1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
|
/*
* functions.c: Implementation of the XSLT extra functions
*
* Reference:
* http://www.w3.org/TR/1999/REC-xslt-19991116
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
* Bjorn Reese <breese@users.sourceforge.net> for number formatting
*/
#define IN_LIBXSLT
#include "libxslt.h"
#include <string.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/valid.h>
#include <libxml/hash.h>
#include <libxml/xmlerror.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include <libxml/parserInternals.h>
#include <libxml/uri.h>
#include <libxml/xpointer.h>
#include "xslt.h"
#include "xsltInternals.h"
#include "xsltutils.h"
#include "functions.h"
#include "extensions.h"
#include "numbersInternals.h"
#include "keys.h"
#include "documents.h"
#ifdef WITH_XSLT_DEBUG
#define WITH_XSLT_DEBUG_FUNCTION
#endif
/*
* Some versions of DocBook XSL use the vendor string to detect
* supporting chunking, this is a workaround to be considered
* in the list of decent XSLT processors <grin/>
*/
#define DOCBOOK_XSL_HACK
/**
* xsltXPathFunctionLookup:
* @ctxt: a void * but the XSLT transformation context actually
* @name: the function name
* @ns_uri: the function namespace URI
*
* This is the entry point when a function is needed by the XPath
* interpretor.
*
* Returns the callback function or NULL if not found
*/
xmlXPathFunction
xsltXPathFunctionLookup (xmlXPathContextPtr ctxt,
const xmlChar *name, const xmlChar *ns_uri) {
xmlXPathFunction ret;
if ((ctxt == NULL) || (name == NULL) || (ns_uri == NULL))
return (NULL);
#ifdef WITH_XSLT_DEBUG_FUNCTION
xsltGenericDebug(xsltGenericDebugContext,
"Lookup function {%s}%s\n", ns_uri, name);
#endif
/* give priority to context-level functions */
/*
ret = (xmlXPathFunction) xmlHashLookup2(ctxt->funcHash, name, ns_uri);
*/
XML_CAST_FPTR(ret) = xmlHashLookup2(ctxt->funcHash, name, ns_uri);
if (ret == NULL)
ret = xsltExtModuleFunctionLookup(name, ns_uri);
#ifdef WITH_XSLT_DEBUG_FUNCTION
if (ret != NULL)
xsltGenericDebug(xsltGenericDebugContext,
"found function %s\n", name);
#endif
return(ret);
}
/************************************************************************
* *
* Module interfaces *
* *
************************************************************************/
static void
xsltDocumentFunctionLoadDocument(xmlXPathParserContextPtr ctxt, xmlChar* URI)
{
xsltTransformContextPtr tctxt;
xmlURIPtr uri;
xmlChar *fragment;
xsltDocumentPtr idoc; /* document info */
xmlDocPtr doc;
xmlXPathContextPtr xptrctxt = NULL;
xmlXPathObjectPtr resObj = NULL;
tctxt = xsltXPathGetTransformContext(ctxt);
if (tctxt == NULL) {
xsltTransformError(NULL, NULL, NULL,
"document() : internal error tctxt == NULL\n");
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
return;
}
uri = xmlParseURI((const char *) URI);
if (uri == NULL) {
xsltTransformError(tctxt, NULL, NULL,
"document() : failed to parse URI\n");
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
return;
}
/*
* check for and remove fragment identifier
*/
fragment = (xmlChar *)uri->fragment;
if (fragment != NULL) {
xmlChar *newURI;
uri->fragment = NULL;
newURI = xmlSaveUri(uri);
idoc = xsltLoadDocument(tctxt, newURI);
xmlFree(newURI);
} else
idoc = xsltLoadDocument(tctxt, URI);
xmlFreeURI(uri);
if (idoc == NULL) {
if ((URI == NULL) ||
(URI[0] == '#') ||
((tctxt->style->doc != NULL) &&
(xmlStrEqual(tctxt->style->doc->URL, URI))))
{
/*
* This selects the stylesheet's doc itself.
