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610 lines
19 KiB
610 lines
19 KiB
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/***************************************************************************
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nodeview_cmds.c - node viewing commands for xsldbg
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-------------------
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begin : Wed Nov 21 2001
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copyright : (C) 2001 by Keith Isdale
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email : k_isdale@tpg.com.au
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "xsldbg.h"
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#include <libxml/xpathInternals.h>
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#include <libxml/HTMLparser.h>
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#include <libxml/HTMLtree.h>
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#include <ctype.h> /* for isspace*/
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#include "debugXSL.h"
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#include "arraylist.h"
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#include "breakpoint.h"
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#include "xsldbgmsg.h"
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#include "xsldbgthread.h" /* for getThreadStatus */
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#include "files.h"
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#include "options.h"
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/* -----------------------------------------
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Private function declarations for nodeview_cmds.c
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-------------------------------------------*/
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static xmlChar nodeViewBuffer[500];
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static int printVariableValue = 0;
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/*
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* xslDbgShellPrintNames:
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* Print a name of variable found by scanning variable table
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* It is used by print_variable function.
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* @payload : not used
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* @data : not used
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* @name : the variable name
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*/
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void *xslDbgShellPrintNames(void *payload,
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void *data, xmlChar * name);
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/**
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* xslDbgCatToFile:
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* @node : Is valid
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* @file : Is valid
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*
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* Send the results of cat command in @node to @file
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*/
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static void xslDbgCatToFile(xmlNodePtr node, FILE * file);
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/**
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* printXPathObject:
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* @item : XPath object to print
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* @xPath : The XPath used to find item
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*
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* Print an XPath object
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*
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* Returns 1 on success,
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* 0 otherwise
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*/
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static int printXPathObject(xmlXPathObjectPtr item, xmlChar* xPath);
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/* -------------------------------------
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End private functions
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---------------------------------------*/
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/**
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* xslDbgShellPrintList:
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* @ctxt: The current shell context
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* @arg: What xpath to display and in UTF-8
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* @dir: If 1 print in dir mode?,
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* otherwise ls mode
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*
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* Print list of nodes in either ls or dir format
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*
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* Returns 1 on success,
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* 0 otherwise
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*/
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int
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xslDbgShellPrintList(xmlShellCtxtPtr ctxt, xmlChar * arg, int dir)
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{
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xmlXPathObjectPtr list;
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int result = 0;
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if (!ctxt || !arg) {
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#ifdef WITH_XSLDBG_DEBUG_PROCESS
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xsltGenericError(xsltGenericErrorContext,
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"Error: NULL arguments provided\n");
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#endif
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return result;
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}
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if (arg[0] == 0) {
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if (dir)
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xmlShellDir(ctxt, NULL, ctxt->node, NULL);
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else
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xmlShellList(ctxt, NULL, ctxt->node, NULL);
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result = 1; /*assume that this worked */
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} else {
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ctxt->pctxt->node = ctxt->node;
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ctxt->pctxt->node = ctxt->node;
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if (!xmlXPathNsLookup(ctxt->pctxt, (xmlChar *) "xsl"))
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xmlXPathRegisterNs(ctxt->pctxt, (xmlChar *) "xsl",
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XSLT_NAMESPACE);
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list = xmlXPathEval(arg, ctxt->pctxt);
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if (list != NULL) {
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switch (list->type) {
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case XPATH_NODESET:{
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int indx;
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for (indx = 0;
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indx < list->nodesetval->nodeNr; indx++) {
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if (dir)
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xmlShellList(ctxt, NULL,
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list->nodesetval->
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nodeTab[indx], NULL);
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else
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xmlShellList(ctxt, NULL,
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list->nodesetval->
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nodeTab[indx], NULL);
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}
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result = 1;
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break;
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}
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default:
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xmlShellPrintXPathError(list->type, (char *) arg);
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}
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xmlXPathFreeObject(list);
