1Excel::Writer::XLSX::UtUisleirtyC(o3n)tributed Perl DocuEmxecnetla:t:iWorniter::XLSX::Utility(3)
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NAME

6       Utility - Helper functions for Excel::Writer::XLSX.
7

SYNOPSIS

9       Functions to help with some common tasks when using
10       Excel::Writer::XLSX.
11
12       These functions mainly relate to dealing with rows and columns in A1
13       notation and to handling dates and times.
14
15           use Excel::Writer::XLSX::Utility;                     # Import everything
16
17           ($row, $col)    = xl_cell_to_rowcol( 'C2' );          # (1, 2)
18           $str            = xl_rowcol_to_cell( 1, 2 );          # C2
19           $str            = xl_col_to_name( 702 );              # AAA
20           $str            = xl_inc_col( 'Z1'  );                # AA1
21           $str            = xl_dec_col( 'AA1' );                # Z1
22
23           $date           = xl_date_list(2002, 1, 1);           # 37257
24           $date           = xl_parse_date( '11 July 1997' );    # 35622
25           $time           = xl_parse_time( '3:21:36 PM' );      # 0.64
26           $date           = xl_decode_date_EU( '13 May 2002' ); # 37389
27

DESCRIPTION

29       This module provides a set of functions to help with some common tasks
30       encountered when using the Excel::Writer::XLSX module. The two main
31       categories of function are:
32
33       Row and column functions: these are used to deal with Excel's A1
34       representation of cells. The functions in this category are:
35
36           xl_rowcol_to_cell
37           xl_cell_to_rowcol
38           xl_col_to_name
39           xl_range
40           xl_range_formula
41           xl_inc_row
42           xl_dec_row
43           xl_inc_col
44           xl_dec_col
45
46       Date and Time functions: these are used to convert dates and times to
47       the numeric format used by Excel. The functions in this category are:
48
49           xl_date_list
50           xl_date_1904
51           xl_parse_time
52           xl_parse_date
53           xl_parse_date_init
54           xl_decode_date_EU
55           xl_decode_date_US
56
57       All of these functions are exported by default. However, you can use
58       import lists if you wish to limit the functions that are imported:
59
60           use Excel::Writer::XLSX::Utility;                  # Import everything
61           use Excel::Writer::XLSX::Utility qw(xl_date_list); # xl_date_list only
62           use Excel::Writer::XLSX::Utility qw(:rowcol);      # Row/col functions
63           use Excel::Writer::XLSX::Utility qw(:dates);       # Date functions
64

