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#include <perl_libyaml.h>
#if (PERL_REVISION > 5) || (PERL_REVISION == 5 && PERL_VERSION >= 36)
# define PERL_HAVE_BOOLEANS
#endif
static SV *
call_coderef(SV *code, AV *args)
{
dSP;
SV **svp;
I32 count = (args && args != Nullav) ? av_len(args) : -1;
I32 i;
PUSHMARK(SP);
for (i = 0; i <= count; i++) {
if ((svp = av_fetch(args, i, FALSE))) {
XPUSHs(*svp);
}
}
PUTBACK;
count = call_sv(code, G_ARRAY);
SPAGAIN;
return fold_results(count);
}
static SV *
fold_results(I32 count)
{
dSP;
SV *retval = &PL_sv_undef;
if (count > 1) {
/* convert multiple return items into a list reference */
AV *av = newAV();
SV *last_sv = &PL_sv_undef;
SV *sv = &PL_sv_undef;
I32 i;
av_extend(av, count - 1);
for(i = 1; i <= count; i++) {
last_sv = sv;
sv = POPs;
if (SvOK(sv) && !av_store(av, count - i, SvREFCNT_inc(sv)))
SvREFCNT_dec(sv);
}
PUTBACK;
retval = sv_2mortal((SV *) newRV_noinc((SV *) av));
if (!SvOK(sv) || sv == &PL_sv_undef) {
/* if first element was undef, die */
croak("%sCall error", ERRMSG);
}
return retval;
}
else {
if (count)
retval = POPs;
PUTBACK;
return retval;
}
}
static SV *
find_coderef(char *perl_var)
{
SV *coderef;
if ((coderef = get_sv(perl_var, FALSE))
&& SvROK(coderef)
&& SvTYPE(SvRV(coderef)) == SVt_PVCV)
return coderef;
return NULL;
}
/*
* Piece together a parser/loader error message
*/
char *
loader_error_msg(perl_yaml_loader_t *loader, char *problem)
{
char *msg;
if (!problem)
problem = (char *)loader->parser.problem;
msg = form(
LOADERRMSG
"%swas found at "
"document: %d",
(problem ? form("The problem:\n\n %s\n\n", problem) : "A problem "),
loader->document
);
if (
loader->parser.problem_mark.line ||
loader->parser.problem_mark.column
)
msg = form("%s, line: %lu, column: %lu\n",
msg,
(unsigned long)loader->parser.problem_mark.line + 1,
(unsigned long)loader->parser.problem_mark.column + 1
);
else
msg = form("%s\n", msg);
if (loader->parser.context)
msg = form("%s%s at line: %lu, column: %lu\n",
msg,
loader->parser.context,
(unsigned long)loader->parser.context_mark.line + 1,
(unsigned long)loader->parser.context_mark.column + 1
);
return msg;
}
/*
* This is the main Load function.
* It takes a yaml stream and turns it into 0 or more Perl objects.
*/
void
Load(SV *yaml_sv)
{
dXCPT;
dXSARGS;
perl_yaml_loader_t loader;
SV *node;
const unsigned char *yaml_str;
STRLEN yaml_len;
GV *gv = gv_fetchpv("YAML::XS::Boolean", FALSE, SVt_PV);
char* boolean = "";
loader.load_bool_jsonpp = 0;
loader.load_bool_boolean = 0;
if (SvTRUE(GvSV(gv))) {
boolean = SvPV_nolen(GvSV(gv));
if (strEQ(boolean, "JSON::PP")) {
loader.load_bool_jsonpp = 1;
load_module(PERL_LOADMOD_NOIMPORT, newSVpv("JSON::PP", 0), Nullsv);
}
else if (strEQ(boolean, "boolean")) {
loader.load_bool_boolean = 1;
load_module(PERL_LOADMOD_NOIMPORT, newSVpv("boolean", 0), Nullsv);
}
else {
croak("%s",
"$YAML::XS::Boolean only accepts 'JSON::PP', 'boolean' or a false value");
}
}
loader.load_code = (
((gv = gv_fetchpv("YAML::XS::UseCode", TRUE, SVt_PV)) &&
SvTRUE(GvSV(gv)))
||
((gv = gv_fetchpv("YAML::XS::LoadCode", TRUE, SVt_PV)) &&
SvTRUE(GvSV(gv)))
);
loader.load_blessed = 0;
gv = gv_fetchpv("YAML::XS::LoadBlessed", FALSE, SVt_PV);
if (SvOK(GvSV(gv)) && SvTRUE(GvSV(gv))) {
loader.load_blessed = 1;
}
loader.forbid_duplicate_keys = 0;
gv = gv_fetchpv("YAML::XS::ForbidDuplicateKeys", FALSE, SVt_PV);
if (SvOK(GvSV(gv)) && SvTRUE(GvSV(gv))) {
loader.forbid_duplicate_keys = 1;
}
yaml_str = (const unsigned char *)SvPV_const(yaml_sv, yaml_len);
if (DO_UTF8(yaml_sv)) {
yaml_sv = sv_mortalcopy(yaml_sv);
if (!sv_utf8_downgrade(yaml_sv, TRUE))
croak("%s", "Wide character in YAML::XS::Load()");
