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|
/*
* SHPRNT.C - C and Scheme Primitive Output Routines
*
* Source Version: 4.0
* Software Release #92-0043
*
*/
#include "cpyright.h"
#include "scheme.h"
object
*SS_histdev,
*SS_outdev;
char
SS_prompt[] = "Scheme-> ",
SS_ans_prompt[] = "(): ";
static char
*_sp_bf;
int
Disp_flag = FALSE;
PFVoid
SS_pr_ch_out;
static void
SC_DECLARE(_SS_xprintf, (object *str, object *argl));
static int
SC_DECLARE(_SS_push_chars, (FILE *fp, char *fmt, ...));
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* _SS_PRINT - takes an object, produces a printable representation, and
* - prints it
*/
object *_SS_print(obj, begin, end, strm)
object *obj;
char *begin, *end;
object *strm;
{FILE *str;
str = SS_OUTSTREAM(strm);
PRINT(str, "%s", begin);
SS_OBJECT_PRINT(obj, strm);
PRINT(str, "%s", end);
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/* DPRINT - an easy to use debug time object printer */
void dprint(obj)
object *obj;
{_SS_print(obj, "", "\n", SS_outdev);
return;}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_WRITE - invoke at Scheme level the C level print function */
object *SS_write(obj)
object *obj;
{Register object *str;
str = SS_cdr(obj);
obj = SS_car(obj);
if (SS_nullobjp(str))
_SS_print(obj, "", "", SS_outdev);
else if (SS_consp(str))
{str = SS_car(str);
if (SS_outportp(str))
_SS_print(obj, "", "", str);}
else
SS_error("LAST ARGUMENT NOT OUTPUT-PORT - WRITE", str);
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_SPRINTF - a C type sprintf for SCHEME */
object *SS_sprintf(argl)
object *argl;
{PFfprintf pr;
pr = putln;
putln = (PFfprintf) _SS_push_chars;
_SS_xprintf(SS_outdev, argl);
putln = pr;
return(SS_mk_string(_sp_bf));}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_FPRINTF - a C type fprintf for SCHEME */
object *SS_fprintf(argl)
object *argl;
{object *str;
str = SS_car(argl);
argl = SS_cdr(argl);
if (SS_nullobjp(str))
str = SS_outdev;
_SS_xprintf(str, argl);
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* _SS_XPRINTF - interpret C style format specifcation and get values
* - from arg list to fulfill them
* - return a string with the result
*/
static void _SS_xprintf(str, argl)
object *str;
object *argl;
{Register object *obj, *format;
char forms[MAXLINE], *fmt, *le, *lb, local[MAXLINE], *pt;
int c;
FILE *stream;
if (!SS_outportp(str))
SS_error("BAD PORT - _SS_XPRINTF", str);
stream = SS_OUTSTREAM(str);
format = SS_car(argl);
if (!SS_stringp(format))
SS_error("BAD FORMAT - _SS_XPRINTF", format);
strcpy(forms, SS_STRING_TEXT(format));
fmt = forms;
_sp_bf = NULL;
while (TRUE)
{for (pt = local; (((c = *fmt++) != '%') && (c != '\0')); pt++)
{if (c == '\\')
{switch (c = *fmt++)
{case 't' : *pt = '\t';
break;
case 'r' : *pt = '\r';
break;
case 'n' : *pt = '\n';
break;
default : *pt = c;
break;};}
else
*pt = c;};
*pt = '\0';
PRINT(stream, local);
if (c == '\0')
break;
/* copy from the % to the type specifier to get the format descriptor for
* this item
*/
le = strpbrk(fmt, "sdouxXfeEgGc%");
local[0] = '%';
