#include <string.h>
-HB_BEGIN_DECLS
-static hb_buffer_t _hb_buffer_nil = {
- HB_OBJECT_HEADER_STATIC,
+#ifndef HB_DEBUG_BUFFER
+#define HB_DEBUG_BUFFER (HB_DEBUG+0)
+#endif
- &_hb_unicode_funcs_default,
- {
- HB_DIRECTION_INVALID,
- HB_SCRIPT_INVALID,
- NULL,
- },
-
- TRUE, /* in_error */
- TRUE, /* have_output */
- TRUE /* have_positions */
-};
+#define _HB_BUFFER_UNICODE_FUNCS_DEFAULT (const_cast<hb_unicode_funcs_t *> (&_hb_unicode_funcs_default))
+#define _HB_BUFFER_PROPS_DEFAULT { HB_DIRECTION_INVALID, HB_SCRIPT_INVALID, HB_LANGUAGE_INVALID }
/* Here is how the buffer works internally:
*
* As an optimization, both info and out_info may point to the
* same piece of memory, which is owned by info. This remains the
* case as long as out_len doesn't exceed i at any time.
- * In that case, swap() is no-op and the glyph operations operate
+ * In that case, swap_buffers() is no-op and the glyph operations operate
* mostly in-place.
*
* As soon as out_info gets longer than info, out_info is moved over
* to an alternate buffer (which we reuse the pos buffer for!), and its
* current contents (out_len entries) are copied to the new place.
- * This should all remain transparent to the user. swap() then
+ * This should all remain transparent to the user. swap_buffers() then
* switches info and out_info.
*/
-static hb_bool_t
-_hb_buffer_enlarge (hb_buffer_t *buffer, unsigned int size)
+
+/* Internal API */
+
+bool
+hb_buffer_t::enlarge (unsigned int size)
{
- if (unlikely (buffer->in_error))
- return FALSE;
+ if (unlikely (in_error))
+ return false;
- unsigned int new_allocated = buffer->allocated;
+ unsigned int new_allocated = allocated;
hb_glyph_position_t *new_pos = NULL;
hb_glyph_info_t *new_info = NULL;
- bool separate_out = buffer->out_info != buffer->info;
+ bool separate_out = out_info != info;
- if (unlikely (_hb_unsigned_int_mul_overflows (size, sizeof (buffer->info[0]))))
+ if (unlikely (_hb_unsigned_int_mul_overflows (size, sizeof (info[0]))))
goto done;
while (size > new_allocated)
new_allocated += (new_allocated >> 1) + 32;
- ASSERT_STATIC (sizeof (buffer->info[0]) == sizeof (buffer->pos[0]));
- if (unlikely (_hb_unsigned_int_mul_overflows (new_allocated, sizeof (buffer->info[0]))))
+ ASSERT_STATIC (sizeof (info[0]) == sizeof (pos[0]));
+ if (unlikely (_hb_unsigned_int_mul_overflows (new_allocated, sizeof (info[0]))))
goto done;
- new_pos = (hb_glyph_position_t *) realloc (buffer->pos, new_allocated * sizeof (buffer->pos[0]));
- new_info = (hb_glyph_info_t *) realloc (buffer->info, new_allocated * sizeof (buffer->info[0]));
+ new_pos = (hb_glyph_position_t *) realloc (pos, new_allocated * sizeof (pos[0]));
+ new_info = (hb_glyph_info_t *) realloc (info, new_allocated * sizeof (info[0]));
done:
if (unlikely (!new_pos || !new_info))
- buffer->in_error = TRUE;
+ in_error = true;
if (likely (new_pos))
- buffer->pos = new_pos;
+ pos = new_pos;
if (likely (new_info))
- buffer->info = new_info;
+ info = new_info;
+
+ out_info = separate_out ? (hb_glyph_info_t *) pos : info;
+ if (likely (!in_error))
+ allocated = new_allocated;
