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authorBen Longbons <b.r.longbons@gmail.com>2014-03-15 19:34:59 -0700
committerBen Longbons <b.r.longbons@gmail.com>2014-03-16 18:58:48 -0700
commitc812c92d1a1835f0bda783e709481188c8d92225 (patch)
treeb401ede48a088ad1aaed88fe3b997cd26ff7ae08 /src/mmo/human_time_diff.hpp
parentde9ee1b9754af9d954487121947352f32d7ebb7e (diff)
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Clean up header organization
Diffstat (limited to 'src/mmo/human_time_diff.hpp')
-rw-r--r--src/mmo/human_time_diff.hpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/mmo/human_time_diff.hpp b/src/mmo/human_time_diff.hpp
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+#ifndef TMWA_MMO_HUMAN_TIME_DIFF_HPP
+#define TMWA_MMO_HUMAN_TIME_DIFF_HPP
+// human_time_diff.hpp - broken deltas
+//
+// Copyright © 2013 Ben Longbons <b.r.longbons@gmail.com>
+//
+// This file is part of The Mana World (Athena server)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# include "../sanity.hpp"
+
+# include "../strings/xstring.hpp"
+
+# include "extract.hpp"
+
+struct HumanTimeDiff
+{
+ short year, month, day, hour, minute, second;
+
+ explicit
+ operator bool()
+ {
+ return year || month || day || hour || minute || second;
+ }
+
+ bool operator !()
+ {
+ return !bool(*this);
+ }
+};
+
+inline
+bool extract(XString str, HumanTimeDiff *iv)
+{
+ // str is a sequence of [-+]?[0-9]+([ay]|m|[jd]|h|mn|s)
+ // there are NO spaces here
+ // parse by counting the number starts
+ auto is_num = [](char c)
+ { return c == '-' || c == '+' || ('0' <= c && c <= '9'); };
+ if (!str || !is_num(str.front()))
+ return false;
+ *iv = HumanTimeDiff{};
+ while (str)
+ {
+ auto it = std::find_if_not(str.begin(), str.end(), is_num);
+ auto it2 = std::find_if(it, str.end(), is_num);
+ XString number = str.xislice_h(it);
+ XString suffix = str.xislice(it, it2);
+ str = str.xislice_t(it2);
+
+ short *ptr = nullptr;
+ if (suffix == "y" || suffix == "a")
+ ptr = &iv->year;
+ else if (suffix == "m")
+ ptr = &iv->month;
+ else if (suffix == "j" || suffix == "d")
+ ptr = &iv->day;
+ else if (suffix == "h")
+ ptr = &iv->hour;
+ else if (suffix == "mn")
+ ptr = &iv->minute;
+ else if (suffix == "s")
+ ptr = &iv->second;
+ else
+ return false;
+ if (number.startswith('+') && !number.startswith("+-"))
+ number = number.xslice_t(1);
+ if (*ptr || !extract(number, ptr))
+ return false;
+ }
+ return true;
+}
+
+#endif // TMWA_MMO_HUMAN_TIME_DIFF_HPP