pintos-os.org Git - pspp/blob - src/output/spv/spv-table-look.c

   1 /* PSPP - a program for statistical analysis.
   2    Copyright (C) 2017, 2018, 2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 #include <config.h>
  18
  19 #include "output/spv/spv-table-look.h"
  20
  21 #include <errno.h>
  22 #include <inttypes.h>
  23 #include <libxml/xmlreader.h>
  24 #include <libxml/xmlwriter.h>
  25 #include <string.h>
  26
  27 #include "libpspp/i18n.h"
  28 #include "output/spv/structure-xml-parser.h"
  29 #include "output/spv/tlo-parser.h"
  30 #include "output/pivot-table.h"
  31
  32 #include "gl/read-file.h"
  33 #include "gl/xalloc.h"
  34 #include "gl/xmemdup0.h"
  35
  36 #include "gettext.h"
  37 #define _(msgid) gettext (msgid)
  38
  39 static struct cell_color
  40 optional_color (int color, struct cell_color default_color)
  41 {
  42   return (color >= 0
  43           ? (struct cell_color) CELL_COLOR (color >> 16, color >> 8, color)
  44           : default_color);
  45 }
  46
  47 static int
  48 optional_length (const char *s, int default_length)
  49 {
  50   /* There is usually a "pt" suffix.  We ignore it. */
  51   int length;
  52   return s && sscanf (s, "%d", &length) == 1 ? length : default_length;
  53 }
  54
  55 static int
  56 optional_px (double inches, int default_px)
  57 {
  58   return inches != DBL_MAX ? inches * 96.0 : default_px;
  59 }
  60
  61 static int
  62 optional_int (int x, int default_value)
  63 {
  64   return x != INT_MIN ? x : default_value;
  65 }
  66
  67 static int
  68 optional_pt (double inches, int default_pt)
  69 {
  70   return inches != DBL_MAX ? inches * 72.0 + .5 : default_pt;
  71 }
  72
  73 static const char *pivot_area_names[PIVOT_N_AREAS] = {
  74   [PIVOT_AREA_TITLE] = "title",
  75   [PIVOT_AREA_CAPTION] = "caption",
  76   [PIVOT_AREA_FOOTER] = "footnotes",
  77   [PIVOT_AREA_CORNER] = "cornerLabels",
  78   [PIVOT_AREA_COLUMN_LABELS] = "columnLabels",
  79   [PIVOT_AREA_ROW_LABELS] = "rowLabels",
  80   [PIVOT_AREA_DATA] = "data",
  81   [PIVOT_AREA_LAYERS] = "layers",
  82 };
  83
  84 static enum pivot_area
  85 pivot_area_from_name (const char *name)
  86 {
  87   enum pivot_area area;
  88   for (area = 0; area < PIVOT_N_AREAS; area++)
  89     if (!strcmp (name, pivot_area_names[area]))
  90       break;
  91   return area;
  92 }
  93
  94 static const char *pivot_border_names[PIVOT_N_BORDERS] = {
  95   [PIVOT_BORDER_TITLE] = "titleLayerSeparator",
  96   [PIVOT_BORDER_OUTER_LEFT] = "leftOuterFrame",
  97   [PIVOT_BORDER_OUTER_TOP] = "topOuterFrame",
  98   [PIVOT_BORDER_OUTER_RIGHT] = "rightOuterFrame",
  99   [PIVOT_BORDER_OUTER_BOTTOM] = "bottomOuterFrame",
 100   [PIVOT_BORDER_INNER_LEFT] = "leftInnerFrame",
 101   [PIVOT_BORDER_INNER_TOP] = "topInnerFrame",
 102   [PIVOT_BORDER_INNER_RIGHT] = "rightInnerFrame",
 103   [PIVOT_BORDER_INNER_BOTTOM] = "bottomInnerFrame",
 104   [PIVOT_BORDER_DATA_LEFT] = "dataAreaLeft",
 105   [PIVOT_BORDER_DATA_TOP] = "dataAreaTop",
 106   [PIVOT_BORDER_DIM_ROW_HORZ] = "horizontalDimensionBorderRows",
 107   [PIVOT_BORDER_DIM_ROW_VERT] = "verticalDimensionBorderRows",
 108   [PIVOT_BORDER_DIM_COL_HORZ] = "horizontalDimensionBorderColumns",
 109   [PIVOT_BORDER_DIM_COL_VERT] = "verticalDimensionBorderColumns",
 110   [PIVOT_BORDER_CAT_ROW_HORZ] = "horizontalCategoryBorderRows",
 111   [PIVOT_BORDER_CAT_ROW_VERT] = "verticalCategoryBorderRows",
 112   [PIVOT_BORDER_CAT_COL_HORZ] = "horizontalCategoryBorderColumns",
 113   [PIVOT_BORDER_CAT_COL_VERT] = "verticalCategoryBorderColumns",
