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115 lines
4.3 KiB
115 lines
4.3 KiB
15 years ago
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/***************************************************************************
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variable_cmds.c - description
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-------------------
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begin : Sun Dec 30 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 <libxml/xpath.h>
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#include <libxslt/xsltInternals.h>
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#include <libxslt/variables.h> /* needed for xsltVariablesComp */
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#include <libxml/valid.h> /* needed for xmlSplitQName2 */
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#include "xsldbg.h"
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#include "debugXSL.h"
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#include "search.h"
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int
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xslDbgShellSetVariable(xsltTransformContextPtr styleCtxt, xmlChar * arg)
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{
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int result = 0, showUsage = 0;
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xmlChar *name, *nameURI, *selectExpr, *opts[3];
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if (!styleCtxt) {
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xsldbgGenericErrorFunc(i18n("Error: Stylesheet is not valid.\n"));
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return result;
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}
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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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if (xmlStrLen(arg) > 1) {
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if (splitString(arg, 2, opts) == 2) {
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nameURI = NULL;
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/* ignore any "$" prefix as user probably didn't mean that
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"$" is part of variable name*/
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if (*opts[0] =='$'){
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opts[0] = opts[0] + 1;
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}
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name = xmlSplitQName2(opts[0], &nameURI);
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if (name == NULL)
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name = xmlStrdup(opts[0]);
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selectExpr = xmlStrdup(opts[1]);
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if (name && selectExpr) {
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xsltStackElemPtr def = NULL;
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if (styleCtxt->varsNr && styleCtxt->varsTab) {
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/* try finding varaible in stack */
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for (int i = styleCtxt->varsNr; i > styleCtxt->varsBase; i--) {
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xsltStackElemPtr item = styleCtxt->varsTab[i-1];
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while (item) {
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if ((xmlStrCmp(name, item->name) == 0) &&
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(item->nameURI == NULL
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|| (xmlStrCmp(name, item->nameURI) == 0))) {
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def = item;
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break;
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}
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item = item->next;
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}
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}
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}
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if (def == NULL)
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def = (xsltStackElemPtr)
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xmlHashLookup2(styleCtxt->globalVars,
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name, nameURI);
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if (def != NULL) {
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if (def->select) {
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def->select = xmlDictLookup(styleCtxt->dict, selectExpr, -1);
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def->tree = NULL; /* maybe a memory leak, but play it safe */
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def->computed = 1;
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if (def->comp->comp)
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xmlXPathFreeCompExpr(def->comp->comp);
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def->comp->comp = xmlXPathCompile(def->select);
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if (def->value)
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xmlXPathFreeObject(def->value);
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def->value =
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xmlXPathEval(def->select,
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styleCtxt->xpathCtxt);
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result = 1;
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} else {
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xmlFree(selectExpr);
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xsldbgGenericErrorFunc(i18n("Error: Cannot change a variable that does not use the select attribute.\n"));
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}
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} else
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xsldbgGenericErrorFunc(i18n("Error: Variable %1 was not found.\n").arg(xsldbgText(name)));
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xmlFree(name);
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} else
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xsldbgGenericErrorFunc(i18n("Error: Out of memory.\n"));
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} else {
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showUsage = 1;
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}
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if (showUsage == 1)
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xsldbgGenericErrorFunc(i18n("Error: Invalid arguments to command %1.\n").arg("set"));
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}
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return result;
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}
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