for (lb = &local[1]; le != fmt; *lb++ = *fmt++);
fmt++;
*lb++ = *le;
*lb = '\0';
/* get the object now */
if (*le != '%')
{if (SS_nullobjp(argl))
return;
argl = SS_cdr(argl);
if (SS_nullobjp(argl))
return;
obj = SS_car(argl);};
/* jump on the type spec to pull the correct arg type off the stack */
switch (*le)
{case 's' :
Disp_flag = TRUE;
_SS_print(obj, "", "", str);
Disp_flag = FALSE;
break;
case 'c' :
if (SS_integerp(obj))
PRINT(stream, local, SS_INTEGER_VALUE(obj));
else
{Disp_flag = TRUE;
_SS_print(obj, "", "", str);
Disp_flag = FALSE;};
break;
case 'i' :
case 'X' :
case 'x' :
case 'o' :
case 'd' :
case 'u' :
if (!SS_integerp(obj))
SS_error("NON-INTEGER FOR INTEGER FIELD - _SS_XPRINTF",
obj);
PRINT(stream, local, SS_INTEGER_VALUE(obj));
break;
case 'f' :
case 'e' :
case 'E' :
case 'g' :
case 'G' :
if (!SS_floatp(obj))
SS_error("NON-FLOAT FOR REAL FIELD - _SS_XPRINTF",
obj);
PRINT(stream, local, SS_FLOAT_VALUE(obj));
break;
case '%' :
PRINT(stream, "%%");
break;};};
return;}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* _SS_PUSH_CHARS - do an sprintf on the tailing arg and push
* - them onto the first arg resizing if neceassary
*/
#ifdef PCC
static int _SS_push_chars(fp, fmt, va_alist)
FILE *fp;
char *fmt;
va_dcl
#endif
#ifdef ANSI
static int _SS_push_chars(FILE *fp, char *fmt, ...)
#endif
{char bf[MAX_LEX_BUFFER];
int ns, nb;
if (fp != NULL)
{SC_VA_START(fmt);
SC_VSPRINTF(bf, fmt);
SC_VA_END;
if (_sp_bf == NULL)
_sp_bf = FMAKE_N(char, MAXLINE, "_SS_PUSH_CHARS:_sp_bf");
ns = strlen(_sp_bf);
nb = strlen(bf);
if ((ns + nb + 2) >= SC_arrlen(_sp_bf))
REMAKE_N(_sp_bf, char, ns+nb+MAXLINE);
strcat(_sp_bf, bf);};
return(FALSE);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_DISPLAY - the human readable print function in Scheme */
object *SS_display(obj)
object *obj;
{Disp_flag = TRUE;
SS_write(obj);
Disp_flag = FALSE;
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_PRINT_TOGGLE - toggle printing of values in Scheme */
object *SS_print_toggle()
{SS_print_flag = !SS_print_flag;
if (SS_print_flag)
return(SS_t);
else
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_STATS_TOGGLE - toggle printing of statistics in Scheme */
object *SS_stats_toggle()
{SS_stat_flag = !SS_stat_flag;
if (SS_stat_flag)
return(SS_t);
else
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_TRANS_ON - turn on a transcript of the Scheme session */
object *SS_trans_on(obj)
object *obj;
{FILE *str;
Register char *s;
if (!SS_nullobjp(SS_histdev))
SS_error("TRANSCRIPT ALREADY ACTIVE - TRANSCRIPT-ON", obj);
if (SS_stringp(obj))
s = SS_STRING_TEXT(obj);
else if (SS_variablep(obj))
s = SS_VARIABLE_NAME(obj);
else
SS_error("BAD STRING TO TRANSCRIPT-ON", obj);
str = io_open(s, "a");
if (str == NULL)
SS_error("CAN'T OPEN FILE - TRANSCRIPT-ON", obj);
SS_histdev = SS_mk_outport(str);
SS_hist_flag = ALL;
return(SS_t);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_TRANS_OFF - turn off the transcript of the Scheme session */
object *SS_trans_off()
{if (SS_nullobjp(SS_histdev))
return(SS_f);
io_close(SS_OUTSTREAM(SS_histdev));
