diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-subset-input.cc')
-rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-subset-input.cc | 694 |
1 files changed, 618 insertions, 76 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-subset-input.cc b/src/3rdparty/harfbuzz-ng/src/hb-subset-input.cc index d92f33ffed..68a3e77788 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-subset-input.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-subset-input.cc @@ -24,45 +24,33 @@ * Google Author(s): Garret Rieger, Rod Sheeter, Behdad Esfahbod */ +#include "hb-subset-instancer-solver.hh" #include "hb-subset.hh" #include "hb-set.hh" +#include "hb-utf.hh" -/** - * hb_subset_input_create_or_fail: - * - * Return value: New subset input. - * - * Since: 1.8.0 - **/ -hb_subset_input_t * -hb_subset_input_create_or_fail () + +hb_subset_input_t::hb_subset_input_t () { - hb_subset_input_t *input = hb_object_create<hb_subset_input_t>(); + for (auto& set : sets_iter ()) + set = hb::shared_ptr<hb_set_t> (hb_set_create ()); - if (unlikely (!input)) - return nullptr; + if (in_error ()) + return; + + flags = HB_SUBSET_FLAGS_DEFAULT; - input->unicodes = hb_set_create (); - input->glyphs = hb_set_create (); - input->name_ids = hb_set_create (); - hb_set_add_range (input->name_ids, 0, 6); - input->drop_tables = hb_set_create (); - input->drop_hints = false; - input->desubroutinize = false; - input->retain_gids = false; + hb_set_add_range (sets.name_ids, 0, 6); + hb_set_add (sets.name_languages, 0x0409); hb_tag_t default_drop_tables[] = { // Layout disabled by default - HB_TAG ('G', 'S', 'U', 'B'), - HB_TAG ('G', 'P', 'O', 'S'), - HB_TAG ('G', 'D', 'E', 'F'), HB_TAG ('m', 'o', 'r', 'x'), HB_TAG ('m', 'o', 'r', 't'), HB_TAG ('k', 'e', 'r', 'x'), HB_TAG ('k', 'e', 'r', 'n'), // Copied from fontTools: - HB_TAG ('B', 'A', 'S', 'E'), HB_TAG ('J', 'S', 'T', 'F'), HB_TAG ('D', 'S', 'I', 'G'), HB_TAG ('E', 'B', 'D', 'T'), @@ -77,132 +65,686 @@ hb_subset_input_create_or_fail () HB_TAG ('G', 'l', 'o', 'c'), HB_TAG ('S', 'i', 'l', 'f'), HB_TAG ('S', 'i', 'l', 'l'), - // Colour - HB_TAG ('s', 'b', 'i', 'x') }; + sets.drop_tables->add_array (default_drop_tables, ARRAY_LENGTH (default_drop_tables)); + + hb_tag_t default_no_subset_tables[] = { + HB_TAG ('g', 'a', 's', 'p'), + HB_TAG ('f', 'p', 'g', 'm'), + HB_TAG ('p', 'r', 'e', 'p'), + HB_TAG ('V', 'D', 'M', 'X'), + HB_TAG ('D', 'S', 'I', 'G'), + }; + sets.no_subset_tables->add_array (default_no_subset_tables, + ARRAY_LENGTH (default_no_subset_tables)); + + //copied from _layout_features_groups in fonttools + hb_tag_t default_layout_features[] = { + // default shaper + // common + HB_TAG ('r', 'v', 'r', 'n'), + HB_TAG ('c', 'c', 'm', 'p'), + HB_TAG ('l', 'i', 'g', 'a'), + HB_TAG ('l', 'o', 'c', 'l'), + HB_TAG ('m', 'a', 'r', 'k'), + HB_TAG ('m', 'k', 'm', 'k'), + HB_TAG ('r', 'l', 'i', 'g'), + + //fractions + HB_TAG ('f', 'r', 'a', 'c'), + HB_TAG ('n', 'u', 'm', 'r'), + HB_TAG ('d', 'n', 'o', 'm'), + + //horizontal + HB_TAG ('c', 'a', 'l', 't'), + HB_TAG ('c', 'l', 'i', 'g'), + HB_TAG ('c', 'u', 'r', 's'), + HB_TAG ('k', 'e', 'r', 'n'), + HB_TAG ('r', 'c', 'l', 't'), + + //vertical + HB_TAG ('v', 'a', 'l', 't'), + HB_TAG ('v', 'e', 'r', 't'), + HB_TAG ('v', 'k', 'r', 'n'), + HB_TAG ('v', 'p', 'a', 'l'), + HB_TAG ('v', 'r', 't', '2'), + + //ltr + HB_TAG ('l', 't', 