#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 # endif typedef void *VOID_STAR; # define VOID void # include #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 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_ */