */
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#define RE_WSTOP L("[[:>:]]")
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#define RE_WSTART_LEN (SIZE(RE_WSTART) - 1)
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#define RE_WSTOP_LEN (SIZE(RE_WSTOP) - 1)
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/* Ex/vi: flags to search routines. */
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#define SEARCH_CSCOPE 0x0001 /* Search for a cscope pattern. */
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#define SEARCH_EOL 0x0002 /* Offset past EOL is okay. */
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#define SEARCH_FILE 0x0004 /* Search the entire file. */
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#define SEARCH_INCR 0x0008 /* Search incrementally. */
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#define SEARCH_MSG 0x0010 /* Display search messages. */
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#define SEARCH_PARSE 0x0020 /* Parse the search pattern. */
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#define SEARCH_SET 0x0040 /* Set search direction. */
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#define SEARCH_TAG 0x0080 /* Search for a tag pattern. */
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#define SEARCH_WMSG 0x0100 /* Display search-wrapped messages. */
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/* Ex/vi: RE information. */
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dir_t searchdir; /* Last file search direction. */
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regex_t re_c; /* Search RE: compiled form. */
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CHAR_T *re; /* Search RE: uncompiled form. */
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size_t re_len; /* Search RE: uncompiled length. */
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regex_t subre_c; /* Substitute RE: compiled form. */
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CHAR_T *subre; /* Substitute RE: uncompiled form. */
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size_t subre_len; /* Substitute RE: uncompiled length). */
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CHAR_T *repl; /* Substitute replacement. */
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size_t repl_len; /* Substitute replacement length.*/
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size_t *newl; /* Newline offset array. */
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size_t newl_len; /* Newline array size. */
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size_t newl_cnt; /* Newlines in replacement. */
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u_int8_t c_suffix; /* Edcompatible 'c' suffix value. */
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u_int8_t g_suffix; /* Edcompatible 'g' suffix value. */
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OPTION opts[O_OPTIONCOUNT]; /* Ex/vi: Options. */
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/*
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* Screen flags.
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*
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* Editor screens.
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*/
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#define SC_EX 0x00000001 /* Ex editor. */
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#define SC_VI 0x00000002 /* Vi editor. */
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/*
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* Screen formatting flags, first major, then minor.
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*
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* SC_SCR_EX
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* Ex screen, i.e. cooked mode.
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* SC_SCR_VI
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* Vi screen, i.e. raw mode.
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* SC_SCR_EXWROTE
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* The editor had to write on the screen behind curses' back, and we can't
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* let curses change anything until the user agrees, e.g. entering the
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* commands :!utility followed by :set. We have to switch back into the
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* vi "editor" to read the user's command input, but we can't touch the
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* rest of the screen because it's known to be wrong.
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* SC_SCR_REFORMAT
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* The expected presentation of the lines on the screen have changed,
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* requiring that the intended screen lines be recalculated. Implies
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* SC_SCR_REDRAW.
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* SC_SCR_REDRAW
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* The screen doesn't correctly represent the file; repaint it. Note,
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* setting SC_SCR_REDRAW in the current window causes *all* windows to
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* be repainted.
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* SC_SCR_CENTER
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* If the current line isn't already on the screen, center it.
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* SC_SCR_TOP
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* If the current line isn't already on the screen, put it at the to@.
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*/
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#define SC_SCR_EX 0x00000004 /* Screen is in ex mode. */
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#define SC_SCR_VI 0x00000008 /* Screen is in vi mode. */
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#define SC_SCR_EXWROTE 0x00000010 /* Ex overwrite: see comment above. */
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#define SC_SCR_REFORMAT 0x00000020 /* Reformat (refresh). */
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#define SC_SCR_REDRAW 0x00000040 /* Refresh. */
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#define SC_SCR_CENTER 0x00000080 /* Center the line if not visible. */
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#define SC_SCR_TOP 0x00000100 /* Top the line if not visible. */
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/* Screen/file changes. */
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#define SC_EXIT 0x00000200 /* Exiting (not forced). */
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#define SC_EXIT_FORCE 0x00000400 /* Exiting (forced). */
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#define SC_FSWITCH 0x00000800 /* Switch underlying files. */
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#define SC_SSWITCH 0x00001000 /* Switch screens. */
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#define SC_ARGNOFREE 0x00002000 /* Argument list wasn't allocated. */
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#define SC_ARGRECOVER 0x00004000 /* Argument list is recovery files. */
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#define SC_AT_SET 0x00008000 /* Last at buffer set. */
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#define SC_COMEDIT 0x00010000 /* Colon command-line edit window. */
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#define SC_EX_GLOBAL 0x00020000 /* Ex: executing a global command. */
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#define SC_EX_SILENT 0x00040000 /* Ex: batch script. */
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#define SC_EX_WAIT_NO 0x00080000 /* Ex: don't wait for the user. */
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#define SC_EX_WAIT_YES 0x00100000 /* Ex: do wait for the user. */
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#define SC_READONLY 0x00200000 /* Persistent readonly state. */
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#define SC_RE_SEARCH 0x00400000 /* Search RE has been compiled. */
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#define SC_RE_SUBST 0x00800000 /* Substitute RE has been compiled. */
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#define SC_SCRIPT 0x01000000 /* Shell script window. */
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#define SC_STATUS 0x02000000 /* Welcome message. */
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#define SC_STATUS_CNT 0x04000000 /* Welcome message plus file count. */
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#define SC_TINPUT 0x08000000 /* Doing text input. */
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#define SC_TINPUT_INFO 0x10000000 /* Doing text input on info line. */
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#define SC_CONV_ERROR 0x20000000 /* Met with a conversion error. */
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u_int32_t flags;
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};
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