test-break.c 8.05 KB
Newer Older
Matthias Clasen's avatar
Matthias Clasen committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
/* Pango
 * test-break.c: Test Pango line breaking
 *
 * Copyright (C) 2019 Red Hat, Inc
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include <glib.h>
#include <string.h>
#include <locale.h>

#ifndef G_OS_WIN32
#include <unistd.h>
#endif

#include "config.h"
#include <pango/pangocairo.h>
#include "test-common.h"


static PangoContext *context;

static void
test_file (const gchar *filename, GString *string)
{
  gchar *contents;
  gsize  length;
  GError *error = NULL;
  PangoLogAttr *attrs;
  int len;
  char *p;
  int i;
  GString *s1, *s2, *s3, *s4;
  int m;
49
  char *test;
50 51 52
  char *text;
  PangoAttrList *attributes;
  PangoLayout *layout;
Matthias Clasen's avatar
Matthias Clasen committed
53

54 55
  g_file_get_contents (filename, &contents, &length, &error);
  g_assert_no_error (error);
Matthias Clasen's avatar
Matthias Clasen committed
56

57 58 59 60 61 62 63 64
  test = contents;

  /* Skip initial comments */
  while (test[0] == '#')
    test = strchr (test, '\n') + 1;

  length = strlen (test);
  len = g_utf8_strlen (test, -1) + 1;
Matthias Clasen's avatar
Matthias Clasen committed
65 66
  attrs = g_new (PangoLogAttr, len);

67 68
  pango_parse_markup (test, -1, 0, &attributes, &text, NULL, &error);
  g_assert_no_error (error);
69 70 71 72 73

  layout = pango_layout_new (context);
  pango_layout_set_text (layout, text, length);
  pango_layout_set_attributes (layout, attributes);
  pango_layout_get_log_attrs (layout, &attrs, &len);
Matthias Clasen's avatar
Matthias Clasen committed
74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89

  s1 = g_string_new ("Breaks: ");
  s2 = g_string_new ("Whitespace: ");
  s3 = g_string_new ("Words:");
  s4 = g_string_new ("Sentences:");

  g_string_append (string, "Text: ");

  m = MAX (MAX (s1->len, s2->len), MAX (s3->len, s4->len));

  g_string_append_printf (s1, "%*s", (int)(m - s1->len), "");
  g_string_append_printf (s2, "%*s", (int)(m - s2->len), "");
  g_string_append_printf (s3, "%*s", (int)(m - s3->len), "");
  g_string_append_printf (s4, "%*s", (int)(m - s4->len), "");
  g_string_append_printf (string, "%*s", (int)(m - strlen ("Text: ")), "");

90
  for (i = 0, p = text; i < len; i++, p = g_utf8_next_char (p))
Matthias Clasen's avatar
Matthias Clasen committed
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124
    {
      PangoLogAttr log = attrs[i];
      int b = 0;
      int w = 0;
      int o = 0;
      int s = 0;

      if (log.is_mandatory_break)
        {
          g_string_append (s1, "L");
          b++;
        }
      else if (log.is_line_break)
        {
          g_string_append (s1, "l");
          b++;
        }
      if (log.is_char_break)
        {
          g_string_append (s1, "c");
          b++;
        }

      if (log.is_expandable_space)
        {
          g_string_append (s2, "x");
          w++;
        }
      else if (log.is_white)
        {
          g_string_append (s2, "w");
          w++;
        }

125 126 127 128 129
      if (log.is_word_boundary)
        {
          g_string_append (s3, "b");
          o++;
        }
Matthias Clasen's avatar
Matthias Clasen committed
130 131 132 133 134 135 136 137 138 139 140
      if (log.is_word_start)
        {
          g_string_append (s3, "s");
          o++;
        }
      if (log.is_word_end)
        {
          g_string_append (s3, "e");
          o++;
        }

141 142 143 144 145
      if (log.is_sentence_boundary)
        {
          g_string_append (s4, "b");
          s++;
        }
Matthias Clasen's avatar
Matthias Clasen committed
146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
      if (log.is_sentence_start)
        {
          g_string_append (s4, "s");
          s++;
        }
      if (log.is_sentence_end)
        {
          g_string_append (s4, "e");
          s++;
        }

      m = MAX (MAX (b, w), MAX (o, s));

      g_string_append_printf (string, "%*s", m, "");
      g_string_append_printf (s1, "%*s", m - b, "");
      g_string_append_printf (s2, "%*s", m - w, "");
      g_string_append_printf (s3, "%*s", m - o, "");
      g_string_append_printf (s4, "%*s", m - s, "");

      if (i < len - 1)
        {
          gunichar ch = g_utf8_get_char (p);
          if (ch == 0x20)
            {
              g_string_append (string, "[ ]");
              g_string_append (s1, "   ");
              g_string_append (s2, "   ");
              g_string_append (s3, "   ");
              g_string_append (s4, "   ");
            }
176 177 178
          else if (g_unichar_isgraph (ch) &&
                   !(g_unichar_type (ch) == G_UNICODE_LINE_SEPARATOR ||
                     g_unichar_type (ch) == G_UNICODE_PARAGRAPH_SEPARATOR))
Matthias Clasen's avatar
Matthias Clasen committed
179 180 181 182 183 184 185 186 187 188
            {
              g_string_append_unichar (string, ch);
              g_string_append (s1, " ");
              g_string_append (s2, " ");
              g_string_append (s3, " ");
              g_string_append (s4, " ");
            }
          else
            {
              char *str = g_strdup_printf ("[%#04x]", ch);
189
              g_string_append (string, str);
Matthias Clasen's avatar
Matthias Clasen committed
190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
              g_string_append_printf (s1, "%*s", (int)strlen (str), "");
              g_string_append_printf (s2, "%*s", (int)strlen (str), "");
              g_string_append_printf (s3, "%*s", (int)strlen (str), "");
              g_string_append_printf (s4, "%*s", (int)strlen (str), "");
              g_free (str);
            }
        }
    }
  g_string_append (string, "\n");
  g_string_append_len (string, s1->str, s1->len);
  g_string_append (string, "\n");
  g_string_append_len (string, s2->str, s2->len);
  g_string_append (string, "\n");
  g_string_append_len (string, s3->str, s3->len);
  g_string_append (string, "\n");
  g_string_append_len (string, s4->str, s4->len);
  g_string_append (string, "\n");

  g_string_free (s1, TRUE);
  g_string_free (s2, TRUE);
  g_string_free (s3, TRUE);
  g_string_free (s4, TRUE);

213
  g_object_unref (layout);
Matthias Clasen's avatar
Matthias Clasen committed
214 215
  g_free (attrs);
  g_free (contents);
216
  pango_attr_list_unref (attributes);
Matthias Clasen's avatar
Matthias Clasen committed
217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243
}

static gchar *
get_expected_filename (const gchar *filename)
{
  gchar *f, *p, *expected;

  f = g_strdup (filename);
  p = strstr (f, ".break");
  if (p)
    *p = 0;
  expected = g_strconcat (f, ".expected", NULL);

  g_free (f);

  return expected;
}

static void
test_break (gconstpointer d)
{
  const gchar *filename = d;
  gchar *expected_file;
  GError *error = NULL;
  GString *dump;
  gchar *diff;

244 245 246 247 248 249 250 251 252 253
  const char *old_locale = setlocale (LC_ALL, NULL);
  setlocale (LC_ALL, "en_US.UTF-8");
  if (strstr (setlocale (LC_ALL, NULL), "en_US") == NULL)
    {
      char *msg = g_strdup_printf ("Locale en_US.UTF-8 not available, skipping break %s", filename);
      g_test_skip (msg);
      g_free (msg);
      return;
    }

Matthias Clasen's avatar
Matthias Clasen committed
254 255 256 257 258 259
  expected_file = get_expected_filename (filename);

  dump = g_string_sized_new (0);

  test_file (filename, dump);

260
  diff = diff_with_file (expected_file, dump->str, dump->len, &error);
Matthias Clasen's avatar
Matthias Clasen committed
261 262 263 264
  g_assert_no_error (error);

  if (diff && diff[0])
    {
265 266
      g_test_message ("Contents don't match expected contents");
      g_test_message ("%s", diff);
Matthias Clasen's avatar
Matthias Clasen committed
267 268 269 270 271 272
      g_test_fail ();
      g_free (diff);
    }

  g_string_free (dump, TRUE);
  g_free (expected_file);
273 274

  setlocale (LC_ALL, old_locale);
Matthias Clasen's avatar
Matthias Clasen committed
275 276 277 278 279 280 281 282 283 284 285 286
}

int
main (int argc, char *argv[])
{
  GDir *dir;
  GError *error = NULL;
  const gchar *name;
  gchar *path;

  g_test_init (&argc, &argv, NULL);

287
  context = pango_font_map_create_context (pango_cairo_font_map_get_default ());
Matthias Clasen's avatar
Matthias Clasen committed
288 289 290 291 292 293 294 295

  /* allow to easily generate expected output for new test cases */
  if (argc > 1)
    {
      GString *string;

      string = g_string_sized_new (0);
      test_file (argv[1], string);
296
      g_test_message ("%s", string->str);
Matthias Clasen's avatar
Matthias Clasen committed
297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318

      return 0;
    }

  path = g_test_build_filename (G_TEST_DIST, "breaks", NULL);
  dir = g_dir_open (path, 0, &error);
  g_free (path);
  g_assert_no_error (error);
  while ((name = g_dir_read_name (dir)) != NULL)
    {
      if (!strstr (name, "break"))
        continue;

      path = g_strdup_printf ("/break/%s", name);
      g_test_add_data_func_full (path, g_test_build_filename (G_TEST_DIST, "breaks", name, NULL),
                                 test_break, g_free);
      g_free (path);
    }
  g_dir_close (dir);

  return g_test_run ();
}