*/
doc = tctxt->style->doc;
} else {
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
if (fragment != NULL)
xmlFree(fragment);
return;
}
} else
doc = idoc->doc;
if (fragment == NULL) {
valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr) doc));
return;
}
/* use XPointer of HTML location for fragment ID */
#ifdef LIBXML_XPTR_ENABLED
xptrctxt = xmlXPtrNewContext(doc, NULL, NULL);
if (xptrctxt == NULL) {
xsltTransformError(tctxt, NULL, NULL,
"document() : internal error xptrctxt == NULL\n");
goto out_fragment;
}
resObj = xmlXPtrEval(fragment, xptrctxt);
xmlXPathFreeContext(xptrctxt);
#endif
if (resObj == NULL)
goto out_fragment;
switch (resObj->type) {
case XPATH_NODESET:
break;
case XPATH_UNDEFINED:
case XPATH_BOOLEAN:
case XPATH_NUMBER:
case XPATH_STRING:
case XPATH_POINT:
case XPATH_USERS:
case XPATH_XSLT_TREE:
case XPATH_RANGE:
case XPATH_LOCATIONSET:
xsltTransformError(tctxt, NULL, NULL,
"document() : XPointer does not select a node set: #%s\n",
fragment);
goto out_object;
}
valuePush(ctxt, resObj);
xmlFree(fragment);
return;
out_object:
xmlXPathFreeObject(resObj);
out_fragment:
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
xmlFree(fragment);
}
/**
* xsltDocumentFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the document() XSLT function
* node-set document(object, node-set?)
*/
void
xsltDocumentFunction(xmlXPathParserContextPtr ctxt, int nargs)
{
xmlXPathObjectPtr obj, obj2 = NULL;
xmlChar *base = NULL, *URI;
if ((nargs < 1) || (nargs > 2)) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"document() : invalid number of args %d\n",
nargs);
ctxt->error = XPATH_INVALID_ARITY;
return;
}
if (ctxt->value == NULL) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"document() : invalid arg value\n");
ctxt->error = XPATH_INVALID_TYPE;
return;
}
if (nargs == 2) {
if (ctxt->value->type != XPATH_NODESET) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"document() : invalid arg expecting a nodeset\n");
ctxt->error = XPATH_INVALID_TYPE;
return;
}
obj2 = valuePop(ctxt);
}
if (ctxt->value->type == XPATH_NODESET) {
int i;
xmlXPathObjectPtr newobj, ret;
obj = valuePop(ctxt);
ret = xmlXPathNewNodeSet(NULL);
if ((obj != NULL) && obj->nodesetval) {
for (i = 0; i < obj->nodesetval->nodeNr; i++) {
valuePush(ctxt,
xmlXPathNewNodeSet(obj->nodesetval->nodeTab[i]));
xmlXPathStringFunction(ctxt, 1);
if (nargs == 2) {
valuePush(ctxt, xmlXPathObjectCopy(obj2));
} else {
valuePush(ctxt,
xmlXPathNewNodeSet(obj->nodesetval->
nodeTab[i]));
}
xsltDocumentFunction(ctxt, 2);
newobj = valuePop(ctxt);
ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval,
newobj->nodesetval);
xmlXPathFreeObject(newobj);
}
}
if (obj != NULL)
xmlXPathFreeObject(obj);
if (obj2 != NULL)
xmlXPathFreeObject(obj2);
valuePush(ctxt, ret);
return;
}
/*
* Make sure it's converted to a string
*/
xmlXPathStringFunction(ctxt, 1);
if (ctxt->value->type != XPATH_STRING) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"document() : invalid arg expecting a string\n");
ctxt->error = XPATH_INVALID_TYPE;
if (obj2 != NULL)
xmlXPathFreeObject(obj2);
return;
}
obj = valuePop(ctxt);
if (obj->stringval == NULL) {
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
} else {
xsltTransformContextPtr tctxt;
tctxt = xsltXPathGetTransformContext(ctxt);
if ((obj2 != NULL) && (obj2->nodesetval != NULL) &&
(obj2->nodesetval->nodeNr > 0) &&
