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harfbuzz/util/hb-info.cc

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/*
* Copyright © 2010 Behdad Esfahbod
* Copyright © 2011,2012 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 "batch.hh"
#include "font-options.hh"
const unsigned DEFAULT_FONT_SIZE = FONT_SIZE_UPEM;
const unsigned SUBPIXEL_BITS = 0;
struct info_t
{
void add_options (option_parser_t *parser)
{
GOptionEntry misc_entries[] =
{
{"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction_str, "Set direction (default: ltr)", "ltr/rtl/ttb/btt"},
{"language", 0, 0, G_OPTION_ARG_STRING, &this->language_str, "Set language (default: $LANG)", "BCP 47 tag"},
{"script", 0, 0, G_OPTION_ARG_STRING, &this->script_str, "Set script (default: none)", "ISO-15924 tag"},
{nullptr}
};
parser->add_group (misc_entries,
"misc",
"Miscellaneaous options:",
"Miscellaneaous options affecting queries",
this,
false /* We add below. */);
GOptionEntry query_entries[] =
{
{"all", 'a', 0, G_OPTION_ARG_NONE, &this->all, "Show everything", nullptr},
{"show-all", 0, 0, G_OPTION_ARG_NONE, &this->show_all, "Show all short information (default)", nullptr},
{"show-family", 0, 0, G_OPTION_ARG_NONE, &this->show_family, "Show family name", nullptr},
{"show-style", 0, 0, G_OPTION_ARG_NONE, &this->show_style, "Show style name", nullptr},
{"show-unique-name",0, 0, G_OPTION_ARG_NONE, &this->show_unique_name, "Show unique name", nullptr},
{"show-full-name",0, 0, G_OPTION_ARG_NONE, &this->show_full_name, "Show full name", nullptr},
{"show-postscript-name",0, 0, G_OPTION_ARG_NONE, &this->show_postscript_name, "Show Postscript name", nullptr},
{"show-version", 0, 0, G_OPTION_ARG_NONE, &this->show_version, "Show version", nullptr},
{"show-upem", 0, 0, G_OPTION_ARG_NONE, &this->show_upem, "Show Units-Per-EM", nullptr},
{"show-unicode-count",0, 0, G_OPTION_ARG_NONE, &this->show_unicode_count, "Show Unicode count", nullptr},
{"show-glyph-count",0, 0, G_OPTION_ARG_NONE, &this->show_glyph_count, "Show glyph count", nullptr},
{"show-extents", 0, 0, G_OPTION_ARG_NONE, &this->show_extents, "Show extents", nullptr},
{"list-all", 0, 0, G_OPTION_ARG_NONE, &this->list_all, "List all long information", nullptr},
{"list-names", 0, 0, G_OPTION_ARG_NONE, &this->list_names, "List names", nullptr},
{"list-tables", 'l', 0, G_OPTION_ARG_NONE, &this->list_tables, "List tables", nullptr},
{"list-unicodes", 0, 0, G_OPTION_ARG_NONE, &this->list_unicodes, "List characters", nullptr},
{"list-glyphs", 0, 0, G_OPTION_ARG_NONE, &this->list_glyphs, "List glyphs", nullptr},
{"list-scripts", 0, 0, G_OPTION_ARG_NONE, &this->list_scripts, "List layout scripts", nullptr},
{"list-features", 0, 0, G_OPTION_ARG_NONE, &this->list_features, "List layout features", nullptr},
#ifndef HB_NO_VAR
{"list-variations",0, 0, G_OPTION_ARG_NONE, &this->list_variations, "List variations", nullptr},
#endif
{"dump-table", 0, 0, G_OPTION_ARG_STRING, &this->dump_table, "Dump font table", "TABLE-TAG"},
{nullptr}
};
parser->add_group (query_entries,
"query",
"Query options:",
"Options to query the font instance",
this,
false /* We add below. */);
}
protected:
hb_face_t *face = nullptr;
hb_font_t *font = nullptr;
hb_bool_t verbose = true;
hb_bool_t first_item = true;
char *direction_str = nullptr;
char *script_str = nullptr;
char *language_str = nullptr;
hb_bool_t all = false;
hb_bool_t show_all = false;
hb_bool_t show_family = false;
hb_bool_t show_style = false;
hb_bool_t show_unique_name = false;
hb_bool_t show_full_name = false;
hb_bool_t show_postscript_name = false;
hb_bool_t show_version = false;
hb_bool_t show_upem = false;
hb_bool_t show_unicode_count = false;
