/src/libxml2/xmllint.c

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/*
 * xmllint.c : a small tester program for XML input.
 *
 * See Copyright for the status of this software.
 *
 * Author: Daniel Veillard
 */

#include "libxml.h"

#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#include <fcntl.h>

#ifdef _WIN32
  #include <io.h>
  #include <sys/timeb.h>
#else
  #include <sys/time.h>
  #include <unistd.h>
#endif

#if HAVE_DECL_MMAP
  #include <sys/mman.h>
  #include <sys/stat.h>
  /* seems needed for Solaris */
  #ifndef MAP_FAILED
    #define MAP_FAILED ((void *) -1)
  #endif
#endif

#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/HTMLparser.h>
#include <libxml/HTMLtree.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include <libxml/debugXML.h>
#include <libxml/xmlerror.h>
#ifdef LIBXML_XINCLUDE_ENABLED
#include <libxml/xinclude.h>
#endif
#ifdef LIBXML_CATALOG_ENABLED
#include <libxml/catalog.h>
#endif
#include <libxml/xmlreader.h>
#ifdef LIBXML_SCHEMATRON_ENABLED
#include <libxml/schematron.h>
#endif
#ifdef LIBXML_RELAXNG_ENABLED
#include <libxml/relaxng.h>
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
#include <libxml/xmlschemas.h>
#endif
#ifdef LIBXML_PATTERN_ENABLED
#include <libxml/pattern.h>
#endif
#ifdef LIBXML_C14N_ENABLED
#include <libxml/c14n.h>
#endif
#ifdef LIBXML_OUTPUT_ENABLED
#include <libxml/xmlsave.h>
#endif

#include "private/lint.h"

#ifndef STDIN_FILENO
  #define STDIN_FILENO 0
#endif
#ifndef STDOUT_FILENO
  #define STDOUT_FILENO 1
#endif

#define MAX_PATHS 64

#ifdef _WIN32
  #define PATH_SEPARATOR ';'
#else
  #define PATH_SEPARATOR ':'
#endif

typedef enum {
    XMLLINT_RETURN_OK = 0,      /* No error */
    XMLLINT_ERR_UNCLASS = 1,      /* Unclassified */
    XMLLINT_ERR_DTD = 2,      /* Error in DTD */
    XMLLINT_ERR_VALID = 3,      /* Validation error */
    XMLLINT_ERR_RDFILE = 4,     /* Wellformedness or IO error */
    XMLLINT_ERR_SCHEMACOMP = 5,     /* Schema compilation */
    XMLLINT_ERR_OUT = 6,      /* Error writing output */
    XMLLINT_ERR_SCHEMAPAT = 7,      /* Error in schema pattern */
    /*XMLLINT_ERR_RDREGIS = 8,*/
    XMLLINT_ERR_MEM = 9,      /* Out of memory error */
    XMLLINT_ERR_XPATH = 10,     /* XPath evaluation error */
    XMLLINT_ERR_XPATH_EMPTY = 11    /* XPath result is empty */
} xmllintReturnCode;

#ifdef _WIN32
typedef __time64_t xmlSeconds;
#else
typedef time_t xmlSeconds;
#endif

typedef struct {
   xmlSeconds sec;
   int usec;
} xmlTime;

/* Boolean xmllint application options */
typedef enum {
    /** Do not build a tree but work just at the SAX level */
    XML_LINT_SAX_ENABLED = (1 << 0),
    /** run a navigating shell */
    XML_LINT_NAVIGATING_SHELL = (1 << 1),
    /** Show additional debug information */
    XML_LINT_DEBUG_ENABLED = (1 << 2),
    /** Test the internal copy implementation */
    XML_LINT_COPY_ENABLED = (1 << 3),
    /** Turn on gzip compression of output */
    XML_LINT_ZLIB_COMPRESSION = (1 << 4),
    /** Save in W3C canonical format v1.0 (with comments) */
    XML_LINT_CANONICAL_V1_0 = (1 << 5),
    /** Save in W3C canonical format v1.1 (with comments) */
    XML_LINT_CANONICAL_V1_1 = (1 << 6),
    /** Save exclusive canonical format (with comments) */
    XML_LINT_CANONICAL_EXE = (1 << 7),
    /** Do a posteriori validation, i.e after parsing */
    XML_LINT_POST_VALIDATION = (1 << 8),
    /** Ad-hoc test for valid insertions */
    XML_LINT_VALID_INSERTIONS = (1 << 9),
    /** Use the HTML parser */
    XML_LINT_HTML_ENABLED = (1 << 10),
    /** Force to use the XML serializer when using XML_LINT_HTML_ENABLED */
    XML_LINT_XML_OUT = (1 << 11),
    /** Use the push mode of the parser */
    XML_LINT_PUSH_ENABLED = (1 << 12),
    /** Parse from memory */
    XML_LINT_MEMORY = (1 << 13),
    /** Do XInclude processing */
    XML_LINT_XINCLUDE = (1 << 14),
    /** Be quiet when succeeded */
    XML_LINT_QUIET = (1 << 15),
    /** Print some timings */
    XML_LINT_TIMINGS = (1 << 16),
    /** Generate a small doc on the fly */
    XML_LINT_GENERATE = (1 << 17),
    /** Remove the DOCTYPE of the input docs */
    XML_LINT_DROP_DTD = (1 << 18),
    /** Use the streaming interface to process very large files */
    XML_LINT_USE_STREAMING = (1 << 19),
    /** Create a reader and walk though the resulting doc */
    XML_LINT_USE_WALKER = (1 << 20),
    /** use SGML catalogs from $SGML_CATALOG_FILES */
    XML_LINT_USE_CATALOGS = (1 << 21),
    /** Deactivate all catalogs */
    XML_LINT_USE_NO_CATALOGS = (1 << 22),
    /** Print trace of all external entities loaded */
    XML_LINT_USE_LOAD_TRACE = (1 << 23),
    /** Return application failure if document has any namespace errors */
    XML_LINT_STRICT_NAMESPACE = (1 << 24)


} xmllintAppOptions;

typedef struct {
    FILE *errStream;
    xmlParserCtxtPtr ctxt;
    xmlResourceLoader defaultResourceLoader;

    int version;
    int maxmem;
    int callbacks;
    int noout;
#ifdef LIBXML_OUTPUT_ENABLED
    const char *output;
    const char *encoding;
    const char *indentString;
    int format;
#endif /* LIBXML_OUTPUT_ENABLED */
#ifdef LIBXML_VALID_ENABLED
    const char *dtdvalid;
    const char *dtdvalidfpi;
#endif
#ifdef LIBXML_RELAXNG_ENABLED
    const char *relaxng;
    xmlRelaxNGPtr relaxngschemas;
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
    const char *schema;
    xmlSchemaPtr wxschemas;
#endif
#ifdef LIBXML_SCHEMATRON_ENABLED
    const char *schematron;
    xmlSchematronPtr wxschematron;
#endif
    int repeat;
#ifdef LIBXML_HTML_ENABLED
    int htmlOptions;
#endif
#if HAVE_DECL_MMAP
    char *memoryData;
    size_t memorySize;
#endif
    xmllintReturnCode progresult;
#ifdef LIBXML_READER_ENABLED
#ifdef LIBXML_PATTERN_ENABLED
    const char *pattern;
    xmlPatternPtr patternc;
    xmlStreamCtxtPtr patstream;
#endif
#endif /* LIBXML_READER_ENABLED */
#ifdef LIBXML_XPATH_ENABLED
    const char *xpathquery;
#endif
    int parseOptions;
    unsigned appOptions;
    unsigned maxAmpl;

    xmlChar *paths[MAX_PATHS + 1];
    int nbpaths;

    xmlTime begin;
    xmlTime end;
} xmllintState;

static int xmllintMaxmem;
static int xmllintMaxmemReached;
static int xmllintOom;

/************************************************************************
 *                  *
 *     Entity loading control and customization.    *
 *                  *
 ************************************************************************/

static void
parsePath(xmllintState *lint, const xmlChar *path) {
    const xmlChar *cur;

    if (path == NULL)
  return;
    while (*path != 0) {
  if (lint->nbpaths >= MAX_PATHS) {
      fprintf(lint->errStream, "MAX_PATHS reached: too many paths\n");
            lint->progresult = XMLLINT_ERR_UNCLASS;
      return;
  }
  cur = path;
  while ((*cur == ' ') || (*cur == PATH_SEPARATOR))
      cur++;
  path = cur;
  while ((*cur != 0) && (*cur != ' ') && (*cur != PATH_SEPARATOR))
      cur++;
  if (cur != path) {
      lint->paths[lint->nbpaths] = xmlStrndup(path, cur - path);
      if (lint->paths[lint->nbpaths] != NULL)
    lint->nbpaths++;
      path = cur;
  }
    }
}

static xmlParserErrors
xmllintResourceLoader(void *ctxt, const char *URL,
                      const char *ID, xmlResourceType type,
                      xmlParserInputFlags flags, xmlParserInputPtr *out) {
    xmllintState *lint = ctxt;
    xmlParserErrors code;
    int i;
    const char *lastsegment = URL;
    const char *iter = URL;

    if ((lint->nbpaths > 0) && (iter != NULL)) {
  while (*iter != 0) {
      if (*iter == '/')
    lastsegment = iter + 1;
      iter++;
  }
    }

    if (lint->defaultResourceLoader != NULL)
        code = lint->defaultResourceLoader(NULL, URL, ID, type, flags, out);
    else
        code = xmlNewInputFromUrl(URL, flags, out);
    if (code != XML_IO_ENOENT) {
        if ((lint->appOptions & XML_LINT_USE_LOAD_TRACE) && (code == XML_ERR_OK)) {
            fprintf(lint->errStream, "Loaded URL=\"%s\" ID=\"%s\"\n",
                    URL, ID ? ID : "(null)");
        }
        return(code);
    }

    for (i = 0; i < lint->nbpaths; i++) {
  xmlChar *newURL;

  newURL = xmlStrdup((const xmlChar *) lint->paths[i]);
  newURL = xmlStrcat(newURL, (const xmlChar *) "/");
  newURL = xmlStrcat(newURL, (const xmlChar *) lastsegment);
  if (newURL != NULL) {
            if (lint->defaultResourceLoader != NULL)
                code = lint->defaultResourceLoader(NULL, (const char *) newURL,
                                                   ID, type, flags, out);
            else
                code = xmlNewInputFromUrl((const char *) newURL, flags, out);
            if (code != XML_IO_ENOENT) {
                if ((lint->appOptions & XML_LINT_USE_LOAD_TRACE) && (code == XML_ERR_OK)) {
                    fprintf(lint->errStream, "Loaded URL=\"%s\" ID=\"%s\"\n",
                            newURL, ID ? ID : "(null)");
                }
          xmlFree(newURL);
                return(code);
            }
      xmlFree(newURL);
  }
    }

    return(XML_IO_ENOENT);
}

/************************************************************************
 *                  *
 *      Core parsing functions        *
 *                  *
 ************************************************************************/

static xmlDocPtr
parseXml(xmllintState *lint, const char *filename) {
    xmlParserCtxtPtr ctxt = lint->ctxt;
    xmlDocPtr doc;

#ifdef LIBXML_PUSH_ENABLED
    if (lint->appOptions & XML_LINT_PUSH_ENABLED) {
        FILE *f;
        int res;
        char chars[4096];

        if ((filename[0] == '-') && (filename[1] == 0)) {
            f = stdin;
        } else {
            f = fopen(filename, "rb");
            if (f == NULL) {
                fprintf(lint->errStream, "Can't open %s\n", filename);
                lint->progresult = XMLLINT_ERR_RDFILE;
                return(NULL);
            }
        }

        while ((res = fread(chars, 1, 4096, f)) > 0) {
            xmlParseChunk(ctxt, chars, res, 0);
        }
        xmlParseChunk(ctxt, chars, 0, 1);
        doc = xmlCtxtGetDocument(ctxt);

        if (f != stdin)
            fclose(f);

        return(doc);
    }
#endif /* LIBXML_PUSH_ENABLED */

#if HAVE_DECL_MMAP
    if (lint->appOptions & XML_LINT_MEMORY) {
        xmlParserInputPtr input;

        input = xmlNewInputFromMemory(filename,
                                      lint->memoryData, lint->memorySize,
                                      XML_INPUT_BUF_STATIC);
        if (input == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            return(NULL);
        }
        doc = xmlCtxtParseDocument(ctxt, input);
        return(doc);
    }
#endif

    if (strcmp(filename, "-") == 0)
        doc = xmlCtxtReadFd(ctxt, STDIN_FILENO, "-", NULL,
                            lint->parseOptions | XML_PARSE_UNZIP);
    else
        doc = xmlCtxtReadFile(ctxt, filename, NULL,
                              lint->parseOptions | XML_PARSE_UNZIP);

    return(doc);
}

#ifdef LIBXML_HTML_ENABLED
static xmlDocPtr
parseHtml(xmllintState *lint, const char *filename) {
    xmlParserCtxtPtr ctxt = lint->ctxt;
    xmlDocPtr doc;

#ifdef LIBXML_PUSH_ENABLED
    if (lint->appOptions & XML_LINT_PUSH_ENABLED) {
        FILE *f;
        int res;
        char chars[4096];

        if ((filename[0] == '-') && (filename[1] == 0)) {
            f = stdin;
        } else {
      f = fopen(filename, "rb");
            if (f == NULL) {
                fprintf(lint->errStream, "Can't open %s\n", filename);
                lint->progresult = XMLLINT_ERR_RDFILE;
                return(NULL);
            }
        }

        while ((res = fread(chars, 1, 4096, f)) > 0) {
            htmlParseChunk(ctxt, chars, res, 0);
        }
        htmlParseChunk(ctxt, chars, 0, 1);
        doc = xmlCtxtGetDocument(ctxt);

        if (f != stdin)
            fclose(f);

        return(doc);
    }
#endif /* LIBXML_PUSH_ENABLED */

#if HAVE_DECL_MMAP
    if (lint->appOptions & XML_LINT_MEMORY) {
        xmlParserInputPtr input;

        input = xmlNewInputFromMemory(filename,
                                      lint->memoryData, lint->memorySize,
                                      XML_INPUT_BUF_STATIC);
        if (input == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            return(NULL);
        }
        doc = htmlCtxtParseDocument(ctxt, input);
        return(doc);
    }
#endif

    if (strcmp(filename, "-") == 0)
        doc = htmlCtxtReadFd(ctxt, STDIN_FILENO, "-", NULL,
                             lint->htmlOptions);
    else
        doc = htmlCtxtReadFile(ctxt, filename, NULL, lint->htmlOptions);

    return(doc);
}
#endif /* LIBXML_HTML_ENABLED */

/************************************************************************
 *                  *
 * Memory allocation consumption debugging        *
 *                  *
 ************************************************************************/