IS_XSLT_REAL_NODE(obj2->nodesetval->nodeTab[0])) {
xmlNodePtr target;
target = obj2->nodesetval->nodeTab[0];
if ((target->type == XML_ATTRIBUTE_NODE) ||
(target->type == XML_PI_NODE)) {
target = ((xmlAttrPtr) target)->parent;
}
base = xmlNodeGetBase(target->doc, target);
} else {
if ((tctxt != NULL) && (tctxt->inst != NULL)) {
base = xmlNodeGetBase(tctxt->inst->doc, tctxt->inst);
} else if ((tctxt != NULL) && (tctxt->style != NULL) &&
(tctxt->style->doc != NULL)) {
base = xmlNodeGetBase(tctxt->style->doc,
(xmlNodePtr) tctxt->style->doc);
}
}
URI = xmlBuildURI(obj->stringval, base);
if (base != NULL)
xmlFree(base);
if (URI == NULL) {
if ((tctxt != NULL) && (tctxt->style != NULL) &&
(tctxt->style->doc != NULL) &&
(xmlStrEqual(URI, tctxt->style->doc->URL))) {
/* This selects the stylesheet's doc itself. */
valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr) tctxt->style->doc));
} else {
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
}
} else {
xsltDocumentFunctionLoadDocument( ctxt, URI );
xmlFree(URI);
}
}
xmlXPathFreeObject(obj);
if (obj2 != NULL)
xmlXPathFreeObject(obj2);
}
/**
* xsltKeyFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the key() XSLT function
* node-set key(string, object)
*/
void
xsltKeyFunction(xmlXPathParserContextPtr ctxt, int nargs){
xmlXPathObjectPtr obj1, obj2;
if (nargs != 2) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"key() : expects two arguments\n");
ctxt->error = XPATH_INVALID_ARITY;
return;
}
/*
* Get the key's value.
*/
obj2 = valuePop(ctxt);
xmlXPathStringFunction(ctxt, 1);
if ((obj2 == NULL) ||
(ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"key() : invalid arg expecting a string\n");
ctxt->error = XPATH_INVALID_TYPE;
xmlXPathFreeObject(obj2);
return;
}
/*
* Get the key's name.
*/
obj1 = valuePop(ctxt);
if ((obj2->type == XPATH_NODESET) || (obj2->type == XPATH_XSLT_TREE)) {
int i;
xmlXPathObjectPtr newobj, ret;
ret = xmlXPathNewNodeSet(NULL);
if (obj2->nodesetval != NULL) {
for (i = 0; i < obj2->nodesetval->nodeNr; i++) {
valuePush(ctxt, xmlXPathObjectCopy(obj1));
valuePush(ctxt,
xmlXPathNewNodeSet(obj2->nodesetval->nodeTab[i]));
xmlXPathStringFunction(ctxt, 1);
xsltKeyFunction(ctxt, 2);
newobj = valuePop(ctxt);
ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval,
newobj->nodesetval);
xmlXPathFreeObject(newobj);
}
}
valuePush(ctxt, ret);
} else {
xmlNodeSetPtr nodelist = NULL;
xmlChar *key = NULL, *value;
const xmlChar *keyURI;
xsltTransformContextPtr tctxt;
xmlChar *qname, *prefix;
xmlXPathContextPtr xpctxt = ctxt->context;
xmlNodePtr tmpNode = NULL;
xsltDocumentPtr oldDocInfo;
tctxt = xsltXPathGetTransformContext(ctxt);
oldDocInfo = tctxt->document;
if (xpctxt->node == NULL) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"Internal error in xsltKeyFunction(): "
"The context node is not set on the XPath context.\n");
tctxt->state = XSLT_STATE_STOPPED;
goto error;
}
/*
* Get the associated namespace URI if qualified name
*/
qname = obj1->stringval;
key = xmlSplitQName2(qname, &prefix);
if (key == NULL) {
key = xmlStrdup(obj1->stringval);
keyURI = NULL;
if (prefix != NULL)
xmlFree(prefix);
} else {
if (prefix != NULL) {
keyURI = xmlXPathNsLookup(xpctxt, prefix);
if (keyURI == NULL) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"key() : prefix %s is not bound\n", prefix);
/*
* TODO: Shouldn't we stop here?