hb_bool_t show_glyph_count = false;
hb_bool_t show_extents = false;
hb_bool_t list_all = false;
hb_bool_t list_names = false;
hb_bool_t list_tables = false;
hb_bool_t list_unicodes = false;
hb_bool_t list_glyphs = false;
hb_bool_t list_scripts = false;
hb_bool_t list_features = false;
#ifndef HB_NO_VAR
hb_bool_t list_variations = false;
#endif
char *dump_table = nullptr;
public:
template <typename app_t>
void operator () (app_t *app)
{
face = hb_face_reference (((font_options_t *) app)->face);
font = hb_font_reference (((font_options_t *) app)->font);
verbose = !app->quiet;
if (all)
{
show_all =
list_all =
true;
}
if (show_all)
{
show_family =
show_style =
show_unique_name =
show_full_name =
show_postscript_name =
show_version =
show_upem =
show_unicode_count =
show_glyph_count =
show_extents =
true;
first_item = false;
}
if (list_all)
{
list_names =
list_tables =
list_unicodes =
list_glyphs =
list_scripts =
list_features =
#ifndef HB_NO_VAR
list_variations =
#endif
true;
}
if (show_family) _show_family ();
if (show_style) _show_style ();
if (show_unique_name) _show_unique_name ();
if (show_full_name) _show_full_name ();
if (show_postscript_name)_show_postscript_name ();
if (show_version) _show_version ();
if (show_upem) _show_upem ();
if (show_unicode_count)_show_unicode_count ();
if (show_glyph_count) _show_glyph_count ();
if (show_extents) _show_extents ();
if (list_names) _list_names ();
if (list_tables) _list_tables ();
if (list_unicodes) _list_unicodes ();
if (list_glyphs) _list_glyphs ();
if (list_scripts) _list_scripts ();
if (list_features) _list_features ();
#ifndef HB_NO_VAR
if (list_variations) _list_variations ();
#endif
if (dump_table) _dump_table ();
hb_font_destroy (font);
hb_face_destroy (face);
}
protected:
void separator ()
{
if (first_item)
{
first_item = false;
return;
}
printf ("\n===\n\n");
}
void _show_name (const char *label, hb_ot_name_id_t name_id)
{
if (verbose)
{
printf ("%s: ", label);
}
auto language = hb_language_get_default ();
if (language_str)
language = hb_language_from_string (language_str, -1);
char name[128];
unsigned name_len = sizeof name;
hb_ot_name_get_utf8 (face, name_id,
language,
&name_len, name);
printf ("%s\n", name);
}
void _show_family () { _show_name ("Family", 1); }
void _show_style ()
{
hb_ot_name_id_t name_id = 2;
unsigned named_instance = hb_font_get_var_named_instance (font);
if (named_instance != HB_FONT_NO_VAR_NAMED_INSTANCE)
name_id = hb_ot_var_named_instance_get_subfamily_name_id (face, named_instance);
_show_name ("Style", name_id);
}
void _show_unique_name () { _show_name ("Unique name", 3); }
void _show_full_name () { _show_name ("Full name", 4); }
void _show_postscript_name ()
{
hb_ot_name_id_t name_id = 6;
unsigned named_instance = hb_font_get_var_named_instance (font);
if (named_instance != HB_FONT_NO_VAR_NAMED_INSTANCE)
name_id = hb_ot_var_named_instance_get_postscript_name_id (face, named_instance);
_show_name ("Postscript name", name_id);
}
void _show_version () { _show_name ("Version", 5); }
void _show_upem ()
{
if (verbose)
{
printf ("Units-Per-EM: ");
}
printf ("%u\n", hb_face_get_upem (face));
}
void _show_unicode_count ()
{
if (verbose)
{
printf ("Unicode count: ");
}
hb_set_t *unicodes = hb_set_create ();
hb_face_collect_unicodes (face, unicodes);
printf ("%u\n", hb_set_get_population (unicodes));
hb_set_destroy (unicodes);
}
void _show_glyph_count ()
{
if (verbose)
{
printf ("Glyph count: ");
}
printf ("%u\n", hb_face_get_glyph_count (face));
}
void _show_extents ()
{
hb_direction_t direction = HB_DIRECTION_LTR;
if (direction_str)
direction = hb_direction_from_string (direction_str, -1);
hb_font_extents_t extents;