 114 };
 115
 116 static enum pivot_border
 117 pivot_border_from_name (const char *name)
 118 {
 119   enum pivot_border border;
 120   for (border = 0; border < PIVOT_N_BORDERS; border++)
 121     if (!strcmp (name, pivot_border_names[border]))
 122       break;
 123   return border;
 124 }
 125
 126 char * WARN_UNUSED_RESULT
 127 spv_table_look_decode (const struct spvsx_table_properties *in,
 128                        struct pivot_table_look **outp)
 129 {
 130   struct pivot_table_look *out = pivot_table_look_new_builtin_default ();
 131   char *error = NULL;
 132
 133   out->name = xstrdup_if_nonnull (in->name);
 134
 135   const struct spvsx_general_properties *g = in->general_properties;
 136   out->omit_empty = g->hide_empty_rows != 0;
 137   out->width_ranges[TABLE_HORZ][0] = optional_pt (g->minimum_column_width, -1);
 138   out->width_ranges[TABLE_HORZ][1] = optional_pt (g->maximum_column_width, -1);
 139   out->width_ranges[TABLE_VERT][0] = optional_pt (g->minimum_row_width, -1);
 140   out->width_ranges[TABLE_VERT][1] = optional_pt (g->maximum_row_width, -1);
 141   out->row_labels_in_corner
 142     = g->row_dimension_labels != SPVSX_ROW_DIMENSION_LABELS_NESTED;
 143
 144   const struct spvsx_footnote_properties *f = in->footnote_properties;
 145   out->footnote_marker_superscripts
 146     = (f->marker_position != SPVSX_MARKER_POSITION_SUBSCRIPT);
 147   out->show_numeric_markers
 148     = (f->number_format == SPVSX_NUMBER_FORMAT_NUMERIC);
 149
 150   const struct spvsx_cell_format_properties *cfp = in->cell_format_properties;
 151   for (size_t i = 0; i < cfp->n_cell_style; i++)
 152     {
 153       const struct spvsx_cell_style *c = cfp->cell_style[i];
 154       const char *name = CHAR_CAST (const char *, c->node_.raw->name);
 155       enum pivot_area area = pivot_area_from_name (name);
 156       if (area == PIVOT_N_AREAS)
 157         {
 158           error = xasprintf ("unknown area \"%s\" in cellFormatProperties",
 159                              name);
 160           goto error;
 161         }
 162
 163       struct table_area_style *a = &out->areas[area];
 164       const struct spvsx_style *s = c->style;
 165       if (s->font_weight)
 166         a->font_style.bold = s->font_weight == SPVSX_FONT_WEIGHT_BOLD;
 167       if (s->font_style)
 168         a->font_style.italic = s->font_style == SPVSX_FONT_STYLE_ITALIC;
 169       if (s->font_underline)
 170         a->font_style.underline
 171           = s->font_underline == SPVSX_FONT_UNDERLINE_UNDERLINE;
 172       if (s->color >= 0)
 173         a->font_style.fg[0] = optional_color (
 174           s->color, (struct cell_color) CELL_COLOR_BLACK);
 175       if (c->alternating_text_color >= 0 || s->color >= 0)
 176         a->font_style.fg[1] = optional_color (c->alternating_text_color,
 177                                               a->font_style.fg[0]);
 178       if (s->color2 >= 0)
 179         a->font_style.bg[0] = optional_color (
 180           s->color2, (struct cell_color) CELL_COLOR_WHITE);
 181       if (c->alternating_color >= 0 || s->color2 >= 0)
 182         a->font_style.bg[1] = optional_color (c->alternating_color,
 183                                               a->font_style.bg[0]);
 184       if (s->font_family)
 185         {
 186           free (a->font_style.typeface);
 187           a->font_style.typeface = xstrdup (s->font_family);
 188         }
 189
 190       if (s->font_size)
 191         a->font_style.size = optional_length (s->font_size, 0);
 192
