Class: Spreadsheet::Excel::Reader

Inherits:
Object
  • Object
show all
Includes:
Spreadsheet::Encodings, Internals
Defined in:
lib/parseexcel/parseexcel.rb,
lib/spreadsheet/excel/reader.rb,
lib/spreadsheet/excel/reader/biff5.rb,
lib/spreadsheet/excel/reader/biff8.rb

Overview

directly. If you think you do, look at #read

Defined Under Namespace

Modules: Biff5, Biff8

Constant Summary collapse

ROW_BLOCK_OPS =
{
  :blank  => true, :boolerr  => true, :dbcell   => true, :formula => true,
  :label  => true, :labelsst => true, :mulblank => true, :mulrk   => true,
  :number => true, :rk       => true, :rstring  => true,
}

Constants included from Internals

Internals::BINARY_FORMATS, Internals::BUILTIN_FORMATS, Internals::BUILTIN_STYLES, Internals::CODEPAGES, Internals::COLOR_CODES, Internals::EIGHT_BYTE_DOUBLE, Internals::ESCAPEMENT_TYPES, Internals::FONT_ENCODINGS, Internals::FONT_FAMILIES, Internals::FONT_WEIGHTS, Internals::LEAP_ERROR, Internals::NGILA_H_FX, Internals::NGILA_V_FX, Internals::NOITCERID_TXET_FX, Internals::OPCODES, Internals::OPCODE_SIZE, Internals::ROW_HEIGHT, Internals::SEDOCPO, Internals::SEDOC_ROLOC, Internals::SEGAPEDOC, Internals::SEILIMAF_TNOF, Internals::SEITILIBISIV_TEEHSKROW, Internals::SELYTS_ENIL_REDROB_FX, Internals::SEPYT_ENILREDNU, Internals::SEPYT_TNEMEPACSE, Internals::SGNIDOCNE_TNOF, Internals::SST_CHUNKSIZE, Internals::TWIPS, Internals::UNDERLINE_TYPES, Internals::WORKSHEET_VISIBILITIES, Internals::XF_BORDER_LINE_STYLES, Internals::XF_H_ALIGN, Internals::XF_TEXT_DIRECTION, Internals::XF_V_ALIGN

Instance Method Summary collapse

Methods included from Internals

#binfmt, #opcode

Constructor Details

#initialize(opts = {}) ⇒ Reader

Returns a new instance of Reader.



26
27
28
29
30
31
32
33
34
35
36
37
# File 'lib/spreadsheet/excel/reader.rb', line 26

def initialize opts = {}
  @pos = 0
  @bigendian = opts.fetch(:bigendian) {
    [1].pack('l') != "\001\000\000\000"
  }
  @opts = opts
  @boundsheets = nil
  @current_row_block = {}
  @current_row_block_offset = nil
  @formats = {}
  BUILTIN_FORMATS.each do |key, fmt| @formats.store key, client(fmt, 'UTF-8') end
end

Instance Method Details

#decode_rk(work) ⇒ Object



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
# File 'lib/spreadsheet/excel/reader.rb', line 38

def decode_rk work
  #  Bit  Mask        Contents
  #    0  0x00000001  0 = Value not changed 1 = Value is multiplied by 100
  #    1  0x00000002  0 = Floating-point value 1 = Signed integer value
  # 31-2  0xFFFFFFFC  Encoded value
  #
  # If bit 1 is cleared, the encoded value represents the 30 most significant
  # bits of an IEEE 754 floating-point value (64-bit double precision). The
  # 34 least significant bits must be set to zero. If bit 1 is set, the
  # encoded value represents a signed 30-bit integer value. To get the
  # correct integer, the encoded value has to be shifted right arithmetically
  # by 2 bits. If bit 0 is set, the decoded value (both integer and
  # floating-point) must be divided by 100 to get the final result.
  flags, = work.unpack 'C'
  cent = flags & 1
  int  = flags & 2
  value = 0
  if int == 0
    ## remove two bits
    integer, = work.unpack 'V'
    integer &= 0xfffffffc
    value, = ("\0\0\0\0" << [integer].pack('V')).unpack EIGHT_BYTE_DOUBLE
  else
    ## I can't find a format for unpacking a little endian signed integer.
    #  'V' works for packing, but not for unpacking. But the following works
    #  fine afaics:
    unsigned, = (@bigendian ? work.reverse : work).unpack 'l'
    ## remove two bits
    value = unsigned >> 2
  end
  if cent == 1
    value /= 100.0
  end
  value
end

#encoding(codepage_id) ⇒ Object



73
74
75
76
77
78
79
80
81
# File 'lib/spreadsheet/excel/reader.rb', line 73

def encoding codepage_id
  name = CODEPAGES.fetch(codepage_id) {
    raise "Unknown Codepage 0x%04x" % codepage_id }
  if RUBY_VERSION >= '1.9'
    Encoding.find name
  else
    name
  end
end

#get_next_chunkObject



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
# File 'lib/spreadsheet/excel/reader.rb', line 82

def get_next_chunk
  pos = @pos
  if pos < @data.size
    op, len = @data[@pos,OPCODE_SIZE].unpack('v2')
    @pos += OPCODE_SIZE
    if len
      work = @data[@pos,len]
      @pos += len
      code = SEDOCPO.fetch(op, op)
      if io = @opts[:print_opcodes]
        io.puts sprintf("0x%04x/%-16s %5i: %s",
                        op, code.inspect, len, work.inspect)
      end
      [ pos, code, len + OPCODE_SIZE, work]
    end
  end
end

#in_row_block?(op, previous) ⇒ Boolean

Returns:

  • (Boolean)


99
100
101
102
103
104
105
# File 'lib/spreadsheet/excel/reader.rb', line 99

def in_row_block? op, previous
  if op == :row
    previous == op
  else
    ROW_BLOCK_OPS.include?(op)
  end
end

#memoize?Boolean

Returns:

  • (Boolean)


106
107
108
# File 'lib/spreadsheet/excel/reader.rb', line 106

def memoize?
  @opts[:memoization]
end

#postread_workbookObject



109
110
111
112
113
114
115
116
# File 'lib/spreadsheet/excel/reader.rb', line 109

def postread_workbook
  sheets = @workbook.worksheets
  sheets.each_with_index do |sheet, idx|
    offset = sheet.offset
    nxt = (nxtsheet = sheets[idx + 1]) ? nxtsheet.offset : @workbook.ole.size
    @workbook.offsets.store sheet, [offset, nxt - offset]
  end
end

#postread_worksheet(worksheet) ⇒ Object



117
118
119
120
121
122
123
124
125
126
127
128
129
# File 'lib/spreadsheet/excel/reader.rb', line 117

def postread_worksheet worksheet
   #We now have a lot of Note and NoteObjects, but they're not linked
   #So link the noteObject(text) to the note (with author, position)
   #TODO
   @noteList.each do |i|
      matching_obj = @noteObjList.select {|j| j.objID == i.objID}
      if matching_obj.length > 1
         puts "ERROR - more than one matching object ID!"
      end
      i.text = matching_obj.first.text
      worksheet.add_note i.row, i.col, i.text
   end
end

#read(io) ⇒ Object

The entry-point for reading Excel-documents. Reads the Biff-Version and loads additional reader-methods before proceeding with parsing the document.



