[buffer] Move buffer serialization code to a new file
This commit is contained in:
Behdad Esfahbod
parent
8da5111269
commit
d3e14aafff
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@ -28,6 +28,7 @@ LOCAL_MODULE_TAGS := optional
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LOCAL_SRC_FILES:= \
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LOCAL_SRC_FILES:= \
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src/hb-blob.cc \
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src/hb-blob.cc \
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src/hb-buffer-serialize.cc \
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src/hb-buffer.cc \
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src/hb-buffer.cc \
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src/hb-common.cc \
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src/hb-common.cc \
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src/hb-fallback-shape.cc \
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src/hb-fallback-shape.cc \
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@ -21,6 +21,7 @@ HBSOURCES = \
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hb-atomic-private.hh \
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hb-atomic-private.hh \
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hb-blob.cc \
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hb-blob.cc \
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hb-buffer-private.hh \
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hb-buffer-private.hh \
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hb-buffer-serialize.cc \
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hb-buffer.cc \
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hb-buffer.cc \
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hb-cache-private.hh \
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hb-cache-private.hh \
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hb-common.cc \
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hb-common.cc \
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@ -0,0 +1,251 @@
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/*
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* Copyright © 2012,2013 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): Behdad Esfahbod
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*/
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#include "hb-buffer-private.hh"
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static const char *serialize_formats[] = {
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"text",
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"json",
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NULL
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};
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const char **
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hb_buffer_serialize_list_formats (void)
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{
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return serialize_formats;
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}
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hb_buffer_serialize_format_t
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hb_buffer_serialize_format_from_string (const char *str, int len)
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{
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/* Upper-case it. */
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return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020);
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}
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const char *
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hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format)
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{
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switch (format)
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{
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case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return serialize_formats[0];
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case HB_BUFFER_SERIALIZE_FORMAT_JSON: return serialize_formats[1];
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default:
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case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return NULL;
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}
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}
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static unsigned int
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_hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer,
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unsigned int start,
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unsigned int end,
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char *buf,
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unsigned int buf_size,
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unsigned int *buf_consumed,
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hb_font_t *font,
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hb_buffer_serialize_flags_t flags)
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{
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hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
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hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL);
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*buf_consumed = 0;
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for (unsigned int i = start; i < end; i++)
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{
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char b[1024];
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char *p = b;
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/* In the following code, we know b is large enough that no overflow can happen. */
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#define APPEND(s) HB_STMT_START { strcpy (p, s); p += strlen (s); } HB_STMT_END
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if (i)
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*p++ = ',';
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*p++ = '{';
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APPEND ("\"g\":");
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES))
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{
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char g[128];
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hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g));
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*p++ = '"';
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for (char *q = g; *q; q++) {
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if (*q == '"')
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*p++ = '\\';
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*p++ = *q;
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}
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*p++ = '"';
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}
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else
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint);
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster);
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}
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
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{
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"dx\":%d,\"dy\":%d",
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pos[i].x_offset, pos[i].y_offset);
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d",
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pos[i].x_advance, pos[i].y_advance);
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}
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*p++ = '}';
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if (buf_size > (p - b))
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{
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unsigned int l = p - b;
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memcpy (buf, b, l);
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buf += l;
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buf_size -= l;
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*buf_consumed += l;
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*buf = '\0';
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} else
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return i - start;
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}
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return end - start;
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}
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static unsigned int
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_hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer,
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unsigned int start,
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unsigned int end,