yaml_str = (const unsigned char *)SvPV_const(yaml_sv, yaml_len);
}
sp = mark;
if (0 && (items || ax)) {} /* XXX Quiet the -Wall warnings for now. */
yaml_parser_initialize(&loader.parser);
loader.document = 0;
yaml_parser_set_input_string(
&loader.parser,
yaml_str,
yaml_len
);
/* Get the first event. Must be a STREAM_START */
if (!yaml_parser_parse(&loader.parser, &loader.event))
goto load_error;
if (loader.event.type != YAML_STREAM_START_EVENT)
croak("%sExpected STREAM_START_EVENT; Got: %d != %d",
ERRMSG,
loader.event.type,
YAML_STREAM_START_EVENT
);
loader.anchors = newHV();
sv_2mortal((SV *)loader.anchors);
XCPT_TRY_START {
/* Keep calling load_node until end of stream */
while (1) {
loader.document++;
/* We are through with the previous event - delete it! */
yaml_event_delete(&loader.event);
if (!yaml_parser_parse(&loader.parser, &loader.event))
goto load_error;
if (loader.event.type == YAML_STREAM_END_EVENT)
break;
node = load_node(&loader);
/* We are through with the previous event - delete it! */
yaml_event_delete(&loader.event);
hv_clear(loader.anchors);
if (! node) break;
XPUSHs(sv_2mortal(node));
if (!yaml_parser_parse(&loader.parser, &loader.event))
goto load_error;
if (loader.event.type != YAML_DOCUMENT_END_EVENT)
croak("%sExpected DOCUMENT_END_EVENT", ERRMSG);
}
/* Make sure the last event is a STREAM_END */
if (loader.event.type != YAML_STREAM_END_EVENT)
croak("%sExpected STREAM_END_EVENT; Got: %d != %d",
ERRMSG,
loader.event.type,
YAML_STREAM_END_EVENT
);
} XCPT_TRY_END
XCPT_CATCH
{
yaml_parser_delete(&loader.parser);
XCPT_RETHROW;
}
yaml_parser_delete(&loader.parser);
PUTBACK;
return;
load_error:
croak("%s", loader_error_msg(&loader, NULL));
}
/*
* This is the main function for dumping any node.
*/
SV *
load_node(perl_yaml_loader_t *loader)
{
char *tag;
SV* return_sv = NULL;
/* This uses stack, but avoids (severe!) memory leaks */
yaml_event_t uplevel_event;
uplevel_event = loader->event;
/* Get the next parser event */
if (!yaml_parser_parse(&loader->parser, &loader->event))
goto load_error;
/* These events don't need yaml_event_delete */
/* Some kind of error occurred */
if (loader->event.type == YAML_NO_EVENT)
goto load_error;
/* Return NULL when we hit the end of a scope */
if (loader->event.type == YAML_DOCUMENT_END_EVENT ||
loader->event.type == YAML_MAPPING_END_EVENT ||
loader->event.type == YAML_SEQUENCE_END_EVENT) {
/* restore the uplevel event, so it can be properly deleted */
loader->event = uplevel_event;
return return_sv;
}
/* The rest all need cleanup */
switch (loader->event.type) {
/* Handle loading a mapping */
case YAML_MAPPING_START_EVENT:
tag = (char *)loader->event.data.mapping_start.tag;
/* Handle mapping tagged as a Perl hard reference */
if (tag && strEQ(tag, TAG_PERL_REF)) {
return_sv = load_scalar_ref(loader);
break;
}
/* Handle mapping tagged as a Perl typeglob */
if (tag && strEQ(tag, TAG_PERL_GLOB)) {
return_sv = load_glob(loader);
break;
}
return_sv = load_mapping(loader, NULL);
break;
/* Handle loading a sequence into an array */
case YAML_SEQUENCE_START_EVENT:
return_sv = load_sequence(loader);
break;
/* Handle loading a scalar */
case YAML_SCALAR_EVENT:
return_sv = load_scalar(loader);
break;
/* Handle loading an alias node */
case YAML_ALIAS_EVENT:
return_sv = load_alias(loader);
break;
default:
croak("%sInvalid event '%d' at top level", ERRMSG, (int) loader->event.type);
}
yaml_event_delete(&loader->event);
/* restore the uplevel event, so it can be properly deleted */
loader->event = uplevel_event;
return return_sv;
load_error:
croak("%s", loader_error_msg(loader, NULL));
}
/*
* Load a YAML mapping into a Perl hash
*/
SV *
load_mapping(perl_yaml_loader_t *loader, char *tag)
{
dXCPT;
