xmllint.c

libxml,在UNIX/LINUX下非常重要的一个库,为XML相关应用提供方便.目前上载的是最新版本,若要取得最新版本,请参考里面的readme.

    /* We don't have gettimeofday, time or stdarg.h, what crazy world is
     * this ?!
     */
#endif
}
#endif
/************************************************************************
 * 									*
 * 			HTML ouput					*
 * 									*
 ************************************************************************/
char buffer[50000];

static void
xmlHTMLEncodeSend(void) {
    char *result;

    result = (char *) xmlEncodeEntitiesReentrant(NULL, BAD_CAST buffer);
    if (result) {
	xmlGenericError(xmlGenericErrorContext, "%s", result);
	xmlFree(result);
    }
    buffer[0] = 0;
}

/**
 * xmlHTMLPrintFileInfo:
 * @input:  an xmlParserInputPtr input
 * 
 * Displays the associated file and line informations for the current input
 */

static void
xmlHTMLPrintFileInfo(xmlParserInputPtr input) {
    int len;
    xmlGenericError(xmlGenericErrorContext, "<p>");

    len = strlen(buffer);
    if (input != NULL) {
	if (input->filename) {
	    snprintf(&buffer[len], sizeof(buffer) - len, "%s:%d: ", input->filename,
		    input->line);
	} else {
	    snprintf(&buffer[len], sizeof(buffer) - len, "Entity: line %d: ", input->line);
	}
    }
    xmlHTMLEncodeSend();
}

/**
 * xmlHTMLPrintFileContext:
 * @input:  an xmlParserInputPtr input
 * 
 * Displays current context within the input content for error tracking
 */

static void
xmlHTMLPrintFileContext(xmlParserInputPtr input) {
    const xmlChar *cur, *base;
    int len;
    int n;

    if (input == NULL) return;
    xmlGenericError(xmlGenericErrorContext, "<pre>\n");
    cur = input->cur;
    base = input->base;
    while ((cur > base) && ((*cur == '\n') || (*cur == '\r'))) {
	cur--;
    }
    n = 0;
    while ((n++ < 80) && (cur > base) && (*cur != '\n') && (*cur != '\r'))
        cur--;
    if ((*cur == '\n') || (*cur == '\r')) cur++;
    base = cur;
    n = 0;
    while ((*cur != 0) && (*cur != '\n') && (*cur != '\r') && (n < 79)) {
	len = strlen(buffer);
        snprintf(&buffer[len], sizeof(buffer) - len, "%c", 
		    (unsigned char) *cur++);
	n++;
    }
    len = strlen(buffer);
    snprintf(&buffer[len], sizeof(buffer) - len, "\n");
    cur = input->cur;
    while ((*cur == '\n') || (*cur == '\r'))
	cur--;
    n = 0;
    while ((cur != base) && (n++ < 80)) {
	len = strlen(buffer);
        snprintf(&buffer[len], sizeof(buffer) - len, " ");
        base++;
    }
    len = strlen(buffer);
    snprintf(&buffer[len], sizeof(buffer) - len, "^\n");
    xmlHTMLEncodeSend();
    xmlGenericError(xmlGenericErrorContext, "</pre>");
}

/**
 * xmlHTMLError:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format an error messages, gives file, line, position and
 * extra parameters.
 */
static void
xmlHTMLError(void *ctx, const char *msg, ...)
{
    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
    xmlParserInputPtr input;
    va_list args;
    int len;

    buffer[0] = 0;
    input = ctxt->input;
    if ((input != NULL) && (input->filename == NULL) && (ctxt->inputNr > 1)) {
        input = ctxt->inputTab[ctxt->inputNr - 2];
    }
        
    xmlHTMLPrintFileInfo(input);

    xmlGenericError(xmlGenericErrorContext, "<b>error</b>: ");
    va_start(args, msg);
    len = strlen(buffer);
    vsnprintf(&buffer[len],  sizeof(buffer) - len, msg, args);
    va_end(args);
    xmlHTMLEncodeSend();
    xmlGenericError(xmlGenericErrorContext, "</p>\n");

    xmlHTMLPrintFileContext(input);
    xmlHTMLEncodeSend();
}

/**
 * xmlHTMLWarning:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format a warning messages, gives file, line, position and
 * extra parameters.
 */
static void
xmlHTMLWarning(void *ctx, const char *msg, ...)
{
    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
    xmlParserInputPtr input;
    va_list args;
    int len;

    buffer[0] = 0;
    input = ctxt->input;
    if ((input != NULL) && (input->filename == NULL) && (ctxt->inputNr > 1)) {
        input = ctxt->inputTab[ctxt->inputNr - 2];
    }
        

    xmlHTMLPrintFileInfo(input);
        
    xmlGenericError(xmlGenericErrorContext, "<b>warning</b>: ");
    va_start(args, msg);
    len = strlen(buffer);    
    vsnprintf(&buffer[len],  sizeof(buffer) - len, msg, args);
    va_end(args);
    xmlHTMLEncodeSend();
    xmlGenericError(xmlGenericErrorContext, "</p>\n");