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} else {
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xsldbgGenericErrorFunc(i18n("Error: XPath %1 results in an empty Node Set.\n").arg(xsldbgText(arg)));
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}
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ctxt->pctxt->node = NULL;
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}
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return result;
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}
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/**
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* xslDbgCatToFile:
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* @node : Is valid
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* @file : Is valid
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*
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* Send the results of cat command in @node to @file
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*/
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void
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xslDbgCatToFile(xmlNodePtr node, FILE * file)
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{
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if (!node || !file)
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return;
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/* assume that HTML usage is enabled */
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if (node->doc->type == XML_HTML_DOCUMENT_NODE) {
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if (node->type == XML_HTML_DOCUMENT_NODE)
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htmlDocDump(file, (htmlDocPtr) node);
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else
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htmlNodeDumpFile(file, node->doc, node);
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} else if (node->type == XML_DOCUMENT_NODE) {
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/* turn off encoding for the moment and just dump UTF-8
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* which will be converted by xsldbgGeneralErrorFunc */
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xmlDocPtr doc = (xmlDocPtr) node;
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const xmlChar *encoding = doc->encoding;
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if (encoding) {
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xsldbgGenericErrorFunc(i18n("Information: Temporarily setting document's encoding to UTF-8. Previously was %1.\n").arg(xsldbgText(encoding)));
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}
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doc->encoding = (xmlChar *) "UTF-8";
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xmlDocDump(file, (xmlDocPtr) node);
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doc->encoding = encoding;
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} else {
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xmlElemDump(file, node->doc, node);
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}
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}
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/**
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* printXPathObject:
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* @item : XPath object to print
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* @xPath : The XPath used to find item
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*
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* Print an XPath object
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*
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* Returns 1 on success,
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* 0 otherwise
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*/
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static int
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printXPathObject(xmlXPathObjectPtr item, xmlChar* xPath){
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int result = 0;
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if (item){
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switch (item->type) {
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case XPATH_BOOLEAN:
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xsltGenericError(xsltGenericErrorContext,
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"= %s\n%s\n", xPath,
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xmlBoolToText(item->boolval));
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result = 1;
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break;
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case XPATH_NUMBER:
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xsltGenericError(xsltGenericErrorContext,
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"= %s\n%0g\n", xPath, item->floatval);
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result = 1;
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break;
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/* case XPATH_NODESET:*/
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default:{
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/* We may need to convert this XPath to a string,
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plus ensure that we print required the number of
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lines of text */
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int indx;
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const char *fileName = filesTempFileName(0);
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FILE *file = NULL;
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if (!fileName)
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break;
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file = fopen(fileName, "w+");
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if (!file) {
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xsldbgGenericErrorFunc(i18n("Error: Unable to save temporary results to %1.\n").arg(xsldbgText(fileName)));
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break;
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} else {
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fprintf(file, "= %s\n", xPath);
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switch(item->type){
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case XPATH_NODESET:
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if (item->nodesetval){
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for (indx = 0;
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indx < item->nodesetval->nodeNr; indx++){
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xslDbgCatToFile(item->nodesetval->
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nodeTab[indx], file);
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}
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} else {
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xsldbgGenericErrorFunc(i18n("Error: XPath %1 results in an empty Node Set.\n").arg(xsldbgText(xPath)));
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}
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break;
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case XPATH_STRING:
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if (item->stringval)
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fprintf(file, "\'%s\'", item->stringval);
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else
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fprintf(file, "%s", i18n("NULL string value supplied.").utf8().data());
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break;
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default:{
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xmlXPathObjectPtr tempObj =
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xmlXPathObjectCopy(item);
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if (tempObj)
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tempObj = xmlXPathConvertString(tempObj);
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if (tempObj && tempObj->stringval){
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fprintf(file, "%s", tempObj->stringval);
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}else{
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fprintf(file, "%s", i18n("Unable to convert XPath to string.").utf8().data());
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}
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if (tempObj)
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xmlXPathFreeObject(tempObj);
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}
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break;