ROW AND COLUMN FUNCTIONS

66       Excel::Writer::XLSX supports two forms of notation to designate the
67       position of cells: Row-column notation and A1 notation.
68
69       Row-column notation uses a zero based index for both row and column
70       while A1 notation uses the standard Excel alphanumeric sequence of
71       column letter and 1-based row. Columns range from A to XFD, i.e. 0 to
72       16,383, rows range from 0 to 1,048,575 in Excel 2007+. For example:
73
74           (0, 0)      # The top left cell in row-column notation.
75           ('A1')      # The top left cell in A1 notation.
76
77           (1999, 29)  # Row-column notation.
78           ('AD2000')  # The same cell in A1 notation.
79
80       Row-column notation is useful if you are referring to cells
81       programmatically:
82
83           for my $i ( 0 .. 9 ) {
84               $worksheet->write( $i, 0, 'Hello' );    # Cells A1 to A10
85           }
86
87       A1 notation is useful for setting up a worksheet manually and for
88       working with formulas:
89
90           $worksheet->write( 'H1', 200 );
91           $worksheet->write( 'H2', '=H7+1' );
92
93       The functions in the following sections can be used for dealing with A1
94       notation, for example:
95
96           ( $row, $col ) = xl_cell_to_rowcol('C2');    # (1, 2)
97           $str           = xl_rowcol_to_cell( 1, 2 );  # C2
98
99       Cell references in Excel can be either relative or absolute. Absolute
100       references are prefixed by the dollar symbol as shown below:
101
102           A1      # Column and row are relative
103           $A1     # Column is absolute and row is relative
104           A$1     # Column is relative and row is absolute
105           $A$1    # Column and row are absolute
106
107       An absolute reference only makes a difference if the cell is copied.
108       Refer to the Excel documentation for further details. All of the
109       following functions support absolute references.
110
111   xl_rowcol_to_cell($row, $col, $row_absolute, $col_absolute)
112           Parameters: $row:           Integer
113                       $col:           Integer
114                       $row_absolute:  Boolean (1/0) [optional, default is 0]
115                       $col_absolute:  Boolean (1/0) [optional, default is 0]
116
117           Returns:    A string in A1 cell notation
118
119       This function converts a zero based row and column cell reference to a
120       A1 style string:
121
122           $str = xl_rowcol_to_cell( 0, 0 );    # A1
123           $str = xl_rowcol_to_cell( 0, 1 );    # B1
124           $str = xl_rowcol_to_cell( 1, 0 );    # A2
125
126       The optional parameters $row_absolute and $col_absolute can be used to
127       indicate if the row or column is absolute:
128
129           $str = xl_rowcol_to_cell( 0, 0, 0, 1 );    # $A1
130           $str = xl_rowcol_to_cell( 0, 0, 1, 0 );    # A$1
131           $str = xl_rowcol_to_cell( 0, 0, 1, 1 );    # $A$1
132
133       See above for an explanation of absolute cell references.
134
135   xl_cell_to_rowcol($string)
136           Parameters: $string         String in A1 format
137
138           Returns:    List            ($row, $col)
139
140       This function converts an Excel cell reference in A1 notation to a zero
141       based row and column. The function will also handle Excel's absolute,
142       "$", cell notation.
143
144           my ( $row, $col ) = xl_cell_to_rowcol('A1');      # (0, 0)
145           my ( $row, $col ) = xl_cell_to_rowcol('B1');      # (0, 1)
146           my ( $row, $col ) = xl_cell_to_rowcol('C2');      # (1, 2)
147           my ( $row, $col ) = xl_cell_to_rowcol('$C2');     # (1, 2)
148           my ( $row, $col ) = xl_cell_to_rowcol('C$2');     # (1, 2)
149           my ( $row, $col ) = xl_cell_to_rowcol('$C$2');    # (1, 2)
150
151   xl_col_to_name($col, $col_absolute)
152           Parameters: $col:           Integer
153                       $col_absolute:  Boolean (1/0) [optional, default is 0]
154
155           Returns:    A column string name.
156
157       This function converts a zero based column reference to a string:
158
159           $str = xl_col_to_name(0);      # A
160           $str = xl_col_to_name(1);      # B
161           $str = xl_col_to_name(702);    # AAA
162
163       The optional parameter $col_absolute can be used to indicate if the
164       column is absolute:
165
166           $str = xl_col_to_name( 0, 0 );    # A
167           $str = xl_col_to_name( 0, 1 );    # $A
168           $str = xl_col_to_name( 1, 1 );    # $B
169
170   xl_range($row_1, $row_2, $col_1, $col_2, $row_abs_1, $row_abs_2,
