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xmlIO.c
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xmlIO.c
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/*
* xmlIO.c : implementation of the I/O interfaces used by the parser
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
*
* 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char
*/
#define IN_LIBXML
#include "libxml.h"
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#ifdef HAVE_LZMA_H
#include <lzma.h>
#endif
#if defined(WIN32) || defined(_WIN32)
#include <windows.h>
#endif
#if defined(_WIN32_WCE)
#include <winnls.h> /* for CP_UTF8 */
#endif
/* Figure a portable way to know if a file is a directory. */
#ifndef HAVE_STAT
# ifdef HAVE__STAT
/* MS C library seems to define stat and _stat. The definition
is identical. Still, mapping them to each other causes a warning. */
# ifndef _MSC_VER
# define stat(x,y) _stat(x,y)
# endif
# define HAVE_STAT
# endif
#else
# ifdef HAVE__STAT
# if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__)
# define stat _stat
# endif
# endif
#endif
#ifdef HAVE_STAT
# ifndef S_ISDIR
# ifdef _S_ISDIR
# define S_ISDIR(x) _S_ISDIR(x)
# else
# ifdef S_IFDIR
# ifndef S_IFMT
# ifdef _S_IFMT
# define S_IFMT _S_IFMT
# endif
# endif
# ifdef S_IFMT
# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
# endif
# endif
# endif
# endif
#endif
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/xmlIO.h>
#include <libxml/uri.h>
#include <libxml/nanohttp.h>
#include <libxml/nanoftp.h>
#include <libxml/xmlerror.h>
#ifdef LIBXML_CATALOG_ENABLED
#include <libxml/catalog.h>
#endif
#include <libxml/globals.h>
/* #define VERBOSE_FAILURE */
/* #define DEBUG_EXTERNAL_ENTITIES */
/* #define DEBUG_INPUT */
#ifdef DEBUG_INPUT
#define MINLEN 40
#else
#define MINLEN 4000
#endif
/*
* Input I/O callback sets
*/
typedef struct _xmlInputCallback {
xmlInputMatchCallback matchcallback;
xmlInputOpenCallback opencallback;
xmlInputReadCallback readcallback;
xmlInputCloseCallback closecallback;
} xmlInputCallback;
#define MAX_INPUT_CALLBACK 15
static xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK];
static int xmlInputCallbackNr = 0;
static int xmlInputCallbackInitialized = 0;
#ifdef LIBXML_OUTPUT_ENABLED
/*
* Output I/O callback sets
*/
typedef struct _xmlOutputCallback {
xmlOutputMatchCallback matchcallback;
xmlOutputOpenCallback opencallback;
xmlOutputWriteCallback writecallback;
xmlOutputCloseCallback closecallback;
} xmlOutputCallback;
#define MAX_OUTPUT_CALLBACK 15
static xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK];
static int xmlOutputCallbackNr = 0;
static int xmlOutputCallbackInitialized = 0;
xmlOutputBufferPtr
xmlAllocOutputBufferInternal(xmlCharEncodingHandlerPtr encoder);
#endif /* LIBXML_OUTPUT_ENABLED */
/************************************************************************
* *
* Tree memory error handler *
* *
************************************************************************/
static const char *IOerr[] = {
"Unknown IO error", /* UNKNOWN */
"Permission denied", /* EACCES */
"Resource temporarily unavailable",/* EAGAIN */
"Bad file descriptor", /* EBADF */
"Bad message", /* EBADMSG */
"Resource busy", /* EBUSY */
"Operation canceled", /* ECANCELED */
"No child processes", /* ECHILD */
"Resource deadlock avoided",/* EDEADLK */
"Domain error", /* EDOM */
"File exists", /* EEXIST */
"Bad address", /* EFAULT */
"File too large", /* EFBIG */
"Operation in progress", /* EINPROGRESS */
"Interrupted function call",/* EINTR */
"Invalid argument", /* EINVAL */
"Input/output error", /* EIO */
"Is a directory", /* EISDIR */
"Too many open files", /* EMFILE */
"Too many links", /* EMLINK */
"Inappropriate message buffer length",/* EMSGSIZE */
"Filename too long", /* ENAMETOOLONG */
"Too many open files in system",/* ENFILE */
