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/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
See the file COPYING for copying permission.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <fcntl.h>
#ifdef COMPILED_FROM_DSP
#include "winconfig.h"
#else
#include "expat_config.h"
#endif
#include "expat.h"
#include "xmlfile.h"
#include "xmltchar.h"
#include "filemap.h"
#ifdef _MSC_VER
#include <io.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef O_BINARY
#ifdef _O_BINARY
#define O_BINARY _O_BINARY
#else
#define O_BINARY 0
#endif
#endif
#ifdef _DEBUG
#define READ_SIZE 16
#else
#define READ_SIZE (1024*8)
#endif
typedef struct {
XML_Parser parser;
int *retPtr;
} PROCESS_ARGS;
static void
reportError(XML_Parser parser, const XML_Char *filename)
{
int code = XML_GetErrorCode(parser);
const XML_Char *message = XML_ErrorString(code);
if (message)
ftprintf(stdout, T("%s:%d:%d: %s\n"),
filename,
XML_GetErrorLineNumber(parser),
XML_GetErrorColumnNumber(parser),
message);
else
ftprintf(stderr, T("%s: (unknown message %d)\n"), filename, code);
}
static void
processFile(const void *data, size_t size,
const XML_Char *filename, void *args)
{
XML_Parser parser = ((PROCESS_ARGS *)args)->parser;
int *retPtr = ((PROCESS_ARGS *)args)->retPtr;
if (XML_Parse(parser, data, size, 1) == XML_STATUS_ERROR) {
reportError(parser, filename);
*retPtr = 0;
}
else
*retPtr = 1;
}
#ifdef WIN32
static int
isAsciiLetter(XML_Char c)
{
return (T('a') <= c && c <= T('z')) || (T('A') <= c && c <= T('Z'));
}
#endif /* WIN32 */
static const XML_Char *
resolveSystemId(const XML_Char *base, const XML_Char *systemId,
XML_Char **toFree)
{
XML_Char *s;
*toFree = 0;
if (!base
|| *systemId == T('/')
#ifdef WIN32
|| *systemId == T('\\')
|| (isAsciiLetter(systemId[0]) && systemId[1] == T(':'))
#endif
)
return systemId;
*toFree = (XML_Char *)malloc((tcslen(base) + tcslen(systemId) + 2)
* sizeof(XML_Char));
if (!*toFree)
return systemId;
tcscpy(*toFree, base);
s = *toFree;
if (tcsrchr(s, T('/')))
s = tcsrchr(s, T('/')) + 1;
#ifdef WIN32
if (tcsrchr(s, T('\\')))
s = tcsrchr(s, T('\\')) + 1;
#endif
tcscpy(s, systemId);
return *toFree;
}
static int
externalEntityRefFilemap(XML_Parser parser,
const XML_Char *context,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId)
{
int result;
XML_Char *s;
const XML_Char *filename;
XML_Parser entParser = XML_ExternalEntityParserCreate(parser, context, 0);
PROCESS_ARGS args;
args.retPtr = &result;
args.parser = entParser;
filename = resolveSystemId(base, systemId, &s);
XML_SetBase(entParser, filename);
if (!filemap(filename, processFile, &args))
result = 0;
free(s);
XML_ParserFree(entParser);
return result;
}
static int
processStream(const XML_Char *filename, XML_Parser parser)
{
/* passing NULL for filename means read intput from stdin */
int fd = 0; /* 0 is the fileno for stdin */
if (filename != NULL) {
fd = topen(filename, O_BINARY|O_RDONLY);
if (fd < 0) {
tperror(filename);
return 0;
}
}
for (;;) {
int nread;
char *buf = XML_GetBuffer(parser, READ_SIZE);
if (!buf) {
if (filename != NULL)
close(fd);
ftprintf(stderr, T("%s: out of memory\n"),
filename != NULL ? filename : "xmlwf");
return 0;
}
nread = read(fd, buf, READ_SIZE);
if (nread < 0) {
tperror(filename != NULL ? filename : "STDIN");
if (filename != NULL)
close(fd);
return 0;
}
if (XML_ParseBuffer(parser, nread, nread == 0) == XML_STATUS_ERROR) {
reportError(parser, filename != NULL ? filename : "STDIN");
if (filename != NULL)
close(fd);
return 0;
}
if (nread == 0) {
if (filename != NULL)
close(fd);
break;;
}
}
return 1;
}
static int
externalEntityRefStream(XML_Parser parser,
const XML_Char *context,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId)
{
XML_Char *s;
const XML_Char *filename;
int ret;
XML_Parser entParser = XML_ExternalEntityParserCreate(parser, context, 0);
filename = resolveSystemId(base, systemId, &s);
XML_SetBase(entParser, filename);
ret = processStream(filename, entParser);
free(s);
XML_ParserFree(entParser);
return ret;
}
int
XML_ProcessFile(XML_Parser parser,
const XML_Char *filename,
unsigned flags)
{
int result;
if (!XML_SetBase(parser, filename)) {
ftprintf(stderr, T("%s: out of memory"), filename);
exit(1);
}
if (flags & XML_EXTERNAL_ENTITIES)
XML_SetExternalEntityRefHandler(parser,
(flags & XML_MAP_FILE)
? externalEntityRefFilemap
: externalEntityRefStream);
if (flags & XML_MAP_FILE) {
PROCESS_ARGS args;
args.retPtr = &result;
args.parser = parser;
if (!filemap(filename, processFile, &args))
result = 0;
}
else
result = processStream(filename, parser);
return result;
}
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