summaryrefslogtreecommitdiffstats
path: root/kspread/valueparser.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'kspread/valueparser.cpp')
-rw-r--r--kspread/valueparser.cpp631
1 files changed, 631 insertions, 0 deletions
diff --git a/kspread/valueparser.cpp b/kspread/valueparser.cpp
new file mode 100644
index 00000000..08ebe628
--- /dev/null
+++ b/kspread/valueparser.cpp
@@ -0,0 +1,631 @@
+/* This file is part of the KDE project
+ Copyright 2004 Tomas Mecir <[email protected]>
+ Copyright (C) 1998, 1999 Torben Weis <[email protected]>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+#include "valueparser.h"
+
+#include "kspread_cell.h"
+#include "kspread_format.h"
+#include "kspread_locale.h"
+#include "kspread_value.h"
+
+using namespace KSpread;
+
+ValueParser::ValueParser( TDELocale* locale ) : parserLocale( locale )
+{
+}
+
+TDELocale* ValueParser::locale()
+{
+ return parserLocale;
+}
+
+void ValueParser::parse (const TQString& str, Cell *cell)
+{
+ FormatType format = cell->formatType();
+
+ // If the text is empty, we don't have a value
+ // If the user stated explicitly that he wanted text
+ // (using the format or using a quote),
+ // then we don't parse as a value, but as string.
+ if ( str.isEmpty() || format == Text_format || str.at(0)=='\'' )
+ {
+ cell->setValue (str);
+ return;
+ }
+
+ TQString strStripped = str.stripWhiteSpace();
+
+ // Try parsing as various datatypes, to find the type of the cell
+
+ // First as number
+ if (tryParseNumber (strStripped, cell))
+ return;
+
+ // Then as bool
+ if (tryParseBool (strStripped, cell))
+ return;
+
+
+ // Test for money number
+ bool ok;
+ double money = parserLocale->readMoney (strStripped, &ok);
+ if (ok)
+ {
+ cell->format()->setPrecision(2);
+ Value val (money);
+ val.setFormat (Value::fmt_Money);
+ cell->setValue (val);
+ return;
+ }
+
+ if (tryParseDate (strStripped, cell))
+ return;
+
+ if (tryParseTime (strStripped, cell))
+ return;
+
+ // Nothing particular found, then this is simply a string
+ cell->setValue (Value (str));
+}
+
+Value ValueParser::parse (const TQString &str)
+{
+ Value val;
+
+ // If the text is empty, we don't have a value
+ // If the user stated explicitly that he wanted text
+ // (using the format or using a quote),
+ // then we don't parse as a value, but as string.
+ if ( str.isEmpty() || str.at(0)=='\'' )
+ {
+ val.setValue (str);
+ return val;
+ }
+
+ bool ok;
+
+ TQString strStripped = str.stripWhiteSpace();
+ // Try parsing as various datatypes, to find the type of the string
+
+ // First as number
+ val = tryParseNumber (strStripped, &ok);
+ if (ok)
+ return val;
+
+ // Then as bool
+ // Note - I swapped the order of these two to try parsing as a number
+ // first because that will probably be the most common case
+ val = tryParseBool (strStripped, &ok);
+ if (ok)
+ return val;
+
+
+ // Test for money number
+ double money = parserLocale->readMoney (strStripped, &ok);
+ if (ok)
+ {
+ val.setValue (money);
+ val.setFormat (Value::fmt_Money);
+ return val;
+ }
+
+ val = tryParseDate (strStripped, &ok);
+ if (ok)
+ return val;
+
+ val = tryParseTime (strStripped, &ok);
+ if (ok)
+ return val;
+
+ // Nothing particular found, then this is simply a string
+ val.setValue (str);
+ return val;
+}
+
+bool ValueParser::tryParseBool (const TQString& str, Cell *cell)
+{
+ bool ok;
+ Value val = tryParseBool (str, &ok);
+ if (ok)
+ cell->setValue (val);
+ return ok;
+}
+
+bool ValueParser::tryParseNumber (const TQString& str, Cell *cell)
+{
+ bool ok;
+ Value val = tryParseNumber (str, &ok);
+ if (ok)
+ cell->setValue (val);
+ return ok;
+}
+
+bool ValueParser::tryParseDate (const TQString& str, Cell *cell)
+{
+ bool ok;
+ Value value = tryParseDate (str, &ok);
+ if (ok)
+ cell->setValue (value);
+ return ok;
+}
+
+bool ValueParser::tryParseTime (const TQString& str, Cell *cell)
+{
+ bool ok;
+ Value value = tryParseTime (str, &ok);
+ if (ok)
+ cell->setValue (value);
+ return ok;
+}
+
+
+Value ValueParser::tryParseBool (const TQString& str, bool *ok)
+{
+ Value val;
+ if (ok) *ok = false;
+
+ const TQString& lowerStr = str.lower();
+
+ if ((lowerStr == "true") ||
+ (lowerStr == parserLocale->translate("true").lower()))
+ {
+ val.setValue (true);
+ if (ok) *ok = true;
+ }
+ else if ((lowerStr == "false") ||
+ (lowerStr == parserLocale->translate("false").lower()))
+ {
+ val.setValue (false);
+ if (ok) *ok = true;
+ fmtType = Number_format; //TODO: really?