hb_font_get_extents_for_direction (font, direction, &extents);
if (verbose) printf ("Ascender: ");
printf ("%d\n", extents.ascender);
if (verbose) printf ("Descender: ");
printf ("%d\n", extents.descender);
if (verbose) printf ("Line gap: ");
printf ("%d\n", extents.line_gap);
}
void _list_names ()
{
if (verbose)
{
separator ();
printf ("Name information:\n\n");
printf ("Id Text\n------------\n");
}
auto language = hb_language_get_default ();
if (language_str)
language = hb_language_from_string (language_str, -1);
unsigned count;
const auto *entries = hb_ot_name_list_names (face, &count);
for (unsigned i = 0; i < count; i++)
{
char name[128];
unsigned name_len = sizeof name;
hb_ot_name_get_utf8 (face, entries[i].name_id,
language,
&name_len, name);
printf ("%u %s\n", entries[i].name_id, name);
}
}
void _list_tables ()
{
if (verbose)
{
separator ();
printf ("Table information:\n\n");
printf ("Tag Size\n------------\n");
}
unsigned count = hb_face_get_table_tags (face, 0, nullptr, nullptr);
hb_tag_t *tags = (hb_tag_t *) calloc (count, sizeof (hb_tag_t));
hb_face_get_table_tags (face, 0, &count, tags);
for (unsigned i = 0; i < count; i++)
{
hb_tag_t tag = tags[i];
hb_blob_t *blob = hb_face_reference_table (face, tag);
printf ("%c%c%c%c: %8u bytes\n", HB_UNTAG (tag), hb_blob_get_length (blob));
hb_blob_destroy (blob);
}
free (tags);
}
void
_list_unicodes ()
{
if (verbose)
{
separator ();
printf ("Character-set information:\n\n");
printf ("Unicode Glyph name\n------------------\n");
}
hb_set_t *unicodes = hb_set_create ();
hb_map_t *cmap = hb_map_create ();
hb_face_collect_nominal_glyph_mapping (face, cmap, unicodes);
for (hb_codepoint_t u = HB_SET_VALUE_INVALID;
hb_set_next (unicodes, &u);)
{
hb_codepoint_t gid = hb_map_get (cmap, u);
char glyphname[64];
hb_font_glyph_to_string (font, gid,
glyphname, sizeof glyphname);
printf ("U+%04X %s\n", u, glyphname);
}
hb_map_destroy (cmap);
/* List variation-selector sequences. */
hb_set_t *vars = hb_set_create ();
hb_face_collect_variation_selectors (face, vars);
for (hb_codepoint_t vs = HB_SET_VALUE_INVALID;
hb_set_next (vars, &vs);)
{
hb_set_clear (unicodes);
hb_face_collect_variation_unicodes (face, vs, unicodes);
for (hb_codepoint_t u = HB_SET_VALUE_INVALID;
hb_set_next (unicodes, &u);)
{
hb_codepoint_t gid = 0;
bool b = hb_font_get_variation_glyph (font, u, vs, &gid);
assert (b);
char glyphname[64];
hb_font_glyph_to_string (font, gid,
glyphname, sizeof glyphname);
printf ("U+%04X,U+%04X %s\n", vs, u, glyphname);
}
}
hb_set_destroy (vars);
hb_set_destroy (unicodes);
}
void
_list_glyphs ()
{
if (verbose)
{
separator ();
printf ("Glyph-set information:\n\n");
printf ("GlyphID Glyph name\n------------------\n");
}
unsigned num_glyphs = hb_face_get_glyph_count (face);
for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++)
{
char glyphname[64];
hb_font_glyph_to_string (font, gid,
glyphname, sizeof glyphname);
printf ("%u %s\n", gid, glyphname);
}
}
void
_list_scripts ()
{
if (verbose)
{
separator ();
printf ("Layout script information:\n\n");
}
hb_tag_t table_tags[] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS, HB_TAG_NONE};
for (unsigned int i = 0; table_tags[i]; i++)
{
printf ("Table: %c%c%c%c\n", HB_UNTAG (table_tags[i]));
hb_tag_t script_array[32];
unsigned script_count = sizeof script_array / sizeof script_array[0];
unsigned script_offset = 0;
do
{
hb_ot_layout_table_get_script_tags (face, table_tags[i],
script_offset,
&script_count,
script_array);
for (unsigned script_index = 0; script_index < script_count; script_index++)
{
printf (" Script: %c%c%c%c\n", HB_UNTAG (script_array[script_index]));
hb_tag_t language_array[32];
unsigned language_count = sizeof language_array / sizeof language_array[0];
