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-rw-r--r--gfx/harfbuzz/src/hb-buffer-deserialize-json.rl276
1 files changed, 144 insertions, 132 deletions
diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl b/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl
index 91b350f5ac..600093f810 100644
--- a/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl
+++ b/gfx/harfbuzz/src/hb-buffer-deserialize-json.rl
@@ -1,132 +1,144 @@
-/*
- * Copyright © 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
- */
-
-#ifndef HB_BUFFER_DESERIALIZE_JSON_HH
-#define HB_BUFFER_DESERIALIZE_JSON_HH
-
-#include "hb-private.hh"
-
-%%{
-
-machine deserialize_json;
-alphtype unsigned char;
-write data;
-
-action clear_item {
- memset (&info, 0, sizeof (info));
- memset (&pos , 0, sizeof (pos ));
-}
-
-action add_item {
- buffer->add_info (info);
- if (buffer->in_error)
- return false;
- buffer->pos[buffer->len - 1] = pos;
- *end_ptr = p;
-}
-
-action tok {
- tok = p;
-}
-
-action parse_glyph {
- if (!hb_font_glyph_from_string (font,
- tok, p - tok,
- &info.codepoint))
- return false;
-}
-
-action parse_gid { if (!parse_uint (tok, p, &info.codepoint)) return false; }
-action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; }
-action parse_x_offset { if (!parse_int (tok, p, &pos.x_offset )) return false; }
-action parse_y_offset { if (!parse_int (tok, p, &pos.y_offset )) return false; }
-action parse_x_advance { if (!parse_int (tok, p, &pos.x_advance)) return false; }
-action parse_y_advance { if (!parse_int (tok, p, &pos.y_advance)) return false; }
-
-unum = '0' | [1-9] digit*;
-num = '-'? unum;
-
-comma = space* ',' space*;
-colon = space* ':' space*;
-
-glyph_id = unum;
-glyph_name = alpha (alnum|'_'|'.'|'-')*;
-
-glyph_string = '"' (glyph_name >tok %parse_glyph) '"';
-glyph_number = (glyph_id >tok %parse_gid);
-
-glyph = "\"g\"" colon (glyph_string | glyph_number);
-cluster = "\"cl\"" colon (unum >tok %parse_cluster);
-xoffset = "\"dx\"" colon (num >tok %parse_x_offset);
-yoffset = "\"dy\"" colon (num >tok %parse_y_offset);
-xadvance= "\"ax\"" colon (num >tok %parse_x_advance);
-yadvance= "\"ay\"" colon (num >tok %parse_y_advance);
-
-element = glyph | cluster | xoffset | yoffset | xadvance | yadvance;
-item =
- ( '{' space* element (comma element)* space* '}')
- >clear_item
- @add_item
- ;
-
-main := space* item (comma item)* space* (','|']')?;
-
-}%%
-
-static hb_bool_t
-_hb_buffer_deserialize_glyphs_json (hb_buffer_t *buffer,
- const char *buf,
- unsigned int buf_len,
- const char **end_ptr,
- hb_font_t *font)
-{
- const char *p = buf, *pe = buf + buf_len;
-
- /* Ensure we have positions. */
- (void) hb_buffer_get_glyph_positions (buffer, NULL);
-
- while (p < pe && ISSPACE (*p))
- p++;
- if (p < pe && *p == (buffer->len ? ',' : '['))
- {
- *end_ptr = ++p;
- }
-
- const char *tok = NULL;
- int cs;
- hb_glyph_info_t info = {0};
- hb_glyph_position_t pos = {0};
- %%{
- write init;
- write exec;
- }%%
-
- *end_ptr = p;
-
- return p == pe && *(p-1) != ']';
-}
-
-#endif /* HB_BUFFER_DESERIALIZE_JSON_HH */
+/*
+ * Copyright © 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
