HarfBuzz text shaping engine
http://harfbuzz.github.io/
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62 lines
1.8 KiB
62 lines
1.8 KiB
#include "hb-fuzzer.hh" |
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#include <hb-ot.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#define TEST_OT_FACE_NO_MAIN 1 |
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#include "../api/test-ot-face.c" |
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#undef TEST_OT_FACE_NO_MAIN |
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extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size) |
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{ |
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alloc_state = size; /* see src/failing-alloc.c */ |
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hb_blob_t *blob = hb_blob_create ((const char *)data, size, |
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HB_MEMORY_MODE_READONLY, nullptr, nullptr); |
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hb_face_t *face = hb_face_create (blob, 0); |
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hb_font_t *font = hb_font_create (face); |
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hb_ot_font_set_funcs (font); |
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hb_font_set_scale (font, 12, 12); |
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unsigned num_coords = 0; |
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if (size) num_coords = data[size - 1]; |
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num_coords = hb_ot_var_get_axis_count (face) > num_coords ? num_coords : hb_ot_var_get_axis_count (face); |
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int *coords = (int *) calloc (num_coords, sizeof (int)); |
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if (size > num_coords + 1) |
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for (unsigned i = 0; i < num_coords; ++i) |
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coords[i] = ((int) data[size - num_coords + i - 1] - 128) * 10; |
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hb_font_set_var_coords_normalized (font, coords, num_coords); |
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free (coords); |
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{ |
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const char text[] = "ABCDEXYZ123@_%&)*$!"; |
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hb_buffer_t *buffer = hb_buffer_create (); |
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hb_buffer_add_utf8 (buffer, text, -1, 0, -1); |
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hb_buffer_guess_segment_properties (buffer); |
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hb_shape (font, buffer, nullptr, 0); |
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hb_buffer_destroy (buffer); |
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} |
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uint32_t text32[16] = {0}; |
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unsigned int len = sizeof (text32); |
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if (size < len) |
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len = size; |
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if (len) |
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memcpy (text32, data + size - len, len); |
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/* Misc calls on font. */ |
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text32[10] = test_font (font, text32[15]) % 256; |
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hb_buffer_t *buffer = hb_buffer_create (); |
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hb_buffer_add_utf32 (buffer, text32, sizeof (text32) / sizeof (text32[0]), 0, -1); |
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hb_buffer_guess_segment_properties (buffer); |
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hb_shape (font, buffer, nullptr, 0); |
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hb_buffer_destroy (buffer); |
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hb_font_destroy (font); |
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hb_face_destroy (face); |
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hb_blob_destroy (blob); |
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return 0; |
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}
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