 193       if (s->text_alignment)
 194         a->cell_style.halign
 195           = (s->text_alignment == SPVSX_TEXT_ALIGNMENT_LEFT
 196              ? TABLE_HALIGN_LEFT
 197              : s->text_alignment == SPVSX_TEXT_ALIGNMENT_RIGHT
 198              ? TABLE_HALIGN_RIGHT
 199              : s->text_alignment == SPVSX_TEXT_ALIGNMENT_CENTER
 200              ? TABLE_HALIGN_CENTER
 201              : s->text_alignment == SPVSX_TEXT_ALIGNMENT_DECIMAL
 202              ? TABLE_HALIGN_DECIMAL
 203              : TABLE_HALIGN_MIXED);
 204       if (s->label_location_vertical)
 205         a->cell_style.valign
 206           = (s->label_location_vertical == SPVSX_LABEL_LOCATION_VERTICAL_NEGATIVE
 207              ? TABLE_VALIGN_BOTTOM
 208              : s->label_location_vertical == SPVSX_LABEL_LOCATION_VERTICAL_POSITIVE
 209              ? TABLE_VALIGN_TOP
 210              : TABLE_VALIGN_CENTER);
 211
 212       if (s->decimal_offset != DBL_MAX)
 213         a->cell_style.decimal_offset = optional_px (s->decimal_offset, 0);
 214
 215       if (s->margin_left != DBL_MAX)
 216         a->cell_style.margin[TABLE_HORZ][0] = optional_px (s->margin_left, 8);
 217       if (s->margin_right != DBL_MAX)
 218         a->cell_style.margin[TABLE_HORZ][1] = optional_px (s->margin_right,
 219                                                            11);
 220       if (s->margin_top != DBL_MAX)
 221         a->cell_style.margin[TABLE_VERT][0] = optional_px (s->margin_top, 1);
 222       if (s->margin_bottom != DBL_MAX)
 223         a->cell_style.margin[TABLE_VERT][1] = optional_px (s->margin_bottom,
 224                                                            1);
 225     }
 226
 227   const struct spvsx_border_properties *bp = in->border_properties;
 228   for (size_t i = 0; i < bp->n_border_style; i++)
 229     {
 230       const struct spvsx_border_style *bin = bp->border_style[i];
 231       const char *name = CHAR_CAST (const char *, bin->node_.raw->name);
 232       enum pivot_border border = pivot_border_from_name (name);
 233       if (border == PIVOT_N_BORDERS)
 234         {
 235           error = xasprintf ("unknown border \"%s\" parsing borderProperties",
 236                              name);
 237           goto error;
 238         }
 239
 240       struct table_border_style *bout = &out->borders[border];
 241       bout->stroke
 242         = (bin->border_style_type == SPVSX_BORDER_STYLE_TYPE_NONE
 243            ? TABLE_STROKE_NONE
 244            : bin->border_style_type == SPVSX_BORDER_STYLE_TYPE_DASHED
 245            ? TABLE_STROKE_DASHED
 246            : bin->border_style_type == SPVSX_BORDER_STYLE_TYPE_THICK
 247            ? TABLE_STROKE_THICK
 248            : bin->border_style_type == SPVSX_BORDER_STYLE_TYPE_THIN
 249            ? TABLE_STROKE_THIN
 250            : bin->border_style_type == SPVSX_BORDER_STYLE_TYPE_DOUBLE
 251            ? TABLE_STROKE_DOUBLE
 252            : TABLE_STROKE_SOLID);
 253       bout->color = optional_color (bin->color,
 254                                     (struct cell_color) CELL_COLOR_BLACK);
 255     }
 256
 257   const struct spvsx_printing_properties *pp = in->printing_properties;
 258   out->print_all_layers = pp->print_all_layers > 0;
 259   out->paginate_layers = pp->print_each_layer_on_separate_page > 0;
 260   out->shrink_to_fit[TABLE_HORZ] = pp->rescale_wide_table_to_fit_page > 0;
 261   out->shrink_to_fit[TABLE_VERT] = pp->rescale_long_table_to_fit_page > 0;
 262   out->top_continuation = pp->continuation_text_at_top > 0;