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fprintf(file,"\n");
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} /* inner switch statement */
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if (getThreadStatus() == XSLDBG_MSG_THREAD_RUN) {
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fclose(file);
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file = NULL;
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/* send the data to application */
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notifyXsldbgApp(XSLDBG_MSG_FILEOUT, fileName);
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} else {
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int lineCount = 0, gdbModeEnabled = 0;
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/* save the value of option to speed things up
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* a bit */
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gdbModeEnabled =
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optionsGetIntOption(OPTIONS_GDB);
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rewind(file);
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/* when gdb mode is enable then only print the first
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* GDB_LINES_TO_PRINT lines */
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while (!feof(file)) {
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if (fgets
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((char *) nodeViewBuffer, sizeof(nodeViewBuffer),
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file))
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xsltGenericError
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(xsltGenericErrorContext, "%s",
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nodeViewBuffer);
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if (gdbModeEnabled) {
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lineCount++;
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/* there is an overhead of two lines
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* when print expression values */
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if (lineCount ==
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GDB_LINES_TO_PRINT + 2) {
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xsltGenericError
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(xsltGenericErrorContext,
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"...");
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break;
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}
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}
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}
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xsltGenericError
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(xsltGenericErrorContext, "\n");
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}
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if (file)
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fclose(file);
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result = 1;
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break;
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}
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}
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}
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}
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return result;
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}
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/**
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* xslDbgShellCat:
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* @styleCtxt: the current stylesheet context
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* @ctxt: The current shell context
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* @arg: The xpath to print (in UTF-8)
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*
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* Print the result of an xpath expression. This can include variables
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* if styleCtxt is not NULL
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*
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* Returns 1 on success,
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* 0 otherwise
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*/
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int
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xslDbgShellCat(xsltTransformContextPtr styleCtxt, xmlShellCtxtPtr ctxt,
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xmlChar * arg)
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{
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xmlXPathObjectPtr list;
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int result = 0;
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static const char * QUIET_STR = "-q";
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bool silenceCtxtErrors = false;
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if ((arg == NULL) || (xmlStrLen(arg) == 0))
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arg = (xmlChar *) ".";
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/* Do we quietly ingore style context errors */
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if (strncasecmp((char*)arg, QUIET_STR, strlen(QUIET_STR))== 0){
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silenceCtxtErrors = true;
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arg = arg + strlen(QUIET_STR);
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while (isspace(*arg)){
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arg++;
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}
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}
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if (!styleCtxt || !ctxt || !ctxt->node) {
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if (!(!xsldbgReachedFirstTemplate && silenceCtxtErrors))
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xsldbgGenericErrorFunc(i18n("Warning: Unable to print expression. No stylesheet was properly loaded.\n"));
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return 0;
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}
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if ((arg == NULL) || (xmlStrLen(arg) == 0))
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arg = (xmlChar *) ".";
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ctxt->pctxt->node = ctxt->node;
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if (!styleCtxt) {
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list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt);
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} else {
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xmlNodePtr savenode = styleCtxt->xpathCtxt->node;
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ctxt->pctxt->node = ctxt->node;
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styleCtxt->xpathCtxt->node = ctxt->node;
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if (!xmlXPathNsLookup(styleCtxt->xpathCtxt, (xmlChar *) "xsl"))
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xmlXPathRegisterNs(styleCtxt->xpathCtxt, (xmlChar *) "xsl",
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XSLT_NAMESPACE);
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list = xmlXPathEval((xmlChar *) arg, styleCtxt->xpathCtxt);
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styleCtxt->xpathCtxt->node = savenode;
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}
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if (list != NULL) {
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result = printXPathObject(list, arg);
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xmlXPathFreeObject(list);
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} else {
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xsldbgGenericErrorFunc(i18n("Error: XPath %1 results in an empty Node Set.\n").arg(xsldbgText(arg)));
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}
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ctxt->pctxt->node = NULL;
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return result;
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}
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/* only used by xslDbgPrintNames and xslDbgPrintVariable cound number of variables */
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static int varCount;
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/*
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* xslDbgShellPrintNames:
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* Print a name of variable found by scanning variable table
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* It is used by print_variable function.
