smol/src/nano.h

/* $Id$ */
/**************************************************************************
 *   nano.h                                                               *
 *                                                                        *
 *   Copyright (C) 1999-2003 Chris Allegretta                             *
 *   This program is free software; you can redistribute it and/or modify *
 *   it under the terms of the GNU General Public License as published by *
 *   the Free Software Foundation; either version 2, or (at your option)  *
 *   any later version.                                                   *
 *                                                                        *
 *   This program is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of       *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
 *   GNU General Public License for more details.                         *
 *                                                                        *
 *   You should have received a copy of the GNU General Public License    *
 *   along with this program; if not, write to the Free Software          *
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
 *                                                                        *
 **************************************************************************/

#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif

#ifndef NANO_H
#define NANO_H 1

/* Macros for the flags int... */
#define SET(bit) flags |= bit
#define UNSET(bit) flags &= ~bit
#define ISSET(bit) ((flags & bit) != 0)
#define TOGGLE(bit) flags ^= bit

/* Define charalloc as a macro rather than duplicating code */
#define charalloc(howmuch) (char *)nmalloc((howmuch) * sizeof(char))
#define charealloc(ptr, howmuch) (char *)nrealloc(ptr, (howmuch) * sizeof(char))
#define charmove(dest, src, n) memmove(dest, src, (n) * sizeof(char))
#ifdef BROKEN_REGEXEC
#define regexec(preg, string, nmatch, pmatch, eflags) regexec_safe(preg, string, nmatch, pmatch, eflags)
#endif

#ifndef NANO_SMALL
/* For the backup file copy ... */
#define COPYFILEBLOCKSIZE 1024
#endif

#ifdef USE_SLANG
/* Slang support enabled */
#include <slcurses.h>
#define KEY_DC SL_KEY_DELETE
#define KEY_IC SL_KEY_IC
#elif defined(HAVE_NCURSES_H)
#include <ncurses.h>
#else /* Uh oh */
#include <curses.h>
#endif /* CURSES_H */

#ifdef ENABLE_NLS
#  ifdef HAVE_LIBINTL_H
#    include <libintl.h>
#  endif
#  define _(string) gettext(string)
#  define P_(singular, plural, number) ngettext(singular, plural, number)
#else
#  define _(string) (string)
#  define P_(singular, plural, number) (number == 1 ? singular : plural)
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include "config.h"

#if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
#include <glib.h>
# ifndef HAVE_SNPRINTF
#  define snprintf	g_snprintf
# endif
# ifndef HAVE_VSNPRINTF
#  define vsnprintf	g_vsnprintf
# endif
#endif

#ifndef HAVE_STRCASECMP
#define strcasecmp nstricmp
#endif

#ifndef HAVE_STRNCASECMP
#define strncasecmp nstrnicmp
#endif

/* Assume ERR is defined as -1.  To avoid duplicate case values when
   some key definitions are missing, we have to set all of these, and
   all of the special sentinel values below, to different negative
   values other than -1. */

/* HP-UX 10 & 11 do not seem to support KEY_HOME and KEY_END */
#ifndef KEY_HOME
#define KEY_HOME -2
#endif

#ifndef KEY_END
#define KEY_END -3
#endif

/* Slang and SunOS 5.7-5.9 do not seem to support KEY_RESIZE */
#ifndef KEY_RESIZE
#define KEY_RESIZE -4
#endif

/* Slang does not seem to support KEY_SUSPEND, KEY_SLEFT, or
   KEY_SRIGHT */
#ifndef KEY_SUSPEND
#define KEY_SUSPEND -5
#endif

#ifndef KEY_SLEFT
#define KEY_SLEFT -6
#endif

#ifndef KEY_SRIGHT
#define KEY_SRIGHT -7
#endif

#define VERMSG "GNU nano " VERSION

#ifndef NCURSES_MOUSE_VERSION
#define DISABLE_MOUSE 1
#endif

#if defined(DISABLE_WRAPPING) && defined(DISABLE_JUSTIFY)
#define DISABLE_WRAPJUSTIFY 1
#endif

/* Structure types */
typedef struct filestruct {
    char *data;
    struct filestruct *next;	/* Next node */
    struct filestruct *prev;	/* Previous node */
    int lineno;			/* The line number */
} filestruct;