*/
}
xmlFree(prefix);
} else {
keyURI = NULL;
}
}
/*
* Force conversion of first arg to string
*/
valuePush(ctxt, obj2);
xmlXPathStringFunction(ctxt, 1);
if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"key() : invalid arg expecting a string\n");
ctxt->error = XPATH_INVALID_TYPE;
goto error;
}
obj2 = valuePop(ctxt);
value = obj2->stringval;
/*
* We need to ensure that ctxt->document is available for
* xsltGetKey().
* First find the relevant doc, which is the context node's
* owner doc; using context->doc is not safe, since
* the doc could have been acquired via the document() function,
* or the doc might be a Result Tree Fragment.
* FUTURE INFO: In XSLT 2.0 the key() function takes an additional
* argument indicating the doc to use.
*/
if (xpctxt->node->type == XML_NAMESPACE_DECL) {
/*
* REVISIT: This is a libxml hack! Check xpath.c for details.
* The XPath module sets the owner element of a ns-node on
* the ns->next field.
*/
if ((((xmlNsPtr) xpctxt->node)->next != NULL) &&
(((xmlNsPtr) xpctxt->node)->next->type == XML_ELEMENT_NODE))
{
tmpNode = (xmlNodePtr) ((xmlNsPtr) xpctxt->node)->next;
}
} else
tmpNode = xpctxt->node;
if ((tmpNode == NULL) || (tmpNode->doc == NULL)) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"Internal error in xsltKeyFunction(): "
"Couldn't get the doc of the XPath context node.\n");
goto error;
}
if ((tctxt->document == NULL) ||
(tctxt->document->doc != tmpNode->doc))
{
if (tmpNode->doc->name && (tmpNode->doc->name[0] == ' ')) {
/*
* This is a Result Tree Fragment.
*/
if (tmpNode->doc->_private == NULL) {
tmpNode->doc->_private = xsltNewDocument(tctxt, tmpNode->doc);
if (tmpNode->doc->_private == NULL)
goto error;
}
tctxt->document = (xsltDocumentPtr) tmpNode->doc->_private;
} else {
/*
* May be the initial source doc or a doc acquired via the
* document() function.
*/
tctxt->document = xsltFindDocument(tctxt, tmpNode->doc);
}
if (tctxt->document == NULL) {
xsltTransformError(tctxt, NULL, tctxt->inst,
"Internal error in xsltKeyFunction(): "
"Could not get the document info of a context doc.\n");
tctxt->state = XSLT_STATE_STOPPED;
goto error;
}
}
/*
* Get/compute the key value.