#define XMLLINT_ABORT_ON_FAILURE 0

static void
myFreeFunc(void *mem) {
    xmlMemFree(mem);
}

static void *
myMallocFunc(size_t size) {
    void *ret;

    if (xmlMemUsed() + size > (size_t) xmllintMaxmem) {
#if XMLLINT_ABORT_ON_FAILURE
        abort();
#endif
        xmllintMaxmemReached = 1;
        xmllintOom = 1;
        return(NULL);
    }

    ret = xmlMemMalloc(size);
    if (ret == NULL)
        xmllintOom = 1;

    return(ret);
}

static void *
myReallocFunc(void *mem, size_t size) {
    void *ret;
    size_t oldsize = xmlMemSize(mem);

    if (xmlMemUsed() + size - oldsize > (size_t) xmllintMaxmem) {
#if XMLLINT_ABORT_ON_FAILURE
        abort();
#endif
        xmllintMaxmemReached = 1;
        xmllintOom = 1;
        return(NULL);
    }

    ret = xmlMemRealloc(mem, size);
    if (ret == NULL)
        xmllintOom = 1;

    return(ret);
}

static char *
myStrdupFunc(const char *str) {
    size_t size;
    char *ret;

    if (str == NULL)
        return(NULL);

    size = strlen(str) + 1;
    if (xmlMemUsed() + size > (size_t) xmllintMaxmem) {
#if XMLLINT_ABORT_ON_FAILURE
        abort();
#endif
        xmllintMaxmemReached = 1;
        xmllintOom = 1;
        return(NULL);
    }

    ret = xmlMemMalloc(size);
    if (ret == NULL) {
        xmllintOom = 1;
        return(NULL);
    }

    memcpy(ret, str, size);

    return(ret);
}

/************************************************************************
 *                  *
 * Internal timing routines to remove the necessity to have   *
 * unix-specific function calls.          *
 *                  *
 ************************************************************************/

static void
getTime(xmlTime *time) {
#ifdef _WIN32
    struct __timeb64 timebuffer;

    _ftime64(&timebuffer);
    time->sec = timebuffer.time;
    time->usec = timebuffer.millitm * 1000;
#else /* _WIN32 */
    struct timeval tv;

    gettimeofday(&tv, NULL);
    time->sec = tv.tv_sec;
    time->usec = tv.tv_usec;
#endif /* _WIN32 */
}

/*
 * startTimer: call where you want to start timing
 */
static void
startTimer(xmllintState *lint)
{
    getTime(&lint->begin);
}

/*
 * endTimer: call where you want to stop timing and to print out a
 *           message about the timing performed; format is a printf
 *           type argument
 */
static void LIBXML_ATTR_FORMAT(2,3)
endTimer(xmllintState *lint, const char *fmt, ...)
{
    xmlSeconds msec;
    va_list ap;

    getTime(&lint->end);
    msec = lint->end.sec - lint->begin.sec;
    msec *= 1000;
    msec += (lint->end.usec - lint->begin.usec) / 1000;

    va_start(ap, fmt);
    vfprintf(lint->errStream, fmt, ap);
    va_end(ap);

    fprintf(lint->errStream, " took %ld ms\n", (long) msec);
}

/************************************************************************
 *                  *
 *      SAX based tests         *
 *                  *
 ************************************************************************/

/*
 * empty SAX block
 */
static const xmlSAXHandler emptySAXHandler = {
    NULL, /* internalSubset */
    NULL, /* isStandalone */
    NULL, /* hasInternalSubset */
    NULL, /* hasExternalSubset */
    NULL, /* resolveEntity */
    NULL, /* getEntity */
    NULL, /* entityDecl */
    NULL, /* notationDecl */
    NULL, /* attributeDecl */
    NULL, /* elementDecl */
    NULL, /* unparsedEntityDecl */
    NULL, /* setDocumentLocator */
    NULL, /* startDocument */
    NULL, /* endDocument */
    NULL, /* startElement */
    NULL, /* endElement */
    NULL, /* reference */
    NULL, /* characters */
    NULL, /* ignorableWhitespace */
    NULL, /* processingInstruction */
    NULL, /* comment */
    NULL, /* xmlParserWarning */
    NULL, /* xmlParserError */
    NULL, /* xmlParserError */
    NULL, /* getParameterEntity */
    NULL, /* cdataBlock; */
    NULL, /* externalSubset; */
    XML_SAX2_MAGIC,
    NULL,
    NULL, /* startElementNs */
    NULL, /* endElementNs */
    NULL  /* xmlStructuredErrorFunc */
};

static int
isStandaloneDebug(void *ctx)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return(0);
    fprintf(stdout, "SAX.isStandalone()\n");
    return(0);
}

static int
hasInternalSubsetDebug(void *ctx)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return(0);
    fprintf(stdout, "SAX.hasInternalSubset()\n");
    return(0);
}

static int
hasExternalSubsetDebug(void *ctx)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return(0);
    fprintf(stdout, "SAX.hasExternalSubset()\n");
    return(0);
}

static void
internalSubsetDebug(void *ctx, const xmlChar *name,
         const xmlChar *ExternalID, const xmlChar *SystemID)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.internalSubset(%s,", name);
    if (ExternalID == NULL)
  fprintf(stdout, " ,");
    else
  fprintf(stdout, " %s,", ExternalID);
    if (SystemID == NULL)
  fprintf(stdout, " )\n");
    else
  fprintf(stdout, " %s)\n", SystemID);
}

static void
externalSubsetDebug(void *ctx, const xmlChar *name,
         const xmlChar *ExternalID, const xmlChar *SystemID)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.externalSubset(%s,", name);
    if (ExternalID == NULL)
  fprintf(stdout, " ,");
    else
  fprintf(stdout, " %s,", ExternalID);
    if (SystemID == NULL)
  fprintf(stdout, " )\n");
    else
  fprintf(stdout, " %s)\n", SystemID);
}

static xmlParserInputPtr
resolveEntityDebug(void *ctx, const xmlChar *publicId, const xmlChar *systemId)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return(NULL);
    /* xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; */


    fprintf(stdout, "SAX.resolveEntity(");
    if (publicId != NULL)
  fprintf(stdout, "%s", (char *)publicId);
    else
  fprintf(stdout, " ");
    if (systemId != NULL)
  fprintf(stdout, ", %s)\n", (char *)systemId);
    else
  fprintf(stdout, ", )\n");
    return(NULL);
}

static xmlEntityPtr
getEntityDebug(void *ctx, const xmlChar *name)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return(NULL);
    fprintf(stdout, "SAX.getEntity(%s)\n", name);
    return(NULL);
}

static xmlEntityPtr
getParameterEntityDebug(void *ctx, const xmlChar *name)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return(NULL);
    fprintf(stdout, "SAX.getParameterEntity(%s)\n", name);
    return(NULL);
}

static void
entityDeclDebug(void *ctx, const xmlChar *name, int type,
          const xmlChar *publicId, const xmlChar *systemId, xmlChar *content)
{
    xmllintState *lint = ctx;
    const xmlChar *nullstr = BAD_CAST "(null)";

    /* not all libraries handle printing null pointers nicely */
    if (publicId == NULL)
        publicId = nullstr;
    if (systemId == NULL)
        systemId = nullstr;
    if (content == NULL)
        content = (xmlChar *)nullstr;
    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.entityDecl(%s, %d, %s, %s, %s)\n",
            name, type, publicId, systemId, content);
}

static void
attributeDeclDebug(void *ctx, const xmlChar * elem,
                   const xmlChar * name, int type, int def,
                   const xmlChar * defaultValue, xmlEnumerationPtr tree)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
        return;
    if (defaultValue == NULL)
        fprintf(stdout, "SAX.attributeDecl(%s, %s, %d, %d, NULL, ...)\n",
                elem, name, type, def);
    else
        fprintf(stdout, "SAX.attributeDecl(%s, %s, %d, %d, %s, ...)\n",
                elem, name, type, def, defaultValue);
    xmlFreeEnumeration(tree);
}

static void
elementDeclDebug(void *ctx, const xmlChar *name, int type,
      xmlElementContentPtr content ATTRIBUTE_UNUSED)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.elementDecl(%s, %d, ...)\n",
            name, type);
}

static void
notationDeclDebug(void *ctx, const xmlChar *name,
       const xmlChar *publicId, const xmlChar *systemId)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.notationDecl(%s, %s, %s)\n",
            (char *) name, (char *) publicId, (char *) systemId);
}

static void
unparsedEntityDeclDebug(void *ctx, const xmlChar *name,
       const xmlChar *publicId, const xmlChar *systemId,
       const xmlChar *notationName)
{
    xmllintState *lint = ctx;
    const xmlChar *nullstr = BAD_CAST "(null)";

    if (publicId == NULL)
        publicId = nullstr;
    if (systemId == NULL)
        systemId = nullstr;
    if (notationName == NULL)
        notationName = nullstr;
    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.unparsedEntityDecl(%s, %s, %s, %s)\n",
            (char *) name, (char *) publicId, (char *) systemId,
      (char *) notationName);
}

static void
setDocumentLocatorDebug(void *ctx, xmlSAXLocatorPtr loc ATTRIBUTE_UNUSED)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.setDocumentLocator()\n");
}

static void
startDocumentDebug(void *ctx)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.startDocument()\n");
}

static void
endDocumentDebug(void *ctx)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.endDocument()\n");
}

static void
startElementDebug(void *ctx, const xmlChar *name, const xmlChar **atts)
{
    xmllintState *lint = ctx;
    int i;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.startElement(%s", (char *) name);
    if (atts != NULL) {
        for (i = 0;(atts[i] != NULL);i++) {
      fprintf(stdout, ", %s='", atts[i++]);
      if (atts[i] != NULL)
          fprintf(stdout, "%s'", atts[i]);
  }
    }
    fprintf(stdout, ")\n");
}

static void
endElementDebug(void *ctx, const xmlChar *name)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.endElement(%s)\n", (char *) name);
}

static void
charactersDebug(void *ctx, const xmlChar *ch, int len)
{
    xmllintState *lint = ctx;
    char out[40];
    int i;

    lint->callbacks++;
    if (lint->noout)
  return;
    for (i = 0;(i<len) && (i < 30);i++)
  out[i] = (char) ch[i];
    out[i] = 0;

    fprintf(stdout, "SAX.characters(%s, %d)\n", out, len);
}

static void
referenceDebug(void *ctx, const xmlChar *name)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.reference(%s)\n", name);
}

static void
ignorableWhitespaceDebug(void *ctx, const xmlChar *ch, int len)
{
    xmllintState *lint = ctx;
    char out[40];
    int i;

    lint->callbacks++;
    if (lint->noout)
  return;
    for (i = 0;(i<len) && (i < 30);i++)
  out[i] = ch[i];
    out[i] = 0;
    fprintf(stdout, "SAX.ignorableWhitespace(%s, %d)\n", out, len);
}

static void
processingInstructionDebug(void *ctx, const xmlChar *target,
                      const xmlChar *data)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    if (data != NULL)
  fprintf(stdout, "SAX.processingInstruction(%s, %s)\n",
    (char *) target, (char *) data);
    else
  fprintf(stdout, "SAX.processingInstruction(%s, NULL)\n",
    (char *) target);
}

static void
cdataBlockDebug(void *ctx, const xmlChar *value, int len)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.pcdata(%.20s, %d)\n",
      (char *) value, len);
}

static void
commentDebug(void *ctx, const xmlChar *value)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.comment(%s)\n", value);
}

static void LIBXML_ATTR_FORMAT(2,3)
warningDebug(void *ctx, const char *msg, ...)
{
    xmllintState *lint = ctx;
    va_list args;

    lint->callbacks++;
    if (lint->noout)
  return;
    va_start(args, msg);
    fprintf(stdout, "SAX.warning: ");
    vfprintf(stdout, msg, args);
    va_end(args);
}

static void LIBXML_ATTR_FORMAT(2,3)
errorDebug(void *ctx, const char *msg, ...)
{
    xmllintState *lint = ctx;
    va_list args;

    lint->callbacks++;
    if (lint->noout)
  return;
    va_start(args, msg);
    fprintf(stdout, "SAX.error: ");
    vfprintf(stdout, msg, args);
    va_end(args);
}

static void LIBXML_ATTR_FORMAT(2,3)
fatalErrorDebug(void *ctx, const char *msg, ...)
{
    xmllintState *lint = ctx;
    va_list args;

    lint->callbacks++;
    if (lint->noout)
  return;
    va_start(args, msg);
    fprintf(stdout, "SAX.fatalError: ");
    vfprintf(stdout, msg, args);
    va_end(args);
}

#ifdef LIBXML_SAX1_ENABLED
static const xmlSAXHandler debugSAXHandler = {
    internalSubsetDebug,
    isStandaloneDebug,
    hasInternalSubsetDebug,
    hasExternalSubsetDebug,
    resolveEntityDebug,
    getEntityDebug,
    entityDeclDebug,
    notationDeclDebug,
    attributeDeclDebug,
    elementDeclDebug,
    unparsedEntityDeclDebug,
    setDocumentLocatorDebug,
    startDocumentDebug,
    endDocumentDebug,
    startElementDebug,
    endElementDebug,
    referenceDebug,
    charactersDebug,
    ignorableWhitespaceDebug,
    processingInstructionDebug,
    commentDebug,
    warningDebug,
    errorDebug,
    fatalErrorDebug,
    getParameterEntityDebug,
    cdataBlockDebug,
    externalSubsetDebug,
    1,
    NULL,
    NULL,
    NULL,
    NULL
};
#endif

