src/proto.h

/* $Id$ */
/**************************************************************************
 *   proto.h                                                              *
 *                                                                        *
 *   Copyright (C) 1999-2004 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.            *
 *                                                                        *
 **************************************************************************/

/* Externs. */

#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_REGEX_H
#include <regex.h>
#endif
#include "nano.h"

#ifndef DISABLE_WRAPJUSTIFY
extern ssize_t wrap_at;
#endif
extern int editwinrows;
extern size_t current_x;
extern int current_y;
extern int totlines;
extern size_t placewewant;
#ifndef NANO_SMALL
extern size_t mark_beginx;
#endif
extern long totsize;
extern long flags;
extern ssize_t tabsize;
extern int currslen;

#if !defined(NANO_SMALL) && defined(ENABLE_NANORC)
extern char *whitespace;
#endif

#ifndef DISABLE_JUSTIFY
extern char *punct;
extern char *brackets;
extern char *quotestr;
#ifdef HAVE_REGEX_H
extern regex_t quotereg;
extern int quoterc;
extern char *quoteerr;
#else
extern size_t quotelen;
#endif
#endif

#ifndef NANO_SMALL
extern char *backup_dir;
#endif

extern WINDOW *topwin, *edit, *bottomwin;
extern char *filename;
extern struct stat originalfilestat;
extern char *answer;
extern char *hblank;
#ifndef DISABLE_HELP
extern char *help_text;
#endif
extern char *last_search;
extern char *last_replace;
#ifndef DISABLE_OPERATINGDIR
extern char *operating_dir;
extern char *full_operating_dir;
#endif
#ifndef DISABLE_SPELLER
extern char *alt_speller;
#endif

extern struct stat fileinfo;
extern filestruct *current, *fileage, *edittop, *filebot;
extern filestruct *cutbuffer;
#ifndef DISABLE_JUSTIFY
extern filestruct *jusbuffer;
#endif
extern partition *filepart;
#ifndef NANO_SMALL
extern filestruct *mark_beginbuf;
#endif

#ifdef ENABLE_MULTIBUFFER
extern openfilestruct *open_files;
#endif

#ifdef ENABLE_COLOR
extern const colortype *colorstrings;
extern syntaxtype *syntaxes;
extern char *syntaxstr;
#endif

extern shortcut *shortcut_list;
extern shortcut *main_list, *whereis_list;
extern shortcut *replace_list, *gotoline_list;
extern shortcut *writefile_list, *insertfile_list;
extern shortcut *replace_list_2;
#ifndef NANO_SMALL
extern shortcut *extcmd_list;
#endif
#ifndef DISABLE_HELP
extern shortcut *help_list;
#endif
#ifndef DISABLE_SPELLER
extern shortcut *spell_list;
#endif
#ifndef DISABLE_BROWSER
extern shortcut *browser_list, *gotodir_list;
#endif

#if !defined(DISABLE_BROWSER) || !defined(DISABLE_HELP) || !defined(DISABLE_MOUSE)
extern const shortcut *currshortcut;
#endif

#ifdef HAVE_REGEX_H
extern regex_t search_regexp;
extern regmatch_t regmatches[10];
#ifdef ENABLE_COLOR
extern regex_t syntaxfile_regexp;
extern regmatch_t synfilematches[1];
#endif /* ENABLE_COLOR */
#endif /* HAVE_REGEX_H */

#ifndef NANO_SMALL
extern toggle *toggles;
#endif

#ifndef NANO_SMALL
extern historyheadtype search_history;
extern historyheadtype replace_history;
#endif

extern bool curses_ended;

#ifdef ENABLE_NANORC
extern char *homedir;
#endif

/* Functions we want available. */

/* Public functions in color.c. */
#ifdef ENABLE_COLOR
void set_colorpairs(void);
void do_colorinit(void);
void update_color(void);
#endif /* ENABLE_COLOR */

/* Public functions in cut.c. */
void cutbuffer_reset(void);
void cut_line(void);
#ifndef NANO_SMALL
void cut_marked(void);
#endif
void cut_to_eol(void);
void do_cut_text(void);
void do_uncut_text(void);