    xmlHTMLPrintFileContext(input);
    xmlHTMLEncodeSend();
}

/**
 * xmlHTMLValidityError:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format an validity error messages, gives file,
 * line, position and extra parameters.
 */
static void
xmlHTMLValidityError(void *ctx, const char *msg, ...)
{
    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
    xmlParserInputPtr input;
    va_list args;
    int len;

    buffer[0] = 0;
    input = ctxt->input;
    if ((input->filename == NULL) && (ctxt->inputNr > 1))
        input = ctxt->inputTab[ctxt->inputNr - 2];
        
    xmlHTMLPrintFileInfo(input);

    xmlGenericError(xmlGenericErrorContext, "<b>validity error</b>: ");
    len = strlen(buffer);
    va_start(args, msg);
    vsnprintf(&buffer[len],  sizeof(buffer) - len, msg, args);
    va_end(args);
    xmlHTMLEncodeSend();
    xmlGenericError(xmlGenericErrorContext, "</p>\n");

    xmlHTMLPrintFileContext(input);
    xmlHTMLEncodeSend();
    progresult = XMLLINT_ERR_VALID;
}

/**
 * xmlHTMLValidityWarning:
 * @ctx:  an XML parser context
 * @msg:  the message to display/transmit
 * @...:  extra parameters for the message display
 * 
 * Display and format a validity warning messages, gives file, line,
 * position and extra parameters.
 */
static void
xmlHTMLValidityWarning(void *ctx, const char *msg, ...)
{
    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
    xmlParserInputPtr input;
    va_list args;
    int len;

    buffer[0] = 0;
    input = ctxt->input;
    if ((input->filename == NULL) && (ctxt->inputNr > 1))
        input = ctxt->inputTab[ctxt->inputNr - 2];

    xmlHTMLPrintFileInfo(input);
        
    xmlGenericError(xmlGenericErrorContext, "<b>validity warning</b>: ");
    va_start(args, msg);
    len = strlen(buffer); 
    vsnprintf(&buffer[len],  sizeof(buffer) - len, msg, args);
    va_end(args);
    xmlHTMLEncodeSend();
    xmlGenericError(xmlGenericErrorContext, "</p>\n");

    xmlHTMLPrintFileContext(input);
    xmlHTMLEncodeSend();
}

/************************************************************************
 * 									*
 * 			Shell Interface					*
 * 									*
 ************************************************************************/
#ifdef LIBXML_DEBUG_ENABLED
#ifdef LIBXML_XPATH_ENABLED
/**
 * xmlShellReadline:
 * @prompt:  the prompt value
 *
 * Read a string
 * 
 * Returns a pointer to it or NULL on EOF the caller is expected to
 *     free the returned string.
 */
static char *
xmlShellReadline(char *prompt) {
#ifdef HAVE_LIBREADLINE
    char *line_read;

    /* Get a line from the user. */
    line_read = readline (prompt);

    /* If the line has any text in it, save it on the history. */
    if (line_read && *line_read)
	add_history (line_read);

    return (line_read);
#else
    char line_read[501];
    char *ret;
    int len;

    if (prompt != NULL)
	fprintf(stdout, "%s", prompt);
    if (!fgets(line_read, 500, stdin))
        return(NULL);
    line_read[500] = 0;
    len = strlen(line_read);
    ret = (char *) malloc(len + 1);
    if (ret != NULL) {
	memcpy (ret, line_read, len + 1);
    }
    return(ret);
#endif
}
#endif /* LIBXML_XPATH_ENABLED */
#endif /* LIBXML_DEBUG_ENABLED */

/************************************************************************
 * 									*
 * 			I/O Interfaces					*
 * 									*
 ************************************************************************/

static int myRead(FILE *f, char * buf, int len) {
    return(fread(buf, 1, len, f));
}
static void myClose(FILE *f) {
  if (f != stdin) {
    fclose(f);
  }
}

#ifdef LIBXML_READER_ENABLED
/************************************************************************
 * 									*
 * 			Stream Test processing				*
 * 									*
 ************************************************************************/
static void processNode(xmlTextReaderPtr reader) {
    const xmlChar *name, *value;
    int type, empty;

    type = xmlTextReaderNodeType(reader);
    empty = xmlTextReaderIsEmptyElement(reader);

    if (debug) {
	name = xmlTextReaderConstName(reader);
	if (name == NULL)
	    name = BAD_CAST "--";

	value = xmlTextReaderConstValue(reader);

	
	printf("%d %d %s %d %d", 
		xmlTextReaderDepth(reader),
		type,
		name,
		empty,
		xmlTextReaderHasValue(reader));
	if (value == NULL)
	    printf("\n");
	else {
	    printf(" %s\n", value);
	}
    }
#ifdef LIBXML_PATTERN_ENABLED
    if (patternc) {
        xmlChar *path = NULL;
        int match = -1;
	
