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Diffstat (limited to 'libxsde/xsde/cxx/parser/validating/date.cxx')
| -rw-r--r-- | libxsde/xsde/cxx/parser/validating/date.cxx | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/libxsde/xsde/cxx/parser/validating/date.cxx b/libxsde/xsde/cxx/parser/validating/date.cxx new file mode 100644 index 0000000..9efc52f --- /dev/null +++ b/libxsde/xsde/cxx/parser/validating/date.cxx @@ -0,0 +1,182 @@ +// file : xsde/cxx/parser/validating/date.cxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC +// license : GNU GPL v2 + exceptions; see accompanying LICENSE file + +#include <stdlib.h> // strtoul + +#include <xsde/cxx/config.hxx> +#include <xsde/cxx/errno.hxx> + +#include <xsde/cxx/parser/validating/date.hxx> +#include <xsde/cxx/parser/validating/time-zone.hxx> + +namespace xsde +{ + namespace cxx + { + namespace parser + { + namespace validating + { + void date_pimpl:: + _pre () + { +#ifdef XSDE_EXCEPTIONS + str_.assign ("", 0); +#else + if (str_.assign ("", 0)) + _sys_error (sys_error::no_memory); +#endif + } + + void date_pimpl:: + _characters (const ro_string& s) + { + if (str_.size () == 0) + { + ro_string tmp (s.data (), s.size ()); + + if (trim_left (tmp) != 0) + { +#ifdef XSDE_EXCEPTIONS + str_.append (tmp.data (), tmp.size ()); +#else + if (str_.append (tmp.data (), tmp.size ())) + _sys_error (sys_error::no_memory); +#endif + } + } + else + { +#ifdef XSDE_EXCEPTIONS + str_.append (s.data (), s.size ()); +#else + if (str_.append (s.data (), s.size ())) + _sys_error (sys_error::no_memory); +#endif + } + } + + void date_pimpl:: + _post () + { + char* s = str_.data (); + ro_string tmp (s, str_.size ()); + ro_string::size_type n = trim_right (tmp); + + // date := [-]CCYY[N]*-MM-DD[Z|(+|-)HH:MM] + // + + if (n < 10 || (s[0] == '-' && n < 11)) + { + _schema_error (schema_error::invalid_date_value); + return; + } + + // Find the end of the year token. + // + ro_string::size_type pos = tmp.find ('-', s[0] == '-' ? 5 : 4); + + if (pos == ro_string::npos || + (n - pos - 1) < 5 || + s[pos + 3] != '-') + { + _schema_error (schema_error::invalid_date_value); + return; + } + + // Parse the month, day values and time zone first so that we + // can truncate and reuse the string. + // + + // month + // + char d1 = s[pos + 1]; + char d2 = s[pos + 2]; + + if (d1 < '0' || d1 > '9' || d2 < '0' || d2 > '9') + { + _schema_error (schema_error::invalid_date_value); + return; + } + + month_ = 10 * (d1 - '0') + (d2 - '0'); + + if (month_ < 1 || month_ > 12) + { + _schema_error (schema_error::invalid_date_value); + return; + } + + // day + // + d1 = s[pos + 4]; + d2 = s[pos + 5]; + + if (d1 < '0' || d1 > '9' || d2 < '0' || d2 > '9') + { + _schema_error (schema_error::invalid_date_value); + return; + } + + day_ = 10 * (d1 - '0') + (d2 - '0'); + + if (day_ < 1 || day_ > 31) + { + _schema_error (schema_error::invalid_date_value); + return; + } + + // zone + // + if ((pos + 6) < n) + { + if (!bits::parse_time_zone (s + pos + 6, n - pos - 6, zh_, zm_)) + { + _schema_error (schema_error::invalid_date_value); + return; + } + + z_ = true; + } + else + z_ = false; + + // year + // + str_.truncate (pos); + + char* p; + set_errno (0); + bool neg = (s[0] == '-'); + unsigned long ul = strtoul (neg ? s + 1 : s, &p, 10); + + if (*p != '\0' || + get_errno () != 0 || + (neg && ul > 2147483648UL) || + (!neg && ul > 2147483647UL) || + ul == 0) + { + _schema_error (schema_error::invalid_date_value); + return; + } + + year_ = neg + ? (ul == 2147483648UL + ? (-2147483647 - 1) + : -static_cast<int> (ul)) + : static_cast<int> (ul); + } + + date date_pimpl:: + post_date () + { + return z_ + ? date (year_, month_, day_, zh_, zm_) + : date (year_, month_, day_); + } + } + } + } +} |