+
+ return likely (!in_error);
+}
+
+bool
+hb_buffer_t::make_room_for (unsigned int num_in,
+ unsigned int num_out)
+{
+ if (unlikely (!ensure (out_len + num_out))) return false;
+
+ if (out_info == info &&
+ out_len + num_out > idx + num_in)
+ {
+ assert (have_output);
+
+ out_info = (hb_glyph_info_t *) pos;
+ memcpy (out_info, info, out_len * sizeof (out_info[0]));
+ }
+
+ return true;
+}
+
+void *
+hb_buffer_t::get_scratch_buffer (unsigned int *size)
+{
+ have_output = false;
+ have_positions = false;
+ out_len = 0;
+ *size = allocated * sizeof (pos[0]);
+ return pos;
+}
+
+
+/* HarfBuzz-Internal API */
+
+void
+hb_buffer_t::reset (void)
+{
+ if (unlikely (hb_object_is_inert (this)))
+ return;
+
+ hb_unicode_funcs_destroy (unicode);
+ unicode = _HB_BUFFER_UNICODE_FUNCS_DEFAULT;
+
+ hb_segment_properties_t default_props = _HB_BUFFER_PROPS_DEFAULT;
+ props = default_props;
+
+ in_error = false;
+ have_output = false;
+ have_positions = false;
+
+ idx = 0;
+ len = 0;
+ out_len = 0;
+
+ serial = 0;
+ memset (allocated_var_bytes, 0, sizeof allocated_var_bytes);
+ memset (allocated_var_owner, 0, sizeof allocated_var_owner);
+
+ out_info = info;
+}
+
+void
+hb_buffer_t::add (hb_codepoint_t codepoint,
+ hb_mask_t mask,
+ unsigned int cluster)
+{
+ hb_glyph_info_t *glyph;
+
+ if (unlikely (!ensure (len + 1))) return;
+
+ glyph = &info[len];
+
+ memset (glyph, 0, sizeof (*glyph));
+ glyph->codepoint = codepoint;
+ glyph->mask = mask;
+ glyph->cluster = cluster;
- buffer->out_info = separate_out ? (hb_glyph_info_t *) buffer->pos : buffer->info;
- if (likely (!buffer->in_error))
- buffer->allocated = new_allocated;
+ len++;
+}
+
+void
+hb_buffer_t::clear_output (void)
+{
+ if (unlikely (hb_object_is_inert (this)))
+ return;
+
+ have_output = true;
+ have_positions = false;
+
+ out_len = 0;
+ out_info = info;
+}
+
+void
+hb_buffer_t::clear_positions (void)
+{
+ if (unlikely (hb_object_is_inert (this)))
+ return;
+
+ have_output = false;
+ have_positions = true;
+
+ memset (pos, 0, sizeof (pos[0]) * len);
+}
+
+void
+hb_buffer_t::swap_buffers (void)
+{
+ if (unlikely (in_error)) return;
+
+ assert (have_output);
+ have_output = false;
+
+ if (out_info != info)
+ {
+ hb_glyph_info_t *tmp_string;
+ tmp_string = info;
+ info = out_info;
+ out_info = tmp_string;
+ pos = (hb_glyph_position_t *) out_info;
+ }
+
+ unsigned int tmp;
+ tmp = len;
+ len = out_len;
+ out_len = tmp;
- return likely (!buffer->in_error);
+ idx = 0;
}
-static inline hb_bool_t
-_hb_buffer_ensure (hb_buffer_t *buffer, unsigned int size)
+void
+hb_buffer_t::replace_glyphs_be16 (unsigned int num_in,
+ unsigned int num_out,
+ const uint16_t *glyph_data_be)
{
- return likely (size <= buffer->allocated) ? TRUE : _hb_buffer_enlarge (buffer, size);
+ if (!make_room_for (num_in, num_out)) return;
+
+ hb_glyph_info_t orig_info = info[idx];
+ for (unsigned int i = 1; i < num_in; i++)
+ {
+ hb_glyph_info_t *inf = &info[idx + i];
+ orig_info.cluster = MIN (orig_info.cluster, inf->cluster);
+ }
+
+ hb_glyph_info_t *pinfo = &out_info[out_len];
+ for (unsigned int i = 0; i < num_out; i++)
