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https://github.com/GothenburgBitFactory/taskwarrior.git
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Parsing
- Nibbler learned how to parse formtted dates. Date now uses Nibbler. - Added Nibbler unit tests.
This commit is contained in:
Paul Beckingham
parent
236738c708
commit
a749f83da3
4 changed files with 415 additions and 271 deletions
279
src/Date.cpp
279
src/Date.cpp
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@ -24,12 +24,14 @@
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// USA
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//
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////////////////////////////////////////////////////////////////////////////////
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#include <iomanip>
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#include <sstream>
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#include <time.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <Nibbler.h>
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#include <Date.h>
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#include <text.h>
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#include <util.h>
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@ -83,13 +85,6 @@ Date::Date (const int m, const int d, const int y,
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////////////////////////////////////////////////////////////////////////////////
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Date::Date (const std::string& input, const std::string& format /* = "m/d/Y" */)
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{
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int month = 0;
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int day = 0;
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int year = -1; // So we can check later.
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int hour = 0;
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int minute = 0;
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int second = 0;
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// Perhaps it is an epoch date, in string form?
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if (isEpoch (input))
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return;
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@ -98,268 +93,16 @@ Date::Date (const std::string& input, const std::string& format /* = "m/d/Y" */)
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if (isRelativeDate (input))
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return;
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unsigned int i = 0; // Index into input.
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// Parse an ISO date.
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Nibbler n (input);
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if (n.getDateISO (mT) && n.depleted ())
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return;
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// Format may include: mMdDyYVaAbBhHNSjJ
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//
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// Note that the format should never include T or Z, as that interferes with
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// the potential parsing for ISO dates constructed from the above format.
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for (unsigned int f = 0; f < format.length (); ++f)
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{
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switch (format[f])
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{
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// Single or double digit.
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case 'm':
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if (i >= input.length () ||
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! isdigit (input[i]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (m). Expected format '" + format + "'";
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}
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// Parse a formatted date.
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if (n.getDate (format, mT) && n.depleted ())
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return;
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if (i + 1 < input.length () &&
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(input[i + 0] == '0' || input[i + 0] == '1') &&
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isdigit (input[i + 1]))
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{
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month = atoi (input.substr (i, 2).c_str ());
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i += 2;
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}
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else
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{
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month = atoi (input.substr (i, 1).c_str ());
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++i;
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}
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break;
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case 'd':
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if (i >= input.length () ||
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! isdigit (input[i]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (d). Expected format '" + format + "'";
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}
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if (i + 1 < input.length () &&
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(input[i + 0] == '0' || input[i + 0] == '1' || input[i + 0] == '2' || input[i + 0] == '3') &&
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isdigit (input[i + 1]))
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{
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day = atoi (input.substr (i, 2).c_str ());
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i += 2;
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}
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else
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{
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day = atoi (input.substr (i, 1).c_str ());
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++i;
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}
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break;
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// Double digit.
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case 'y':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (y). Expected format '" + format + "'";
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}
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year = atoi (input.substr (i, 2).c_str ()) + 2000;
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i += 2;
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break;
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case 'M':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (M). Expected format '" + format + "'";
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}
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month = atoi (input.substr (i, 2).c_str ());
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i += 2;
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break;
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case 'D':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (D). Expected format '" + format + "'";
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}
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day = atoi (input.substr (i, 2).c_str ());
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i += 2;
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break;
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case 'V':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (V). Expected format '" + format + "'";
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}
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i += 2;
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break;
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// Quadruple digit.
