/*
 * This file was generated automatically by ExtUtils::ParseXS version 3.40 from the
 * contents of Call.xs. Do not edit this file, edit Call.xs instead.
 *
 *    ANY CHANGES MADE HERE WILL BE LOST!
 *
 */

#line 1 "Call.xs"
/* 
 * Filename : Call.xs
 * 
 * Author   : Paul Marquess 
 * Date     : 2014-12-09 02:48:44 rurban
 * Version  : 1.59
 *
 *    Copyright (c) 1995-2011 Paul Marquess. All rights reserved.
 *    Copyright (c) 2011-2014 Reini Urban. All rights reserved.
 *       This program is free software; you can redistribute it and/or
 *              modify it under the same terms as Perl itself.
 *
 */

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifdef _NOT_CORE
#  include "ppport.h"
#endif

/* Internal defines */
#define PERL_MODULE(s)		IoBOTTOM_NAME(s)
#define PERL_OBJECT(s)		IoTOP_GV(s)
#define FILTER_ACTIVE(s)	IoLINES(s)
#define BUF_OFFSET(sv)  	IoPAGE_LEN(sv)
#define CODE_REF(sv)  		IoPAGE(sv)
#ifndef PERL_FILTER_EXISTS
#  define PERL_FILTER_EXISTS(i) (PL_rsfp_filters && (i) <= av_len(PL_rsfp_filters))
#endif

#define SET_LEN(sv,len) \
        do { SvPVX(sv)[len] = '\0'; SvCUR_set(sv, len); } while (0)


/* Global Data */

#define MY_CXT_KEY "Filter::Util::Call::_guts" XS_VERSION
 
typedef struct {
    int x_fdebug ;
    int x_current_idx ;
} my_cxt_t;
 
START_MY_CXT
 
#define fdebug          (MY_CXT.x_fdebug)
#define current_idx     (MY_CXT.x_current_idx)


static I32
filter_call(pTHX_ int idx, SV *buf_sv, int maxlen)
{
    dMY_CXT;
    SV   *my_sv = FILTER_DATA(idx);
    const char *nl = "\n";
    char *p;
    char *out_ptr;
    int n;

    if (fdebug)
	warn("**** In filter_call - maxlen = %d, out len buf = %" IVdf " idx = %d my_sv = %" IVdf " [%s]\n",
             maxlen, (IV)SvCUR(buf_sv), idx, (IV)SvCUR(my_sv), SvPVX(my_sv) ) ;

    while (1) {

	/* anything left from last time */

        if ((n = SvCUR(my_sv))) {
            assert(SvCUR(my_sv) < PERL_INT_MAX) ;

	    out_ptr = SvPVX(my_sv) + BUF_OFFSET(my_sv) ;

	    if (maxlen) { 
		/* want a block */ 
		if (fdebug)
		    warn("BLOCK(%d): size = %d, maxlen = %d\n", 
			idx, n, maxlen) ;

	        sv_catpvn(buf_sv, out_ptr, maxlen > n ? n : maxlen );
		if(n <= maxlen) {
		    BUF_OFFSET(my_sv) = 0 ;
	            SET_LEN(my_sv, 0) ;
		}
		else {
		    BUF_OFFSET(my_sv) += maxlen ;
	            SvCUR_set(my_sv, n - maxlen) ;
		}
	        return SvCUR(buf_sv);
	    }
	    else {
		/* want lines */
                if ((p = ninstr(out_ptr, out_ptr + n, nl, nl + 1))) {

	            sv_catpvn(buf_sv, out_ptr, p - out_ptr + 1);

	            n = n - (p - out_ptr + 1);
		    BUF_OFFSET(my_sv) += (p - out_ptr + 1);
	            SvCUR_set(my_sv, n) ;
	            if (fdebug)
		        warn("recycle %d - leaving %d, returning %" IVdf " [%s]",
                             idx, n, (IV)SvCUR(buf_sv), SvPVX(buf_sv)) ;

	            return SvCUR(buf_sv);
	        }
	        else /* no EOL, so append the complete buffer */
	            sv_catpvn(buf_sv, out_ptr, n) ;
	    }
	    
	}


	SET_LEN(my_sv, 0) ;
	BUF_OFFSET(my_sv) = 0 ;

	if (FILTER_ACTIVE(my_sv))
	{
    	    dSP ;
    	    int count ;

            if (fdebug)
		warn("gonna call %s::filter\n", PERL_MODULE(my_sv)) ;

    	    ENTER ;
    	    SAVETMPS;
	
	    SAVEINT(current_idx) ; 	/* save current idx */
	    current_idx = idx ;