 263   out->bottom_continuation = pp->continuation_text_at_bottom > 0;
 264   free (out->continuation);
 265   out->continuation = xstrdup (pp->continuation_text
 266                                ? pp->continuation_text : "(cont.)");
 267   out->n_orphan_lines = optional_int (pp->window_orphan_lines, 2);
 268
 269   *outp = out;
 270   return NULL;
 271
 272 error:
 273   pivot_table_look_unref (out);
 274   *outp = NULL;
 275   return error;
 276 }
 277 \f
 278 static struct cell_color
 279 tlo_decode_color (uint32_t c)
 280 {
 281   return (struct cell_color) CELL_COLOR (c, c >> 8, c >> 16);
 282 }
 283
 284 static void
 285 tlo_decode_border (const struct tlo_separator *in,
 286                    struct table_border_style *out)
 287 {
 288   if (in->type == 0)
 289     {
 290       out->stroke = TABLE_STROKE_NONE;
 291       return;
 292     }
 293
 294   out->color = tlo_decode_color (in->type_01.color);
 295
 296   switch (in->type_01.style)
 297     {
 298     case 0:
 299       out->stroke = (in->type_01.width == 0 ? TABLE_STROKE_THIN
 300                      : in->type_01.width == 1 ? TABLE_STROKE_SOLID
 301                      : TABLE_STROKE_THICK);
 302       break;
 303
 304     case 1:
 305       out->stroke = TABLE_STROKE_DOUBLE;
 306       break;
 307
 308     case 2:
 309       out->stroke = TABLE_STROKE_DASHED;
 310       break;
 311     }
 312 }
 313
 314 static struct cell_color
 315 interpolate_colors (struct cell_color c0, struct cell_color c1, int shading)
 316 {
 317   if (shading <= 0)
 318     return c0;
 319   else if (shading >= 10)
 320     return c1;
 321   else
 322     {
 323       int x0 = 10 - shading;
 324       int x1 = shading;
 325
 326       return (struct cell_color) CELL_COLOR ((c0.r * x0 + c1.r * x1) / 10,
 327                                              (c0.g * x0 + c1.g * x1) / 10,
 328                                              (c0.b * x0 + c1.b * x1) / 10);
 329     }
 330 }
 331
 332 static void
 333 tlo_decode_area (const struct tlo_area_color *color,
 334                  const struct tlo_area_style *style,
 335                  struct table_area_style *out)
 336 {
 337   out->cell_style.halign = (style->halign == 0 ? TABLE_HALIGN_LEFT
 338                             : style->halign == 1 ? TABLE_HALIGN_RIGHT
 339                             : style->halign == 2 ? TABLE_HALIGN_CENTER
 340                             : style->halign == 4 ? TABLE_HALIGN_DECIMAL
 341                             : TABLE_HALIGN_MIXED);
 342   out->cell_style.valign = (style->valign == 0 ? TABLE_VALIGN_TOP
 343                             : style->valign == 1 ? TABLE_VALIGN_BOTTOM
 344                             : TABLE_VALIGN_CENTER);
 345   out->cell_style.decimal_offset = style->decimal_offset / 20;
 346   out->cell_style.decimal_char = '.';                  /* XXX */
 347   out->cell_style.margin[TABLE_HORZ][0] = style->left_margin / 20;
 348   out->cell_style.margin[TABLE_HORZ][1] = style->right_margin / 20;
 349   out->cell_style.margin[TABLE_VERT][0] = style->top_margin / 20;
 350   out->cell_style.margin[TABLE_VERT][1] = style->bottom_margin / 20;
 351
 352   out->font_style.bold = style->weight > 400;
 353   out->font_style.italic = style->italic;
 354   out->font_style.underline = style->underline;
 355   out->font_style.markup = false;
 356
 357   out->font_style.fg[0] = out->font_style.fg[1]
 358     = tlo_decode_color (style->text_color);
 359
 360   struct cell_color c0 = tlo_decode_color (color->color0);
 361   struct cell_color c10 = tlo_decode_color (color->color10);
