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reactos/rosapps/mc/slang/slang.h
Steven Edwards e5c0c7185e Midnight Commander for Win32 
svn path=/trunk/; revision=2456
2001-12-30 10:02:14 +00:00

1285 lines
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#ifndef DAVIS_SLANG_H_
#define DAVIS_SLANG_H_
/* -*- mode: C; mode: fold; -*- */
/* Copyright (c) 1992, 1995 John E. Davis
* All rights reserved.
*
* You may distribute under the terms of either the GNU General Public
* License or the Perl Artistic License.
*/
#define SLANG_VERSION 9938
/*{{{ System Dependent Macros and Typedefs */
#if defined(__WATCOMC__) && !defined(__QNX__)
# ifndef msdos
# define msdos
# endif
# ifndef DOS386
# define DOS386
# endif
# ifndef FLOAT_TYPE
# define FLOAT_TYPE
# endif
# ifndef pc_system
# define pc_system
# endif
#endif /* __watcomc__ */
#ifdef unix
# ifndef __unix__
# define __unix__ 1
# endif
#endif
#ifndef __GO32__
# ifdef __unix__
# define REAL_UNIX_SYSTEM
# endif
#endif
/* Set of the various defines for pc systems. This includes OS/2 */
#ifdef __MSDOS__
# ifndef msdos
# define msdos
# endif
# ifndef pc_system
# define pc_system
# endif
#endif
#ifdef __GO32__
# ifndef pc_system
# define pc_system
# endif
# ifdef REAL_UNIX_SYSTEM
# undef REAL_UNIX_SYSTEM
# endif
#endif
#if defined(__EMX__) && defined(OS2)
# ifndef pc_system
# define pc_system
# endif
# ifndef __os2__
# define __os2__
# endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if 0
}
#endif
/* ---------------------------- Generic Macros ----------------------------- */
/* __SC__ is defined for Symantec C++
DOS386 is defined for -mx memory model, 32 bit DOS extender. */
#ifdef VOID
# undef VOID
#endif
#if defined(msdos) && !defined(DOS386) & !defined(__WIN32__) && !defined(__GO32__)
# ifdef __SC__
# include <dos.h>
# endif
typedef void *VOID_STAR;
# define VOID void
# include <alloc.h>
#else
# if defined (__cplusplus) || defined(__STDC__)
typedef void *VOID_STAR;
# define VOID void
# else
typedef unsigned char *VOID_STAR;
# define VOID unsigned char
# endif
#endif
#if 1
typedef int (*FVOID_STAR)(void);
#else
# define FVOID_STAR VOID_STAR
#endif
#if defined(msdos) && !defined(DOS386) && !defined(__GO32__) && !defined(__WIN32__)
# define SLFREE(buf) farfree((void far *)(buf))
# define SLMALLOC(x) farmalloc((unsigned long) (x))
# define SLREALLOC(buf, n) farrealloc((void far *) (buf), (unsigned long) (n))
# define SLCALLOC(n, m) farcalloc((unsigned long) (n), (unsigned long) (m))
#else
# if defined(VMS) && !defined(__DECC)
# define SLFREE VAXC$FREE_OPT
# define SLMALLOC VAXC$MALLOC_OPT
# define SLREALLOC VAXC$REALLOC_OPT
# define SLCALLOC VAXC$CALLOC_OPT
# else
# define SLFREE(x) free((char *)(x))
# define SLMALLOC malloc
# if defined(__cplusplus) && !defined(__BEOS__)
# define SLREALLOC(p,n) realloc((malloc_t) (p), (n))
# else
# define SLREALLOC realloc
# endif
# define SLCALLOC calloc
# endif
#endif
#ifdef SL_MALLOC_DEBUG
# undef SLMALLOC
# undef SLCALLOC
# undef SLREALLOC
# undef SLFREE
# define SLMALLOC(x) SLdebug_malloc((unsigned long) (x))
# define SLFREE(x) SLdebug_free((unsigned char *)(x))
# define SLCALLOC(n, m) SLdebug_calloc((unsigned long) (n), (unsigned long)(m))
# define SLREALLOC(p, x) SLdebug_realloc((unsigned char *)(p), (unsigned long)(x))
#endif /* SL_MALLOC_DEBUG */
extern unsigned char *SLdebug_malloc (unsigned long);
extern unsigned char *SLdebug_calloc (unsigned long, unsigned long);
extern unsigned char *SLdebug_realloc (unsigned char *, unsigned long);
extern void SLdebug_free (unsigned char *);
extern void SLmalloc_dump_statistics (void);
extern char *SLstrcpy(register char *, register char *);
extern int SLstrcmp(register char *, register char *);
extern char *SLstrncpy(char *, register char *, register int);
extern void SLmemset (char *, char, int);
extern char *SLmemchr (register char *, register char, register int);
extern char *SLmemcpy (char *, char *, int);
extern int SLmemcmp (char *, char *, int);
#ifdef float64
# undef float64
#endif
#ifndef FLOAT64_TYPEDEFED
# define FLOAT64_TYPEDEFED
typedef double float64;
#endif
/*}}}*/
/*{{{ Interpreter Typedefs */
#define SLANG_MAX_NAME_LEN 30
/* maximum length of an identifier */
/* first char in identifiers is the hash */
/* Note that long is used for addresses instead of void *. The reason for
* this is that I have a gut feeling that sizeof (long) > sizeof(void *)
* on some machines. This is certainly the case for MSDOS where addresses
* can be 16 bit.
*/
typedef struct SLang_Name_Type
{
#ifdef SLANG_STATS
int n; /* number of times referenced */
#endif
char name[SLANG_MAX_NAME_LEN + 2]; /* [0] is hash */
unsigned char sub_type;
/* Values for main_type may be as follows. The particlular values are
* for compatability.