133
134
135
136
137
138
139
# File 'lib/spreadsheet/excel/reader.rb', line 133

def read io
  setup io
  read_workbook
  @workbook.default_format = @workbook.format 0
  @workbook.changes.clear
  @workbook
end

#read_blank(worksheet, addr, work) ⇒ Object



140
141
142
143
144
145
146
147
# File 'lib/spreadsheet/excel/reader.rb', line 140

def read_blank worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  row, column, xf = work.unpack binfmt(:blank)
  set_cell worksheet, row, column, xf
end

#read_bofObject



148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
# File 'lib/spreadsheet/excel/reader.rb', line 148

def read_bof
  # Offset  Size  Contents
  #      0     2  BIFF version (always 0x0600 for BIFF8)
  #      2     2  Type of the following data: 0x0005 = Workbook globals
  #                                           0x0006 = Visual Basic module
  #                                           0x0010 = Worksheet
  #                                           0x0020 = Chart
  #                                           0x0040 = Macro sheet
  #                                           0x0100 = Workspace file
  #      4     2  Build identifier
  #      6     2  Build year
  #      8     4  File history flags
  #     12     4  Lowest Excel version that can read all records in this file
  _, @bof, _, work = get_next_chunk
  ## version and datatype are common to all Excel-Versions. Later versions
  #  have additional information such as build-id and -year (from BIFF5).
  #  These are ignored for the time being.
  version, datatype = work.unpack('v2')
  if datatype == 0x5
    @version = version
  end
end

#read_boolerr(worksheet, addr, work) ⇒ Object



170
171
172
173
174
175
176
177
178
179
# File 'lib/spreadsheet/excel/reader.rb', line 170

def read_boolerr worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6     1  Boolean or error value (type depends on the following byte)
  #      7     1  0 = Boolean value; 1 = Error code
  row, column, xf, value, error = work.unpack 'v3C2'
  set_cell worksheet, row, column, xf, error == 0 ? value > 0 : Error.new(value)
end

#read_boundsheet(work, pos, len) ⇒ Object



180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
# File 'lib/spreadsheet/excel/reader.rb', line 180

def read_boundsheet work, pos, len
  # Offset  Size  Contents
  #      0     4  Absolute stream position of the BOF record of the sheet
  #               represented by this record. This field is never encrypted
  #               in protected files.
  #      4     1  Visibility: 0x00 = Visible
  #                           0x01 = Hidden
  #                           0x02 = Strong hidden (see below)
  #      5     1  Sheet type: 0x00 = Worksheet
  #                           0x02 = Chart
  #                           0x06 = Visual Basic module
  #      6  var.  Sheet name: BIFF5/BIFF7: Byte string,
  #                           8-bit string length (➜ 3.3)
  #                           BIFF8: Unicode string, 8-bit string length (➜ 3.4)
  offset, visibility, _ = work.unpack("VC2")
  name = client read_string(work[6..-1]), @workbook.encoding
  if @boundsheets
    @boundsheets[0] += 1
    @boundsheets[2] += len
  else
    @boundsheets = [1, pos, len]
  end
  @workbook.set_boundsheets(*@boundsheets)
  @workbook.add_worksheet Worksheet.new(:name     => name,
                                        :ole      => @book,
                                        :offset   => offset,
                                        :reader   => self,
                                        :visibility => WORKSHEET_VISIBILITIES[visibility])
end

#read_codepage(work, pos, len) ⇒ Object



209
210
211
212
# File 'lib/spreadsheet/excel/reader.rb', line 209

def read_codepage work, pos, len
  codepage, _ = work.unpack 'v'
  @workbook.set_encoding encoding(codepage), pos, len
end

#read_colinfo(worksheet, work, pos, len) ⇒ Object



213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
# File 'lib/spreadsheet/excel/reader.rb', line 213

def read_colinfo worksheet, work, pos, len
  # Offset  Size  Contents
  #      0     2  Index to first column in the range
  #      2     2  Index to last column in the range
  #      4     2  Width of the columns in 1/256 of the width of the zero
  #               character, using default font (first FONT record in the
  #               file)
  #      6     2  Index to XF record (➜ 6.115) for default column formatting
  #      8     2  Option flags:
  #               Bits  Mask    Contents
  #                  0  0x0001  1 = Columns are hidden
  #               10-8  0x0700  Outline level of the columns (0 = no outline)
  #                 12  0x1000  1 = Columns are collapsed
  #     10     2  Not used
  first, last, width, xf, opts = work.unpack binfmt(:colinfo)[0..-2]
  first.upto last do |col|
    column = Column.new col, @workbook.format(xf),
                        :width         => width.to_f / 256,
                        :hidden        => (opts & 0x0001) > 0,
                        :collapsed     => (opts & 0x1000) > 0,
                        :outline_level => (opts & 0x0700) / 256
    column.worksheet = worksheet
    worksheet.columns[col] = column
  end
end

#read_dimensions(worksheet, work, pos, len) ⇒ Object



238
239
240
241
242
243
244
245
246
# File 'lib/spreadsheet/excel/reader.rb', line 238

def read_dimensions worksheet, work, pos, len
  # Offset  Size  Contents
  #      0     4  Index to first used row
  #      4     4  Index to last used row, increased by 1
  #      8     2  Index to first used column
  #     10     2  Index to last used column, increased by 1
  #     12     2  Not used
  worksheet.set_dimensions work.unpack(binfmt(:dimensions)), pos, len
end

#read_font(work, pos, len) ⇒ Object



247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
# File 'lib/spreadsheet/excel/reader.rb', line 247

def read_font work, pos, len
  # Offset  Size  Contents
  #      0     2  Height of the font (in twips = 1/20 of a point)
  #      2     2  Option flags:
  #               Bit  Mask    Contents
  #                 0  0x0001  1 = Characters are bold (redundant, see below)
  #                 1  0x0002  1 = Characters are italic
  #                 2  0x0004  1 = Characters are underlined
  #                                (redundant, see below)
  #                 3  0x0008  1 = Characters are struck out
  #                 4  0x0010  1 = Characters are outlined (djberger)
  #                 5  0x0020  1 = Characters are shadowed (djberger)
  #      4     2  Colour index (➜ 6.70)
  #      6     2  Font weight (100-1000). Standard values are
  #                           0x0190 (400) for normal text and
  #                           0x02bc (700) for bold text.
  #      8     2  Escapement type: 0x0000 = None
  #                                0x0001 = Superscript
  #                                0x0002 = Subscript
  #     10     1  Underline type: 0x00 = None
  #                               0x01 = Single
  #                               0x02 = Double
  #                               0x21 = Single accounting
  #                               0x22 = Double accounting
  #     11     1  Font family:
  #               0x00 = None (unknown or don't care)
  #               0x01 = Roman (variable width, serifed)
  #               0x02 = Swiss (variable width, sans-serifed)
  #               0x03 = Modern (fixed width, serifed or sans-serifed)
  #               0x04 = Script (cursive)
  #               0x05 = Decorative (specialised,
  #                                  for example Old English, Fraktur)
  #     12     1  Character set: 0x00 =   0 = ANSI Latin
  #                              0x01 =   1 = System default
  #                              0x02 =   2 = Symbol
  #                              0x4d =  77 = Apple Roman
  #                              0x80 = 128 = ANSI Japanese Shift-JIS
  #                              0x81 = 129 = ANSI Korean (Hangul)
  #                              0x82 = 130 = ANSI Korean (Johab)
  #                              0x86 = 134 = ANSI Chinese Simplified GBK
  #                              0x88 = 136 = ANSI Chinese Traditional BIG5
  #                              0xa1 = 161 = ANSI Greek
  #                              0xa2 = 162 = ANSI Turkish
  #                              0xa3 = 163 = ANSI Vietnamese
  #                              0xb1 = 177 = ANSI Hebrew
  #                              0xb2 = 178 = ANSI Arabic
  #                              0xba = 186 = ANSI Baltic
  #                              0xcc = 204 = ANSI Cyrillic
  #                              0xde = 222 = ANSI Thai
  #                              0xee = 238 = ANSI Latin II (Central European)
  #                              0xff = 255 = OEM Latin I
  #     13     1  Not used
  #     14  var.  Font name:
  #               BIFF5/BIFF7: Byte string, 8-bit string length (➜ 3.3)
  #               BIFF8: Unicode string, 8-bit string length (➜ 3.4)
  name = client read_string(work[14..-1]), @workbook.encoding
  font = Font.new name
  size, opts, color, font.weight, escapement, underline,
    family, encoding = work.unpack binfmt(:font)
  font.size       = size / TWIPS
  font.italic     = opts & 0x0002
  font.strikeout  = opts & 0x0008
  font.outline    = opts & 0x0010
  font.shadow     = opts & 0x0020
  font.color      = COLOR_CODES[color] || :text
  font.escapement = ESCAPEMENT_TYPES[escapement]
  font.underline  = UNDERLINE_TYPES[underline]
  font.family     = FONT_FAMILIES[family]
  font.encoding   = FONT_ENCODINGS[encoding]
  @workbook.add_font font
end