SV *key_node;
SV *value_node;
HV *hash = newHV();
SV *hash_ref = (SV *)newRV_noinc((SV *)hash);
char *anchor = (char *)loader->event.data.mapping_start.anchor;
if (!tag)
tag = (char *)loader->event.data.mapping_start.tag;
/* Store the anchor label if any */
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(hash_ref), 0);
XCPT_TRY_START {
/* Get each key string and value node and put them in the hash */
while ((key_node = load_node(loader))) {
assert(SvPOK(key_node));
value_node = load_node(loader);
if (loader->forbid_duplicate_keys &&
hv_exists_ent(hash, key_node, 0)
) {
croak(
"%s",
loader_error_msg(
loader,
form("Duplicate key '%s'", SvPV_nolen(key_node))
)
);
}
hv_store_ent(
hash, sv_2mortal(key_node), value_node, 0
);
}
/* Deal with possibly blessing the hash if the YAML tag has a class */
if (tag) {
if (strEQ(tag, TAG_PERL_PREFIX "hash")) {
}
else if (strEQ(tag, YAML_MAP_TAG)) {
}
else {
char *class;
char *prefix = TAG_PERL_PREFIX "hash:";
if (*tag == '!') {
prefix = "!";
}
else if (strlen(tag) <= strlen(prefix) ||
! strnEQ(tag, prefix, strlen(prefix))
) croak("%s",
loader_error_msg(loader, form("bad tag found for hash: '%s'", tag))
);
if (loader->load_blessed) {
class = tag + strlen(prefix);
sv_bless(hash_ref, gv_stashpv(class, TRUE));
}
}
}
} XCPT_TRY_END
XCPT_CATCH
{
SvREFCNT_dec(hash_ref);
XCPT_RETHROW;
}
return hash_ref;
}
/* Load a YAML sequence into a Perl array */
SV *
load_sequence(perl_yaml_loader_t *loader)
{
dXCPT;
SV *node;
AV *array = newAV();
SV *array_ref = (SV *)newRV_noinc((SV *)array);
char *anchor = (char *)loader->event.data.sequence_start.anchor;
char *tag = (char *)loader->event.data.mapping_start.tag;
XCPT_TRY_START {
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(array_ref), 0);
while ((node = load_node(loader))) {
av_push(array, node);
}
if (tag) {
if (strEQ(tag, TAG_PERL_PREFIX "array")) {
}
else if (strEQ(tag, YAML_SEQ_TAG)) {
}
else {
char *class;
char *prefix = TAG_PERL_PREFIX "array:";
if (*tag == '!')
prefix = "!";
else if (strlen(tag) <= strlen(prefix) ||
! strnEQ(tag, prefix, strlen(prefix))
) croak("%s",
loader_error_msg(loader, form("bad tag found for array: '%s'", tag))
);
if (loader->load_blessed) {
class = tag + strlen(prefix);
sv_bless(array_ref, gv_stashpv(class, TRUE));
}
}
}
} XCPT_TRY_END
XCPT_CATCH
{
SvREFCNT_dec(array_ref);
XCPT_RETHROW;
}
return array_ref;
}
/* Load a YAML scalar into a Perl scalar */
SV *
load_scalar(perl_yaml_loader_t *loader)
{
SV *scalar;
char *string = (char *)loader->event.data.scalar.value;
STRLEN length = (STRLEN)loader->event.data.scalar.length;
char *anchor = (char *)loader->event.data.scalar.anchor;
char *tag = (char *)loader->event.data.scalar.tag;
yaml_scalar_style_t style = loader->event.data.scalar.style;
if (tag) {
if (strEQ(tag, YAML_STR_TAG)) {
style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
}
else if (strEQ(tag, YAML_INT_TAG) || strEQ(tag, YAML_FLOAT_TAG)) {
/* TODO check int/float */
scalar = newSVpvn(string, length);
if ( looks_like_number(scalar) ) {
/* numify */
SvIV_please(scalar);
}
else {
croak("%s",
loader_error_msg(loader, form("Invalid content found for !!int tag: '%s'", tag))
);
}
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
else if (
strEQ(tag, YAML_NULL_TAG)
&&
(strEQ(string, "~") || strEQ(string, "null") || strEQ(string, ""))
) {
scalar = newSV(0);
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
else {
char *class;
char *prefix = TAG_PERL_PREFIX "regexp";
if (strnEQ(tag, prefix, strlen(prefix)))
return load_regexp(loader);
prefix = TAG_PERL_PREFIX "code";
if (strnEQ(tag, prefix, strlen(prefix)))
return load_code(loader);
prefix = TAG_PERL_PREFIX "scalar:";
if (*tag == '!')