SS_OBJECT_FREE(SS_histdev);
SS_histdev = SS_null;
SS_hist_flag = FALSE;
return(SS_t);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_OPN_OUT - open-output-file in Scheme */
object *SS_opn_out(obj)
object *obj;
{FILE *str;
Register char *s;
if (SS_stringp(obj))
s = SS_STRING_TEXT(obj);
else if (SS_variablep(obj))
s = SS_VARIABLE_NAME(obj);
else
SS_error("BAD STRING TO OPEN-OUTPUT-FILE", obj);
str = io_open(s, "w");
if (str == NULL)
SS_error("CAN'T OPEN FILE - OPEN-OUTPUT-FILE", obj);
return(SS_mk_outport(str));}
/*--------------------------------------------------------------------------*/
#ifdef LARGE
/*--------------------------------------------------------------------------*/
/* SS_CALL_OF - call-with-output-file in Scheme */
object *SS_call_of(argl)
object *argl;
{FILE *str;
char *s;
object *obj, *old_outdev, *ret;
obj = SS_car(argl);
if (SS_stringp(obj))
s = SS_STRING_TEXT(obj);
else if (SS_variablep(obj))
s = SS_VARIABLE_NAME(obj);
else
SS_error("BAD STRING TO OPEN-OUTPUT-FILE", obj);
str = io_open(s, BINARY_MODE_W);
if (str == NULL)
SS_error("CAN'T OPEN FILE - OPEN-OUTPUT-FILE", obj);
old_outdev = SS_outdev;
SS_outdev = SS_mk_outport(str);
ret = SS_exp_eval(SS_cdr(argl));
SS_cls_out(SS_outdev);
SS_outdev = old_outdev;
return(ret);}
/*--------------------------------------------------------------------------*/
#endif
/*--------------------------------------------------------------------------*/
/* SS_CLS_OUT - close-output-file in Scheme */
object *SS_cls_out(obj)
object *obj;
{if (!SS_outportp(obj))
SS_error("BAD OUTPUT-PORT TO CLOSE-OUTPUT-FILE", obj);
io_close(SS_OUTSTREAM(obj));
return(SS_t);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_OPORTP - output-port? at Scheme level */
object *SS_oportp(obj)
object *obj;
{return(SS_outportp(obj) ? SS_t : SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_WR_PROC - print a procedure */
void SS_wr_proc(obj, strm)
object *obj, *strm;
{FILE *str;
char *s;
str = SS_OUTSTREAM(strm);
s = SS_PROCEDURE_NAME(obj);
if (s != NULL)
{switch (SS_PROCEDURE_TYPE(obj))
{case SS_ESC_PROC : PRINT(str, "%s(cont=%d, stack=%d)",
s,
SS_ESCAPE_CONTINUATION(obj),
SS_ESCAPE_STACK(obj));
break;
default : PRINT(str, "%s", s);
break;};};
return;}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_BANNER - print the banner */
object *SS_banner(obj)
object *obj;
{char *s;
static int override = 1;
SS_args(obj,
SC_STRING_I, &s,
SC_INTEGER_I, &override,
0);
if (override)
{PRINT(stdout, "\n\t%s - %s\n", s, VERSION);
override = 0;};
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_DESCRIBE - print out the documentation on the function */
object *SS_describe(obj)
object *obj;
{Register object *strm;
strm = SS_cdr(obj);
obj = SS_car(obj);
if (SS_nullobjp(strm))
strm = SS_outdev;
else if (SS_consp(strm))
{strm = SS_car(strm);
if (!SS_outportp(strm))
SS_error("LAST ARGUMENT NOT OUTPUT-PORT - DESCRIBE", strm);}
else
SS_error("LAST ARGUMENT NOT OUTPUT-PORT - DESCRIBE", strm);
if (!SS_prim_des(strm, obj))
SS_error("DESCRIPTIONS ONLY AVAIBLE FOR PROCEDURES", obj);
