relaxng.c.svn-base

这是一个用于解析xml文件的类库。使用这个类库

    if (grammar->next != NULL) {
        xmlRelaxNGFreeGrammar(grammar->next);
    }
    if (grammar->refs != NULL) {
        xmlHashFree(grammar->refs, NULL);
    }
    if (grammar->defs != NULL) {
        xmlHashFree(grammar->defs, NULL);
    }

    xmlFree(grammar);
}

/**
 * xmlRelaxNGNewDefine:
 * @ctxt:  a Relax-NG validation context
 * @node:  the node in the input document.
 *
 * Allocate a new RelaxNG define.
 *
 * Returns the newly allocated structure or NULL in case or error
 */
static xmlRelaxNGDefinePtr
xmlRelaxNGNewDefine(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node)
{
    xmlRelaxNGDefinePtr ret;

    if (ctxt->defMax == 0) {
        ctxt->defMax = 16;
        ctxt->defNr = 0;
        ctxt->defTab = (xmlRelaxNGDefinePtr *)
            xmlMalloc(ctxt->defMax * sizeof(xmlRelaxNGDefinePtr));
        if (ctxt->defTab == NULL) {
            xmlRngPErrMemory(ctxt, "allocating define\n");
            return (NULL);
        }
    } else if (ctxt->defMax <= ctxt->defNr) {
        xmlRelaxNGDefinePtr *tmp;

        ctxt->defMax *= 2;
        tmp = (xmlRelaxNGDefinePtr *) xmlRealloc(ctxt->defTab,
                                                 ctxt->defMax *
                                                 sizeof
                                                 (xmlRelaxNGDefinePtr));
        if (tmp == NULL) {
            xmlRngPErrMemory(ctxt, "allocating define\n");
            return (NULL);
        }
        ctxt->defTab = tmp;
    }
    ret = (xmlRelaxNGDefinePtr) xmlMalloc(sizeof(xmlRelaxNGDefine));
    if (ret == NULL) {
        xmlRngPErrMemory(ctxt, "allocating define\n");
        return (NULL);
    }
    memset(ret, 0, sizeof(xmlRelaxNGDefine));
    ctxt->defTab[ctxt->defNr++] = ret;
    ret->node = node;
    ret->depth = -1;
    return (ret);
}

/**
 * xmlRelaxNGFreePartition:
 * @partitions:  a partition set structure
 *
 * Deallocate RelaxNG partition set structures.
 */
static void
xmlRelaxNGFreePartition(xmlRelaxNGPartitionPtr partitions)
{
    xmlRelaxNGInterleaveGroupPtr group;
    int j;

    if (partitions != NULL) {
        if (partitions->groups != NULL) {
            for (j = 0; j < partitions->nbgroups; j++) {
                group = partitions->groups[j];
                if (group != NULL) {
                    if (group->defs != NULL)
                        xmlFree(group->defs);
                    if (group->attrs != NULL)
                        xmlFree(group->attrs);
                    xmlFree(group);
                }
            }
            xmlFree(partitions->groups);
        }
        if (partitions->triage != NULL) {
            xmlHashFree(partitions->triage, NULL);
        }
        xmlFree(partitions);
    }
}

/**
 * xmlRelaxNGFreeDefine:
 * @define:  a define structure
 *
 * Deallocate a RelaxNG define structure.
 */
static void
xmlRelaxNGFreeDefine(xmlRelaxNGDefinePtr define)
{
    if (define == NULL)
        return;

    if ((define->type == XML_RELAXNG_VALUE) && (define->attrs != NULL)) {
        xmlRelaxNGTypeLibraryPtr lib;

        lib = (xmlRelaxNGTypeLibraryPtr) define->data;
        if ((lib != NULL) && (lib->freef != NULL))
            lib->freef(lib->data, (void *) define->attrs);
    }
    if ((define->data != NULL) && (define->type == XML_RELAXNG_INTERLEAVE))
        xmlRelaxNGFreePartition((xmlRelaxNGPartitionPtr) define->data);
    if ((define->data != NULL) && (define->type == XML_RELAXNG_CHOICE))
        xmlHashFree((xmlHashTablePtr) define->data, NULL);
    if (define->name != NULL)
        xmlFree(define->name);
    if (define->ns != NULL)
        xmlFree(define->ns);
    if (define->value != NULL)
        xmlFree(define->value);
    if (define->contModel != NULL)
        xmlRegFreeRegexp(define->contModel);
    xmlFree(define);
}

