4 * Author : Paul Marquess
5 * Date : 26th March 2000
15 # include "patchlevel.h"
16 # define PERL_REVISION 5
17 # define PERL_VERSION PATCHLEVEL
18 # define PERL_SUBVERSION SUBVERSION
21 /* defgv must be accessed differently under threaded perl */
22 /* DEFSV et al are in 5.004_56 */
24 # define DEFSV GvSV(defgv)
35 /* Internal defines */
36 #define PERL_MODULE(s) IoBOTTOM_NAME(s)
37 #define PERL_OBJECT(s) IoTOP_GV(s)
38 #define FILTER_ACTIVE(s) IoLINES(s)
39 #define BUF_OFFSET(sv) IoPAGE_LEN(sv)
40 #define CODE_REF(sv) IoPAGE(sv)
42 #define SET_LEN(sv,len) \
43 do { SvPVX(sv)[len] = '\0'; SvCUR_set(sv, len); } while (0)
47 static int fdebug = 0;
48 static int current_idx ;
51 filter_call(pTHX_ int idx, SV *buf_sv, int maxlen)
53 SV *my_sv = FILTER_DATA(idx);
60 warn("**** In filter_call - maxlen = %d, out len buf = %d idx = %d my_sv = %d [%s]\n",
61 maxlen, SvCUR(buf_sv), idx, SvCUR(my_sv), SvPVX(my_sv) ) ;
65 /* anything left from last time */
66 if (n = SvCUR(my_sv)) {
68 out_ptr = SvPVX(my_sv) + BUF_OFFSET(my_sv) ;
73 warn("BLOCK(%d): size = %d, maxlen = %d\n",
76 sv_catpvn(buf_sv, out_ptr, maxlen > n ? n : maxlen );
78 BUF_OFFSET(my_sv) = 0 ;
82 BUF_OFFSET(my_sv) += maxlen ;
83 SvCUR_set(my_sv, n - maxlen) ;
89 if (p = ninstr(out_ptr, out_ptr + n - 1, nl, nl)) {
91 sv_catpvn(buf_sv, out_ptr, p - out_ptr + 1);
93 n = n - (p - out_ptr + 1);
94 BUF_OFFSET(my_sv) += (p - out_ptr + 1);
97 warn("recycle %d - leaving %d, returning %d [%s]",
98 idx, n, SvCUR(buf_sv), SvPVX(buf_sv)) ;
100 return SvCUR(buf_sv);
102 else /* no EOL, so append the complete buffer */
103 sv_catpvn(buf_sv, out_ptr, n) ;
110 BUF_OFFSET(my_sv) = 0 ;
112 if (FILTER_ACTIVE(my_sv))
118 warn("gonna call %s::filter\n", PERL_MODULE(my_sv)) ;
123 SAVEINT(current_idx) ; /* save current idx */
126 SAVESPTR(DEFSV) ; /* save $_ */
127 /* make $_ use our buffer */
128 DEFSV = sv_2mortal(newSVpv("", 0)) ;
132 if (CODE_REF(my_sv)) {
133 /* if (SvROK(PERL_OBJECT(my_sv)) && SvTYPE(SvRV(PERL_OBJECT(my_sv))) == SVt_PVCV) { */
134 count = perl_call_sv((SV*)PERL_OBJECT(my_sv), G_SCALAR);
137 XPUSHs((SV*)PERL_OBJECT(my_sv)) ;
141 count = perl_call_method("filter", G_SCALAR);
147 croak("Filter::Util::Call - %s::filter returned %d values, 1 was expected \n",
148 PERL_MODULE(my_sv), count ) ;
153 warn("status = %d, length op buf = %d [%s]\n",
154 n, SvCUR(DEFSV), SvPVX(DEFSV) ) ;
156 sv_setpvn(my_sv, SvPVX(DEFSV), SvCUR(DEFSV)) ;
163 n = FILTER_READ(idx + 1, my_sv, maxlen) ;
167 /* Either EOF or an error */
170 warn ("filter_read %d returned %d , returning %d\n", idx, n,
171 (SvCUR(buf_sv)>0) ? SvCUR(buf_sv) : n);
173 /* PERL_MODULE(my_sv) ; */
174 /* PERL_OBJECT(my_sv) ; */
175 filter_del(filter_call);
177 /* If error, return the code */
181 /* return what we have so far else signal eof */
182 return (SvCUR(buf_sv)>0) ? SvCUR(buf_sv) : n;
190 MODULE = Filter::Util::Call PACKAGE = Filter::Util::Call
195 #define IDX current_idx
202 SV * buffer = DEFSV ;
204 RETVAL = FILTER_READ(IDX + 1, buffer, size) ;
213 real_import(object, perlmodule, coderef)
221 (void)SvPOK_only(sv) ;
222 filter_add(filter_call, sv) ;
224 PERL_MODULE(sv) = savepv(perlmodule) ;
225 PERL_OBJECT(sv) = (GV*) newSVsv(object) ;
226 FILTER_ACTIVE(sv) = TRUE ;
228 CODE_REF(sv) = coderef ;
237 FILTER_ACTIVE(FILTER_DATA(IDX)) = FALSE ;
244 filter_del(filter_call);
248 /* temporary hack to control debugging in toke.c */
250 filter_add(NULL, (fdebug) ? (SV*)"1" : (SV*)"0");