note description: "DATE/TIME to STRING conversion" legal: "See notice at end of class." status: "See notice at end of class." date: "$Date: 2018-04-28 20:34:01 +0000 (Sat, 28 Apr 2018) $" revision: "$Revision: 101689 $" class DATE_TIME_CODE_STRING inherit FIND_SEPARATOR_FACILITY create make feature -- Creation make (s: STRING_8) -- Create code descriptors and hash-table from s. require s_exists: s /= Void local i, pos1, pos2: INTEGER_32 date_constants: DATE_CONSTANTS l_substrgs: like extracted_substrings l_substrg, l_substrg2: STRING_8 do create value.make (20) pos1 := 1 create date_constants days := date_constants.days_text.twin months := date_constants.months_text.twin from i := 1 until pos1 >= s.count loop pos2 := find_separator (s, pos1) l_substrgs := extracted_substrings (s, pos1, pos2) pos2 := pos2.abs l_substrg := l_substrgs.substrg l_substrg.to_lower if l_substrg.count > 0 then value.put (create {DATE_TIME_CODE}.make (l_substrg), i) i := i + 1 end l_substrg2 := l_substrgs.substrg2 if l_substrg2.count > 0 then value.put (create {DATE_TIME_CODE}.make (l_substrg2), i) i := i + 1 separators_used := True end pos1 := pos2 + 1 end base_century := (create {C_DATE}).year_now // 100 * -100 ensure value_set: value /= Void base_century_set: base_century < 0 and (base_century \\ 100 = 0) end feature -- Attributes value: HASH_TABLE [DATE_TIME_CODE, INTEGER_32] -- Hash-table representing the code string. name: STRING_8 -- Name of the code string. local i: INTEGER_32 l_item: detachable DATE_TIME_CODE do create Result.make (1) from i := 1 l_item := value.item (i) until l_item = Void loop Result.append (l_item.name) Result.append_character (' ') i := i + 1 l_item := value.item (i) end end base_century: INTEGER_32 -- Base century, used when interpreting 2-digit year -- specifications. feature -- Status report is_date (s: STRING_8): BOOLEAN -- Does s contain a DATE? require non_empty_string: s /= Void and then not s.is_empty do Result := parser (s).is_date end is_time (s: STRING_8): BOOLEAN -- Does s contain a TIME? require non_empty_string: s /= Void and then not s.is_empty do Result := parser (s).is_time end is_date_time (s: STRING_8): BOOLEAN -- Does s contain a DATE_TIME? require non_empty_string: s /= Void and then not s.is_empty do Result := parser (s).is_date_time end is_value_valid (s: STRING_8): BOOLEAN -- Does s contain a valid date or time as string representation? require non_empty_string: s /= Void and then not s.is_empty local l_parser: like parser do l_parser := parser (s) Result := l_parser.is_date or l_parser.is_time or l_parser.is_date_time end separators_used: BOOLEAN -- Does the code string contain any separators? feature -- Status setting set_base_century (c: INTEGER_32) -- Set base century to c. require base_valid: c > 0 and (c \\ 100 = 0) do base_century := c ensure base_century_set: base_century = c end feature -- Interface correspond (s: STRING_8): BOOLEAN -- Does the user string s correspond to the code string? require s_exists: s /= Void local pos1, pos2, i: INTEGER_32 code: detachable DATE_TIME_CODE has_seps: BOOLEAN l_substrgs: like extracted_substrings l_substrg, l_substrg2: STRING_8 do pos1 := 1 if s.is_empty then Result := False else Result := True has_seps := has_separators (s) end from i := 1 until pos1 > s.count or not Result loop code := value.item (i) if code = Void then Result := False else if has_seps then pos2 := find_separator (s, pos1) else pos2 := (pos1 + code.count_max - 1) * -1 end l_substrgs := extracted_substrings (s, pos1, pos2) pos2 := pos2.abs l_substrg := l_substrgs.substrg if l_substrg.count > 0 then Result := l_substrg.count <= code.count_max and l_substrg.count >= code.count_min