[util] Add hb-ot-shape-closure tool
Computes all the glyphs that may be generated given a font and
set of Unicode characters.
The order of the Unicode characters is irrelevant.
Sample output:
behdad:util 0$ ./hb-ot-shape-closure Doulos\ SIL\ Regular.ttf f
f f_f
behdad:util 0$ ./hb-ot-shape-closure Doulos\ SIL\ Regular.ttf i
i
behdad:util 0$ ./hb-ot-shape-closure Doulos\ SIL\ Regular.ttf fi
f f_i f_f_i f_f i
behdad:util 0$ ./hb-ot-shape-closure DroidNaskh-Regular.ttf ب
uni0628 uni0628.init uni0628.medi uni0628.fina
behdad:util 0$ ./hb-ot-shape-closure DroidNaskh-Regular.ttf ا
uni0627 uni0627.fina
behdad:util 0$ ./hb-ot-shape-closure DroidNaskh-Regular.ttf با
uni0627 uni0627.fina uni0628 uni0628.init uni0628.medi uni0628.fina
behdad:util 0$ ./hb-ot-shape-closure DroidNaskh-Regular.ttf با --no-glyph-names
5 6 133 134 135 136
diff --git a/util/hb-ot-shape-closure.cc b/util/hb-ot-shape-closure.cc
new file mode 100644
index 0000000..afd88ae
--- /dev/null
+++ b/util/hb-ot-shape-closure.cc
@@ -0,0 +1,112 @@
+/*
+ * Copyright © 2012 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 "main-font-text.hh"
+
+#ifdef HAVE_FREETYPE
+#include <hb-ft.h>
+#endif
+
+struct shape_closure_consumer_t : option_group_t
+{
+ shape_closure_consumer_t (option_parser_t *parser) :
+ shaper (parser),
+ show_glyph_names (true)
+ {
+ add_options (parser);
+ }
+
+ void add_options (struct option_parser_t *parser)
+ {
+ GOptionEntry entries[] =
+ {
+ {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Use glyph indices instead of names", NULL},
+ {NULL}
+ };
+ parser->add_group (entries,
+ "format",
+ "Format options:",
+ "Options controlling output formatting",
+ this);
+ }
+
+ void init (const font_options_t *font_opts)
+ {
+ glyphs = hb_set_create ();
+ font = hb_font_reference (font_opts->get_font ());
+ }
+ void consume_line (hb_buffer_t *buffer,
+ const char *text,
+ unsigned int text_len)
+ {
+ FT_Face ft_face = show_glyph_names ? hb_ft_font_get_face (font) : NULL;
+
+ hb_set_clear (glyphs);
+ shaper.shape_closure (text, text_len, font, buffer, glyphs);
+ /* Print it out! */
+ hb_codepoint_t start = hb_set_min (glyphs);
+ hb_codepoint_t end = 1 + hb_set_max (glyphs);
+ bool first = true;
+ for (hb_codepoint_t i = start; i < end; i++)
+ if (hb_set_has (glyphs, i)) {
+ if (first)
+ first = false;
+ else
+ printf (" ");
+ /* TODO refactor this */
+ char glyph_name[30];
+ if (show_glyph_names) {
+ if (!FT_Get_Glyph_Name (ft_face, i, glyph_name, sizeof (glyph_name)))
+ printf ("%s", glyph_name);
+ else
+ printf ("gid%u", i);
+ } else
+ printf ("%u", i);
+ }
+ }
+ void finish (const font_options_t *font_opts)
+ {
+ printf ("\n");
+ hb_font_destroy (font);
+ font = NULL;
+ hb_set_destroy (glyphs);
+ glyphs = NULL;
+ }
+
+ protected:
+ shape_options_t shaper;
+ hb_bool_t show_glyph_names;
+
+ hb_set_t *glyphs;
+ hb_font_t *font;
+};
+
+int
+main (int argc, char **argv)
+{
+ main_font_text_t<shape_closure_consumer_t> driver;
+ return driver.main (argc, argv);
+}