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* @payload : Global variable of type xsltStackElemPtr
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* @data : not used
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* @name : the variable name
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*/
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void *
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xslDbgShellPrintNames(void *payload,
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void *data, xmlChar * name)
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{
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Q_UNUSED(payload);
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Q_UNUSED(data);
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if (getThreadStatus() == XSLDBG_MSG_THREAD_RUN) {
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notifyListQueue(payload);
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} else if (payload && name) {
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xmlChar * fullQualifiedName = nodeViewBuffer;
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xsltStackElemPtr item = (xsltStackElemPtr)payload;
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if (item->nameURI == NULL){
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snprintf((char*)fullQualifiedName, sizeof(nodeViewBuffer), "$%s", item->name);
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}else{
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snprintf((char*)fullQualifiedName, sizeof(nodeViewBuffer), "$%s:%s",
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item->nameURI, item->name);
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}
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if (printVariableValue == 0){
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xsldbgGenericErrorFunc(i18n(" Global %1\n").arg(xsldbgText(fullQualifiedName)));
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}else{
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if (item->computed == 1){
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xsldbgGenericErrorFunc(i18n(" Global "));
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printXPathObject(item->value, fullQualifiedName);
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}else if (item->tree){
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xsldbgGenericErrorFunc(i18n(" Global = %1\n").arg(xsldbgText(fullQualifiedName)));
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xslDbgCatToFile(item->tree, stderr);
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}else if (item->select){
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xsldbgGenericErrorFunc(i18n(" Global = %1\n%2").arg(xsldbgText(fullQualifiedName)).arg(xsldbgText(item->select)));
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}else{
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/* can't find a value give only a variable name an error message */
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xsldbgGenericErrorFunc(i18n(" Global = %1\n%2").arg(xsldbgText(fullQualifiedName)).arg(i18n("Warning: No value assigned to variable.\n")));
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}
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xsltGenericError(xsltGenericErrorContext, "\n\032\032\n");
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}
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varCount++;
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}
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return NULL;
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}
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/**
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* xslDbgShellPrintVariable:
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* @styleCtxt: The current stylesheet context
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* @arg: The name of variable to look for '$' prefix is optional and in UTF-8
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* @type: A valid VariableTypeEnum
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*
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* Print the value variable specified by args.
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*
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* Returns 1 on success,
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* 0 otherwise
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*/
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int
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xslDbgShellPrintVariable(xsltTransformContextPtr styleCtxt, xmlChar * arg,
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VariableTypeEnum type)
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{
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int result = 0;
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/* command argument to include both name and its value */
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static const char * FULLNAME_STR = "-f";
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/* Quietly exit if an invalid stylesheet is provided */
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static const char * QUIET_STR = "-q";
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bool silenceCtxtErrors = false;
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if (!arg) {
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#ifdef WITH_XSLDBG_DEBUG_PROCESS
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xsltGenericError(xsltGenericErrorContext,
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"Error: NULL argument provided\n");
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#endif
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return result;
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}
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varCount = 0;
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/* Do we quietly ingore style context errors */
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if (strncasecmp((char*)arg, QUIET_STR, strlen(QUIET_STR))== 0){
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silenceCtxtErrors = true;
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arg = arg + strlen(QUIET_STR);
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while (isspace(*arg)){
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arg++;
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}
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}
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if (!styleCtxt) {