+ */
+
+#ifndef HB_BUFFER_DESERIALIZE_JSON_HH
+#define HB_BUFFER_DESERIALIZE_JSON_HH
+
+#include "hb.hh"
+
+%%{
+
+machine deserialize_json;
+alphtype unsigned char;
+write data;
+
+action clear_item {
+ hb_memset (&info, 0, sizeof (info));
+ hb_memset (&pos , 0, sizeof (pos ));
+}
+
+action add_item {
+ buffer->add_info (info);
+ if (unlikely (!buffer->successful))
+ return false;
+ buffer->pos[buffer->len - 1] = pos;
+ *end_ptr = p;
+}
+
+action tok {
+ tok = p;
+}
+
+action ensure_glyphs { if (unlikely (!buffer->ensure_glyphs ())) return false; }
+action ensure_unicode { if (unlikely (!buffer->ensure_unicode ())) return false; }
+
+action parse_glyph_name {
+ /* TODO Unescape \" and \\ if found. */
+ if (!hb_font_glyph_from_string (font,
+ tok+1, p - tok - 2, /* Skip "" */
+ &info.codepoint))
+ return false;
+}
+
+action parse_codepoint { if (!parse_uint (tok, p, &info.codepoint)) return false; }
+action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; }
+action parse_x_offset { if (!parse_int (tok, p, &pos.x_offset )) return false; }
+action parse_y_offset { if (!parse_int (tok, p, &pos.y_offset )) return false; }
+action parse_x_advance { if (!parse_int (tok, p, &pos.x_advance)) return false; }
+action parse_y_advance { if (!parse_int (tok, p, &pos.y_advance)) return false; }
+action parse_glyph_flags{ if (!parse_uint (tok, p, &info.mask )) return false; }
+
+unum = '0' | [1-9] digit*;
+num = '-'? unum;
+
+comma = space* ',' space*;
+colon = space* ':' space*;
+
+codepoint = unum;
+glyph_name = '"' ([^\\"] | '\\' [\\"])* '"';
+
+parse_glyph_name = (glyph_name >tok %parse_glyph_name);
+parse_codepoint = (codepoint >tok %parse_codepoint);
+
+glyph = "\"g\"" colon (parse_glyph_name | parse_codepoint);
+unicode = "\"u\"" colon parse_codepoint;
+cluster = "\"cl\"" colon (unum >tok %parse_cluster);
+xoffset = "\"dx\"" colon (num >tok %parse_x_offset);
+yoffset = "\"dy\"" colon (num >tok %parse_y_offset);
+xadvance= "\"ax\"" colon (num >tok %parse_x_advance);
+yadvance= "\"ay\"" colon (num >tok %parse_y_advance);
+glyphflags="\"fl\"" colon (unum >tok %parse_glyph_flags);
+
+element = glyph @ensure_glyphs
+ | unicode @ensure_unicode
+ | cluster
+ | xoffset
+ | yoffset
+ | xadvance
+ | yadvance
+ | glyphflags;
+item =
+ ( '{' space* element (comma element)* space* '}')
+ >clear_item
+ @add_item
+ ;
+
+main := space* item (comma item)* space* (','|']');
+
+}%%
+
+static hb_bool_t
+_hb_buffer_deserialize_json (hb_buffer_t *buffer,
+ const char *buf,
+ unsigned int buf_len,
+ const char **end_ptr,
+ hb_font_t *font)
+{
+ const char *p = buf, *pe = buf + buf_len;
+
+ /* Ensure we have positions. */
+ (void) hb_buffer_get_glyph_positions (buffer, nullptr);
+
+ while (p < pe && ISSPACE (*p))
+ p++;
+ if (p < pe && *p == (buffer->len ? ',' : '['))
+ *end_ptr = ++p;
+
+ const char *tok = nullptr;
+ int cs;
+ hb_glyph_info_t info = {0};
+ hb_glyph_position_t pos = {0};
+ %%{
+ write init;
+ write exec;
+ }%%
+
+ *end_ptr = p;
+
+ return p == pe && *(p-1) != ']';
+}
+
+#endif /* HB_BUFFER_DESERIALIZE_JSON_HH */
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