+ }
+ return val;
+}
+
+double ValueParser::readNumber(const TQString &_str, bool * ok, bool * isInt)
+{
+ TQString str = _str.stripWhiteSpace();
+ bool neg = str.find(parserLocale->negativeSign()) == 0;
+ if (neg)
+ str.remove( 0, parserLocale->negativeSign().length() );
+
+ /* will hold the scientific notation portion of the number.
+ Example, with 2.34E+23, exponentialPart == "E+23"
+ */
+ TQString exponentialPart;
+ int EPos;
+
+ EPos = str.find('E', 0, false);
+
+ if (EPos != -1)
+ {
+ exponentialPart = str.mid(EPos);
+ str = str.left(EPos);
+ }
+
+ int pos = str.find(parserLocale->decimalSymbol());
+ TQString major;
+ TQString minor;
+ if ( pos == -1 )
+ {
+ major = str;
+ if (isInt) *isInt = true;
+ }
+ else
+ {
+ major = str.left(pos);
+ minor = str.mid(pos + parserLocale->decimalSymbol().length());
+ if (isInt) *isInt = false;
+ }
+
+ // Remove thousand separators
+ int thlen = parserLocale->thousandsSeparator().length();
+ int lastpos = 0;
+ while ( ( pos = major.find( parserLocale->thousandsSeparator() ) ) > 0 )
+ {
+ // e.g. 12,,345,,678,,922 Acceptable positions (from the end) are 5, 10, 15... i.e. (3+thlen)*N
+ int fromEnd = major.length() - pos;
+ if ( fromEnd % (3+thlen) != 0 // Needs to be a multiple, otherwise it's an error
+ || pos - lastpos > 3 // More than 3 digits between two separators -> error
+ || pos == 0 // Can't start with a separator
+ || (lastpos>0 && pos-lastpos!=3)) // Must have exactly 3 digits between two separators
+ {
+ if (ok) *ok = false;
+ return 0.0;
+ }
+
+ lastpos = pos;
+ major.remove( pos, thlen );
+ }
+ if (lastpos>0 && major.length()-lastpos!=3) // Must have exactly 3 digits after the last separator
+ {
+ if (ok) *ok = false;
+ return 0.0;
+ }
+
+ TQString tot;
+ if (neg) tot = '-';
+
+ tot += major + '.' + minor + exponentialPart;
+
+ return tot.toDouble(ok);
+}
+
+Value ValueParser::tryParseNumber (const TQString& str, bool *ok)
+{
+ Value value;
+
+ bool percent = false;
+ TQString str2;
+ if( str.at(str.length()-1)=='%')
+ {
+ str2 = str.left (str.length()-1).stripWhiteSpace();
+ percent = true;
+ }
+ else
+ str2 = str;
+
+
+ // First try to understand the number using the parserLocale
+ bool isInt;
+ double val = readNumber (str2, ok, &isInt);
+ // If not, try with the '.' as decimal separator
+ if (!(*ok))
+ {
+ val = str2.toDouble(ok);
+ if (str.contains('.'))
+ isInt = false;
+ else
+ isInt = true;
+ }
+
+ if (*ok)
+ {
+ if (percent)
+ {
+ //kdDebug(36001) << "ValueParser::tryParseNumber '" << str <<
+ // "' successfully parsed as percentage: " << val << "%" << endl;
+ value.setValue (val / 100.0);
+ value.setFormat (Value::fmt_Percent);
+ fmtType = Percentage_format;
+ }
+ else
+ {
+ //kdDebug(36001) << "ValueParser::tryParseNumber '" << str <<
+ // "' successfully parsed as number: " << val << endl;
+ if (isInt)
+ value.setValue (static_cast<long> (val));
+ else
+ value.setValue (val);
+
+ if ( str2.contains('E') || str2.contains('e') )
+ fmtType = Scientific_format;
+ else
+ {
+ if (val > 1e+10)
+ fmtType = Scientific_format;
+ else
+ fmtType = Number_format;
+ }
+ }
+ }
+
+ return value;
+}
+
+Value ValueParser::tryParseDate (const TQString& str, bool *ok)
+{
+ bool valid = false;
+ TQDate tmpDate = parserLocale->readDate (str, &valid);
+ if (!valid)
+ {
+ // Try without the year
+ // The tricky part is that we need to remove any separator around the year
+ // For instance %Y-%m-%d becomes %m-%d and %d/%m/%Y becomes %d/%m
+ // If the year is in the middle, say %m-%Y/%d, we'll remove the sep.