#read_format(work, pos, len) ⇒ Object



318
319
320
321
322
323
324
325
326
# File 'lib/spreadsheet/excel/reader.rb', line 318

def read_format work, pos, len
  # Offset  Size  Contents
  #      0     2  Format index used in other records
  #      2  var.  Number format string
  #               (Unicode string, 16-bit string length, ➜ 3.4)
  idx, = work.unpack 'v'
  value = read_string work[2..-1], 2
  @formats.store idx, client(value, @workbook.encoding)
end

#read_formula(worksheet, addr, work) ⇒ Object



327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
# File 'lib/spreadsheet/excel/reader.rb', line 327

def read_formula worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6     8  Result of the formula. See below for details.
  #     14     2  Option flags:
  #               Bit  Mask    Contents
  #                 0  0x0001  1 = Recalculate always
  #                 1  0x0002  1 = Calculate on open
  #                 3  0x0008  1 = Part of a shared formula
  #     16     4  Not used
  #     20  var.  Formula data (RPN token array, ➜ 4)
  #               Offset  Size  Contents
  #                    0     2  Size of the following formula data (sz)
  #                    2    sz  Formula data (RPN token array)
  #               [2+sz]  var.  (optional) Additional data for specific tokens
  #                             (➜ 4.1.6, for example tArray token, ➜ 4.8.7)
  #
  # Result of the Formula
  # Dependent on the type of value the formula returns, the result field has
  # the following format:
  #
  # Result is a numeric value:
  # Offset  Size  Contents
  #      0     8  IEEE 754 floating-point value (64-bit double precision)
  #
  # Result is a string (the string follows in a STRING record, ➜ 6.98):
  # Offset  Size  Contents
  #      0     1  0x00 (identifier for a string value)
  #      1     5  Not used
  #      6     2  0xffff
  # Note: In BIFF8 the string must not be empty. For empty cells there is a
  # special identifier defined (see below).
  #
  # Result is a Boolean value:
  # Offset  Size  Contents
  #      0     1  0x01 (identifier for a Boolean value)
  #      1     1  Not used
  #      2     1  0 = FALSE, 1 = TRUE
  #      3     3  Not used
  #      6     2  0xffff
  #
  # Result is an error value:
  # Offset  Size  Contents
  #      0     1  0x02 (identifier for an error value)
  #      1     1  Not used
  #      2     1  Error code (➜ 3.7)
  #      3     3  Not used
  #      6     2  0xffff
  #
  # Result is an empty cell (BIFF8), for example an empty string:
  # Offset  Size  Contents
  #      0     1  0x03 (identifier for an empty cell)
  #      1     5  Not used
  #      6     2  0xffff
  row, column, xf, rtype, rval, rcheck, opts = work.unpack 'v3CxCx3v2'
  formula = Formula.new
  formula.shared = (opts & 0x08) > 0
  formula.data = work[20..-1]
  if rcheck != 0xffff || rtype > 3
    value, = work.unpack 'x6E'
    unless value
      # on architectures where sizeof(double) > 8
      value, = work.unpack 'x6e'
    end
    formula.value = value
  elsif rtype == 0
    pos, op, len, work = get_next_chunk
    if op == :sharedfmla
      ## TODO: formula-support in 0.8.0
      pos, op, len, work = get_next_chunk
    end
    if op == :string
      formula.value = client read_string(work, 2), @workbook.encoding
    else
      warn "String Value expected after Formula, but got #{op}"
      formula.value = Error.new 0x2a
      @pos = pos
    end
  elsif rtype == 1
    formula.value = rval > 0
  elsif rtype == 2
    formula.value = Error.new rval
  else
    # leave the Formula value blank
  end
  set_cell worksheet, row, column, xf, formula
end

#read_guts(worksheet, work, pos, len) ⇒ Object



951
952
953
954
955
956
957
958
959
960
961
962
# File 'lib/spreadsheet/excel/reader.rb', line 951

def read_guts worksheet, work, pos, len
  # Offset Size Contents
  #      0    2 Width of the area to display row outlines (left of the sheet), in pixel
  #      2    2 Height of the area to display column outlines (above the sheet), in pixel
  #      4    2 Number of visible row outline levels (used row levels + 1; or 0, if not used)
  #      6    2 Number of visible column outline levels (used column levels + 1; or 0, if not used)
  width, height, row_level, col_level = work.unpack 'v4'
  worksheet.guts[:width] = width
  worksheet.guts[:height] = height
  worksheet.guts[:row_level] = row_level
  worksheet.guts[:col_level] = col_level
end


416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
# File 'lib/spreadsheet/excel/reader.rb', line 416

