| /* |
| * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "XSLTUnicodeSort.h" |
| |
| #if ENABLE(XSLT) |
| |
| #include <libxslt/templates.h> |
| #include <libxslt/xsltutils.h> |
| #include <wtf/text/WTFString.h> |
| #include <wtf/unicode/Collator.h> |
| |
| #if PLATFORM(MAC) |
| #include "SoftLinking.h" |
| #endif |
| |
| #if PLATFORM(MAC) |
| |
| SOFT_LINK_LIBRARY(libxslt) |
| SOFT_LINK(libxslt, xsltComputeSortResult, xmlXPathObjectPtr*, (xsltTransformContextPtr ctxt, xmlNodePtr sort), (ctxt, sort)) |
| SOFT_LINK(libxslt, xsltEvalAttrValueTemplate, xmlChar*, (xsltTransformContextPtr ctxt, xmlNodePtr node, const xmlChar *name, const xmlChar *ns), (ctxt, node, name, ns)) |
| |
| static void xsltTransformErrorTrampoline(xsltTransformContextPtr, xsltStylesheetPtr, xmlNodePtr, const char* message, ...) WTF_ATTRIBUTE_PRINTF(4, 5); |
| |
| void xsltTransformErrorTrampoline(xsltTransformContextPtr context, xsltStylesheetPtr style, xmlNodePtr node, const char* message, ...) |
| { |
| va_list args; |
| va_start(args, message); |
| char* messageWithArgs; |
| vasprintf(&messageWithArgs, message, args); |
| va_end(args); |
| |
| static void (*xsltTransformErrorPointer)(xsltTransformContextPtr, xsltStylesheetPtr, xmlNodePtr, const char*, ...) WTF_ATTRIBUTE_PRINTF(4, 5) |
| = reinterpret_cast<void (*)(xsltTransformContextPtr, xsltStylesheetPtr, xmlNodePtr, const char*, ...)>(dlsym(libxsltLibrary(), "xsltTransformError")); |
| xsltTransformErrorPointer(context, style, node, "%s", messageWithArgs); |
| |
| free(messageWithArgs); |
| } |
| |
| #define xsltTransformError xsltTransformErrorTrampoline |
| |
| #endif |
| |
| namespace WebCore { |
| |
| // Based on default implementation from libxslt 1.1.22 and xsltICUSort.c example. |
| void xsltUnicodeSortFunction(xsltTransformContextPtr ctxt, xmlNodePtr *sorts, int nbsorts) |
| { |
| #ifdef XSLT_REFACTORED |
| xsltStyleItemSortPtr comp; |
| #else |
| xsltStylePreCompPtr comp; |
| #endif |
| xmlXPathObjectPtr *resultsTab[XSLT_MAX_SORT]; |
| xmlXPathObjectPtr *results = NULL, *res; |
| xmlNodeSetPtr list = NULL; |
| int descending, number, desc, numb; |
| int len = 0; |
| int i, j, incr; |
| int tst; |
| int depth; |
| xmlNodePtr node; |
| xmlXPathObjectPtr tmp; |
| int tempstype[XSLT_MAX_SORT], temporder[XSLT_MAX_SORT]; |
| |
| if ((ctxt == NULL) || (sorts == NULL) || (nbsorts <= 0) || |
| (nbsorts >= XSLT_MAX_SORT)) |
| return; |
| if (sorts[0] == NULL) |
| return; |
| comp = static_cast<xsltStylePreComp*>(sorts[0]->psvi); |
| if (comp == NULL) |
| return; |
| |
| list = ctxt->nodeList; |
| if ((list == NULL) || (list->nodeNr <= 1)) |
| return; /* nothing to do */ |
| |
| for (j = 0; j < nbsorts; j++) { |
| comp = static_cast<xsltStylePreComp*>(sorts[j]->psvi); |
| tempstype[j] = 0; |
| if ((comp->stype == NULL) && (comp->has_stype != 0)) { |
| comp->stype = |
| xsltEvalAttrValueTemplate(ctxt, sorts[j], |
| (const xmlChar *) "data-type", |
| XSLT_NAMESPACE); |
| if (comp->stype != NULL) { |
| tempstype[j] = 1; |
| if (xmlStrEqual(comp->stype, (const xmlChar *) "text")) |
| comp->number = 0; |
| else if (xmlStrEqual(comp->stype, (const xmlChar *) "number")) |
| comp->number = 1; |
| else { |
| xsltTransformError(ctxt, NULL, sorts[j], |
| "xsltDoSortFunction: no support for data-type = %s\n", |
| comp->stype); |
| comp->number = 0; /* use default */ |
| } |
| } |
| } |
| temporder[j] = 0; |
| if ((comp->order == NULL) && (comp->has_order != 0)) { |
| comp->order = xsltEvalAttrValueTemplate(ctxt, sorts[j], |
| (const xmlChar *) "order", |
| XSLT_NAMESPACE); |
| if (comp->order != NULL) { |
| temporder[j] = 1; |
| if (xmlStrEqual(comp->order, (const xmlChar *) "ascending")) |
| comp->descending = 0; |
| else if (xmlStrEqual(comp->order, |
| (const xmlChar *) "descending")) |
| comp->descending = 1; |
| else { |
| xsltTransformError(ctxt, NULL, sorts[j], |
| "xsltDoSortFunction: invalid value %s for order\n", |
| comp->order); |
| comp->descending = 0; /* use default */ |
| } |
| } |
| } |
| } |
| |
| len = list->nodeNr; |
| |
| resultsTab[0] = xsltComputeSortResult(ctxt, sorts[0]); |
| for (i = 1;i < XSLT_MAX_SORT;i++) |
| resultsTab[i] = NULL; |
| |
| results = resultsTab[0]; |
| |
| comp = static_cast<xsltStylePreComp*>(sorts[0]->psvi); |
| descending = comp->descending; |
| number = comp->number; |