*/
nodelist = xsltGetKey(tctxt, key, keyURI, value);
error:
tctxt->document = oldDocInfo;
valuePush(ctxt, xmlXPathWrapNodeSet(
xmlXPathNodeSetMerge(NULL, nodelist)));
if (key != NULL)
xmlFree(key);
}
if (obj1 != NULL)
xmlXPathFreeObject(obj1);
if (obj2 != NULL)
xmlXPathFreeObject(obj2);
}
/**
* xsltUnparsedEntityURIFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the unparsed-entity-uri() XSLT function
* string unparsed-entity-uri(string)
*/
void
xsltUnparsedEntityURIFunction(xmlXPathParserContextPtr ctxt, int nargs){
xmlXPathObjectPtr obj;
xmlChar *str;
if ((nargs != 1) || (ctxt->value == NULL)) {
xsltGenericError(xsltGenericErrorContext,
"unparsed-entity-uri() : expects one string arg\n");
ctxt->error = XPATH_INVALID_ARITY;
return;
}
obj = valuePop(ctxt);
if (obj->type != XPATH_STRING) {
obj = xmlXPathConvertString(obj);
}
str = obj->stringval;
if (str == NULL) {
valuePush(ctxt, xmlXPathNewString((const xmlChar *)""));
} else {
xmlEntityPtr entity;
entity = xmlGetDocEntity(ctxt->context->doc, str);
if (entity == NULL) {
valuePush(ctxt, xmlXPathNewString((const xmlChar *)""));
} else {
if (entity->URI != NULL)
valuePush(ctxt, xmlXPathNewString(entity->URI));
else
valuePush(ctxt, xmlXPathNewString((const xmlChar *)""));
}
}
xmlXPathFreeObject(obj);
}
/**
* xsltFormatNumberFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the format-number() XSLT function
* string format-number(number, string, string?)
*/
void
xsltFormatNumberFunction(xmlXPathParserContextPtr ctxt, int nargs)
{
xmlXPathObjectPtr numberObj = NULL;
xmlXPathObjectPtr formatObj = NULL;
xmlXPathObjectPtr decimalObj = NULL;
xsltStylesheetPtr sheet;
xsltDecimalFormatPtr formatValues = NULL;
xmlChar *result;
const xmlChar *ncname;
const xmlChar *prefix = NULL;
const xmlChar *nsUri = NULL;
xsltTransformContextPtr tctxt;
tctxt = xsltXPathGetTransformContext(ctxt);
if ((tctxt == NULL) || (tctxt->inst == NULL))
return;
sheet = tctxt->style;
if (sheet == NULL)
return;
formatValues = sheet->decimalFormat;
switch (nargs) {
case 3:
CAST_TO_STRING;
decimalObj = valuePop(ctxt);
ncname = xsltSplitQName(sheet->dict, decimalObj->stringval, &prefix);
if (prefix != NULL) {
xmlNsPtr ns = xmlSearchNs(tctxt->inst->doc, tctxt->inst, prefix);
if (ns == NULL) {
xsltTransformError(tctxt, NULL, NULL,
"format-number : No namespace found for QName '%s:%s'\n",
prefix, ncname);
sheet->errors++;
ncname = NULL;
}
else {
nsUri = ns->href;
}
}
if (ncname != NULL) {
formatValues = xsltDecimalFormatGetByQName(sheet, nsUri, ncname);
}
if (formatValues == NULL) {
xsltTransformError(tctxt, NULL, NULL,
"format-number() : undeclared decimal format '%s'\n",
decimalObj->stringval);
}
/* Intentional fall-through */
case 2:
CAST_TO_STRING;
formatObj = valuePop(ctxt);
CAST_TO_NUMBER;
numberObj = valuePop(ctxt);
break;
default:
XP_ERROR(XPATH_INVALID_ARITY);
}
if (formatValues != NULL) {
if (xsltFormatNumberConversion(formatValues,
formatObj->stringval,
numberObj->floatval,
&result) == XPATH_EXPRESSION_OK) {
valuePush(ctxt, xmlXPathNewString(result));
xmlFree(result);
}
}
xmlXPathFreeObject(numberObj);
xmlXPathFreeObject(formatObj);
xmlXPathFreeObject(decimalObj);
}
/**
* xsltCleanupIds:
* @ctxt: the transformation context
* @root: the root of the resulting document
*
* This clean up ids which may have been saved in Element contents
* by xsltGenerateIdFunction() to provide stable IDs on elements.
