[meta] New API, hb_ot_metadata_reference_entry for fetching meta entries
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@ -607,6 +607,12 @@ hb_ot_math_get_min_connector_overlap
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hb_ot_math_get_glyph_assembly
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</SECTION>
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<SECTION>
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<FILE>hb-ot-metadata</FILE>
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hb_ot_metadata_reference_entry
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hb_ot_metadata_t
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</SECTION>
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<SECTION>
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<FILE>hb-ot-metrics</FILE>
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hb_ot_metrics_t
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@ -89,6 +89,7 @@ HB_BASE_sources = \
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hb-ot-math.cc \
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hb-ot-maxp-table.hh \
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hb-ot-meta-table.hh \
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hb-ot-metadata.cc \
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hb-ot-metrics.cc \
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hb-ot-metrics.hh \
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hb-ot-name-language-static.hh \
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@ -194,6 +195,7 @@ HB_BASE_headers = \
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hb-ot-font.h \
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hb-ot-layout.h \
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hb-ot-math.h \
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hb-ot-metadata.h \
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hb-ot-metrics.h \
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hb-ot-name.h \
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hb-ot-shape.h \
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@ -16,6 +16,7 @@
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#include "hb-ot-layout.cc"
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#include "hb-ot-map.cc"
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#include "hb-ot-math.cc"
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#include "hb-ot-metadata.cc"
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#include "hb-ot-metrics.cc"
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#include "hb-ot-name.cc"
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#include "hb-ot-shape-complex-arabic.cc"
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@ -66,6 +66,7 @@
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#define HB_NO_LAYOUT_COLLECT_GLYPHS
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#define HB_NO_LAYOUT_UNUSED
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#define HB_NO_MATH
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#define HB_NO_META
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#define HB_NO_METRICS
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#define HB_NO_MMAP
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#define HB_NO_NAME
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@ -62,7 +62,9 @@ HB_OT_ACCELERATOR (OT, name)
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#ifndef HB_NO_STAT
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HB_OT_TABLE (OT, STAT)
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#endif
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//HB_OT_TABLE (OT, meta)
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#ifndef HB_NO_META
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HB_OT_ACCELERATOR (OT, meta)
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#endif
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/* Vertical layout. */
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HB_OT_TABLE (OT, vhea)
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@ -32,6 +32,7 @@
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#include "hb-ot-cff2-table.hh"
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#include "hb-ot-hmtx-table.hh"
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#include "hb-ot-kern-table.hh"
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#include "hb-ot-meta-table.hh"
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#include "hb-ot-name-table.hh"
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#include "hb-ot-post-table.hh"
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#include "hb-ot-color-cbdt-table.hh"
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@ -48,7 +48,6 @@
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#include "hb-ot-layout-gpos-table.hh"
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#include "hb-ot-layout-base-table.hh" // Just so we compile it; unused otherwise.
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#include "hb-ot-layout-jstf-table.hh" // Just so we compile it; unused otherwise.
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#include "hb-ot-meta-table.hh" // Just so we compile it; unused otherwise.
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#include "hb-ot-name-table.hh"
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#include "hb-ot-os2-table.hh"
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@ -40,6 +40,11 @@ namespace OT {
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struct DataMap
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{
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int cmp (hb_tag_t a) const { return tag.cmp (a); }
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hb_blob_t *reference_entry (hb_blob_t *meta_blob) const
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{ return hb_blob_create_sub_blob (meta_blob, dataZ, dataLength); }
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bool sanitize (hb_sanitize_context_t *c, const void *base) const
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{
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TRACE_SANITIZE (this);
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@ -62,6 +67,19 @@ struct meta
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{
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static constexpr hb_tag_t tableTag = HB_OT_TAG_meta;
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struct accelerator_t
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{
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void init (hb_face_t *face)
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{ table = hb_sanitize_context_t ().reference_table<meta> (face); }
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void fini () { table.destroy (); }
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hb_blob_t *reference_entry (hb_tag_t tag) const
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{ return table->dataMaps.lsearch (tag, Null (DataMap)).reference_entry (table.get_blob ()); }
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private:
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hb_blob_ptr_t<meta> table;
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};
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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@ -83,6 +101,8 @@ struct meta
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DEFINE_SIZE_ARRAY (16, dataMaps);
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};
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struct meta_accelerator_t : meta::accelerator_t {};
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} /* namespace OT */
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@ -0,0 +1,57 @@
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/*
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* Copyright © 2019 Ebrahim Byagowi
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#include "hb.hh"
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#ifndef HB_NO_META
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#include "hb-ot-meta-table.hh"
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/**
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* SECTION:hb-ot-metadata
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* @title: hb-ot-metadata
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* @short_description: OpenType Metadata
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* @include: hb-ot.h
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*
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* Functions for fetching metadata from fonts.