+ {
+ *pinfo = orig_info;
+ pinfo->codepoint = hb_be_uint16 (glyph_data_be[i]);
+ pinfo++;
+ }
+
+ idx += num_in;
+ out_len += num_out;
}
-static inline hb_bool_t
-_hb_buffer_ensure_separate (hb_buffer_t *buffer, unsigned int size)
+void
+hb_buffer_t::replace_glyphs (unsigned int num_in,
+ unsigned int num_out,
+ const uint32_t *glyph_data)
{
- if (unlikely (!size || !_hb_buffer_ensure (buffer, size))) return FALSE;
+ if (!make_room_for (num_in, num_out)) return;
- if (buffer->out_info == buffer->info)
+ hb_glyph_info_t orig_info = info[idx];
+ for (unsigned int i = 1; i < num_in; i++)
{
- assert (buffer->have_output);
+ hb_glyph_info_t *inf = &info[idx + i];
+ orig_info.cluster = MIN (orig_info.cluster, inf->cluster);
+ }
- buffer->out_info = (hb_glyph_info_t *) buffer->pos;
- memcpy (buffer->out_info, buffer->info, buffer->out_len * sizeof (buffer->out_info[0]));
+ hb_glyph_info_t *pinfo = &out_info[out_len];
+ for (unsigned int i = 0; i < num_out; i++)
+ {
+ *pinfo = orig_info;
+ pinfo->codepoint = glyph_data[i];
+ pinfo++;
}
- return TRUE;
+ idx += num_in;
+ out_len += num_out;
}
+void
+hb_buffer_t::output_glyph (hb_codepoint_t glyph_index)
+{
+ if (!make_room_for (0, 1)) return;
+
+ out_info[out_len] = info[idx];
+ out_info[out_len].codepoint = glyph_index;
+
+ out_len++;
+}
+
+void
+hb_buffer_t::copy_glyph (void)
+{
+ if (!make_room_for (0, 1)) return;
+
+ out_info[out_len] = info[idx];
+
+ out_len++;
+}
+
+void
+hb_buffer_t::replace_glyph (hb_codepoint_t glyph_index)
+{
+ if (!make_room_for (1, 1)) return;
+
+ out_info[out_len] = info[idx];
+ out_info[out_len].codepoint = glyph_index;
+
+ idx++;
+ out_len++;
+}
+
+void
+hb_buffer_t::next_glyph (void)
+{
+ if (have_output)
+ {
+ if (out_info != info)
+ {
+ if (unlikely (!ensure (out_len + 1))) return;
+ out_info[out_len] = info[idx];
+ }
+ else if (out_len != idx)
+ out_info[out_len] = info[idx];
+
+ out_len++;
+ }
+
+ idx++;
+}
+
+void
+hb_buffer_t::set_masks (hb_mask_t value,
+ hb_mask_t mask,
+ unsigned int cluster_start,
+ unsigned int cluster_end)
+{
+ hb_mask_t not_mask = ~mask;
+ value &= mask;
+
+ if (!mask)
+ return;
+
+ if (cluster_start == 0 && cluster_end == (unsigned int)-1) {
+ unsigned int count = len;
+ for (unsigned int i = 0; i < count; i++)
+ info[i].mask = (info[i].mask & not_mask) | value;
+ return;
+ }
+
+ unsigned int count = len;
+ for (unsigned int i = 0; i < count; i++)
+ if (cluster_start <= info[i].cluster && info[i].cluster < cluster_end)
+ info[i].mask = (info[i].mask & not_mask) | value;
+}
+
+void
+hb_buffer_t::reverse_range (unsigned int start,
+ unsigned int end)
+{
+ unsigned int i, j;
+
+ if (start == end - 1)
+ return;
+
+ for (i = start, j = end - 1; i < j; i++, j--) {
+ hb_glyph_info_t t;
+
+ t = info[i];
+ info[i] = info[j];
+ info[j] = t;
+ }
+
+ if (pos) {
+ for (i = start, j = end - 1; i < j; i++, j--) {
+ hb_glyph_position_t t;
+
+ t = pos[i];
+ pos[i] = pos[j];
+ pos[j] = t;
+ }
+ }
+}
+
+void
+hb_buffer_t::reverse (void)
+{
+ if (unlikely (!len))
+ return;
+
+ reverse_range (0, len);
+}
+
+void
+hb_buffer_t::reverse_clusters (void)