#ifdef ENABLE_MULTIBUFFER
typedef struct openfilestruct {
    char *filename;
#ifndef NANO_SMALL
    struct stat originalfilestat;
#endif
    struct openfilestruct *next;	/* Next node */
    struct openfilestruct *prev;	/* Previous node */
    struct filestruct *fileage;	/* Current file */
    struct filestruct *filebot;	/* Current file's last line */
#ifndef NANO_SMALL
    struct filestruct *file_mark_beginbuf;
				/* Current file's beginning marked line */
    int file_mark_beginx;	/* Current file's beginning marked line's
				   x-coordinate position */
#endif
    int file_current_x;		/* Current file's x-coordinate position */
    int file_current_y;		/* Current file's y-coordinate position */
    int file_flags;		/* Current file's flags: modification
				   status (and marking status, if
				   available) */
    int file_placewewant;	/* Current file's place we want */
    int file_totlines;		/* Current file's total number of lines */
    long file_totsize;		/* Current file's total size */
    int file_lineno;		/* Current file's line number */
} openfilestruct;
#endif

typedef struct shortcut {
    /* Key values that aren't used should be set to NANO_NO_KEY */
    int val;		/* Special sentinel key or control key we want
			 * bound */
    int altval;		/* Alt key we want bound */
    int func_key;	/* Function key we want bound */
    int misc;		/* Other Alt key we want bound */
    int viewok;		/* Is this function legal in view mode? */
    int (*func) (void);	/* Function to call when we catch this key */
    const char *desc;	/* Description, e.g. "Page Up" */
#ifndef DISABLE_HELP
    const char *help;	/* Help file entry text */
#endif
    struct shortcut *next;
} shortcut;

#ifndef NANO_SMALL
typedef struct toggle {
   int val;		/* Sequence to toggle the key.  Should only need 1 */
   const char *desc;	/* Description for when toggle is, uh, toggled,
			   e.g. "Pico Messages"; we'll append Enabled or
			   Disabled */
   int flag;		/* What flag actually gets toggled */
   struct toggle *next;
} toggle;
#endif /* !NANO_SMALL */

#ifdef ENABLE_NANORC
typedef struct rcoption {
   const char *name;
   int flag;
} rcoption;
#endif /* ENABLE_NANORC */

#ifdef ENABLE_COLOR

typedef struct colortype {
    int fg;			/* fg color */
    int bg;			/* bg color */
    int bright;			/* Is this color A_BOLD? */
    int pairnum;		/* Color pair number used for this fg/bg */
    regex_t start;		/* Start (or all) of the regex string */
    regex_t *end;		/* End of the regex string */
    struct colortype *next;
} colortype;

typedef struct exttype {
    regex_t val;		/* The extensions that match this syntax. */
    struct exttype *next;
} exttype;

typedef struct syntaxtype {
    char *desc;			/* Name of this syntax type */
    exttype *extensions;	/* List of extensions that this applies to */
    colortype *color;		/* color struct for this syntax */
    struct syntaxtype *next;
} syntaxtype;

#endif /* ENABLE_COLOR */

#ifndef NANO_SMALL
typedef struct historytype {
    struct historytype *next;
    struct historytype *prev;
    char *data;
} historytype;
typedef struct historyheadtype {
    struct historytype *next;	/* keep *next and *prev members together */
    struct historytype *prev;	/* and in same order as in historytype */
    struct historytype *tail;
    struct historytype *current;
    int count;
    int len;
} historyheadtype;
#endif /* !NANO_SMALL */

/* Bitwise flags so we can save space (or more correctly, not waste it) */

#define MODIFIED		(1<<0)
#define KEEP_CUTBUFFER		(1<<1)
#define CASE_SENSITIVE		(1<<2)
#define MARK_ISSET		(1<<3)
#define CONSTUPDATE		(1<<4)
#define NO_HELP			(1<<5)
#define NOFOLLOW_SYMLINKS	(1<<6)
#define SUSPEND			(1<<7)
#define NO_WRAP			(1<<8)
#define AUTOINDENT		(1<<9)
#define VIEW_MODE		(1<<10)
#define USE_MOUSE		(1<<11)
#define USE_REGEXP		(1<<12)
#define REGEXP_COMPILED		(1<<13)
#define TEMP_OPT		(1<<14)
#define CUT_TO_END		(1<<15)
#define REVERSE_SEARCH		(1<<16)
#define MULTIBUFFER		(1<<17)
#define DOS_FILE		(1<<18)
#define MAC_FILE		(1<<19)
#define SMOOTHSCROLL		(1<<20)
#define DISABLE_CURPOS		(1<<21)	/* Damn, we still need it */
#define REBIND_DELETE		(1<<22)
#define NO_CONVERT		(1<<23)
#define BACKUP_FILE		(1<<24)
#define NO_RCFILE		(1<<25)
#define COLOR_SYNTAX		(1<<26)
#define PRESERVE		(1<<27)
#define HISTORY_CHANGED		(1<<28)
#define HISTORYLOG		(1<<29)
#define JUSTIFY_MODE		(1<<30)

