#ifndef HB_SHAPE_CONSUMER_HH
#define HB_SHAPE_CONSUMER_HH
-#include "hb.hh"
-#include "options.hh"
+#include "font-options.hh"
+#include "shape-options.hh"
+#include "text-options.hh"
template <typename output_t>
-struct shape_consumer_t
+struct shape_consumer_t : shape_options_t
{
- shape_consumer_t (option_parser_t *parser)
- : failed (false),
- shaper (parser),
- output (parser),
- font (nullptr),
- buffer (nullptr) {}
+ void add_options (option_parser_t *parser)
+ {
+ shape_options_t::add_options (parser);
+ output.add_options (parser);
+ }
- void init (hb_buffer_t *buffer_,
- const font_options_t *font_opts)
+ template <typename app_t>
+ void init (const app_t *app)
{
- font = hb_font_reference (font_opts->get_font ());
failed = false;
- buffer = hb_buffer_reference (buffer_);
+ buffer = hb_buffer_create ();
- output.init (buffer, font_opts);
+ output.init (buffer, app);
}
- void consume_line (const char *text,
- unsigned int text_len,
- const char *text_before,
- const char *text_after)
+ template <typename app_t>
+ bool consume_line (app_t &app)
{
+ unsigned int text_len;
+ const char *text;
+ if (!(text = app.get_line (&text_len)))
+ return false;
+
output.new_line ();
- for (unsigned int n = shaper.num_iterations; n; n--)
+ for (unsigned int n = num_iterations; n; n--)
{
- const char *error = nullptr;
-
- shaper.populate_buffer (buffer, text, text_len, text_before, text_after);
+ populate_buffer (buffer, text, text_len, app.text_before, app.text_after, app.font);
if (n == 1)
- output.consume_text (buffer, text, text_len, shaper.utf8_clusters);
- if (!shaper.shape (font, buffer, &error))
+ output.consume_text (buffer, text, text_len, utf8_clusters);
+
+ const char *error = nullptr;
+ if (!shape (app.font, buffer, &error))
{
failed = true;
output.error (error);
if (hb_buffer_get_content_type (buffer) == HB_BUFFER_CONTENT_TYPE_GLYPHS)
break;
else
- return;
+ return true;
}
}
- output.consume_glyphs (buffer, text, text_len, shaper.utf8_clusters);
+ if (glyphs)
+ output.consume_glyphs (buffer, nullptr, 0, false);
+ else
+ output.consume_glyphs (buffer, text, text_len, utf8_clusters);
+ return true;
}
- void finish (const font_options_t *font_opts)
+ template <typename app_t>
+ void finish (const app_t *app)
{
- output.finish (buffer, font_opts);
- hb_font_destroy (font);
- font = nullptr;
+ output.finish (buffer, app);
hb_buffer_destroy (buffer);
buffer = nullptr;
}
public:
- bool failed;
+ bool failed = false;
protected:
- shape_options_t shaper;
output_t output;
- hb_font_t *font;
- hb_buffer_t *buffer;
+ hb_buffer_t *buffer = nullptr;
};