+{
+ unsigned int i, start, count, last_cluster;
+
+ if (unlikely (!len))
+ return;
+
+ reverse ();
+
+ count = len;
+ start = 0;
+ last_cluster = info[0].cluster;
+ for (i = 1; i < count; i++) {
+ if (last_cluster != info[i].cluster) {
+ reverse_range (start, i);
+ start = i;
+ last_cluster = info[i].cluster;
+ }
+ }
+ reverse_range (start, i);
+}
+
+void
+hb_buffer_t::merge_clusters (unsigned int start,
+ unsigned int end)
+{
+ unsigned int cluster = this->info[start].cluster;
+
+ for (unsigned int i = start + 1; i < end; i++)
+ cluster = MIN (cluster, this->info[i].cluster);
+ for (unsigned int i = start; i < end; i++)
+ this->info[i].cluster = cluster;
+}
+void
+hb_buffer_t::merge_out_clusters (unsigned int start,
+ unsigned int end)
+{
+ unsigned int cluster = this->out_info[start].cluster;
+
+ for (unsigned int i = start + 1; i < end; i++)
+ cluster = MIN (cluster, this->out_info[i].cluster);
+ for (unsigned int i = start; i < end; i++)
+ this->out_info[i].cluster = cluster;
+}
+
+void
+hb_buffer_t::guess_properties (void)
+{
+ /* If script is set to INVALID, guess from buffer contents */
+ if (props.script == HB_SCRIPT_INVALID) {
+ for (unsigned int i = 0; i < len; i++) {
+ hb_script_t script = hb_unicode_script (unicode, info[i].codepoint);
+ if (likely (script != HB_SCRIPT_COMMON &&
+ script != HB_SCRIPT_INHERITED &&
+ script != HB_SCRIPT_UNKNOWN)) {
+ props.script = script;
+ break;
+ }
+ }
+ }
+
+ /* If direction is set to INVALID, guess from script */
+ if (props.direction == HB_DIRECTION_INVALID) {
+ props.direction = hb_script_get_horizontal_direction (props.script);
+ }
+
+ /* If language is not set, use default language from locale */
+ if (props.language == HB_LANGUAGE_INVALID) {
+ /* TODO get_default_for_script? using $LANGUAGE */
+ props.language = hb_language_get_default ();
+ }
+}
+
+
+static inline void
+dump_var_allocation (const hb_buffer_t *buffer)
+{
+ char buf[80];
+ for (unsigned int i = 0; i < 8; i++)
+ buf[i] = '0' + buffer->allocated_var_bytes[7 - i];
+ buf[8] = '\0';
+ DEBUG_MSG (BUFFER, buffer,
+ "Current var allocation: %s",
+ buf);
+}
+
+void hb_buffer_t::allocate_var (unsigned int byte_i, unsigned int count, const char *owner)
+{
+ assert (byte_i < 8 && byte_i + count <= 8);
+
+ if (DEBUG (BUFFER))
+ dump_var_allocation (this);
+ DEBUG_MSG (BUFFER, this,
+ "Allocating var bytes %d..%d for %s",
+ byte_i, byte_i + count - 1, owner);
+
+ for (unsigned int i = byte_i; i < byte_i + count; i++) {
+ assert (!allocated_var_bytes[i]);
+ allocated_var_bytes[i]++;
+ allocated_var_owner[i] = owner;
+ }
+}
+
+void hb_buffer_t::deallocate_var (unsigned int byte_i, unsigned int count, const char *owner)
+{
+ if (DEBUG (BUFFER))
+ dump_var_allocation (this);
+
+ DEBUG_MSG (BUFFER, this,
+ "Deallocating var bytes %d..%d for %s",
+ byte_i, byte_i + count - 1, owner);
+
+ assert (byte_i < 8 && byte_i + count <= 8);
+ for (unsigned int i = byte_i; i < byte_i + count; i++) {
+ assert (allocated_var_bytes[i]);
+ assert (0 == strcmp (allocated_var_owner[i], owner));
+ allocated_var_bytes[i]--;