prefix = "!";
else if (strlen(tag) <= strlen(prefix) ||
! strnEQ(tag, prefix, strlen(prefix))
) croak("%sbad tag found for scalar: '%s'", ERRMSG, tag);
class = tag + strlen(prefix);
if (loader->load_blessed)
scalar = sv_setref_pvn(newSV(0), class, string, strlen(string));
else
scalar = newSVpvn(string, length);
SvUTF8_on(scalar);
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
}
else if (style == YAML_PLAIN_SCALAR_STYLE) {
if (strEQ(string, "~") || strEQ(string, "null") || strEQ(string, "")) {
scalar = newSV(0);
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
else if (strEQ(string, "true")) {
if (loader->load_bool_jsonpp) {
char *name = "JSON::PP::Boolean";
scalar = newSV(1);
scalar = sv_setref_iv(scalar, name, 1);
}
else if (loader->load_bool_boolean) {
char *name = "boolean";
scalar = newSV(1);
scalar = sv_setref_iv(scalar, name, 1);
}
else {
#ifdef PERL_HAVE_BOOLEANS
scalar = newSVsv(&PL_sv_yes);
#else
scalar = &PL_sv_yes;
#endif
}
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
else if (strEQ(string, "false")) {
if (loader->load_bool_jsonpp) {
char *name = "JSON::PP::Boolean";
scalar = newSV(1);
scalar = sv_setref_iv(scalar, name, 0);
}
else if (loader->load_bool_boolean) {
char *name = "boolean";
scalar = newSV(1);
scalar = sv_setref_iv(scalar, name, 0);
}
else {
#ifdef PERL_HAVE_BOOLEANS
scalar = newSVsv(&PL_sv_no);
#else
scalar = &PL_sv_no;
#endif
}
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
}
scalar = newSVpvn(string, length);
if (style == YAML_PLAIN_SCALAR_STYLE && looks_like_number(scalar) ) {
/* numify */
SvIV_please(scalar);
}
(void)sv_utf8_decode(scalar);
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(scalar), 0);
return scalar;
}
/* Load a scalar marked as a regexp as a Perl regular expression.
* This operation is less common and is tricky, so doing it in Perl code for
* now.
*/
SV *
load_regexp(perl_yaml_loader_t * loader)
{
dSP;
char *string = (char *)loader->event.data.scalar.value;
STRLEN length = (STRLEN)loader->event.data.scalar.length;
char *anchor = (char *)loader->event.data.scalar.anchor;
char *tag = (char *)loader->event.data.scalar.tag;
char *prefix = TAG_PERL_PREFIX "regexp:";
SV *regexp = newSVpvn(string, length);
SvUTF8_on(regexp);
ENTER;
SAVETMPS;
PUSHMARK(sp);
XPUSHs(regexp);
PUTBACK;
call_pv("YAML::XS::__qr_loader", G_SCALAR);
SPAGAIN;
regexp = newSVsv(POPs);
PUTBACK;
FREETMPS;
LEAVE;
if (strlen(tag) > strlen(prefix) && strnEQ(tag, prefix, strlen(prefix))) {
if (loader->load_blessed) {
char *class = tag + strlen(prefix);
sv_bless(regexp, gv_stashpv(class, TRUE));
}
}
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(regexp), 0);
return regexp;
}
/* Load a scalar marked as code as a Perl code reference.
* This operation is less common and is tricky, so doing it in Perl code for
* now.
*/
SV*
load_code(perl_yaml_loader_t * loader)
{
dSP;
char *string = (char *)loader->event.data.scalar.value;
STRLEN length = (STRLEN)loader->event.data.scalar.length;
char *anchor = (char *)loader->event.data.scalar.anchor;
char *tag = (char *)loader->event.data.scalar.tag;
char *prefix = TAG_PERL_PREFIX "code:";
if (! loader->load_code) {
string = "{}";
length = 2;
}
SV *code = newSVpvn(string, length);
SvUTF8_on(code);
ENTER;
SAVETMPS;
PUSHMARK(sp);
XPUSHs(code);
PUTBACK;
call_pv("YAML::XS::__code_loader", G_SCALAR);
SPAGAIN;
code = newSVsv(POPs);
PUTBACK;
FREETMPS;
LEAVE;
if (strlen(tag) > strlen(prefix) && strnEQ(tag, prefix, strlen(prefix))) {
if (loader->load_blessed) {
char *class = tag + strlen(prefix);
sv_bless(code, gv_stashpv(class, TRUE));
}
}
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(code), 0);
return code;
}
/*
* Load a reference to a previously loaded node.
*/
SV *
load_alias(perl_yaml_loader_t *loader)
{
char *anchor = (char *)loader->event.data.alias.anchor;
SV **entry = hv_fetch(loader->anchors, anchor, strlen(anchor), 0);
if (entry)
return SvREFCNT_inc(*entry);
croak("%sNo anchor for alias '%s'", ERRMSG, anchor);
}
/*
* Load a Perl hard reference.
*/
SV *
load_scalar_ref(perl_yaml_loader_t *loader)
{
SV *value_node;
char *anchor = (char *)loader->event.data.mapping_start.anchor;
SV *rv = newRV_noinc(&PL_sv_undef);
if (anchor)
hv_store(loader->anchors, anchor, strlen(anchor), SvREFCNT_inc(rv), 0);
load_node(loader); /* Load the single hash key (=) */
value_node = load_node(loader);
SvRV(rv) = value_node;
if (load_node(loader))
croak("%sExpected end of node", ERRMSG);
return rv;
}
/*
* Load a Perl typeglob.