/**
 * xmlRelaxNGNewStates:
 * @ctxt:  a Relax-NG validation context
 * @size:  the default size for the container
 *
 * Allocate a new RelaxNG validation state container
 *
 * Returns the newly allocated structure or NULL in case or error
 */
static xmlRelaxNGStatesPtr
xmlRelaxNGNewStates(xmlRelaxNGValidCtxtPtr ctxt, int size)
{
    xmlRelaxNGStatesPtr ret;

    if ((ctxt != NULL) &&
        (ctxt->freeState != NULL) && (ctxt->freeStatesNr > 0)) {
        ctxt->freeStatesNr--;
        ret = ctxt->freeStates[ctxt->freeStatesNr];
        ret->nbState = 0;
        return (ret);
    }
    if (size < 16)
        size = 16;

    ret = (xmlRelaxNGStatesPtr) xmlMalloc(sizeof(xmlRelaxNGStates) +
                                          (size -
                                           1) *
                                          sizeof(xmlRelaxNGValidStatePtr));
    if (ret == NULL) {
        xmlRngVErrMemory(ctxt, "allocating states\n");
        return (NULL);
    }
    ret->nbState = 0;
    ret->maxState = size;
    ret->tabState = (xmlRelaxNGValidStatePtr *) xmlMalloc((size) *
                                                          sizeof
                                                          (xmlRelaxNGValidStatePtr));
    if (ret->tabState == NULL) {
        xmlRngVErrMemory(ctxt, "allocating states\n");
        xmlFree(ret);
        return (NULL);
    }
    return (ret);
}

/**
 * xmlRelaxNGAddStateUniq:
 * @ctxt:  a Relax-NG validation context
 * @states:  the states container
 * @state:  the validation state
 *
 * Add a RelaxNG validation state to the container without checking
 * for unicity.
 *
 * Return 1 in case of success and 0 if this is a duplicate and -1 on error
 */
static int
xmlRelaxNGAddStatesUniq(xmlRelaxNGValidCtxtPtr ctxt,
                        xmlRelaxNGStatesPtr states,
                        xmlRelaxNGValidStatePtr state)
{
    if (state == NULL) {
        return (-1);
    }
    if (states->nbState >= states->maxState) {
        xmlRelaxNGValidStatePtr *tmp;
        int size;

        size = states->maxState * 2;
        tmp = (xmlRelaxNGValidStatePtr *) xmlRealloc(states->tabState,
                                                     (size) *
                                                     sizeof
                                                     (xmlRelaxNGValidStatePtr));
        if (tmp == NULL) {
            xmlRngVErrMemory(ctxt, "adding states\n");
            return (-1);
        }
        states->tabState = tmp;
        states->maxState = size;
    }
    states->tabState[states->nbState++] = state;
    return (1);
}

/**
 * xmlRelaxNGAddState:
 * @ctxt:  a Relax-NG validation context
 * @states:  the states container
 * @state:  the validation state
 *
 * Add a RelaxNG validation state to the container
 *
 * Return 1 in case of success and 0 if this is a duplicate and -1 on error
 */
static int
xmlRelaxNGAddStates(xmlRelaxNGValidCtxtPtr ctxt,
                    xmlRelaxNGStatesPtr states,
                    xmlRelaxNGValidStatePtr state)
{
    int i;

    if (state == NULL) {
        return (-1);
    }
    if (states->nbState >= states->maxState) {
        xmlRelaxNGValidStatePtr *tmp;
        int size;

        size = states->maxState * 2;
        tmp = (xmlRelaxNGValidStatePtr *) xmlRealloc(states->tabState,
                                                     (size) *
                                                     sizeof
                                                     (xmlRelaxNGValidStatePtr));
        if (tmp == NULL) {
            xmlRngVErrMemory(ctxt, "adding states\n");
            return (-1);
        }
        states->tabState = tmp;
        states->maxState = size;
    }
    for (i = 0; i < states->nbState; i++) {
        if (xmlRelaxNGEqualValidState(ctxt, state, states->tabState[i])) {
            xmlRelaxNGFreeValidState(ctxt, state);
            return (0);
        }
    }
    states->tabState[states->nbState++] = state;
    return (1);
}

/**
 * xmlRelaxNGFreeStates:
 * @ctxt:  a Relax-NG validation context
 * @states:  teh container
 *
 * Free a RelaxNG validation state container
 */
static void
xmlRelaxNGFreeStates(xmlRelaxNGValidCtxtPtr ctxt,
                     xmlRelaxNGStatesPtr states)
{
    if (states == NULL)
        return;
    if ((ctxt != NULL) && (ctxt->freeStates == NULL)) {
        ctxt->freeStatesMax = 40;
        ctxt->freeStatesNr = 0;
        ctxt->freeStates = (xmlRelaxNGStatesPtr *)
            xmlMalloc(ctxt->freeStatesMax * sizeof(xmlRelaxNGStatesPtr));
        if (ctxt->freeStates == NULL) {
            xmlRngVErrMemory(ctxt, "storing states\n");
        }
    } else if ((ctxt != NULL)
               && (ctxt->freeStatesNr >= ctxt->freeStatesMax)) {
        xmlRelaxNGStatesPtr *tmp;

        tmp = (xmlRelaxNGStatesPtr *) xmlRealloc(ctxt->freeStates,
                                                 2 * ctxt->freeStatesMax *
                                                 sizeof
                                                 (xmlRelaxNGStatesPtr));
        if (tmp == NULL) {
            xmlRngVErrMemory(ctxt, "storing states\n");
            xmlFree(states->tabState);
            xmlFree(states);
            return;
        }
        ctxt->freeStates = tmp;
        ctxt->freeStatesMax *= 2;
    }
    if ((ctxt == NULL) || (ctxt->freeState == NULL)) {
        xmlFree(states->tabState);
        xmlFree(states);
    } else {
        ctxt->freeStates[ctxt->freeStatesNr++] = states;
    }
}