/* Public functions in files.c. */
void new_file(void);
filestruct *read_line(char *buf, filestruct *prev, bool *first_line_ins,
	size_t len);
void load_file(void);
void read_file(FILE *f, const char *filename);
int open_file(const char *filename, bool newfie, FILE **f);
char *get_next_filename(const char *name);
#ifndef NANO_SMALL
void execute_command(const char *command);
#endif
void load_buffer(const char *name);
void do_insertfile(
#ifndef NANO_SMALL
	bool execute
#else
	void
#endif
	);
void do_insertfile_void(void);
#ifdef ENABLE_MULTIBUFFER
openfilestruct *make_new_opennode(void);
void splice_opennode(openfilestruct *begin, openfilestruct *newnode,
	openfilestruct *end);
void unlink_opennode(openfilestruct *fileptr);
void delete_opennode(openfilestruct *fileptr);
#ifdef DEBUG
void free_openfilestruct(openfilestruct *src);
#endif
void add_open_file(bool update);
void load_open_file(void);
void open_prevnext_file(bool next);
void open_prevfile_void(void);
void open_nextfile_void(void);
bool close_open_file(void);
#endif
#if !defined(DISABLE_SPELLER) || !defined(DISABLE_OPERATINGDIR)
char *get_full_path(const char *origpath);
#endif
#ifndef DISABLE_SPELLER
char *check_writable_directory(const char *path);
char *safe_tempnam(const char *dirname, const char *filename_prefix);
#endif
#ifndef DISABLE_OPERATINGDIR
void init_operating_dir(void);
int check_operating_dir(const char *currpath, int allow_tabcomp);
#endif
#ifndef NANO_SMALL
void init_backup_dir(void);
#endif
int copy_file(FILE *inn, FILE *out);
int write_file(const char *name, bool tmp, int append, bool
	nonamechange);
#ifndef NANO_SMALL
int write_marked(const char *name, bool tmp, int append);
#endif
int do_writeout(bool exiting);
void do_writeout_void(void);
char *real_dir_from_tilde(const char *buf);
#ifndef DISABLE_TABCOMP
int append_slash_if_dir(char *buf, bool *lastwastab, int *place);
char **username_tab_completion(char *buf, int *num_matches);
char **cwd_tab_completion(char *buf, int *num_matches);
char *input_tab(char *buf, int place, bool *lastwastab, int *newplace,
	bool *list);
#endif
const char *tail(const char *foo);
#ifndef DISABLE_BROWSER
int diralphasort(const void *va, const void *vb);
void free_charptrarray(char **array, size_t len);
void striponedir(char *foo);
int readable_dir(const char *path);
char **browser_init(const char *path, int *longest, int *numents);
char *do_browser(const char *inpath);
char *do_browse_from(const char *inpath);
#endif
#if !defined(NANO_SMALL) && defined(ENABLE_NANORC)
char *histfilename(void);
void load_history(void);
bool writehist(FILE *hist, historyheadtype *histhead);
void save_history(void);
#endif

/* Public functions in global.c. */
size_t length_of_list(const shortcut *s);
#ifndef NANO_SMALL
void toggle_init_one(int val, const char *desc, long flag);
void toggle_init(void);
#ifdef DEBUG
void free_toggles(void);
#endif
#endif
void sc_init_one(shortcut **shortcutage, int key, const char *desc,
#ifndef DISABLE_HELP
	const char *help,
#endif
	int metaval, int funcval, int miscval, int view, void
	(*func)(void));
void shortcut_init(bool unjustify);
void free_shortcutage(shortcut **shortcutage);
#ifdef DEBUG
void thanks_for_all_the_fish(void);
#endif

/* Public functions in move.c. */
void do_first_line(void);
void do_last_line(void);
void do_home(void);
void do_end(void);
void do_page_up(void);
void do_page_down(void);
void do_up(void);
void do_down(void);
void do_left(int allow_update);
void do_left_void(void);
void do_right(int allow_update);
void do_right_void(void);