*
* Returns the number of items cleaned or -1 in case of error
*/
int
xsltCleanupIds(xsltTransformContextPtr ctxt, xmlNodePtr root) {
xmlNodePtr cur;
int count = 0;
if ((ctxt == NULL) || (root == NULL))
return(-1);
if (root->type != XML_ELEMENT_NODE)
return(-1);
cur = root;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE) {
if (cur->content != NULL) {
cur->content = NULL;
count++;
}
if (cur->children != NULL) {
cur = cur->children;
continue;
}
}
if (cur->next != NULL) {
cur = cur->next;
continue;
}
do {
cur = cur->parent;
if (cur == NULL)
break;
if (cur == (xmlNodePtr) root) {
cur = NULL;
break;
}
if (cur->next != NULL) {
cur = cur->next;
break;
}
} while (cur != NULL);
}
fprintf(stderr, "Attributed %d IDs for element, cleaned up %d\n",
ctxt->nextid, count);
return(count);
}
/**
* xsltGenerateIdFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the generate-id() XSLT function
* string generate-id(node-set?)
*/
void
xsltGenerateIdFunction(xmlXPathParserContextPtr ctxt, int nargs){
static char base_address;
xmlNodePtr cur = NULL;
xmlXPathObjectPtr obj = NULL;
long val;
xmlChar str[30];
if (nargs == 0) {
cur = ctxt->context->node;
} else if (nargs == 1) {
xmlNodeSetPtr nodelist;
int i, ret;
if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_NODESET)) {
ctxt->error = XPATH_INVALID_TYPE;
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"generate-id() : invalid arg expecting a node-set\n");
return;
}
obj = valuePop(ctxt);
nodelist = obj->nodesetval;
if ((nodelist == NULL) || (nodelist->nodeNr <= 0)) {
xmlXPathFreeObject(obj);
valuePush(ctxt, xmlXPathNewCString(""));
return;
}
cur = nodelist->nodeTab[0];
for (i = 1;i < nodelist->nodeNr;i++) {
ret = xmlXPathCmpNodes(cur, nodelist->nodeTab[i]);
if (ret == -1)
cur = nodelist->nodeTab[i];
}
} else {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"generate-id() : invalid number of args %d\n", nargs);
ctxt->error = XPATH_INVALID_ARITY;
return;
}
if (obj)
xmlXPathFreeObject(obj);
/*
* Try to provide stable ID for generated document:
* - usually ID are computed to be placed on elements via attributes
* so using the element as the node for the ID
* - the cur->content should be a correct placeholder for this, we use
* it to hold element node numbers in xmlXPathOrderDocElems to
* speed up XPath too
* - xsltCleanupIds() clean them up before handing the XSLT output
* to the API client.
* - other nodes types use the node address method but that should
* not end up in resulting document ID
* - we can enable this by default without risk of performance issues
* only the one pass xsltCleanupIds() is added
*/
if (cur->type == XML_ELEMENT_NODE) {
if (cur->content == NULL) {
xsltTransformContextPtr tctxt;
tctxt = xsltXPathGetTransformContext(ctxt);
if (tctxt == NULL) {
val = (long)((char *)cur - (char *)&base_address);
} else {
tctxt->nextid++;
val = tctxt->nextid;
cur->content = (void *) (val);
}
} else {
val = (long) cur->content;
}
} else {
val = (long)((char *)cur - (char *)&base_address);
}
if (val >= 0) {
snprintf((char *)str, sizeof(str), "idp%ld", val);
} else {
snprintf((char *)str, sizeof(str), "idm%ld", -val);
}
valuePush(ctxt, xmlXPathNewString(str));
}
/**
* xsltSystemPropertyFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the system-property() XSLT function
* object system-property(string)
*/
void
xsltSystemPropertyFunction(xmlXPathParserContextPtr ctxt, int nargs){
xmlXPathObjectPtr obj;
xmlChar *prefix, *name;
const xmlChar *nsURI = NULL;
