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bug 184086, number conversion in XSLT is LOCALE independent, r=sicking, sr=jag

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This commit is contained in:
axel%pike.org 2003-01-11 19:19:14 +00:00
parent 386ed86fe5
commit 48ea3e8259
1 changed files with 108 additions and 55 deletions
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163
extensions/transformiix/source/base/Double.cpp
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@ -41,13 +41,8 @@
#ifdef WIN32
#include <float.h>
#endif
//A trick to handle IEEE floating point exceptions on FreeBSD - E.D.
#ifdef __FreeBSD__
#include <ieeefp.h>
#endif
#ifndef TX_EXE
#include "prdtoa.h"
#else
#ifdef TX_EXE
#include <stdio.h>
#endif
@ -57,6 +52,7 @@
//A trick to handle IEEE floating point exceptions on FreeBSD - E.D.
#ifdef __FreeBSD__
#include <ieeefp.h>
#ifdef __alpha__
fp_except_t allmask = FP_X_INV|FP_X_OFL|FP_X_UFL|FP_X_DZ|FP_X_IMP;
#else
@ -129,57 +125,114 @@ MBool Double::isNeg(double aDbl)
* Converts the given String to a double, if the String value does not
* represent a double, NaN will be returned
*/
class txStringToDouble
{
public:
typedef PRUnichar input_type;
typedef PRUnichar value_type;
txStringToDouble(): mState(eWhitestart), mSign(ePositive) {}
PRUint32
write(const input_type* aSource, PRUint32 aSourceLength)
{
if (mState == eIllegal) {
return aSourceLength;
}
PRUint32 i = 0;
PRUnichar c;
for ( ; i < aSourceLength; ++i) {
c = aSource[i];
switch (mState) {
case eWhitestart:
if (c == '-') {
mState = eDecimal;
mSign = eNegative;
}
else if (c >= '0' && c <= '9') {
mState = eDecimal;
mBuffer.Append((char)c);
}
else if (c == '.') {
mState = eMantissa;
mBuffer.Append((char)c);
}
else if (!XMLUtils::isWhitespace(c)) {
mState = eIllegal;
return aSourceLength;
}
break;
case eDecimal:
if (c >= '0' && c <= '9') {
mBuffer.Append((char)c);
}
else if (c == '.') {
mState = eMantissa;
mBuffer.Append((char)c);
}
else if (XMLUtils::isWhitespace(c)) {
mState = eWhiteend;
}
else {
mState = eIllegal;
return aSourceLength;
}
break;
case eMantissa:
if (c >= '0' && c <= '9') {
mBuffer.Append((char)c);
}
else if (XMLUtils::isWhitespace(c)) {
mState = eWhiteend;
}
else {
mState = eIllegal;
return aSourceLength;
}
break;
case eWhiteend:
if (!XMLUtils::isWhitespace(c)) {
mState = eIllegal;
return aSourceLength;
}
break;
default:
break;
}
}
return aSourceLength;
}
double
getDouble()
{
if (mState == eIllegal || mBuffer.IsEmpty() ||
(mBuffer.Length() == 1 && mBuffer[0] == '.')) {
return Double::NaN;
}
return mSign*PR_strtod(mBuffer.get(), 0);
}
private:
nsCAutoString mBuffer;
enum {
eWhitestart,
eDecimal,
eMantissa,
eWhiteend,
eIllegal
} mState;
enum {
eNegative = -1,
ePositive = 1
} mSign;
};
double Double::toDouble(const String& aSrc)
{
PRUint32 idx = 0;
PRUint32 len = aSrc.Length();
MBool digitFound = MB_FALSE;
// leading whitespace
while (idx < len &&
XMLUtils::isWhitespace(aSrc.CharAt(idx))) {
++idx;
}
// sign char
if (idx < len && aSrc.CharAt(idx) == '-')
++idx;
// integer chars
while (idx < len &&
aSrc.CharAt(idx) >= '0' &&
aSrc.CharAt(idx) <= '9') {
++idx;
digitFound = MB_TRUE;
}
// decimal separator
if (idx < len && aSrc.CharAt(idx) == '.') {
++idx;
// fraction chars
while (idx < len &&
aSrc.CharAt(idx) >= '0' &&
aSrc.CharAt(idx) <= '9') {
++idx;
digitFound = MB_TRUE;
}
}
// ending whitespace
while (idx < len &&
XMLUtils::isWhitespace(aSrc.CharAt(idx))) {
++idx;
}
// "."==NaN, ".0"=="0."==0
if (digitFound && idx == len) {
NS_LossyConvertUCS2toASCII buf(aSrc);
double res = buf.get() ? atof(buf.get()) : Double::NaN;
return res;
}
return Double::NaN;
txStringToDouble sink;
nsAString::const_iterator fromBegin, fromEnd;
const nsAString& str = aSrc.getConstNSString();
copy_string(str.BeginReading(fromBegin), str.EndReading(fromEnd), sink);
return sink.getDouble();
}
/*