/* Public functions in nano.c. */
void finish(void);
void die(const char *msg, ...);
void die_save_file(const char *die_filename);
void die_too_small(void);
void print_view_warning(void);
void global_init(bool save_cutbuffer);
void window_init(void);
#ifndef DISABLE_MOUSE
void mouse_init(void);
#endif
#ifndef DISABLE_HELP
void help_init(void);
#endif
filestruct *make_new_node(filestruct *prevnode);
filestruct *copy_node(const filestruct *src);
void splice_node(filestruct *begin, filestruct *newnode, filestruct
	*end);
void unlink_node(const filestruct *fileptr);
void delete_node(filestruct *fileptr);
filestruct *copy_filestruct(const filestruct *src);
void free_filestruct(filestruct *src);
partition *partition_filestruct(filestruct *top, size_t top_x,
	filestruct *bot, size_t bot_x);
void unpartition_filestruct(partition **p);
void move_to_filestruct(filestruct **file_top, filestruct **file_bot,
	filestruct *top, size_t top_x, filestruct *bot, size_t bot_x);
void copy_from_filestruct(filestruct *file_top, filestruct *file_bot);
void renumber_all(void);
void renumber(filestruct *fileptr);
void print1opt(const char *shortflag, const char *longflag, const char
	*desc);
void usage(void);
void version(void);
int no_help(void);
void nano_disabled_msg(void);
#ifndef NANO_SMALL
RETSIGTYPE cancel_fork(int signal);
bool open_pipe(const char *command);
#endif
void do_char(char ch);
void do_verbatim_input(void);
void do_backspace(void);
void do_delete(void);
void do_tab(void);
void do_enter(void);
#ifndef NANO_SMALL
void do_next_word(void);
void do_prev_word(void);
void do_mark(void);
#endif
#ifndef DISABLE_WRAPPING
void wrap_reset(void);
bool do_wrap(filestruct *inptr);
#endif
#ifndef DISABLE_SPELLER
bool do_int_spell_fix(const char *word);
const char *do_int_speller(const char *tempfile_name);
const char *do_alt_speller(char *tempfile_name);
void do_spell(void);
#endif
#if !defined(NANO_SMALL) || !defined(DISABLE_JUSTIFY)
size_t indent_length(const char *line);
#endif
#ifndef DISABLE_JUSTIFY
void justify_format(filestruct *line, size_t skip);
size_t quote_length(const char *line);
bool quotes_match(const char *a_line, size_t a_quote, const char
	*b_line);
bool indents_match(const char *a_line, size_t a_indent, const char
	*b_line, size_t b_indent);
bool begpar(const filestruct *const foo);
void do_para_begin(void);
bool inpar(const char *str);
void do_para_end(void);
filestruct *backup_lines(filestruct *first_line, size_t par_len, size_t
	quote_len);
bool breakable(const char *line, ssize_t goal);
ssize_t break_line(const char *line, ssize_t goal, bool force);
bool do_para_search(size_t *const quote, size_t *const par);
void do_justify(bool full_justify);
void do_justify_void(void);
void do_full_justify(void);
#endif /* !DISABLE_JUSTIFY */
void do_exit(void);
void signal_init(void);
RETSIGTYPE handle_hupterm(int signal);
RETSIGTYPE do_suspend(int signal);
RETSIGTYPE do_cont(int signal);
#ifndef NANO_SMALL
void handle_sigwinch(int s);
void allow_pending_sigwinch(bool allow);
#endif
#ifndef NANO_SMALL
void do_toggle(const toggle *which);
#endif
void disable_extended_input(void);
void disable_signals(void);
#ifndef NANO_SMALL
void enable_signals(void);
#endif
void disable_flow_control(void);
void enable_flow_control(void);
void terminal_init(void);

/* Public functions in rcfile.c. */
#ifdef ENABLE_NANORC
void rcfile_error(const char *msg, ...);
char *parse_next_word(char *ptr);
char *parse_argument(char *ptr);
#ifdef ENABLE_COLOR
int colortoint(const char *colorname, int *bright);
char *parse_next_regex(char *ptr);
int nregcomp(regex_t *preg, const char *regex, int eflags);
void parse_syntax(char *ptr);
void parse_colors(char *ptr);
#endif /* ENABLE_COLOR */
void parse_rcfile(FILE *rcstream);
void do_rcfile(void);
#endif /* ENABLE_NANORC */