/*
 * SAX2 specific callbacks
 */

static void
startElementNsDebug(void *ctx,
                    const xmlChar *localname,
                    const xmlChar *prefix,
                    const xmlChar *URI,
        int nb_namespaces,
        const xmlChar **namespaces,
        int nb_attributes,
        int nb_defaulted,
        const xmlChar **attributes)
{
    xmllintState *lint = ctx;
    int i;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.startElementNs(%s", (char *) localname);
    if (prefix == NULL)
  fprintf(stdout, ", NULL");
    else
  fprintf(stdout, ", %s", (char *) prefix);
    if (URI == NULL)
  fprintf(stdout, ", NULL");
    else
  fprintf(stdout, ", '%s'", (char *) URI);
    fprintf(stdout, ", %d", nb_namespaces);

    if (namespaces != NULL) {
        for (i = 0;i < nb_namespaces * 2;i++) {
      fprintf(stdout, ", xmlns");
      if (namespaces[i] != NULL)
          fprintf(stdout, ":%s", namespaces[i]);
      i++;
      fprintf(stdout, "='%s'", namespaces[i]);
  }
    }
    fprintf(stdout, ", %d, %d", nb_attributes, nb_defaulted);
    if (attributes != NULL) {
        for (i = 0;i < nb_attributes * 5;i += 5) {
      if (attributes[i + 1] != NULL)
    fprintf(stdout, ", %s:%s='", attributes[i + 1], attributes[i]);
      else
    fprintf(stdout, ", %s='", attributes[i]);
      fprintf(stdout, "%.4s...', %d", attributes[i + 3],
        (int)(attributes[i + 4] - attributes[i + 3]));
  }
    }
    fprintf(stdout, ")\n");
}

static void
endElementNsDebug(void *ctx,
                  const xmlChar *localname,
                  const xmlChar *prefix,
                  const xmlChar *URI)
{
    xmllintState *lint = ctx;

    lint->callbacks++;
    if (lint->noout)
  return;
    fprintf(stdout, "SAX.endElementNs(%s", (char *) localname);
    if (prefix == NULL)
  fprintf(stdout, ", NULL");
    else
  fprintf(stdout, ", %s", (char *) prefix);
    if (URI == NULL)
  fprintf(stdout, ", NULL)\n");
    else
  fprintf(stdout, ", '%s')\n", (char *) URI);
}

static const xmlSAXHandler debugSAX2Handler = {
    internalSubsetDebug,
    isStandaloneDebug,
    hasInternalSubsetDebug,
    hasExternalSubsetDebug,
    resolveEntityDebug,
    getEntityDebug,
    entityDeclDebug,
    notationDeclDebug,
    attributeDeclDebug,
    elementDeclDebug,
    unparsedEntityDeclDebug,
    setDocumentLocatorDebug,
    startDocumentDebug,
    endDocumentDebug,
    startElementDebug, /* for HTML */
    endElementDebug,
    referenceDebug,
    charactersDebug,
    ignorableWhitespaceDebug,
    processingInstructionDebug,
    commentDebug,
    warningDebug,
    errorDebug,
    fatalErrorDebug,
    getParameterEntityDebug,
    cdataBlockDebug,
    externalSubsetDebug,
    XML_SAX2_MAGIC,
    NULL,
    startElementNsDebug,
    endElementNsDebug,
    NULL
};

static void
testSAX(xmllintState *lint, const char *filename) {
    lint->callbacks = 0;

#ifdef LIBXML_SCHEMAS_ENABLED
    if (lint->wxschemas != NULL) {
        int ret;
  xmlSchemaValidCtxtPtr vctxt;
        xmlParserInputBufferPtr buf;

        if (strcmp(filename, "-") == 0)
            buf = xmlParserInputBufferCreateFd(STDIN_FILENO,
                    XML_CHAR_ENCODING_NONE);
        else
            buf = xmlParserInputBufferCreateFilename(filename,
                    XML_CHAR_ENCODING_NONE);
        if (buf == NULL)
            return;

  vctxt = xmlSchemaNewValidCtxt(lint->wxschemas);
        if (vctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            xmlFreeParserInputBuffer(buf);
            return;
        }
  xmlSchemaValidateSetFilename(vctxt, filename);

  ret = xmlSchemaValidateStream(vctxt, buf, 0, lint->ctxt->sax, lint);
  if (lint->repeat == 1) {
      if (ret == 0) {
          if ((lint->appOptions & XML_LINT_QUIET) != XML_LINT_QUIET) {
              fprintf(lint->errStream, "%s validates\n", filename);
          }
      } else if (ret > 0) {
    fprintf(lint->errStream, "%s fails to validate\n", filename);
    lint->progresult = XMLLINT_ERR_VALID;
      } else {
    fprintf(lint->errStream, "%s validation generated an internal error\n",
           filename);
    lint->progresult = XMLLINT_ERR_VALID;
      }
  }
  xmlSchemaFreeValidCtxt(vctxt);
    } else
#endif
#ifdef LIBXML_HTML_ENABLED
    if (lint->appOptions & XML_LINT_HTML_ENABLED) {
        parseHtml(lint, filename);
    } else
#endif
    {
        parseXml(lint, filename);
    }
}

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

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

    if (lint->appOptions & XML_LINT_DEBUG_ENABLED) {
  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 (lint->patternc) {
        xmlChar *path = NULL;
        int match = -1;

  if (type == XML_READER_TYPE_ELEMENT) {
      /* do the check only on element start */
      match = xmlPatternMatch(lint->patternc,
                                    xmlTextReaderCurrentNode(reader));

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

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

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

static void streamFile(xmllintState *lint, const char *filename) {
    xmlParserInputBufferPtr input = NULL;
    FILE *errStream = lint->errStream;
    xmlTextReaderPtr reader;
    int ret;

#if HAVE_DECL_MMAP
    if (lint->appOptions & XML_LINT_MEMORY) {
  reader = xmlReaderForMemory(lint->memoryData, lint->memorySize,
                                    filename, NULL, lint->parseOptions);
        if (reader == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            return;
        }
    } else
#endif
    {
        xmlResetLastError();

        if (strcmp(filename, "-") == 0) {
            reader = xmlReaderForFd(STDIN_FILENO, "-", NULL,
                                    lint->parseOptions | XML_PARSE_UNZIP);
        }
        else {
            reader = xmlReaderForFile(filename, NULL,
                                      lint->parseOptions | XML_PARSE_UNZIP);
        }
        if (reader == NULL) {
            const xmlError *error = xmlGetLastError();

            if ((error != NULL) && (error->code == XML_ERR_NO_MEMORY)) {
                lint->progresult = XMLLINT_ERR_MEM;
            } else {
                fprintf(errStream, "Unable to open %s\n", filename);
                lint->progresult = XMLLINT_ERR_RDFILE;
            }
            return;
        }
    }

#ifdef LIBXML_PATTERN_ENABLED
    if (lint->patternc != NULL) {
        lint->patstream = xmlPatternGetStreamCtxt(lint->patternc);
  if (lint->patstream != NULL) {
      ret = xmlStreamPush(lint->patstream, NULL, NULL);
      if (ret < 0) {
    fprintf(errStream, "xmlStreamPush() failure\n");
    xmlFreeStreamCtxt(lint->patstream);
    lint->patstream = NULL;
            }
  }
    }
#endif


    xmlTextReaderSetResourceLoader(reader, xmllintResourceLoader, lint);
    if (lint->maxAmpl > 0)
        xmlTextReaderSetMaxAmplification(reader, lint->maxAmpl);

#ifdef LIBXML_RELAXNG_ENABLED
    if (lint->relaxng != NULL) {
        if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
            startTimer(lint);
        }
        ret = xmlTextReaderRelaxNGValidate(reader, lint->relaxng);
        if (ret < 0) {
            fprintf(errStream, "Relax-NG schema %s failed to compile\n",
                    lint->relaxng);
            lint->progresult = XMLLINT_ERR_SCHEMACOMP;
            lint->relaxng = NULL;
        }
        if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
            endTimer(lint, "Compiling the schemas");
        }
    }
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
    if (lint->schema != NULL) {
        if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
            startTimer(lint);
        }
        ret = xmlTextReaderSchemaValidate(reader, lint->schema);
        if (ret < 0) {
            fprintf(errStream, "XSD schema %s failed to compile\n",
                    lint->schema);
            lint->progresult = XMLLINT_ERR_SCHEMACOMP;
            lint->schema = NULL;
        }
        if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
            endTimer(lint, "Compiling the schemas");
        }
    }
#endif

    /*
     * Process all nodes in sequence
     */
    if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
        startTimer(lint);
    }
    ret = xmlTextReaderRead(reader);
    while (ret == 1) {
        if ((lint->appOptions & XML_LINT_DEBUG_ENABLED)
#ifdef LIBXML_PATTERN_ENABLED
            || (lint->patternc)
#endif
           )
            processNode(lint, reader);
        ret = xmlTextReaderRead(reader);
    }
    if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
#ifdef LIBXML_RELAXNG_ENABLED
        if (lint->relaxng != NULL)
            endTimer(lint, "Parsing and validating");
        else
#endif
#ifdef LIBXML_VALID_ENABLED
        if (lint->parseOptions & XML_PARSE_DTDVALID)
            endTimer(lint, "Parsing and validating");
        else
#endif
        endTimer(lint, "Parsing");
    }

#ifdef LIBXML_VALID_ENABLED
    if (lint->parseOptions & XML_PARSE_DTDVALID) {
        if (xmlTextReaderIsValid(reader) != 1) {
            fprintf(errStream,
                    "Document %s does not validate\n", filename);
            lint->progresult = XMLLINT_ERR_VALID;
        }
    }
#endif /* LIBXML_VALID_ENABLED */
#if defined(LIBXML_RELAXNG_ENABLED) || defined(LIBXML_SCHEMAS_ENABLED)
    {
        int hasSchema = 0;

#ifdef LIBXML_RELAXNG_ENABLED
        if (lint->relaxng != NULL)
            hasSchema = 1;
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
        if (lint->schema != NULL)
            hasSchema = 1;
#endif
        if (hasSchema) {
            if (xmlTextReaderIsValid(reader) != 1) {
                fprintf(errStream, "%s fails to validate\n", filename);
                lint->progresult = XMLLINT_ERR_VALID;
            } else {
                if ((lint->appOptions & XML_LINT_QUIET) != XML_LINT_QUIET) {
                    fprintf(errStream, "%s validates\n", filename);
                }
            }
        }
    }
#endif
    /*
     * Done, cleanup and status
     */
    xmlFreeTextReader(reader);
    xmlFreeParserInputBuffer(input);
    if (ret != 0) {
        fprintf(errStream, "%s : failed to parse\n", filename);
        lint->progresult = XMLLINT_ERR_UNCLASS;
    }
#ifdef LIBXML_PATTERN_ENABLED
    if (lint->patstream != NULL) {
  xmlFreeStreamCtxt(lint->patstream);
  lint->patstream = NULL;
    }
#endif
}

static void walkDoc(xmllintState *lint, xmlDocPtr doc) {
    FILE *errStream = lint->errStream;
    xmlTextReaderPtr reader;
    int ret;

#ifdef LIBXML_PATTERN_ENABLED
    if (lint->pattern != NULL) {
        xmlNodePtr root;
        const xmlChar *namespaces[22];
        int i;
        xmlNsPtr ns;

        root = xmlDocGetRootElement(doc);
        if (root == NULL ) {
            fprintf(errStream,
                    "Document does not have a root element");
            lint->progresult = XMLLINT_ERR_UNCLASS;
            return;
        }
        for (ns = root->nsDef, i = 0;ns != NULL && i < 20;ns=ns->next) {
            namespaces[i++] = ns->href;
            namespaces[i++] = ns->prefix;
        }
        namespaces[i++] = NULL;
        namespaces[i] = NULL;

        ret = xmlPatternCompileSafe((const xmlChar *) lint->pattern, doc->dict,
                                    0, &namespaces[0], &lint->patternc);
  if (lint->patternc == NULL) {
            if (ret < 0) {
                lint->progresult = XMLLINT_ERR_MEM;
            } else {
                fprintf(errStream, "Pattern %s failed to compile\n",
                        lint->pattern);
                lint->progresult = XMLLINT_ERR_SCHEMAPAT;
            }
            goto error;
  }

        lint->patstream = xmlPatternGetStreamCtxt(lint->patternc);
        if (lint->patstream == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            goto error;
        }

        ret = xmlStreamPush(lint->patstream, NULL, NULL);
        if (ret < 0) {
            fprintf(errStream, "xmlStreamPush() failure\n");
            lint->progresult = XMLLINT_ERR_MEM;
            goto error;
        }
    }
#endif /* LIBXML_PATTERN_ENABLED */
    reader = xmlReaderWalker(doc);
    if (reader != NULL) {
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }
  ret = xmlTextReaderRead(reader);
  while (ret == 1) {
      if ((lint->appOptions & XML_LINT_DEBUG_ENABLED)
#ifdef LIBXML_PATTERN_ENABLED
          || (lint->patternc)
#endif
         )
    processNode(lint, reader);
      ret = xmlTextReaderRead(reader);
  }
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "walking through the doc");
  }
  xmlFreeTextReader(reader);
  if (ret != 0) {
      fprintf(errStream, "failed to walk through the doc\n");
      lint->progresult = XMLLINT_ERR_UNCLASS;
  }
    } else {
  fprintf(errStream, "Failed to create a reader from the document\n");
  lint->progresult = XMLLINT_ERR_UNCLASS;
    }

#ifdef LIBXML_PATTERN_ENABLED
error:
    if (lint->patternc != NULL) {
        xmlFreePattern(lint->patternc);
        lint->patternc = NULL;
    }
    if (lint->patstream != NULL) {
  xmlFreeStreamCtxt(lint->patstream);
  lint->patstream = NULL;
    }
#endif
}
#endif /* LIBXML_READER_ENABLED */