if code.is_numeric then Result := Result and l_substrg.is_integer if code.value_max /= -1 and code.value_min /= -1 then Result := Result and l_substrg.to_integer <= code.value_max and l_substrg.to_integer >= code.value_min end elseif code.is_meridiem (code.value) then Result := Result and (l_substrg.is_case_insensitive_equal ("AM") or l_substrg.is_case_insensitive_equal ("PM")) elseif code.is_day_text (code.value) then Result := Result and days.has (l_substrg) elseif code.is_month_text (code.value) then Result := Result and months.has (l_substrg) end i := i + 1 end if has_seps then code := value.item (i) i := i + 1 if code /= Void then l_substrg2 := l_substrgs.substrg2 Result := Result and pos2 /= s.count and l_substrg2.same_string (code.value) end end pos1 := pos2 + 1 end end end create_string (date_time: DATE_TIME): STRING_8 -- Create the output of date_time according to the code string. require non_void: date_time /= Void local date: DATE time: TIME int, i, type: INTEGER_32 l_tmp: STRING_8 l_item: detachable DATE_TIME_CODE do create Result.make (1) date := date_time.date time := date_time.time from i := 1 l_item := value.item (i) until l_item = Void loop type := l_item.type inspect type when {DATE_TIME_CODE}.day_numeric_type_code then Result.append (date.day.out) when {DATE_TIME_CODE}.day_numeric_on_2_digits_type_code then int := date.day if int < 10 then Result.append ("0") end Result.append (int.out) when {DATE_TIME_CODE}.day_text_type_code then int := date.day_of_the_week Result.append (days.item (int)) when {DATE_TIME_CODE}.year_on_4_digits_type_code then l_tmp := date.year.out if l_tmp.count = 4 then Result.append (l_tmp) else if l_tmp.count = 1 then Result.append ("000") Result.append (l_tmp) elseif l_tmp.count = 2 then Result.append ("00") Result.append (l_tmp) elseif l_tmp.count = 3 then Result.append ("0") Result.append (l_tmp) end end when {DATE_TIME_CODE}.year_on_2_digits_type_code then l_tmp := date.year.out if l_tmp.count > 2 then l_tmp.keep_tail (2) elseif l_tmp.count = 1 then Result.append_character ('0') end Result.append (l_tmp) when {DATE_TIME_CODE}.month_numeric_type_code then Result.append (date.month.out) when {DATE_TIME_CODE}.month_numeric_on_2_digits_type_code then int := date.month if int < 10 then Result.append ("0") end Result.append (int.out) when {DATE_TIME_CODE}.month_text_type_code then int := date.month Result.append (months.item (int)) when {DATE_TIME_CODE}.hour_numeric_type_code then Result.append (time.hour.out) when {DATE_TIME_CODE}.hour_numeric_on_2_digits_type_code then int := time.hour if int < 10 then Result.append ("0") end Result.append (int.out) when {DATE_TIME_CODE}.hour_12_clock_scale_type_code, {DATE_TIME_CODE}.hour_12_clock_scale_on_2_digits_type_code then int := time.hour if int < 12 then if int = 0 then int := 12 end else if int /= 12 then int := int - 12 end end if type = {DATE_TIME_CODE}.hour_12_clock_scale_on_2_digits_type_code.to_integer_32 and then int < 10 then Result.append ("0") end Result.append (int.out) when {DATE_TIME_CODE}.minute_numeric_type_code then Result.append (time.minute.out) when {DATE_TIME_CODE}.minute_numeric_on_2_digits_type_code then int := time.minute if int < 10 then Result.append ("0") end Result.append (int.out) when {DATE_TIME_CODE}.second_numeric_type_code then Result.append (time.second.out) when {DATE_TIME_CODE}.second_numeric_on_2_digits_type_code then int := time.second if int < 10 then Result.append ("0") end Result.append (int.out) when {DATE_TIME_CODE}.fractional_second_numeric_type_code then int := (time.fractional_second * 10 ^ l_item.count_max.to_double).rounded l_tmp := int.out if l_tmp.count < l_item.count_max then