ExternalId.cxx revision 7c478bd95313f5f23a4c958a745db2134aa03244
// Copyright (c) 1994 James Clark
// See the file COPYING for copying permission.
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __GNUG__
#pragma implementation
#endif
#include "splib.h"
#include "ExternalId.h"
#include "CharsetInfo.h"
#include "macros.h"
#include "ParserMessages.h"
#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif
ExternalId::ExternalId()
: haveSystem_(0), havePublic_(0)
{
}
void ExternalId::setSystem(Text &text)
{
text.swap(system_);
haveSystem_ = 1;
}
Boolean ExternalId::setPublic(Text &text, const CharsetInfo &charset,
Char space, const MessageType1 *&error)
{
havePublic_ = 1;
return public_.init(text, charset, space, error);
}
void ExternalId::setLocation(const Location &loc)
{
loc_ = loc;
}
PublicId::PublicId()
: formal_(0)
{
}
Boolean PublicId::init(Text &text, const CharsetInfo &charset,
Char space, const MessageType1 *&error)
{
text.swap(text_);
const StringC &str = text_.string();
formal_ = 0;
const Char *next = str.data();
const Char *lim = str.data() + str.size();
Char solidus = charset.execToDesc('/');
Char minus = charset.execToDesc('-');
Char plus = charset.execToDesc('+');
const Char *fieldStart;
size_t fieldLength;
if (!nextField(solidus, next, lim, fieldStart, fieldLength)) {
error = &ParserMessages::fpiMissingField;
return 0;
}
if (fieldLength == 1 && (*fieldStart == minus || *fieldStart == plus)) {
ownerType_ = (*fieldStart == plus ? registered : unregistered);
if (!nextField(solidus, next, lim, fieldStart, fieldLength)) {
error = &ParserMessages::fpiMissingField;
return 0;
}
}
else
ownerType_ = ISO;
owner_.assign(fieldStart, fieldLength);
if (!nextField(solidus, next, lim, fieldStart, fieldLength)) {
error = &ParserMessages::fpiMissingField;
return 0;
}
size_t i;
for (i = 0; i < fieldLength; i++)
if (fieldStart[i] == space)
break;
if (i >= fieldLength) {
error = &ParserMessages::fpiMissingTextClassSpace;
return 0;
}
StringC textClassString(fieldStart, i);
if (!lookupTextClass(textClassString, charset, textClass_)) {
error = &ParserMessages::fpiInvalidTextClass;
return 0;
}
i++; // skip the space
fieldStart += i;
fieldLength -= i;
if (fieldLength == 1 && *fieldStart == minus) {
unavailable_ = 1;
if (!nextField(solidus, next, lim, fieldStart, fieldLength)) {
error = &ParserMessages::fpiMissingField;
return 0;
}
}
else
unavailable_ = 0;
description_.assign(fieldStart, fieldLength);
if (!nextField(solidus, next, lim, fieldStart, fieldLength)) {
error = &ParserMessages::fpiMissingField;
return 0;
}
if (textClass_ != CHARSET) {
for (i = 0; i < fieldLength; i++) {
UnivChar c;
if (!charset.descToUniv(fieldStart[i], c)
|| c < UnivCharsetDesc::A || c >= UnivCharsetDesc::A + 26) {
error = &ParserMessages::fpiInvalidLanguage;
return 0;
}
}
// The public text language must be a name.
// Names cannot be empty.
if (fieldLength == 0) {
error = &ParserMessages::fpiInvalidLanguage;
return 0;
}
}
languageOrDesignatingSequence_.assign(fieldStart, fieldLength);
if (nextField(solidus, next, lim, fieldStart, fieldLength)) {
switch (textClass_) {
case CAPACITY:
case CHARSET:
case NOTATION:
case SYNTAX:
error = &ParserMessages::fpiIllegalDisplayVersion;
return 0;
default:
break;
}
haveDisplayVersion_ = 1;
displayVersion_.assign(fieldStart, fieldLength);
}
else
haveDisplayVersion_ = 0;
if (next != 0) {
error = &ParserMessages::fpiExtraField;
return 0;
}
formal_ = 1;
return 1;
}
Boolean PublicId::nextField(Char solidus,
const Char *&next,
const Char *lim,
const Char *&fieldStart,
size_t &fieldLength)
{
if (next == 0)
return 0;
fieldStart = next;
for (; next < lim; next++) {
if (next[0] == solidus && next + 1 < lim && next[1] == solidus) {
fieldLength = next - fieldStart;
next += 2;
return 1;
}
}
fieldLength = lim - fieldStart;
next = 0;
return 1;
}
const char *const PublicId::textClasses[] = {
"CAPACITY",
"CHARSET",
"DOCUMENT",
"DTD",
"ELEMENTS",
"ENTITIES",
"LPD",
"NONSGML",
"NOTATION",
"SD",
"SHORTREF",
"SUBDOC",
"SYNTAX",
"TEXT",
};
Boolean PublicId::lookupTextClass(const StringC &str,
const CharsetInfo &charset,
TextClass &textClass)
{
for (size_t i = 0; i < SIZEOF(textClasses); i++)
if (str == charset.execToDesc(textClasses[i])) {
textClass = TextClass(i);
return 1;
}
return 0;
}
Boolean PublicId::getOwnerType(OwnerType &result) const
{
if (!formal_)
return 0;
result = ownerType_;
return 1;
}
Boolean PublicId::getOwner(StringC &result) const
{
if (!formal_)
return 0;
result = owner_;
return 1;
}
Boolean PublicId::getTextClass(TextClass &result) const
{
if (!formal_)
return 0;
result = textClass_;
return 1;
}
Boolean PublicId::getUnavailable(Boolean &result) const
{
if (!formal_)
return 0;
result = unavailable_;
return 1;
}
Boolean PublicId::getDescription(StringC &result) const
{
if (!formal_)
return 0;
result = description_;
return 1;
}
Boolean PublicId::getLanguage(StringC &result) const
{
if (!formal_ || textClass_ == CHARSET)
return 0;
result = languageOrDesignatingSequence_;
return 1;
}
Boolean PublicId::getDesignatingSequence(StringC &result) const
{
if (!formal_ || textClass_ != CHARSET)
return 0;
result = languageOrDesignatingSequence_;
return 1;
}
Boolean PublicId::getDisplayVersion(StringC &result) const
{
if (!formal_)
return 0;
if (haveDisplayVersion_)
result = displayVersion_;
return 1;
}
#ifdef SP_NAMESPACE
}
#endif