if (nargs != 1) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"system-property() : expects one string arg\n");
ctxt->error = XPATH_INVALID_ARITY;
return;
}
if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"system-property() : invalid arg expecting a string\n");
ctxt->error = XPATH_INVALID_TYPE;
return;
}
obj = valuePop(ctxt);
if (obj->stringval == NULL) {
valuePush(ctxt, xmlXPathNewString((const xmlChar *)""));
} else {
name = xmlSplitQName2(obj->stringval, &prefix);
if (name == NULL) {
name = xmlStrdup(obj->stringval);
} else {
nsURI = xmlXPathNsLookup(ctxt->context, prefix);
if (nsURI == NULL) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"system-property() : prefix %s is not bound\n", prefix);
}
}
if (xmlStrEqual(nsURI, XSLT_NAMESPACE)) {
#ifdef DOCBOOK_XSL_HACK
if (xmlStrEqual(name, (const xmlChar *)"vendor")) {
xsltStylesheetPtr sheet;
xsltTransformContextPtr tctxt;
tctxt = xsltXPathGetTransformContext(ctxt);
if ((tctxt != NULL) && (tctxt->inst != NULL) &&
(xmlStrEqual(tctxt->inst->name, BAD_CAST "variable")) &&
(tctxt->inst->parent != NULL) &&
(xmlStrEqual(tctxt->inst->parent->name,
BAD_CAST "template")))
sheet = tctxt->style;
else
sheet = NULL;
if ((sheet != NULL) && (sheet->doc != NULL) &&
(sheet->doc->URL != NULL) &&
(xmlStrstr(sheet->doc->URL,
(const xmlChar *)"chunk") != NULL)) {
valuePush(ctxt, xmlXPathNewString(
(const xmlChar *)"libxslt (SAXON 6.2 compatible)"));
} else {
valuePush(ctxt, xmlXPathNewString(
(const xmlChar *)XSLT_DEFAULT_VENDOR));
}
} else
#else
if (xmlStrEqual(name, (const xmlChar *)"vendor")) {
valuePush(ctxt, xmlXPathNewString(
(const xmlChar *)XSLT_DEFAULT_VENDOR));
} else
#endif
if (xmlStrEqual(name, (const xmlChar *)"version")) {
valuePush(ctxt, xmlXPathNewString(
(const xmlChar *)XSLT_DEFAULT_VERSION));
} else if (xmlStrEqual(name, (const xmlChar *)"vendor-url")) {
valuePush(ctxt, xmlXPathNewString(
(const xmlChar *)XSLT_DEFAULT_URL));
} else {
valuePush(ctxt, xmlXPathNewString((const xmlChar *)""));
}
} else {
valuePush(ctxt, xmlXPathNewString((const xmlChar *)""));
}
if (name != NULL)
xmlFree(name);
if (prefix != NULL)
xmlFree(prefix);
}
xmlXPathFreeObject(obj);
}
/**
* xsltElementAvailableFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the element-available() XSLT function
* boolean element-available(string)
*/
void
xsltElementAvailableFunction(xmlXPathParserContextPtr ctxt, int nargs){
xmlXPathObjectPtr obj;
xmlChar *prefix, *name;
const xmlChar *nsURI = NULL;
xsltTransformContextPtr tctxt;
if (nargs != 1) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"element-available() : expects one string arg\n");
ctxt->error = XPATH_INVALID_ARITY;
return;
}
xmlXPathStringFunction(ctxt, 1);
if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"element-available() : invalid arg expecting a string\n");
ctxt->error = XPATH_INVALID_TYPE;
return;
}
obj = valuePop(ctxt);
tctxt = xsltXPathGetTransformContext(ctxt);
if ((tctxt == NULL) || (tctxt->inst == NULL)) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"element-available() : internal error tctxt == NULL\n");
xmlXPathFreeObject(obj);
valuePush(ctxt, xmlXPathNewBoolean(0));
return;
}
name = xmlSplitQName2(obj->stringval, &prefix);
if (name == NULL) {
xmlNsPtr ns;
name = xmlStrdup(obj->stringval);
ns = xmlSearchNs(tctxt->inst->doc, tctxt->inst, NULL);
if (ns != NULL) nsURI = ns->href;
} else {
nsURI = xmlXPathNsLookup(ctxt->context, prefix);