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if (!(!xsldbgReachedFirstTemplate && silenceCtxtErrors))
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xsldbgGenericErrorFunc(i18n("Error: Debugger has no files loaded or libxslt has not reached a template.\nTry reloading files or taking more steps.\n"));
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return result;
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}
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/* Do we include the name as well as its value */
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if (strncasecmp((char*)arg, FULLNAME_STR, strlen(FULLNAME_STR))== 0){
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printVariableValue = 1;
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arg = arg + strlen(FULLNAME_STR);
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while (isspace(*arg)){
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arg++;
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}
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}
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if (arg[0] == 0) {
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/* list variables of type requested */
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if (type == DEBUG_GLOBAL_VAR) {
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if (styleCtxt->globalVars) {
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if (getThreadStatus() == XSLDBG_MSG_THREAD_RUN) {
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notifyListStart(XSLDBG_MSG_GLOBALVAR_CHANGED);
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/* list global variables */
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xmlHashScan(styleCtxt->globalVars,
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(xmlHashScanner) xslDbgShellPrintNames,
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NULL);
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notifyListSend();
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} else
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/* list global variables */
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xmlHashScan(styleCtxt->globalVars,
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(xmlHashScanner) xslDbgShellPrintNames,
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NULL);
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result = 1;
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/* ensure that the locals follow imediately after the
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* globals when in gdb mode */
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if (optionsGetIntOption(OPTIONS_GDB) == 0)
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xsltGenericError(xsltGenericErrorContext, "\n");
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} else {
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if (getThreadStatus() != XSLDBG_MSG_THREAD_RUN) {
|
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/* Don't show this message when running as a thread as it
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* is annoying */
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xsldbgGenericErrorFunc(i18n("Error: Libxslt has not initialized variables yet; try stepping to a template.\n"));
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} else {
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/* send an empty list */
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notifyListStart(XSLDBG_MSG_GLOBALVAR_CHANGED);
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notifyListSend();
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result = 1;
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}
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}
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} else {
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/* list local variables */
|
|
if (styleCtxt->varsNr && styleCtxt->varsTab) {
|
|
if (getThreadStatus() == XSLDBG_MSG_THREAD_RUN) {
|
|
notifyListStart(XSLDBG_MSG_LOCALVAR_CHANGED);
|
|
for (int i = styleCtxt->varsNr; i > styleCtxt->varsBase; i--) {
|
|
xsltStackElemPtr item = styleCtxt->varsTab[i-1];
|
|
while (item) {
|
|
notifyListQueue(item);
|
|
item = item->next;
|
|
}
|
|
}
|
|
notifyListSend();
|
|
} else {
|
|
xmlChar * fullQualifiedName = nodeViewBuffer;
|
|
for (int i = styleCtxt->varsNr; i > styleCtxt->varsBase; i--) {
|
|
xsltStackElemPtr item = styleCtxt->varsTab[i-1];
|
|
while (item) {
|
|
if (item->name) {
|
|
if (item->nameURI == NULL){
|
|
snprintf((char*)fullQualifiedName, sizeof(nodeViewBuffer), "$%s",
|
|
item->name);
|
|
}else{
|
|
|
|
snprintf((char*)fullQualifiedName, sizeof(nodeViewBuffer), "$%s:%s",
|
|
item->nameURI, item->name);
|
|
}
|
|
if (printVariableValue == 0){
|
|
xsldbgGenericErrorFunc(i18n(" Local %1").arg(xsldbgText(fullQualifiedName)));
|
|
}else{
|
|
if (item->computed == 1){
|
|
xsldbgGenericErrorFunc(i18n(" Local "));
|
|
printXPathObject(item->value, fullQualifiedName);
|
|
}else if (item->tree){
|
|
xsldbgGenericErrorFunc(i18n(" Local = %1\n").arg(xsldbgText(fullQualifiedName)));
|
|
xslDbgCatToFile(item->tree, stderr);
|
|
}else if (item->select){
|
|
xsldbgGenericErrorFunc(i18n(" Local = %1\n%2").arg(xsldbgText(fullQualifiedName)).arg(xsldbgText(item->select)));
|
|
}else{
|
|
/* can't find a value give only a variable name and an error */
|
|
xsldbgGenericErrorFunc(i18n(" Local = %1\n%2").arg(xsldbgText(fullQualifiedName)).arg(i18n("Warning: No value assigned to variable.\n")));
|
|
}
|
|
}
|
|
xsltGenericError(xsltGenericErrorContext, "\n\032\032\n");
|
|
}
|
|
item = item->next;
|
|
}
|
|
}
|
|
}
|
|
result = 1;
|
|
xsltGenericError(xsltGenericErrorContext, "\n");
|
|
} else {
|
|
if (getThreadStatus() != XSLDBG_MSG_THREAD_RUN) {
|
|
/* Don't show this message when running as a thread as it
|
|
* is annoying */
|
|
xsldbgGenericErrorFunc(i18n("Error: Libxslt has not initialized variables yet; try stepping past the xsl:param elements in the template.\n"));
|
|
} else {
|
|
/* send an empty list */
|
|
notifyListStart(XSLDBG_MSG_LOCALVAR_CHANGED);
|
|
notifyListSend();
|
|
result = 1;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/* Display the value of variable */
|
|
if (arg[0] == '$') {
|
|
printXPathObject(xmlXPathEval(arg, styleCtxt->xpathCtxt), arg);
|
|
xsltGenericError(xsltGenericErrorContext, "\032\032\n");
|
|
} else {
|
|
xmlStrCpy(nodeViewBuffer, "$");
|
|
xmlStrCat(nodeViewBuffer, arg);
|
|
printXPathObject(xmlXPathEval((xmlChar*)nodeViewBuffer,styleCtxt->xpathCtxt),
|
|
(xmlChar*)nodeViewBuffer);
|
|
xsltGenericError(xsltGenericErrorContext, "\032\032\n");
|
|
}
|
|
|
|
}
|
|
|
|
printVariableValue = 0;
|
|
return result;
|
|
}
|