115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*
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* Copyright 2004-2005 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include "jni.h"
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#include "manifest_info.h"
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#include "JarFacade.h"
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typedef struct {
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jarAttribute* head;
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jarAttribute* tail;
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} iterationContext;
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static void
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doAttribute(const char* name, const char* value, void* user_data) {
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iterationContext* context = (iterationContext*) user_data;
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jarAttribute* attribute = (jarAttribute*)malloc(sizeof(jarAttribute));
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if (attribute != NULL) {
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attribute->name = strdup(name);
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if (attribute->name == NULL) {
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free(attribute);
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} else {
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attribute->value = strdup(value);
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if (attribute->value == NULL) {
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free(attribute->name);
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free(attribute);
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} else {
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attribute->next = NULL;
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if (context->head == NULL) {
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context->head = attribute;
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} else {
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context->tail->next = attribute;
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}
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context->tail = attribute;
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}
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}
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}
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}
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/*
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* Return a list of attributes from the main section of the given JAR
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* file. Returns NULL if there is an error or there aren't any attributes.
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*/
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jarAttribute*
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readAttributes(const char* jarfile)
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{
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int rc;
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iterationContext context = { NULL, NULL };
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rc = JLI_ManifestIterate(jarfile, doAttribute, (void*)&context);
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if (rc == 0) {
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return context.head;
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} else {
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freeAttributes(context.head);
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return NULL;
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}
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}
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/*
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* Free a list of attributes
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*/
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void
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freeAttributes(jarAttribute* head) {
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while (head != NULL) {
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jarAttribute* next = (jarAttribute*)head->next;
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free(head->name);
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free(head->value);
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free(head);
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head = next;
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}
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}
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/*
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* Get the value of an attribute in an attribute list. Returns NULL
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* if attribute not found.
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*/
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char*
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getAttribute(const jarAttribute* attributes, const char* name) {
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while (attributes != NULL) {
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if (strcasecmp(attributes->name, name) == 0) {
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return attributes->value;
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}
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attributes = (jarAttribute*)attributes->next;
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}
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return NULL;
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}
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