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https://github.com/love2d/megasource.git
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update harfbuzz to 10.1.0
This commit is contained in:
Sasha Szpakowski
@@ -0,0 +1,221 @@
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/*
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* Copyright © 2023 Google, Inc.
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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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* Google Author(s): Garret Rieger
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*/
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#ifndef HELPER_SUBSET_HH
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#define HELPER_SUBSET_HH
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#include "glib.h"
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#include <errno.h>
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#include <math.h>
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#include <stdbool.h>
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#include "hb-subset.h"
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#ifndef HB_NO_VAR
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// Parses an axis position string and sets min, default, and max to
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// the requested values. If a value should be set to it's default value
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// then it will be set to NaN.
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static gboolean
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parse_axis_position(const char* s,
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float* min,
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float* def,
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float* max,
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gboolean* drop,
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GError **error)
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{
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const char* part = strpbrk(s, ":");
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*drop = false;
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if (!part) {
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// Single value.
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if (strcmp (s, "drop") == 0)
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{
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*min = NAN;
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*def = NAN;
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*max = NAN;
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*drop = true;
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return true;
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}
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errno = 0;
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char *p;
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float axis_value = strtof (s, &p);
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if (errno || s == p)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed parsing axis value at: '%s'", s);
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return false;
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}
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*min = axis_value;
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*def = axis_value;
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*max = axis_value;
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return true;
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}
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float values[3];
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int count = 0;
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for (int i = 0; i < 3; i++) {
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errno = 0;
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count++;
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if (!*s || part == s) {
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values[i] = NAN;
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if (part == NULL) break;
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s = part + 1;
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part = strpbrk(s, ":");
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continue;
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}
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char *pend;
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values[i] = strtof (s, &pend);
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if (errno || s == pend || (part && pend != part))
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed parsing axis value at: '%s'", s);
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return false;
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}
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if (part == NULL) break;
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s = pend + 1;
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part = strpbrk(s, ":");
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}
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if (count == 2) {
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*min = values[0];
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*def = NAN;
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*max = values[1];
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return true;
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} else if (count == 3) {
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*min = values[0];
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*def = values[1];
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*max = values[2];
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return true;
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}
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed parsing axis value at: '%s'", s);
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return false;
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}
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static gboolean
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parse_instancing_spec (const char *arg,
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hb_face_t* face,
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hb_subset_input_t* input,
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GError **error)
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{
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char* s;
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while ((s = strtok((char *) arg, "=")))
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{
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arg = NULL;
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unsigned len = strlen (s);
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if (len > 4) //Axis tags are 4 bytes.
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed parsing axis tag at: '%s'", s);
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return false;
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}
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/* support *=drop */
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if (0 == strcmp (s, "*"))
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{
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s = strtok(NULL, ", ");
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if (0 != strcmp (s, "drop"))
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed parsing axis position at: '%s'", s);
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return false;
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}
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if (!hb_subset_input_pin_all_axes_to_default (input, face))
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed pinning all axes to default.");
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return false;
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}
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continue;
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}
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hb_tag_t axis_tag = hb_tag_from_string (s, len);
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s = strtok(NULL, ", ");
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if (!s)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Value not specified for axis: %c%c%c%c", HB_UNTAG (axis_tag));
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return false;
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}
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gboolean drop;
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float min, def, max;
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if (!parse_axis_position(s, &min, &def, &max, &drop, error))
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return false;
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if (drop)
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{
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if (!hb_subset_input_pin_axis_to_default (input,
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face,
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axis_tag))
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Cannot pin axis: '%c%c%c%c', not present in fvar", HB_UNTAG (axis_tag));
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return false;
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}
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continue;
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}
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if (min == def && def == max) {
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if (!hb_subset_input_pin_axis_location (input,
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face, axis_tag,
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def))
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Cannot pin axis: '%c%c%c%c', not present in fvar", HB_UNTAG (axis_tag));
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return false;
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}
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continue;
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}
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if (!hb_subset_input_set_axis_range (input,
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face, axis_tag,
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min, max, def))
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Cannot pin axis: '%c%c%c%c', not present in fvar", HB_UNTAG (axis_tag));
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return false;
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}
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continue;
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Partial instancing is not supported.");
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return false;
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}
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return true;
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}
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#endif
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#endif
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