ultimatepp/uppsrc/Core/Convert.cpp
cxl 60add2c64d Core: Atof (comma safe atof)
git-svn-id: svn://ultimatepp.org/upp/trunk@10764 f0d560ea-af0d-0410-9eb7-867de7ffcac7
2017-01-26 08:24:21 +00:00

613 lines
13 KiB
C++

#include "Core.h"
namespace Upp {
unsigned stou(const char *s, void *endptr, unsigned base)
{
ASSERT(base >= 2 && base <= 36);
unsigned digit = ctoi(*s);
if(digit >= base)
{ // error
if(endptr)
*(const char **)endptr = s;
return ~0;
}
unsigned value = digit;
while((digit = ctoi(*++s)) < base) {
unsigned v0 = value;
value = value * base + digit;
if(v0 > value) // overflow
return ~0;
}
if(endptr)
*(const char **)endptr = s;
return value;
}
unsigned stou(const wchar *s, void *endptr, unsigned base)
{
ASSERT(base >= 2 && base <= 36);
unsigned digit = ctoi(*s);
if(digit >= base)
{ // error
if(endptr)
*(const wchar **)endptr = s;
return ~0;
}
unsigned value = digit;
while((digit = ctoi(*++s)) < base) {
unsigned v0 = value;
value = value * base + digit;
if(v0 > value) // overflow
return ~0;
}
if(endptr)
*(const wchar **)endptr = s;
return value;
}
uint64 stou64(const char *s, void *endptr, unsigned base)
{
ASSERT(base >= 2 && base <= 36);
unsigned digit = ctoi(*s);
if(digit >= base)
{ // error
if(endptr)
*(const char **)endptr = s;
return ~0;
}
uint64 value = digit;
while((digit = ctoi(*++s)) < base) {
uint64 v0 = value;
value = value * base + digit;
if(v0 > value) // overflow
return ~0;
}
if(endptr)
*(const char **)endptr = s;
return value;
}
int ScanInt(const char *ptr, const char **endptr, int base)
{
const char *s = ptr;
bool minus = false;
while(*s && (byte)*s <= ' ')
s++;
if(*s == '+' || *s == '-')
minus = (*s++ == '-');
unsigned u = stou(s, endptr, base);
if(~u)
return (minus ? -(int)u : (int)u);
else
return Null;
}
int ScanInt(const wchar *ptr, const wchar **endptr, int base)
{
const wchar *s = ptr;
bool minus = false;
while(*s && *s <= ' ')
s++;
if(*s == '+' || *s == '-')
minus = (*s++ == '-');
unsigned u = stou(s, endptr, base);
if(~u)
return (minus ? -(int)u : (int)u);
else
return Null;
}
int64 ScanInt64(const char *ptr, const char **endptr, int base)
{
const char *s = ptr;
bool minus = false;
while(*s && *s <= ' ')
s++;
if(*s == '+' || *s == '-')
minus = (*s++ == '-');
uint64 u = stou64(s, endptr, base);
if(~u)
return (minus ? -(int64)u : (int64)u);
else
return Null;
}
template <class T>
double ScanDoubleT(const T *p, const T **endptr, bool accept_comma)
{
const T *begin = p;
while(*p && (byte)*p <= ' ')
p++;
bool neg = false;
if(endptr)
*endptr = p;
if(*p == '+' || *p == '-')
neg = (*p++ == '-');
if((byte)(*p - '0') >= 10 && !((*p == '.' || accept_comma && *p == ',') && (byte)(p[1] - '0') < 10)) {
if(endptr) *endptr = begin;
return Null;
}
double mantissa = 0;
T c;
int exp = 0;
while((byte)(*p - '0') < 10)
if((c = *p++) != '0') {
if(exp) { mantissa *= ipow10(exp); exp = 0; }
mantissa = 10 * mantissa + c - '0';
}
else
exp++;
int raise = exp;
if(*p == '.' || accept_comma && *p == ',') // decimal part
while((byte)((c = *++p) - '0') < 10) {
if(c != '0') {
if(raise) {
mantissa *= ipow10(raise);
exp -= raise;
raise = 0;
}
exp--;
mantissa = 10 * mantissa + c - '0';
if(!IsFin(mantissa))
return Null;
}
else
raise++;
}
if(*p == 'E' || *p == 'e') { // exponent
int vexp = ScanInt(p + 1, &p);
if(IsNull(vexp))
return Null;
exp += vexp;
}
if(endptr) *endptr = p;
if(exp) {
double e = ipow10(tabs(exp));
mantissa = (exp > 0 ? mantissa * e : mantissa / e);
}
if(!IsFin(mantissa))
return Null;
return neg ? -mantissa : mantissa;
}
double ScanDouble(const char *p, const char **endptr, bool accept_comma)
{
return ScanDoubleT(p, endptr, accept_comma);
}
double ScanDouble(const wchar *p, const wchar **endptr, bool accept_comma)
{
return ScanDoubleT(p, endptr, accept_comma);
}
double Atof(const char *s)
{
return Nvl(ScanDouble(s));
}
Value StrIntValue(const char *s)
{
if(s && *s) {
const char *p;
int64 q = ScanInt64(s, &p);
if(!IsNull(q))
while(*p) {
if((byte)*p > ' ')
return ErrorValue(t_("Invalid number !"));
p++;
}
return IsNull(q) ? ErrorValue(t_("Invalid number !")) : Value(q);
}
return (int)Null;
}
Value StrDblValue(const char *s)
{
if(s && *s) {
const char *p;
double q = ScanDouble(s, &p);
if(!IsNull(q))
while(*p) {
if((byte)*p > ' ')
return ErrorValue(t_("Invalid number !"));
p++;
}
return IsNull(q) ? ErrorValue(t_("Invalid number !")) : Value(q);
}
return (double)Null;
}
Value Scan(dword qtype, const String& text, const Value& def, bool *hastime) {
Date date;
const char *s;
if(hastime)
*hastime = false;
switch(qtype) {
case INT64_V:
case INT_V:
case BOOL_V:
return StrIntValue(text);
case DATE_V:
if(text.IsEmpty()) return (Date) Null;
s = StrToDate(date, text, (Date)def);
if(s)
for(;;) {
if(IsDigit(*s))
break;
if(*s == '\0')
return date;
s++;
}
return ErrorValue(t_("Invalid date !"));
case TIME_V: {
if(text.IsEmpty()) return (Time) Null;
s = StrToDate(date, text, (Date)def);
if(s)
try {
CParser p(s);
Time tm = ToTime(date);
Time d = (Time)def;
tm.hour = d.hour;
tm.minute = d.minute;
tm.second = d.second;
if(p.IsEof())
return tm;
if(hastime)
*hastime = true;
int q = p.ReadInt();
if(q < 0 || q > 23)
throw CParser::Error("");
tm.hour = q;
if(p.IsEof())
return tm;
p.PassChar(':');
q = p.ReadInt();
if(q < 0 || q > 59)
throw CParser::Error("");
tm.minute = q;
if(p.IsEof())
return tm;
p.PassChar(':');
q = p.ReadInt();
if(q < 0 || q > 59)
throw CParser::Error("");
tm.second = q;
if(p.IsEof())
return tm;
}
catch(CParser::Error) {}
return ErrorValue(t_("Invalid time !"));
}
case STRING_V:
case WSTRING_V:
return text;
case DOUBLE_V:
return StrDblValue(text);
default:
ASSERT(0);
break;
}
return Null;
}
Convert::Convert() {}
Convert::~Convert() {}
Value Convert::Format(const Value& q) const {
if(IsVoid(q) || q.IsNull()) return String();
switch(q.GetType()) {
case INT64_V:
return IntStr64((int64)q);
case INT_V:
case BOOL_V:
return IntStr((int)q);
case DOUBLE_V:
return DblStr((double)q);
case DATE_V:
return UPP::Format(Date(q));
case TIME_V:
return UPP::Format(Time(q));
case STRING_V:
case WSTRING_V:
return q;
}
return q.ToString();
}
Value Convert::Scan(const Value& text) const {
return text;
};
int Convert::Filter(int chr) const {
return chr;
}
const Convert& StdConvert()
{
static Convert h;
return h;
}
String StdFormat(const Value& q) {
return StdConvert().Format(q);
}
Value NotNullError() {
return ErrorValue(t_("Null value not allowed."));
}
#ifdef flagSO
ConvertInt::ConvertInt(int minval, int maxval, bool notnull)
: minval(minval), maxval(maxval), notnull(notnull) {}
ConvertInt::~ConvertInt() {}
ConvertInt64::ConvertInt64(int64 minval, int64 maxval, bool notnull) {
MinMax(minval, maxval); NotNull(notnull);
}
ConvertInt64::~ConvertInt64() {}
#endif
Value ConvertInt::Scan(const Value& text) const {
Value v = UPP::Scan(INT_V, text);
if(IsError(v)) return v;
if(IsNull(v)) return notnull ? NotNullError() : v;
int64 m = v;
if(m >= minval && m <= maxval) {
if(m >= INT_MIN && m <= INT_MAX)
return (int)m;
else
return v;
}
return ErrorValue(UPP::Format(t_("Number must be between %d and %d."), minval, maxval));
}
int ConvertInt::Filter(int chr) const {
return minval >= 0 ? CharFilterDigit(chr) : CharFilterInt(chr);
}
Value ConvertDouble::Format(const Value& q) const
{
if(IsNull(q))
return Null;
return UPP::NFormat(pattern, (double)q);
}
Value ConvertDouble::Scan(const Value& txt) const {
String text = txt;
if(pattern.GetCount() && pattern != "%.10g") { // Fix text with patterns like "%2.!n EUR" (e.g. 1.2 EUR)
text = UPP::Filter(text, CharFilterDouble);
while(ToUpper(*text.Last()) == 'E')
text.Trim(text.GetCount() - 1);
}
Value v = UPP::Scan(DOUBLE_V, text);
if(IsError(v)) return v;
if(IsNull(v)) return notnull ? NotNullError() : v;
double m = v;
if(m >= minval && m <= maxval) return v;
return ErrorValue(UPP::Format(t_("Number must be between %g and %g."), minval, maxval));
}
int ConvertDouble::Filter(int chr) const {
chr = CharFilterDouble(chr);
return comma && chr == '.' ? ',' : chr;
}
ConvertDouble::ConvertDouble(double minval, double maxval, bool notnull)
: minval(minval), maxval(maxval), notnull(notnull)
{
pattern = "%.10g";
comma = false;
}
ConvertDouble& ConvertDouble::Pattern(const char *p)
{
pattern = p;
comma = String(Format(1.1)).Find(',') >= 0;
return *this;
}
#ifdef flagSO
ConvertDouble::~ConvertDouble() {}
#endif
ConvertDate::ConvertDate(Date minval, Date maxval, bool notnull)
: minval(minval), maxval(maxval), notnull(notnull) {
defaultval = Null;
}
ConvertDate::~ConvertDate()
{
}
Value ConvertDate::Format(const Value& q) const
{
if(IsDateTime(q))
return Convert::Format((Date)q);
return Convert::Format(q);
}
Value ConvertDate::Scan(const Value& text) const {
Value v = UPP::Scan(DATE_V, text, defaultval);
if(IsError(v)) return v;
if(IsNull(v)) return notnull ? NotNullError() : v;
Date m = v;
if(m >= minval && m <= maxval) return v;
return ErrorValue(t_("Date must be between ") + UPP::Format(minval) + t_("range\v and ") + UPP::Format(maxval) + ".");
}
int ConvertDate::Filter(int chr) const {
return CharFilterDate(chr);
}
ConvertTime::ConvertTime(Time minval, Time maxval, bool notnull)
: minval(minval), maxval(maxval), notnull(notnull), seconds(true) {
defaultval = Null;
timealways = false;
dayend = false;
}
ConvertTime::~ConvertTime()
{
}
Value ConvertTime::Scan(const Value& text) const
{
bool hastime;
Value v = UPP::Scan(TIME_V, text, defaultval, &hastime);
if(IsError(v)) return v;
if(IsNull(v)) return notnull ? NotNullError() : v;
Time m = v;
if(!hastime && dayend) {
m.hour = 23;
m.minute = 59;
m.second = 59;
v = m;
}
if(m >= minval && m <= maxval) return v;
return ErrorValue(t_("Time must be between ") + UPP::Format(minval) + t_("range\v and ") + UPP::Format(maxval) + ".");
}
int ConvertTime::Filter(int chr) const
{
if(IsDigit(chr) || chr == ' ' || chr == '.' || chr == ':')
return chr;
if(chr == ',')
return '.';
return CharFilterDate(chr);
}
Value ConvertTime::Format(const Value& q) const