Result.append (create {STRING_8}.make_filled ('0', l_item.count_max - l_tmp.count)) end Result.append (l_tmp) when {DATE_TIME_CODE}.meridiem_type_code then int := time.hour if int < 12 then Result.append ("AM") else Result.append ("PM") end else Result.append (l_item.value) end i := i + 1 l_item := value.item (i) end ensure string_exists: Result /= Void string_correspond: correspond (Result) end create_date_string (date: DATE): STRING_8 -- Create the output of date according to the code string. require date_exists: date /= Void do Result := create_string (create {DATE_TIME}.make_by_date (date)) ensure string_exists: Result /= Void string_correspond: correspond (Result) end create_time_string (time: TIME): STRING_8 -- Create the output of time according to the code string. require time_exists: time /= Void local date_time: DATE_TIME do create date_time.make_fine (1, 1, 1, time.hour, time.minute, time.fine_second) Result := create_string (date_time) ensure string_exists: Result /= Void string_correspond: correspond (Result) end create_date_time (s: STRING_8): DATE_TIME -- Create DATE_TIME according to s. require s_exist: s /= Void is_precise: precise s_correspond: correspond (s) valid: is_value_valid (s) local l_parser: like parser l_day_text: detachable STRING_8 do right_day_text := True l_parser := parser (s) create Result.make_fine (l_parser.year, l_parser.month, l_parser.day, l_parser.hour, l_parser.minute, l_parser.fine_second) l_day_text := l_parser.day_text if l_day_text /= Void then right_day_text := l_day_text.same_string (days.item (Result.date.day_of_the_week)) end ensure date_time_exists: Result /= Void day_text_equal_day: right_day_text end create_date (s: STRING_8): DATE -- Create a DATE according to the format in s. require s_exists: s /= Void is_precise: precise_date s_correspond: correspond (s) local tmp_code: DATE_TIME_CODE tmp_ht: HASH_TABLE [DATE_TIME_CODE, INTEGER_32] i: INTEGER_32 do tmp_ht := value.twin i := value.count + 1 if has_separators (s) then create tmp_code.make (" ") value.put (tmp_code, i) create tmp_code.make ("hh") value.put (tmp_code, i + 1) create tmp_code.make (":") value.put (tmp_code, i + 2) create tmp_code.make ("mi") value.put (tmp_code, i + 3) create tmp_code.make (":") value.put (tmp_code, i + 4) create tmp_code.make ("ss") value.put (tmp_code, i + 5) s.append (" 0:0:0") Result := create_date_time (s).date s.replace_substring_all (" 0:0:0", "") else create tmp_code.make ("[0]hh") value.put (tmp_code, i) create tmp_code.make ("[0]mi") value.put (tmp_code, i + 1) create tmp_code.make ("[0]ss") value.put (tmp_code, i + 2) s.append ("000000") Result := create_date_time (s).date s.remove_tail (6) end value := tmp_ht ensure date_exists: Result /= Void day_text_equal_day: right_day_text end create_time (s: STRING_8): TIME -- Create a TIME according to the format in s. require s_exists: s /= Void is_precise: precise_time s_correspond: correspond (s) local tmp_code: DATE_TIME_CODE tmp_ht: HASH_TABLE [DATE_TIME_CODE, INTEGER_32] i: INTEGER_32 do tmp_ht := value.twin i := value.count + 1 if has_separators (s) then create tmp_code.make (" ") value.put (tmp_code, i) create tmp_code.make ("dd") value.put (tmp_code, i + 1) create tmp_code.make ("/") value.put (tmp_code, i + 2) create tmp_code.make ("mm") value.put (tmp_code, i + 3) create tmp_code.make ("/") value.put (tmp_code, i + 4) create tmp_code.make ("yy") value.put (tmp_code, i + 5) s.append (" 1/1/01") Result := create_date_time (s).time s.replace_substring_all (" 1/1/01", "") else create tmp_code.make ("[0]dd") value.put (tmp_code, i) create tmp_code.make ("[0]mm") value.put (tmp_code, i + 1) create tmp_code.make ("yy") value.put (tmp_code, i + 2) s.append ("010101") Result := create_date_time (s).time s.remove_tail (6) end value := tmp_ht ensure time_exists: Result /= Void time_correspond: create_time_string (Result).same_string (s) end precise: BOOLEAN -- Is the code string enough precise to create -- nn instance of type DATE_TIME? require not_void: value /= Void do Result := precise_date and precise_time end precise_date: BOOLEAN -- Is the code string enough precise to create -- nn instance of type DATE? require not_void: value /= Void local i, type: INTEGER_32 has_day, has_month, has_year: BOOLEAN do from i := 1 until not attached value.item (i) as l_item loop type := l_item.type if separators_used then inspect type when {DATE_TIME_CODE}.day_numeric_type_code, {DATE_TIME_CODE}.day_numeric_on_2_digits_type_code then has_day := True when {DATE_TIME_CODE}.year_on_4_digits_type_code, {DATE_TIME_CODE}.year_on_2_digits_type_code then has_year := True when {DATE_TIME_CODE}.month_numeric_type_code, {DATE_TIME_CODE}.month_numeric_on_2_digits_type_code, {DATE_TIME_CODE}.month_text_type_code then has_month := True else end else inspect type when {DATE_TIME_CODE}.day_numeric_on_2_digits_type_code then has_day := True when {DATE_TIME_CODE}.year_on_4_digits_type_code, {DATE_TIME_CODE}.year_on_2_digits_type_code then has_year := True when {DATE_TIME_CODE}.month_numeric_on_2_digits_type_code then has_month := True else end end i := i + 1 end Result := has_day and has_month and has_year end precise_time: BOOLEAN -- Is the code string enough precise to create -- an instance of type TIME? require not_void: value /= Void local i, type: INTEGER_32 has_hour_12, has_hour_24, has_minute, has_second: BOOLEAN do from i := 1 until not attached value.item (i) as l_item loop type := l_item.type if separators_used then inspect type when {DATE_TIME_CODE}.hour_numeric_type_code, {DATE_TIME_CODE}.hour_numeric_on_2_digits_type_code then has_hour_24 := True when {DATE_TIME_CODE}.minute_numeric_type_code, {DATE_TIME_CODE}.minute_numeric_on_2_digits_type_code then has_minute := True when {DATE_TIME_CODE}.second_numeric_type_code, {DATE_TIME_CODE}.second_numeric_on_2_digits_type_code then has_second := True when {DATE_TIME_CODE}.hour_12_clock_scale_type_code, {DATE_TIME_CODE}.hour_12_clock_scale_on_2_digits_type_code then has_hour_12 := True else end else inspect type when {DATE_TIME_CODE}.hour_numeric_on_2_digits_type_code then has_hour_24 := True when {DATE_TIME_CODE}.minute_numeric_on_2_digits_type_code then has_minute := True when {DATE_TIME_CODE}.second_numeric_on_2_digits_type_code then has_second := True when {DATE_TIME_CODE}.hour_12_clock_scale_on_2_digits_type_code then has_hour_12 := True else end end i := i + 1 end Result := (has_hour_24 or has_hour_12) and has_minute and has_second end feature {NONE} -- Implementation days: ARRAY [STRING_8] months: ARRAY [STRING_8] right_day_text: BOOLEAN -- Is the name of the day the right one? parser (s: STRING_8): DATE_TIME_PARSER -- Parser from s. -- Build a new one if necessary. require non_empty_string: s /= Void and then not s.is_empty do Result := internal_parser if not attached Result or else not equal (Result.source_string, s) then create Result.make (value) Result.set_day_array (days) Result.set_month_array (months) Result.set_base_century (base_century) Result.set_source_string (s) Result.parse internal_parser := Result end ensure parser_not_void: Result /= Void end internal_parser: detachable DATE_TIME_PARSER -- Cached instance of date-time string parser note copyright: "Copyright (c) 1984-2018, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class DATE_TIME_CODE_STRING
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