"No such device", /* ENODEV */
"No such file or directory",/* ENOENT */
"Exec format error", /* ENOEXEC */
"No locks available", /* ENOLCK */
"Not enough space", /* ENOMEM */
"No space left on device", /* ENOSPC */
"Function not implemented", /* ENOSYS */
"Not a directory", /* ENOTDIR */
"Directory not empty", /* ENOTEMPTY */
"Not supported", /* ENOTSUP */
"Inappropriate I/O control operation",/* ENOTTY */
"No such device or address",/* ENXIO */
"Operation not permitted", /* EPERM */
"Broken pipe", /* EPIPE */
"Result too large", /* ERANGE */
"Read-only file system", /* EROFS */
"Invalid seek", /* ESPIPE */
"No such process", /* ESRCH */
"Operation timed out", /* ETIMEDOUT */
"Improper link", /* EXDEV */
"Attempt to load network entity %s", /* XML_IO_NETWORK_ATTEMPT */
"encoder error", /* XML_IO_ENCODER */
"flush error",
"write error",
"no input",
"buffer full",
"loading error",
"not a socket", /* ENOTSOCK */
"already connected", /* EISCONN */
"connection refused", /* ECONNREFUSED */
"unreachable network", /* ENETUNREACH */
"adddress in use", /* EADDRINUSE */
"already in use", /* EALREADY */
"unknown address familly", /* EAFNOSUPPORT */
};
#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__)
/**
* __xmlIOWin32UTF8ToWChar:
* @u8String: uft-8 string
*
* Convert a string from utf-8 to wchar (WINDOWS ONLY!)
*/
static wchar_t *
__xmlIOWin32UTF8ToWChar(const char *u8String)
{
wchar_t *wString = NULL;
if (u8String) {
int wLen =
MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, u8String,
-1, NULL, 0);
if (wLen) {
wString = xmlMalloc(wLen * sizeof(wchar_t));
if (wString) {
if (MultiByteToWideChar
(CP_UTF8, 0, u8String, -1, wString, wLen) == 0) {
xmlFree(wString);
wString = NULL;
}
}
}
}
return wString;
}
#endif
/**
* xmlIOErrMemory:
* @extra: extra informations
*
* Handle an out of memory condition
*/
static void
xmlIOErrMemory(const char *extra)
{
__xmlSimpleError(XML_FROM_IO, XML_ERR_NO_MEMORY, NULL, NULL, extra);
}
/**
* __xmlIOErr:
* @code: the error number
* @
* @extra: extra informations
*
* Handle an I/O error
*/
void
__xmlIOErr(int domain, int code, const char *extra)
{
unsigned int idx;
if (code == 0) {
#ifdef HAVE_ERRNO_H
if (errno == 0) code = 0;
#ifdef EACCES
else if (errno == EACCES) code = XML_IO_EACCES;
#endif
#ifdef EAGAIN
else if (errno == EAGAIN) code = XML_IO_EAGAIN;
#endif
#ifdef EBADF
else if (errno == EBADF) code = XML_IO_EBADF;
#endif
#ifdef EBADMSG
else if (errno == EBADMSG) code = XML_IO_EBADMSG;
#endif
#ifdef EBUSY
else if (errno == EBUSY) code = XML_IO_EBUSY;
#endif
#ifdef ECANCELED
else if (errno == ECANCELED) code = XML_IO_ECANCELED;
#endif
#ifdef ECHILD
else if (errno == ECHILD) code = XML_IO_ECHILD;
#endif
#ifdef EDEADLK
else if (errno == EDEADLK) code = XML_IO_EDEADLK;
#endif
#ifdef EDOM
else if (errno == EDOM) code = XML_IO_EDOM;
#endif
#ifdef EEXIST
else if (errno == EEXIST) code = XML_IO_EEXIST;
#endif
#ifdef EFAULT
else if (errno == EFAULT) code = XML_IO_EFAULT;
#endif
#ifdef EFBIG
else if (errno == EFBIG) code = XML_IO_EFBIG;
#endif
#ifdef EINPROGRESS
else if (errno == EINPROGRESS) code = XML_IO_EINPROGRESS;
#endif
#ifdef EINTR
else if (errno == EINTR) code = XML_IO_EINTR;
#endif
#ifdef EINVAL
else if (errno == EINVAL) code = XML_IO_EINVAL;
#endif
#ifdef EIO
else if (errno == EIO) code = XML_IO_EIO;
#endif
#ifdef EISDIR
else if (errno == EISDIR) code = XML_IO_EISDIR;
#endif
#ifdef EMFILE
else if (errno == EMFILE) code = XML_IO_EMFILE;
#endif
#ifdef EMLINK
else if (errno == EMLINK) code = XML_IO_EMLINK;
#endif
#ifdef EMSGSIZE
else if (errno == EMSGSIZE) code = XML_IO_EMSGSIZE;
#endif
#ifdef ENAMETOOLONG
else if (errno == ENAMETOOLONG) code = XML_IO_ENAMETOOLONG;
#endif
#ifdef ENFILE
else if (errno == ENFILE) code = XML_IO_ENFILE;
#endif
#ifdef ENODEV