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char *buf,
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unsigned int buf_size,
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unsigned int *buf_consumed,
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hb_font_t *font,
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hb_buffer_serialize_flags_t flags)
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{
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hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
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hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL);
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hb_direction_t direction = hb_buffer_get_direction (buffer);
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*buf_consumed = 0;
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for (unsigned int i = start; i < end; i++)
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{
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char b[1024];
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char *p = b;
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/* In the following code, we know b is large enough that no overflow can happen. */
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if (i)
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*p++ = '|';
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES))
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{
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hb_font_glyph_to_string (font, info[i].codepoint, p, 128);
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p += strlen (p);
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}
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else
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint);
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster);
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}
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
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{
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if (pos[i].x_offset || pos[i].y_offset)
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", pos[i].x_offset, pos[i].y_offset);
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*p++ = '+';
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if (HB_DIRECTION_IS_HORIZONTAL (direction) || pos[i].x_advance)
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance);
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if (HB_DIRECTION_IS_VERTICAL (direction) || pos->y_advance)
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance);
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}
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if (buf_size > (p - b))
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{
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unsigned int l = p - b;
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memcpy (buf, b, l);
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buf += l;
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buf_size -= l;
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*buf_consumed += l;
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*buf = '\0';
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} else
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return i - start;
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}
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return end - start;
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}
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/* Returns number of items, starting at start, that were serialized. */
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unsigned int
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hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
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unsigned int start,
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unsigned int end,
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char *buf,
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unsigned int buf_size,
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unsigned int *buf_consumed,
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hb_font_t *font, /* May be NULL */
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hb_buffer_serialize_format_t format,
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hb_buffer_serialize_flags_t flags)
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{
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assert (start <= end && end <= buffer->len);
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*buf_consumed = 0;
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assert ((!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID) ||
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buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
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if (unlikely (start == end))
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return 0;
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if (!font)
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font = hb_font_get_empty ();
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switch (format)
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{
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case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
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return _hb_buffer_serialize_glyphs_text (buffer, start, end,
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buf, buf_size, buf_consumed,
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font, flags);
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case HB_BUFFER_SERIALIZE_FORMAT_JSON:
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return _hb_buffer_serialize_glyphs_json (buffer, start, end,
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buf, buf_size, buf_consumed,
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font, flags);
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default:
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case HB_BUFFER_SERIALIZE_FORMAT_INVALID:
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return 0;
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}
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}
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hb_bool_t
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hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
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const char *buf,
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unsigned int buf_len,
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unsigned int *buf_consumed,
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hb_font_t *font, /* May be NULL */
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hb_buffer_serialize_format_t format)
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{
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return false;
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}
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228
src/hb-buffer.cc
228
src/hb-buffer.cc
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@ -1064,231 +1064,3 @@ hb_buffer_normalize_glyphs (hb_buffer_t *buffer)
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}
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}
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normalize_glyphs_cluster (buffer, start, end, backward);
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normalize_glyphs_cluster (buffer, start, end, backward);
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}
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}
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/*
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* Serialize
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*/
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static const char *serialize_formats[] = {
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"text",
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"json",
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NULL
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};
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const char **
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hb_buffer_serialize_list_formats (void)
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{
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return serialize_formats;
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}
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hb_buffer_serialize_format_t
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hb_buffer_serialize_format_from_string (const char *str, int len)
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{
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/* Upper-case it. */
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return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020);
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}