171       $col_abs_1, $col_abs_2)
172           Parameters: $sheetname      String
173                       $row_1:         Integer
174                       $row_2:         Integer
175                       $col_1:         Integer
176                       $col_2:         Integer
177                       $row_abs_1:     Boolean (1/0) [optional, default is 0]
178                       $row_abs_2:     Boolean (1/0) [optional, default is 0]
179                       $col_abs_1:     Boolean (1/0) [optional, default is 0]
180                       $col_abs_2:     Boolean (1/0) [optional, default is 0]
181
182           Returns:    A worksheet range formula as a string.
183
184       This function converts zero based row and column cell references to an
185       A1 style range string:
186
187           my $str = xl_range( 0, 9, 0, 0 );          # A1:A10
188           my $str = xl_range( 1, 8, 2, 2 );          # C2:C9
189           my $str = xl_range( 0, 3, 0, 4 );          # A1:E4
190           my $str = xl_range( 0, 3, 0, 4, 1 );       # A$1:E4
191           my $str = xl_range( 0, 3, 0, 4, 1, 1 );    # A$1:E$4
192
193   xl_range_formula($sheetname, $row_1, $row_2, $col_1, $col_2)
194           Parameters: $sheetname      String
195                       $row_1:         Integer
196                       $row_2:         Integer
197                       $col_1:         Integer
198                       $col_2:         Integer
199
200           Returns:    A worksheet range formula as a string.
201
202       This function converts zero based row and column cell references to an
203       A1 style formula string:
204
205           my $str = xl_range_formula( 'Sheet1', 0, 9,  0, 0 ); # =Sheet1!$A$1:$A$10
206           my $str = xl_range_formula( 'Sheet2', 6, 65, 1, 1 ); # =Sheet2!$B$7:$B$66
207           my $str = xl_range_formula( 'New data', 1, 8, 2, 2 );# ='New data'!$C$2:$C$9
208
209       This is useful for setting ranges in Chart objects:
210
211           $chart->add_series(
212               categories => xl_range_formula( 'Sheet1', 1, 9, 0, 0 ),
213               values     => xl_range_formula( 'Sheet1', 1, 9, 1, 1 ),
214           );
215
216           # Which is the same as:
217
218           $chart->add_series(
219               categories => '=Sheet1!$A$2:$A$10',
220               values     => '=Sheet1!$B$2:$B$10',
221           );
222
223   xl_inc_row($string)
224           Parameters: $string, a string in A1 format
225
226           Returns:    Incremented string in A1 format
227
228       This functions takes a cell reference string in A1 notation and
229       increments the row. The function will also handle Excel's absolute,
230       "$", cell notation:
231
232           my $str = xl_inc_row( 'A1' );      # A2
233           my $str = xl_inc_row( 'B$2' );     # B$3
234           my $str = xl_inc_row( '$C3' );     # $C4
235           my $str = xl_inc_row( '$D$4' );    # $D$5
236
237   xl_dec_row($string)
238           Parameters: $string, a string in A1 format
239
240           Returns:    Decremented string in A1 format
241
242       This functions takes a cell reference string in A1 notation and
243       decrements the row. The function will also handle Excel's absolute,
244       "$", cell notation:
245
246           my $str = xl_dec_row( 'A2' );      # A1
247           my $str = xl_dec_row( 'B$3' );     # B$2
248           my $str = xl_dec_row( '$C4' );     # $C3
249           my $str = xl_dec_row( '$D$5' );    # $D$4
250
251   xl_inc_col($string)
252           Parameters: $string, a string in A1 format
253
254           Returns:    Incremented string in A1 format
255
256       This functions takes a cell reference string in A1 notation and
257       increments the column. The function will also handle Excel's absolute,
258       "$", cell notation:
259
260           my $str = xl_inc_col( 'A1' );      # B1
261           my $str = xl_inc_col( 'Z1' );      # AA1
262           my $str = xl_inc_col( '$B1' );     # $C1
263           my $str = xl_inc_col( '$D$5' );    # $E$5
264
265   xl_dec_col($string)
266           Parameters: $string, a string in A1 format
267
268           Returns:    Decremented string in A1 format
269
270       This functions takes a cell reference string in A1 notation and
271       decrements the column. The function will also handle Excel's absolute,
272       "$", cell notation:
273
274           my $str = xl_dec_col( 'B1' );      # A1
275           my $str = xl_dec_col( 'AA1' );     # Z1
276           my $str = xl_dec_col( '$C1' );     # $B1
277           my $str = xl_dec_col( '$E$5' );    # $D$5
278