+ }
+}
+
+void hb_buffer_t::deallocate_var_all (void)
+{
+ memset (allocated_var_bytes, 0, sizeof (allocated_var_bytes));
+ memset (allocated_var_owner, 0, sizeof (allocated_var_owner));
+}
/* Public API */
hb_buffer_t *
-hb_buffer_create (unsigned int pre_alloc_size)
+hb_buffer_create ()
{
hb_buffer_t *buffer;
if (!(buffer = hb_object_create<hb_buffer_t> ()))
- return &_hb_buffer_nil;
+ return hb_buffer_get_empty ();
- hb_buffer_reset (buffer);
-
- if (pre_alloc_size && !_hb_buffer_ensure (buffer, pre_alloc_size)) {
- hb_buffer_destroy (buffer);
- return &_hb_buffer_nil;
- }
+ buffer->reset ();
return buffer;
}
hb_buffer_t *
+hb_buffer_get_empty (void)
+{
+ static const hb_buffer_t _hb_buffer_nil = {
+ HB_OBJECT_HEADER_STATIC,
+
+ _HB_BUFFER_UNICODE_FUNCS_DEFAULT,
+ _HB_BUFFER_PROPS_DEFAULT,
+
+ true, /* in_error */
+ true, /* have_output */
+ true /* have_positions */
+ };
+
+ return const_cast<hb_buffer_t *> (&_hb_buffer_nil);
+}
+
+hb_buffer_t *
hb_buffer_reference (hb_buffer_t *buffer)
{
return hb_object_reference (buffer);
hb_buffer_set_user_data (hb_buffer_t *buffer,
hb_user_data_key_t *key,
void * data,
- hb_destroy_func_t destroy)
+ hb_destroy_func_t destroy,
+ hb_bool_t replace)
{
- return hb_object_set_user_data (buffer, key, data, destroy);
+ return hb_object_set_user_data (buffer, key, data, destroy, replace);
}
void *
return;
if (!unicode)
- unicode = _hb_buffer_nil.unicode;
+ unicode = _HB_BUFFER_UNICODE_FUNCS_DEFAULT;
hb_unicode_funcs_reference (unicode);
hb_unicode_funcs_destroy (buffer->unicode);
void
hb_buffer_reset (hb_buffer_t *buffer)
{
- if (unlikely (hb_object_is_inert (buffer)))
- return;
-
- hb_unicode_funcs_destroy (buffer->unicode);
- buffer->unicode = _hb_buffer_nil.unicode;
-
- buffer->props = _hb_buffer_nil.props;
-
- buffer->in_error = FALSE;
- buffer->have_output = FALSE;
- buffer->have_positions = FALSE;
-
- buffer->i = 0;
- buffer->len = 0;
- buffer->out_len = 0;
-
- buffer->serial = 0;
-
- buffer->out_info = buffer->info;
+ buffer->reset ();
}
hb_bool_t
hb_buffer_pre_allocate (hb_buffer_t *buffer, unsigned int size)
{
- return _hb_buffer_ensure (buffer, size);
+ return buffer->ensure (size);
}
hb_bool_t
hb_mask_t mask,
unsigned int cluster)
{
- hb_glyph_info_t *glyph;
-
- if (unlikely (!_hb_buffer_ensure (buffer, buffer->len + 1))) return;
-
- glyph = &buffer->info[buffer->len];
-
- memset (glyph, 0, sizeof (*glyph));
- glyph->codepoint = codepoint;
- glyph->mask = mask;
- glyph->cluster = cluster;
-
- buffer->len++;
-}
-
-/* HarfBuzz-Internal API */
-
-void
-_hb_buffer_clear_output (hb_buffer_t *buffer)
-{
- if (unlikely (hb_object_is_inert (buffer)))
- return;
-
- buffer->have_output = TRUE;
- buffer->have_positions = FALSE;
-
- buffer->out_len = 0;
- buffer->out_info = buffer->info;
-}
-
-void
-_hb_buffer_clear_positions (hb_buffer_t *buffer)
-{
- if (unlikely (hb_object_is_inert (buffer)))
- return;
-
- buffer->have_output = FALSE;
- buffer->have_positions = TRUE;
-
- memset (buffer->pos, 0, sizeof (buffer->pos[0]) * buffer->len);
-}
-
-void
-_hb_buffer_swap (hb_buffer_t *buffer)
-{