/**
 * xmlRelaxNGNewValidState:
 * @ctxt:  a Relax-NG validation context
 * @node:  the current node or NULL for the document
 *
 * Allocate a new RelaxNG validation state
 *
 * Returns the newly allocated structure or NULL in case or error
 */
static xmlRelaxNGValidStatePtr
xmlRelaxNGNewValidState(xmlRelaxNGValidCtxtPtr ctxt, xmlNodePtr node)
{
    xmlRelaxNGValidStatePtr ret;
    xmlAttrPtr attr;
    xmlAttrPtr attrs[MAX_ATTR];
    int nbAttrs = 0;
    xmlNodePtr root = NULL;

    if (node == NULL) {
        root = xmlDocGetRootElement(ctxt->doc);
        if (root == NULL)
            return (NULL);
    } else {
        attr = node->properties;
        while (attr != NULL) {
            if (nbAttrs < MAX_ATTR)
                attrs[nbAttrs++] = attr;
            else
                nbAttrs++;
            attr = attr->next;
        }
    }
    if ((ctxt->freeState != NULL) && (ctxt->freeState->nbState > 0)) {
        ctxt->freeState->nbState--;
        ret = ctxt->freeState->tabState[ctxt->freeState->nbState];
    } else {
        ret =
            (xmlRelaxNGValidStatePtr)
            xmlMalloc(sizeof(xmlRelaxNGValidState));
        if (ret == NULL) {
            xmlRngVErrMemory(ctxt, "allocating states\n");
            return (NULL);
        }
        memset(ret, 0, sizeof(xmlRelaxNGValidState));
    }
    ret->value = NULL;
    ret->endvalue = NULL;
    if (node == NULL) {
        ret->node = (xmlNodePtr) ctxt->doc;
        ret->seq = root;
    } else {
        ret->node = node;
        ret->seq = node->children;
    }
    ret->nbAttrs = 0;
    if (nbAttrs > 0) {
        if (ret->attrs == NULL) {
            if (nbAttrs < 4)
                ret->maxAttrs = 4;
            else
                ret->maxAttrs = nbAttrs;
            ret->attrs = (xmlAttrPtr *) xmlMalloc(ret->maxAttrs *
                                                  sizeof(xmlAttrPtr));
            if (ret->attrs == NULL) {
                xmlRngVErrMemory(ctxt, "allocating states\n");
                return (ret);
            }
        } else if (ret->maxAttrs < nbAttrs) {
            xmlAttrPtr *tmp;

            tmp = (xmlAttrPtr *) xmlRealloc(ret->attrs, nbAttrs *
                                            sizeof(xmlAttrPtr));
            if (tmp == NULL) {
                xmlRngVErrMemory(ctxt, "allocating states\n");
                return (ret);
            }
            ret->attrs = tmp;
            ret->maxAttrs = nbAttrs;
        }
        ret->nbAttrs = nbAttrs;
        if (nbAttrs < MAX_ATTR) {
            memcpy(ret->attrs, attrs, sizeof(xmlAttrPtr) * nbAttrs);
        } else {
            attr = node->properties;
            nbAttrs = 0;
            while (attr != NULL) {
                ret->attrs[nbAttrs++] = attr;
                attr = attr->next;
            }
        }
    }
    ret->nbAttrLeft = ret->nbAttrs;
    return (ret);
}

/**
 * xmlRelaxNGCopyValidState:
 * @ctxt:  a Relax-NG validation context
 * @state:  a validation state
 *
 * Copy the validation state
 *
 * Returns the newly allocated structure or NULL in case or error
 */
static xmlRelaxNGValidStatePtr
xmlRelaxNGCopyValidState(xmlRelaxNGValidCtxtPtr ctxt,
                         xmlRelaxNGValidStatePtr state)
{
    xmlRelaxNGValidStatePtr ret;
    unsigned int maxAttrs;
    xmlAttrPtr *attrs;

    if (state == NULL)
        return (NULL);
    if ((ctxt->freeState != NULL) && (ctxt->freeState->nbState > 0)) {
        ctxt->freeState->nbState--;
        ret = ctxt->freeState->tabState[ctxt->freeState->nbState];
    } else {
        ret =
            (xmlRelaxNGValidStatePtr)
            xmlMalloc(sizeof(xmlRelaxNGValidState));