#ifdef LIBXML_XPATH_ENABLED
/************************************************************************
 *                  *
 *      XPath Query                                     *
 *                  *
 ************************************************************************/

static void
doXPathDump(xmllintState *lint, xmlXPathObjectPtr cur) {
    switch(cur->type) {
        case XPATH_NODESET: {
#ifdef LIBXML_OUTPUT_ENABLED
            xmlOutputBufferPtr buf;
            xmlNodePtr node;
            int i;

            if ((cur->nodesetval == NULL) || (cur->nodesetval->nodeNr <= 0)) {
                lint->progresult = XMLLINT_ERR_XPATH_EMPTY;
                if ((lint->appOptions & XML_LINT_QUIET) != XML_LINT_QUIET) {
                    fprintf(lint->errStream, "XPath set is empty\n");
                }
                break;
            }
            buf = xmlOutputBufferCreateFile(stdout, NULL);
            if (buf == NULL) {
                lint->progresult = XMLLINT_ERR_MEM;
                return;
            }
            for (i = 0;i < cur->nodesetval->nodeNr;i++) {
                node = cur->nodesetval->nodeTab[i];
                xmlNodeDumpOutput(buf, NULL, node, 0, 0, NULL);
                xmlOutputBufferWrite(buf, 1, "\n");
            }
            xmlOutputBufferClose(buf);
#else
            printf("xpath returned %d nodes\n", cur->nodesetval->nodeNr);
#endif
      break;
        }
        case XPATH_BOOLEAN:
      if (cur->boolval) printf("true\n");
      else printf("false\n");
      break;
        case XPATH_NUMBER:
      switch (xmlXPathIsInf(cur->floatval)) {
      case 1:
    printf("Infinity\n");
    break;
      case -1:
    printf("-Infinity\n");
    break;
      default:
    if (xmlXPathIsNaN(cur->floatval)) {
        printf("NaN\n");
    } else {
        printf("%0g\n", cur->floatval);
    }
      }
      break;
        case XPATH_STRING:
      printf("%s\n", (const char *) cur->stringval);
      break;
        case XPATH_UNDEFINED:
      fprintf(lint->errStream, "XPath Object is uninitialized\n");
            lint->progresult = XMLLINT_ERR_XPATH;
      break;
  default:
      fprintf(lint->errStream, "XPath object of unexpected type\n");
            lint->progresult = XMLLINT_ERR_XPATH;
      break;
    }
}

static void
doXPathQuery(xmllintState *lint, xmlDocPtr doc, const char *query) {
    xmlXPathContextPtr ctxt = NULL;
    xmlXPathCompExprPtr comp = NULL;
    xmlXPathObjectPtr res = NULL;

    ctxt = xmlXPathNewContext(doc);
    if (ctxt == NULL) {
        lint->progresult = XMLLINT_ERR_MEM;
        goto error;
    }

    comp = xmlXPathCtxtCompile(ctxt, BAD_CAST query);
    if (comp == NULL) {
        fprintf(lint->errStream, "XPath compilation failure\n");
        lint->progresult = XMLLINT_ERR_XPATH;
        goto error;
    }

#ifdef LIBXML_DEBUG_ENABLED
    if (lint->appOptions & XML_LINT_DEBUG_ENABLED) {
        xmlXPathDebugDumpCompExpr(stdout, comp, 0);
        printf("\n");
    }
#endif

    ctxt->node = (xmlNodePtr) doc;
    res = xmlXPathCompiledEval(comp, ctxt);
    if (res == NULL) {
        fprintf(lint->errStream, "XPath evaluation failure\n");
        lint->progresult = XMLLINT_ERR_XPATH;
        goto error;
    }

    doXPathDump(lint, res);

error:
    xmlXPathFreeObject(res);
    xmlXPathFreeCompExpr(comp);
    xmlXPathFreeContext(ctxt);
}
#endif /* LIBXML_XPATH_ENABLED */

/************************************************************************
 *                  *
 *      Tree Test processing        *
 *                  *
 ************************************************************************/

static xmlDocPtr
parseFile(xmllintState *lint, const char *filename) {
    xmlDocPtr doc = NULL;

    if ((lint->appOptions & XML_LINT_GENERATE) && (filename == NULL)) {
        xmlNodePtr n;

        doc = xmlNewDoc(BAD_CAST "1.0");
        if (doc == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            return(NULL);
        }
        n = xmlNewDocNode(doc, NULL, BAD_CAST "info", NULL);
        if (n == NULL) {
            xmlFreeDoc(doc);
            lint->progresult = XMLLINT_ERR_MEM;
            return(NULL);
        }
        if (xmlNodeSetContent(n, BAD_CAST "abc") < 0) {
            xmlFreeNode(n);
            xmlFreeDoc(doc);
            lint->progresult = XMLLINT_ERR_MEM;
            return(NULL);
        }
        xmlDocSetRootElement(doc, n);

        return(doc);
    }

#ifdef LIBXML_HTML_ENABLED
    if (lint->appOptions & XML_LINT_HTML_ENABLED) {
        doc = parseHtml(lint, filename);
        return(doc);
    }
#endif /* LIBXML_HTML_ENABLED */
    {
        doc = parseXml(lint, filename);
    }

    if (doc == NULL) {
        if (lint->ctxt->errNo == XML_ERR_NO_MEMORY)
            lint->progresult = XMLLINT_ERR_MEM;
        else
      lint->progresult = XMLLINT_ERR_RDFILE;
    } else {
        xmlParserStatus status = xmlCtxtGetStatus(lint->ctxt);
        if ((lint->parseOptions & XML_PARSE_DTDVALID) &&
            (status & XML_STATUS_DTD_VALIDATION_FAILED))
            lint->progresult = XMLLINT_ERR_VALID;

        if ((lint->appOptions & XML_LINT_STRICT_NAMESPACE) &&
            (status & XML_STATUS_NOT_NS_WELL_FORMED)) {
            lint->progresult = XMLLINT_ERR_RDFILE;
        }
    }

    return(doc);
}

static void
parseAndPrintFile(xmllintState *lint, const char *filename) {
    FILE *errStream = lint->errStream;
    xmlDocPtr doc;

    /* Avoid unused variable warning */
    (void) errStream;

    if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1))
  startTimer(lint);

    doc = parseFile(lint, filename);
    if (doc == NULL) {
        if (lint->progresult == XMLLINT_RETURN_OK)
            lint->progresult = XMLLINT_ERR_UNCLASS;
  return;
    }

    if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
  endTimer(lint, "Parsing");
    }

    if (lint->appOptions & XML_LINT_DROP_DTD) {
  xmlDtdPtr dtd;

  dtd = xmlGetIntSubset(doc);
  if (dtd != NULL) {
      xmlUnlinkNode((xmlNodePtr)dtd);
            doc->intSubset = dtd;
  }
    }

#ifdef LIBXML_XINCLUDE_ENABLED
    if (lint->appOptions & XML_LINT_XINCLUDE) {
        xmlXIncludeCtxt *xinc;
        int res;

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }

        xinc = xmlXIncludeNewContext(doc);
        if (xinc == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            goto done;
        }
        xmlXIncludeSetResourceLoader(xinc, xmllintResourceLoader, lint);
        xmlXIncludeSetFlags(xinc, lint->parseOptions);
        res = xmlXIncludeProcessNode(xinc, (xmlNode *) doc);
        xmlXIncludeFreeContext(xinc);
        if (res < 0) {
            /*
             * Return an error but continue to print the document
             * to match long-standing behavior.
             */
      lint->progresult = XMLLINT_ERR_UNCLASS;
        }

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "Xinclude processing");
  }
    }
#endif

    /*
     * shell interaction
     */
    if (lint->appOptions & XML_LINT_NAVIGATING_SHELL) {
#ifdef LIBXML_XPATH_ENABLED
        xmlXPathOrderDocElems(doc);
#endif
        xmllintShell(doc, filename, stdout);
        goto done;
    }

#ifdef LIBXML_XPATH_ENABLED
    if (lint->xpathquery != NULL) {
  xmlXPathOrderDocElems(doc);
        doXPathQuery(lint, doc, lint->xpathquery);
    }
#endif

    /*
     * test intermediate copy if needed.
     */
    if (lint->appOptions & XML_LINT_COPY_ENABLED) {
        xmlDocPtr tmp;

        tmp = doc;
  if (lint->appOptions & XML_LINT_TIMINGS) {
      startTimer(lint);
  }
  doc = xmlCopyDoc(doc, 1);
        if (doc == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            xmlFreeDoc(tmp);
            return;
        }
  if (lint->appOptions & XML_LINT_TIMINGS) {
      endTimer(lint, "Copying");
  }
  if (lint->appOptions & XML_LINT_TIMINGS) {
      startTimer(lint);
  }
  xmlFreeDoc(tmp);
  if (lint->appOptions & XML_LINT_TIMINGS) {
      endTimer(lint, "Freeing original");
  }
    }

#ifdef LIBXML_VALID_ENABLED
    if ((lint->appOptions & XML_LINT_VALID_INSERTIONS)
#ifdef LIBXML_HTML_ENABLED
        && ((lint->appOptions & XML_LINT_HTML_ENABLED) != XML_LINT_HTML_ENABLED)
#endif
    ) {
        const xmlChar* list[256];
  int nb, i;
  xmlNodePtr node;

  if (doc->children != NULL) {
      node = doc->children;
      while ((node != NULL) &&
                   ((node->type != XML_ELEMENT_NODE) ||
                    (node->last == NULL)))
                node = node->next;
      if (node != NULL) {
    nb = xmlValidGetValidElements(node->last, NULL, list, 256);
    if (nb < 0) {
        fprintf(errStream, "could not get valid list of elements\n");
    } else if (nb == 0) {
        fprintf(errStream, "No element can be inserted under root\n");
    } else {
        fprintf(errStream, "%d element types can be inserted under root:\n",
               nb);
        for (i = 0;i < nb;i++) {
       fprintf(errStream, "%s\n", (char *) list[i]);
        }
    }
      }
  }
    } else
#endif /* LIBXML_VALID_ENABLED */
#ifdef LIBXML_READER_ENABLED
    if (lint->appOptions & XML_LINT_USE_WALKER) {
        walkDoc(lint, doc);
    }
#endif /* LIBXML_READER_ENABLED */
#ifdef LIBXML_OUTPUT_ENABLED
    if (lint->noout == 0) {
#ifdef LIBXML_ZLIB_ENABLED
        if (lint->appOptions & XML_LINT_ZLIB_COMPRESSION)
            xmlSetDocCompressMode(doc, 9);
#endif

  /*
   * print it.
   */
#ifdef LIBXML_DEBUG_ENABLED
  if ((lint->appOptions & XML_LINT_DEBUG_ENABLED) != XML_LINT_DEBUG_ENABLED) {
#endif
      if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
    startTimer(lint);
      }
#ifdef LIBXML_C14N_ENABLED
            if (lint->appOptions & XML_LINT_CANONICAL_V1_0) {
          xmlChar *result = NULL;
    int size;

    size = xmlC14NDocDumpMemory(doc, NULL, XML_C14N_1_0, NULL, 1, &result);
    if (size >= 0) {
        if (write(1, result, size) == -1) {
            fprintf(errStream, "Can't write data\n");
        }
        xmlFree(result);
    } else {
        fprintf(errStream, "Failed to canonicalize\n");
        lint->progresult = XMLLINT_ERR_OUT;
    }
      } else if (lint->appOptions & XML_LINT_CANONICAL_V1_1) {
          xmlChar *result = NULL;
    int size;

    size = xmlC14NDocDumpMemory(doc, NULL, XML_C14N_1_1, NULL, 1, &result);
    if (size >= 0) {
        if (write(1, result, size) == -1) {
            fprintf(errStream, "Can't write data\n");
        }
        xmlFree(result);
    } else {
        fprintf(errStream, "Failed to canonicalize\n");
        lint->progresult = XMLLINT_ERR_OUT;
    }
      } else if (lint->appOptions & XML_LINT_CANONICAL_EXE) {
          xmlChar *result = NULL;
    int size;

    size = xmlC14NDocDumpMemory(doc, NULL, XML_C14N_EXCLUSIVE_1_0, NULL, 1, &result);
    if (size >= 0) {
        if (write(1, result, size) == -1) {
            fprintf(errStream, "Can't write data\n");
        }
        xmlFree(result);
    } else {
        fprintf(errStream, "Failed to canonicalize\n");
        lint->progresult = XMLLINT_ERR_OUT;
    }
      } else
#endif
#ifdef LIBXML_ZLIB_ENABLED
      if (lint->appOptions & XML_LINT_ZLIB_COMPRESSION) {
    xmlSaveFile(lint->output ? lint->output : "-", doc);
      } else
#endif
            {
          xmlSaveCtxtPtr ctxt;
    int saveOpts = 0;

                if (lint->format == 1)
        saveOpts |= XML_SAVE_FORMAT;
                else if (lint->format == 2)
                    saveOpts |= XML_SAVE_WSNONSIG;

#if defined(LIBXML_HTML_ENABLED)
                if (lint->appOptions & XML_LINT_XML_OUT)
                    saveOpts |= XML_SAVE_AS_XML;
#endif

    if (lint->output == NULL)
        ctxt = xmlSaveToFd(STDOUT_FILENO, lint->encoding,
                                       saveOpts);
    else
        ctxt = xmlSaveToFilename(lint->output, lint->encoding,
                                             saveOpts);

    if (ctxt != NULL) {
                    if (lint->indentString != NULL)
                        xmlSaveSetIndentString(ctxt, lint->indentString);

        if (xmlSaveDoc(ctxt, doc) < 0) {
      fprintf(errStream, "failed save to %s\n",
        lint->output ? lint->output : "-");
      lint->progresult = XMLLINT_ERR_OUT;
        }
        xmlSaveClose(ctxt);
    } else {
        lint->progresult = XMLLINT_ERR_OUT;
    }
      }
      if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
    endTimer(lint, "Saving");
      }
#ifdef LIBXML_DEBUG_ENABLED
  } else {
      FILE *out;
      if (lint->output == NULL)
          out = stdout;
      else {
    out = fopen(lint->output, "wb");
      }
      if (out != NULL) {
    xmlDebugDumpDocument(out, doc);

    if (lint->output != NULL)
        fclose(out);
      } else {
    fprintf(errStream, "failed to open %s\n", lint->output);
    lint->progresult = XMLLINT_ERR_OUT;
      }
  }
#endif
    }
#endif /* LIBXML_OUTPUT_ENABLED */