TIME AND DATE FUNCTIONS

280       Dates and times in Excel are represented by real numbers, for example
281       "Jan 1 2001 12:30 AM" is represented by the number 36892.521.
282
283       The integer part of the number stores the number of days since the
284       epoch and the fractional part stores the percentage of the day in
285       seconds.
286
287       A date or time in Excel is like any other number. To display the number
288       as a date you must apply a number format to it: Refer to the
289       "set_num_format()" method in the Excel::Writer::XLSX documentation:
290
291           $date = xl_date_list( 2001, 1, 1, 12, 30 );
292           $format->set_num_format( 'mmm d yyyy hh:mm AM/PM' );
293           $worksheet->write( 'A1', $date, $format );    # Jan 1 2001 12:30 AM
294
295       The date handling functions below are supplied for historical reasons.
296       In the current version of the module it is easier to just use the
297       "write_date_time()" function to write dates or times. See the DATES AND
298       TIME IN EXCEL section of the main Excel::Writer::XLSX documentation for
299       details.
300
301       In addition to using the functions below you must install the
302       Date::Manip and Date::Calc modules. See REQUIREMENTS and the individual
303       requirements of each functions.
304
305       For a "DateTime.pm" solution see the DateTime::Format::Excel module.
306
307   xl_date_list($years, $months, $days, $hours, $minutes, $seconds)
308           Parameters: $years:         Integer
309                       $months:        Integer [optional, default is 1]
310                       $days:          Integer [optional, default is 1]
311                       $hours:         Integer [optional, default is 0]
312                       $minutes:       Integer [optional, default is 0]
313                       $seconds:       Float   [optional, default is 0]
314
315           Returns:    A number that represents an Excel date
316                       or undef for an invalid date.
317
318           Requires:   Date::Calc
319
320       This function converts an array of data into a number that represents
321       an Excel date. All of the parameters are optional except for $years.
322
323           $date1 = xl_date_list( 2002, 1, 2 );                # 2 Jan 2002
324           $date2 = xl_date_list( 2002, 1, 2, 12 );            # 2 Jan 2002 12:00 pm
325           $date3 = xl_date_list( 2002, 1, 2, 12, 30 );        # 2 Jan 2002 12:30 pm
326           $date4 = xl_date_list( 2002, 1, 2, 12, 30, 45 );    # 2 Jan 2002 12:30:45 pm
327
328       This function can be used in conjunction with functions that parse date
329       and time strings. In fact it is used in most of the following
330       functions.
331
332   xl_parse_time($string)
333           Parameters: $string, a textual representation of a time
334
335           Returns:    A number that represents an Excel time
336                       or undef for an invalid time.
337
338       This function converts a time string into a number that represents an
339       Excel time. The following time formats are valid:
340
341           hh:mm       [AM|PM]
342           hh:mm       [AM|PM]
343           hh:mm:ss    [AM|PM]
344           hh:mm:ss.ss [AM|PM]
345
346       The meridian, AM or PM, is optional and case insensitive. A 24 hour
347       time is assumed if the meridian is omitted.
348
349           $time1 = xl_parse_time( '12:18' );
350           $time2 = xl_parse_time( '12:18:14' );
351           $time3 = xl_parse_time( '12:18:14 AM' );
352           $time4 = xl_parse_time( '1:18:14 AM' );
353
354       Time in Excel is expressed as a fraction of the day in seconds.
355       Therefore you can calculate an Excel time as follows:
356
357           $time = ( $hours * 3600 + $minutes * 60 + $seconds ) / ( 24 * 60 * 60 );
358
359   xl_parse_date($string)
360           Parameters: $string, a textual representation of a date and time
361
362           Returns:    A number that represents an Excel date
363                       or undef for an invalid date.
364
365           Requires:   Date::Manip and Date::Calc
366
367       This function converts a date and time string into a number that
368       represents an Excel date.
369
370       The parsing is performed using the "ParseDate()" function of the
371       Date::Manip module. Refer to the "Date::Manip" documentation for
372       further information about the date and time formats that can be parsed.
373       In order to use this function you will probably have to initialise some
374       "Date::Manip" variables via the "xl_parse_date_init()" function, see
375       below.
376
377           xl_parse_date_init( "TZ=GMT", "DateFormat=non-US" );
378
379           $date1 = xl_parse_date( "11/7/97" );
380           $date2 = xl_parse_date( "Friday 11 July 1997" );
381           $date3 = xl_parse_date( "10:30 AM Friday 11 July 1997" );
382           $date4 = xl_parse_date( "Today" );
383           $date5 = xl_parse_date( "Yesterday" );
384
385       Note, if you parse a string that represents a time but not a date this
386       function will add the current date. If you want the time without the
387       date you can do something like the following:
388
389           $time  = xl_parse_date( "10:30 AM" );
390           $time -= int( $time );
391
392   xl_parse_date_init("variable=value", ...)
393           Parameters: A list of Date::Manip variable strings
394
395           Returns:    A list of all the Date::Manip strings
396
397           Requires:   Date::Manip
398
