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/* GRAPHITE2 LICENSING
Copyright 2018, SIL International
All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of License, or
(at your option) any later version.
This program 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
Lesser General Public License for more details.
You should also have received a copy of the GNU Lesser General Public
License along with this library in the file named "LICENSE".
If not, write to the Free Software Foundation, 51 Franklin Street,
Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
internet at http://www.fsf.org/licenses/lgpl.html.
Alternatively, the contents of this file may be used under the terms of the
Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
License, as published by the Free Software Foundation, either version 2
of the License or (at your option) any later version.
*/
#include <graphite2/Segment.h>
#include "graphite-fuzzer.hpp"
#pragma pack(push,1)
struct segment_parameters : public common_parameters
{
uint8_t direction = 0;
uint8_t test_text[128] = "Hello World!စက္ခုန္ဒ";
};
#pragma pack(pop)
// This fuzzer target tests Segment API, and by necesity parts of the Font API
// This includes the entire gr_cinfo_* and gr_slot_* family of functions
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
test_case<segment_parameters> test(data, size);
auto face = gr_make_face_with_ops(&test.ttf, &test.ttf, gr_face_default);
auto font = gr_make_font(12, face);
const size_t n_chars = gr_count_unicode_characters(gr_encform(test.params.encoding),
test.params.test_text,
test.params.test_text + sizeof test.params.test_text,
nullptr);
auto seg = gr_make_seg(font, face, test.params.script_tag, nullptr,
gr_encform(test.params.encoding),
test.params.test_text, n_chars,
test.params.direction);
if (seg)
{
// Test gr_seg_* family
gr_seg_advance_X(seg);
gr_seg_advance_Y(seg);
// Test gr_char_info API here.
const auto n_cinfos = gr_seg_n_cinfo(seg);
for (auto i = 0u; i < n_cinfos; ++i)
{
const auto ci = gr_seg_cinfo(seg, i);
gr_cinfo_unicode_char(ci);
gr_cinfo_base(ci);
gr_cinfo_break_weight(ci);
gr_cinfo_after(ci);
gr_cinfo_before(ci);
}
const auto n_slots = gr_seg_n_slots(seg);
for (auto s = gr_seg_first_slot(seg); s; s = gr_slot_next_in_segment(s))
{
gr_slot_attached_to(s);
gr_slot_first_attachment(s);
gr_slot_next_sibling_attachment(s);
gr_slot_gid(s);
gr_slot_origin_X(s);
gr_slot_origin_Y(s);
gr_slot_advance_X(s, face, font);
gr_slot_advance_Y(s, face, font);
gr_slot_before(s);
gr_slot_after(s);
gr_slot_index(s);
gr_slot_can_insert_before(s);
gr_slot_original(s);
}
auto params = test.get_slot_attr_parameters(n_slots);
if (params)
{
auto n_params = n_slots;
for (auto s = gr_seg_first_slot(seg); s && n_params; s = gr_slot_next_in_segment(s))
{
auto && p = params[--n_params];
gr_slot_attr(s, seg, gr_attrCode(p.index), p.subindex);
}
}
#if 0
if (n_slots >= 16)
{
auto s = gr_seg_last_slot(seg);
for (auto n = n_slots/2; n && s; --n, s = gr_slot_prev_in_segment(s));
auto sp = gr_slot_prev_in_segment(s);
gr_slot_linebreak_before(const_cast<gr_slot *>(s));
gr_seg_justify(seg, gr_seg_first_slot(seg), font, 1000,
gr_justCompleteLine, nullptr, sp);
gr_seg_justify(seg, s, font, 1000,
gr_justCompleteLine, s, nullptr);
}
#endif
}
gr_seg_destroy(seg);
gr_font_destroy(font);
gr_face_destroy(face);
return 0;
}
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