#ifdef LIBXML_VALID_ENABLED
    /*
     * A posteriori validation test
     */
    if ((lint->dtdvalid != NULL) || (lint->dtdvalidfpi != NULL)) {
  xmlDtdPtr dtd;

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }
  if (lint->dtdvalid != NULL)
      dtd = xmlParseDTD(NULL, BAD_CAST lint->dtdvalid);
  else
      dtd = xmlParseDTD(BAD_CAST lint->dtdvalidfpi, NULL);
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "Parsing DTD");
  }
  if (dtd == NULL) {
      if (lint->dtdvalid != NULL)
    fprintf(errStream, "Could not parse DTD %s\n",
                        lint->dtdvalid);
      else
    fprintf(errStream, "Could not parse DTD %s\n",
                        lint->dtdvalidfpi);
      lint->progresult = XMLLINT_ERR_DTD;
  } else {
      xmlValidCtxtPtr cvp;

      cvp = xmlNewValidCtxt();
      if (cvp == NULL) {
                lint->progresult = XMLLINT_ERR_MEM;
                xmlFreeDtd(dtd);
                return;
      }

      if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
    startTimer(lint);
      }
      if (!xmlValidateDtd(cvp, doc, dtd)) {
    if (lint->dtdvalid != NULL)
        fprintf(errStream,
          "Document %s does not validate against %s\n",
          filename, lint->dtdvalid);
    else
        fprintf(errStream,
          "Document %s does not validate against %s\n",
          filename, lint->dtdvalidfpi);
    lint->progresult = XMLLINT_ERR_VALID;
      }
      if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
    endTimer(lint, "Validating against DTD");
      }
      xmlFreeValidCtxt(cvp);
      xmlFreeDtd(dtd);
  }
    } else if (lint->appOptions & XML_LINT_POST_VALIDATION) {
  xmlValidCtxtPtr cvp;

  cvp = xmlNewValidCtxt();
  if (cvp == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            xmlFreeDoc(doc);
            return;
  }

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }
  if (!xmlValidateDocument(cvp, doc)) {
      fprintf(errStream,
        "Document %s does not validate\n", filename);
      lint->progresult = XMLLINT_ERR_VALID;
  }
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "Validating");
  }
  xmlFreeValidCtxt(cvp);
    }
#endif /* LIBXML_VALID_ENABLED */
#ifdef LIBXML_SCHEMATRON_ENABLED
    if (lint->wxschematron != NULL) {
  xmlSchematronValidCtxtPtr ctxt;
  int ret;
  int flag;

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }

  if (lint->appOptions & XML_LINT_DEBUG_ENABLED)
      flag = XML_SCHEMATRON_OUT_XML;
  else
      flag = XML_SCHEMATRON_OUT_TEXT;
  if (lint->noout)
      flag |= XML_SCHEMATRON_OUT_QUIET;
  ctxt = xmlSchematronNewValidCtxt(lint->wxschematron, flag);
        if (ctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            xmlFreeDoc(doc);
            return;
        }
  ret = xmlSchematronValidateDoc(ctxt, doc);
  if (ret == 0) {
      if ((lint->appOptions & XML_LINT_QUIET) != XML_LINT_QUIET) {
          fprintf(errStream, "%s validates\n", filename);
      }
  } else if (ret > 0) {
      fprintf(errStream, "%s fails to validate\n", filename);
      lint->progresult = XMLLINT_ERR_VALID;
  } else {
      fprintf(errStream, "%s validation generated an internal error\n",
       filename);
      lint->progresult = XMLLINT_ERR_VALID;
  }
  xmlSchematronFreeValidCtxt(ctxt);
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "Validating");
  }
    }
#endif

#ifdef LIBXML_RELAXNG_ENABLED
    if (lint->relaxngschemas != NULL) {
  xmlRelaxNGValidCtxtPtr ctxt;
  int ret;

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }

  ctxt = xmlRelaxNGNewValidCtxt(lint->relaxngschemas);
        if (ctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            xmlFreeDoc(doc);
            return;
        }
  ret = xmlRelaxNGValidateDoc(ctxt, doc);
  if (ret == 0) {
      if ((lint->appOptions & XML_LINT_QUIET) != XML_LINT_QUIET) {
          fprintf(errStream, "%s validates\n", filename);
      }
  } else if (ret > 0) {
      fprintf(errStream, "%s fails to validate\n", filename);
      lint->progresult = XMLLINT_ERR_VALID;
  } else {
      fprintf(errStream, "%s validation generated an internal error\n",
       filename);
      lint->progresult = XMLLINT_ERR_VALID;
  }
  xmlRelaxNGFreeValidCtxt(ctxt);
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "Validating");
  }
    }
#endif /* LIBXML_RELAXNG_ENABLED */

#ifdef LIBXML_SCHEMAS_ENABLED
    if (lint->wxschemas != NULL) {
  xmlSchemaValidCtxtPtr ctxt;
  int ret;

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      startTimer(lint);
  }

  ctxt = xmlSchemaNewValidCtxt(lint->wxschemas);
        if (ctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            xmlFreeDoc(doc);
            return;
        }
  ret = xmlSchemaValidateDoc(ctxt, doc);
  if (ret == 0) {
      if ((lint->appOptions & XML_LINT_QUIET) != XML_LINT_QUIET) {
          fprintf(errStream, "%s validates\n", filename);
      }
  } else if (ret > 0) {
      fprintf(errStream, "%s fails to validate\n", filename);
      lint->progresult = XMLLINT_ERR_VALID;
  } else {
      fprintf(errStream, "%s validation generated an internal error\n",
       filename);
      lint->progresult = XMLLINT_ERR_VALID;
  }
  xmlSchemaFreeValidCtxt(ctxt);
  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
      endTimer(lint, "Validating");
  }
    }
#endif /* LIBXML_SCHEMAS_ENABLED */

    /* Avoid unused label warning */
    goto done;

done:
    /*
     * free it.
     */
    if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
  startTimer(lint);
    }
    xmlFreeDoc(doc);
    if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat == 1)) {
  endTimer(lint, "Freeing");
    }
}

/************************************************************************
 *                  *
 *      Usage and Main          *
 *                  *
 ************************************************************************/

static void showVersion(FILE *errStream, const char *name) {
    fprintf(errStream, "%s: using libxml version %s\n", name, xmlParserVersion);
    fprintf(errStream, "   compiled with: ");
    if (xmlHasFeature(XML_WITH_THREAD)) fprintf(errStream, "Threads ");
    fprintf(errStream, "Tree ");
    if (xmlHasFeature(XML_WITH_OUTPUT)) fprintf(errStream, "Output ");
    if (xmlHasFeature(XML_WITH_PUSH)) fprintf(errStream, "Push ");
    if (xmlHasFeature(XML_WITH_READER)) fprintf(errStream, "Reader ");
    if (xmlHasFeature(XML_WITH_PATTERN)) fprintf(errStream, "Patterns ");
    if (xmlHasFeature(XML_WITH_WRITER)) fprintf(errStream, "Writer ");
    if (xmlHasFeature(XML_WITH_SAX1)) fprintf(errStream, "SAXv1 ");
    if (xmlHasFeature(XML_WITH_VALID)) fprintf(errStream, "DTDValid ");
    if (xmlHasFeature(XML_WITH_HTML)) fprintf(errStream, "HTML ");
    if (xmlHasFeature(XML_WITH_C14N)) fprintf(errStream, "C14N ");
    if (xmlHasFeature(XML_WITH_CATALOG)) fprintf(errStream, "Catalog ");
    if (xmlHasFeature(XML_WITH_XPATH)) fprintf(errStream, "XPath ");
    if (xmlHasFeature(XML_WITH_XPTR)) fprintf(errStream, "XPointer ");
    if (xmlHasFeature(XML_WITH_XINCLUDE)) fprintf(errStream, "XInclude ");
    if (xmlHasFeature(XML_WITH_ICONV)) fprintf(errStream, "Iconv ");
    if (xmlHasFeature(XML_WITH_ICU)) fprintf(errStream, "ICU ");
    if (xmlHasFeature(XML_WITH_ISO8859X)) fprintf(errStream, "ISO8859X ");
    if (xmlHasFeature(XML_WITH_REGEXP))
        fprintf(errStream, "Regexps Automata ");
    if (xmlHasFeature(XML_WITH_RELAXNG)) fprintf(errStream, "RelaxNG ");
    if (xmlHasFeature(XML_WITH_SCHEMAS)) fprintf(errStream, "Schemas ");
    if (xmlHasFeature(XML_WITH_SCHEMATRON)) fprintf(errStream, "Schematron ");
    if (xmlHasFeature(XML_WITH_MODULES)) fprintf(errStream, "Modules ");
    if (xmlHasFeature(XML_WITH_DEBUG)) fprintf(errStream, "Debug ");
    if (xmlHasFeature(XML_WITH_ZLIB)) fprintf(errStream, "Zlib ");
    if (xmlHasFeature(XML_WITH_LZMA)) fprintf(errStream, "Lzma ");
    fprintf(errStream, "\n");
}

static void usage(FILE *f, const char *name) {
    fprintf(f, "Usage : %s [options] XMLfiles ...\n", name);
#ifdef LIBXML_OUTPUT_ENABLED
    fprintf(f, "\tParse the XML files and output the result of the parsing\n");
#else
    fprintf(f, "\tParse the XML files\n");
#endif /* LIBXML_OUTPUT_ENABLED */
    fprintf(f, "\t--version : display the version of the XML library used\n");
    fprintf(f, "\t--shell : run a navigating shell\n");
    fprintf(f, "\t--debug : show additional debug information\n");
    fprintf(f, "\t--copy : used to test the internal copy implementation\n");
    fprintf(f, "\t--recover : output what was parsable on broken XML documents\n");
    fprintf(f, "\t--huge : remove any internal arbitrary parser limits\n");
    fprintf(f, "\t--noent : substitute entity references by their value\n");
    fprintf(f, "\t--noenc : ignore any encoding specified inside the document\n");
    fprintf(f, "\t--noout : don't output the result tree\n");
    fprintf(f, "\t--path 'paths': provide a set of paths for resources\n");
    fprintf(f, "\t--load-trace : print trace of all external entities loaded\n");
    fprintf(f, "\t--nonet : refuse to fetch DTDs or entities over network\n");
    fprintf(f, "\t--nocompact : do not generate compact text nodes\n");
#ifdef LIBXML_VALID_ENABLED
    fprintf(f, "\t--valid : validate the document in addition to std well-formed check\n");
    fprintf(f, "\t--postvalid : do a posteriori validation, i.e after parsing\n");
    fprintf(f, "\t--dtdvalid URL : do a posteriori validation against a given DTD\n");
    fprintf(f, "\t--dtdvalidfpi FPI : same but name the DTD with a Public Identifier\n");
    fprintf(f, "\t--insert : ad-hoc test for valid insertions\n");
#endif /* LIBXML_VALID_ENABLED */
    fprintf(f, "\t--strict-namespace : Return application failure if document has any namespace errors\n");
    fprintf(f, "\t--quiet : be quiet when succeeded\n");
    fprintf(f, "\t--timing : print some timings\n");
    fprintf(f, "\t--repeat : repeat 100 times, for timing or profiling\n");
    fprintf(f, "\t--dropdtd : remove the DOCTYPE of the input docs\n");
#ifdef LIBXML_HTML_ENABLED
    fprintf(f, "\t--html : use the HTML parser\n");
    fprintf(f, "\t--nodefdtd : do not default HTML doctype\n");
#ifdef LIBXML_OUTPUT_ENABLED
    fprintf(f, "\t--xmlout : force to use the XML serializer when using --html\n");
#endif
#endif
#ifdef LIBXML_PUSH_ENABLED
    fprintf(f, "\t--push : use the push mode of the parser\n");
#endif /* LIBXML_PUSH_ENABLED */
#if HAVE_DECL_MMAP
    fprintf(f, "\t--memory : parse from memory\n");
#endif
    fprintf(f, "\t--maxmem nbbytes : limits memory allocation to nbbytes bytes\n");
    fprintf(f, "\t--nowarning : do not emit warnings from parser/validator\n");
    fprintf(f, "\t--noblanks : drop (ignorable?) blanks spaces\n");
    fprintf(f, "\t--nocdata : replace cdata section with text nodes\n");
    fprintf(f, "\t--nodict : create document without dictionary\n");
    fprintf(f, "\t--pedantic : enable additional warnings\n");
#ifdef LIBXML_OUTPUT_ENABLED
    fprintf(f, "\t--output file or -o file: save to a given file\n");
    fprintf(f, "\t--format : reformat/reindent the output\n");
    fprintf(f, "\t--encode encoding : output in the given encoding\n");
    fprintf(f, "\t--pretty STYLE : pretty-print in a particular style\n");
    fprintf(f, "\t                 0 Do not pretty print\n");
    fprintf(f, "\t                 1 Format the XML content, as --format\n");
    fprintf(f, "\t                 2 Add whitespace inside tags, preserving content\n");
#ifdef LIBXML_ZLIB_ENABLED
    fprintf(f, "\t--compress : turn on gzip compression of output\n");
#endif
#ifdef LIBXML_C14N_ENABLED
    fprintf(f, "\t--c14n : save in W3C canonical format v1.0 (with comments)\n");
    fprintf(f, "\t--c14n11 : save in W3C canonical format v1.1 (with comments)\n");
    fprintf(f, "\t--exc-c14n : save in W3C exclusive canonical format (with comments)\n");
#endif /* LIBXML_C14N_ENABLED */
#endif /* LIBXML_OUTPUT_ENABLED */
    fprintf(f, "\t--nsclean : remove redundant namespace declarations\n");
#ifdef LIBXML_CATALOG_ENABLED
    fprintf(f, "\t--catalogs : use SGML catalogs from $SGML_CATALOG_FILES\n");
    fprintf(f, "\t             otherwise XML Catalogs starting from \n");
    fprintf(f, "\t         file://" XML_SYSCONFDIR "/xml/catalog "
            "are activated by default\n");
    fprintf(f, "\t--nocatalogs: deactivate all catalogs\n");
#endif
    fprintf(f, "\t--auto : generate a small doc on the fly\n");
#ifdef LIBXML_XINCLUDE_ENABLED
    fprintf(f, "\t--xinclude : do XInclude processing\n");
    fprintf(f, "\t--noxincludenode : same but do not generate XInclude nodes\n");
    fprintf(f, "\t--nofixup-base-uris : do not fixup xml:base uris\n");
#endif
    fprintf(f, "\t--loaddtd : fetch external DTD\n");
    fprintf(f, "\t--dtdattr : loaddtd + populate the tree with inherited attributes \n");
#ifdef LIBXML_READER_ENABLED
    fprintf(f, "\t--stream : use the streaming interface to process very large files\n");
    fprintf(f, "\t--walker : create a reader and walk though the resulting doc\n");
#ifdef LIBXML_PATTERN_ENABLED
    fprintf(f, "\t--pattern pattern_value : test the pattern support\n");
#endif
#endif /* LIBXML_READER_ENABLED */
#ifdef LIBXML_RELAXNG_ENABLED
    fprintf(f, "\t--relaxng schema : do RelaxNG validation against the schema\n");
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
    fprintf(f, "\t--schema schema : do validation against the WXS schema\n");
#endif
#ifdef LIBXML_SCHEMATRON_ENABLED
    fprintf(f, "\t--schematron schema : do validation against a schematron\n");
#endif
#ifdef LIBXML_SAX1_ENABLED
    fprintf(f, "\t--sax1: use the old SAX1 interfaces for processing\n");
#endif
    fprintf(f, "\t--sax: do not build a tree but work just at the SAX level\n");
    fprintf(f, "\t--oldxml10: use XML-1.0 parsing rules before the 5th edition\n");
#ifdef LIBXML_XPATH_ENABLED
    fprintf(f, "\t--xpath expr: evaluate the XPath expression, imply --noout\n");
#endif
    fprintf(f, "\t--max-ampl value: set maximum amplification factor\n");