 362   struct cell_color bg = interpolate_colors (c0, c10, color->shading);
 363   out->font_style.bg[0] = out->font_style.bg[1] = bg;
 364
 365   free (out->font_style.typeface);
 366   out->font_style.typeface = recode_string (
 367     "UTF-8", "ISO-8859-1",
 368     CHAR_CAST (char *, style->font_name), style->font_name_len);
 369   out->font_style.size = -style->font_size * 3 / 4;
 370 }
 371
 372 static struct pivot_table_look *
 373 tlo_decode (const struct tlo_table_look *in)
 374 {
 375   struct pivot_table_look *out = pivot_table_look_new_builtin_default ();
 376
 377   const uint16_t flags = in->tl->flags;
 378
 379   out->omit_empty = (flags & 0x02) != 0;
 380   out->row_labels_in_corner = !in->tl->nested_row_labels;
 381   if (in->v2_styles)
 382     {
 383       out->width_ranges[TABLE_HORZ][0] = in->v2_styles->min_col_width;
 384       out->width_ranges[TABLE_HORZ][1] = in->v2_styles->max_col_width;
 385       out->width_ranges[TABLE_VERT][0] = in->v2_styles->min_row_height;
 386       out->width_ranges[TABLE_VERT][1] = in->v2_styles->max_row_height;
 387     }
 388   else
 389     {
 390       out->width_ranges[TABLE_HORZ][0] = 36;
 391       out->width_ranges[TABLE_HORZ][1] = 72;
 392       out->width_ranges[TABLE_VERT][0] = 36;
 393       out->width_ranges[TABLE_VERT][1] = 120;
 394     }
 395
 396   out->show_numeric_markers = flags & 0x04;
 397   out->footnote_marker_superscripts = !in->tl->footnote_marker_subscripts;
 398
 399   for (int i = 0; i < 4; i++)
 400     {
 401       static const enum pivot_border map[4] =
 402         {
 403           PIVOT_BORDER_DIM_ROW_HORZ,
 404           PIVOT_BORDER_DIM_ROW_VERT,
 405           PIVOT_BORDER_CAT_ROW_HORZ,
 406           PIVOT_BORDER_CAT_ROW_VERT,
 407         };
 408       tlo_decode_border (in->ss->sep1[i], &out->borders[map[i]]);
 409     }
 410
 411   for (int i = 0; i < 4; i++)
 412     {
 413       static const enum pivot_border map[4] =
 414         {
 415           PIVOT_BORDER_DIM_COL_HORZ,
 416           PIVOT_BORDER_DIM_COL_VERT,
 417           PIVOT_BORDER_CAT_COL_HORZ,
 418           PIVOT_BORDER_CAT_COL_VERT,
 419         };
 420       tlo_decode_border (in->ss->sep2[i], &out->borders[map[i]]);
 421     }
 422
 423   if (in->v2_styles)
 424     for (int i = 0; i < 11; i++)
 425       {
 426         static const enum pivot_border map[11] =
 427           {
 428             PIVOT_BORDER_TITLE,
 429             PIVOT_BORDER_INNER_LEFT,
 430             PIVOT_BORDER_INNER_RIGHT,
 431             PIVOT_BORDER_INNER_TOP,
 432             PIVOT_BORDER_INNER_BOTTOM,
 433             PIVOT_BORDER_OUTER_LEFT,
 434             PIVOT_BORDER_OUTER_RIGHT,
 435             PIVOT_BORDER_OUTER_TOP,
 436             PIVOT_BORDER_OUTER_BOTTOM,
 437             PIVOT_BORDER_DATA_LEFT,
 438             PIVOT_BORDER_DATA_TOP,
 439           };
 440         tlo_decode_border (in->v2_styles->sep3[i], &out->borders[map[i]]);
 441       }
 442   else
 443     {
 444       out->borders[PIVOT_BORDER_TITLE].stroke = TABLE_STROKE_NONE;
 445       out->borders[PIVOT_BORDER_INNER_LEFT].stroke = TABLE_STROKE_SOLID;
 446       out->borders[PIVOT_BORDER_INNER_TOP].stroke = TABLE_STROKE_SOLID;
 447       out->borders[PIVOT_BORDER_INNER_RIGHT].stroke = TABLE_STROKE_SOLID;
 448       out->borders[PIVOT_BORDER_INNER_BOTTOM].stroke = TABLE_STROKE_SOLID;
 449       out->borders[PIVOT_BORDER_OUTER_LEFT].stroke = TABLE_STROKE_NONE;
 450       out->borders[PIVOT_BORDER_OUTER_TOP].stroke = TABLE_STROKE_NONE;