+ // before it (%m/%d).
+ TQString fmt = parserLocale->dateFormatShort();
+ int yearPos = fmt.find ("%Y", 0, false);
+ if ( yearPos > -1 )
+ {
+ if ( yearPos == 0 )
+ {
+ fmt.remove( 0, 2 );
+ while ( fmt[0] != '%' )
+ fmt.remove( 0, 1 );
+ } else
+ {
+ fmt.remove( yearPos, 2 );
+ for ( ; yearPos > 0 && fmt[yearPos-1] != '%'; --yearPos )
+ fmt.remove( yearPos, 1 );
+ }
+ //kdDebug(36001) << "Cell::tryParseDate short format w/o date: " << fmt << endl;
+ tmpDate = parserLocale->readDate( str, fmt, &valid );
+ }
+ }
+ if (valid)
+ {
+ // Note: if shortdate format only specifies 2 digits year, then 3/4/1955
+ // will be treated as in year 3055, while 3/4/55 as year 2055
+ // (because 55 < 69, see TDELocale) and thus there's no way to enter for
+ // year 1995
+
+ // The following fixes the problem, 3/4/1955 will always be 1955
+
+ TQString fmt = parserLocale->dateFormatShort();
+ if( ( fmt.contains( "%y" ) == 1 ) && ( tmpDate.year() > 2999 ) )
+ tmpDate = tmpDate.addYears( -1900 );
+
+ // this is another HACK !
+ // with two digit years, 0-69 is treated as year 2000-2069 (see TDELocale)
+ // however, in Excel only 0-29 is year 2000-2029, 30 or later is 1930
+ // onwards
+
+ // the following provides workaround for TDELocale so we're compatible
+ // with Excel
+ // (e.g 3/4/45 is Mar 4, 1945 not Mar 4, 2045)
+ if( ( tmpDate.year() >= 2030 ) && ( tmpDate.year() <= 2069 ) )
+ {
+ TQString yearFourDigits = TQString::number( tmpDate.year() );
+ TQString yearTwoDigits = TQString::number( tmpDate.year() % 100 );
+
+ // if year is 2045, check to see if "2045" isn't there --> actual
+ // input is "45"
+ if( ( str.contains( yearTwoDigits ) >= 1 ) &&
+ ( str.contains( yearFourDigits ) == 0 ) )
+ tmpDate = tmpDate.addYears( -100 );
+ }
+
+ //test if it's a short date or text date.
+ if (parserLocale->formatDate (tmpDate, false) == str)
+ fmtType = TextDate_format;
+ else
+ fmtType = ShortDate_format;
+ }
+ if (!valid)
+ {
+ //try to use the standard TQt date parsing, using ISO 8601 format
+ tmpDate = TQDate::fromString(str,Qt::ISODate);
+ if (tmpDate.isValid())
+ {
+ valid = true;
+ }
+ }
+
+ if (ok)
+ *ok = valid;
+
+ return Value (tmpDate);
+}
+
+Value ValueParser::tryParseTime (const TQString& str, bool *ok)
+{
+ if (ok)
+ *ok = false;
+
+ bool valid = false;
+ bool duration = false;
+ Value val;
+
+ TQDateTime tmpTime = readTime (str, true, &valid, duration);
+ if (!tmpTime.isValid())
+ tmpTime = readTime (str, false, &valid, duration);
+
+ if (!valid)
+ {
+ TQTime tm;
+ if (parserLocale->use12Clock())
+ {
+ TQString stringPm = parserLocale->translate("pm");
+ TQString stringAm = parserLocale->translate("am");
+ int pos=0;
+ if((pos=str.find(stringPm))!=-1)
+ {
+ TQString tmp=str.mid(0,str.length()-stringPm.length());
+ tmp=tmp.simplifyWhiteSpace();
+ tm = parserLocale->readTime(tmp+" "+stringPm, &valid);
+ if (!valid)
+ tm = parserLocale->readTime(tmp+":00 "+stringPm, &valid);
+ }
+ else if((pos=str.find(stringAm))!=-1)
+ {
+ TQString tmp = str.mid(0,str.length()-stringAm.length());
+ tmp = tmp.simplifyWhiteSpace();
+ tm = parserLocale->readTime (tmp + " " + stringAm, &valid);
+ if (!valid)