def read_hlink worksheet, work, pos, len
  # 6.53.1 Common Record Contents
  # Offset  Size  Contents
  #      0     8  Cell range address of all cells containing this hyperlink
  #               (➜ 3.13.1)
  #      8    16  GUID of StdLink:
  #               D0 C9 EA 79 F9 BA CE 11 8C 82 00 AA 00 4B A9 0B
  #               (79EAC9D0-BAF9-11CE-8C82-00AA004BA90B)
  #     24     4  Unknown value: 0x00000002
  #     28     4  Option flags (see below)
  #               Bit  Mask        Contents
  #                 0  0x00000001  0 = No link extant
  #                                1 = File link or URL
  #                 1  0x00000002  0 = Relative file path
  #                                1 = Absolute path or URL
  #           2 and 4  0x00000014  0 = No description
  #                                1 (both bits) = Description
  #                 3  0x00000008  0 = No text mark
  #                                1 = Text mark
  #                 7  0x00000080  0 = No target frame
  #                                1 = Target frame
  #                 8  0x00000100  0 = File link or URL
  #                                1 = UNC path (incl. server name)
  #--------------------------------------------------------------------------
  #   [32]     4  (optional, see option flags) Character count of description
  #               text, including trailing zero word (dl)
  #   [36]  2∙dl  (optional, see option flags) Character array of description
  #               text, no Unicode string header, always 16-bit characters,
  #               zero-terminated
  #--------------------------------------------------------------------------
  # [var.]     4  (optional, see option flags) Character count of target
  #               frame, including trailing zero word (fl)
  # [var.]  2∙fl  (optional, see option flags) Character array of target
  #               frame, no Unicode string header, always 16-bit characters,
  #               zero-terminated
  #--------------------------------------------------------------------------
  #   var.  var.  Special data (➜ 6.53.2 and following)
  #--------------------------------------------------------------------------
  # [var.]     4  (optional, see option flags) Character count of the text
  #               mark, including trailing zero word (tl)
  # [var.]  2∙tl  (optional, see option flags) Character array of the text
  #               mark without “#” sign, no Unicode string header, always
  #               16-bit characters, zero-terminated
  firstrow, lastrow, firstcol, lastcol, _, opts = work.unpack 'v4H32x4V'
  has_link = opts & 0x0001
  desc     = opts & 0x0014
  textmark = opts & 0x0008
  target   = opts & 0x0080
  unc      = opts & 0x0100
  link = Link.new
  _, description = nil
  pos = 32
  if desc > 0
    description, pos = read_hlink_string work, pos
    link << description
  end
  if target > 0
    link.target_frame, pos = read_hlink_string work, pos
  end
  if unc > 0
    # 6.53.4 Hyperlink to a File with UNC (Universal Naming Convention) Path
    # These data fields are for UNC paths containing a server name (for
    # instance “\\server\path\file.xls”). The lower 9 bits of the option
    # flags field must be 1.x00x.xx112.
    # Offset  Size  Contents
    #      0     4  Character count of the UNC,
    #               including trailing zero word (fl)
    #      4  2∙fl  Character array of the UNC, no Unicode string header,
    #               always 16-bit characters, zeroterminated.
    link.url, pos = read_hlink_string work, pos
  elsif has_link > 0
    uid, = work.unpack "x#{pos}H32"
    pos += 16
    if uid == "e0c9ea79f9bace118c8200aa004ba90b"
      # 6.53.2 Hyperlink containing a URL (Uniform Resource Locator)
      # These data fields occur for links which are not local files or files
      # in the local network (for instance HTTP and FTP links and e-mail
      # addresses). The lower 9 bits of the option flags field must be
      # 0.x00x.xx112 (x means optional, depending on hyperlink content). The
      # GUID could be used to distinguish a URL from a file link.
      # Offset  Size  Contents
      #      0    16  GUID of URL Moniker:
      #               E0 C9 EA 79 F9 BA CE 11 8C 82 00 AA 00 4B A9 0B
      #               (79EAC9E0-BAF9-11CE-8C82-00AA004BA90B)
      #     16     4  Size of character array of the URL, including trailing
      #               zero word (us). There are us/2-1 characters in the
      #               following string.
      #     20    us  Character array of the URL, no Unicode string header,
      #               always 16-bit characters, zeroterminated
      size, = work.unpack "x#{pos}V"
      pos += 4
      data = work[pos, size].chomp "\000\000"
      link.url = client data
      pos += size
    else
      # 6.53.3 Hyperlink to a Local File
      # These data fields are for links to files on local drives. The path of
      # the file can be complete with drive letter (absolute) or relative to
      # the location of the workbook. The lower 9 bits of the option flags
      # field must be 0.x00x.xxx12. The GUID could be used to distinguish a
      # URL from a file link.
      # Offset  Size  Contents
      #      0    16  GUID of File Moniker:
      #               03 03 00 00 00 00 00 00 C0 00 00 00 00 00 00 46
      #               (00000303-0000-0000-C000-000000000046)
      #     16     2  Directory up-level count. Each leading “..\” in the
      #               file link is deleted and increases this counter.
      #     18     4  Character count of the shortened file path and name,
      #               including trailing zero byte (sl)
      #     22    sl  Character array of the shortened file path and name in
      #               8.3-DOS-format. This field can be filled with a long
      #               file name too. No Unicode string header, always 8-bit
      #               characters, zeroterminated.
      #  22+sl    24  Unknown byte sequence:
      #               FF FF AD DE 00 00 00 00
      #               00 00 00 00 00 00 00 00
      #               00 00 00 00 00 00 00 00
      #  46+sl     4  Size of the following file link field including string
      #               length field and additional data field (sz). If sz is
      #               zero, nothing will follow (except a text mark).
      # [50+sl]    4  (optional) Size of character array of the extended file
      #               path and name (xl). There are xl/2 characters in the
      #               following string.
      # [54+sl]    2  (optional) Unknown byte sequence: 03 00
      # [56+sl]   xl  (optional) Character array of the extended file path
      #               and name (xl), no Unicode string header, always 16-bit
      #               characters, not zero-terminated
      uplevel, count = work.unpack "x#{pos}vV"
      pos += 6
      # TODO: short file path may have any of the OEM encodings. Find out which
      #       and use the #client method to convert the encoding.
      prefix = internal('..\\', 'UTF-8') * uplevel
      link.dos = link.url = prefix << work[pos, count].chomp("\000")
      pos += count + 24
      total, size = work.unpack "x#{pos}V2"
      pos += 10
      if total > 0
        link.url = client work[pos, size]
        pos += size
      end
    end
  else
    # 6.53.5 Hyperlink to the Current Workbook
    # In this case only the text mark field is present (optional with
    # description).
    # Example: The URL “#Sheet2!B1:C2” refers to the given range in the
    # current workbook.
    # The lower 9 bits of the option flags field must be 0.x00x.1x002.
  end
  if textmark > 0
    link.fragment, _ = read_hlink_string work, pos
  end
  if link.empty?
    link << link.href
  end
  firstrow.upto lastrow do |row|
    firstcol.upto lastcol do |col|
      worksheet.add_link row, col, link
    end
  end
end


577
578
579
580
581
582
583
584
# File 'lib/spreadsheet/excel/reader.rb', line 577

def read_hlink_string work, pos
  count, = work.unpack "x#{pos}V"
  len = count * 2
  pos += 4
  data = work[pos, len].chomp "\000\000"
  pos += len
  [client(data, 'UTF-16LE'), pos]
end

#read_index(worksheet, work, pos, len) ⇒ Object



585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
# File 'lib/spreadsheet/excel/reader.rb', line 585

def read_index worksheet, work, pos, len
  # Offset  Size  Contents
  #      0     4  Not used
  #      4     4  Index to first used row (rf, 0-based)
  #      8     4  Index to first row of unused tail of sheet
  #               (rl, last used row + 1, 0-based)
  #     12     4  Absolute stream position of the
  #               DEFCOLWIDTH record (➜ 6.29) of the current sheet. If this
  #               record does not exist, the offset points to the record at
  #               the position where the DEFCOLWIDTH record would occur.
  #     16  4∙nm  Array of nm absolute stream positions to the
  #               DBCELL record (➜ 6.26) of each Row Block
  # TODO: use the index if it exists
  # _, first_used, first_unused, defcolwidth, *indices = work.unpack 'V*'
end

#read_label(worksheet, addr, work) ⇒ Object

Offset Size Contents

 0     4  Not used
 4     4  Index to first used row (rf, 0-based)
 8     4  Index to first row of unused tail of sheet
          (rl, last used row + 1, 0-based)
12     4  Absolute stream position of the
          DEFCOLWIDTH record (➜ 6.29) of the current sheet. If this
          record does not exist, the offset points to the record at
          the position where the DEFCOLWIDTH record would occur.
16  4∙nm  Array of nm absolute stream positions to the
          DBCELL record (➜ 6.26) of each Row Block

TODO: use the index if it exists _, first_used, first_unused, defcolwidth, *indices = work.unpack ‘V*’



600
601
602
603
604
605
606
607
608
609
# File 'lib/spreadsheet/excel/reader.rb', line 600

def read_label worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6  var.  Unicode string, 16-bit string length (➜ 3.4)
  row, column, xf = work.unpack 'v3'
  value = client read_string(work[6..-1], 2), @workbook.encoding
  set_cell worksheet, row, column, xf, value
end

#read_labelsst(worksheet, addr, work) ⇒ Object



610
611
612
613
614
615
616
617
618
# File 'lib/spreadsheet/excel/reader.rb', line 610

def read_labelsst worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6     4  Index into SST record (➜ 6.96)
  row, column, xf, index = work.unpack binfmt(:labelsst)
  set_cell worksheet, row, column, xf, worksheet.shared_string(index)
end