	    SAVE_DEFSV ;	/* save $_ */
	    /* make $_ use our buffer */
	    DEFSV_set(newSVpv("", 0)) ; 

    	    PUSHMARK(sp) ;
	    if (CODE_REF(my_sv)) {
	    /* if (SvROK(PERL_OBJECT(my_sv)) && SvTYPE(SvRV(PERL_OBJECT(my_sv))) == SVt_PVCV) { */
    	        count = perl_call_sv((SV*)PERL_OBJECT(my_sv), G_SCALAR);
	    }
	    else {
                XPUSHs((SV*)PERL_OBJECT(my_sv)) ;  
    	        PUTBACK ;
    	        count = perl_call_method("filter", G_SCALAR);
	    }
    	    SPAGAIN ;

            if (count != 1)
	        croak("Filter::Util::Call - %s::filter returned %d values, 1 was expected \n", 
			PERL_MODULE(my_sv), count ) ;
    
	    n = (IV)POPi ;

	    if (fdebug)
	        warn("status = %d, length op buf = %" IVdf " [%s]\n",
		     n, (IV)SvCUR(DEFSV), SvPVX(DEFSV) ) ;
	    if (SvCUR(DEFSV))
	        sv_setpvn(my_sv, SvPVX(DEFSV), SvCUR(DEFSV)) ; 

    	    sv_2mortal(DEFSV);

    	    PUTBACK ;
    	    FREETMPS ;
    	    LEAVE ;
	}
	else
	    n = FILTER_READ(idx + 1, my_sv, maxlen) ;

 	if (n <= 0)
	{
	    /* Either EOF or an error */

	    if (fdebug) 
	        warn ("filter_read %d returned %d , returning %" IVdf "\n", idx, n,
		      (SvCUR(buf_sv)>0) ? (IV)SvCUR(buf_sv) : (IV)n);

	    /* PERL_MODULE(my_sv) ; */
	    /* PERL_OBJECT(my_sv) ; */
	    filter_del(filter_call); 

	    /* If error, return the code */
	    if (n < 0)
		return n ;

	    /* return what we have so far else signal eof */
	    return (SvCUR(buf_sv)>0) ? (int)SvCUR(buf_sv) : n;
	}

    }
}



#line 203 "Call.c"
#ifndef PERL_UNUSED_VAR
#  define PERL_UNUSED_VAR(var) if (0) var = var
#endif

#ifndef dVAR
#  define dVAR		dNOOP
#endif


/* This stuff is not part of the API! You have been warned. */
#ifndef PERL_VERSION_DECIMAL
#  define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s)
#endif
#ifndef PERL_DECIMAL_VERSION
#  define PERL_DECIMAL_VERSION \
	  PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION)
#endif
#ifndef PERL_VERSION_GE
#  define PERL_VERSION_GE(r,v,s) \
	  (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s))
#endif
#ifndef PERL_VERSION_LE
#  define PERL_VERSION_LE(r,v,s) \
	  (PERL_DECIMAL_VERSION <= PERL_VERSION_DECIMAL(r,v,s))
#endif

/* XS_INTERNAL is the explicit static-linkage variant of the default
 * XS macro.
 *
 * XS_EXTERNAL is the same as XS_INTERNAL except it does not include
 * "STATIC", ie. it exports XSUB symbols. You probably don't want that
 * for anything but the BOOT XSUB.
 *
 * See XSUB.h in core!
 */


/* TODO: This might be compatible further back than 5.10.0. */
#if PERL_VERSION_GE(5, 10, 0) && PERL_VERSION_LE(5, 15, 1)
#  undef XS_EXTERNAL
#  undef XS_INTERNAL
#  if defined(__CYGWIN__) && defined(USE_DYNAMIC_LOADING)
#    define XS_EXTERNAL(name) __declspec(dllexport) XSPROTO(name)
#    define XS_INTERNAL(name) STATIC XSPROTO(name)
#  endif
#  if defined(__SYMBIAN32__)
#    define XS_EXTERNAL(name) EXPORT_C XSPROTO(name)
#    define XS_INTERNAL(name) EXPORT_C STATIC XSPROTO(name)
#  endif
#  ifndef XS_EXTERNAL
#    if defined(HASATTRIBUTE_UNUSED) && !defined(__cplusplus)
#      define XS_EXTERNAL(name) void name(pTHX_ CV* cv __attribute__unused__)
#      define XS_INTERNAL(name) STATIC void name(pTHX_ CV* cv __attribute__unused__)
#    else
#      ifdef __cplusplus
#        define XS_EXTERNAL(name) extern "C" XSPROTO(name)
#        define XS_INTERNAL(name) static XSPROTO(name)
#      else
#        define XS_EXTERNAL(name) XSPROTO(name)
#        define XS_INTERNAL(name) STATIC XSPROTO(name)
#      endif
#    endif
#  endif
#endif