'r', 'a'), + HB_TAG ('l', 't', 'r', 'm'), + + //rtl + HB_TAG ('r', 't', 'l', 'a'), + HB_TAG ('r', 't', 'l', 'm'), + + //random + HB_TAG ('r', 'a', 'n', 'd'), + + //justify + HB_TAG ('j', 'a', 'l', 't'), // HarfBuzz doesn't use; others might + + //East Asian spacing + HB_TAG ('c', 'h', 'w', 's'), + HB_TAG ('v', 'c', 'h', 'w'), + HB_TAG ('h', 'a', 'l', 't'), + HB_TAG ('v', 'h', 'a', 'l'), + + //private + HB_TAG ('H', 'a', 'r', 'f'), + HB_TAG ('H', 'A', 'R', 'F'), + HB_TAG ('B', 'u', 'z', 'z'), + HB_TAG ('B', 'U', 'Z', 'Z'), + + //shapers + + //arabic + HB_TAG ('i', 'n', 'i', 't'), + HB_TAG ('m', 'e', 'd', 'i'), + HB_TAG ('f', 'i', 'n', 'a'), + HB_TAG ('i', 's', 'o', 'l'), + HB_TAG ('m', 'e', 'd', '2'), + HB_TAG ('f', 'i', 'n', '2'), + HB_TAG ('f', 'i', 'n', '3'), + HB_TAG ('c', 's', 'w', 'h'), + HB_TAG ('m', 's', 'e', 't'), + HB_TAG ('s', 't', 'c', 'h'), + + //hangul + HB_TAG ('l', 'j', 'm', 'o'), + HB_TAG ('v', 'j', 'm', 'o'), + HB_TAG ('t', 'j', 'm', 'o'), + + //tibetan + HB_TAG ('a', 'b', 'v', 's'), + HB_TAG ('b', 'l', 'w', 's'), + HB_TAG ('a', 'b', 'v', 'm'), + HB_TAG ('b', 'l', 'w', 'm'), + + //indic + HB_TAG ('n', 'u', 'k', 't'), + HB_TAG ('a', 'k', 'h', 'n'), + HB_TAG ('r', 'p', 'h', 'f'), + HB_TAG ('r', 'k', 'r', 'f'), + HB_TAG ('p', 'r', 'e', 'f'), + HB_TAG ('b', 'l', 'w', 'f'), + HB_TAG ('h', 'a', 'l', 'f'), + HB_TAG ('a', 'b', 'v', 'f'), + HB_TAG ('p', 's', 't', 'f'), + HB_TAG ('c', 'f', 'a', 'r'), + HB_TAG ('v', 'a', 't', 'u'), + HB_TAG ('c', 'j', 'c', 't'), + HB_TAG ('i', 'n', 'i', 't'), + HB_TAG ('p', 'r', 'e', 's'), + HB_TAG ('a', 'b', 'v', 's'), + HB_TAG ('b', 'l', 'w', 's'), + HB_TAG ('p', 's', 't', 's'), + HB_TAG ('h', 'a', 'l', 'n'), + HB_TAG ('d', 'i', 's', 't'), + HB_TAG ('a', 'b', 'v', 'm'), + HB_TAG ('b', 'l', 'w', 'm'), + }; + + sets.layout_features->add_array (default_layout_features, ARRAY_LENGTH (default_layout_features)); + + sets.layout_scripts->invert (); // Default to all scripts. +} + +/** + * hb_subset_input_create_or_fail: + * + * Creates a new subset input object. + * + * Return value: (transfer full): New subset input, or `NULL` if failed. Destroy + * with hb_subset_input_destroy(). + * + * Since: 1.8.0 + **/ +hb_subset_input_t * +hb_subset_input_create_or_fail (void) +{ + hb_subset_input_t *input = hb_object_create<hb_subset_input_t>(); + + if (unlikely (!input)) + return nullptr; - input->drop_tables->add_array (default_drop_tables, ARRAY_LENGTH (default_drop_tables)); + if (input->in_error ()) + { + hb_subset_input_destroy (input); + return nullptr; + } return input; } /** * hb_subset_input_reference: (skip) - * @subset_input: a subset_input. - * + * @input: a #hb_subset_input_t object. * + * Increases the reference count on @input. * - * Return value: + * Return value: @input. * * Since: 1.8.0 **/ hb_subset_input_t * -hb_subset_input_reference (hb_subset_input_t *subset_input) +hb_subset_input_reference (hb_subset_input_t *input) { - return hb_object_reference (subset_input); + return hb_object_reference (input); } /** * hb_subset_input_destroy: - * @subset_input: a subset_input. + * @input: a #hb_subset_input_t object. + * + * Decreases the reference count on @input, and if it reaches zero, destroys + * @input, freeing all memory. * * Since: 1.8.0 **/ void -hb_subset_input_destroy (hb_subset_input_t *subset_input) +hb_subset_input_destroy (hb_subset_input_t *input) { - if (!hb_object_destroy (subset_input)) return; - - hb_set_destroy (subset_input->unicodes); - hb_set_destroy (subset_input->glyphs); - hb_set_destroy (subset_input->name_ids); - hb_set_destroy (subset_input->drop_tables); + if (!hb_object_destroy (input)) return; - free (subset_input); + hb_free (input); } /** * hb_subset_input_unicode_set: - * @subset_input: a subset_input. + * @input: a #hb_subset_input_t object. + * + * Gets the set of Unicode code points to retain, the caller should modify the + * set as needed. + * + * Return value: (transfer none): pointer to the #hb_set_t of Unicode code + * points. * * Since: 1.8.0 **/ HB_EXTERN hb_set_t * -hb_subset_input_unicode_set (hb_subset_input_t *subset_input) +hb_subset_input_unicode_set (hb_subset_input_t *input) { - return subset_input->unicodes; + return input->sets.unicodes; } /** * hb_subset_input_glyph_set: - * @subset_input: a subset_input. + * @input: a #hb_subset_input_t object. + * + * Gets the set of glyph IDs to retain, the caller should modify the set as + * needed. + * + * Return value: (transfer none): pointer to the #hb_set_t of glyph IDs. * * Since: 1.8.0 **/ HB_EXTERN hb_set_t * -hb_subset_input_glyph_set (hb_subset_input_t *subset_input) +hb_subset_input_glyph_set (hb_subset_input_t *input) { - return subset_input->glyphs; + return input->sets.glyphs; } +/** + * hb_subset_input_set: + * @input: a #hb_subset_input_t object. + * @set_type: a #hb_subset_sets_t set type. + * + * Gets the set of the specified type. + * + * Return value: (transfer none): pointer to the #hb_set_t of the specified type. + * + * Since: 2.9.1 + **/ HB_EXTERN hb_set_t * -hb_subset_input_nameid_set (hb_subset_input_t *subset_input) +hb_subset_input_set (hb_subset_input_t *input, hb_subset_sets_t set_type) { - return subset_input->name_ids; + return input->sets_iter () [set_type]; } -HB_EXTERN hb_set_t * -hb_subset_input_drop_tables_set (hb_subset_input_t *subset_input) +/** + * hb_subset_input_get_flags: + * @input: a #hb_subset_input_t object. + * + * Gets all of the subsetting flags in the input object. + * + * Return value: the subsetting flags bit field. + * + * Since: 2.9.0 + **/ +HB_EXTERN hb_subset_flags_t +hb_subset_input_get_flags (hb_subset_input_t *input) { - return subset_input->drop_tables; + return (hb_subset_flags_t) input->flags; } +/** + * hb_subset_input_set_flags: + * @input: a #hb_subset_input_t object. + * @value: bit field of flags + * + * Sets all of the flags in the input object to the values specified by the bit + * field. + * + * Since: 2.9.0 + **/ HB_EXTERN void -hb_subset_input_set_drop_hints (hb_subset_input_t *subset_input, - hb_bool_t drop_hints) +hb_subset_input_set_flags (hb_subset_input_t *input, + unsigned value) +{ + input->flags = (hb_subset_flags_t) value; +} + +/** + * hb_subset_input_set_user_data: (skip) + * @input: a #hb_subset_input_t object. + * @key: The user-data key to set + * @data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key + * + * Attaches a user-data key/data pair to the given subset input object. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 2.9.0 + **/ +hb_bool_t +hb_subset_input_set_user_data (hb_subset_input_t *input, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (input, key, data, destroy, replace); +} + +/** + * hb_subset_input_get_user_data: (skip) + * @input: a #hb_subset_input_t object. + * @key: The user-data key to query + * + * Fetches the user data associated with the specified key, + * attached to the specified subset input object. + * + * Return value: (transfer none): A pointer to the user data + * + * Since: 2.9.0 + **/ +void * +hb_subset_input_get_user_data (const hb_subset_input_t *input, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (input, key); +} + +/** + * hb_subset_input_keep_everything: + * @input: a #hb_subset_input_t object + * + * Configure input object to keep everything in the font face. + * That is, all Unicodes, glyphs, names, layout items, + * glyph names, etc. + * + * The input can be tailored afterwards by the caller. + * + * Since: 7.0.0 + */ +void +hb_subset_input_keep_everything (hb_subset_input_t *input) { - subset_input->drop_hints = drop_hints; + const hb_subset_sets_t indices[] = {HB_SUBSET_SETS_UNICODE, + HB_SUBSET_SETS_GLYPH_INDEX, + HB_SUBSET_SETS_NAME_ID, + HB_SUBSET_SETS_NAME_LANG_ID, + HB_SUBSET_SETS_LAYOUT_FEATURE_TAG, + HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG}; + + for (auto idx : hb_iter (indices)) + { + hb_set_t *set = hb_subset_input_set (input, idx); + hb_set_clear (set); + hb_set_invert (set); + } + + // Don't drop any tables + hb_set_clear (hb_subset_input_set (input, HB_SUBSET_SETS_DROP_TABLE_TAG)); + + hb_subset_input_set_flags (input, + HB_SUBSET_FLAGS_NOTDEF_OUTLINE | + HB_SUBSET_FLAGS_GLYPH_NAMES | + HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES | + HB_SUBSET_FLAGS_PASSTHROUGH_UNRECOGNIZED); } +#ifndef HB_NO_VAR +/** + * hb_subset_input_pin_all_axes_to_default: (skip) + * @input: a #hb_subset_input_t object. + * @face: a #hb_face_t object. + * + * Pin all axes to default locations in the given subset input object. + * + * All axes in a font must be pinned. Additionally, `CFF2` table, if present, + * will be de-subroutinized. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 8.3.1 + **/ HB_EXTERN hb_bool_t -hb_subset_input_get_drop_hints (hb_subset_input_t *subset_input) +hb_subset_input_pin_all_axes_to_default (hb_subset_input_t *input, + hb_face_t *face) { - return subset_input->drop_hints; + unsigned axis_count = hb_ot_var_get_axis_count (face); + if (!axis_count) return false; + + hb_ot_var_axis_info_t *axis_infos = (hb_ot_var_axis_info_t *) hb_calloc (axis_count, sizeof (hb_ot_var_axis_info_t)); + if (unlikely (!axis_infos)) return false; + + (void) hb_ot_var_get_axis_infos (face, 0, &axis_count, axis_infos); + + for (unsigned i = 0; i < axis_count; i++) + { + hb_tag_t axis_tag = axis_infos[i].tag; + float default_val = axis_infos[i].default_value; + if (!input->axes_location.set (axis_tag, Triple (default_val, default_val, default_val))) + { + hb_free (axis_infos); + return false; + } + } + hb_free (axis_infos); + return true; } -HB_EXTERN void -hb_subset_input_set_desubroutinize (hb_subset_input_t *subset_input, - hb_bool_t desubroutinize) +/** + * hb_subset_input_pin_axis_to_default: (skip) + * @input: a #hb_subset_input_t object. + * @face: a #hb_face_t object. + * @axis_tag: Tag of the axis to be pinned + * + * Pin an axis to its default location in the given subset input object. + * + * All axes in a font must be pinned. Additionally, `CFF2` table, if present, + * will be de-subroutinized. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 6.0.0 + **/ +HB_EXTERN hb_bool_t +hb_subset_input_pin_axis_to_default (hb_subset_input_t *input, + hb_face_t *face, + hb_tag_t axis_tag) { - subset_input->desubroutinize = desubroutinize; + hb_ot_var_axis_info_t axis_info; + if (!hb_ot_var_find_axis_info (face, axis_tag, &axis_info)) + return false; + + float default_val = axis_info.default_value; + return input->axes_location.set (axis_tag, Triple (default_val, default_val, default_val)); } +/** + * hb_subset_input_pin_axis_location: (skip) + * @input: a #hb_subset_input_t object. + * @face: a #hb_face_t object. + * @axis_tag: Tag of the axis to be pinned + * @axis_value: Location on the axis to be pinned at + * + * Pin an axis to a fixed location in the given subset input object. + * + * All axes in a font must be pinned. Additionally, `CFF2` table, if present, + * will be de-subroutinized. + * + * Return value: `true` if success, `false` otherwise + * + * Since: 6.0.0 + **/ HB_EXTERN hb_bool_t -hb_subset_input_get_desubroutinize (hb_subset_input_t *subset_input) +hb_subset_input_pin_axis_location (hb_subset_input_t *input, + hb_face_t *face, + hb_tag_t axis_tag, + float axis_value) { - return subset_input->desubroutinize; + hb_ot_var_axis_info_t axis_info; + if (!hb_ot_var_find_axis_info (face, axis_tag, &axis_info)) + return false; + + float val = hb_clamp(axis_value, axis_info.min_value, axis_info.max_value); + return input->axes_location.set (axis_tag, Triple (val, val, val)); } +#ifdef HB_EXPERIMENTAL_API /** - * hb_subset_input_set_retain_gids: - * @subset_input: a subset_input. - * @retain_gids: If true the subsetter will not renumber glyph ids. - * Since: 2.4.0 + * hb_subset_input_set_axis_range: (skip) + * @input: a #hb_subset_input_t object. + * @face: a #hb_face_t object. + * @axis_tag: Tag of the axis + * @axis_min_value: Minimum value of the axis variation range to set, if NaN the existing min will be used. + * @axis_max_value: Maximum value of the axis variation range to set if NaN the existing max will be used. + * @axis_def_value: Default value of the axis variation range to set, if NaN the existing default will be used. + * + * Restricting the range of variation on an axis in the given subset input object. + * New min/default/max values will be clamped if they're not within the fvar axis range. + * + * If the fvar axis default value is not within the new range, the new default + * value will be changed to the new min or max value, whichever is closer to the fvar + * axis default. + * + * Note: input min value can not be bigger than input max value. If the input + * default value is not within the new min/max range, it'll be clamped. + * Note: currently it supports gvar and cvar tables only. + * + * Return value: `true` if success, `false` otherwise + * + * XSince: EXPERIMENTAL **/ -HB_EXTERN void -hb_subset_input_set_retain_gids (hb_subset_input_t *subset_input, - hb_bool_t retain_gids) +HB_EXTERN hb_bool_t +hb_subset_input_set_axis_range (hb_subset_input_t *input, + hb_face_t *face, + hb_tag_t axis_tag, + float axis_min_value, + float axis_max_value, + float axis_def_value) +{ + hb_ot_var_axis_info_t axis_info; + if (!hb_ot_var_find_axis_info (face, axis_tag, &axis_info)) + return false; + + float min = !std::isnan(axis_min_value) ? axis_min_value : axis_info.min_value; + float max = !std::isnan(axis_max_value) ? axis_max_value : axis_info.max_value; + float def = !std::isnan(axis_def_value) ? axis_def_value : axis_info.default_value; + + if (min > max) + return false; + + float new_min_val = hb_clamp(min, axis_info.min_value, axis_info.max_value); + float new_max_val = hb_clamp(max, axis_info.min_value, axis_info.max_value); + float new_default_val = hb_clamp(def, new_min_val, new_max_val); + return input->axes_location.set (axis_tag, Triple (new_min_val, new_default_val, new_max_val)); +} + +/** + * hb_subset_input_get_axis_range: (skip) + * @input: a #hb_subset_input_t object. + * @axis_tag: Tag of the axis + * @axis_min_value: Set to the previously configured minimum value of the axis variation range. + * @axis_max_value: Set to the previously configured maximum value of the axis variation range. + * @axis_def_value: Set to the previously configured default value of the axis variation range. + * + * Gets the axis range assigned by previous calls to hb_subset_input_set_axis_range. + * + * Return value: `true` if a range has been set for this axis tag, `false` otherwise. + * + * XSince: EXPERIMENTAL + **/ +HB_EXTERN hb_bool_t +hb_subset_input_get_axis_range (hb_subset_input_t *input, + hb_tag_t axis_tag, + float *axis_min_value, + float *axis_max_value, + float *axis_def_value) + { - subset_input->retain_gids = retain_gids; + Triple* triple; + if (!input->axes_location.has(axis_tag, &triple)) { + return false; + } + + *axis_min_value = triple->minimum; + *axis_def_value = triple->middle; + *axis_max_value = triple->maximum; + return true; } +#endif +#endif /** - * hb_subset_input_get_retain_gids: - * Returns: value of retain_gids. - * Since: 2.4.0 + * hb_subset_preprocess: + * @source: a #hb_face_t object. + * + * Preprocesses the face and attaches data that will be needed by the + * subsetter. Future subsetting operations can then use the precomputed data + * to speed up the subsetting operation. + * + * See [subset-preprocessing](https://github.com/harfbuzz/harfbuzz/blob/main/docs/subset-preprocessing.md) + * for more information. + * + * Note: the preprocessed face may contain sub-blobs that reference the memory + * backing the source #hb_face_t. Therefore in the case that this memory is not + * owned by the source face you will need to ensure that memory lives + * as long as the returned #hb_face_t. + * + * Returns: a new #hb_face_t. + * + * Since: 6.0.0 + **/ + +HB_EXTERN hb_face_t * +hb_subset_preprocess (hb_face_t *source) +{ + hb_subset_input_t* input = hb_subset_input_create_or_fail (); + if (!input) + return hb_face_reference (source); + + hb_subset_input_keep_everything (input); + + input->attach_accelerator_data = true; + + // Always use long loca in the preprocessed version. This allows + // us to store the glyph bytes unpadded which allows the future subset + // operation to run faster by skipping the trim padding step. + input->force_long_loca = true; + + hb_face_t* new_source = hb_subset_or_fail (source, input); + hb_subset_input_destroy (input); + + if (!new_source) { + DEBUG_MSG (SUBSET, nullptr, "Preprocessing failed due to subset failure."); + return hb_face_reference (source); + } + + return new_source; +} + +/** + * hb_subset_input_old_to_new_glyph_mapping: + * @input: a #hb_subset_input_t object. + * + * Returns a map which can be used to provide an explicit mapping from