*/
SV *
load_glob(perl_yaml_loader_t *loader)
{
/* XXX Call back a Perl sub to do something interesting here */
return load_mapping(loader, TAG_PERL_PREFIX "hash");
}
/* -------------------------------------------------------------------------- */
/*
* Set dumper options from global variables.
*/
void
set_dumper_options(perl_yaml_dumper_t *dumper)
{
GV *gv;
char* boolean = "";
dumper->dump_code = (
((gv = gv_fetchpv("YAML::XS::UseCode", TRUE, SVt_PV)) &&
SvTRUE(GvSV(gv)))
||
((gv = gv_fetchpv("YAML::XS::DumpCode", TRUE, SVt_PV)) &&
SvTRUE(GvSV(gv)))
);
dumper->quote_number_strings = (
((gv = gv_fetchpv("YAML::XS::QuoteNumericStrings", TRUE, SVt_PV)) &&
SvTRUE(GvSV(gv)))
);
gv = gv_fetchpv("YAML::XS::Boolean", FALSE, SVt_PV);
dumper->dump_bool_jsonpp = 0;
dumper->dump_bool_boolean = 0;
if (SvTRUE(GvSV(gv))) {
boolean = SvPV_nolen(GvSV(gv));
if (strEQ(boolean, "JSON::PP")) {
dumper->dump_bool_jsonpp = 1;
load_module(PERL_LOADMOD_NOIMPORT, newSVpv("JSON::PP", 0), Nullsv);
}
else if (strEQ(boolean, "boolean")) {
dumper->dump_bool_boolean = 1;
load_module(PERL_LOADMOD_NOIMPORT, newSVpv("boolean", 0), Nullsv);
}
else {
croak("%s",
"$YAML::XS::Boolean only accepts 'JSON::PP', 'boolean' or a false value");
}
}
/* dumper->emitter.open_ended = 1;
*/
}
/*
* This is the main Dump function.
* Take zero or more Perl objects and return a YAML stream (as a string)
*/
void
Dump(SV *dummy, ...)
{
dXSARGS;
perl_yaml_dumper_t dumper;
yaml_event_t event_stream_start;
yaml_event_t event_stream_end;
int i;
SV *yaml = sv_2mortal(newSVpvn("", 0));
sp = mark;
set_dumper_options(&dumper);
/* Set up the emitter object and begin emitting */
yaml_emitter_initialize(&dumper.emitter);
/* set indent */
SV* indent = get_sv("YAML::XS::Indent", GV_ADD);
if (SvIOK(indent)) yaml_emitter_set_indent(&dumper.emitter, SvIV(indent));
yaml_emitter_set_unicode(&dumper.emitter, 1);
yaml_emitter_set_width(&dumper.emitter, 2);
yaml_emitter_set_output(
&dumper.emitter,
&append_output,
(void *) yaml
);
yaml_stream_start_event_initialize(
&event_stream_start,
YAML_UTF8_ENCODING
);
yaml_emitter_emit(&dumper.emitter, &event_stream_start);
dumper.anchors = newHV();
dumper.shadows = newHV();
sv_2mortal((SV *)dumper.anchors);
sv_2mortal((SV *)dumper.shadows);
for (i = 0; i < items; i++) {
dumper.anchor = 0;
dump_prewalk(&dumper, ST(i));
dump_document(&dumper, ST(i));
hv_clear(dumper.anchors);
hv_clear(dumper.shadows);
}
/* End emitting and destroy the emitter object */
yaml_stream_end_event_initialize(&event_stream_end);
yaml_emitter_emit(&dumper.emitter, &event_stream_end);
yaml_emitter_delete(&dumper.emitter);
/* Put the YAML stream scalar on the XS output stack */
if (yaml) {
SvUTF8_off(yaml);
XPUSHs(yaml);
}
PUTBACK;
}
/*
* In order to know which nodes will need anchors (for later aliasing) it is
* necessary to walk the entire data structure first. Once a node has been
* seen twice you can stop walking it. That way we can handle circular refs.
* All the node information is stored in an HV.