/* Public functions in search.c. */
#ifdef HAVE_REGEX_H
int regexp_init(const char *regexp);
void regexp_cleanup(void);
#endif
void not_found_msg(const char *str);
void search_abort(void);
void search_init_globals(void);
int search_init(bool replacing, bool use_answer);
bool is_whole_word(int curr_pos, const char *datastr, const char
	*searchword);
bool findnextstr(bool can_display_wrap, bool wholeword, bool
	no_sameline, const filestruct *begin, size_t beginx, const char
	*needle, size_t *needle_len);
void findnextstr_wrap_reset(void);
void do_search(void);
#ifndef NANO_SMALL
void do_research(void);
#endif
void replace_abort(void);
#ifdef HAVE_REGEX_H
int replace_regexp(char *string, bool create_flag);
#endif
char *replace_line(const char *needle);
ssize_t do_replace_loop(const char *needle, const filestruct
	*real_current, size_t *real_current_x, bool wholewords, bool
	*canceled);
void do_replace(void);
void do_gotoline(int line, bool save_pos);
void do_gotoline_void(void);
#if defined(ENABLE_MULTIBUFFER) || !defined(DISABLE_SPELLER)
void do_gotopos(int line, size_t pos_x, int pos_y, size_t pos_pww);
#endif
void do_find_bracket(void);
#ifndef NANO_SMALL
void history_init(void);
historytype *find_node(historytype *h, const char *s);
void remove_node(historytype *r);
void insert_node(historytype *h, const char *s);
void update_history(historyheadtype *h, const char *s);
char *get_history_older(historyheadtype *h);
char *get_history_newer(historyheadtype *h);
char *get_history_completion(historyheadtype *h, char *s);
#ifdef DEBUG
void free_history(historyheadtype *h);
#endif
#endif

/* Public functions in utils.c. */
#ifdef HAVE_REGEX_H
#ifdef BROKEN_REGEXEC
int regexec_safe(const regex_t *preg, const char *string, size_t nmatch,
	regmatch_t pmatch[], int eflags);
#endif
int regexp_bol_or_eol(const regex_t *preg, const char *string);
#endif
#ifndef HAVE_ISBLANK
int is_blank_char(int c);
#endif
int is_cntrl_char(int c);
int num_of_digits(int n);
bool parse_num(const char *str, ssize_t *val);
void align(char **strp);
void null_at(char **data, size_t index);
void unsunder(char *str, size_t true_len);
void sunder(char *str);
#ifndef HAVE_STRCASECMP
int nstricmp(const char *s1, const char *s2);
#endif
#ifndef HAVE_STRNCASECMP
int nstrnicmp(const char *s1, const char *s2, size_t n);
#endif
#ifndef HAVE_STRCASESTR
const char *nstristr(const char *haystack, const char *needle);
#endif
#ifndef NANO_SMALL
const char *revstrstr(const char *haystack, const char *needle, const
	char *rev_start);
const char *revstristr(const char *haystack, const char *needle, const
	char *rev_start);
#endif
#ifndef HAVE_STRNLEN
size_t nstrnlen(const char *s, size_t maxlen);
#endif
#if !defined(NANO_SMALL) && defined(ENABLE_NANORC)
#ifndef HAVE_GETLINE
ssize_t ngetline(char **lineptr, size_t *n, FILE *stream);
#endif
#ifndef HAVE_GETDELIM
ssize_t ngetdelim(char **lineptr, size_t *n, int delim, FILE *stream);
#endif
#endif /* !NANO_SMALL && ENABLE_NANORC */
const char *strstrwrapper(const char *haystack, const char *needle,
	const char *start);
void nperror(const char *s);
void *nmalloc(size_t howmuch);
void *nrealloc(void *ptr, size_t howmuch);
char *mallocstrncpy(char *dest, const char *src, size_t n);
char *mallocstrcpy(char *dest, const char *src);
char *mallocstrassn(char *dest, char *src);
void new_magicline(void);
#ifndef NANO_SMALL
void remove_magicline(void);
void mark_order(const filestruct **top, size_t *top_x, const filestruct
	**bot, size_t *bot_x, bool *right_side_up);
#endif
void get_totals(const filestruct *begin, const filestruct *end, int
	*lines, long *size);
#ifndef DISABLE_TABCOMP
int check_wildcard_match(const char *text, const char *pattern);
#endif