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**/
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/**
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* hb_ot_meta_reference_entry:
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* @face: a #hb_face_t object.
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* @meta_tag: tag of metadata you like to have.
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*
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* It fetches metadata entry of a given tag from a font.
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*
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* Returns: (transfer full): A blob containing the blob.
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*
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* Since: REPLACEME
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**/
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hb_blob_t *
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hb_ot_metadata_reference_entry (hb_face_t *face, hb_ot_metadata_t meta_tag)
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{
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return face->table.meta->reference_entry (meta_tag);
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}
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#endif
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@ -0,0 +1,57 @@
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/*
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* Copyright © 2019 Ebrahim Byagowi
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef HB_OT_H_IN
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#error "Include <hb-ot.h> instead."
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#endif
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#ifndef HB_OT_METADATA_H
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#define HB_OT_METADATA_H
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#include "hb.h"
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HB_BEGIN_DECLS
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/**
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* hb_ot_metadata_t:
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*
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* From https://docs.microsoft.com/en-us/typography/opentype/spec/meta
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*
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* Since: REPLACEME
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**/
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typedef enum {
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/*
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HB_OT_METADATA_APPL = HB_TAG ('a','p','p','l'),
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HB_OT_METADATA_BILD = HB_TAG ('b','i','l','d'),
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*/
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HB_OT_METADATA_DESIGN_LANGUAGES = HB_TAG ('d','l','n','g'),
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HB_OT_METADATA_SUPPORTED_LANGUAGES = HB_TAG ('s','l','n','g')
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} hb_ot_metadata_t;
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HB_EXTERN hb_blob_t *
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hb_ot_metadata_reference_entry (hb_face_t *face, hb_ot_metadata_t tag);
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HB_END_DECLS
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#endif /* HB_OT_METADATA_H */
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@ -35,6 +35,7 @@
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#include "hb-ot-font.h"
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#include "hb-ot-layout.h"
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#include "hb-ot-math.h"
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#include "hb-ot-metadata.h"
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#include "hb-ot-metrics.h"
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#include "hb-ot-name.h"
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#include "hb-ot-shape.h"
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@ -84,6 +84,7 @@ TEST_PROGS += \
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test-ot-color \
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test-ot-ligature-carets \
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test-ot-name \
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test-ot-metadata \
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test-ot-metrics \
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test-ot-tag \
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test-ot-extents-cff \
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Binary file not shown.
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@ -0,0 +1,58 @@
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/*
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* Copyright © 2019 Ebrahim Byagowi
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#include "hb-test.h"
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#include <hb-ot.h>
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/* Unit tests for hb-ot-metadata.h */
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static void
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test_ot_metadata_reference_entry (void)
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{
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hb_face_t *face = hb_test_open_font_file ("fonts/meta.ttf");
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hb_blob_t *dlng = hb_ot_metadata_reference_entry (face, HB_OT_METADATA_DESIGN_LANGUAGES);
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g_assert_cmpint (hb_blob_get_length (dlng), ==, 8);
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g_assert_cmpmem (hb_blob_get_data (dlng, NULL), 8, "ar,de,fa", 8);
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hb_blob_destroy (dlng);
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hb_blob_t *fslf = hb_ot_metadata_reference_entry (face, (hb_ot_metadata_t) HB_TAG ('f','s','l','f'));
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g_assert_cmpint (hb_blob_get_length (fslf), ==, 12);
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hb_blob_destroy (fslf);
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hb_blob_t *nacl = hb_ot_metadata_reference_entry (face, (hb_ot_metadata_t) HB_TAG ('n','a','c','l'));
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g_assert_cmpint (hb_blob_get_length (nacl), ==, 0);
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hb_blob_destroy (nacl);
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hb_blob_t *slng = hb_ot_metadata_reference_entry (face, HB_OT_METADATA_SUPPORTED_LANGUAGES);
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g_assert_cmpint (hb_blob_get_length (slng), ==, 11);
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g_assert_cmpmem (hb_blob_get_data (slng, NULL), 11, "ar,de,en,fa", 11);
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hb_blob_destroy (slng);
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hb_face_destroy (face);
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}
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int
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main (int argc, char **argv)
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{
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hb_test_init (&argc, &argv);
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hb_test_add (test_ot_metadata_reference_entry);
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return hb_test_run ();
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}
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