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+/*
+ * Copyright © 2018 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
+ */
+
+#include "hb.hh"
+
+#ifndef HB_NO_NAME
+
+#include "hb-ot-name-table.hh"
+
+#include "hb-utf.hh"
+
+
+/**
+ * SECTION:hb-ot-name
+ * @title: hb-ot-name
+ * @short_description: OpenType font name information
+ * @include: hb-ot.h
+ *
+ * Functions for fetching name strings from OpenType fonts.
+ **/
+
+
+/**
+ * hb_ot_name_list_names:
+ * @face: font face.
+ * @num_entries: (out) (allow-none): number of returned entries.
+ *
+ * Enumerates all available name IDs and language combinations. Returned
+ * array is owned by the @face and should not be modified. It can be
+ * used as long as @face is alive.
+ *
+ * Returns: (out) (transfer none) (array length=num_entries): Array of available name entries.
+ * Since: 2.1.0
+ **/
+const hb_ot_name_entry_t *
+hb_ot_name_list_names (hb_face_t *face,
+ unsigned int *num_entries /* OUT */)
+{
+ const OT::name_accelerator_t &name = *face->table.name;
+ if (num_entries) *num_entries = name.names.length;
+ return (const hb_ot_name_entry_t *) name.names;
+}
+
+
+template <typename in_utf_t, typename out_utf_t>
+static inline unsigned int
+hb_ot_name_convert_utf (hb_bytes_t bytes,
+ unsigned int *text_size /* IN/OUT */,
+ typename out_utf_t::codepoint_t *text /* OUT */)
+{
+ unsigned int src_len = bytes.length / sizeof (typename in_utf_t::codepoint_t);
+ const typename in_utf_t::codepoint_t *src = (const typename in_utf_t::codepoint_t *) bytes.arrayZ;
+ const typename in_utf_t::codepoint_t *src_end = src + src_len;
+
+ typename out_utf_t::codepoint_t *dst = text;
+
+ hb_codepoint_t unicode;
+ const hb_codepoint_t replacement = HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT;
+
+ if (text_size && *text_size)
+ {
+ (*text_size)--; /* Same room for NUL-termination. */
+ const typename out_utf_t::codepoint_t *dst_end = text + *text_size;
+
+ while (src < src_end && dst < dst_end)
+ {
+ const typename in_utf_t::codepoint_t *src_next = in_utf_t::next (src, src_end, &unicode, replacement);
+ typename out_utf_t::codepoint_t *dst_next = out_utf_t::encode (dst, dst_end, unicode);
+ if (dst_next == dst)
+ break; /* Out-of-room. */
+
+ dst = dst_next;
+ src = src_next;
+ }
+
+ *text_size = dst - text;
+ *dst = 0; /* NUL-terminate. */
+ }
+
+ /* Accumulate length of rest. */
+ unsigned int dst_len = dst - text;
+ while (src < src_end)
+ {
+ src = in_utf_t::next (src, src_end, &unicode, replacement);
+ dst_len += out_utf_t::encode_len (unicode);
+ }
+ return dst_len;
+}
+
+template <typename utf_t>
+static inline unsigned int
+hb_ot_name_get_utf (hb_face_t *face,
+ hb_ot_name_id_t name_id,
+ hb_language_t language,
+ unsigned int *text_size /* IN/OUT */,
+ typename utf_t::codepoint_t *text /* OUT */)
+{
+ const OT::name_accelerator_t &name = *face->table.name;
+
+ if (!language)
+ language = hb_language_from_string ("en", 2);
+
+ unsigned int width;
+ int idx = name.get_index (name_id, language, &width);
+ if (idx != -1)
+ {
+ hb_bytes_t bytes = name.get_name (idx);
+
+ if (width == 2) /* UTF16-BE */
+ return hb_ot_name_convert_utf<hb_utf16_be_t, utf_t> (bytes, text_size, text);
+
+ if (width == 1) /* ASCII */
+ return hb_ot_name_convert_utf<hb_ascii_t, utf_t> (bytes, text_size, text);
+ }
+
+ if (text_size)
+ {
+ if (*text_size)
+ *text = 0;
+ *text_size = 0;
+ }
+ return 0;
+}
+
+/**
+ * hb_ot_name_get_utf8:
+ * @face: font face.
+ * @name_id: OpenType name identifier to fetch.
+ * @language: language to fetch the name for.
+ * @text_size: (inout) (allow-none): input size of @text buffer, and output size of
+ * text written to buffer.
+ * @text: (out caller-allocates) (array length=text_size): buffer to write fetched name into.
+ *
+ * Fetches a font name from the OpenType 'name' table.
+ * If @language is #HB_LANGUAGE_INVALID, English ("en") is assumed.
+ * Returns string in UTF-8 encoding.
+ *
+ * Returns: full length of the requested string, or 0 if not found.
+ * Since: 2.1.0
+ **/
+unsigned int
+hb_ot_name_get_utf8 (hb_face_t *face,
+ hb_ot_name_id_t name_id,
+ hb_language_t language,
+ unsigned int *text_size /* IN/OUT */,
+ char *text /* OUT */)
+{
+ return hb_ot_name_get_utf<hb_utf8_t> (face, name_id, language, text_size,
+ (hb_utf8_t::codepoint_t *) text);
+}
+
+/**
+ * hb_ot_name_get_utf16:
+ * @face: font face.
+ * @name_id: OpenType name identifier to fetch.
+ * @language: language to fetch the name for.
+ * @text_size: (inout) (allow-none): input size of @text buffer, and output size of
+ * text written to buffer.
+ * @text: (out caller-allocates) (array length=text_size): buffer to write fetched name into.
+ *
+ * Fetches a font name from the OpenType 'name' table.
+ * If @language is #HB_LANGUAGE_INVALID, English ("en") is assumed.
+ * Returns string in UTF-16 encoding.
+ *
+ * Returns: full length of the requested string, or 0 if not found.
+ * Since: 2.1.0
+ **/
+unsigned int
+hb_ot_name_get_utf16 (hb_face_t *face,
+ hb_ot_name_id_t name_id,
+ hb_language_t language,
+ unsigned int *text_size /* IN/OUT */,
+ uint16_t *text /* OUT */)
+{
+ return hb_ot_name_get_utf<hb_utf16_t> (face, name_id, language, text_size, text);
+}
+
+/**
+ * hb_ot_name_get_utf32:
+ * @face: font face.
+ * @name_id: OpenType name identifier to fetch.
+ * @language: language to fetch the name for.
+ * @text_size: (inout) (allow-none): input size of @text buffer, and output size of
+ * text written to buffer.
+ * @text: (out caller-allocates) (array length=text_size): buffer to write fetched name into.
+ *
+ * Fetches a font name from the OpenType 'name' table.
+ * If @language is #HB_LANGUAGE_INVALID, English ("en") is assumed.
+ * Returns string in UTF-32 encoding.
+ *
+ * Returns: full length of the requested string, or 0 if not found.
+ * Since: 2.1.0
+ **/
+unsigned int
+hb_ot_name_get_utf32 (hb_face_t *face,
+ hb_ot_name_id_t name_id,
+ hb_language_t language,
+ unsigned int *text_size /* IN/OUT */,
+ uint32_t *text /* OUT */)
+{
+ return hb_ot_name_get_utf<hb_utf32_t> (face, name_id, language, text_size, text);
+}
+
+
+#endif
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