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/* pe2pl.c - presentation element to presentation list */
/*
* isode/psap/pe2pl.c
*/
/*
* NOTICE
*
* Acquisition, use, and distribution of this module and related
* materials are subject to the restrictions of a license agreement.
* Consult the Preface in the User's Manual for the full terms of
* this agreement.
*
*/
/* Presentation lists are a human-readable, unambiguous way of describing
a presentation element.
SYNTAX: list :: "(" class code arguments ")"
class :: "UNIV" / "APPL" / "CONT" / "PRIV"
code :: name / number
name :: letter (letter / digit / dash)*
number :: "0x" [0-f] [0-f]* /
"0" [0-7] [0-7]* /
[1-9] [0-9]* /
"\"" (IA5 subset)* "\""
arguments:: primitive / constructor
primitive:: number number*
constructor:: list*
NOTE WELL: A single "number" must be representable in no more than
(sizeof (int)) bytes.
*/
/* LINTLIBRARY */
#include <ctype.h>
#include <stdio.h>
#include "psap.h"
static int pe2pl_aux ();
#define bf_write() \
if (ps_write (ps, (PElementData) buffer, (PElementLen) strlen (buffer)) == NOTOK) \
return NOTOK
/* */
int pe2pl (ps, pe)
register PS ps;
register PE pe;
{
int result;
if ((result = pe2pl_aux (ps, pe, 0)) != NOTOK)
result = ps_flush (ps);
return result;
}
/* */
static int pe2pl_aux (ps, pe, level)
register PS ps;
register PE pe;
int level;
{
register int i,
ia5,
ia5ok;
register char *bp;
char buffer[BUFSIZ];
register PE p;
register PElementID id;
register PElementData dp,
ep,
fp,
gp;
(void) sprintf (buffer, "%*s( %s ",
level * 4, "", pe_classlist[pe -> pe_class]);
bf_write ();
switch (pe -> pe_class) {
case PE_CLASS_UNIV:
if ((int)(id = pe -> pe_id) < pe_maxuniv && (bp = pe_univlist[id])) {
if (ps_write (ps, (PElementData) bp, (PElementLen) strlen (bp))
== NOTOK)
return NOTOK;
}
else
goto no_code;
break;
case PE_CLASS_APPL:
if ((int)(id = pe -> pe_id) < pe_maxappl && (bp = pe_applist[id])) {
if (ps_write (ps, (PElementData) bp, (PElementLen) strlen (bp))
== NOTOK)
return NOTOK;
}
else
goto no_code;
case PE_CLASS_PRIV:
if ((int)(id = pe -> pe_id) < pe_maxpriv && (bp = pe_privlist[id])) {
if (ps_write (ps, (PElementData) bp, (PElementLen) strlen (bp))
== NOTOK)
return NOTOK;
} /* else fall */
case PE_CLASS_CONT:
no_code: ;
(void) sprintf (buffer, "0x%x", pe -> pe_id);
bf_write ();
break;
}
level++;
switch (pe -> pe_form) {
case PE_FORM_PRIM:
case PE_FORM_ICONS:
(void) sprintf (buffer, " 0x%x%c",
pe -> pe_len, pe -> pe_len ? '\n' : ' ');
bf_write ();
if (pe -> pe_len) {
ia5ok = 0;
if (pe -> pe_form == PE_FORM_PRIM
&& pe -> pe_class == PE_CLASS_UNIV)
switch (pe -> pe_id) {
case PE_PRIM_OCTS:
case PE_DEFN_IA5S:
case PE_DEFN_NUMS:
case PE_DEFN_PRTS:
case PE_DEFN_T61S:
case PE_DEFN_VTXS:
case PE_DEFN_VISS:
case PE_DEFN_GENT:
case PE_DEFN_UTCT:
case PE_DEFN_GFXS:
case PE_PRIM_ODE:
case PE_DEFN_GENS:
ia5ok = 1;
break;
default:
break;
}
for (ep = (dp = pe -> pe_prim) + pe -> pe_len; dp < ep;) {
i = min (ep - dp, sizeof (int));
if (ia5 = ia5ok) {
for (gp = (fp = dp) + i; fp < gp; fp++) {
switch (*fp) {
case ' ':
continue;
case '"':
break;
default:
if (iscntrl ((u_char) *fp)
|| isspace ((u_char) *fp)
|| (*fp & 0x80))
break;
continue;
}
ia5 = 0;
break;
}
}
(void) sprintf (buffer, ia5 ? "%*s\"" : "%*s0x",
level * 4, "");
bp = buffer + strlen (buffer);
while (i-- > 0) {
(void) sprintf (bp, ia5 ? (i ? "%c" : "%c\"\n")
: (i ? "%02x" : "%02x\n"), *dp++);
bp += strlen (bp);
}
bf_write ();
}
}
else
level = 1;
break;
case PE_FORM_CONS:
if (p = pe -> pe_cons) {
if (ps_write (ps, (PElementData) "\n", (PElementLen) 1)
== NOTOK)
return NOTOK;
for (p = pe -> pe_cons; p; p = p -> pe_next)
if (pe2pl_aux (ps, p, level) == NOTOK)
return NOTOK;
}
else {
if (ps_write (ps, (PElementData) " ", (PElementLen) 1)
== NOTOK)
return NOTOK;
level = 1;
}
break;
}
level--;
(void) sprintf (buffer, "%*s)\n", level * 4, "");
bf_write ();
return OK;
}
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