*/
void
dump_prewalk(perl_yaml_dumper_t *dumper, SV *node)
{
int i, len;
U32 ref_type;
SvGETMAGIC(node);
if (! (SvROK(node) || SvTYPE(node) == SVt_PVGV)) return;
{
SV *object = SvROK(node) ? SvRV(node) : node;
SV **seen =
hv_fetch(dumper->anchors, (char *)&object, sizeof(object), 0);
if (seen) {
if (*seen == &PL_sv_undef) {
hv_store(
dumper->anchors, (char *)&object, sizeof(object),
&PL_sv_yes, 0
);
}
return;
}
hv_store(
dumper->anchors, (char *)&object, sizeof(object), &PL_sv_undef, 0
);
}
if (SvTYPE(node) == SVt_PVGV) {
node = dump_glob(dumper, node);
}
ref_type = SvTYPE(SvRV(node));
if (ref_type == SVt_PVAV) {
AV *array = (AV *)SvRV(node);
int array_size = av_len(array) + 1;
for (i = 0; i < array_size; i++) {
SV **entry = av_fetch(array, i, 0);
if (entry)
dump_prewalk(dumper, *entry);
}
}
else if (ref_type == SVt_PVHV) {
HV *hash = (HV *)SvRV(node);
HE *he;
SV *key;
SV *val;
hv_iterinit(hash);
while ((he = hv_iternext(hash))) {
key = hv_iterkeysv(he);
he = hv_fetch_ent(hash, key, 0, 0);
val = he ? HeVAL(he) : NULL;
if (val) {
dump_prewalk(dumper, val);
}
}
}
else if (ref_type <= SVt_PVNV || ref_type == SVt_PVGV) {
SV *scalar = SvRV(node);
dump_prewalk(dumper, scalar);
}
}
void
dump_document(perl_yaml_dumper_t *dumper, SV *node)
{
yaml_event_t event_document_start;
yaml_event_t event_document_end;
yaml_document_start_event_initialize(
&event_document_start, NULL, NULL, NULL, 0
);
yaml_emitter_emit(&dumper->emitter, &event_document_start);
dump_node(dumper, node);
yaml_document_end_event_initialize(&event_document_end, 1);
yaml_emitter_emit(&dumper->emitter, &event_document_end);
}
void
dump_node(perl_yaml_dumper_t *dumper, SV *node)
{
yaml_char_t *anchor = NULL;
yaml_char_t *tag = NULL;
const char *class = NULL;
SvGETMAGIC(node);
if (SvTYPE(node) == SVt_PVGV) {
SV **svr;
tag = (yaml_char_t *)TAG_PERL_PREFIX "glob";
anchor = get_yaml_anchor(dumper, node);
if (anchor && strEQ((char *)anchor, "")) return;
svr = hv_fetch(dumper->shadows, (char *)&node, sizeof(node), 0);
if (svr) {
node = SvREFCNT_inc(*svr);
}
}
if (SvROK(node)) {
SV *rnode = SvRV(node);
U32 ref_type = SvTYPE(rnode);
if (ref_type == SVt_PVHV)
dump_hash(dumper, node, anchor, tag);
else if (ref_type == SVt_PVAV)
dump_array(dumper, node);
else if (ref_type <= SVt_PVNV || ref_type == SVt_PVGV)
dump_ref(dumper, node);
else if (ref_type == SVt_PVCV)
dump_code(dumper, node);
else if (ref_type == SVt_PVMG) {
MAGIC *mg;
yaml_char_t *tag = NULL;
if (SvMAGICAL(rnode)) {
if ((mg = mg_find(rnode, PERL_MAGIC_qr))) {
tag = (yaml_char_t *)form(TAG_PERL_PREFIX "regexp");
class = sv_reftype(rnode, TRUE);
if (!strEQ(class, "Regexp"))
tag = (yaml_char_t *)form("%s:%s", tag, class);
}
dump_scalar(dumper, node, tag);
}
else {
class = sv_reftype(rnode, TRUE);
if (
dumper->dump_bool_jsonpp
&& strEQ(class, "JSON::PP::Boolean")
||
dumper->dump_bool_boolean
&& strEQ(class, "boolean")
) {
if (SvIV(node)) {
dump_scalar(dumper, &PL_sv_yes, NULL);
}
else {
dump_scalar(dumper, &PL_sv_no, NULL);
}
}
else {
tag = (yaml_char_t *)form(
TAG_PERL_PREFIX "scalar:%s",
class
);
node = rnode;
dump_scalar(dumper, node, tag);
}
}
}
#if PERL_REVISION > 5 || (PERL_REVISION == 5 && PERL_VERSION >= 11)
else if (ref_type == SVt_REGEXP) {
yaml_char_t *tag = (yaml_char_t *)form(TAG_PERL_PREFIX "regexp");
class = sv_reftype(rnode, TRUE);
if (!strEQ(class, "Regexp"))
tag = (yaml_char_t *)form("%s:%s", tag, class);
dump_scalar(dumper, node, tag);
}
#endif
else {
printf(
"YAML::XS dump unhandled ref. type == '%d'!\n",
(int)ref_type
);
dump_scalar(dumper, rnode, NULL);
}
}
else {
dump_scalar(dumper, node, NULL);
}
}
yaml_char_t *
get_yaml_anchor(perl_yaml_dumper_t *dumper, SV *node)