    fprintf(f, "\nLibxml project home page: https://gitlab.gnome.org/GNOME/libxml2\n");
}

static int
parseInteger(unsigned long *result, FILE *errStream, const char *ctxt,
             const char *str, unsigned long min, unsigned long max) {
    char *strEnd;
    unsigned long val;

    errno = 0;
    val = strtoul(str, &strEnd, 10);
    if (errno == EINVAL || *strEnd != 0) {
        fprintf(errStream, "%s: invalid integer: %s\n", ctxt, str);
        return(-1);
    }
    if (errno != 0 || val < min || val > max) {
        fprintf(errStream, "%s: integer out of range: %s\n", ctxt, str);
        return(-1);
    }

    *result = val;
    return(0);
}

static int
skipArgs(const char *arg) {
    if ((!strcmp(arg, "-path")) ||
        (!strcmp(arg, "--path")) ||
        (!strcmp(arg, "-maxmem")) ||
        (!strcmp(arg, "--maxmem")) ||
#ifdef LIBXML_OUTPUT_ENABLED
        (!strcmp(arg, "-o")) ||
        (!strcmp(arg, "-output")) ||
        (!strcmp(arg, "--output")) ||
        (!strcmp(arg, "-encode")) ||
        (!strcmp(arg, "--encode")) ||
        (!strcmp(arg, "-pretty")) ||
        (!strcmp(arg, "--pretty")) ||
#endif
#ifdef LIBXML_VALID_ENABLED
        (!strcmp(arg, "-dtdvalid")) ||
        (!strcmp(arg, "--dtdvalid")) ||
        (!strcmp(arg, "-dtdvalidfpi")) ||
        (!strcmp(arg, "--dtdvalidfpi")) ||
#endif
#ifdef LIBXML_RELAXNG_ENABLED
        (!strcmp(arg, "-relaxng")) ||
        (!strcmp(arg, "--relaxng")) ||
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
        (!strcmp(arg, "-schema")) ||
        (!strcmp(arg, "--schema")) ||
#endif
#ifdef LIBXML_SCHEMATRON_ENABLED
        (!strcmp(arg, "-schematron")) ||
        (!strcmp(arg, "--schematron")) ||
#endif
#if defined(LIBXML_READER_ENABLED) && defined(LIBXML_PATTERN_ENABLED)
        (!strcmp(arg, "-pattern")) ||
        (!strcmp(arg, "--pattern")) ||
#endif
#ifdef LIBXML_XPATH_ENABLED
        (!strcmp(arg, "-xpath")) ||
        (!strcmp(arg, "--xpath")) ||
#endif
        (!strcmp(arg, "-max-ampl")) ||
        (!strcmp(arg, "--max-ampl"))
    ) {
        return(1);
    }

    return(0);
}

static void
xmllintInit(xmllintState *lint) {
    memset(lint, 0, sizeof(*lint));

    lint->repeat = 1;
    lint->progresult = XMLLINT_RETURN_OK;
    lint->parseOptions = XML_PARSE_COMPACT | XML_PARSE_BIG_LINES;
#ifdef LIBXML_HTML_ENABLED
    lint->htmlOptions = HTML_PARSE_COMPACT | HTML_PARSE_BIG_LINES;
#endif
}

static void
xmllintOptWarnNoSupport(FILE *errStream, const char *opt, const char *nosupp) {
    fprintf(errStream, "Warning: Option %s doesn't support %s\n", opt, nosupp);
}

static int
xmllintParseOptions(xmllintState *lint, int argc, const char **argv) {
    FILE *errStream = lint->errStream;
    const char *specialMode = NULL;
    int i;

    if (argc <= 1) {
        usage(errStream, argv[0]);
        return(XMLLINT_ERR_UNCLASS);
    }

    for (i = 1; i < argc ; i++) {
        unsigned long val;

        if (argv[i][0] != '-' || argv[i][1] == 0)
            continue;