 451       out->borders[PIVOT_BORDER_OUTER_RIGHT].stroke = TABLE_STROKE_NONE;
 452       out->borders[PIVOT_BORDER_OUTER_BOTTOM].stroke = TABLE_STROKE_NONE;
 453       out->borders[PIVOT_BORDER_DATA_LEFT].stroke = TABLE_STROKE_NONE;
 454       out->borders[PIVOT_BORDER_DATA_TOP].stroke = TABLE_STROKE_NONE;
 455     }
 456
 457   tlo_decode_area (in->cs->title_color, in->ts->title_style,
 458                    &out->areas[PIVOT_AREA_TITLE]);
 459   for (int i = 0; i < 7; i++)
 460     {
 461       static const enum pivot_area map[7] = {
 462         PIVOT_AREA_LAYERS,
 463         PIVOT_AREA_CORNER,
 464         PIVOT_AREA_ROW_LABELS,
 465         PIVOT_AREA_COLUMN_LABELS,
 466         PIVOT_AREA_DATA,
 467         PIVOT_AREA_CAPTION,
 468         PIVOT_AREA_FOOTER
 469       };
 470       tlo_decode_area (in->ts->most_areas[i]->color,
 471                        in->ts->most_areas[i]->style,
 472                        &out->areas[map[i]]);
 473     }
 474
 475   out->print_all_layers = flags & 0x08;
 476   out->paginate_layers = flags & 0x40;
 477   out->shrink_to_fit[TABLE_HORZ] = flags & 0x10;
 478   out->shrink_to_fit[TABLE_VERT] = flags & 0x20;
 479   out->top_continuation = flags & 0x80;
 480   out->bottom_continuation = flags & 0x100;
 481   if (in->v2_styles)
 482     {
 483       free (out->continuation);
 484       out->continuation = xmemdup0 (in->v2_styles->continuation,
 485                                     in->v2_styles->continuation_len);
 486     }
 487   /* n_orphan_lines isn't in .tlo files AFAICT. */
 488
 489   return out;
 490 }
 491 \f
 492 char * WARN_UNUSED_RESULT
 493 spv_table_look_read (const char *filename, struct pivot_table_look **outp)
 494 {
 495   *outp = NULL;
 496
 497   size_t length;
 498   char *file = read_file (filename, 0, &length);
 499   if (!file)
 500     return xasprintf ("%s: failed to read file (%s)",
 501                       filename, strerror (errno));
 502
 503   if ((uint8_t) file[0] == 0xff)
 504     {
 505       struct spvbin_input input;
 506       spvbin_input_init (&input, file, length);
 507
 508       struct tlo_table_look *look;
 509       char *error = NULL;
 510       if (!tlo_parse_table_look (&input, &look))
 511         error = spvbin_input_to_error (&input, NULL);
 512       else
 513         {
 514           *outp = tlo_decode (look);
 515           tlo_free_table_look (look);
 516         }
 517       return error;
 518     }
 519   else
 520     {
 521       xmlDoc *doc = xmlReadMemory (file, length, NULL, NULL, XML_PARSE_NOBLANKS);
 522       free (file);
 523       if (!doc)
 524         return xasprintf ("%s: failed to parse XML", filename);
 525
 526       struct spvxml_context ctx = SPVXML_CONTEXT_INIT (ctx);
 527       struct spvsx_table_properties *tp;
 528       spvsx_parse_table_properties (&ctx, xmlDocGetRootElement (doc), &tp);
 529       char *error = spvxml_context_finish (&ctx, &tp->node_);
 530
 531       if (!error)
 532         error = spv_table_look_decode (tp, outp);
 533
 534       spvsx_free_table_properties (tp);
 535       xmlFreeDoc (doc);
 536
 537       return error;
 538     }
 539 }
 540
 541 static void
 542 write_attr (xmlTextWriter *xml, const char *name, const char *value)
 543 {
 544   xmlTextWriterWriteAttribute (xml,
 545                                CHAR_CAST (xmlChar *, name),
 546                                CHAR_CAST (xmlChar *, value));
 547 }
 548
 549 static void PRINTF_FORMAT (3, 4)
 550 write_attr_format (xmlTextWriter *xml, const char *name,
 551                    const char *format, ...)