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_PRIM_DES - primitive part of describe facility */
int SS_prim_des(strm, obj)
object *strm, *obj;
{char *s;
Register object *desc;
FILE *str;
str = SS_OUTSTREAM(strm);
if (!SS_procedurep(obj))
{if (SS_variablep(obj))
{desc = SS_lk_var_val(obj, SS_Env);
if (!SS_procedurep(desc))
{PRINT(str, " Variable: %s\n", SS_VARIABLE_NAME(obj));
_SS_print(desc, " Value: ", "\n", strm);
return(TRUE);}
else
obj = desc;}
else
return(FALSE);};
switch (SS_PROCEDURE_TYPE(obj))
{case SS_PROC :
desc = SS_cdr(SS_COMPOUND_PROCEDURE_FUNCTION(obj));
if (SS_stringp(SS_cadr(desc)))
PRINT(str, " %s", SS_STRING_TEXT(SS_cadr(desc)));
else
{desc = SS_mk_cons(obj, desc);
SS_MARK(desc);
PRINT(str, " Compound procedure:\n");
SS_wr_lst(desc, strm);
SS_GC(desc);};
break;
case SS_MACRO :
desc = SS_cdr(SS_COMPOUND_PROCEDURE_FUNCTION(obj));
if (SS_stringp(SS_cadr(desc)))
PRINT(str, " %s", SS_STRING_TEXT(SS_cadr(desc)));
else
{desc = SS_mk_cons(obj, desc);
SS_MARK(desc);
PRINT(str, " Compound macro:\n");
SS_wr_lst(desc, strm);
SS_GC(desc);};
break;
case SS_PR_PROC :
case SS_EE_MACRO :
case SS_UR_MACRO :
case SS_UE_MACRO :
s = SS_PROCEDURE_DOC(obj);
if (s != NULL)
PRINT(str, " %s", s);};
PRINT(str, "\n");
return(TRUE);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_APROPOS - search the hash table for information about the given
* - string
*/
object *SS_apropos(obj)
object *obj;
{Register object *strm;
Register char *token;
FILE *str;
/* SC_banner("APROPOS"); */
strm = SS_cdr(obj);
obj = SS_car(obj);
if (SS_nullobjp(strm))
strm = SS_outdev;
else if (SS_consp(strm))
{strm = SS_car(strm);
if (!SS_outportp(strm))
SS_error("LAST ARGUMENT NOT OUTPUT-PORT - APROPOS", strm);}
else
SS_error("LAST ARGUMENT NOT OUTPUT-PORT - APROPOS", strm);
str = SS_OUTSTREAM(strm);
if (SS_stringp(obj))
token = SS_STRING_TEXT(obj);
else if (SS_variablep(obj))
token = SS_VARIABLE_NAME(obj);
else if (SS_procedurep(obj))
token = SS_PROCEDURE_NAME(obj);
else
SS_error("BAD OBJECT - APROPOS", obj);
PRINT(str, "\nApropos search string: %s\n\n", token);
if (!SS_prim_apr(str, token, SS_symtab))
PRINT(str, "No documentation on %s\n\n", token);
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_PRIM_APR - finds all commands which contain the substring s in their
* - name or description
*/
int SS_prim_apr(str, s, tab)
FILE *str;
char *s;
HASHTAB *tab;
{hashel *np, **tb;
object *op, *obj;
Register int i, sz, flag, nlp, nmore;
Register char c;
char bf[10];
/* if the hash table has undocumented objects then leave */
if (!tab->docp)
return(FALSE);
flag = 0;
nmore = 0;
nlp = SS_lines_page;
if (nlp == 0)
nlp = INT_MAX;
sz = tab->size;
tb = tab->table;
for (i = 0; i < sz; i++)
for (np = tb[i]; np != NULL; np = np->next)
{if (nmore > nlp)
{PRINT(str, "More ... (n to stop)");
GETLN(bf, 10, stdin);
if (bf[0] == 'n')
return(flag);
nmore = 0;};
obj = (object *) np->def;
if (SS_variablep(obj))
{op = SS_VARIABLE_VALUE(obj);
if (SS_procedurep(op))
{c = SS_PROCEDURE_TYPE(op);
if ((c == SS_PR_PROC) || (c == SS_UR_MACRO) ||