        if ((!strcmp(argv[i], "-maxmem")) ||
            (!strcmp(argv[i], "--maxmem"))) {
            i++;
            if (i >= argc) {
                fprintf(errStream, "maxmem: missing integer value\n");
                return(XMLLINT_ERR_UNCLASS);
            }
            if (parseInteger(&val, errStream, "maxmem", argv[i],
                             0, INT_MAX) < 0)
                return(XMLLINT_ERR_UNCLASS);
            lint->maxmem = val;
        } else if ((!strcmp(argv[i], "-debug")) ||
                   (!strcmp(argv[i], "--debug"))) {
            lint->appOptions |= XML_LINT_DEBUG_ENABLED;
        } else if ((!strcmp(argv[i], "-shell")) ||
                   (!strcmp(argv[i], "--shell"))) {
            lint->appOptions |= XML_LINT_NAVIGATING_SHELL;
        } else if ((!strcmp(argv[i], "-copy")) ||
                   (!strcmp(argv[i], "--copy"))) {
            lint->appOptions |= XML_LINT_COPY_ENABLED;
        } else if ((!strcmp(argv[i], "-recover")) ||
                   (!strcmp(argv[i], "--recover"))) {
            lint->parseOptions |= XML_PARSE_RECOVER;
        } else if ((!strcmp(argv[i], "-huge")) ||
                   (!strcmp(argv[i], "--huge"))) {
            lint->parseOptions |= XML_PARSE_HUGE;
#ifdef LIBXML_HTML_ENABLED
            lint->htmlOptions |= HTML_PARSE_HUGE;
#endif
        } else if ((!strcmp(argv[i], "-noent")) ||
                   (!strcmp(argv[i], "--noent"))) {
            lint->parseOptions |= XML_PARSE_NOENT;
        } else if ((!strcmp(argv[i], "-noenc")) ||
                   (!strcmp(argv[i], "--noenc"))) {
            lint->parseOptions |= XML_PARSE_IGNORE_ENC;
#ifdef LIBXML_HTML_ENABLED
            lint->htmlOptions |= HTML_PARSE_IGNORE_ENC;
#endif
        } else if ((!strcmp(argv[i], "-nsclean")) ||
                   (!strcmp(argv[i], "--nsclean"))) {
            lint->parseOptions |= XML_PARSE_NSCLEAN;
        } else if ((!strcmp(argv[i], "-nocdata")) ||
                   (!strcmp(argv[i], "--nocdata"))) {
            lint->parseOptions |= XML_PARSE_NOCDATA;
        } else if ((!strcmp(argv[i], "-nodict")) ||
                   (!strcmp(argv[i], "--nodict"))) {
            lint->parseOptions |= XML_PARSE_NODICT;
        } else if ((!strcmp(argv[i], "-version")) ||
                   (!strcmp(argv[i], "--version"))) {
            showVersion(errStream, argv[0]);
            lint->version = 1;
        } else if ((!strcmp(argv[i], "-noout")) ||
                   (!strcmp(argv[i], "--noout"))) {
            lint->noout = 1;
#ifdef LIBXML_HTML_ENABLED
        } else if ((!strcmp(argv[i], "-html")) ||
                   (!strcmp(argv[i], "--html"))) {
            lint->appOptions |= XML_LINT_HTML_ENABLED;
        } else if ((!strcmp(argv[i], "-nodefdtd")) ||
                   (!strcmp(argv[i], "--nodefdtd"))) {
            lint->htmlOptions |= HTML_PARSE_NODEFDTD;
#ifdef LIBXML_OUTPUT_ENABLED
        } else if ((!strcmp(argv[i], "-xmlout")) ||
                   (!strcmp(argv[i], "--xmlout"))) {
            lint->appOptions |= XML_LINT_XML_OUT;
#endif
#endif /* LIBXML_HTML_ENABLED */
        } else if ((!strcmp(argv[i], "-loaddtd")) ||
                   (!strcmp(argv[i], "--loaddtd"))) {
            lint->parseOptions |= XML_PARSE_DTDLOAD;
        } else if ((!strcmp(argv[i], "-dtdattr")) ||
                   (!strcmp(argv[i], "--dtdattr"))) {
            lint->parseOptions |= XML_PARSE_DTDATTR;
#ifdef LIBXML_VALID_ENABLED
        } else if ((!strcmp(argv[i], "-valid")) ||
                   (!strcmp(argv[i], "--valid"))) {
            lint->parseOptions |= XML_PARSE_DTDVALID;
        } else if ((!strcmp(argv[i], "-postvalid")) ||
                   (!strcmp(argv[i], "--postvalid"))) {
            lint->appOptions |= XML_LINT_POST_VALIDATION;
            lint->parseOptions |= XML_PARSE_DTDLOAD;
        } else if ((!strcmp(argv[i], "-dtdvalid")) ||
                   (!strcmp(argv[i], "--dtdvalid"))) {
            i++;
            lint->dtdvalid = argv[i];
            lint->parseOptions |= XML_PARSE_DTDLOAD;
        } else if ((!strcmp(argv[i], "-dtdvalidfpi")) ||
                   (!strcmp(argv[i], "--dtdvalidfpi"))) {
            i++;
            lint->dtdvalidfpi = argv[i];
            lint->parseOptions |= XML_PARSE_DTDLOAD;
        } else if ((!strcmp(argv[i], "-insert")) ||
                   (!strcmp(argv[i], "--insert"))) {
            lint->appOptions |= XML_LINT_VALID_INSERTIONS;
#endif /* LIBXML_VALID_ENABLED */
        } else if ((!strcmp(argv[i], "-strict-namespace")) ||
            (!strcmp(argv[i], "--strict-namespace"))) {
            lint->appOptions |= XML_LINT_STRICT_NAMESPACE;
        } else if ((!strcmp(argv[i], "-dropdtd")) ||
                   (!strcmp(argv[i], "--dropdtd"))) {
            lint->appOptions |= XML_LINT_DROP_DTD;
        } else if ((!strcmp(argv[i], "-quiet")) ||
                   (!strcmp(argv[i], "--quiet"))) {
            lint->appOptions |= XML_LINT_QUIET;
        } else if ((!strcmp(argv[i], "-timing")) ||
                   (!strcmp(argv[i], "--timing"))) {
            lint->appOptions |= XML_LINT_TIMINGS;
        } else if ((!strcmp(argv[i], "-auto")) ||
                   (!strcmp(argv[i], "--auto"))) {
            lint->appOptions |= XML_LINT_GENERATE;
        } else if ((!strcmp(argv[i], "-repeat")) ||
                   (!strcmp(argv[i], "--repeat"))) {
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
            lint->repeat = 2;
#else
            if (lint->repeat > 1)
                lint->repeat *= 10;
            else
                lint->repeat = 100;
#endif
#ifdef LIBXML_PUSH_ENABLED
        } else if ((!strcmp(argv[i], "-push")) ||
                   (!strcmp(argv[i], "--push"))) {
            lint->appOptions |= XML_LINT_PUSH_ENABLED;
#endif /* LIBXML_PUSH_ENABLED */
#if HAVE_DECL_MMAP
        } else if ((!strcmp(argv[i], "-memory")) ||
                   (!strcmp(argv[i], "--memory"))) {
            lint->appOptions |= XML_LINT_MEMORY;
#endif
#ifdef LIBXML_XINCLUDE_ENABLED
        } else if ((!strcmp(argv[i], "-xinclude")) ||
                   (!strcmp(argv[i], "--xinclude"))) {
            lint->appOptions |= XML_LINT_XINCLUDE;
            lint->parseOptions |= XML_PARSE_XINCLUDE;
        } else if ((!strcmp(argv[i], "-noxincludenode")) ||
                   (!strcmp(argv[i], "--noxincludenode"))) {
            lint->appOptions |= XML_LINT_XINCLUDE;
            lint->parseOptions |= XML_PARSE_XINCLUDE;
            lint->parseOptions |= XML_PARSE_NOXINCNODE;
        } else if ((!strcmp(argv[i], "-nofixup-base-uris")) ||
                   (!strcmp(argv[i], "--nofixup-base-uris"))) {
            lint->appOptions |= XML_LINT_XINCLUDE;
            lint->parseOptions |= XML_PARSE_XINCLUDE;
            lint->parseOptions |= XML_PARSE_NOBASEFIX;
#endif
        } else if ((!strcmp(argv[i], "-nowarning")) ||
                   (!strcmp(argv[i], "--nowarning"))) {
            lint->parseOptions |= XML_PARSE_NOWARNING;
            lint->parseOptions &= ~XML_PARSE_PEDANTIC;
#ifdef LIBXML_HTML_ENABLED
            lint->htmlOptions |= HTML_PARSE_NOWARNING;
#endif
        } else if ((!strcmp(argv[i], "-pedantic")) ||
                   (!strcmp(argv[i], "--pedantic"))) {
            lint->parseOptions |= XML_PARSE_PEDANTIC;
            lint->parseOptions &= ~XML_PARSE_NOWARNING;
#ifdef LIBXML_CATALOG_ENABLED
        } else if ((!strcmp(argv[i], "-catalogs")) ||
                   (!strcmp(argv[i], "--catalogs"))) {
            lint->appOptions |= XML_LINT_USE_CATALOGS;
        } else if ((!strcmp(argv[i], "-nocatalogs")) ||
                   (!strcmp(argv[i], "--nocatalogs"))) {
            lint->appOptions |= XML_LINT_USE_NO_CATALOGS;
            lint->parseOptions |= XML_PARSE_NO_SYS_CATALOG;
#endif
        } else if ((!strcmp(argv[i], "-noblanks")) ||
                   (!strcmp(argv[i], "--noblanks"))) {
            lint->parseOptions |= XML_PARSE_NOBLANKS;
#ifdef LIBXML_HTML_ENABLED
            lint->htmlOptions |= HTML_PARSE_NOBLANKS;
#endif
#ifdef LIBXML_OUTPUT_ENABLED
        } else if ((!strcmp(argv[i], "-o")) ||
                   (!strcmp(argv[i], "-output")) ||
                   (!strcmp(argv[i], "--output"))) {
            i++;
            lint->output = argv[i];
        } else if ((!strcmp(argv[i], "-format")) ||
                   (!strcmp(argv[i], "--format"))) {
            lint->format = 1;
            lint->parseOptions |= XML_PARSE_NOBLANKS;
#ifdef LIBXML_HTML_ENABLED
            lint->htmlOptions |= HTML_PARSE_NOBLANKS;
#endif
        } else if ((!strcmp(argv[i], "-encode")) ||
                   (!strcmp(argv[i], "--encode"))) {
            i++;
            lint->encoding = argv[i];
        } else if ((!strcmp(argv[i], "-pretty")) ||
                   (!strcmp(argv[i], "--pretty"))) {
            i++;
            if (i >= argc) {
                fprintf(errStream, "pretty: missing integer value\n");
                return(XMLLINT_ERR_UNCLASS);
            }
            if (parseInteger(&val, errStream, "pretty", argv[i],
                             0, 2) < 0)
                return(XMLLINT_ERR_UNCLASS);
            lint->format = val;
#ifdef LIBXML_ZLIB_ENABLED
        } else if ((!strcmp(argv[i], "-compress")) ||
                   (!strcmp(argv[i], "--compress"))) {
            lint->appOptions |= XML_LINT_ZLIB_COMPRESSION;
#endif
#ifdef LIBXML_C14N_ENABLED
        } else if ((!strcmp(argv[i], "-c14n")) ||
                   (!strcmp(argv[i], "--c14n"))) {
            lint->appOptions |= XML_LINT_CANONICAL_V1_0;
            lint->parseOptions |= XML_PARSE_NOENT | XML_PARSE_DTDATTR | XML_PARSE_DTDLOAD;
        } else if ((!strcmp(argv[i], "-c14n11")) ||
                   (!strcmp(argv[i], "--c14n11"))) {
            lint->appOptions |= XML_LINT_CANONICAL_V1_1;
            lint->parseOptions |= XML_PARSE_NOENT | XML_PARSE_DTDATTR | XML_PARSE_DTDLOAD;
        } else if ((!strcmp(argv[i], "-exc-c14n")) ||
                   (!strcmp(argv[i], "--exc-c14n"))) {
            lint->appOptions |= XML_LINT_CANONICAL_EXE;
            lint->parseOptions |= XML_PARSE_NOENT | XML_PARSE_DTDATTR | XML_PARSE_DTDLOAD;
#endif /* LIBXML_C14N_ENABLED */
#endif /* LIBXML_OUTPUT_ENABLED */
#ifdef LIBXML_READER_ENABLED
        } else if ((!strcmp(argv[i], "-stream")) ||
                   (!strcmp(argv[i], "--stream"))) {
             lint->appOptions |= XML_LINT_USE_STREAMING;
        } else if ((!strcmp(argv[i], "-walker")) ||
                   (!strcmp(argv[i], "--walker"))) {
             lint->appOptions |= XML_LINT_USE_WALKER;
             lint->noout = 1;
#ifdef LIBXML_PATTERN_ENABLED
        } else if ((!strcmp(argv[i], "-pattern")) ||
                   (!strcmp(argv[i], "--pattern"))) {
            i++;
            lint->pattern = argv[i];
#endif
#endif /* LIBXML_READER_ENABLED */
#ifdef LIBXML_SAX1_ENABLED
        } else if ((!strcmp(argv[i], "-sax1")) ||
                   (!strcmp(argv[i], "--sax1"))) {
            lint->parseOptions |= XML_PARSE_SAX1;
#endif /* LIBXML_SAX1_ENABLED */
        } else if ((!strcmp(argv[i], "-sax")) ||
                   (!strcmp(argv[i], "--sax"))) {
            lint->appOptions |= XML_LINT_SAX_ENABLED;
#ifdef LIBXML_RELAXNG_ENABLED
        } else if ((!strcmp(argv[i], "-relaxng")) ||
                   (!strcmp(argv[i], "--relaxng"))) {
            i++;
            lint->relaxng = argv[i];
            lint->parseOptions |= XML_PARSE_NOENT;
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
        } else if ((!strcmp(argv[i], "-schema")) ||
                 (!strcmp(argv[i], "--schema"))) {
            i++;
            lint->schema = argv[i];
            lint->parseOptions |= XML_PARSE_NOENT;
#endif
#ifdef LIBXML_SCHEMATRON_ENABLED
        } else if ((!strcmp(argv[i], "-schematron")) ||
                   (!strcmp(argv[i], "--schematron"))) {
            i++;
            lint->schematron = argv[i];
            lint->parseOptions |= XML_PARSE_NOENT;
#endif
        } else if ((!strcmp(argv[i], "-nonet")) ||
                   (!strcmp(argv[i], "--nonet"))) {
            lint->parseOptions |= XML_PARSE_NONET;
        } else if ((!strcmp(argv[i], "-nocompact")) ||
                   (!strcmp(argv[i], "--nocompact"))) {
            lint->parseOptions &= ~XML_PARSE_COMPACT;
#ifdef LIBXML_HTML_ENABLED
            lint->htmlOptions &= ~HTML_PARSE_COMPACT;
#endif
        } else if ((!strcmp(argv[i], "-load-trace")) ||
                   (!strcmp(argv[i], "--load-trace"))) {
            lint->appOptions |= XML_LINT_USE_LOAD_TRACE;
        } else if ((!strcmp(argv[i], "-path")) ||
                   (!strcmp(argv[i], "--path"))) {
            i++;
            parsePath(lint, BAD_CAST argv[i]);
#ifdef LIBXML_XPATH_ENABLED
        } else if ((!strcmp(argv[i], "-xpath")) ||
                   (!strcmp(argv[i], "--xpath"))) {
            i++;
            lint->noout++;
            lint->xpathquery = argv[i];
#endif
        } else if ((!strcmp(argv[i], "-oldxml10")) ||
                   (!strcmp(argv[i], "--oldxml10"))) {
            lint->parseOptions |= XML_PARSE_OLD10;
        } else if ((!strcmp(argv[i], "-max-ampl")) ||
                   (!strcmp(argv[i], "--max-ampl"))) {
            i++;
            if (i >= argc) {
                fprintf(errStream, "max-ampl: missing integer value\n");
                return(XMLLINT_ERR_UNCLASS);
            }
            if (parseInteger(&val, errStream, "max-ampl", argv[i],
                             1, UINT_MAX) < 0)
                return(XMLLINT_ERR_UNCLASS);
            lint->maxAmpl = val;
        } else {
            fprintf(errStream, "Unknown option %s\n", argv[i]);
            usage(errStream, argv[0]);
            return(XMLLINT_ERR_UNCLASS);
        }
    }

    if (lint->appOptions & XML_LINT_NAVIGATING_SHELL)
        lint->repeat = 1;

#ifdef LIBXML_READER_ENABLED
    if (lint->appOptions & XML_LINT_USE_STREAMING) {
        specialMode = "--stream";

        if (lint->appOptions & XML_LINT_SAX_ENABLED)
            xmllintOptWarnNoSupport(errStream, "--stream", "--sax");
#ifdef LIBXML_PUSH_ENABLED
        if (lint->appOptions & XML_LINT_PUSH_ENABLED)
            xmllintOptWarnNoSupport(errStream, "--stream", "--push");
#endif
#ifdef LIBXML_HTML_ENABLED
        if (lint->appOptions & XML_LINT_HTML_ENABLED)
            xmllintOptWarnNoSupport(errStream, "--stream", "--html");
#endif
    }
#endif /* LIBXML_READER_ENABLED */

    if (lint->appOptions & XML_LINT_SAX_ENABLED) {
        specialMode = "--sax";

#ifdef LIBXML_XINCLUDE_ENABLED
        if (lint->appOptions & XML_LINT_XINCLUDE)
            xmllintOptWarnNoSupport(errStream, "--sax", "--xinclude");
#endif
#ifdef LIBXML_RELAXNG_ENABLED
        if (lint->relaxng != NULL)
            xmllintOptWarnNoSupport(errStream, "--sax", "--relaxng");
#endif
    }

    if (specialMode != NULL) {
        if (lint->appOptions & XML_LINT_GENERATE)
            xmllintOptWarnNoSupport(errStream, specialMode, "--auto");
        if (lint->appOptions & XML_LINT_DROP_DTD)
            xmllintOptWarnNoSupport(errStream, specialMode, "--dropdtd");
        if (lint->appOptions & XML_LINT_NAVIGATING_SHELL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--shell");
        if (lint->appOptions & XML_LINT_COPY_ENABLED)
            xmllintOptWarnNoSupport(errStream, specialMode, "--copy");
#ifdef LIBXML_XPATH_ENABLED
        if (lint->xpathquery != NULL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--xpath");
#endif
#ifdef LIBXML_READER_ENABLED
        if (lint->appOptions & XML_LINT_USE_WALKER)
            xmllintOptWarnNoSupport(errStream, specialMode, "--walker");
#endif
#ifdef LIBXML_VALID_ENABLED
        if (lint->appOptions & XML_LINT_VALID_INSERTIONS)
            xmllintOptWarnNoSupport(errStream, specialMode, "--insert");
        if (lint->dtdvalid != NULL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--dtdvalid");
        if (lint->dtdvalidfpi != NULL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--dtdvalidfpi");
        if (lint->appOptions & XML_LINT_POST_VALIDATION)
            xmllintOptWarnNoSupport(errStream, specialMode, "--postvalid");
#endif
#ifdef LIBXML_SCHEMATRON_ENABLED
        if (lint->schematron != NULL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--schematron");
#endif
#ifdef LIBXML_OUTPUT_ENABLED
        if (lint->output != NULL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--output");
        if (lint->encoding != NULL)
            xmllintOptWarnNoSupport(errStream, specialMode, "--encode");
        if (lint->format > 0)
            xmllintOptWarnNoSupport(errStream, specialMode,
                                    "--format or -pretty");
#ifdef LIBXML_ZLIB_ENABLED
        if (lint->appOptions & XML_LINT_ZLIB_COMPRESSION)
            xmllintOptWarnNoSupport(errStream, specialMode, "--compress");
#endif
#ifdef LIBXML_HTML_ENABLED
        if (lint->appOptions & XML_LINT_XML_OUT)
            xmllintOptWarnNoSupport(errStream, specialMode, "--xmlout");
#endif
#ifdef LIBXML_C14N_ENABLED
        if (lint->appOptions & XML_LINT_CANONICAL_V1_0)
            xmllintOptWarnNoSupport(errStream, specialMode, "--c14n");
        if (lint->appOptions & XML_LINT_CANONICAL_V1_1)
            xmllintOptWarnNoSupport(errStream, specialMode, "--c14n11");
        if (lint->appOptions & XML_LINT_CANONICAL_EXE)
            xmllintOptWarnNoSupport(errStream, specialMode, "--exc-c14n");
#endif
#endif /* LIBXML_OUTPUT_ENABLED */
    }

#if defined(LIBXML_READER_ENABLED) && defined(LIBXML_PATTERN_ENABLED)
    if (lint->pattern && !((lint->appOptions & XML_LINT_USE_STREAMING) || (lint->appOptions & XML_LINT_USE_WALKER)))
        fprintf(errStream, "Warning: Option %s requires %s\n",
                "--pattern", "--stream or --walker");
#endif