- if (unlikely (buffer->in_error)) return;
-
- assert (buffer->have_output);
-
- if (buffer->out_info != buffer->info)
- {
- hb_glyph_info_t *tmp_string;
- tmp_string = buffer->info;
- buffer->info = buffer->out_info;
- buffer->out_info = tmp_string;
- buffer->pos = (hb_glyph_position_t *) buffer->out_info;
- }
-
- unsigned int tmp;
- tmp = buffer->len;
- buffer->len = buffer->out_len;
- buffer->out_len = tmp;
-
- buffer->i = 0;
-}
-
-void
-_hb_buffer_replace_glyphs_be16 (hb_buffer_t *buffer,
- unsigned int num_in,
- unsigned int num_out,
- const uint16_t *glyph_data_be)
-{
- if (buffer->out_info != buffer->info ||
- buffer->out_len + num_out > buffer->i + num_in)
- {
- if (unlikely (!_hb_buffer_ensure_separate (buffer, buffer->out_len + num_out)))
- return;
- }
-
- hb_glyph_info_t orig_info = buffer->info[buffer->i];
-
- for (unsigned int i = 0; i < num_out; i++)
- {
- hb_glyph_info_t *info = &buffer->out_info[buffer->out_len + i];
- *info = orig_info;
- info->codepoint = hb_be_uint16 (glyph_data_be[i]);
- }
-
- buffer->i += num_in;
- buffer->out_len += num_out;
-}
-
-void
-_hb_buffer_replace_glyph (hb_buffer_t *buffer,
- hb_codepoint_t glyph_index)
-{
- hb_glyph_info_t *info;
-
- if (buffer->out_info != buffer->info)
- {
- if (unlikely (!_hb_buffer_ensure (buffer, buffer->out_len + 1))) return;
- buffer->out_info[buffer->out_len] = buffer->info[buffer->i];
- }
- else if (buffer->out_len != buffer->i)
- buffer->out_info[buffer->out_len] = buffer->info[buffer->i];
-
- info = &buffer->out_info[buffer->out_len];
- info->codepoint = glyph_index;
-
- buffer->i++;
- buffer->out_len++;
-}
-
-void
-_hb_buffer_next_glyph (hb_buffer_t *buffer)
-{
- if (buffer->have_output)
- {
- if (buffer->out_info != buffer->info)
- {
- if (unlikely (!_hb_buffer_ensure (buffer, buffer->out_len + 1))) return;
- buffer->out_info[buffer->out_len] = buffer->info[buffer->i];
- }
- else if (buffer->out_len != buffer->i)
- buffer->out_info[buffer->out_len] = buffer->info[buffer->i];
-
- buffer->out_len++;
- }
-
- buffer->i++;
-}
-
-void
-_hb_buffer_reset_masks (hb_buffer_t *buffer,
- hb_mask_t mask)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- buffer->info[i].mask = mask;
-}
-
-void
-_hb_buffer_add_masks (hb_buffer_t *buffer,
- hb_mask_t mask)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- buffer->info[i].mask |= mask;
+ buffer->add (codepoint, mask, cluster);
}
-void
-_hb_buffer_set_masks (hb_buffer_t *buffer,
- hb_mask_t value,
- hb_mask_t mask,
- unsigned int cluster_start,
- unsigned int cluster_end)
-{
- hb_mask_t not_mask = ~mask;
- value &= mask;
-
- if (!mask)
- return;
-
- if (cluster_start == 0 && cluster_end == (unsigned int)-1) {
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- buffer->info[i].mask = (buffer->info[i].mask & not_mask) | value;
- return;
- }
-
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- if (cluster_start <= buffer->info[i].cluster && buffer->info[i].cluster < cluster_end)
- buffer->info[i].mask = (buffer->info[i].mask & not_mask) | value;
-}
-
-
-/* Public API again */
-
hb_bool_t