else if (errno == ENODEV) code = XML_IO_ENODEV;
#endif
#ifdef ENOENT
else if (errno == ENOENT) code = XML_IO_ENOENT;
#endif
#ifdef ENOEXEC
else if (errno == ENOEXEC) code = XML_IO_ENOEXEC;
#endif
#ifdef ENOLCK
else if (errno == ENOLCK) code = XML_IO_ENOLCK;
#endif
#ifdef ENOMEM
else if (errno == ENOMEM) code = XML_IO_ENOMEM;
#endif
#ifdef ENOSPC
else if (errno == ENOSPC) code = XML_IO_ENOSPC;
#endif
#ifdef ENOSYS
else if (errno == ENOSYS) code = XML_IO_ENOSYS;
#endif
#ifdef ENOTDIR
else if (errno == ENOTDIR) code = XML_IO_ENOTDIR;
#endif
#ifdef ENOTEMPTY
else if (errno == ENOTEMPTY) code = XML_IO_ENOTEMPTY;
#endif
#ifdef ENOTSUP
else if (errno == ENOTSUP) code = XML_IO_ENOTSUP;
#endif
#ifdef ENOTTY
else if (errno == ENOTTY) code = XML_IO_ENOTTY;
#endif
#ifdef ENXIO
else if (errno == ENXIO) code = XML_IO_ENXIO;
#endif
#ifdef EPERM
else if (errno == EPERM) code = XML_IO_EPERM;
#endif
#ifdef EPIPE
else if (errno == EPIPE) code = XML_IO_EPIPE;
#endif
#ifdef ERANGE
else if (errno == ERANGE) code = XML_IO_ERANGE;
#endif
#ifdef EROFS
else if (errno == EROFS) code = XML_IO_EROFS;
#endif
#ifdef ESPIPE
else if (errno == ESPIPE) code = XML_IO_ESPIPE;
#endif
#ifdef ESRCH
else if (errno == ESRCH) code = XML_IO_ESRCH;
#endif
#ifdef ETIMEDOUT
else if (errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT;
#endif
#ifdef EXDEV
else if (errno == EXDEV) code = XML_IO_EXDEV;
#endif
#ifdef ENOTSOCK
else if (errno == ENOTSOCK) code = XML_IO_ENOTSOCK;
#endif
#ifdef EISCONN
else if (errno == EISCONN) code = XML_IO_EISCONN;
#endif
#ifdef ECONNREFUSED
else if (errno == ECONNREFUSED) code = XML_IO_ECONNREFUSED;
#endif
#ifdef ETIMEDOUT
else if (errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT;
#endif
#ifdef ENETUNREACH
else if (errno == ENETUNREACH) code = XML_IO_ENETUNREACH;
#endif
#ifdef EADDRINUSE
else if (errno == EADDRINUSE) code = XML_IO_EADDRINUSE;
#endif
#ifdef EINPROGRESS
else if (errno == EINPROGRESS) code = XML_IO_EINPROGRESS;
#endif
#ifdef EALREADY
else if (errno == EALREADY) code = XML_IO_EALREADY;
#endif
#ifdef EAFNOSUPPORT
else if (errno == EAFNOSUPPORT) code = XML_IO_EAFNOSUPPORT;
#endif
else code = XML_IO_UNKNOWN;
#endif /* HAVE_ERRNO_H */
}
idx = 0;
if (code >= XML_IO_UNKNOWN) idx = code - XML_IO_UNKNOWN;
if (idx >= (sizeof(IOerr) / sizeof(IOerr[0]))) idx = 0;
__xmlSimpleError(domain, code, NULL, IOerr[idx], extra);
}
/**
* xmlIOErr:
* @code: the error number
* @extra: extra informations
*
* Handle an I/O error
*/
static void
xmlIOErr(int code, const char *extra)
{
__xmlIOErr(XML_FROM_IO, code, extra);
}
/**
* __xmlLoaderErr:
* @ctx: the parser context
* @extra: extra informations
*
* Handle a resource access error
*/
void
__xmlLoaderErr(void *ctx, const char *msg, const char *filename)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlStructuredErrorFunc schannel = NULL;
xmlGenericErrorFunc channel = NULL;
void *data = NULL;
xmlErrorLevel level = XML_ERR_ERROR;
if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
(ctxt->instate == XML_PARSER_EOF))
return;
if ((ctxt != NULL) && (ctxt->sax != NULL)) {
if (ctxt->validate) {
channel = ctxt->sax->error;
level = XML_ERR_ERROR;
} else {
channel = ctxt->sax->warning;
level = XML_ERR_WARNING;
}
if (ctxt->sax->initialized == XML_SAX2_MAGIC)
schannel = ctxt->sax->serror;
data = ctxt->userData;
}
__xmlRaiseError(schannel, channel, data, ctxt, NULL, XML_FROM_IO,
XML_IO_LOAD_ERROR, level, NULL, 0,
filename, NULL, NULL, 0, 0,
msg, filename);
}
/************************************************************************
* *
* Tree memory error handler *
* *
************************************************************************/
/**
* xmlNormalizeWindowsPath:
* @path: the input file path
*
* This function is obsolete. Please see xmlURIFromPath in uri.c for
* a better solution.