/* perl >= 5.10.0 && perl <= 5.15.1 */


/* The XS_EXTERNAL macro is used for functions that must not be static
 * like the boot XSUB of a module. If perl didn't have an XS_EXTERNAL
 * macro defined, the best we can do is assume XS is the same.
 * Dito for XS_INTERNAL.
 */
#ifndef XS_EXTERNAL
#  define XS_EXTERNAL(name) XS(name)
#endif
#ifndef XS_INTERNAL
#  define XS_INTERNAL(name) XS(name)
#endif

/* Now, finally, after all this mess, we want an ExtUtils::ParseXS
 * internal macro that we're free to redefine for varying linkage due
 * to the EXPORT_XSUB_SYMBOLS XS keyword. This is internal, use
 * XS_EXTERNAL(name) or XS_INTERNAL(name) in your code if you need to!
 */

#undef XS_EUPXS
#if defined(PERL_EUPXS_ALWAYS_EXPORT)
#  define XS_EUPXS(name) XS_EXTERNAL(name)
#else
   /* default to internal */
#  define XS_EUPXS(name) XS_INTERNAL(name)
#endif

#ifndef PERL_ARGS_ASSERT_CROAK_XS_USAGE
#define PERL_ARGS_ASSERT_CROAK_XS_USAGE assert(cv); assert(params)

/* prototype to pass -Wmissing-prototypes */
STATIC void
S_croak_xs_usage(const CV *const cv, const char *const params);

STATIC void
S_croak_xs_usage(const CV *const cv, const char *const params)
{
    const GV *const gv = CvGV(cv);

    PERL_ARGS_ASSERT_CROAK_XS_USAGE;

    if (gv) {
        const char *const gvname = GvNAME(gv);
        const HV *const stash = GvSTASH(gv);
        const char *const hvname = stash ? HvNAME(stash) : NULL;

        if (hvname)
	    Perl_croak_nocontext("Usage: %s::%s(%s)", hvname, gvname, params);
        else
	    Perl_croak_nocontext("Usage: %s(%s)", gvname, params);
    } else {
        /* Pants. I don't think that it should be possible to get here. */
	Perl_croak_nocontext("Usage: CODE(0x%" UVxf ")(%s)", PTR2UV(cv), params);
    }
}
#undef  PERL_ARGS_ASSERT_CROAK_XS_USAGE

#define croak_xs_usage        S_croak_xs_usage

#endif

/* NOTE: the prototype of newXSproto() is different in versions of perls,
 * so we define a portable version of newXSproto()
 */
#ifdef newXS_flags
#define newXSproto_portable(name, c_impl, file, proto) newXS_flags(name, c_impl, file, proto, 0)
#else
#define newXSproto_portable(name, c_impl, file, proto) (PL_Sv=(SV*)newXS(name, c_impl, file), sv_setpv(PL_Sv, proto), (CV*)PL_Sv)
#endif /* !defined(newXS_flags) */

#if PERL_VERSION_LE(5, 21, 5)
#  define newXS_deffile(a,b) Perl_newXS(aTHX_ a,b,file)
#else
#  define newXS_deffile(a,b) Perl_newXS_deffile(aTHX_ a,b)
#endif

#line 347 "Call.c"
#define IDX		current_idx

XS_EUPXS(XS_Filter__Util__Call_filter_read); /* prototype to pass -Wmissing-prototypes */
XS_EUPXS(XS_Filter__Util__Call_filter_read)
{
    dVAR; dXSARGS;
    if (items < 0 || items > 1)
       croak_xs_usage(cv,  "size=0");
    {
	int	size;
	int	RETVAL;
	dXSTARG;

	if (items < 1)
	    size = 0;
	else {
	    size = (int)SvIV(ST(0))
;
	}
#line 204 "Call.xs"
	{
    	    dMY_CXT;
	    SV * buffer = DEFSV ;

	    RETVAL = FILTER_READ(IDX + 1, buffer, size) ;
	}
#line 374 "Call.c"
	XSprePUSH; PUSHi((IV)RETVAL);
    }
    XSRETURN(1);
}


XS_EUPXS(XS_Filter__Util__Call_real_import); /* prototype to pass -Wmissing-prototypes */
XS_EUPXS(XS_Filter__Util__Call_real_import)
{
    dVAR; dXSARGS;
    if (items != 3)
       croak_xs_usage(cv,  "object, perlmodule, coderef");
    PERL_UNUSED_VAR(ax); /* -Wall */
    SP -= items;
    {
	SV *	object = ST(0)
;
	char *	perlmodule = (char *)SvPV_nolen(ST(1))
;
	IV	coderef = (IV)SvIV(ST(2))
;
#line 222 "Call.xs"
    {
        SV * sv = newSV(1) ;