/* Public functions in winio.c. */
#ifndef NANO_SMALL
void reset_kbinput(void);
#endif
void unget_kbinput(int kbinput, bool meta_key, bool func_key);
int get_kbinput(WINDOW *win, bool *meta_key, bool *func_key);
int get_translated_kbinput(int kbinput, seq_type *seq
#ifndef NANO_SMALL
	, bool reset
#endif
	);
int get_ascii_kbinput(int kbinput, size_t ascii_digits
#ifndef NANO_SMALL
	, bool reset
#endif
	);
int get_control_kbinput(int kbinput);
int get_escape_seq_kbinput(const int *escape_seq, size_t es_len, bool
	*ignore_seq);
int get_escape_seq_abcd(int kbinput);
int *get_verbatim_kbinput(WINDOW *win, int first, int *v_kbinput, size_t
	*v_len, bool allow_ascii);
int get_untranslated_kbinput(int kbinput, size_t position, bool
	allow_ascii
#ifndef NANO_SMALL
	, bool reset
#endif
	);
#ifndef DISABLE_MOUSE
bool get_mouseinput(int *mouse_x, int *mouse_y, bool allow_shortcuts);
#endif
const shortcut *get_shortcut(const shortcut *s_list, int kbinput, bool
	*meta_key, bool *func_key);
#ifndef NANO_SMALL
const toggle *get_toggle(int kbinput, bool meta_key);
#endif
int get_edit_input(bool *meta_key, bool *func_key, bool allow_funcs);
#ifndef DISABLE_MOUSE
bool get_edit_mouse(void);
#endif
size_t xplustabs(void);
size_t actual_x(const char *str, size_t xplus);
size_t strnlenpt(const char *buf, size_t size);
size_t strlenpt(const char *buf);
void blank_titlebar(void);
void blank_edit(void);
void blank_statusbar(void);
void check_statusblank(void);
void blank_bottombars(void);
char *display_string(const char *buf, size_t start_col, size_t len);
void nanoget_repaint(const char *buf, const char *inputbuf, size_t x);
int nanogetstr(bool allow_tabs, const char *buf, const char *def,
#ifndef NANO_SMALL
		historyheadtype *history_list,
#endif
		const shortcut *s
#ifndef DISABLE_TABCOMP
		, bool *list
#endif
		);
int statusq(bool allow_tabs, const shortcut *s, const char *def,
#ifndef NANO_SMALL
		historyheadtype *history_list,
#endif
		const char *msg, ...);
void statusq_abort(void);
void titlebar(const char *path);
void set_modified(void);
void statusbar(const char *msg, ...);
void bottombars(const shortcut *s);
void onekey(const char *keystroke, const char *desc, size_t len);
#ifndef NDEBUG
int check_linenumbers(const filestruct *fileptr);
#endif
size_t get_page_start(size_t column);
void reset_cursor(void);
void edit_add(const filestruct *fileptr, const char *converted, int
	yval, size_t start);
void update_line(const filestruct *fileptr, size_t index);
int need_horizontal_update(size_t old_pww);
int need_vertical_update(size_t old_pww);
void edit_scroll(updown direction, int nlines);
void edit_redraw(const filestruct *old_current, size_t old_pww);
void edit_refresh(void);
void edit_update(topmidnone location);
int do_yesno(bool all, const char *msg);
void total_refresh(void);
void display_main_list(void);
void do_cursorpos(bool constant);
void do_cursorpos_void(void);
#ifndef DISABLE_HELP
int help_line_len(const char *ptr);
void do_help(void);
#endif
void do_replace_highlight(int highlight_flag, const char *word);
#ifdef DEBUG
void dump_buffer(const filestruct *inptr);
void dump_buffer_reverse(void);
#endif
#ifdef NANO_EXTRA
void do_credits(void);
#endif