*
* Returns a canonicalized version of the path
*/
xmlChar *
xmlNormalizeWindowsPath(const xmlChar *path)
{
return xmlCanonicPath(path);
}
/**
* xmlCleanupInputCallbacks:
*
* clears the entire input callback table. this includes the
* compiled-in I/O.
*/
void
xmlCleanupInputCallbacks(void)
{
int i;
if (!xmlInputCallbackInitialized)
return;
for (i = xmlInputCallbackNr - 1; i >= 0; i--) {
xmlInputCallbackTable[i].matchcallback = NULL;
xmlInputCallbackTable[i].opencallback = NULL;
xmlInputCallbackTable[i].readcallback = NULL;
xmlInputCallbackTable[i].closecallback = NULL;
}
xmlInputCallbackNr = 0;
xmlInputCallbackInitialized = 0;
}
/**
* xmlPopInputCallbacks:
*
* Clear the top input callback from the input stack. this includes the
* compiled-in I/O.
*
* Returns the number of input callback registered or -1 in case of error.
*/
int
xmlPopInputCallbacks(void)
{
if (!xmlInputCallbackInitialized)
return(-1);
if (xmlInputCallbackNr <= 0)
return(-1);
xmlInputCallbackNr--;
xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = NULL;
xmlInputCallbackTable[xmlInputCallbackNr].opencallback = NULL;
xmlInputCallbackTable[xmlInputCallbackNr].readcallback = NULL;
xmlInputCallbackTable[xmlInputCallbackNr].closecallback = NULL;
return(xmlInputCallbackNr);
}
#ifdef LIBXML_OUTPUT_ENABLED
/**
* xmlCleanupOutputCallbacks:
*
* clears the entire output callback table. this includes the
* compiled-in I/O callbacks.
*/
void
xmlCleanupOutputCallbacks(void)
{
int i;
if (!xmlOutputCallbackInitialized)
return;
for (i = xmlOutputCallbackNr - 1; i >= 0; i--) {
xmlOutputCallbackTable[i].matchcallback = NULL;
xmlOutputCallbackTable[i].opencallback = NULL;
xmlOutputCallbackTable[i].writecallback = NULL;
xmlOutputCallbackTable[i].closecallback = NULL;
}
xmlOutputCallbackNr = 0;
xmlOutputCallbackInitialized = 0;
}
#endif /* LIBXML_OUTPUT_ENABLED */
/************************************************************************
* *
* Standard I/O for file accesses *
* *
************************************************************************/
#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__)
/**
* xmlWrapOpenUtf8:
* @path: the path in utf-8 encoding
* @mode: type of access (0 - read, 1 - write)
*
* function opens the file specified by @path
*
*/
static FILE*
xmlWrapOpenUtf8(const char *path,int mode)
{
FILE *fd = NULL;
wchar_t *wPath;
wPath = __xmlIOWin32UTF8ToWChar(path);
if(wPath)
{
fd = _wfopen(wPath, mode ? L"wb" : L"rb");
xmlFree(wPath);
}
/* maybe path in native encoding */
if(fd == NULL)
fd = fopen(path, mode ? "wb" : "rb");
return fd;
}
#ifdef HAVE_ZLIB_H
static gzFile
xmlWrapGzOpenUtf8(const char *path, const char *mode)
{
gzFile fd;
wchar_t *wPath;
fd = gzopen (path, mode);
if (fd)
return fd;
wPath = __xmlIOWin32UTF8ToWChar(path);
if(wPath)
{
int d, m = (strstr(mode, "r") ? O_RDONLY : O_RDWR);
#ifdef _O_BINARY
m |= (strstr(mode, "b") ? _O_BINARY : 0);
#endif
d = _wopen(wPath, m);
if (d >= 0)
fd = gzdopen(d, mode);
xmlFree(wPath);
}
return fd;
}
#endif
/**
* xmlWrapStatUtf8:
* @path: the path in utf-8 encoding
* @info: structure that stores results
*
* function obtains information about the file or directory
*
*/
static int
xmlWrapStatUtf8(const char *path,struct stat *info)
{
#ifdef HAVE_STAT
int retval = -1;
wchar_t *wPath;
wPath = __xmlIOWin32UTF8ToWChar(path);
if (wPath)
{
retval = _wstat(wPath,info);
xmlFree(wPath);
}
/* maybe path in native encoding */
if(retval < 0)
retval = stat(path,info);
return retval;
#else
return -1;
#endif
}
/**
* xmlWrapOpenNative:
* @path: the path
* @mode: type of access (0 - read, 1 - write)
*
* function opens the file specified by @path
*
*/
static FILE*
xmlWrapOpenNative(const char *path,int mode)
{
return fopen(path,mode ? "wb" : "rb");
}
/**
* xmlWrapStatNative:
* @path: the path
* @info: structure that stores results
*
* function obtains information about the file or directory
*
*/
static int
xmlWrapStatNative(const char *path,struct stat *info)
{
#ifdef HAVE_STAT
return stat(path,info);
#else
return -1;
#endif
}
typedef int (* xmlWrapStatFunc) (const char *f, struct stat *s);
static xmlWrapStatFunc xmlWrapStat = xmlWrapStatNative;
typedef FILE* (* xmlWrapOpenFunc)(const char *f,int mode);
static xmlWrapOpenFunc xmlWrapOpen = xmlWrapOpenNative;
#ifdef HAVE_ZLIB_H
typedef gzFile (* xmlWrapGzOpenFunc) (const char *f, const char *mode);
static xmlWrapGzOpenFunc xmlWrapGzOpen = gzopen;
#endif
/**
* xmlInitPlatformSpecificIo:
*
* Initialize platform specific features.
*/
static void
xmlInitPlatformSpecificIo(void)
{
static int xmlPlatformIoInitialized = 0;
OSVERSIONINFO osvi;
if(xmlPlatformIoInitialized)
return;
osvi.dwOSVersionInfoSize = sizeof(osvi);
if(GetVersionEx(&osvi) && (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)) {
xmlWrapStat = xmlWrapStatUtf8;
xmlWrapOpen = xmlWrapOpenUtf8;
#ifdef HAVE_ZLIB_H
xmlWrapGzOpen = xmlWrapGzOpenUtf8;
#endif
} else {
xmlWrapStat = xmlWrapStatNative;
xmlWrapOpen = xmlWrapOpenNative;
#ifdef HAVE_ZLIB_H
xmlWrapGzOpen = gzopen;
#endif
}
xmlPlatformIoInitialized = 1;
return;
}
#endif
/**
* xmlCheckFilename:
* @path: the path to check
*
* function checks to see if @path is a valid source
* (file, socket...) for XML.
*
* if stat is not available on the target machine,
* returns 1. if stat fails, returns 0 (if calling
* stat on the filename fails, it can't be right).
* if stat succeeds and the file is a directory,
* returns 2. otherwise returns 1.
*/
int
xmlCheckFilename (const char *path)
{
#ifdef HAVE_STAT
struct stat stat_buffer;
#endif
if (path == NULL)
return(0);
#ifdef HAVE_STAT
#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__)
if (xmlWrapStat(path, &stat_buffer) == -1)
return 0;
#else
if (stat(path, &stat_buffer) == -1)
return 0;
#endif
#ifdef S_ISDIR
if (S_ISDIR(stat_buffer.st_mode))
return 2;
#endif
#endif /* HAVE_STAT */
return 1;
}
static int
xmlNop(void) {
return(0);
}
/**
* xmlFdRead:
* @context: the I/O context
* @buffer: where to drop data
* @len: number of bytes to read
*
* Read @len bytes to @buffer from the I/O channel.