{
yaml_event_t event_alias;
SV *iv;
SV **seen = hv_fetch(dumper->anchors, (char *)&node, sizeof(node), 0);
if (seen && *seen != &PL_sv_undef) {
if (*seen == &PL_sv_yes) {
dumper->anchor++;
iv = newSViv(dumper->anchor);
hv_store(dumper->anchors, (char *)&node, sizeof(node), iv, 0);
return (yaml_char_t*)SvPV_nolen(iv);
}
else {
yaml_char_t *anchor = (yaml_char_t *)SvPV_nolen(*seen);
yaml_alias_event_initialize(&event_alias, anchor);
yaml_emitter_emit(&dumper->emitter, &event_alias);
return (yaml_char_t *) "";
}
}
return NULL;
}
yaml_char_t *
get_yaml_tag(SV *node)
{
yaml_char_t *tag;
const char *class;
const char *kind = "";
if (! (
sv_isobject(node) ||
(SvRV(node) && ( SvTYPE(SvRV(node)) == SVt_PVCV))
)) return NULL;
class = sv_reftype(SvRV(node), TRUE);
switch (SvTYPE(SvRV(node))) {
case SVt_PVAV: { kind = "array"; break; }
case SVt_PVHV: { kind = "hash"; break; }
case SVt_PVCV: { kind = "code"; break; }
}
if ((strlen(kind) == 0))
tag = (yaml_char_t *)form("%s%s", TAG_PERL_PREFIX, class);
else if (SvTYPE(SvRV(node)) == SVt_PVCV && strEQ(class, "CODE"))
tag = (yaml_char_t *)form("%s%s", TAG_PERL_PREFIX, kind);
else
tag = (yaml_char_t *)form("%s%s:%s", TAG_PERL_PREFIX, kind, class);
return tag;
}
void
dump_hash(
perl_yaml_dumper_t *dumper, SV *node,
yaml_char_t *anchor, yaml_char_t *tag)
{
yaml_event_t event_mapping_start;
yaml_event_t event_mapping_end;
int i;
int len;
AV *av;
HV *hash = (HV *)SvRV(node);
HE *he;
if (!anchor)
anchor = get_yaml_anchor(dumper, (SV *)hash);
if (anchor && strEQ((char*)anchor, "")) return;
if (!tag)
tag = get_yaml_tag(node);
yaml_mapping_start_event_initialize(
&event_mapping_start, anchor, tag, 0, YAML_BLOCK_MAPPING_STYLE
);
yaml_emitter_emit(&dumper->emitter, &event_mapping_start);
av = newAV();
len = 0;
hv_iterinit(hash);
while ((he = hv_iternext(hash))) {
SV *key = hv_iterkeysv(he);
av_store(av, AvFILLp(av)+1, key); /* av_push(), really */
len++;
}
STORE_HASH_SORT;
for (i = 0; i < len; i++) {
SV *key = av_shift(av);
HE *he = hv_fetch_ent(hash, key, 0, 0);
SV *val = he ? HeVAL(he) : NULL;
if (val == NULL) { val = &PL_sv_undef; }
dump_node(dumper, key);
dump_node(dumper, val);
}
SvREFCNT_dec(av);
yaml_mapping_end_event_initialize(&event_mapping_end);
yaml_emitter_emit(&dumper->emitter, &event_mapping_end);
}
void
dump_array(perl_yaml_dumper_t *dumper, SV *node)
{
yaml_event_t event_sequence_start;
yaml_event_t event_sequence_end;
int i;
yaml_char_t *tag;
AV *array = (AV *)SvRV(node);
int array_size = av_len(array) + 1;
yaml_char_t *anchor = get_yaml_anchor(dumper, (SV *)array);
if (anchor && strEQ((char *)anchor, "")) return;
tag = get_yaml_tag(node);
yaml_sequence_start_event_initialize(
&event_sequence_start, anchor, tag, 0, YAML_BLOCK_SEQUENCE_STYLE
);
yaml_emitter_emit(&dumper->emitter, &event_sequence_start);
for (i = 0; i < array_size; i++) {
SV **entry = av_fetch(array, i, 0);
if (entry == NULL)
dump_node(dumper, &PL_sv_undef);
else
dump_node(dumper, *entry);
}
yaml_sequence_end_event_initialize(&event_sequence_end);
yaml_emitter_emit(&dumper->emitter, &event_sequence_end);
}
void
dump_scalar(perl_yaml_dumper_t *dumper, SV *node, yaml_char_t *tag)
{
yaml_event_t event_scalar;
char *string;
STRLEN string_len;
int plain_implicit, quoted_implicit;
yaml_scalar_style_t style = YAML_PLAIN_SCALAR_STYLE;
if (tag) {
plain_implicit = quoted_implicit = 0;
}
else {
tag = (yaml_char_t *)TAG_PERL_STR;
plain_implicit = quoted_implicit = 1;
}
SvGETMAGIC(node);
if (!SvOK(node)) {
string = "~";
string_len = 1;
style = YAML_PLAIN_SCALAR_STYLE;
}
else if (node == &PL_sv_yes
#ifdef PERL_HAVE_BOOLEANS
|| (SvIsBOOL(node) && SvTRUE(node))
#endif
) {
string = "true";
