textreader.h

Go to the documentation of this file.

/*
 Copyright (c) 2010, Florian Reuter
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without 
 modification, are permitted provided that the following conditions 
 are met:
 
 * Redistributions of source code must retain the above copyright 
   notice, this list of conditions and the following disclaimer.
 * 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.
 * Neither the name of Florian Reuter 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 THE COPYRIGHT HOLDERS AND 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 THE 
 COPYRIGHT HOLDER OR 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.
 
*/
#ifndef MCE_TEXTREADER_H
#define MCE_TEXTREADER_H

#ifdef __cplusplus
extern "C" {
#endif

    typedef struct MCE_TEXTREADER mceTextReader_t;

#ifdef __cplusplus
} /* extern "C" */
#endif


#include <mce/config.h>
#include <opc/opc.h>
#include <mce/helper.h>
#include <libxml/xmlwriter.h>


#ifdef __cplusplus
extern "C" {
#endif

    struct MCE_TEXTREADER {
        xmlTextReaderPtr reader;
        mceCtx_t mceCtx;
    };

    int mceTextReaderRead(mceTextReader_t *mceTextReader);

    int mceTextReaderNext(mceTextReader_t *mceTextReader);

    int mceTextReaderInit(mceTextReader_t *mceTextReader, xmlTextReaderPtr reader);

    int mceTextReaderCleanup(mceTextReader_t *mceTextReader);

    int mceTextReaderDump(mceTextReader_t *mceTextReader, xmlTextWriter *writer, pbool_t fragment);

    int mceTextReaderUnderstandsNamespace(mceTextReader_t *mceTextReader, const xmlChar *ns);

    pbool_t mceTextReaderDisableMCE(mceTextReader_t *mceTextReader, pbool_t flag);


    void mceRaiseError(xmlTextReader *reader, mceCtx_t *ctx, mceError_t error, const xmlChar *str, ...);

    int mceTextReaderPostprocess(xmlTextReader *reader, mceCtx_t *ctx, int ret);

    mceError_t mceTextReaderGetError(mceTextReader_t *mceTextReader);

#define mce_start_document(_reader_) \
    if (NULL!=(_reader_)) {            \
        mceTextReaderRead(_reader_); \
        if (0)                     

#define mce_end_document(_reader_)   \
    } /* if (NULL!=reader) */        \


#define mce_start_choice(_reader_)  \
    if (0)                          

#define mce_end_choice(_reader_) 


#define mce_skip_attributes(_reader_) \
    mce_start_attributes(_reader_) {  \
    } mce_end_attributes(_reader_);   


#define mce_skip_children(_reader_) \
    mce_start_children(_reader_) {  \
    } mce_end_children(_reader_);   

#define mce_start_children(_reader_)                  \
if (!xmlTextReaderIsEmptyElement((_reader_)->reader)) { \
    mceTextReaderRead(_reader_); do {                 \
        if (0)                                        

#define mce_end_children(_reader_)                                                      \
        else {                                                                          \
            if (XML_READER_TYPE_END_ELEMENT!=xmlTextReaderNodeType((_reader_)->reader)) { \
                mceTextReaderNext(_reader_); /*skip unhandled element */                \
            }                                                                           \
        }                                                                               \
    } while(XML_READER_TYPE_END_ELEMENT!=xmlTextReaderNodeType((_reader_)->reader) &&     \
            XML_READER_TYPE_NONE!=xmlTextReaderNodeType((_reader_)->reader));             \
} /* if (!xmlTextReaderIsEmptyElement(reader->reader)) */                               


#define mce_match_element(_reader_, ns, ln)                                                       \
    } else if (XML_READER_TYPE_ELEMENT==xmlTextReaderNodeType((_reader_)->reader)                 \
            && (NULL==ns || 0==xmlStrcmp(ns, xmlTextReaderConstNamespaceUri((_reader_)->reader))) \
            && (NULL==ln || 0==xmlStrcmp(ln, xmlTextReaderConstLocalName((_reader_)->reader)))) { 


#define mce_start_element(_reader_, ns, ln) \
    mce_match_element(_reader_, ns, ln)     

#define mce_end_element(_reader_) \
    mceTextReaderNext(_reader_)   

#define mce_match_text(_reader_)                                                                   \
    } else if (XML_READER_TYPE_TEXT==xmlTextReaderNodeType((_reader_)->reader)                     \
            || XML_READER_TYPE_SIGNIFICANT_WHITESPACE==xmlTextReaderNodeType((_reader_)->reader)) {


#define mce_start_text(_reader_) \
    mce_match_text(_reader_)      

#define mce_end_text(_reader_) \
    mceTextReaderNext(_reader_)

#define mce_start_attributes(_reader_)                            \
    if (1==xmlTextReaderMoveToFirstAttribute((_reader_)->reader)) { \
        do {                                                      \
            if (0)                                                

#define mce_end_attributes(_reader_)                                    \
            else { /* skipped attribute */ }                            \
        } while(1==xmlTextReaderMoveToNextAttribute((_reader_)->reader)); \
    xmlTextReaderMoveToElement((_reader_)->reader); }                     

#define mce_match_attribute(_reader_, ns, ln)                                                   \
    } else if ((NULL==ns || 0==xmlStrcmp(ns, xmlTextReaderConstNamespaceUri((_reader_)->reader))) \
            && (NULL==ln || 0==xmlStrcmp(ln, xmlTextReaderConstLocalName((_reader_)->reader)))) { 

#define mce_start_attribute(_reader_, ns, ln) \
    mce_match_attribute(_reader_, ns, ln) 

#define mce_end_attribute(_reader_)


#define mce_error_guard_start(_reader_) if (MCE_ERROR_NONE==(_reader_)->mceCtx.error) do {

#define mce_error_guard_end(_reader_)  } while(0)

#define mce_error(_reader_, guard, err, msg) if (guard) { (_reader_)->mceCtx.error=(err); fprintf(stderr, (NULL!=msg?msg:#err));  continue; }

#if defined(__GNUC__)
#define mce_errorf(_reader_, guard, err, msg, ...) if (guard) { mceRaiseError((_reader_)->reader, &(_reader_)->mceCtx, err, _X((NULL!=msg?msg:#err)), ##__VA_ARGS__ );  continue; }
#else
#define mce_errorf(_reader_, guard, err, msg, ...) if (guard) { mceRaiseError((_reader_)->reader, &(_reader_)->mceCtx, err, _X((NULL!=msg?msg:#err)), __VA_ARGS__ );  continue; }
#endif

#define mce_error_strict mce_error

#define mce_error_strictf mce_errorf


#define mce_def

#define mce_ref(r) (r)


#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* MCE_TEXTREADER_H */