| if (results == NULL) |
| return; |
| |
| // We are passing a language identifier to a function that expects a locale identifier. |
| // The implementation of Collator should be lenient, and accept both "en-US" and "en_US", for example. |
| // This lets an author to really specify sorting rules, e.g. "de_DE@collation=phonebook", which isn't |
| // possible with language alone. |
| Collator collator(comp->has_lang ? (const char*)comp->lang : "en"); |
| collator.setOrderLowerFirst(comp->lower_first); |
| |
| /* Shell's sort of node-set */ |
| for (incr = len / 2; incr > 0; incr /= 2) { |
| for (i = incr; i < len; i++) { |
| j = i - incr; |
| if (results[i] == NULL) |
| continue; |
| |
| while (j >= 0) { |
| if (results[j] == NULL) |
| tst = 1; |
| else { |
| if (number) { |
| /* We make NaN smaller than number in accordance |
| with XSLT spec */ |
| if (xmlXPathIsNaN(results[j]->floatval)) { |
| if (xmlXPathIsNaN(results[j + incr]->floatval)) |
| tst = 0; |
| else |
| tst = -1; |
| } else if (xmlXPathIsNaN(results[j + incr]->floatval)) |
| tst = 1; |
| else if (results[j]->floatval == |
| results[j + incr]->floatval) |
| tst = 0; |
| else if (results[j]->floatval > |
| results[j + incr]->floatval) |
| tst = 1; |
| else tst = -1; |
| } else { |
| String str1 = String::fromUTF8((const char*)results[j]->stringval); |
| String str2 = String::fromUTF8((const char*)results[j + incr]->stringval); |
| tst = collator.collate(str1.characters(), str1.length(), str2.characters(), str2.length()); |
| } |
| if (descending) |
| tst = -tst; |
| } |
| if (tst == 0) { |
| /* |
| * Okay we need to use multi level sorts |
| */ |
| depth = 1; |
| while (depth < nbsorts) { |
| if (sorts[depth] == NULL) |
| break; |
| comp = static_cast<xsltStylePreComp*>(sorts[depth]->psvi); |
| if (comp == NULL) |
| break; |
| desc = comp->descending; |
| numb = comp->number; |
| |
| /* |
| * Compute the result of the next level for the |
| * full set, this might be optimized ... or not |
| */ |
| if (resultsTab[depth] == NULL) |
| resultsTab[depth] = xsltComputeSortResult(ctxt, |
| sorts[depth]); |
| res = resultsTab[depth]; |
| if (res == NULL) |
| break; |
| if (res[j] == NULL) { |
| if (res[j+incr] != NULL) |
| tst = 1; |
| } else { |
| if (numb) { |
| /* We make NaN smaller than number in |
| accordance with XSLT spec */ |
| if (xmlXPathIsNaN(res[j]->floatval)) { |
| if (xmlXPathIsNaN(res[j + |
| incr]->floatval)) |
| tst = 0; |
| else |
| tst = -1; |
| } else if (xmlXPathIsNaN(res[j + incr]-> |
| floatval)) |
| tst = 1; |
| else if (res[j]->floatval == res[j + incr]-> |
| floatval) |
| tst = 0; |
| else if (res[j]->floatval > |
| res[j + incr]->floatval) |
| tst = 1; |
| else tst = -1; |
| } else { |
| String str1 = String::fromUTF8((const char*)res[j]->stringval); |
| String str2 = String::fromUTF8((const char*)res[j + incr]->stringval); |
| tst = collator.collate(str1.characters(), str1.length(), str2.characters(), str2.length()); |
| } |
| if (desc) |
| tst = -tst; |
| } |
| |
| /* |
| * if we still can't differenciate at this level |
| * try one level deeper. |
| */ |
| if (tst != 0) |
| break; |
| depth++; |
| } |
| } |
| if (tst == 0) { |
| tst = results[j]->index > results[j + incr]->index; |
| } |
| if (tst > 0) { |
| tmp = results[j]; |
| results[j] = results[j + incr]; |
| results[j + incr] = tmp; |
| node = list->nodeTab[j]; |
| list->nodeTab[j] = list->nodeTab[j + incr]; |
| list->nodeTab[j + incr] = node; |
| depth = 1; |
| while (depth < nbsorts) { |
| if (sorts[depth] == NULL) |
| break; |
| if (resultsTab[depth] == NULL) |
| break; |
| res = resultsTab[depth]; |
| tmp = res[j]; |
| res[j] = res[j + incr]; |
| res[j + incr] = tmp; |
| depth++; |
| } |
| j -= incr; |
| } else |
| break; |
| } |
| } |
| } |
| |
| for (j = 0; j < nbsorts; j++) { |
| comp = static_cast<xsltStylePreComp*>(sorts[j]->psvi); |
| if (tempstype[j] == 1) { |
| /* The data-type needs to be recomputed each time */ |
| xmlFree((void *)(comp->stype)); |
| comp->stype = NULL; |
| } |
| if (temporder[j] == 1) { |
| /* The order needs to be recomputed each time */ |
| xmlFree((void *)(comp->order)); |
| comp->order = NULL; |
| } |
| if (resultsTab[j] != NULL) { |
| for (i = 0;i < len;i++) |
| xmlXPathFreeObject(resultsTab[j][i]); |
| xmlFree(resultsTab[j]); |
| } |
| } |
| } |
| |
| } |
| |
| #endif |