	if (type == XML_READER_TYPE_ELEMENT) {
	    /* do the check only on element start */
	    match = xmlPatternMatch(patternc, xmlTextReaderCurrentNode(reader));

	    if (match) {
		path = xmlGetNodePath(xmlTextReaderCurrentNode(reader));
		printf("Node %s matches pattern %s\n", path, pattern);
	    }
	}
	if (patstream != NULL) {
	    int ret;

	    if (type == XML_READER_TYPE_ELEMENT) {
		ret = xmlStreamPush(patstream,
		                    xmlTextReaderConstLocalName(reader),
				    xmlTextReaderConstNamespaceUri(reader));
		if (ret < 0) {
		    fprintf(stderr, "xmlStreamPush() failure\n");
                    xmlFreeStreamCtxt(patstream);
		    patstream = NULL;
		} else if (ret != match) {
		    if (path == NULL) {
		        path = xmlGetNodePath(
		                       xmlTextReaderCurrentNode(reader));
		    }
		    fprintf(stderr,
		            "xmlPatternMatch and xmlStreamPush disagree\n");
		    fprintf(stderr,
		            "  pattern %s node %s\n",
			    pattern, path);
		}
		

	    } 
	    if ((type == XML_READER_TYPE_END_ELEMENT) ||
	        ((type == XML_READER_TYPE_ELEMENT) && (empty))) {
	        ret = xmlStreamPop(patstream);
		if (ret < 0) {
		    fprintf(stderr, "xmlStreamPop() failure\n");
                    xmlFreeStreamCtxt(patstream);
		    patstream = NULL;
		}
	    }
	}
	if (path != NULL)
	    xmlFree(path);
    }
#endif
}

static void streamFile(char *filename) {
    xmlTextReaderPtr reader;
    int ret;
#ifdef HAVE_SYS_MMAN_H
    int fd = -1;
    struct stat info;
    const char *base = NULL;
    xmlParserInputBufferPtr input = NULL;

    if (memory) {
	if (stat(filename, &info) < 0) 
	    return;
	if ((fd = open(filename, O_RDONLY)) < 0)
	    return;
	base = mmap(NULL, info.st_size, PROT_READ, MAP_SHARED, fd, 0) ;
	if (base == (void *) MAP_FAILED)
	    return;

	reader = xmlReaderForMemory(base, info.st_size, filename,
	                            NULL, options);
    } else
#endif
	reader = xmlReaderForFile(filename, NULL, options);
#ifdef LIBXML_PATTERN_ENABLED
    if (pattern != NULL) {
        patternc = xmlPatterncompile((const xmlChar *) pattern, NULL, 0, NULL);
	if (patternc == NULL) {
	    xmlGenericError(xmlGenericErrorContext,
		    "Pattern %s failed to compile\n", pattern);
            progresult = XMLLINT_ERR_SCHEMAPAT;
	    pattern = NULL;
	}
    }
    if (patternc != NULL) {
        patstream = xmlPatternGetStreamCtxt(patternc);
	if (patstream != NULL) {
	    ret = xmlStreamPush(patstream, NULL, NULL);
	    if (ret < 0) {
		fprintf(stderr, "xmlStreamPush() failure\n");
		xmlFreeStreamCtxt(patstream);
		patstream = NULL;
            }
	}
    }
#endif


    if (reader != NULL) {
#ifdef LIBXML_VALID_ENABLED
	if (valid)
	    xmlTextReaderSetParserProp(reader, XML_PARSER_VALIDATE, 1);
	else
#endif /* LIBXML_VALID_ENABLED */
	    xmlTextReaderSetParserProp(reader, XML_PARSER_LOADDTD, 1);
#ifdef LIBXML_SCHEMAS_ENABLED
	if (relaxng != NULL) {
	    if ((timing) && (!repeat)) {
		startTimer();
	    }
	    ret = xmlTextReaderRelaxNGValidate(reader, relaxng);
	    if (ret < 0) {
		xmlGenericError(xmlGenericErrorContext,
			"Relax-NG schema %s failed to compile\n", relaxng);
		progresult = XMLLINT_ERR_SCHEMACOMP;
		relaxng = NULL;
	    }
	    if ((timing) && (!repeat)) {
		endTimer("Compiling the schemas");
	    }
	}
#endif

	/*
	 * Process all nodes in sequence
	 */
	if ((timing) && (!repeat)) {
	    startTimer();
	}
	ret = xmlTextReaderRead(reader);
	while (ret == 1) {
	    if ((debug)
#ifdef LIBXML_PATTERN_ENABLED
	        || (patternc)
#endif
	       )
		processNode(reader);
	    ret = xmlTextReaderRead(reader);
	}
	if ((timing) && (!repeat)) {
#ifdef LIBXML_SCHEMAS_ENABLED
	    if (relaxng != NULL)