*/
#define SLANG_LVARIABLE 0x01
#define SLANG_INTRINSIC 0x06
#define SLANG_FUNCTION 0x07
#define SLANG_GVARIABLE 0x0D
#define SLANG_IVARIABLE 0x0E /* intrinsic variables */
/* Note!!! For Macro MAKE_VARIABLE below to work, SLANG_IVARIABLE Must
be 1 less than SLANG_RVARIABLE!!! */
#define SLANG_RVARIABLE 0x0F /* read only variable */
unsigned char main_type;
long addr;
}
SLang_Name_Type;
typedef struct SLang_Load_Type
{
long name; /* file name, string address, ... */
long handle; /* FILE *, string address, etc... */
char *ptr; /* input pointer to next line in object
* to be read.
*/
/* Things below here are used by S-Lang. */
int type; /* 'F' = file, 'S' = String, etc.. */
char *buf; /* buffer for file, etc... */
char *(*read)(struct SLang_Load_Type *); /* function to call to read obj */
int n; /* line number, etc... */
char token[256]; /* token to be parsed */
int ofs; /* offset from buf where last read
* took place
*/
int top_level; /* 1 if at top level of parsing */
} SLang_Load_Type;
#if defined(ultrix) && !defined(__GNUC__)
# ifndef NO_PROTOTYPES
# define NO_PROTOTYPES
# endif
#endif
#ifndef NO_PROTOTYPES
# define _PROTO(x) x
#else
# define _PROTO(x) ()
#endif
typedef struct SL_OOBinary_Type
{
unsigned char sub_type; /* partner type for binary op */
/* The function take the binary op as first argument, the operand types
* form the second and third parameters and the last two parameters are
* pointers to the objects themselves. It is up to the function to push
* the result on the stack. It must return 1 if it handled the operation
* return zero if the operation is not defined.
*/
int (*binary_function)_PROTO((int, unsigned char, unsigned char,
VOID_STAR, VOID_STAR));
struct SL_OOBinary_Type *next;
}
SL_OOBinary_Type;
typedef struct
{
/* Methods */
void (*destroy)_PROTO((VOID_STAR));
/* called to delete/free the object */
char *(*string)_PROTO((VOID_STAR));
/* returns a string representation of the object */
int (*unary_function)_PROTO((int, unsigned char, VOID_STAR));
/* unary operation function */
SL_OOBinary_Type *binary_ops;
int (*copy_function)_PROTO((unsigned char, VOID_STAR));
/* This function is called do make a copy of the object */
} SLang_Class_Type;
extern SLang_Class_Type *SLang_Registered_Types[256];
typedef struct
{
unsigned char main_type; /* SLANG_RVARIABLE, etc.. */
unsigned char sub_type; /* int, string, etc... */
long *obj; /* address of user structure */
/* Everything below is considered private */
unsigned int count; /* number of references */
}
SLuser_Object_Type;
/*}}}*/
/*{{{ Interpreter Function Prototypes */
extern volatile int SLang_Error;
/* Non zero if error occurs. Must be reset to zero to continue. */
extern int SLang_Traceback;
/* If non-zero, dump an S-Lang traceback upon error. Available as
_traceback in S-Lang. */
extern char *SLang_User_Prompt;
/* Prompt to use when reading from stdin */
extern int SLang_Version;
extern void (*SLang_Error_Routine)(char *);
/* Pointer to application dependent error messaging routine. By default,
messages are displayed on stderr. */
extern void (*SLang_Exit_Error_Hook)(char *);
extern void SLang_exit_error (char *);
extern void (*SLang_Dump_Routine)(char *);
/* Called if S-Lang traceback is enabled as well as other debugging
routines (e.g., trace). By default, these messages go to stderr. */
extern void (*SLang_Interrupt)(void);
/* function to call whenever inner interpreter is entered. This is
a good place to set SLang_Error to USER_BREAK. */
extern void (*SLang_User_Clear_Error)(void);
/* function that gets called when '_clear_error' is called. */
extern int (*SLang_User_Open_Slang_Object)(SLang_Load_Type *);
extern int (*SLang_User_Close_Slang_Object)(SLang_Load_Type *);
/* user defined loading routines. */
/* If non null, these call C functions before and after a slang function. */
extern void (*SLang_Enter_Function)(char *);
extern void (*SLang_Exit_Function)(char *);
/* Functions: */
extern int init_SLang(void);
/* This function is mandatory and must be called by all applications */
extern int init_SLfiles(void);
/* called if fputs, fgets, etc are need in S-Lang */
extern int init_SLmath(void);
/* called if math functions sin, cos, etc... are needed. */
extern int init_SLunix(void);
/* unix system functions chmod, stat, etc... */
extern int init_SLmatrix(void);
extern int SLang_add_table(SLang_Name_Type *, char *);
/* add application dependent function table p1 to S-Lang. A name p2 less
* than 32 characters must also be supplied.
* Returns 0 upon failure or 1 upon success. */
extern int SLang_add_global_variable (char *);
extern int SLang_load_object(SLang_Load_Type *);
extern int SLang_load_file(char *);
/* Load a file of S-Lang code for interpreting. If the parameter is
NULL, input comes from stdin. */
extern void SLang_restart(int);
/* should be called if an error occurs. If the passed integer is
* non-zero, items are popped off the stack; otherwise, the stack is
* left intact. Any time the stack is believed to be trashed, this routine
* should be called with a non-zero argument (e.g., if setjmp/longjmp is
* called). */
extern void SLang_byte_compile_file(char *, int *);
/* takes a file of S-Lang code and ``byte-compiles'' it for faster
* loading. The new filename is equivalent to the old except that a `c' is
* appended to the name. (e.g., init.sl --> init.slc). If the second
* parameter is non-zero, preprocess the file only.
*/
extern void SLang_autoload(char *, char *);
/* Automatically load S-Lang function p1 from file p2. This function
is also available via S-Lang */
extern char *SLang_load_string(char *);
/* Like SLang_load_file except input is from a null terminated string. */
extern void SLang_do_pop(void);
/* pops item off stack and frees any memory associated with it */
extern int SLang_pop_integer(int *);
/* pops integer *p0 from the stack. Returns 0 upon success and non-zero
* if the stack is empty or a type mismatch occurs, setting SLang_Error.
*/
extern int SLpop_string (char **);
extern int SLang_pop_string(char **, int *);
/* pops string *p0 from stack. If *p1 is non-zero, the string must be
* freed after its use. DO NOT FREE p0 if *p1 IS ZERO! Returns 0 upon
* success */
extern int SLang_pop_float(float64 *, int *, int *);
/* Pops float *p1 from stack. If *p3 is non-zero, *p1 was derived
from the integer *p2. Returns zero upon success. */
extern SLuser_Object_Type *SLang_pop_user_object (unsigned char);
extern void SLang_free_user_object (SLuser_Object_Type *);
extern void SLang_free_intrinsic_user_object (SLuser_Object_Type *);
/* This is like SLang_free_user_object but is meant to free those
* that have been declared as intrinsic variables by the application.
* Normally an application would never need to call this.
*/
extern void SLang_push_user_object (SLuser_Object_Type *);
extern SLuser_Object_Type *SLang_create_user_object (unsigned char);
extern int SLang_add_unary_op (unsigned char, FVOID_STAR);
extern int SLang_add_binary_op (unsigned char, unsigned char, FVOID_STAR);
extern int SLang_register_class (unsigned char, FVOID_STAR, FVOID_STAR);
extern int SLang_add_copy_operation (unsigned char, FVOID_STAR);
extern long *SLang_pop_pointer(unsigned char *, unsigned char *, int *);
/* Returns a pointer to object of type *p1,*p2 on top of stack.
If *p3 is non-zero, the Object must be freed after use. */
extern void SLang_push_float(float64);
/* Push Float onto stack */
extern void SLang_push_string(char *);
/* Push string p1 onto stack */
extern void SLang_push_integer(int);
/* push integer p1 on stack */
extern void SLang_push_malloced_string(char *);
/* The normal SLang_push_string mallocs space for the string. This one
does not. DO NOT FREE IT IF YOU USE THIS ROUTINE */
extern int SLang_is_defined(char *);
/* Return non-zero is p1 is defined otherwise returns 0. */
extern int SLang_run_hooks(char *, char *, char *);
/* calls S-Lang function p1 pushing strings p2 and p3 onto the stack
* first. If either string is NULL, it is not pushed. If p1 is not
* defined, 0 is returned. */
extern int SLang_execute_function(char *);
/* Call S-Lang function p1. Returns 0 if the function is not defined
* and 1 if it is.
*/
extern char *SLang_find_name(char *);
/* Return a pointer to p1 in table if it is defined. Returns NULL
* otherwise. This is useful when one wants to avoid redundant strings.
*/
extern char *SLang_rpn_interpret(char *);
/* Interpret string as reverse polish notation */
extern void SLang_doerror(char *);
/* set SLang_Error and display p1 as error message */
extern SLuser_Object_Type *SLang_add_array(char *, long *,
int, int, int, int,
unsigned char, unsigned char);
/* This function has not been tested thoroughly yet. Its purpose is to
* allow a S-Lang procedure to access a C array. For example, suppose that
* you have an array of 100 ints defined as:
*
* int c_array[100];
*
* By calling something like:
*
* SLang_add_array ("array_name", (long *) c_array, 1, 100, 0, 0,
* 'i', SLANG_IVARIABLE);
*
* the array can be accessed by the name 'array_name'. This function
* returns -1 upon failure. The 3rd argument specifies the dimension
* of the array, the 4th, and 5th arguments specify how many elements
* there are in the x,y, and z directions. The last argument must
* be one of:
*
* SLANG_IVARIABLE: indicates array is writable
* SLANG_RVARIABLE: indicates array is read only
*
* Returns NULL upon failure.
*/
extern int SLang_free_array_handle (int);
/* This routine may be called by application to free array handle created by
* the application. Returns 0 upon success, -1 if the handle is invalid and
* -2 if the handle is not associated with a C array.
*/
extern char *SLang_extract_list_element(char *, int *, int*);
extern void SLexpand_escaped_string (register char *, register char *,
register char *);
extern SLang_Name_Type *SLang_get_function (char *);
/* The parameter is the name of a user defined S-Lang function. This
* routine returns NULL if the function does not exist or it returns the
* a pointer to it in an internal S-Lang table. This pointer can be used
* by 'SLexecute_function' to call the function directly from C.
*/
extern void SLexecute_function(SLang_Name_Type *);
/* This function allows an application to call a S-Lang function from within
* the C program. The parameter must be non-NULL and must have been
* previously obtained by a call to 'SLang_get_function'.
*/
extern void SLroll_stack (int *);
/* If argument *p is positive, the top |*p| objects on the stack are rolled
* up. If negative, the stack is rolled down.
*/
extern void SLmake_lut (unsigned char *, unsigned char *, unsigned char);
extern int SLang_guess_type (char *);
/*}}}*/
/*{{{ Misc Functions */
extern char *SLmake_string (char *);
extern char *SLmake_nstring (char *, unsigned int);
/* Returns a null terminated string made from the first n characters of the
* string.
*/
extern char *SLcurrent_time_string (void);
extern int SLatoi(unsigned char *);
extern int SLang_extract_token(char **, char *, int);
/* returns 0 upon failure and non-zero upon success. The first parameter
* is a pointer to the input stream which this function will bump along.