(c == SS_UE_MACRO) || (c == SS_EE_MACRO))
if ((SC_strstri(SS_PROCEDURE_DOC(op), s) != NULL) ||
(SC_strstri(SS_PROCEDURE_NAME(op), s) != NULL))
{PRINT(str, "%s :\n%s\n\n",
SS_PROCEDURE_NAME(op), SS_PROCEDURE_DOC(op));
nmore = nmore + 3;
flag = 1;};}
else if (SC_strstri(np->name, s) != NULL)
{PRINT(str, "%s : Variable\n\n", s);
nmore = nmore + 2;
flag = 1;};};};
return(flag);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_WR_LST - print a list */
void SS_wr_lst(obj, strm)
object *obj;
object *strm;
{FILE *str;
Register object *cd;
str = SS_OUTSTREAM(strm);
PRINT(str, "(");
while (TRUE)
{_SS_print(SS_car(obj), "", "", strm);
if (SS_nullobjp(cd = SS_cdr(obj)))
{PRINT(str, ")");
break;}
else if (SS_consp(cd))
{obj = cd;
PRINT(str, " ");}
else
{_SS_print(cd, " . ", ")", strm);
break;};};
return;}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_WR_ATM - print an atom or string */
void SS_wr_atm(obj, strm)
object *obj, *strm;
{FILE *str;
str = SS_OUTSTREAM(strm);
switch (SS_OBJECT_TYPE(obj))
{case SC_INTEGER_I : PRINT(str, "%ld", SS_INTEGER_VALUE(obj));
break;
case SC_FLOAT_I : PRINT(str, "%g", SS_FLOAT_VALUE(obj));
break;
#ifdef LARGE
case CHAR_OBJ : PRINT(str, "%c", SS_CHARACTER_VALUE(obj));
break;
#endif
case SC_STRING_I : if (Disp_flag)
PRINT(str, "%s", SS_STRING_TEXT(obj));
else
PRINT(str, "\"%s\"", SS_STRING_TEXT(obj));
break;
case VARIABLE : PRINT(str, "%s", SS_VARIABLE_NAME(obj));
break;
case NULL_OBJ : PRINT(str, "()");
break;
case EOF_OBJ :
case BOOLEAN : PRINT(str, "%s", SS_BOOLEAN_NAME(obj));
break;
default : PRINT(str, "UNKOWN OR NON-ATOMIC OBJECT TYPE");
break;};
return;}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_NEWLINE - Scheme newline function */
object *SS_newline(strm)
object *strm;
{FILE *fp;
if (SS_nullobjp(strm))
{fp = SS_OUTSTREAM(SS_outdev);
if (fp == stdout)
PRINT(fp, "\n");
else
PRINT(fp, "\r\n");}
else if (SS_consp(strm))
{strm = SS_car(strm);
if (SS_outportp(strm))
{fp = SS_OUTSTREAM(strm);
if (fp == stdout)
PRINT(fp, "\n");
else
PRINT(fp, "\r\n");};}
else
SS_error("BAD OUTPUT PORT - NEWLINE", strm);
return(SS_f);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* SS_CURR_OP - current-output-port in Scheme */
object *SS_curr_op()
{return(SS_outdev);}
/*--------------------------------------------------------------------------*/
#ifdef LARGE
/*--------------------------------------------------------------------------*/
/* SS_WR_CHR - write-char for Scheme */
object *SS_wr_chr(argl)
object *argl;
{Register object *str;
str = SS_cdr(argl);
if (!SS_charobjp(argl = SS_car(argl)))
SS_error("BAD CHARACTER - WRITE-CHAR", argl);
if (SS_nullobjp(str))
_SS_print(argl, "", "", SS_outdev);
else if (SS_outportp(str = SS_car(str)))
_SS_print(argl, "", "", str);
else
SS_error("LAST ARGUMENT NOT OUTPUT-PORT - WRITE-CHAR", str);
return(SS_f);}
/*--------------------------------------------------------------------------*/
#endif
/*--------------------------------------------------------------------------*/
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