/*************************************************************************
* TinyFugue - programmable mud client
* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2002, 2003, 2004, 2005, 2006-2007 Ken Keys
*
* TinyFugue (aka "tf") is protected under the terms of the GNU
* General Public License. See the file "COPYING" for details.
************************************************************************/
/* $Id: tfio.h,v 35004.66 2007/01/13 23:12:39 kkeys Exp $ */
#ifndef TFIO_H
#define TFIO_H
#ifdef _POSIX_VERSION
# include <sys/types.h>
# define MODE_T mode_t
#else
# define MODE_T unsigned long
#endif
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "pattern.h"
#ifndef S_IROTH
# define S_IWUSR 00200
# define S_IRUSR 00400
# define S_IRGRP 00040
# define S_IROTH 00004
#endif
/* TFILE types */
typedef enum { TF_NULL, TF_QUEUE, TF_FILE, TF_PIPE } TFILE_type_t;
/* Sprintf flags */
#define SP_APPEND 1 /* don't truncate first, just append */
#define SP_CHECK 2 /* make sure char* args won't SIGSEGV or SIGBUS */
typedef struct PhysLine {
conString *str;
int start;
short len;
short indent;
char visible; /* line passed screen_filter() */
char tmp; /* should only be displayed once */
} PhysLine;
typedef struct Queue {
List list;
} Queue;
struct Screen {
int outcount; /* lines remaining until pause */
struct List pline; /* already displayed physical lines */
/* pline invariant: if one pline corresponding to an lline is in the list,
* all plines corresponding to that lline are in the list. */
int npline; /* number of physical lines in pline */
int nlline; /* number of logical lines in pline */
int maxlline; /* max number of logical lines in pline */
int nback; /* number of lines scrolled back */
int nnew; /* number of new lines */
int nback_filtered; /* number of filtered lines scrolled back */
int nnew_filtered; /* number of filtered new lines */
ListEntry *top, *bot; /* top and bottom of view in plines */
ListEntry *maxbot; /* last line in plines that bot has reached */
int viewsize; /* # of plines between top and bot, inclusive */
int scr_wrapflag; /* wrapflag used to wrap plines */
int scr_wrapsize; /* wrapsize used to wrap plines */
int scr_wrapspace; /* wrapspace used to wrap plines */
int scr_wrappunct; /* wrappunct used to wrap plines */
Pattern filter_pat; /* filter pattern */
char filter_enabled; /* is filter enabled? */
char filter_sense; /* 0 = negative, 1 = positive */
char filter_attr; /* filter by attributes? */
char selflush; /* selective flushing flag */
char needs_refilter; /* top and bot need to be recalculated */
char partialview; /* do not expand viewsize to fit terminal */
char paused; /* paused at a More prompt? */
char active; /* has new lines without the A attribute? */
};
/* TF's analogue of stdio's FILE */
typedef struct TFILE {
int id;
struct ListEntry *node;
TFILE_type_t type;
char *name;
union {
Queue *queue;
FILE *fp;
} u;
char buf[1024];
int off, len;
MODE_T mode;
char tfmode;
short warned;
short autoflush;
} TFILE;
#ifndef HAVE_DRIVES
# define is_absolute_path(path) \
((path)[0] == '/' || (path)[0] == '~')
#else
# define is_absolute_path(path) \
((path)[0] == '/' || (path)[0] == '~' || \
(is_alpha((path)[0]) && (path)[1] == ':'))
#endif
extern TFILE *loadfile; /* currently /load'ing file */
extern int loadline; /* line number of /load'ing file */
extern int loadstart; /* line number of command start in /load'ing file */
extern TFILE *tfin; /* tf input queue */
extern TFILE *tfout; /* tf output queue */
extern TFILE *tferr; /* tf error queue */
extern TFILE *tfalert; /* tf alert file */
extern TFILE *tfkeyboard; /* keyboard, where tfin usually points */
extern TFILE *tfscreen; /* screen, where tfout & tferr usually point */
extern Screen*fg_screen; /* current screen to which tf writes */
extern Screen*default_screen; /* default screen (unconnected or !virtscreen) */
extern int read_depth; /* depth of user kb reads */
extern int readsafe; /* safe to to a user kb read? */
extern PhysLine *plpool; /* freelist of PhysLines */
#define operror(str) eprintf("%s: %s", str, strerror(errno))
#define oputline(line) tfputline(line, tfout)
#define tfputs(str, f) tfnputs(str, -1, f)
#define oputs(str) tfputs(str, tfout)
#define eputs(str) tfputs(str, tferr)
#define tfputc(c, file) fputc((c), (file)->u.fp)
#define tfflush(file) \
((file->type==TF_FILE || file->type==TF_PIPE) ? fflush((file)->u.fp) : 0)
extern void init_tfio(void);
extern Screen*new_screen(long size);
extern void free_screen_lines(Screen *screen);
extern void free_screen(Screen *screen);
extern char *tfname(const char *name, const char *macname);
extern char *expand_filename(const char *str);
extern TFILE *tfopen(const char *name, const char *mode);
extern int tfclose(TFILE *file);
extern void tfnputs(const char *str, int n, TFILE *file);
extern attr_t tfputansi(const char *str, TFILE *file, attr_t attrs);
extern int tfputp(const char *str, TFILE *file);
extern void tfputline(struct conString *line, TFILE *file);
extern void vSprintf(struct String *buf, int flags,
const char *fmt, va_list ap);
extern void Sprintf(struct String *buf, const char *fmt, ...)
format_printf(3, 4);
extern void Sappendf(struct String *buf, const char *fmt, ...)
format_printf(2, 3);
extern void oprintf(const char *fmt, ...) format_printf(1, 2);
extern void tfprintf(TFILE *file, const char *fmt, ...)
format_printf(2, 3);
extern void eprefix(String *buffer);
extern void eprintf(const char *fmt, ...) format_printf(1, 2);
extern void wprintf(const char *fmt, ...) format_printf(1, 2);
extern char igetchar(void);
extern int handle_tfopen_func(const char *name, const char *mode);
extern TFILE *find_tfile(const char *handle);
extern TFILE *find_usable_tfile(const char *handle, int mode);
extern int tfreadable(TFILE *file);
extern struct String *tfgetS(struct String *str, TFILE *file);
extern void hide_screen(Screen *screen);
extern void unhide_screen(Screen *screen);
extern void switch_screen(int quiet);
#endif /* TFIO_H */