 552 {
 553   va_list args;
 554   va_start (args, format);
 555   char *value = xvasprintf (format, args);
 556   va_end (args);
 557
 558   write_attr (xml, name, value);
 559   free (value);
 560 }
 561
 562 static void
 563 write_attr_color (xmlTextWriter *xml, const char *name,
 564                   const struct cell_color *color)
 565 {
 566   write_attr_format (xml, name, "#%02"PRIx8"%02"PRIx8"%02"PRIx8,
 567                      color->r, color->g, color->b);
 568 }
 569
 570 static void
 571 write_attr_dimension (xmlTextWriter *xml, const char *name, int px)
 572 {
 573   int pt = px / 96.0 * 72.0;
 574   write_attr_format (xml, name, "%dpt", pt);
 575 }
 576
 577 static void
 578 write_attr_bool (xmlTextWriter *xml, const char *name, bool b)
 579 {
 580   write_attr (xml, name, b ? "true" : "false");
 581 }
 582
 583 static void
 584 start_elem (xmlTextWriter *xml, const char *name)
 585 {
 586   xmlTextWriterStartElement (xml, CHAR_CAST (xmlChar *, name));
 587 }
 588
 589 static void
 590 end_elem (xmlTextWriter *xml)
 591 {
 592   xmlTextWriterEndElement (xml);
 593 }
 594
 595 char * WARN_UNUSED_RESULT
 596 spv_table_look_write (const char *filename, const struct pivot_table_look *look)
 597 {
 598   FILE *file = fopen (filename, "w");
 599   if (!file)
 600     return xasprintf (_("%s: create failed (%s)"), filename, strerror (errno));
 601
 602   xmlTextWriter *xml = xmlNewTextWriter (xmlOutputBufferCreateFile (
 603                                            file, NULL));
 604   if (!xml)
 605     {
 606       fclose (file);
 607       return xasprintf (_("%s: failed to start writing XML"), filename);
 608     }
 609
 610   xmlTextWriterSetIndent (xml, 1);
 611   xmlTextWriterSetIndentString (xml, CHAR_CAST (xmlChar *, "    "));
 612
 613   xmlTextWriterStartDocument (xml, NULL, "UTF-8", NULL);
 614   start_elem (xml, "tableProperties");
 615   if (look->name)
 616     write_attr (xml, "name", look->name);
 617   write_attr (xml, "xmlns", "http://www.ibm.com/software/analytics/spss/xml/table-looks");
 618   write_attr (xml, "xmlns:vizml", "http://www.ibm.com/software/analytics/spss/xml/visualization");
 619   write_attr (xml, "xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
 620   write_attr (xml, "xsi:schemaLocation", "http://www.ibm.com/software/analytics/spss/xml/table-looks http://www.ibm.com/software/analytics/spss/xml/table-looks/table-looks-1.4.xsd");
 621
 622   start_elem (xml, "generalProperties");
 623   write_attr_bool (xml, "hideEmptyRows", look->omit_empty);
 624   const int (*wr)[2] = look->width_ranges;
 625   write_attr_format (xml, "maximumColumnWidth", "%d", wr[TABLE_HORZ][1]);
 626   write_attr_format (xml, "maximumRowWidth", "%d", wr[TABLE_VERT][1]);
 627   write_attr_format (xml, "minimumColumnWidth", "%d", wr[TABLE_HORZ][0]);
 628   write_attr_format (xml, "minimumRowWidth", "%d", wr[TABLE_VERT][0]);
 629   write_attr (xml, "rowDimensionLabels",
 630               look->row_labels_in_corner ? "inCorner" : "nested");
 631   end_elem (xml);
 632
 633   start_elem (xml, "footnoteProperties");
 634   write_attr (xml, "markerPosition",
 635               look->footnote_marker_superscripts ? "superscript" : "subscript");
 636   write_attr (xml, "numberFormat",
 637               look->show_numeric_markers ? "numeric" : "alphabetic");
 638   end_elem (xml);
 639
 640   start_elem (xml, "cellFormatProperties");
 641   for (enum pivot_area a = 0; a < PIVOT_N_AREAS; a++)
 642     {
 643       const struct table_area_style *area = &look->areas[a];
 644       const struct font_style *font = &area->font_style;
 645       const struct cell_style *cell = &area->cell_style;
 646
 647       start_elem (xml, pivot_area_names[a]);
 648       if (a == PIVOT_AREA_DATA
 649           && (!cell_color_equal (font->fg[0], font->fg[1])
 650               || !cell_color_equal (font->bg[0], font->bg[1])))