{
if(IsVoid(q) || q.IsNull())
return String();
else
if(q.GetType() == TIME_V || timealways)
return ToTime((Date)q) != (Time)q || timealways ? UPP::Format(Time(q), seconds) : UPP::Format(Date(q));
else
return Convert::Format(q);
}
#ifdef flagSO
ConvertString::ConvertString(int maxlen, bool notnull) : maxlen(maxlen), notnull(notnull) {
trimleft = trimright = false;
}
ConvertString::~ConvertString() {}
#endif
Value ConvertString::Scan(const Value& text) const {
if(IsError(text)) return text;
if(IsNull(text)) return notnull ? NotNullError() : Value(text);
if(text.GetType() == STRING_V && String(text).GetLength() <= maxlen ||
text.GetType() == WSTRING_V && WString(text).GetLength() <= maxlen) {
String s = text;
if(trimleft)
s = Upp::TrimLeft(s);
if(trimright)
s = Upp::TrimRight(s);
return s;
}
return ErrorValue(UPP::Format(t_("Please enter no more than %d characters."), maxlen));
}
const ConvertInt& StdConvertInt() { static ConvertInt h; return h; }
const ConvertInt& StdConvertIntNotNull() { static ConvertInt h(-INT_MAX, INT_MAX, true); return h; }
const ConvertDouble& StdConvertDouble() { static ConvertDouble h; return h; }
const ConvertDouble& StdConvertDoubleNotNull() { static ConvertDouble h(DOUBLE_NULL_LIM, -DOUBLE_NULL_LIM, true); return h; }
const ConvertDate& StdConvertDate() { static ConvertDate h; return h; }
const ConvertDate& StdConvertDateNotNull() { static ConvertDate h(Date(0, 0, 0), Date(3000, 12, 31), true); return h; }
const ConvertTime& StdConvertTime() { static ConvertTime h; return h; }
const ConvertTime& StdConvertTimeNotNull() { static ConvertTime h(Null, Null, true); return h; }
const ConvertString& StdConvertString() { static ConvertString h; return h; }
const ConvertString& StdConvertStringNotNull() { static ConvertString h(INT_MAX, true); return h; }
Value MapConvert::Format(const Value& q) const {
return map.Get(q, default_value);
}
NoConvertClass::NoConvertClass() {}
Value NoConvertClass::Format(const Value& q) const {
return q;
}
const NoConvertClass& NoConvert() {
return Single<NoConvertClass>();
}
Value ErrorConvertClass::Scan(const Value& v) const
{
return ErrorValue();
}
const ErrorConvertClass& ErrorConvert()
{
return Single<ErrorConvertClass>();
}
Value JoinConvert::Format(const Value& v) const {
String r;
ValueArray a = v;
for(int i = 0; i < item.GetCount(); i++) {
const Item& m = item[i];
if(m.pos < 0)
r << m.text;
else
r << (String) StdConvert().Format(m.convert->Format(a[m.pos]));
}
return r;
}
int JoinConvert::NextPos() const {
for(int i = item.GetCount() - 1; i >= 0; i--)
if(item[i].pos >= 0) return item[i].pos + 1;
return 0;
}
JoinConvert& JoinConvert::Add(const char *text) {
Item& m = item.Add();
m.pos = -1;
m.text = text;
return *this;
}
JoinConvert& JoinConvert::Add(int pos, const Convert& cv) {
ASSERT(pos >= 0);
Item& m = item.Add();
m.pos = pos;
m.convert = &cv;
return *this;
}
JoinConvert& JoinConvert::Add(int pos) {
Add(pos, StdConvert());
return *this;
}
JoinConvert& JoinConvert::Add(const Convert& cv) {
Add(NextPos(), cv);
return *this;
}
JoinConvert& JoinConvert::Add() {
Add(NextPos());
return *this;
}
Value FormatConvert::Format(const Value& v) const
{
ValueArray va;
if(IsValueArray(v))
va = v;
else
va.Add(v);
return UPP::Format(format, va.Get());
}
}