--- /dev/null 2015-10-15 09:34:20.419034837 -0700 +++ new/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-buffer-serialize.cc 2015-11-20 14:29:44.033287342 -0800 @@ -0,0 +1,418 @@ +/* + * Copyright © 2012,2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb-buffer-private.hh" + + +static const char *serialize_formats[] = { + "text", + "json", + NULL +}; + +/** + * hb_buffer_serialize_list_formats: + * + * + * + * Return value: (transfer none): + * + * Since: 0.9.2 + **/ +const char ** +hb_buffer_serialize_list_formats (void) +{ + return serialize_formats; +} + +/** + * hb_buffer_serialize_format_from_string: + * @str: + * @len: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_buffer_serialize_format_t +hb_buffer_serialize_format_from_string (const char *str, int len) +{ + /* Upper-case it. */ + return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020u); +} + +/** + * hb_buffer_serialize_format_to_string: + * @format: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +const char * +hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format) +{ + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return serialize_formats[0]; + case HB_BUFFER_SERIALIZE_FORMAT_JSON: return serialize_formats[1]; + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return NULL; + } +} + +static unsigned int +_hb_buffer_serialize_glyphs_json (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 = (flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS) ? + NULL : hb_buffer_get_glyph_positions (buffer, NULL); + + *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. */ + +#define APPEND(s) HB_STMT_START { strcpy (p, s); p += strlen (s); } HB_STMT_END + + if (i) + *p++ = ','; + + *p++ = '{'; + + APPEND ("\"g\":"); + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES)) + { + char g[128]; + hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g)); + *p++ = '"'; + for (char *q = g; *q; q++) { + if (*q == '"') + *p++ = '\\'; + *p++ = *q; + } + *p++ = '"'; + } + else + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster)); + } + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS)) + { + p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"dx\":%d,\"dy\":%d", + pos[i].x_offset, pos[i].y_offset); + p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d", + pos[i].x_advance, pos[i].y_advance); + } + + if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS) + { + hb_glyph_extents_t extents; + hb_font_get_glyph_extents(font, info[i].codepoint, &extents); + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"xb\":%d,\"yb\":%d", + extents.x_bearing, extents.y_bearing)); + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"w\":%d,\"h\":%d", + extents.width, extents.height)); + } + + *p++ = '}'; + + unsigned int l = p - b; + if (buf_size > l) + { + memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + } + + return end - start; +} + +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 = (flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS) ? + NULL : hb_buffer_get_glyph_positions (buffer, NULL); + + *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 += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += MAX (0, 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 += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", pos[i].x_offset, pos[i].y_offset)); + + *p++ = '+'; + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance)); + if (pos[i].y_advance) + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance)); + } + + if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS) + { + hb_glyph_extents_t extents; + hb_font_get_glyph_extents(font, info[i].codepoint, &extents); + p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "<%d,%d,%d,%d>", extents.x_bearing, extents.y_bearing, extents.width, extents.height)); + } + + unsigned int l = p - b; + if (buf_size > l) + { + 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. */ +/** + * hb_buffer_serialize_glyphs: + * @buffer: a buffer. + * @start: + * @end: + * @buf: (array length=buf_size): + * @buf_size: + * @buf_consumed: (out): + * @font: + * @format: + * @flags: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +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, /* May be NULL */ + 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); + + unsigned int sconsumed; + if (!buf_consumed) + buf_consumed = &sconsumed; + *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; + + } +} + + +static hb_bool_t +parse_uint (const char *pp, const char *end, uint32_t *pv) +{ + char buf[32]; + unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - pp)); + strncpy (buf, pp, len); + buf[len] = '\0'; + + char *p = buf; + char *pend = p; + uint32_t v; + + errno = 0; + v = strtol (p, &pend, 10); + if (errno || p == pend || pend - p != end - pp) + return false; + + *pv = v; + return true; +} + +static hb_bool_t +parse_int (const char *pp, const char *end, int32_t *pv) +{ + char buf[32]; + unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - pp)); + strncpy (buf, pp, len); + buf[len] = '\0'; + + char *p = buf; + char *pend = p; + int32_t v; + + errno = 0; + v = strtol (p, &pend, 10); + if (errno || p == pend || pend - p != end - pp) + return false; + + *pv = v; + return true; +} + +#include "hb-buffer-deserialize-json.hh" +#include "hb-buffer-deserialize-text.hh" + +/** + * hb_buffer_deserialize_glyphs: + * @buffer: a buffer. + * @buf: (array length=buf_len): + * @buf_len: + * @end_ptr: (out): + * @font: + * @format: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, + const char *buf, + int buf_len, /* -1 means nul-terminated */ + const char **end_ptr, /* May be NULL */ + hb_font_t *font, /* May be NULL */ + hb_buffer_serialize_format_t format) +{ + const char *end; + if (!end_ptr) + end_ptr = &end; + *end_ptr = buf; + + assert ((!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID) || + buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS); + + if (buf_len == -1) + buf_len = strlen (buf); + + if (!buf_len) + { + *end_ptr = buf; + return false; + } + + hb_buffer_set_content_type (buffer, HB_BUFFER_CONTENT_TYPE_GLYPHS); + + if (!font) + font = hb_font_get_empty (); + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_deserialize_glyphs_text (buffer, + buf, buf_len, end_ptr, + font); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_deserialize_glyphs_json (buffer, + buf, buf_len, end_ptr, + font); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return false; + + } +}