* The second parameter is the buffer where the token is placed. The third
* parameter is used internally by the S-Lang library and should be 0 for
* user applications.
*/
/*}}}*/
/*{{{ SLang getkey interface Functions */
#ifdef REAL_UNIX_SYSTEM
extern int SLang_TT_Baud_Rate;
extern int SLang_TT_Read_FD;
#endif
extern int SLang_init_tty (int, int, int);
/* Initializes the tty for single character input. If the first parameter *p1
* is in the range 0-255, it will be used for the abort character;
* otherwise, (unix only) if it is -1, the abort character will be the one
* used by the terminal. If the second parameter p2 is non-zero, flow
* control is enabled. If the last parmeter p3 is zero, output processing
* is NOT turned on. A value of zero is required for the screen management
* routines. Returns 0 upon success. In addition, if SLang_TT_Baud_Rate ==
* 0 when this function is called, SLang will attempt to determine the
* terminals baud rate. As far as the SLang library is concerned, if
* SLang_TT_Baud_Rate is less than or equal to zero, the baud rate is
* effectively infinite.
*/
extern void SLang_reset_tty (void);
/* Resets tty to what it was prior to a call to SLang_init_tty */
#ifdef REAL_UNIX_SYSTEM
extern void SLtty_set_suspend_state (int);
/* If non-zero argument, terminal driver will be told to react to the
* suspend character. If 0, it will not.
*/
extern int (*SLang_getkey_intr_hook) (void);
#endif
#define SLANG_GETKEY_ERROR 0xFFFF
extern unsigned int SLang_getkey (void);
/* reads a single key from the tty. If the read fails, 0xFFFF is returned. */
extern void SLang_ungetkey_string (unsigned char *, unsigned int);
extern void SLang_buffer_keystring (unsigned char *, unsigned int);
extern void SLang_ungetkey (unsigned char);
extern void SLang_flush_input (void);
extern int SLang_input_pending (int);
extern int SLang_Abort_Char;
/* The value of the character (0-255) used to trigger SIGINT */
extern int SLang_Ignore_User_Abort;
/* If non-zero, pressing the abort character will not result in USER_BREAK
* SLang_Error. */
extern void SLang_set_abort_signal (void (*)(int));
/* If SIGINT is generated, the function p1 will be called. If p1 is NULL
* the SLang_default signal handler is called. This sets SLang_Error to
* USER_BREAK. I suspect most users will simply want to pass NULL.
*/
extern volatile int SLKeyBoard_Quit;
#ifdef VMS
/* If this function returns -1, ^Y will be added to input buffer. */
extern int (*SLtty_VMS_Ctrl_Y_Hook) (void);
#endif
/*}}}*/
/*{{{ SLang Keymap routines */
typedef struct SLKeymap_Function_Type
{
char *name;
int (*f)(void);
}
SLKeymap_Function_Type;
typedef struct SLang_Key_Type
{
unsigned char str[13]; /* key sequence */
#define SLKEY_F_INTERPRET 0x01
#define SLKEY_F_INTRINSIC 0x02
#define SLKEY_F_KEYSYM 0x03
unsigned char type; /* type of function */
#ifdef SLKEYMAP_OBSOLETE
VOID_STAR f; /* function to invoke */
#else
union
{
char *s;
FVOID_STAR f;
unsigned int keysym;
}
f;
#endif
struct SLang_Key_Type *next; /* */
}
SLang_Key_Type;
#define MAX_KEYMAP_NAME_LEN 8
typedef struct SLKeyMap_List_Type
{
char name[MAX_KEYMAP_NAME_LEN + 1];
SLang_Key_Type *keymap;
SLKeymap_Function_Type *functions; /* intrinsic functions */
}
SLKeyMap_List_Type;
/* This is arbitrary but I have got to start somewhere */
#ifdef msdos
#define SLANG_MAX_KEYMAPS 10
#else
#define SLANG_MAX_KEYMAPS 30
#endif
extern SLKeyMap_List_Type SLKeyMap_List[SLANG_MAX_KEYMAPS]; /* these better be inited to 0! */
extern char *SLang_process_keystring(char *);
#ifdef SLKEYMAP_OBSOLETE
extern int SLang_define_key1(char *, VOID_STAR, unsigned int, SLKeyMap_List_Type *);
/* define key p1 in keymap p4 to invoke function p2. If type p3 is given by
* SLKEY_F_INTRINSIC, p2 is an intrinsic function, else it is a string to be
* passed to the interpreter for evaluation. The return value is important.
* It returns 0 upon success, -1 upon malloc error, and -2 if the key is
* inconsistent. SLang_Error is set upon error. */
#else
extern int SLkm_define_key (char *, FVOID_STAR, SLKeyMap_List_Type *);
#endif
extern int SLang_define_key(char *, char *, SLKeyMap_List_Type *);
/* Like define_key1 except that p2 is a string that is to be associated with
* a function in the functions field of p3. This routine calls define_key1.
*/
extern int SLkm_define_keysym (char *, unsigned int, SLKeyMap_List_Type *);
extern void SLang_undefine_key(char *, SLKeyMap_List_Type *);
extern SLKeyMap_List_Type *SLang_create_keymap(char *, SLKeyMap_List_Type *);
/* create and returns a pointer to a new keymap named p1 created by copying
* keymap p2. If p2 is NULL, it is up to the calling routine to initialize
* the keymap.
*/
extern char *SLang_make_keystring(unsigned char *);
extern SLang_Key_Type *SLang_do_key(SLKeyMap_List_Type *, int (*)(void));
/* read a key using keymap p1 with getkey function p2 */
extern
#ifdef SLKEYMAP_OBSOLETE
VOID_STAR
#else
FVOID_STAR
#endif
SLang_find_key_function(char *, SLKeyMap_List_Type *);
extern SLKeyMap_List_Type *SLang_find_keymap(char *);
extern int SLang_Last_Key_Char;
extern int SLang_Key_TimeOut_Flag;
/*}}}*/
/*{{{ SLang Readline Interface */
typedef struct SLang_Read_Line_Type
{
struct SLang_Read_Line_Type *prev, *next;
unsigned char *buf;
int buf_len; /* number of chars in the buffer */
int num; /* num and misc are application specific*/
int misc;
} SLang_Read_Line_Type;
/* Maximum size of display */
#define SLRL_DISPLAY_BUFFER_SIZE 256
typedef struct
{
SLang_Read_Line_Type *root, *tail, *last;
unsigned char *buf; /* edit buffer */
int buf_len; /* sizeof buffer */
int point; /* current editing point */
int tab; /* tab width */
int len; /* current line size */
/* display variables */
int edit_width; /* length of display field */
int curs_pos; /* current column */
int start_column; /* column offset of display */
int dhscroll; /* amount to use for horiz scroll */
char *prompt;
FVOID_STAR last_fun; /* last function executed by rl */
/* These two contain an image of what is on the display */
unsigned char upd_buf1[SLRL_DISPLAY_BUFFER_SIZE];
unsigned char upd_buf2[SLRL_DISPLAY_BUFFER_SIZE];
unsigned char *old_upd, *new_upd; /* pointers to previous two buffers */
int new_upd_len, old_upd_len; /* length of output buffers */
SLKeyMap_List_Type *keymap;
/* tty variables */
unsigned int flags; /* */
#define SL_RLINE_NO_ECHO 1
#define SL_RLINE_USE_ANSI 2
unsigned int (*getkey)(void); /* getkey function -- required */
void (*tt_goto_column)(int);
void (*tt_insert)(char);
void (*update_hook)(unsigned char *, int, int);
/* The update hook is called with a pointer to a buffer p1 that contains
* an image of what the update hook is suppoed to produce. The length
* of the buffer is p2 and after the update, the cursor is to be placed
* in column p3.
*/
} SLang_RLine_Info_Type;
extern int SLang_RL_EOF_Char;
extern SLang_Read_Line_Type * SLang_rline_save_line (SLang_RLine_Info_Type *);
extern int SLang_init_readline (SLang_RLine_Info_Type *);
extern int SLang_read_line (SLang_RLine_Info_Type *);
extern int SLang_rline_insert (char *);
extern void SLrline_redraw (SLang_RLine_Info_Type *);
extern int SLang_Rline_Quit;
/*}}}*/
/*{{{ Low Level Screen Output Interface */
extern unsigned long SLtt_Num_Chars_Output;
extern int SLtt_Baud_Rate;
typedef unsigned long SLtt_Char_Type;
#define SLTT_BOLD_MASK 0x01000000
#define SLTT_BLINK_MASK 0x02000000
#define SLTT_ULINE_MASK 0x04000000
#define SLTT_REV_MASK 0x08000000
#define SLTT_ALTC_MASK 0x10000000
extern int SLtt_Screen_Rows;
extern int SLtt_Screen_Cols;
extern int SLtt_Term_Cannot_Insert;
extern int SLtt_Term_Cannot_Scroll;
extern int SLtt_Use_Ansi_Colors;
extern int SLtt_Ignore_Beep;
#if defined(REAL_UNIX_SYSTEM)
extern int SLtt_Force_Keypad_Init;
#endif
#ifndef __GO32__
#if defined(VMS) || defined(REAL_UNIX_SYSTEM)
extern int SLtt_Blink_Mode;
extern int SLtt_Use_Blink_For_ACS;
extern int SLtt_Newline_Ok;
extern int SLtt_Has_Alt_Charset;
extern int SLtt_Has_Status_Line; /* if 0, NO. If > 0, YES, IF -1, ?? */
# ifndef VMS
extern int SLtt_Try_Termcap;
# endif
#endif
#endif
#ifdef msdos
extern int SLtt_Msdos_Cheap_Video;
#endif
extern int SLtt_flush_output (void);
extern void SLtt_set_scroll_region(int, int);
extern void SLtt_reset_scroll_region(void);
extern void SLtt_reverse_video (int);
extern void SLtt_bold_video (void);
extern void SLtt_begin_insert(void);
extern void SLtt_end_insert(void);
extern void SLtt_del_eol(void);
extern void SLtt_goto_rc (int, int);
extern void SLtt_delete_nlines(int);
extern void SLtt_delete_char(void);
extern void SLtt_erase_line(void);
extern void SLtt_normal_video(void);
extern void SLtt_cls(void);
extern void SLtt_beep(void);
extern void SLtt_reverse_index(int);
extern void SLtt_smart_puts(unsigned short *, unsigned short *, int, int);
extern void SLtt_write_string (char *);
extern void SLtt_putchar(char);
extern void SLtt_init_video (void);
extern void SLtt_reset_video (void);
extern void SLtt_get_terminfo(void);
extern void SLtt_get_screen_size (void);
extern int SLtt_set_cursor_visibility (int);
#if defined(VMS) || defined(REAL_UNIX_SYSTEM)
extern void SLtt_enable_cursor_keys(void);
extern void SLtt_set_term_vtxxx(int *);
extern void SLtt_set_color_esc (int, char *);
extern void SLtt_wide_width(void);
extern void SLtt_narrow_width(void);
extern int SLtt_set_mouse_mode (int, int);
extern void SLtt_set_alt_char_set (int);
extern int SLtt_write_to_status_line (char *, int);
extern void SLtt_disable_status_line (void);
# ifdef REAL_UNIX_SYSTEM
extern char *SLtt_tgetstr (char *);
extern int SLtt_tgetnum (char *);
extern int SLtt_tgetflag (char *);
extern char *SLtt_tigetent (char *);
extern char *SLtt_tigetstr (char *, char **);
extern int SLtt_tigetnum (char *, char **);
# endif
#endif
extern SLtt_Char_Type SLtt_get_color_object (int);
extern void SLtt_set_color_object (int, SLtt_Char_Type);
extern void SLtt_set_color (int, char *, char *, char *);
extern void SLtt_set_mono (int, char *, SLtt_Char_Type);
extern void SLtt_add_color_attribute (int, SLtt_Char_Type);
extern void SLtt_set_color_fgbg (int, SLtt_Char_Type, SLtt_Char_Type);
/*}}}*/
/*{{{ SLang Preprocessor Interface */
typedef struct
{
int this_level;
int exec_level;
int prev_exec_level;
char preprocess_char;
char comment_char;
unsigned char flags;
#define SLPREP_BLANK_LINES_OK 1
#define SLPREP_COMMENT_LINES_OK 2
}
SLPreprocess_Type;
extern int SLprep_open_prep (SLPreprocess_Type *);
extern void SLprep_close_prep (SLPreprocess_Type *);
extern int SLprep_line_ok (char *, SLPreprocess_Type *);
extern int SLdefine_for_ifdef (char *);
/* Adds a string to the SLang #ifdef preparsing defines. SLang already
defines MSDOS, UNIX, and VMS on the appropriate system. */
extern int (*SLprep_exists_hook) (char *, char);
/*}}}*/
/*{{{ SLsmg Screen Management Functions */
#include <stdarg.h>
extern void SLsmg_fill_region (int, int, int, int, unsigned char);
#ifndef pc_system
extern void SLsmg_set_char_set (int);
extern int SLsmg_Scroll_Hash_Border;
#endif
extern void SLsmg_suspend_smg (void);
extern void SLsmg_resume_smg (void);
extern void SLsmg_erase_eol (void);
extern void SLsmg_gotorc (int, int);
extern void SLsmg_erase_eos (void);
extern void SLsmg_reverse_video (void);
extern void SLsmg_set_color (int);
extern void SLsmg_normal_video (void);
extern void SLsmg_printf (char *, ...);
extern void SLsmg_vprintf (char *, va_list);
extern void SLsmg_write_string (char *);
extern void SLsmg_write_nstring (char *, int);
extern void SLsmg_write_char (char);
extern void SLsmg_write_nchars (char *, int);
extern void SLsmg_write_wrapped_string (char *, int, int, int, int, int);
extern void SLsmg_cls (void);
extern void SLsmg_refresh (void);
extern void SLsmg_touch_lines (int, int);
extern int SLsmg_init_smg (void);
extern void SLsmg_reset_smg (void);
extern unsigned short SLsmg_char_at(void);
extern void SLsmg_set_screen_start (int *, int *);
extern void SLsmg_draw_hline (int);
extern void SLsmg_draw_vline (int);
extern void SLsmg_draw_object (int, int, unsigned char);
extern void SLsmg_draw_box (int, int, int, int);
extern int SLsmg_get_column(void);
extern int SLsmg_get_row(void);
extern void SLsmg_forward (int);
extern void SLsmg_write_color_chars (unsigned short *, unsigned int);
extern unsigned int SLsmg_read_raw (unsigned short *, unsigned int);
extern unsigned int SLsmg_write_raw (unsigned short *, unsigned int);
extern int SLsmg_Display_Eight_Bit;
extern int SLsmg_Tab_Width;
extern int SLsmg_Newline_Moves;
extern int SLsmg_Backspace_Moves;
#ifdef pc_system
# define SLSMG_HLINE_CHAR 0xC4
# define SLSMG_VLINE_CHAR 0xB3
# define SLSMG_ULCORN_CHAR 0xDA
# define SLSMG_URCORN_CHAR 0xBF
# define SLSMG_LLCORN_CHAR 0xC0
# define SLSMG_LRCORN_CHAR 0xD9
# define SLSMG_RTEE_CHAR 0xB4
# define SLSMG_LTEE_CHAR 0xC3
# define SLSMG_UTEE_CHAR 0xC2
# define SLSMG_DTEE_CHAR 0xC1
# define SLSMG_PLUS_CHAR 0xC5
/* There are several to choose from: 0xB0, 0xB1, and 0xB2 */
# define SLSMG_CKBRD_CHAR 0xB0
#else
# define SLSMG_HLINE_CHAR 'q'
# define SLSMG_VLINE_CHAR 'x'
# define SLSMG_ULCORN_CHAR 'l'
# define SLSMG_URCORN_CHAR 'k'
# define SLSMG_LLCORN_CHAR 'm'
# define SLSMG_LRCORN_CHAR 'j'
# define SLSMG_CKBRD_CHAR 'a'
# define SLSMG_RTEE_CHAR 'u'
# define SLSMG_LTEE_CHAR 't'
# define SLSMG_UTEE_CHAR 'w'
# define SLSMG_DTEE_CHAR 'v'
# define SLSMG_PLUS_CHAR 'n'
#endif
#ifndef pc_system
# define SLSMG_COLOR_BLACK 0x000000
# define SLSMG_COLOR_RED 0x000001
# define SLSMG_COLOR_GREEN 0x000002
# define SLSMG_COLOR_BROWN 0x000003
# define SLSMG_COLOR_BLUE 0x000004
# define SLSMG_COLOR_MAGENTA 0x000005
# define SLSMG_COLOR_CYAN 0x000006
# define SLSMG_COLOR_LGRAY 0x000007
# define SLSMG_COLOR_GRAY 0x000008
# define SLSMG_COLOR_BRIGHT_RED 0x000009
# define SLSMG_COLOR_BRIGHT_GREEN 0x00000A
# define SLSMG_COLOR_BRIGHT_BROWN 0x00000B
# define SLSMG_COLOR_BRIGHT_BLUE 0x00000C
# define SLSMG_COLOR_BRIGHT_CYAN 0x00000D
# define SLSMG_COLOR_BRIGHT_MAGENTA 0x00000E
# define SLSMG_COLOR_BRIGHT_WHITE 0x00000F
#endif
/*}}}*/
/*{{{ SLang Keypad Interface */
#define SL_KEY_ERR 0xFFFF
#define SL_KEY_UP 0x101
#define SL_KEY_DOWN 0x102
#define SL_KEY_LEFT 0x103
#define SL_KEY_RIGHT 0x104
#define SL_KEY_PPAGE 0x105
#define SL_KEY_NPAGE 0x106
#define SL_KEY_HOME 0x107
#define SL_KEY_END 0x108
#define SL_KEY_A1 0x109
#define SL_KEY_A3 0x10A
#define SL_KEY_B2 0x10B
#define SL_KEY_C1 0x10C
#define SL_KEY_C3 0x10D
#define SL_KEY_REDO 0x10E
#define SL_KEY_UNDO 0x10F
#define SL_KEY_BACKSPACE 0x110
#define SL_KEY_ENTER 0x111
#define SL_KEY_IC 0x112
#define SL_KEY_DELETE 0x113
#define SL_KEY_F0 0x200
#define SL_KEY_F(X) (SL_KEY_F0 + X)
/* I do not intend to use keysymps > 0x1000. Applications can use those. */
/* Returns 0 upon success or -1 upon error. */
int SLkp_define_keysym (char *, unsigned int);
/* This function must be called AFTER SLtt_get_terminfo and not before. */
extern int SLkp_init (void);
/* This function uses SLang_getkey and assumes that what ever initialization
* is required for SLang_getkey has been performed.
*/
extern int SLkp_getkey (void);
/*}}}*/
/*{{{ SLang Scroll Interface */
typedef struct _SLscroll_Type
{
struct _SLscroll_Type *next;
struct _SLscroll_Type *prev;
unsigned int flags;
}
SLscroll_Type;
typedef struct
{
unsigned int flags;
SLscroll_Type *top_window_line; /* list element at top of window */
SLscroll_Type *bot_window_line; /* list element at bottom of window */
SLscroll_Type *current_line; /* current list element */
SLscroll_Type *lines; /* first list element */
unsigned int nrows; /* number of rows in window */
unsigned int hidden_mask; /* applied to flags in SLscroll_Type */
unsigned int line_num; /* current line number (visible) */
unsigned int num_lines; /* total number of lines (visible) */
unsigned int window_row; /* row of current_line in window */
unsigned int border; /* number of rows that form scroll border */
int cannot_scroll; /* should window scroll or recenter */
}
SLscroll_Window_Type;
extern int SLscroll_find_top (SLscroll_Window_Type *);
extern int SLscroll_find_line_num (SLscroll_Window_Type *);
extern unsigned int SLscroll_next_n (SLscroll_Window_Type *, unsigned int);
extern unsigned int SLscroll_prev_n (SLscroll_Window_Type *, unsigned int);
extern int SLscroll_pageup (SLscroll_Window_Type *);
extern int SLscroll_pagedown (SLscroll_Window_Type *);
/*}}}*/
/*{{{ Signal Routines */
typedef void SLSig_Fun_Type (int);
extern SLSig_Fun_Type *SLsignal (int, SLSig_Fun_Type *);
extern SLSig_Fun_Type *SLsignal_intr (int, SLSig_Fun_Type *);
#ifndef pc_system
extern int SLsig_block_signals (void);
extern int SLsig_unblock_signals (void);
#endif
/*}}}*/
/*{{{ Interpreter Macro Definitions */
/* This value is a main_type just like the other main_types defined
* near the definition of SLang_Name_Type. Applications should avoid using
* this so if you do not understands its role, do not use it.
*/
#define SLANG_DATA 0x30 /* real objects which may be destroyed */
/* Subtypes */
/* The definitions here are for objects that may be on the run-time stack.
* They are actually sub_types of literal and data main_types.
*/
#define VOID_TYPE 1
#define INT_TYPE 2
#ifdef FLOAT_TYPE
# undef FLOAT_TYPE
# define FLOAT_TYPE 3
#endif
#define CHAR_TYPE 4
#define INTP_TYPE 5
/* An object of INTP_TYPE should never really occur on the stack. Rather,
* the integer to which it refers will be there instead. It is defined here
* because it is a valid type for MAKE_VARIABLE.
*/
#define SLANG_OBJ_TYPE 6
/* SLANG_OBJ_TYPE refers to an object on the stack that is a pointer to
* some other object.
*/
#if 0
/* This is not ready yet. */
# define SLANG_NOOP 9
#endif
/* Everything above string should correspond to a pointer in the object
* structure. See do_binary (slang.c) for exploitation of this fact.
*/
#define STRING_TYPE 10
/* Array type MUST be the smallest number for SLuser_Object_Type structs */
#define ARRAY_TYPE 20
/* I am reserving values greater than or equal to user applications. The
* first 99 are used for S-Lang.
*/
/* Binary and Unary Subtypes */
/* Since the application can define new types and can overload the binary
* and unary operators, these definitions must be present in this file.
*/
#define SLANG_PLUS 1
#define SLANG_MINUS 2
#define SLANG_TIMES 3
#define SLANG_DIVIDE 4
#define SLANG_EQ 5
#define SLANG_NE 6
#define SLANG_GT 7
#define SLANG_GE 8
#define SLANG_LT 9
#define SLANG_LE 10
/* UNARY subtypes (may be overloaded) */
#define SLANG_ABS 11
#define SLANG_SIGN 12
#define SLANG_SQR 13
#define SLANG_MUL2 14
#define SLANG_CHS 15
/* error codes, severe errors are less than 0 */
#define SL_INVALID_PARM -6
#define SL_MALLOC_ERROR -5
#define INTERNAL_ERROR -4
#define UNKNOWN_ERROR -3
#define STACK_OVERFLOW -1
#define STACK_UNDERFLOW -2
#define INTRINSIC_ERROR 1
/* Intrinsic error is an error generated by intrinsic functions */
#define USER_BREAK 2
#define UNDEFINED_NAME 3
#define SYNTAX_ERROR 4
#define DUPLICATE_DEFINITION 5
#define TYPE_MISMATCH 6
#define READONLY_ERROR 7
#define DIVIDE_ERROR 8
/* object could not be opened */
#define SL_OBJ_NOPEN 9
/* unknown object */
#define SL_OBJ_UNKNOWN 10
extern char *SLang_Error_Message;
extern void SLadd_name(char *, long, unsigned char, unsigned char);
extern void SLadd_at_handler (long *, char *);
#define SLANG_MAKE_ARGS(out, in) ((unsigned char)(out) | ((unsigned short) (in) << 4))
#ifdef SLANG_STATS
#define MAKE_INTRINSIC(n, f, out, in) \
{0, n, (out | (in << 4)), SLANG_INTRINSIC, (long) f}
#define MAKE_VARIABLE(n, v, t, r) \
{0, n, t, (SLANG_IVARIABLE + r), (long) v}
#else
#define MAKE_INTRINSIC(n, f, out, in) \
{n, (out | (in << 4)), SLANG_INTRINSIC, (long) f}
#define MAKE_VARIABLE(n, v, t, r) \
{n, t, (SLANG_IVARIABLE + r), (long) v}
#endif
#define SLANG_END_TABLE MAKE_INTRINSIC("", 0, 0, 0)
/*}}}*/
/*{{{ Upper/Lowercase Functions */
extern void SLang_define_case(int *, int *);
extern void SLang_init_case_tables (void);
extern unsigned char Chg_UCase_Lut[256];
extern unsigned char Chg_LCase_Lut[256];
#define UPPER_CASE(x) (Chg_UCase_Lut[(unsigned char) (x)])
#define LOWER_CASE(x) (Chg_LCase_Lut[(unsigned char) (x)])
#define CHANGE_CASE(x) (((x) == Chg_LCase_Lut[(unsigned char) (x)]) ?\
Chg_UCase_Lut[(unsigned char) (x)] : Chg_LCase_Lut[(unsigned char) (x)])
/*}}}*/
/*{{{ Regular Expression Interface */
typedef struct
{
unsigned char *pat; /* regular expression pattern */
unsigned char *buf; /* buffer for compiled regexp */
unsigned int buf_len; /* length of buffer */
int case_sensitive; /* 1 if match is case sensitive */
int must_match; /* 1 if line must contain substring */
int must_match_bol; /* true if it must match beginning of line */
unsigned char must_match_str[16]; /* 15 char null term substring */
int osearch; /* 1 if ordinary search suffices */
unsigned int min_length; /* minimum length the match must be */
int beg_matches[10]; /* offset of start of \( */
unsigned int end_matches[10]; /* length of nth submatch
* Note that the entire match corresponds
* to \0
*/
int offset; /* offset to be added to beg_matches */
} SLRegexp_Type;
extern unsigned char *SLang_regexp_match(unsigned char *,
unsigned int,
SLRegexp_Type *);
extern int SLang_regexp_compile (SLRegexp_Type *);
extern char *SLregexp_quote_string (char *, char *, unsigned int);
/*}}}*/
/*{{{ SLang Command Interface */
#define SLCMD_MAX_ARGS 10
struct _SLcmd_Cmd_Type; /* Pre-declaration is needed below */
typedef struct
{
struct _SLcmd_Cmd_Type *table;
int argc;
char *string_args[SLCMD_MAX_ARGS];
int int_args[SLCMD_MAX_ARGS];
float64 float_args[SLCMD_MAX_ARGS];
unsigned char arg_type[SLCMD_MAX_ARGS];
} SLcmd_Cmd_Table_Type;
typedef struct _SLcmd_Cmd_Type
{
int (*cmdfun)(int, SLcmd_Cmd_Table_Type *);
char cmd[32];
char arg_type[SLCMD_MAX_ARGS];
} SLcmd_Cmd_Type;
extern int SLcmd_execute_string (char *, SLcmd_Cmd_Table_Type *);
/*}}}*/
/*{{{ SLang Search Interface */
typedef struct
{
int cs; /* case sensitive */
unsigned char key[256];
int ind[256];
int key_len;
int dir;
} SLsearch_Type;
extern int SLsearch_init (char *, int, int, SLsearch_Type *);
/* This routine must first be called before any search can take place.
* The second parameter specifies the direction of the search: greater than
* zero for a forwrd search and less than zero for a backward search. The
* third parameter specifies whether the search is case sensitive or not.
* The last parameter is a pointer to a structure that is filled by this
* function and it is this structure that must be passed to SLsearch.
*/
unsigned char *SLsearch (unsigned char *, unsigned char *, SLsearch_Type *);
/* To use this routine, you must first call 'SLsearch_init'. Then the first
* two parameters p1 and p2 serve to define the region over which the search
* is to take place. The third parameter is the structure that was previously
* initialized by SLsearch_init.
*
* The routine returns a pointer to the match if found otherwise it returns
* NULL.
*/
/*}}}*/
#if 0
{
#endif
#ifdef __cplusplus
}
#endif
#endif /* _DAVIS_SLANG_H_ */
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