hb_buffer_set_length (hb_buffer_t *buffer,
unsigned int length)
{
- if (!_hb_buffer_ensure (buffer, length))
- return FALSE;
+ if (unlikely (hb_object_is_inert (buffer)))
+ return length == 0;
+
+ if (!buffer->ensure (length))
+ return false;
/* Wipe the new space */
if (length > buffer->len) {
}
buffer->len = length;
- return TRUE;
+ return true;
}
unsigned int
unsigned int *length)
{
if (!buffer->have_positions)
- _hb_buffer_clear_positions (buffer);
+ buffer->clear_positions ();
if (length)
*length = buffer->len;
return (hb_glyph_position_t *) buffer->pos;
}
-
-static void
-reverse_range (hb_buffer_t *buffer,
- unsigned int start,
- unsigned int end)
-{
- unsigned int i, j;
-
- for (i = start, j = end - 1; i < j; i++, j--) {
- hb_glyph_info_t t;
-
- t = buffer->info[i];
- buffer->info[i] = buffer->info[j];
- buffer->info[j] = t;
- }
-
- if (buffer->pos) {
- for (i = 0, j = end - 1; i < j; i++, j--) {
- hb_glyph_position_t t;
-
- t = buffer->pos[i];
- buffer->pos[i] = buffer->pos[j];
- buffer->pos[j] = t;
- }
- }
-}
-
void
hb_buffer_reverse (hb_buffer_t *buffer)
{
- if (unlikely (!buffer->len))
- return;
-
- reverse_range (buffer, 0, buffer->len);
+ buffer->reverse ();
}
void
hb_buffer_reverse_clusters (hb_buffer_t *buffer)
{
- unsigned int i, start, count, last_cluster;
-
- if (unlikely (!buffer->len))
- return;
-
- hb_buffer_reverse (buffer);
-
- count = buffer->len;
- start = 0;
- last_cluster = buffer->info[0].cluster;
- for (i = 1; i < count; i++) {
- if (last_cluster != buffer->info[i].cluster) {
- reverse_range (buffer, start, i);
- start = i;
- last_cluster = buffer->info[i].cluster;
- }
- }
- reverse_range (buffer, start, i);
+ buffer->reverse_clusters ();
}
+void
+hb_buffer_guess_properties (hb_buffer_t *buffer)
+{
+ buffer->guess_properties ();
+}
#define ADD_UTF(T) \
HB_STMT_START { \
+ if (text_length == -1) { \
+ text_length = 0; \
+ const T *p = (const T *) text; \
+ while (*p) { \
+ text_length++; \
+ p++; \
+ } \
+ } \
+ if (item_length == -1) \
+ item_length = text_length - item_offset; \
+ buffer->ensure (buffer->len + item_length * sizeof (T) / 4); \
const T *next = (const T *) text + item_offset; \
const T *end = next + item_length; \
while (next < end) { \
void
hb_buffer_add_utf8 (hb_buffer_t *buffer,
const char *text,
- unsigned int text_length HB_UNUSED,
+ int text_length,
unsigned int item_offset,
- unsigned int item_length)
+ int item_length)
{
#define UTF_NEXT(S, E, U) hb_utf8_next (S, E, &(U))
ADD_UTF (uint8_t);
void
hb_buffer_add_utf16 (hb_buffer_t *buffer,
const uint16_t *text,
- unsigned int text_length HB_UNUSED,
+ int text_length,
unsigned int item_offset,
- unsigned int item_length)
+ int item_length)
{
#define UTF_NEXT(S, E, U) hb_utf16_next (S, E, &(U))
ADD_UTF (uint16_t);
void
hb_buffer_add_utf32 (hb_buffer_t *buffer,
const uint32_t *text,
- unsigned int text_length HB_UNUSED,
+ int text_length,
unsigned int item_offset,
- unsigned int item_length)
+ int item_length)
{
#define UTF_NEXT(S, E, U) ((U) = *(S), (S)+1)
ADD_UTF (uint32_t);
}
-HB_END_DECLS
projects / framework / uifw / harfbuzz.git / blobdiff