/* Control key sequences, changing these would be very very bad */

#define NANO_CONTROL_SPACE 0
#define NANO_CONTROL_A 1
#define NANO_CONTROL_B 2
#define NANO_CONTROL_C 3
#define NANO_CONTROL_D 4
#define NANO_CONTROL_E 5
#define NANO_CONTROL_F 6
#define NANO_CONTROL_G 7
#define NANO_CONTROL_H 8
#define NANO_CONTROL_I 9
#define NANO_CONTROL_J 10
#define NANO_CONTROL_K 11
#define NANO_CONTROL_L 12
#define NANO_CONTROL_M 13
#define NANO_CONTROL_N 14
#define NANO_CONTROL_O 15
#define NANO_CONTROL_P 16
#define NANO_CONTROL_Q 17
#define NANO_CONTROL_R 18
#define NANO_CONTROL_S 19
#define NANO_CONTROL_T 20
#define NANO_CONTROL_U 21
#define NANO_CONTROL_V 22
#define NANO_CONTROL_W 23
#define NANO_CONTROL_X 24
#define NANO_CONTROL_Y 25
#define NANO_CONTROL_Z 26
#define NANO_CONTROL_3 27
#define NANO_CONTROL_4 28
#define NANO_CONTROL_5 29
#define NANO_CONTROL_6 30
#define NANO_CONTROL_7 31
#define NANO_CONTROL_8 127

#define NANO_ALT_A 'a'
#define NANO_ALT_B 'b'
#define NANO_ALT_C 'c'
#define NANO_ALT_D 'd'
#define NANO_ALT_E 'e'
#define NANO_ALT_F 'f'
#define NANO_ALT_G 'g'
#define NANO_ALT_H 'h'
#define NANO_ALT_I 'i'
#define NANO_ALT_J 'j'
#define NANO_ALT_K 'k'
#define NANO_ALT_L 'l'
#define NANO_ALT_M 'm'
#define NANO_ALT_N 'n'
#define NANO_ALT_O 'o'
#define NANO_ALT_P 'p'
#define NANO_ALT_Q 'q'
#define NANO_ALT_R 'r'
#define NANO_ALT_S 's'
#define NANO_ALT_T 't'
#define NANO_ALT_U 'u'
#define NANO_ALT_V 'v'
#define NANO_ALT_W 'w'
#define NANO_ALT_X 'x'
#define NANO_ALT_Y 'y'
#define NANO_ALT_Z 'z'
#define NANO_ALT_PERIOD '.'
#define NANO_ALT_COMMA ','
#define NANO_ALT_LCARAT '<'
#define NANO_ALT_RCARAT '>'
#define NANO_ALT_RBRACKET ']'
#define NANO_ALT_SPACE ' '

/* Some semi-changeable keybindings; don't play with unless you're sure
   you know what you're doing */