if (nsURI == NULL) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"element-available() : prefix %s is not bound\n", prefix);
}
}
if (xsltExtElementLookup(tctxt, name, nsURI) != NULL) {
valuePush(ctxt, xmlXPathNewBoolean(1));
} else {
valuePush(ctxt, xmlXPathNewBoolean(0));
}
xmlXPathFreeObject(obj);
if (name != NULL)
xmlFree(name);
if (prefix != NULL)
xmlFree(prefix);
}
/**
* xsltFunctionAvailableFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the function-available() XSLT function
* boolean function-available(string)
*/
void
xsltFunctionAvailableFunction(xmlXPathParserContextPtr ctxt, int nargs){
xmlXPathObjectPtr obj;
xmlChar *prefix, *name;
const xmlChar *nsURI = NULL;
if (nargs != 1) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"function-available() : expects one string arg\n");
ctxt->error = XPATH_INVALID_ARITY;
return;
}
xmlXPathStringFunction(ctxt, 1);
if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"function-available() : invalid arg expecting a string\n");
ctxt->error = XPATH_INVALID_TYPE;
return;
}
obj = valuePop(ctxt);
name = xmlSplitQName2(obj->stringval, &prefix);
if (name == NULL) {
name = xmlStrdup(obj->stringval);
} else {
nsURI = xmlXPathNsLookup(ctxt->context, prefix);
if (nsURI == NULL) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"function-available() : prefix %s is not bound\n", prefix);
}
}
if (xmlXPathFunctionLookupNS(ctxt->context, name, nsURI) != NULL) {
valuePush(ctxt, xmlXPathNewBoolean(1));
} else {
valuePush(ctxt, xmlXPathNewBoolean(0));
}
xmlXPathFreeObject(obj);
if (name != NULL)
xmlFree(name);
if (prefix != NULL)
xmlFree(prefix);
}
/**
* xsltCurrentFunction:
* @ctxt: the XPath Parser context
* @nargs: the number of arguments
*
* Implement the current() XSLT function
* node-set current()
*/
static void
xsltCurrentFunction(xmlXPathParserContextPtr ctxt, int nargs){
xsltTransformContextPtr tctxt;
if (nargs != 0) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"current() : function uses no argument\n");
ctxt->error = XPATH_INVALID_ARITY;
return;
}
tctxt = xsltXPathGetTransformContext(ctxt);
if (tctxt == NULL) {
xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL,
"current() : internal error tctxt == NULL\n");
valuePush(ctxt, xmlXPathNewNodeSet(NULL));
} else {
valuePush(ctxt, xmlXPathNewNodeSet(tctxt->node)); /* current */
}
}
/************************************************************************
* *
* Registration of XSLT and libxslt functions *
* *
************************************************************************/
/**
* xsltRegisterAllFunctions:
* @ctxt: the XPath context
*
* Registers all default XSLT functions in this context
*/
void
xsltRegisterAllFunctions(xmlXPathContextPtr ctxt)
{
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "current",
xsltCurrentFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "document",
xsltDocumentFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "key", xsltKeyFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "unparsed-entity-uri",
xsltUnparsedEntityURIFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "format-number",
xsltFormatNumberFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "generate-id",
xsltGenerateIdFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "system-property",
xsltSystemPropertyFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "element-available",
xsltElementAvailableFunction);
xmlXPathRegisterFunc(ctxt, (const xmlChar *) "function-available",
xsltFunctionAvailableFunction);
}
|