old to new glyph + * id's in the produced subset. The caller should populate the map as desired. + * If this map is left empty then glyph ids will be automatically mapped to new + * values by the subsetter. If populated, the mapping must be unique. That + * is no two original glyph ids can be mapped to the same new id. + * Additionally, if a mapping is provided then the retain gids option cannot + * be enabled. + * + * Any glyphs that are retained in the subset which are not specified + * in this mapping will be assigned glyph ids after the highest glyph + * id in the mapping. + * + * Note: this will accept and apply non-monotonic mappings, however this + * may result in unsorted Coverage tables. Such fonts may not work for all + * use cases (for example ots will reject unsorted coverage tables). So it's + * recommended, if possible, to supply a monotonic mapping. + * + * Return value: (transfer none): pointer to the #hb_map_t of the custom glyphs ID map. + * + * Since: 7.3.0 + **/ +HB_EXTERN hb_map_t* +hb_subset_input_old_to_new_glyph_mapping (hb_subset_input_t *input) +{ + return &input->glyph_map; +} + +#ifdef HB_EXPERIMENTAL_API +/** + * hb_subset_input_override_name_table: + * @input: a #hb_subset_input_t object. + * @name_id: name_id of a nameRecord + * @platform_id: platform ID of a nameRecord + * @encoding_id: encoding ID of a nameRecord + * @language_id: language ID of a nameRecord + * @name_str: pointer to name string new value or null to indicate should remove + * @str_len: the size of @name_str, or -1 if it is `NULL`-terminated + * + * Override the name string of the NameRecord identified by name_id, + * platform_id, encoding_id and language_id. If a record with that name_id + * doesn't exist, create it and insert to the name table. + * + * Note: for mac platform, we only support name_str with all ascii characters, + * name_str with non-ascii characters will be ignored. + * + * XSince: EXPERIMENTAL **/ HB_EXTERN hb_bool_t -hb_subset_input_get_retain_gids (hb_subset_input_t *subset_input) +hb_subset_input_override_name_table (hb_subset_input_t *input, + hb_ot_name_id_t name_id, + unsigned platform_id, + unsigned encoding_id, + unsigned language_id, + const char *name_str, + int str_len /* -1 means nul-terminated */) { - return subset_input->retain_gids; + if (!name_str) + { + str_len = 0; + } + else if (str_len == -1) + { + str_len = strlen (name_str); + } + + hb_bytes_t name_bytes (nullptr, 0); + if (str_len) + { + if (platform_id == 1) + { + const uint8_t *src = reinterpret_cast<const uint8_t*> (name_str); + const uint8_t *src_end = src + str_len; + + hb_codepoint_t unicode; + const hb_codepoint_t replacement = HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT; + while (src < src_end) + { + src = hb_utf8_t::next (src, src_end, &unicode, replacement); + if (unicode >= 0x0080u) + { + printf ("Non-ascii character detected, ignored...This API supports acsii characters only for mac platform\n"); + return false; + } + } + } + char *override_name = (char *) hb_malloc (str_len); + if (unlikely (!override_name)) return false; + + hb_memcpy (override_name, name_str, str_len); + name_bytes = hb_bytes_t (override_name, str_len); + } + input->name_table_overrides.set (hb_ot_name_record_ids_t (platform_id, encoding_id, language_id, name_id), name_bytes); + return true; } + +#endif |