mirror of https://github.com/MidnightCommander/mc
1291 lines
40 KiB
C
1291 lines
40 KiB
C
#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
|
|
|
|
#ifdef HAVE_SYSTEM_SLANG
|
|
#error "This file must not be used with system installed S-Lang library"
|
|
#endif
|
|
|
|
/*{{{ 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__
|
|
# define NEEDS_LOCAL_DIRENT_H
|
|
# 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_ */
|