#read_merged_cells(worksheet, work, pos, len) ⇒ Object



778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
# File 'lib/spreadsheet/excel/reader.rb', line 778

def read_merged_cells worksheet, work, pos, len
  # This record contains the addresses of merged cell ranges in the current sheet.
  # Record MERGEDCELLS, BIFF8:
  # Offset  Size  Contents
  # 0	      var.	Cell range address list with merged ranges (➜ 2.5.15)
  # If the record size exceeds the limit, it is not continued with a CONTINUE record,
  # but another self-contained MERGEDCELLS record is started. The limit of 8224 bytes
  # per record results in a maximum number of 1027 merged ranges.

  worksheet.merged_cells.push(*read_range_address_list(work, len))
  #
  # A cell range address list consists of a field with the number of ranges and the list
  # of the range addresses.
  # Cell range address list, BIFF2-BIFF8:
  # Offset  Size          Contents
  # 0       2             Number of following cell range addresses (nm)
  # 2	      6∙nm or 8∙nm  List of nm cell range addresses (➜ 2.5.14)
  #
end

#read_mulblank(worksheet, addr, work) ⇒ Object



619
620
621
622
623
624
625
626
627
628
# File 'lib/spreadsheet/excel/reader.rb', line 619

def read_mulblank worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to first column (fc)
  #      4  2∙nc  List of nc=lc-fc+1 16-bit indexes to XF records (➜ 6.115)
  # 4+2∙nc     2  Index to last column (lc)
  row, column, *xfs = work.unpack 'v*'
  xfs.pop #=> last_column
  xfs.each_with_index do |xf, idx| set_cell worksheet, row, column + idx, xf end
end

#read_mulrk(worksheet, addr, work) ⇒ Object



629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
# File 'lib/spreadsheet/excel/reader.rb', line 629

def read_mulrk worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to first column (fc)
  #      4  6∙nc  List of nc=lc-fc+1 XF/RK structures. Each XF/RK contains:
  #               Offset  Size  Contents
  #                    0     2  Index to XF record (➜ 6.115)
  #                    2     4  RK value (➜ 3.6)
  # 4+6∙nc     2  Index to last column (lc)
  row, column = work.unpack 'v2'
  4.step(work.size - 6, 6) do |idx|
    xf, = work.unpack "x#{idx}v"
    set_cell worksheet, row, column, xf, decode_rk(work[idx + 2, 4])
    column += 1
  end
end

#read_note(worksheet, work, pos, len) ⇒ Object



1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
# File 'lib/spreadsheet/excel/reader.rb', line 1142

def read_note worksheet, work, pos, len
  #puts "\nDEBUG: found a note record in read_worksheet\n"
  row, col, _, _objID, _objAuthLen, _objAuthLenFmt = work.unpack('v5C')
  if (_objAuthLenFmt == 0)
     #puts "Picking compressed charset"
     #Skip to offset due to 'v5C' used above
     _objAuth = work.unpack('@11C*')
  elsif (_objAuthLenFmt == 1)
     #puts "Picking uncompressed charset"
     _objAuth = work.unpack('@11S*')
  end
  _objAuth = _objAuth.pack('C*')
  @note = Note.new
  @note.length = len
  @note.row    = row
  @note.col    = col
  @note.author = _objAuth
  @note.objID  = _objID
  #Pop it on the list to be sorted in postread_worksheet
  @noteList << @note
end

#read_number(worksheet, addr, work) ⇒ Object



645
646
647
648
649
650
651
652
653
# File 'lib/spreadsheet/excel/reader.rb', line 645

def read_number worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6     8  IEEE 754 floating-point value (64-bit double precision)
  row, column, xf, value = work.unpack binfmt(:number)
  set_cell worksheet, row, column, xf, value
end

#read_pagesetup(worksheet, work, pos, len) ⇒ Object



941
942
943
944
945
946
947
948
949
# File 'lib/spreadsheet/excel/reader.rb', line 941

def read_pagesetup(worksheet, work, pos, len)
  worksheet.pagesetup.delete_if { true }
  data = work.unpack(binfmt(:pagesetup))
  worksheet.pagesetup[:orientation] = data[5] == 0 ? :landscape : :portrait
  worksheet.pagesetup[:adjust_to] = data[1]

  worksheet.pagesetup[:orig_data] = data
  # TODO: add options acording to specification
end

#read_rk(worksheet, addr, work) ⇒ Object



654
655
656
657
658
659
660
661
662
# File 'lib/spreadsheet/excel/reader.rb', line 654

def read_rk worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6     4  RK value (➜ 3.6)
  row, column, xf = work.unpack 'v3'
  set_cell worksheet, row, column, xf, decode_rk(work[6,4])
end

#read_row(worksheet, addr) ⇒ Object



663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
# File 'lib/spreadsheet/excel/reader.rb', line 663

def read_row worksheet, addr
  row = addr[:index]
  @current_row_block.fetch [worksheet, row] do
    @current_row_block.clear
    cells = @current_row_block[[worksheet, row]] = Row.new(nil, row)
    @pos = addr[:offset]
    found = false
    while tuple = get_next_chunk
      pos, op, _, work = tuple
      case op
      when :eof      # ●  EOF ➜ 6.36 - we should only get here if there is just
                     #                 one Row-Block
        @pos = pos
        return cells
      when :dbcell   # ○  DBCELL Stream offsets to the cell records of each row
        return cells
      when :row      # ○○ Row Blocks ➜ 5.7
                     # ●  ROW ➜ 6.83
        # ignore, we already did these in read_worksheet
        return cells if found
      when :blank    # BLANK ➜ 6.7
        found = true
        read_blank worksheet, addr, work
      when :boolerr  # BOOLERR ➜ 6.10
        found = true
        read_boolerr worksheet, addr, work
      when 0x0002    # INTEGER ➜ 6.56 (BIFF2 only)
        found = true
        # TODO: implement for BIFF2 support
      when :formula  # FORMULA ➜ 6.46
        found = true
        read_formula worksheet, addr, work
      when :label    # LABEL ➜ 6.59 (BIFF2-BIFF7)
        found = true
        read_label worksheet, addr, work
      when :labelsst # LABELSST ➜ 6.61 (BIFF8 only)
        found = true
        read_labelsst worksheet, addr, work
      when :mulblank # MULBLANK ➜ 6.64 (BIFF5-BIFF8)
        found = true
        read_mulblank worksheet, addr, work
      when :mulrk    # MULRK ➜ 6.65 (BIFF5-BIFF8)
        found = true
        read_mulrk worksheet, addr, work
      when :number   # NUMBER ➜ 6.68
        found = true
        read_number worksheet, addr, work
      when :rk       # RK ➜ 6.82 (BIFF3-BIFF8)
        found = true
        read_rk worksheet, addr, work
      when :rstring  # RSTRING ➜ 6.84 (BIFF5/BIFF7)
        found = true
        read_rstring worksheet, addr, work
      end
    end
    cells
  end
end

#read_rstring(worksheet, addr, work) ⇒ Object



721
722
723
724
725
726
727
728
729
730
731
732
# File 'lib/spreadsheet/excel/reader.rb', line 721

def read_rstring worksheet, addr, work
  # Offset  Size  Contents
  #      0     2  Index to row
  #      2     2  Index to column
  #      4     2  Index to XF record (➜ 6.115)
  #      6    sz  Unformatted Unicode string, 16-bit string length (➜ 3.4)
  #   6+sz     2  Number of Rich-Text formatting runs (rt)
  #   8+sz  4·rt  List of rt formatting runs (➜ 3.2)
  row, column, xf = work.unpack 'v3'
  value = client read_string(work[6..-1], 2), @workbook.encoding
  set_cell worksheet, row, column, xf, value
end

