From 407f80d62589774f845ef1a6a0a7d841b09d57c6 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 13 Nov 2012 15:33:27 -0800
Subject: [PATCH] [util] Add --bot / --eot / --preserve-default-ignorables

---
 util/options.cc |  3 +++
 util/options.hh | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/util/options.cc b/util/options.cc
index b9f1538fb..ca621bff8 100644
--- a/util/options.cc
+++ b/util/options.cc
@@ -271,6 +271,9 @@ shape_options_t::add_options (option_parser_t *parser)
     {"direction",	0, 0, G_OPTION_ARG_STRING,	&this->direction,		"Set text direction (default: auto)",	"ltr/rtl/ttb/btt"},
     {"language",	0, 0, G_OPTION_ARG_STRING,	&this->language,		"Set text language (default: $LANG)",	"langstr"},
     {"script",		0, 0, G_OPTION_ARG_STRING,	&this->script,			"Set text script (default: auto)",	"ISO-15924 tag"},
+    {"bot",		0, 0, G_OPTION_ARG_NONE,	&this->bot,			"Treat text as beginning-of-paragraph",	NULL},
+    {"eot",		0, 0, G_OPTION_ARG_NONE,	&this->eot,			"Treat text as end-of-paragraph",	NULL},
+    {"preserve-default-ignorables",0, 0, G_OPTION_ARG_NONE,	&this->preserve_default_ignorables,	"Preserve Default-Ignorable characters",	NULL},
     {"utf8-clusters",	0, 0, G_OPTION_ARG_NONE,	&this->utf8_clusters,		"Use UTF8 byte indices, not char indices",	NULL},
     {"normalize-glyphs",0, 0, G_OPTION_ARG_NONE,	&this->normalize_glyphs,	"Rearrange glyph clusters in nominal order",	NULL},
     {NULL}
diff --git a/util/options.hh b/util/options.hh
index 0f6fce287..be6878b43 100644
--- a/util/options.hh
+++ b/util/options.hh
@@ -144,6 +144,7 @@ struct shape_options_t : option_group_t
   shape_options_t (option_parser_t *parser)
   {
     direction = language = script = NULL;
+    bot = eot = preserve_default_ignorables = false;
     features = NULL;
     num_features = 0;
     shapers = NULL;
@@ -165,6 +166,10 @@ struct shape_options_t : option_group_t
     hb_buffer_set_direction (buffer, hb_direction_from_string (direction, -1));
     hb_buffer_set_script (buffer, hb_script_from_string (script, -1));
     hb_buffer_set_language (buffer, hb_language_from_string (language, -1));
+    hb_buffer_set_flags (buffer, (hb_buffer_flags_t) (HB_BUFFER_FLAGS_DEFAULT |
+			 (bot ? HB_BUFFER_FLAG_BOT : 0) |
+			 (eot ? HB_BUFFER_FLAG_EOT : 0) |
+			 (preserve_default_ignorables ? HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES : 0)));
   }
 
   void populate_buffer (hb_buffer_t *buffer, const char *text, int text_len,
@@ -213,9 +218,16 @@ struct shape_options_t : option_group_t
     hb_ot_shape_glyphs_closure (font, buffer, features, num_features, glyphs);
   }
 
+  /* Buffer properties */
   const char *direction;
   const char *language;
   const char *script;
+
+  /* Buffer flags */
+  hb_bool_t bot;
+  hb_bool_t eot;
+  hb_bool_t preserve_default_ignorables;
+
   hb_feature_t *features;
   unsigned int num_features;
   char **shapers;