        (void)SvPOK_only(sv) ;
        filter_add(filter_call, sv) ;

	PERL_MODULE(sv) = savepv(perlmodule) ;
	PERL_OBJECT(sv) = (GV*) newSVsv(object) ;
	FILTER_ACTIVE(sv) = TRUE ;
        BUF_OFFSET(sv) = 0 ;
	CODE_REF(sv)   = coderef ;

        SvCUR_set(sv, 0) ;

    }
#line 412 "Call.c"
	PUTBACK;
	return;
    }
}


XS_EUPXS(XS_Filter__Util__Call_filter_del); /* prototype to pass -Wmissing-prototypes */
XS_EUPXS(XS_Filter__Util__Call_filter_del)
{
    dVAR; dXSARGS;
    if (items != 0)
       croak_xs_usage(cv,  "");
    {
#line 241 "Call.xs"
        dMY_CXT;
	if (PERL_FILTER_EXISTS(IDX) && FILTER_DATA(IDX) && FILTER_ACTIVE(FILTER_DATA(IDX)))
	    FILTER_ACTIVE(FILTER_DATA(IDX)) = FALSE ;
#line 430 "Call.c"
    }
    XSRETURN_EMPTY;
}


XS_EUPXS(XS_Filter__Util__Call_unimport); /* prototype to pass -Wmissing-prototypes */
XS_EUPXS(XS_Filter__Util__Call_unimport)
{
    dVAR; dXSARGS;
    PERL_UNUSED_VAR(cv); /* -W */
    PERL_UNUSED_VAR(items); /* -W */
    PERL_UNUSED_VAR(ax); /* -Wall */
    SP -= items;
    {
	const char *	package;

	if (items < 1)
	    package = "Filter::Util::Call";
	else {
	    package = (const char *)SvPV_nolen(ST(0))
;
	}
#line 251 "Call.xs"
    PERL_UNUSED_VAR(package);
    filter_del(filter_call);
#line 456 "Call.c"
	PUTBACK;
	return;
    }
}

#ifdef __cplusplus
extern "C"
#endif
XS_EXTERNAL(boot_Filter__Util__Call); /* prototype to pass -Wmissing-prototypes */
XS_EXTERNAL(boot_Filter__Util__Call)
{
#if PERL_VERSION_LE(5, 21, 5)
    dVAR; dXSARGS;
#else
    dVAR; dXSBOOTARGSXSAPIVERCHK;
#endif
#if (PERL_REVISION == 5 && PERL_VERSION < 9)
    char* file = __FILE__;
#else
    const char* file = __FILE__;
#endif

    PERL_UNUSED_VAR(file);

    PERL_UNUSED_VAR(cv); /* -W */
    PERL_UNUSED_VAR(items); /* -W */
#if PERL_VERSION_LE(5, 21, 5)
    XS_VERSION_BOOTCHECK;
#  ifdef XS_APIVERSION_BOOTCHECK
    XS_APIVERSION_BOOTCHECK;
#  endif
#endif

        (void)newXSproto_portable("Filter::Util::Call::filter_read", XS_Filter__Util__Call_filter_read, file, ";$");
        (void)newXSproto_portable("Filter::Util::Call::real_import", XS_Filter__Util__Call_real_import, file, "$$$");
        (void)newXSproto_portable("Filter::Util::Call::filter_del", XS_Filter__Util__Call_filter_del, file, "");
        (void)newXSproto_portable("Filter::Util::Call::unimport", XS_Filter__Util__Call_unimport, file, ";$@");

    /* Initialisation Section */

#line 256 "Call.xs"
  {
    MY_CXT_INIT;
#ifdef FDEBUG
    fdebug = 1;
#else
    fdebug = 0;
#endif
    /* temporary hack to control debugging in toke.c */
    if (fdebug)
        filter_add(NULL, (fdebug) ? (SV*)"1" : (SV*)"0");  
  }

#line 510 "Call.c"

    /* End of Initialisation Section */

#if PERL_VERSION_LE(5, 21, 5)
#  if PERL_VERSION_GE(5, 9, 0)
    if (PL_unitcheckav)
        call_list(PL_scopestack_ix, PL_unitcheckav);
#  endif
    XSRETURN_YES;
#else
    Perl_xs_boot_epilog(aTHX_ ax);
#endif
}