#read_sheet_protection(worksheet, op, data) ⇒ Object



1163
1164
1165
1166
1167
1168
1169
1170
# File 'lib/spreadsheet/excel/reader.rb', line 1163

def read_sheet_protection worksheet, op, data
  case op
  when :protect
    worksheet.protect! if data.unpack('v').first == 1
  when :password
    worksheet.password_hash = data.unpack('v').first
  end
end

#read_style(work, pos, len) ⇒ Object



963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
# File 'lib/spreadsheet/excel/reader.rb', line 963

def read_style work, pos, len
  # User-Defined Cell Styles:
  # Offset  Size  Contents
  #      0     2  Bit   Mask    Contents
  #               11-0  0x0fff  Index to style XF record (➜ 6.115)
  #                 15  0x8000  Always 0 for user-defined styles
  #      2  var.  BIFF2-BIFF7:  Non-empty byte string,
  #                             8-bit string length (➜ 3.3)
  #               BIFF8:        Non-empty Unicode string,
  #                             16-bit string length (➜ 3.4)
  #
  # Built-In Cell Styles
  # Offset  Size  Contents
  #      0     2  Bit   Mask    Contents
  #               11-0  0x0FFF  Index to style XF record (➜ 6.115)
  #                 15  0x8000  Always 1 for built-in styles
  #      2     1  Identifier of the built-in cell style:
  #               0x00 = Normal
  #               0x01 = RowLevel_lv (see next field)
  #               0x02 = ColLevel_lv (see next field)
  #               0x03 = Comma
  #               0x04 = Currency
  #               0x05 = Percent
  #               0x06 = Comma [0] (BIFF4-BIFF8)
  #               0x07 = Currency [0] (BIFF4-BIFF8)
  #               0x08 = Hyperlink (BIFF8)
  #               0x09 = Followed Hyperlink (BIFF8)
  #      3     1  Level for RowLevel or ColLevel style (zero-based, lv),
  #               FFH otherwise
  flags, = work.unpack 'v'
  xf_idx = flags & 0x0fff
  xf = @workbook.format xf_idx
  builtin = flags & 0x8000
  if builtin == 0
    xf.name = client read_string(work[2..-1], 2), @workbook.encoding
  else
    id, level = work.unpack 'x2C2'
    if name = BUILTIN_STYLES[id]
      name.sub '_lv', "_#{level.to_s}"
      xf.name = client name, 'UTF-8'
    end
  end
end

#read_window2(worksheet, work, pos, len) ⇒ Object



733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
# File 'lib/spreadsheet/excel/reader.rb', line 733

def read_window2 worksheet, work, pos, len
  # This record contains additional settings for the document window
  # (BIFF2-BIFF4) or for the window of a specific worksheet (BIFF5-BIFF8).
  # It is part of the Sheet View Settings Block (➜ 4.5).
  # Offset  Size  Contents
  #      0     2  Option flags:
  #               Bits  Mask    Contents
  #                  0  0x0001  0 = Show formula results
  #                             1 = Show formulas
  #                  1  0x0002  0 = Do not show grid lines
  #                             1 = Show grid lines
  #                  2  0x0004  0 = Do not show sheet headers
  #                             1 = Show sheet headers
  #                  3  0x0008  0 = Panes are not frozen
  #                             1 = Panes are frozen (freeze)
  #                  4  0x0010  0 = Show zero values as empty cells
  #                             1 = Show zero values
  #                  5  0x0020  0 = Manual grid line colour
  #                             1 = Automatic grid line colour
  #                  6  0x0040  0 = Columns from left to right
  #                             1 = Columns from right to left
  #                  7  0x0080  0 = Do not show outline symbols
  #                             1 = Show outline symbols
  #                  8  0x0100  0 = Keep splits if pane freeze is removed
  #                             1 = Remove splits if pane freeze is removed
  #                  9  0x0200  0 = Sheet not selected
  #                             1 = Sheet selected (BIFF5-BIFF8)
  #                 10  0x0400  0 = Sheet not active
  #                             1 = Sheet active (BIFF5-BIFF8)
  #                 11  0x0800  0 = Show in normal view
  #                             1 = Show in page break preview (BIFF8)
  #      2     2  Index to first visible row
  #      4     2  Index to first visible column
  #      6     2  Colour index of grid line colour (➜ 5.74).
  #               Note that in BIFF2-BIFF5 an RGB colour is written instead.
  #      8     2  Not used
  #     10     2  Cached magnification factor in page break preview (in percent)
  #               0 = Default (60%)
  #     12     2  Cached magnification factor in normal view (in percent)
  #               0 = Default (100%)
  #     14     4  Not used
  flags, _ = work.unpack 'v'
  worksheet.selected = flags & 0x0200 > 0
end

#read_workbookObject



798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
# File 'lib/spreadsheet/excel/reader.rb', line 798

def read_workbook
  previous_op = nil
  while tuple = get_next_chunk
    pos, op, len, work = tuple
    case op
    when @bof, :bof  # ●  BOF Type = worksheet (➜ 6.8)
      return
    when :eof        # ●  EOF ➜ 6.36
      postread_workbook
      return
    when :datemode   # ○  DATEMODE ➜ 6.25
      flag, _ = work.unpack 'v'
      if flag == 1
        @workbook.date_base = DateTime.new 1904, 1, 1
      else
        @workbook.date_base = DateTime.new 1899, 12, 31
      end
    when :continue   # ○  CONTINUE ➜ 6.22
      case previous_op
      when :sst      # ●  SST ➜ 6.96
        continue_sst work, pos, len
      end
    when :codepage   # ○  CODEPAGE ➜ 6.17
      read_codepage work, pos, len
    when :boundsheet # ●● BOUNDSHEET ➜ 6.12
      read_boundsheet work, pos, len
    when :xf         # ●● XF ➜ 6.115
      read_xf work, pos, len
    when :sst        # ○  Shared String Table ➜ 5.11
                     # ●  SST ➜ 6.96
      read_sst work, pos, len
      # TODO: implement memory-efficient sst handling, possibly in conjunction
      #       with EXTSST
    when :extsst     # ●  EXTSST ➜ 6.40
      read_extsst work, pos, len
    when :style      # ●● STYLE ➜ 6.99
      read_style work, pos, len
    when :format     # ○○ FORMAT (Number Format) ➜ 6.45
      read_format work, pos, len
    when :font       # ●● FONT ➜ 6.43
      read_font work, pos, len
    end
    previous_op = op unless op == :continue
  end
end

#read_worksheet(worksheet, offset) ⇒ Object



843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
# File 'lib/spreadsheet/excel/reader.rb', line 843