 651         {
 652           write_attr_color (xml, "alternatingColor", &font->bg[1]);
 653           write_attr_color (xml, "alternatingTextColor", &font->fg[1]);
 654         }
 655
 656       start_elem (xml, "vizml:style");
 657       write_attr_color (xml, "color", &font->fg[0]);
 658       write_attr_color (xml, "color2", &font->bg[0]);
 659       write_attr (xml, "font-family", font->typeface);
 660       write_attr_format (xml, "font-size", "%dpt", font->size);
 661       write_attr (xml, "font-weight", font->bold ? "bold" : "regular");
 662       write_attr (xml, "font-underline",
 663                   font->underline ? "underline" : "none");
 664       write_attr (xml, "labelLocationVertical",
 665                   cell->valign == TABLE_VALIGN_BOTTOM ? "negative"
 666                   : cell->valign == TABLE_VALIGN_TOP ? "positive"
 667                   : "center");
 668       write_attr_dimension (xml, "margin-bottom", cell->margin[TABLE_VERT][1]);
 669       write_attr_dimension (xml, "margin-left", cell->margin[TABLE_HORZ][0]);
 670       write_attr_dimension (xml, "margin-right", cell->margin[TABLE_HORZ][1]);
 671       write_attr_dimension (xml, "margin-top", cell->margin[TABLE_VERT][0]);
 672       write_attr (xml, "textAlignment",
 673                   cell->halign == TABLE_HALIGN_LEFT ? "left"
 674                   : cell->halign == TABLE_HALIGN_RIGHT ? "right"
 675                   : cell->halign == TABLE_HALIGN_CENTER ? "center"
 676                   : cell->halign == TABLE_HALIGN_DECIMAL ? "decimal"
 677                   : "mixed");
 678       if (cell->halign == TABLE_HALIGN_DECIMAL)
 679         write_attr_dimension (xml, "decimal-offset", cell->decimal_offset);
 680       end_elem (xml);
 681
 682       end_elem (xml);
 683     }
 684   end_elem (xml);
 685
 686   start_elem (xml, "borderProperties");
 687   for (enum pivot_border b = 0; b < PIVOT_N_BORDERS; b++)
 688     {
 689       const struct table_border_style *border = &look->borders[b];
 690
 691       start_elem (xml, pivot_border_names[b]);
 692
 693       static const char *table_stroke_names[TABLE_N_STROKES] =
 694         {
 695           [TABLE_STROKE_NONE] = "none",
 696           [TABLE_STROKE_SOLID] = "solid",
 697           [TABLE_STROKE_DASHED] = "dashed",
 698           [TABLE_STROKE_THICK] = "thick",
 699           [TABLE_STROKE_THIN] = "thin",
 700           [TABLE_STROKE_DOUBLE] = "double",
 701         };
 702       write_attr (xml, "borderStyleType", table_stroke_names[border->stroke]);
 703       write_attr_color (xml, "color", &border->color);
 704       end_elem (xml);
 705     }
 706   end_elem (xml);
 707
 708   start_elem (xml, "printingProperties");
 709   write_attr_bool (xml, "printAllLayers", look->print_all_layers);
 710   write_attr_bool (xml, "rescaleLongTableToFitPage",
 711                    look->shrink_to_fit[TABLE_HORZ]);
 712   write_attr_bool (xml, "rescaleWideTableToFitPage",
 713                    look->shrink_to_fit[TABLE_VERT]);
 714   write_attr_format (xml, "windowOrphanLines", "%zu", look->n_orphan_lines);
 715   if (look->continuation && look->continuation[0]
 716       && (look->top_continuation || look->bottom_continuation))
 717     {
 718       write_attr (xml, "continuationText", look->continuation);
 719       write_attr_bool (xml, "continuationTextAtTop", look->top_continuation);
 720       write_attr_bool (xml, "continuationTextAtBottom",
 721                        look->bottom_continuation);
 722     }
 723   end_elem (xml);
 724
 725   xmlTextWriterEndDocument (xml);
 726
 727   xmlFreeTextWriter (xml);
 728
 729   fflush (file);
 730   bool ok = !ferror (file);
 731   if (fclose (file) == EOF)
 732     ok = false;
 733
 734   if (!ok)
 735     return xasprintf (_("%s: error writing file (%s)"),
 736                       filename, strerror (errno));
 737
 738   return NULL;
 739 }