399       This function is used to initialise variables required by the
400       Date::Manip module. You should call this function before calling
401       "xl_parse_date()". It need only be called once.
402
403       This function is a thin wrapper for the "Date::Manip::Date_Init()"
404       function. You can use "Date_Init()"  directly if you wish. Refer to the
405       "Date::Manip" documentation for further information.
406
407           xl_parse_date_init( "TZ=MST", "DateFormat=US" );
408           $date1 = xl_parse_date( "11/7/97" );    # November 7th 1997
409
410           xl_parse_date_init( "TZ=GMT", "DateFormat=non-US" );
411           $date1 = xl_parse_date( "11/7/97" );    # July 11th 1997
412
413   xl_decode_date_EU($string)
414           Parameters: $string, a textual representation of a date and time
415
416           Returns:    A number that represents an Excel date
417                       or undef for an invalid date.
418
419           Requires:   Date::Calc
420
421       This function converts a date and time string into a number that
422       represents an Excel date.
423
424       The date parsing is performed using the "Decode_Date_EU()" function of
425       the Date::Calc module. Refer to the "Date::Calc" documentation for
426       further information about the date formats that can be parsed. Also
427       note the following from the "Date::Calc" documentation:
428
429       "If the year is given as one or two digits only (i.e., if the year is
430       less than 100), it is mapped to the window 1970 -2069 as follows:"
431
432            0 <= $year <  70  ==>  $year += 2000;
433           70 <= $year < 100  ==>  $year += 1900;
434
435       The time portion of the string is parsed using the "xl_parse_time()"
436       function described above.
437
438       Note: the EU in the function name means that a European date format is
439       assumed if it is not clear from the string. See the first example
440       below.
441
442           $date1 = xl_decode_date_EU( "11/7/97" );                    #11 July 1997
443           $date2 = xl_decode_date_EU( "Sat 12 Sept 1998" );
444           $date3 = xl_decode_date_EU( "4:30 AM Sat 12 Sept 1998" );
445
446   xl_decode_date_US($string)
447           Parameters: $string, a textual representation of a date and time
448
449           Returns:    A number that represents an Excel date
450                       or undef for an invalid date.
451
452           Requires:   Date::Calc
453
454       This function converts a date and time string into a number that
455       represents an Excel date.
456
457       The date parsing is performed using the "Decode_Date_US()" function of
458       the Date::Calc module. Refer to the "Date::Calc" documentation for
459       further information about the date formats that can be parsed. Also
460       note the following from the "Date::Calc" documentation:
461
462       "If the year is given as one or two digits only (i.e., if the year is
463       less than 100), it is mapped to the window 1970 -2069 as follows:"
464
465            0 <= $year <  70  ==>  $year += 2000;
466           70 <= $year < 100  ==>  $year += 1900;
467
468       The time portion of the string is parsed using the "xl_parse_time()"
469       function described above.
470
471       Note: the US in the function name means that an American date format is
472       assumed if it is not clear from the string. See the first example
473       below.
474
475           $date1 = xl_decode_date_US( "11/7/97" );                 # 7 November 1997
476           $date2 = xl_decode_date_US( "Sept 12 Saturday 1998" );
477           $date3 = xl_decode_date_US( "4:30 AM Sept 12 Sat 1998" );
478
479   xl_date_1904($date)
480           Parameters: $date, an Excel date with a 1900 epoch
481
482           Returns:    an Excel date with a 1904 epoch or zero if
483                       the $date is before 1904
484
485       This function converts an Excel date based on the 1900 epoch into a
486       date based on the 1904 epoch.
487
488           $date1 = xl_date_list( 2002, 1, 13 );    # 13 Jan 2002, 1900 epoch
489           $date2 = xl_date_1904( $date1 );         # 13 Jan 2002, 1904 epoch
490
491       See also the "set_1904()" workbook method in the Excel::Writer::XLSX
492       documentation.
493

REQUIREMENTS

495       The date and time functions require functions from the Date::Manip and
496       Date::Calc modules. The required functions are "autoused" from these
497       modules so that you do not have to install them unless you wish to use
498       the date and time routines. Therefore it is possible to use the row and
499       column functions without having "Date::Manip" and "Date::Calc"
500       installed.
501
502       For more information about "autousing" refer to the documentation on
503       the "autouse" pragma.
504

BUGS

506       When using the autoused functions from "Date::Manip" and "Date::Calc"
507       on Perl 5.6.0 with "-w" you will get a warning like this:
508
509           "Subroutine xxx redefined ..."
510
511       The current workaround for this is to put "use warnings;" near the
512       beginning of your program.
513

AUTHOR

515       John McNamara jmcnamara@cpan.org
516
518       Copyright MM-MMXIX, John McNamara.
519
520       All Rights Reserved. This module is free software. It may be used,
521       redistributed and/or modified under the same terms as Perl itself.
522
523
524
525perl v5.28.1                      2019-04-07   Excel::Writer::XLSX::Utility(3)
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