+ tm = parserLocale->readTime (tmp + ":00 " + stringAm, &valid);
+ }
+ if (valid)
+ tmpTime.setTime(tm);
+ }
+ }
+ if (valid)
+ {
+ fmtType = Time_format;
+ if ( duration )
+ {
+ val.setValue (tmpTime);
+ fmtType = Time_format7;
+ }
+ else
+ val.setValue (tmpTime.time());
+ }
+
+ if (ok)
+ *ok = valid;
+
+ return val;
+}
+
+TQDateTime ValueParser::readTime (const TQString & intstr, bool withSeconds,
+ bool *ok, bool & duration)
+{
+ duration = false;
+ TQString str = intstr.simplifyWhiteSpace().lower();
+ TQString format = parserLocale->timeFormat().simplifyWhiteSpace();
+ if ( !withSeconds )
+ {
+ int n = format.find("%S");
+ format = format.left( n - 1 );
+ }
+
+ int days = -1;
+ int hour = -1, minute = -1;
+ int second = withSeconds ? -1 : 0; // don't require seconds
+ bool g_12h = false;
+ bool pm = false;
+ uint strpos = 0;
+ uint formatpos = 0;
+
+ TQDate refDate( 1899, 12, 31 );
+
+ uint l = format.length();
+ uint sl = str.length();
+
+ while (l > formatpos || sl > strpos)
+ {
+ if ( !(l > formatpos && sl > strpos) )
+ goto error;
+
+ TQChar c( format.at( formatpos++ ) );
+
+ if (c != '%')
+ {
+ if (c.isSpace())
+ ++strpos;
+ else if (c != str.at(strpos++))
+ goto error;
+ continue;
+ }
+
+ // remove space at the begining
+ if (sl > strpos && str.at( strpos).isSpace() )
+ ++strpos;
+
+ c = format.at( formatpos++ );
+ switch (c)
+ {
+ case 'p':
+ {
+ TQString s;
+ s = parserLocale->translate("pm").lower();
+ int len = s.length();
+ if (str.mid(strpos, len) == s)
+ {
+ pm = true;
+ strpos += len;
+ }
+ else
+ {
+ s = parserLocale->translate("am").lower();
+ len = s.length();
+ if (str.mid(strpos, len) == s)
+ {
+ pm = false;
+ strpos += len;
+ }
+ else
+ goto error;
+ }
+ }
+ break;
+
+ case 'k':
+ case 'H':
+ g_12h = false;
+ hour = readInt(str, strpos);
+ if (hour < 0)
+ goto error;
+ if (hour > 23)
+ {
+ days = (int)(hour / 24);
+ hour %= 24;
+ }
+
+ break;
+
+ case 'l':
+ case 'I':
+ g_12h = true;
+ hour = readInt(str, strpos);
+ if (hour < 1 || hour > 12)
+ goto error;
+
+ break;
+
+ case 'M':
+ minute = readInt(str, strpos);
+ if (minute < 0 || minute > 59)
+ goto error;
+
+ break;
+
+ case 'S':
+ second = readInt(str, strpos);
+ if (second < 0 || second > 59)
+ goto error;
+
+ break;
+ }
+ }
+
+ if (g_12h)
+ {
+ hour %= 12;
+ if (pm) hour += 12;
+ }
+
+ if (days > 0)
+ {
+ refDate.addDays( days );
+ duration = true;
+ }
+
+ if (ok)
+ *ok = true;
+ return TQDateTime( refDate, TQTime( hour, minute, second ) );
+
+ error:
+ if (ok)
+ *ok = false;
+ // return invalid date if it didn't work
+ return TQDateTime( refDate, TQTime( -1, -1, -1 ) );
+}
+
+/**
+ * helper function to read integers, used in readTime
+ * @param str
+ * @param pos the position to start at. It will be updated when we parse it.
+ * @return the integer read in the string, or -1 if no string
+ */
+int ValueParser::readInt (const TQString &str, uint &pos)
+{
+ if (!str.at(pos).isDigit())
+ return -1;
+ int result = 0;
+ for ( ; str.length() > pos && str.at(pos).isDigit(); pos++ )
+ {
+ result *= 10;
+ result += str.at(pos).digitValue();
+ }
+
+ return result;
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-24 18:33:37 +0000