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00020
00021 #include <config.h>
00022 #include <plugin/collation_dictionary/dictionary.h>
00023
00024 using namespace std;
00025 using namespace drizzled;
00026
00027 CharacterSetsTool::CharacterSetsTool() :
00028 plugin::TableFunction("DATA_DICTIONARY", "CHARACTER_SETS")
00029 {
00030 add_field("CHARACTER_SET_NAME");
00031 add_field("DEFAULT_COLLATE_NAME");
00032 add_field("DESCRIPTION");
00033 add_field("MAXLEN", plugin::TableFunction::NUMBER, 0, false);
00034 }
00035
00036 CharacterSetsTool::Generator::Generator(Field **arg) :
00037 plugin::TableFunction::Generator(arg),
00038 is_char_primed(false)
00039 {
00040 }
00041
00042 bool CharacterSetsTool::Generator::checkCharacterSet()
00043 {
00044 if (character_set() && (character_set()->state & MY_CS_PRIMARY) &&
00045 (character_set()->state & MY_CS_AVAILABLE) && not (character_set()->state & MY_CS_HIDDEN))
00046 {
00047 return false;
00048 }
00049
00050 return true;
00051 }
00052
00053 bool CharacterSetsTool::Generator::nextCharacterSetCore()
00054 {
00055 if (is_char_primed)
00056 {
00057 character_set_iter++;
00058 }
00059 else
00060 {
00061 character_set_iter= all_charsets;
00062 is_char_primed= true;
00063 }
00064
00065 if (character_set_iter == all_charsets+255)
00066 return false;
00067
00068 if (checkCharacterSet())
00069 return false;
00070
00071 return true;
00072 }
00073
00074 bool CharacterSetsTool::Generator::nextCharacterSet()
00075 {
00076 while (not nextCharacterSetCore())
00077 {
00078 if (character_set_iter == all_charsets+255)
00079 return false;
00080 }
00081
00082 return true;
00083 }
00084
00085 bool CharacterSetsTool::Generator::populate()
00086 {
00087 if (nextCharacterSet())
00088 {
00089 fill();
00090 return true;
00091 }
00092
00093 return false;
00094 }
00095
00096 void CharacterSetsTool::Generator::fill()
00097 {
00098 const CHARSET_INFO * const tmp_cs= character_set_iter[0];
00099
00100
00101 push(tmp_cs->csname);
00102
00103
00104 push(tmp_cs->name);
00105
00106
00107 push(tmp_cs->comment);
00108
00109
00110 push(static_cast<int64_t>(tmp_cs->mbmaxlen));
00111 }