string_len = 4;
style = YAML_PLAIN_SCALAR_STYLE;
}
else if (node == &PL_sv_no
#ifdef PERL_HAVE_BOOLEANS
|| (SvIsBOOL(node) && !SvTRUE(node))
#endif
) {
string = "false";
string_len = 5;
style = YAML_PLAIN_SCALAR_STYLE;
}
else {
SV *node_clone = sv_mortalcopy(node);
string = SvPV_nomg(node_clone, string_len);
if (
(string_len == 0) ||
(string_len == 1 && strEQ(string, "~")) ||
(string_len == 4 && strEQ(string, "true")) ||
(string_len == 5 && strEQ(string, "false")) ||
(string_len == 4 && strEQ(string, "null")) ||
(SvTYPE(node_clone) >= SVt_PVGV) ||
( dumper->quote_number_strings && !SvNIOK(node_clone) && looks_like_number(node_clone) )
) {
style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
} else {
if (!SvUTF8(node_clone)) {
/* copy to new SV and promote to utf8 */
SV *utf8sv = sv_mortalcopy(node_clone);
/* get string and length out of utf8 */
string = SvPVutf8(utf8sv, string_len);
}
if(strchr(string, '\n'))
style = (string_len > 30) ? YAML_LITERAL_SCALAR_STYLE : YAML_DOUBLE_QUOTED_SCALAR_STYLE;
}
}
if (! yaml_scalar_event_initialize(
&event_scalar,
NULL,
tag,
(unsigned char *) string,
(int) string_len,
plain_implicit,
quoted_implicit,
style
)) {
croak("Could not initialize scalar event\n");
}
if (! yaml_emitter_emit(&dumper->emitter, &event_scalar))
croak("%sEmit scalar '%s', error: %s\n",
ERRMSG,
string, dumper->emitter.problem
);
}
void
dump_code(perl_yaml_dumper_t *dumper, SV *node)
{
yaml_event_t event_scalar;
yaml_char_t *tag;
yaml_scalar_style_t style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
char *string = "{ \"DUMMY\" }";
if (dumper->dump_code) {
/* load_module(PERL_LOADMOD_NOIMPORT, newSVpv("B::Deparse", 0), NULL);
*/
SV *result;
SV *code = find_coderef("YAML::XS::coderef2text");
AV *args = newAV();
av_push(args, SvREFCNT_inc(node));
args = (AV *)sv_2mortal((SV *)args);
result = call_coderef(code, args);
if (result && result != &PL_sv_undef) {
string = SvPV_nolen(result);
style = YAML_LITERAL_SCALAR_STYLE;
}
}
tag = get_yaml_tag(node);
yaml_scalar_event_initialize(
&event_scalar,
NULL,
tag,
(unsigned char *)string,
strlen(string),
0,
0,
style
);
yaml_emitter_emit(&dumper->emitter, &event_scalar);
}
SV *
dump_glob(perl_yaml_dumper_t *dumper, SV *node)
{
SV *result;
SV *code = find_coderef("YAML::XS::glob2hash");
AV *args = newAV();
av_push(args, SvREFCNT_inc(node));
args = (AV *)sv_2mortal((SV *)args);
result = call_coderef(code, args);
hv_store(
dumper->shadows, (char *)&node, sizeof(node),
result, 0
);
return result;
}
/* XXX Refo this to just dump a special map */
void
dump_ref(perl_yaml_dumper_t *dumper, SV *node)
{
yaml_event_t event_mapping_start;
yaml_event_t event_mapping_end;
yaml_event_t event_scalar;
SV *referent = SvRV(node);
yaml_char_t *anchor = get_yaml_anchor(dumper, referent);
if (anchor && strEQ((char *)anchor, "")) return;
yaml_mapping_start_event_initialize(
&event_mapping_start, anchor,
(unsigned char *)TAG_PERL_PREFIX "ref",
0, YAML_BLOCK_MAPPING_STYLE
);
yaml_emitter_emit(&dumper->emitter, &event_mapping_start);
yaml_scalar_event_initialize(
&event_scalar,
NULL, NULL,
(unsigned char *)"=", 1,
1, 1,
YAML_PLAIN_SCALAR_STYLE
);
yaml_emitter_emit(&dumper->emitter, &event_scalar);
dump_node(dumper, referent);
yaml_mapping_end_event_initialize(&event_mapping_end);
yaml_emitter_emit(&dumper->emitter, &event_mapping_end);
}
int
append_output(void *yaml, unsigned char *buffer, size_t size)
{
sv_catpvn((SV *)yaml, (const char *)buffer, (STRLEN)size);
return 1;
}
/* XXX Make -Wall not complain about 'local_patches' not being used. */
#if !defined(PERL_PATCHLEVEL_H_IMPLICIT)
void xxx_local_patches() {
printf("%s", local_patches[0]);
}
#endif