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case 'Y':
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if (i + 3 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]) ||
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! isdigit (input[i + 2]) ||
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! isdigit (input[i + 3]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (Y). Expected format '" + format + "'";
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}
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year = atoi (input.substr (i, 4).c_str ());
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i += 4;
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break;
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// Short names with 3 characters
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case 'a':
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if (i + 2 >= input.length () ||
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isdigit (input[i + 0]) ||
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isdigit (input[i + 1]) ||
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isdigit (input[i + 2]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (a). Expected format '" + format + "'";
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}
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i += 3;
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break;
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case 'b':
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if (i + 2 >= input.length () ||
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isdigit (input[i + 0]) ||
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isdigit (input[i + 1]) ||
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isdigit (input[i + 2]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (b). Expected format '" + format + "'";
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}
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month = Date::monthOfYear (input.substr (i, 3).c_str());
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i += 3;
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break;
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// Long names
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case 'A':
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if (i + 2 >= input.length () ||
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isdigit (input[i + 0]) ||
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isdigit (input[i + 1]) ||
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isdigit (input[i + 2]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (A). Expected format '" + format + "'";
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}
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i += Date::dayName( Date::dayOfWeek (input.substr (i, 3).c_str()) ).size();
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break;
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case 'B':
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if (i + 2 >= input.length () ||
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isdigit (input[i + 0]) ||
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isdigit (input[i + 1]) ||
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isdigit (input[i + 2]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (B). Expected format '" + format + "'";
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}
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month = Date::monthOfYear (input.substr (i, 3).c_str());
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i += Date::monthName(month).size();
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break;
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// Single or double digit.
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case 'h':
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if (i >= input.length () ||
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! isdigit (input[i]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (h). Expected format '" + format + "'";
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}
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if (i + 1 < input.length () &&
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(input[i + 0] == '0' || input[i + 0] == '1' || input[i + 0] == '2') &&
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isdigit (input[i + 1]))
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{
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hour = atoi (input.substr (i, 2).c_str ());
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i += 2;
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}
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else
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{
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hour = atoi (input.substr (i, 1).c_str ());
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++i;
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}
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break;
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case 'H':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (H). Expected format '" + format + "'";
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}
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hour = atoi (input.substr (i, 2).c_str ());
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i += 2;
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break;
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case 'N':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (N). Expected format '" + format + "'";
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}
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minute = atoi (input.substr (i, 2).c_str ());
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i += 2;
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break;
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case 'S':
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if (i + 1 >= input.length () ||
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! isdigit (input[i + 0]) ||
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! isdigit (input[i + 1]))
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{
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throw std::string ("\"") + input + "\" is not a valid date (S). Expected format '" + format + "'";
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}
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second = atoi (input.substr (i, 2).c_str ());
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i += 2;
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break;
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default:
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if (i >= input.length () ||
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input[i] != format[f])
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{
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throw std::string ("\"") + input + "\" is not a valid date. Expected format '" + format + "'";
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}
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++i;
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break;
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}
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}
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// Default the year to the current year, for formats that lack Y/y.
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if (year == -1)
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{
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time_t now = time (NULL);
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struct tm* default_year = localtime (&now);
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year = default_year->tm_year + 1900;
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}
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if (i < input.length ())
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throw std::string ("\"") + input + "\" is not a valid date. Expected format '" + format + "'";
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if (!valid (month, day, year))
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throw std::string ("\"") + input + "\" is not a valid date but is in a valid format.";
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// Convert to epoch.
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struct tm t = {0};
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t.tm_isdst = -1; // Requests that mktime determine summer time effect.
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t.tm_mday = day;
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t.tm_mon = month - 1;
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t.tm_year = year - 1900;
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t.tm_hour = hour;
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t.tm_min = minute;
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t.tm_sec = second;
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mT = mktime (&t);
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throw std::string ("'") + input + "' is not a valid date in the '" + format + "' format.";
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}
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////////////////////////////////////////////////////////////////////////////////
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@ -451,6 +194,8 @@ const std::string Date::toString (const std::string& format /*= "m/d/Y" */) cons
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case 'H': sprintf (buffer, "%02d", this->hour ()); break;
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case 'N': sprintf (buffer, "%02d", this->minute ()); break;
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case 'S': sprintf (buffer, "%02d", this->second ()); break;
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case 'j': sprintf (buffer, "%d", this->dayOfYear ()); break;
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case 'J': sprintf (buffer, "%03d", this->dayOfYear ()); break;
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default: sprintf (buffer, "%c", c); break;
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}
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