def read_worksheet worksheet, offset
  @pos = offset
  @detected_rows = {}
  @noteObjList = []
  @noteList = []
  previous = nil
  while tuple = get_next_chunk
    pos, op, len, work = tuple
    if((offset = @current_row_block_offset) && !in_row_block?(op, previous))
      @current_row_block_offset = nil
      offset[1] = pos - offset[0]
    end
    case op
    when :eof        # ●  EOF ➜ 6.36
      postread_worksheet worksheet
      return
    #when :uncalced   # ○  UNCALCED ➜ 6.104
      # TODO: Formula support. Values were not calculated before saving
      #warn <<-EOS
      #  Some fields containig formulas were saved without a computed value.
      #  Support Spreadsheet::Excel by implementing formula-calculations!
      #EOS
    #when :index      # ○  INDEX ➜ 5.7 (Row Blocks), ➜ 6.55
      # TODO: if there are changes in rows, omit index when writing
      #read_index worksheet, work, pos, len
    when :guts       #    GUTS      5.53
      read_guts worksheet, work, pos, len
    when :colinfo    # ○○ COLINFO ➜ 6.18
      read_colinfo worksheet, work, pos, len
    when :dimensions # ●  DIMENSIONS ➜ 6.31
      read_dimensions worksheet, work, pos, len
    when :row        # ○○ Row Blocks ➜ 5.7
                     # ●  ROW ➜ 6.83
      set_row_address worksheet, work, pos, len
    when :hlink
      read_hlink worksheet, work, pos, len
    when :window2
      read_window2 worksheet, work, pos, len
    when :mergedcells # ○○ MERGEDCELLS	➜ 5.67
      read_merged_cells worksheet, work, pos, len
    when :protect, :password
      read_sheet_protection worksheet, op, work
    when :note # a note references an :obj
      read_note worksheet, work, pos, len
    when :obj # it contains the author in the NTS structure
      _ft, _cb, _ot, _objID = work.unpack('v4')
      if _ot == 0x19
        #puts "\nDEBUG: found Note Obj record"
        @noteObject         = NoteObject.new
        @noteObject.objID   = _objID
      end
      #p work
    when :drawing # this can be followed by txo in case of a note
      if previous == :obj
        #puts "\nDEBUG: found MsDrawing record"
        #p work
      end
    when :txo # this contains the length of the note text
      if previous == :drawing
        #puts "\nDEBUG: found TxO record"
        #p work
      end
    when :continue # this contains the actual note text
      if previous == :txo
        #puts "\nDEBUG: found Continue record"
        continueFmt = work.unpack('C')
        if (continueFmt.first == 0)
           #puts "Picking compressed charset"
           #Skip to offset due to 'v5C' used above
           _text = work.unpack('@1C*')
           @noteObject.text = _text.pack('C*')
        elsif (continueFmt.first == 1)
           #puts "Picking uncompressed charset"
           _text = work.unpack('@1S*')
           @noteObject.text = _text.pack('U*')
        end
        @noteObjList << @noteObject
      end
    when :pagesetup
      read_pagesetup(worksheet, work, pos, len)
    when :leftmargin
      worksheet.margins[:left] = work.unpack(binfmt(:margin))[0]
    when :rightmargin
      worksheet.margins[:right] = work.unpack(binfmt(:margin))[0]
    when :topmargin
      worksheet.margins[:top] = work.unpack(binfmt(:margin))[0]
    when :bottommargin
      worksheet.margins[:bottom] = work.unpack(binfmt(:margin))[0]
    else
      if ROW_BLOCK_OPS.include?(op)
        set_missing_row_address worksheet, work, pos, len
      end
    end
    previous = op 
    #previous = op unless op == :continue
  end
end

#read_xf(work, pos, len) ⇒ Object



1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
# File 'lib/spreadsheet/excel/reader.rb', line 1006

def read_xf work, pos, len
  # Offset  Size  Contents
  #      0     2  Index to FONT record (➜ 6.43)
  #      2     2  Index to FORMAT record (➜ 6.45)
  #      4     2   Bit  Mask    Contents
  #                2-0  0x0007  XF_TYPE_PROT – XF type, cell protection
  #                             Bit  Mask  Contents
  #                               0  0x01  1 = Cell is locked
  #                               1  0x02  1 = Formula is hidden
  #                               2  0x04  0 = Cell XF; 1 = Style XF
  #               15-4  0xfff0  Index to parent style XF
  #                             (always 0xfff in style XFs)
  #      6     1   Bit  Mask    Contents
  #                2-0  0x07    XF_HOR_ALIGN – Horizontal alignment
  #                             Value  Horizontal alignment
  #                             0x00   General
  #                             0x01   Left
  #                             0x02   Centred
  #                             0x03   Right
  #                             0x04   Filled
  #                             0x05   Justified (BIFF4-BIFF8X)
  #                             0x06   Centred across selection
  #                                    (BIFF4-BIFF8X)
  #                             0x07   Distributed (BIFF8X)
  #                  3  0x08    1 = Text is wrapped at right border
  #                6-4  0x70    XF_VERT_ALIGN – Vertical alignment
  #                             Value  Vertical alignment
  #                             0x00   Top
  #                             0x01   Centred
  #                             0x02   Bottom
  #                             0x03   Justified (BIFF5-BIFF8X)
  #                             0x04   Distributed (BIFF8X)
  #      7     1  XF_ROTATION: Text rotation angle (see above)
  #                Value  Text rotation
  #                    0  Not rotated
  #                 1-90  1 to 90 degrees counterclockwise
  #               91-180  1 to 90 degrees clockwise
  #                  255  Letters are stacked top-to-bottom,
  #                       but not rotated
  #      8     1   Bit  Mask    Contents
  #                3-0  0x0f    Indent level
  #                  4  0x10    1 = Shrink content to fit into cell
  #                  5  0x40    1 = Merge Range (djberger)
  #                7-6  0xc0    Text direction (BIFF8X only)
  #                             0 = According to context
  #                             1 = Left-to-right
  #                             2 = Right-to-left
  #      9     1   Bit  Mask    Contents
  #                7-2  0xfc    XF_USED_ATTRIB – Used attributes
  #                             Each bit describes the validity of a
  #                             specific group of attributes. In cell XFs
  #                             a cleared bit means the attributes of the
  #                             parent style XF are used (but only if the
  #                             attributes are valid there), a set bit
  #                             means the attributes of this XF are used.
  #                             In style XFs a cleared bit means the
  #                             attribute setting is valid, a set bit
  #                             means the attribute should be ignored.
  #                             Bit  Mask  Contents
  #                               0  0x01  Flag for number format
  #                               1  0x02  Flag for font
  #                               2  0x04  Flag for horizontal and
  #                                        vertical alignment, text wrap,
  #                                        indentation, orientation,
  #                                        rotation, and text direction
  #                               3  0x08  Flag for border lines
  #                               4  0x10  Flag for background area style
  #                               5  0x20  Flag for cell protection (cell
  #                                        locked and formula hidden)
  #     10     4  Cell border lines and background area:
  #                 Bit  Mask        Contents
  #                3- 0  0x0000000f  Left line style (➜ 3.10)
  #                7- 4  0x000000f0  Right line style (➜ 3.10)
  #               11- 8  0x00000f00  Top line style (➜ 3.10)
  #               15-12  0x0000f000  Bottom line style (➜ 3.10)
  #               22-16  0x007f0000  Colour index (➜ 6.70)
  #                                  for left line colour
  #               29-23  0x3f800000  Colour index (➜ 6.70)
  #                                  for right line colour
  #                  30  0x40000000  1 = Diagonal line
  #                                  from top left to right bottom
  #                  31  0x80000000  1 = Diagonal line
  #                                  from bottom left to right top
  #     14     4    Bit  Mask        Contents
  #                6- 0  0x0000007f  Colour index (➜ 6.70)
  #                                  for top line colour
  #               13- 7  0x00003f80  Colour index (➜ 6.70)
  #                                  for bottom line colour
  #               20-14  0x001fc000  Colour index (➜ 6.70)
  #                                  for diagonal line colour
  #               24-21  0x01e00000  Diagonal line style (➜ 3.10)
  #               31-26  0xfc000000  Fill pattern (➜ 3.11)
  #     18     2    Bit  Mask        Contents
  #                 6-0  0x007f      Colour index (➜ 6.70)
  #                                  for pattern colour
  #                13-7  0x3f80      Colour index (➜ 6.70)
  #                                  for pattern background
  fmt = Format.new
  font_idx, numfmt, _, xf_align, xf_rotation, xf_indent, _,
    xf_borders, xf_brdcolors, xf_pattern = work.unpack binfmt(:xf)
  fmt.number_format = @formats[numfmt]
  ## this appears to be undocumented: the first 4 fonts seem to be accessed
  #  with a 0-based index, but all subsequent font indices are 1-based.
  fmt.font = @workbook.font(font_idx > 3 ? font_idx - 1 : font_idx)
  fmt.horizontal_align = NGILA_H_FX[xf_align & 0x07]
  fmt.text_wrap = xf_align & 0x08 > 0
  fmt.vertical_align = NGILA_V_FX[xf_align & 0x70]
  fmt.rotation = if xf_rotation == 255
                   :stacked
                 elsif xf_rotation > 90
                   90 - xf_rotation
                 else
                   xf_rotation
                 end
  fmt.indent_level = xf_indent & 0x0f
  fmt.shrink = xf_indent & 0x10 > 0
  fmt.text_direction = NOITCERID_TXET_FX[xf_indent & 0xc0]
  fmt.left           = XF_BORDER_LINE_STYLES[xf_borders & 0x0000000f]
  fmt.right          = XF_BORDER_LINE_STYLES[(xf_borders & 0x000000f0) >>  4]
  fmt.top            = XF_BORDER_LINE_STYLES[(xf_borders & 0x00000f00) >>  8]
  fmt.bottom         = XF_BORDER_LINE_STYLES[(xf_borders & 0x0000f000) >> 12]
  fmt.left_color     = COLOR_CODES[(xf_borders & 0x007f0000) >> 16] || :black
  fmt.right_color    = COLOR_CODES[(xf_borders & 0x3f800000) >> 23] || :black
  fmt.cross_down     = xf_borders & 0x40000000 > 0
  fmt.cross_up       = xf_borders & 0x80000000 > 0
if xf_brdcolors
  	fmt.top_color      = COLOR_CODES[xf_brdcolors & 0x0000007f] || :black
  	fmt.bottom_color   = COLOR_CODES[(xf_brdcolors & 0x00003f80) >> 7] || :black
  	fmt.diagonal_color = COLOR_CODES[(xf_brdcolors & 0x001fc000) >> 14] || :black
  	#fmt.diagonal_style = COLOR_CODES[xf_brdcolors & 0x01e00000]
  	fmt.pattern        = (xf_brdcolors & 0xfc000000) >> 26
end
  fmt.pattern_fg_color = COLOR_CODES[xf_pattern & 0x007f] || :border
  fmt.pattern_bg_color = COLOR_CODES[(xf_pattern & 0x3f80) >> 7] || :pattern_bg
  @workbook.add_format fmt
end

#set_cell(worksheet, row, column, xf, value = nil) ⇒ Object



68
69
70
71
72
# File 'lib/parseexcel/parseexcel.rb', line 68

def set_cell worksheet, row, column, xf, value=nil
  cells = @current_row_block[row] ||= Row.new(nil, row)
  cells.formats[column] = xf = @workbook.format(xf)
  cells[column] = ParseExcel::Worksheet::Cell.new(value, xf, cells, column)
end

#set_missing_row_address(worksheet, work, pos, len) ⇒ Object



1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
# File 'lib/spreadsheet/excel/reader.rb', line 1176

def set_missing_row_address worksheet, work, pos, len
  # Offset  Size  Contents
  #      0     2  Index of this row
  #      2     2  Index to this column
  row_index, _ = work.unpack 'v2'
  unless worksheet.offsets[row_index]
    @current_row_block_offset ||= [pos]
    data = {
      :index          => row_index,
      :row_block      => @current_row_block_offset,
      :offset         => @current_row_block_offset[0],
    }
    worksheet.set_row_address row_index, data
  end
end

#set_row_address(worksheet, work, pos, len) ⇒ Object



1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
# File 'lib/spreadsheet/excel/reader.rb', line 1191

def set_row_address worksheet, work, pos, len
  # Offset  Size  Contents
  #      0     2  Index of this row
  #      2     2  Index to column of the first cell which
  #               is described by a cell record
  #      4     2  Index to column of the last cell which is
  #               described by a cell record, increased by 1
  #      6     2  Bit   Mask    Contents
  #               14-0  0x7fff  Height of the row, in twips = 1/20 of a point
  #                 15  0x8000  0 = Row has custom height;
  #                             1 = Row has default height
  #      8     2  Not used
  #     10     2  In BIFF3-BIFF4 this field contains a relative offset to
  #               calculate stream position of the first cell record for this
  #               row (➜ 5.7.1). In BIFF5-BIFF8 this field is not used
  #               anymore, but the DBCELL record (➜ 6.26) instead.
  #     12     4  Option flags and default row formatting:
  #                  Bit  Mask        Contents
  #                  2-0  0x00000007  Outline level of the row
  #                    4  0x00000010  1 = Outline group starts or ends here
  #                                       (depending on where the outline
  #                                       buttons are located, see WSBOOL
  #                                       record, ➜ 6.113), and is collapsed
  #                    5  0x00000020  1 = Row is hidden (manually, or by a
  #                                       filter or outline group)
  #                    6  0x00000040  1 = Row height and default font height
  #                                       do not match
  #                    7  0x00000080  1 = Row has explicit default format (fl)
  #                    8  0x00000100  Always 1
  #                27-16  0x0fff0000  If fl = 1: Index to default XF record
  #                                              (➜ 6.115)
  #                   28  0x10000000  1 = Additional space above the row.
  #                                       This flag is set, if the upper
  #                                       border of at least one cell in this
  #                                       row or if the lower border of at
  #                                       least one cell in the row above is
  #                                       formatted with a thick line style.
  #                                       Thin and medium line styles are not
  #                                       taken into account.
  #                   29  0x20000000  1 = Additional space below the row.
  #                                       This flag is set, if the lower
  #                                       border of at least one cell in this
  #                                       row or if the upper border of at
  #                                       least one cell in the row below is
  #                                       formatted with a medium or thick
  #                                       line style. Thin line styles are
  #                                       not taken into account.
  @current_row_block_offset ||= [pos]
  index, first_used, first_unused, height, flags = work.unpack binfmt(:row)
  height &= 0x7fff
  format = nil
  # TODO: read attributes from work[13,3], read flags
  attrs = {
    :default_format => format,
    :first_used     => first_used,
    :first_unused   => first_unused,
    :index          => index,
    :row_block      => @current_row_block_offset,
    :offset         => @current_row_block_offset[0],
    :outline_level  => flags & 0x00000007,
    :collapsed      => (flags & 0x0000010) > 0,
    :hidden         => (flags & 0x0000020) > 0,
  }
  if (flags & 0x00000040) > 0
    attrs.store :height, height / TWIPS
  end
  if (flags & 0x00000080) > 0
    xf = (flags & 0x0fff0000) >> 16
    attrs.store :default_format, @workbook.format(xf)
  end
  # TODO: Row spacing
  worksheet.set_row_address index, attrs
end

#setup(io) ⇒ Object

Raises:

  • (RuntimeError)


1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
# File 'lib/spreadsheet/excel/reader.rb', line 1264

def setup io
  ## Reading from StringIO fails without forced encoding
  if io.respond_to?(:string) && (str = io.string) \
    && str.respond_to?(:force_encoding)
    str.force_encoding 'ASCII-8BIT'
  end
  ##
  io.rewind
  @ole = Ole::Storage.open io
  @workbook = Workbook.new io, {}
  %w{Book Workbook BOOK WORKBOOK book workbook}.any? do |name|
    @book = @ole.file.open(name) rescue false
  end
  raise RuntimeError, "could not locate a workbook, possibly an empty file passed" unless @book
  @data = @book.read
  read_bof
  @workbook.ole = @book
  @workbook.bof = @bof
  @workbook.version = @version
  biff = @workbook.biff_version
  extend_reader biff
  extend_internals biff
end