*
* Returns the number of bytes written
*/
static int
xmlFdRead (void * context, char * buffer, int len) {
int ret;
ret = read((int) (long) context, &buffer[0], len);
if (ret < 0) xmlIOErr(0, "read()");
return(ret);
}
#ifdef LIBXML_OUTPUT_ENABLED
/**
* xmlFdWrite:
* @context: the I/O context
* @buffer: where to get data
* @len: number of bytes to write
*
* Write @len bytes from @buffer to the I/O channel.
*
* Returns the number of bytes written
*/
static int
xmlFdWrite (void * context, const char * buffer, int len) {
int ret = 0;
if (len > 0) {
ret = write((int) (long) context, &buffer[0], len);
if (ret < 0) xmlIOErr(0, "write()");
}
return(ret);
}
#endif /* LIBXML_OUTPUT_ENABLED */
/**
* xmlFdClose:
* @context: the I/O context
*
* Close an I/O channel
*
* Returns 0 in case of success and error code otherwise
*/
static int
xmlFdClose (void * context) {
int ret;
ret = close((int) (long) context);
if (ret < 0) xmlIOErr(0, "close()");
return(ret);
}
/**
* xmlFileMatch:
* @filename: the URI for matching
*
* input from FILE *
*
* Returns 1 if matches, 0 otherwise
*/
int
xmlFileMatch (const char *filename ATTRIBUTE_UNUSED) {
return(1);
}
/**
* xmlFileOpen_real:
* @filename: the URI for matching
*
* input from FILE *, supports compressed input
* if @filename is " " then the standard input is used
*
* Returns an I/O context or NULL in case of error
*/
static void *
xmlFileOpen_real (const char *filename) {
const char *path = NULL;
FILE *fd;
if (filename == NULL)
return(NULL);
if (!strcmp(filename, "-")) {
fd = stdin;
return((void *) fd);
}
if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) {
#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__)
path = &filename[17];
#else
path = &filename[16];
#endif
} else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) {
#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__)
path = &filename[8];
#else
path = &filename[7];
#endif
} else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:/", 6)) {
/* lots of generators seems to lazy to read RFC 1738 */
#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__)
path = &filename[6];
#else
path = &filename[5];
#endif
} else
path = filename;
if (path == NULL)
return(NULL);
if (!xmlCheckFilename(path))
return(NULL);
#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__)
fd = xmlWrapOpen(path, 0);
#else
fd = fopen(path, "r");
#endif /* WIN32 */
if (fd == NULL) xmlIOErr(0, path);
return((void *) fd);
}
/**
* xmlFileOpen:
* @filename: the URI for matching
*
* Wrapper around xmlFileOpen_real that try it with an unescaped
* version of @filename, if this fails fallback to @filename
*
* Returns a handler or NULL in case or failure
*/
void *
xmlFileOpen (const char *filename) {
char *unescaped;
void *retval;
retval = xmlFileOpen_real(filename);
if (retval == NULL) {
unescaped = xmlURIUnescapeString(filename, 0, NULL);
if (unescaped != NULL) {
retval = xmlFileOpen_real(unescaped);
xmlFree(unescaped);
}
}
return retval;
}
#ifdef LIBXML_OUTPUT_ENABLED
/**
* xmlFileOpenW:
* @filename: the URI for matching
*
* output to from FILE *,
* if @filename is "-" then the standard output is used
*
* Returns an I/O context or NULL in case of error
*/
static void *
xmlFileOpenW (const char *filename) {
const char *path = NULL;
FILE *fd;
if (!strcmp(filename, "-")) {
fd = stdout;
return((void *) fd);
}
if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17))
#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__)
path = &filename[17];
#else
path = &filename[16];
#endif
else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) {
#if defined (_WIN32) || defined (__DJGPP__) && !defined(__CYGWIN__)
path = &filename[8];
#else
path = &filename[7];
#endif
} else
path = filename;
if (path == NULL)
return(NULL);
#if defined(_WIN32) || defined (__DJGPP__) && !defined (__CYGWIN__)
fd = xmlWrapOpen(path, 1);
#else
fd = fopen(path, "wb");
#endif /* WIN32 */
if (fd == NULL) xmlIOErr(0, path);
return((void *) fd);
}
#endif /* LIBXML_OUTPUT_ENABLED */