/* No key at all. */
#define NANO_NO_KEY		-8

/* Special sentinel key. */
#define NANO_HISTORY_KEY	-9

/* Normal keys. */
#define NANO_INSERTFILE_KEY	NANO_CONTROL_R
#define NANO_INSERTFILE_FKEY	KEY_F(5)
#define NANO_EXIT_KEY		NANO_CONTROL_X
#define NANO_EXIT_FKEY		KEY_F(2)
#define NANO_WRITEOUT_KEY	NANO_CONTROL_O
#define NANO_WRITEOUT_FKEY	KEY_F(3)
#define NANO_GOTO_KEY		NANO_CONTROL_7
#define NANO_GOTO_FKEY		KEY_F(13)
#define NANO_ALT_GOTO_KEY	NANO_ALT_G
#define NANO_HELP_KEY		NANO_CONTROL_G
#define NANO_HELP_FKEY		KEY_F(1)
#define NANO_WHEREIS_KEY	NANO_CONTROL_W
#define NANO_WHEREIS_FKEY	KEY_F(6)
#define NANO_WHEREIS_NEXT_KEY	NANO_ALT_W
#define NANO_REPLACE_KEY	NANO_CONTROL_4
#define NANO_REPLACE_FKEY	KEY_F(14)
#define NANO_ALT_REPLACE_KEY	NANO_ALT_R
#define NANO_OTHERSEARCH_KEY	NANO_CONTROL_R
#define NANO_PREVPAGE_KEY	NANO_CONTROL_Y
#define NANO_PREVPAGE_FKEY	KEY_F(7)
#define NANO_NEXTPAGE_KEY	NANO_CONTROL_V
#define NANO_NEXTPAGE_FKEY	KEY_F(8)
#define NANO_CUT_KEY		NANO_CONTROL_K
#define NANO_CUT_FKEY		KEY_F(9)
#define NANO_UNCUT_KEY		NANO_CONTROL_U
#define NANO_UNCUT_FKEY		KEY_F(10)
#define NANO_CURSORPOS_KEY	NANO_CONTROL_C
#define NANO_CURSORPOS_FKEY	KEY_F(11)
#define NANO_SPELL_KEY		NANO_CONTROL_T
#define NANO_SPELL_FKEY		KEY_F(12)
#define NANO_FIRSTLINE_KEY	NANO_PREVPAGE_KEY
#define NANO_LASTLINE_KEY	NANO_NEXTPAGE_KEY
#define NANO_CANCEL_KEY		NANO_CONTROL_C
#define NANO_REFRESH_KEY	NANO_CONTROL_L
#define NANO_JUSTIFY_KEY	NANO_CONTROL_J
#define NANO_JUSTIFY_FKEY	KEY_F(4)
#define NANO_UNJUSTIFY_KEY	NANO_CONTROL_U
#define NANO_UP_KEY		NANO_CONTROL_P
#define NANO_DOWN_KEY		NANO_CONTROL_N
#define NANO_FORWARD_KEY	NANO_CONTROL_F
#define NANO_BACK_KEY		NANO_CONTROL_B
#define NANO_MARK_KEY		NANO_CONTROL_6
#define NANO_ALT_MARK_KEY	NANO_ALT_A
#define NANO_HOME_KEY		NANO_CONTROL_A
#define NANO_END_KEY		NANO_CONTROL_E
#define NANO_DELETE_KEY		NANO_CONTROL_D
#define NANO_BACKSPACE_KEY	NANO_CONTROL_H
#define NANO_TAB_KEY		NANO_CONTROL_I
#define NANO_SUSPEND_KEY	NANO_CONTROL_Z
#define NANO_ENTER_KEY		NANO_CONTROL_M
#define NANO_FROMSEARCHTOGOTO_KEY NANO_CONTROL_T
#define NANO_TOFILES_KEY	NANO_CONTROL_T
#define NANO_APPEND_KEY		NANO_ALT_A
#define NANO_PREPEND_KEY	NANO_ALT_P
#define NANO_OPENPREV_KEY	NANO_ALT_LCARAT
#define NANO_OPENNEXT_KEY	NANO_ALT_RCARAT
#define NANO_OPENPREV_ALTKEY	NANO_ALT_COMMA
#define NANO_OPENNEXT_ALTKEY	NANO_ALT_PERIOD
#define NANO_BRACKET_KEY	NANO_ALT_RBRACKET
#define NANO_EXTCMD_KEY		NANO_CONTROL_X
#define NANO_NEXTWORD_KEY	NANO_CONTROL_SPACE
#define NANO_PREVWORD_KEY	NANO_ALT_SPACE
#define NANO_PARABEGIN_KEY	NANO_CONTROL_W
#define NANO_PARAEND_KEY	NANO_CONTROL_O
#define NANO_VERBATIM_KEY	NANO_ALT_V

#ifndef NANO_SMALL
/* Toggles do not exist with NANO_SMALL. */
#define TOGGLE_CONST_KEY	NANO_ALT_C
#define TOGGLE_AUTOINDENT_KEY	NANO_ALT_I
#define TOGGLE_SUSPEND_KEY	NANO_ALT_Z
#define TOGGLE_NOHELP_KEY	NANO_ALT_X
#define TOGGLE_MOUSE_KEY	NANO_ALT_M
#define TOGGLE_CUTTOEND_KEY	NANO_ALT_K
#define TOGGLE_REGEXP_KEY	NANO_ALT_R
#define TOGGLE_WRAP_KEY		NANO_ALT_L
#define TOGGLE_BACKWARDS_KEY	NANO_ALT_B
#define TOGGLE_CASE_KEY		NANO_ALT_C
#define TOGGLE_MULTIBUFFER_KEY	NANO_ALT_F
#define TOGGLE_DOS_KEY		NANO_ALT_D
#define TOGGLE_MAC_KEY		NANO_ALT_O
#define TOGGLE_SMOOTH_KEY	NANO_ALT_S
#define TOGGLE_NOCONVERT_KEY	NANO_ALT_N
#define TOGGLE_BACKUP_KEY	NANO_ALT_B
#define TOGGLE_SYNTAX_KEY	NANO_ALT_Y
#endif /* !NANO_SMALL */

#define MAIN_VISIBLE 12

#define VIEW 1
#define NOVIEW 0

typedef enum {
    TOP, CENTER, NONE
} topmidnone;

/* Minimum editor window rows required for nano to work correctly */
#define MIN_EDITOR_ROWS 3

/* Minimum editor window cols required for nano to work correctly */
#define MIN_EDITOR_COLS 10

/* Default number of characters from end-of-line where text wrapping
   occurs */
#define CHARS_FROM_EOL 8

/* Maximum number of search history strings saved, same value used for
   replace history */
#define MAX_SEARCH_HISTORY 100

#endif /* !NANO_H */