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const char *
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hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format)
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{
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switch (format)
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{
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case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return serialize_formats[0];
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case HB_BUFFER_SERIALIZE_FORMAT_JSON: return serialize_formats[1];
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default:
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case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return NULL;
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}
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}
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static unsigned int
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_hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer,
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unsigned int start,
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unsigned int end,
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char *buf,
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unsigned int buf_size,
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unsigned int *buf_consumed,
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hb_font_t *font,
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hb_buffer_serialize_flags_t flags)
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{
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hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
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hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL);
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*buf_consumed = 0;
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for (unsigned int i = start; i < end; i++)
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{
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char b[1024];
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char *p = b;
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/* In the following code, we know b is large enough that no overflow can happen. */
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#define APPEND(s) HB_STMT_START { strcpy (p, s); p += strlen (s); } HB_STMT_END
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if (i)
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*p++ = ',';
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*p++ = '{';
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APPEND ("\"g\":");
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES))
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{
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char g[128];
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hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g));
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*p++ = '"';
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for (char *q = g; *q; q++) {
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if (*q == '"')
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*p++ = '\\';
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*p++ = *q;
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}
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*p++ = '"';
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}
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else
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint);
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster);
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}
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if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
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{
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"dx\":%d,\"dy\":%d",
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pos[i].x_offset, pos[i].y_offset);
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p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d",
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pos[i].x_advance, pos[i].y_advance);
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}
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*p++ = '}';
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if (buf_size > (p - b))
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{
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unsigned int l = p - b;
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memcpy (buf, b, l);
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buf += l;
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buf_size -= l;
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*buf_consumed += l;
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*buf = '\0';
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} else
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return i - start;
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}
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return end - start;
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||||||
}
|
|
||||||
|
|
||||||
static unsigned int
|
|
||||||
_hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer,
|
|
||||||
unsigned int start,
|
|
||||||
unsigned int end,
|
|
||||||
char *buf,
|
|
||||||
unsigned int buf_size,
|
|
||||||
unsigned int *buf_consumed,
|
|
||||||
hb_font_t *font,
|
|
||||||
hb_buffer_serialize_flags_t flags)
|
|
||||||
{
|
|
||||||
hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
|
|
||||||
hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL);
|
|
||||||
hb_direction_t direction = hb_buffer_get_direction (buffer);
|
|
||||||
|
|
||||||
*buf_consumed = 0;
|
|
||||||
for (unsigned int i = start; i < end; i++)
|
|
||||||
{
|
|
||||||
char b[1024];
|
|
||||||
char *p = b;
|
|
||||||
|
|
||||||
/* In the following code, we know b is large enough that no overflow can happen. */
|
|
||||||
|
|
||||||
if (i)
|
|
||||||
*p++ = '|';
|
|
||||||
|
|
||||||
if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES))
|
|
||||||
{
|
|
||||||
hb_font_glyph_to_string (font, info[i].codepoint, p, 128);
|
|
||||||
p += strlen (p);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint);
|
|
||||||
|
|
||||||
if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
|
|
||||||
p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
|
|
||||||
{
|
|
||||||
if (pos[i].x_offset || pos[i].y_offset)
|
|
||||||
p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", pos[i].x_offset, pos[i].y_offset);
|
|
||||||
|
|
||||||
*p++ = '+';
|
|
||||||
if (HB_DIRECTION_IS_HORIZONTAL (direction) || pos[i].x_advance)
|
|
||||||
p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance);
|
|
||||||
if (HB_DIRECTION_IS_VERTICAL (direction) || pos->y_advance)
|
|
||||||
p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (buf_size > (p - b))
|
|
||||||
{
|
|
||||||
unsigned int l = p - b;
|
|
||||||
memcpy (buf, b, l);
|
|
||||||
buf += l;
|
|
||||||
buf_size -= l;
|
|
||||||
*buf_consumed += l;
|
|
||||||
*buf = '\0';
|
|
||||||
} else
|
|
||||||
return i - start;
|
|
||||||
}
|
|
||||||
|
|
||||||
return end - start;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Returns number of items, starting at start, that were serialized. */
|
|
||||||
unsigned int
|
|
||||||
hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
|
|
||||||
unsigned int start,
|
|
||||||
unsigned int end,
|
|
||||||
char *buf,
|
|
||||||
unsigned int buf_size,
|
|
||||||
unsigned int *buf_consumed,
|
|
||||||
hb_font_t *font, /* May be NULL */
|
|
||||||
hb_buffer_serialize_format_t format,
|
|
||||||
hb_buffer_serialize_flags_t flags)
|
|
||||||
{
|
|
||||||
assert (start <= end && end <= buffer->len);
|
|
||||||
|
|
||||||
*buf_consumed = 0;
|
|
||||||
|
|
||||||
assert ((!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID) ||
|
|
||||||
buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
|
|
||||||
|
|
||||||
if (unlikely (start == end))
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
if (!font)
|
|
||||||
font = hb_font_get_empty ();
|
|
||||||
|
|
||||||
switch (format)
|
|
||||||
{
|
|
||||||
case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
|
|
||||||
return _hb_buffer_serialize_glyphs_text (buffer, start, end,
|
|
||||||
buf, buf_size, buf_consumed,
|
|
||||||
font, flags);
|
|
||||||
|
|
||||||
case HB_BUFFER_SERIALIZE_FORMAT_JSON:
|
|
||||||
return _hb_buffer_serialize_glyphs_json (buffer, start, end,
|
|
||||||
buf, buf_size, buf_consumed,
|
|
||||||
font, flags);
|
|
||||||
|
|
||||||
default:
|
|
||||||
case HB_BUFFER_SERIALIZE_FORMAT_INVALID:
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
hb_bool_t
|
|
||||||
hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
|
|
||||||
const char *buf,
|
|
||||||
unsigned int buf_len,
|
|
||||||
unsigned int *buf_consumed,
|
|
||||||
hb_font_t *font, /* May be NULL */
|
|
||||||
hb_buffer_serialize_format_t format)
|
|
||||||
{
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue