Update harfbuzz-ng to 1a5a91dc0d8bf4b72a2f22dc6300b06ad7000b79.

third_party/harfbuzz-ng/src/hb-ot-name-table.hh

+/*
+ * Copyright © 2011  Google, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_NAME_TABLE_HH
+#define HB_OT_NAME_TABLE_HH
+
+#include "hb-open-type-private.hh"
+
+
+
+/*
+ * name -- The Naming Table
+ */
+
+#define HB_OT_TAG_name HB_TAG('n','a','m','e')
+
+
+struct NameRecord
+{
+  static int cmp (const NameRecord *a, const NameRecord *b)
+  {
+    int ret;
+    ret = b->platformID.cmp (a->platformID);
+    if (ret) return ret;
+    ret = b->encodingID.cmp (a->encodingID);
+    if (ret) return ret;
+    ret = b->languageID.cmp (a->languageID);
+    if (ret) return ret;
+    ret = b->nameID.cmp (a->nameID);
+    if (ret) return ret;
+    return 0;
+  }
+
+  inline bool sanitize (hb_sanitize_context_t *c, void *base) {
+    TRACE_SANITIZE ();
+    /* We can check from base all the way up to the end of string... */
+    return c->check_struct (this) &&
+           c->check_range ((char *) base, (unsigned int) length + offset);
+  }
+
+  USHORT        platformID;     /* Platform ID. */
+  USHORT        encodingID;     /* Platform-specific encoding ID. */
+  USHORT        languageID;     /* Language ID. */
+  USHORT        nameID;         /* Name ID. */
+  USHORT        length;         /* String length (in bytes). */
+  USHORT        offset;         /* String offset from start of storage area (in bytes). */
+  public:
+  DEFINE_SIZE_STATIC (12);
+};
+
+struct name
+{
+  static const hb_tag_t Tag     = HB_OT_TAG_name;
+
+  inline unsigned int get_name (unsigned int platform_id,
+                                unsigned int encoding_id,
+                                unsigned int language_id,
+                                unsigned int name_id,
+                                void *buffer,
+                                unsigned int buffer_length) const
+  {
+    NameRecord key;
+    key.platformID.set (platform_id);
+    key.encodingID.set (encoding_id);
+    key.languageID.set (language_id);
+    key.nameID.set (name_id);
+    NameRecord *match = (NameRecord *) bsearch (&key, nameRecord, count, sizeof (nameRecord[0]), (hb_compare_func_t) NameRecord::cmp);
+
+    if (!match)
+      return 0;
+
+    unsigned int length = MIN (buffer_length, (unsigned int) match->length);
+    memcpy (buffer, (char *) this + stringOffset + match->offset, length);
+    return length;
+  }
+
+  inline bool sanitize_records (hb_sanitize_context_t *c) {
+    TRACE_SANITIZE ();
+    char *string_pool = (char *) this + stringOffset;
+    unsigned int _count = count;
+    for (unsigned int i = 0; i < _count; i++)
+      if (!nameRecord[i].sanitize (c, string_pool)) return false;
+    return true;
+  }
+
+  inline bool sanitize (hb_sanitize_context_t *c) {
+    TRACE_SANITIZE ();
+    return c->check_struct (this) &&
+           likely (format == 0 || format == 1) &&
+           c->check_array (nameRecord, nameRecord[0].static_size, count) &&
+           sanitize_records (c);
+  }
+
+  /* We only implement format 0 for now. */
+  private:
+  USHORT        format;                 /* Format selector (=0/1). */
+  USHORT        count;                  /* Number of name records. */
+  Offset        stringOffset;           /* Offset to start of string storage (from start of table). */
+  NameRecord    nameRecord[VAR];        /* The name records where count is the number of records. */
+  public:
+  DEFINE_SIZE_ARRAY (6, nameRecord);
+};
+
+
+
+#endif /* HB_OT_NAME_TABLE_HH */