#ifdef LIBXML_HTML_ENABLED
    if (lint->appOptions & XML_LINT_HTML_ENABLED) {
        if (lint->parseOptions & XML_PARSE_DTDATTR)
            xmllintOptWarnNoSupport(errStream, "--html", "--dtdattr");
        if (lint->parseOptions & XML_PARSE_DTDLOAD)
            xmllintOptWarnNoSupport(errStream, "--html", "--loaddtd");
        if (lint->maxAmpl)
            xmllintOptWarnNoSupport(errStream, "--html", "--max-ampl");
        if (lint->parseOptions & XML_PARSE_NOCDATA)
            xmllintOptWarnNoSupport(errStream, "--html", "--nocdata");
        if (lint->parseOptions & XML_PARSE_NODICT)
            xmllintOptWarnNoSupport(errStream, "--html", "--nodict");
        if (lint->parseOptions & XML_PARSE_NOENT)
            xmllintOptWarnNoSupport(errStream, "--html", "--noent");
        if (lint->parseOptions & XML_PARSE_NONET)
            xmllintOptWarnNoSupport(errStream, "--html", "--nonet");
        if (lint->parseOptions & XML_PARSE_NSCLEAN)
            xmllintOptWarnNoSupport(errStream, "--html", "--nsclean");
        if (lint->parseOptions & XML_PARSE_OLD10)
            xmllintOptWarnNoSupport(errStream, "--html", "--oldxml10");
        if (lint->parseOptions & XML_PARSE_PEDANTIC)
            xmllintOptWarnNoSupport(errStream, "--html", "--pedantic");
        if (lint->parseOptions & XML_PARSE_DTDVALID)
            xmllintOptWarnNoSupport(errStream, "--html", "--valid");
        if (lint->parseOptions & XML_PARSE_SAX1)
            xmllintOptWarnNoSupport(errStream, "--html", "--sax1");
    } else {
        if (lint->htmlOptions & HTML_PARSE_NODEFDTD)
            fprintf(errStream, "Warning: Option %s requires %s\n",
                    "--nodefdtd", "--html");
#ifdef LIBXML_OUTPUT_ENABLED
        if (lint->appOptions & XML_LINT_XML_OUT)
            fprintf(errStream, "Warning: Option %s requires %s\n",
                    "--xmlout", "--html");
#endif
    }
#endif

    return(XMLLINT_RETURN_OK);
}

int
xmllintMain(int argc, const char **argv, FILE *errStream,
            xmlResourceLoader loader) {
    xmllintState state, *lint;
    int i, j, res;
    int files = 0;

#ifdef _WIN32
    _setmode(_fileno(stdin), _O_BINARY);
    _setmode(_fileno(stdout), _O_BINARY);
    _setmode(_fileno(stderr), _O_BINARY);
#endif

    lint = &state;
    xmllintInit(lint);
    lint->errStream = errStream;
    lint->defaultResourceLoader = loader;

    res = xmllintParseOptions(lint, argc, argv);
    if (res != XMLLINT_RETURN_OK) {
        return(res);
    }

    /*
     * Note that we must not make any memory allocations through xmlMalloc
     * before calling xmlMemSetup.
     */
    if (lint->maxmem != 0) {
        xmllintMaxmem = 0;
        xmllintMaxmemReached = 0;
        xmllintOom = 0;
        xmlMemSetup(myFreeFunc, myMallocFunc, myReallocFunc, myStrdupFunc);
    }

    LIBXML_TEST_VERSION

#ifdef LIBXML_CATALOG_ENABLED
    if ((lint->appOptions & XML_LINT_USE_NO_CATALOGS) != XML_LINT_USE_NO_CATALOGS) {
  if (lint->appOptions & XML_LINT_USE_CATALOGS) {
      const char *catal;

      catal = getenv("SGML_CATALOG_FILES");
      if (catal != NULL) {
    xmlLoadCatalogs(catal);
      } else {
    fprintf(errStream, "Variable $SGML_CATALOG_FILES not set\n");
      }
  }
    }
#endif

#ifdef LIBXML_OUTPUT_ENABLED
    {
        const char *indent = getenv("XMLLINT_INDENT");
        if (indent != NULL) {
            lint->indentString = indent;
        }
    }
#endif

#ifdef LIBXML_SCHEMATRON_ENABLED
    if ((lint->schematron != NULL) && ((lint->appOptions & XML_LINT_SAX_ENABLED) != XML_LINT_SAX_ENABLED)
#ifdef LIBXML_READER_ENABLED
        && ((lint->appOptions & XML_LINT_USE_STREAMING) != XML_LINT_USE_STREAMING)
#endif /* LIBXML_READER_ENABLED */
  ) {
  xmlSchematronParserCtxtPtr ctxt;

        /* forces loading the DTDs */
  lint->parseOptions |= XML_PARSE_DTDLOAD;
  if (lint->appOptions & XML_LINT_TIMINGS) {
      startTimer(lint);
  }
  ctxt = xmlSchematronNewParserCtxt(lint->schematron);
        if (ctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            goto error;
        }
  lint->wxschematron = xmlSchematronParse(ctxt);
  xmlSchematronFreeParserCtxt(ctxt);
  if (lint->wxschematron == NULL) {
      fprintf(errStream, "Schematron schema %s failed to compile\n",
                    lint->schematron);
            lint->progresult = XMLLINT_ERR_SCHEMACOMP;
            goto error;
  }
  if (lint->appOptions & XML_LINT_TIMINGS) {
      endTimer(lint, "Compiling the schemas");
  }
    }
#endif

#ifdef LIBXML_RELAXNG_ENABLED
    if ((lint->relaxng != NULL) && ((lint->appOptions & XML_LINT_SAX_ENABLED) != XML_LINT_SAX_ENABLED)
#ifdef LIBXML_READER_ENABLED
        && ((lint->appOptions & XML_LINT_USE_STREAMING) != XML_LINT_USE_STREAMING)
#endif /* LIBXML_READER_ENABLED */
  ) {
  xmlRelaxNGParserCtxtPtr ctxt;

        /* forces loading the DTDs */
  lint->parseOptions |= XML_PARSE_DTDLOAD;
  if (lint->appOptions & XML_LINT_TIMINGS) {
      startTimer(lint);
  }
  ctxt = xmlRelaxNGNewParserCtxt(lint->relaxng);
        if (ctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            goto error;
        }
        xmlRelaxNGSetResourceLoader(ctxt, xmllintResourceLoader, lint);
  lint->relaxngschemas = xmlRelaxNGParse(ctxt);
  xmlRelaxNGFreeParserCtxt(ctxt);
  if (lint->relaxngschemas == NULL) {
      fprintf(errStream, "Relax-NG schema %s failed to compile\n",
                    lint->relaxng);
            lint->progresult = XMLLINT_ERR_SCHEMACOMP;
            goto error;
  }
  if (lint->appOptions & XML_LINT_TIMINGS) {
      endTimer(lint, "Compiling the schemas");
  }
    }
#endif /* LIBXML_RELAXNG_ENABLED */

#ifdef LIBXML_SCHEMAS_ENABLED
    if ((lint->schema != NULL)
#ifdef LIBXML_READER_ENABLED
        && ((lint->appOptions& XML_LINT_USE_STREAMING) != XML_LINT_USE_STREAMING)
#endif
  ) {
  xmlSchemaParserCtxtPtr ctxt;

  if (lint->appOptions & XML_LINT_TIMINGS) {
      startTimer(lint);
  }
  ctxt = xmlSchemaNewParserCtxt(lint->schema);
        if (ctxt == NULL) {
            lint->progresult = XMLLINT_ERR_MEM;
            goto error;
        }
        xmlSchemaSetResourceLoader(ctxt, xmllintResourceLoader, lint);
  lint->wxschemas = xmlSchemaParse(ctxt);
  xmlSchemaFreeParserCtxt(ctxt);
  if (lint->wxschemas == NULL) {
      fprintf(errStream, "WXS schema %s failed to compile\n",
                    lint->schema);
            lint->progresult = XMLLINT_ERR_SCHEMACOMP;
            goto error;
  }
  if (lint->appOptions & XML_LINT_TIMINGS) {
      endTimer(lint, "Compiling the schemas");
  }
    }
#endif /* LIBXML_SCHEMAS_ENABLED */

#if defined(LIBXML_READER_ENABLED) && defined(LIBXML_PATTERN_ENABLED)
    if ((lint->pattern != NULL) && ((lint->appOptions & XML_LINT_USE_WALKER) != XML_LINT_USE_WALKER)) {
        res = xmlPatternCompileSafe(BAD_CAST lint->pattern, NULL, 0, NULL,
                                    &lint->patternc);
  if (lint->patternc == NULL) {
            if (res < 0) {
                lint->progresult = XMLLINT_ERR_MEM;
            } else {
                fprintf(errStream, "Pattern %s failed to compile\n",
                        lint->pattern);
                lint->progresult = XMLLINT_ERR_SCHEMAPAT;
            }
            goto error;
  }
    }
#endif /* LIBXML_READER_ENABLED && LIBXML_PATTERN_ENABLED */

    /*
     * The main loop over input documents
     */
    for (i = 1; i < argc ; i++) {
        const char *filename = argv[i];
#if HAVE_DECL_MMAP
        int memoryFd = -1;
#endif

  if ((filename[0] == '-') && (strcmp(filename, "-") != 0)) {
            i += skipArgs(filename);
            continue;
        }

#if HAVE_DECL_MMAP
        if (lint->appOptions & XML_LINT_MEMORY) {
            struct stat info;
            if (stat(filename, &info) < 0) {
                lint->progresult = XMLLINT_ERR_RDFILE;
                break;
            }
            memoryFd = open(filename, O_RDONLY);
            if (memoryFd < 0) {
                lint->progresult = XMLLINT_ERR_RDFILE;
                break;
            }
            lint->memoryData = mmap(NULL, info.st_size, PROT_READ,
                                    MAP_SHARED, memoryFd, 0);
            if (lint->memoryData == (void *) MAP_FAILED) {
                close(memoryFd);
                fprintf(errStream, "mmap failure for file %s\n", filename);
                lint->progresult = XMLLINT_ERR_RDFILE;
                break;
            }
            lint->memorySize = info.st_size;
        }
#endif /* HAVE_DECL_MMAP */

  if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat > 1))
      startTimer(lint);

#ifdef LIBXML_READER_ENABLED
        if (lint->appOptions & XML_LINT_USE_STREAMING) {
            for (j = 0; j < lint->repeat; j++)
                streamFile(lint, filename);
        } else
#endif /* LIBXML_READER_ENABLED */
        {
            xmlParserCtxtPtr ctxt;

#ifdef LIBXML_HTML_ENABLED
            if (lint->appOptions & XML_LINT_HTML_ENABLED) {
#ifdef LIBXML_PUSH_ENABLED
                if (lint->appOptions & XML_LINT_PUSH_ENABLED) {
                    ctxt = htmlCreatePushParserCtxt(NULL, NULL, NULL, 0,
                                                    filename,
                                                    XML_CHAR_ENCODING_NONE);
                } else
#endif /* LIBXML_PUSH_ENABLED */
                {
                    ctxt = htmlNewParserCtxt();
                }
                htmlCtxtUseOptions(ctxt, lint->htmlOptions);
            } else
#endif /* LIBXML_HTML_ENABLED */
            {
#ifdef LIBXML_PUSH_ENABLED
                if (lint->appOptions & XML_LINT_PUSH_ENABLED) {
                    ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0,
                                                   filename);
                } else
#endif /* LIBXML_PUSH_ENABLED */
                {
                    ctxt = xmlNewParserCtxt();
                }
                xmlCtxtUseOptions(ctxt, lint->parseOptions);
            }
            if (ctxt == NULL) {
                lint->progresult = XMLLINT_ERR_MEM;
                goto error;
            }

            if (lint->appOptions & XML_LINT_SAX_ENABLED) {
                const xmlSAXHandler *handler;

                if (lint->noout) {
                    handler = &emptySAXHandler;
#ifdef LIBXML_SAX1_ENABLED
                } else if (lint->parseOptions & XML_PARSE_SAX1) {
                    handler = &debugSAXHandler;
#endif
                } else {
                    handler = &debugSAX2Handler;
                }

                *ctxt->sax = *handler;
                ctxt->userData = lint;
            }

            xmlCtxtSetResourceLoader(ctxt, xmllintResourceLoader, lint);
            if (lint->maxAmpl > 0)
                xmlCtxtSetMaxAmplification(ctxt, lint->maxAmpl);

            lint->ctxt = ctxt;

            for (j = 0; j < lint->repeat; j++) {
                if (j > 0) {
#ifdef LIBXML_PUSH_ENABLED
                    if (lint->appOptions & XML_LINT_PUSH_ENABLED) {
                        xmlCtxtResetPush(ctxt, NULL, 0, NULL, NULL);
                    } else
#endif
                    {
                        xmlCtxtReset(ctxt);
                    }
                }

                if (lint->appOptions & XML_LINT_SAX_ENABLED) {
                    testSAX(lint, filename);
                } else {
                    parseAndPrintFile(lint, filename);
                }
            }

            xmlFreeParserCtxt(ctxt);
        }

        if ((lint->appOptions & XML_LINT_TIMINGS) && (lint->repeat > 1)) {
            endTimer(lint, "%d iterations", lint->repeat);
        }

        files += 1;

#if HAVE_DECL_MMAP
        if (lint->appOptions & XML_LINT_MEMORY) {
            munmap(lint->memoryData, lint->memorySize);
            close(memoryFd);
        }
#endif
    }

    if (lint->appOptions & XML_LINT_GENERATE)
  parseAndPrintFile(lint, NULL);

    if ((files == 0) && ((lint->appOptions & XML_LINT_GENERATE) != XML_LINT_GENERATE) && (lint->version == 0)) {
  usage(errStream, argv[0]);
        lint->progresult = XMLLINT_ERR_UNCLASS;
    }

error:

#ifdef LIBXML_SCHEMATRON_ENABLED
    if (lint->wxschematron != NULL)
  xmlSchematronFree(lint->wxschematron);
#endif
#ifdef LIBXML_RELAXNG_ENABLED
    if (lint->relaxngschemas != NULL)
  xmlRelaxNGFree(lint->relaxngschemas);
#endif
#ifdef LIBXML_SCHEMAS_ENABLED
    if (lint->wxschemas != NULL)
  xmlSchemaFree(lint->wxschemas);
#endif
#if defined(LIBXML_READER_ENABLED) && defined(LIBXML_PATTERN_ENABLED)
    if (lint->patternc != NULL)
        xmlFreePattern(lint->patternc);
#endif

    xmlCleanupParser();

    if ((lint->maxmem) && (xmllintMaxmemReached)) {
        fprintf(errStream, "Maximum memory exceeded (%d bytes)\n",
                xmllintMaxmem);
    } else if (lint->progresult == XMLLINT_ERR_MEM) {
        fprintf(errStream, "Out-of-memory error reported\n");
    }

#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
    if ((lint->maxmem) &&
        (xmllintOom != (lint->progresult == XMLLINT_ERR_MEM))) {
        fprintf(stderr, "xmllint: malloc failure %s reported\n",
                xmllintOom ? "not" : "erroneously");
        abort();
    }
#endif

    return(lint->progresult);
}


Coverage Report

Created: 2025-07-18 06:55