unsigned language_offset = 0;
do
{
hb_ot_layout_script_get_language_tags (face, table_tags[i],
script_offset + script_index,
language_offset,
&language_count,
language_array);
for (unsigned language_index = 0; language_index < language_count; language_index++)
{
printf (" Language: %c%c%c%c\n", HB_UNTAG (language_array[language_index]));
}
language_offset += language_count;
}
while (language_count == sizeof language_array / sizeof language_array[0]);
}
script_offset += script_count;
}
while (script_count == sizeof script_array / sizeof script_array[0]);
}
}
void
_list_features ()
{
if (verbose)
{
separator ();
printf ("Layout features information:\n\n");
}
hb_tag_t table_tags[] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS, HB_TAG_NONE};
auto language = hb_language_get_default ();
if (language_str)
language = hb_language_from_string (language_str, -1);
hb_set_t *features = hb_set_create ();
for (unsigned int i = 0; table_tags[i]; i++)
{
printf ("Table: %c%c%c%c\n", HB_UNTAG (table_tags[i]));
hb_set_clear (features);
hb_tag_t feature_array[32];
unsigned feature_count = sizeof feature_array / sizeof feature_array[0];
unsigned feature_offset = 0;
do
{
hb_ot_layout_table_get_feature_tags (face, table_tags[i],
feature_offset,
&feature_count,
feature_array);
for (unsigned feature_index = 0; feature_index < feature_count; feature_index++)
{
if (hb_set_has (features, feature_array[feature_index]))
continue;
hb_set_add (features, feature_array[feature_index]);
hb_ot_name_id_t label_id;
hb_ot_layout_feature_get_name_ids (face,
table_tags[i],
feature_offset + feature_index,
&label_id,
nullptr,
nullptr,
nullptr,
nullptr);
char name[64];
unsigned name_len = sizeof name;
hb_ot_name_get_utf8 (face, label_id,
language,
&name_len, name);
printf (" Feature: %c%c%c%c", HB_UNTAG (feature_array[feature_index]));
if (*name)
printf (" \"%s\"", name);
printf ("\n");
}
feature_offset += feature_count;
}
while (feature_count == sizeof feature_array / sizeof feature_array[0]);
}
hb_set_destroy (features);
}
#ifndef HB_NO_VAR
void
_list_variations ()
{
if (verbose)
{
separator ();
printf ("Face variations information:\n\n");
}
hb_ot_var_axis_info_t *axes;
unsigned count = hb_ot_var_get_axis_infos (face, 0, nullptr, nullptr);
axes = (hb_ot_var_axis_info_t *) calloc (count, sizeof (hb_ot_var_axis_info_t));
hb_ot_var_get_axis_infos (face, 0, &count, axes);
auto language = hb_language_get_default ();
if (language_str)
language = hb_language_from_string (language_str, -1);
bool has_hidden = false;
if (verbose && count)
{
printf ("Varitation axes:\n\n");
printf ("Tag Minimum Default Maximum Name\n------------------------------------\n");
}
for (unsigned i = 0; i < count; i++)
{
const auto &axis = axes[i];
if (axis.flags & HB_OT_VAR_AXIS_FLAG_HIDDEN)
has_hidden = true;
char name[64];
unsigned name_len = sizeof name;
hb_ot_name_get_utf8 (face, axis.name_id,
language,
&name_len, name);
printf ("%c%c%c%c%s %g %g %g %s\n",
HB_UNTAG (axis.tag),
axis.flags & HB_OT_VAR_AXIS_FLAG_HIDDEN ? "*" : "",
(double) axis.min_value,
(double) axis.default_value,
(double) axis.max_value,
name);
}
if (verbose && has_hidden)
printf ("\n[*] Hidden axis\n\n");
free (axes);
axes = nullptr;
count = hb_ot_var_get_named_instance_count (face);
if (count)
{
if (verbose)
{
printf ("\nNamed instances:\n\n");
printf ("Index Name Position\n------------------------------------------------\n");
}
for (unsigned i = 0; i < count; i++)
{
char name[64];
unsigned name_len = sizeof name;
hb_ot_name_id_t name_id = hb_ot_var_named_instance_get_subfamily_name_id (face, i);
hb_ot_name_get_utf8 (face, name_id,
language,
&name_len, name);
unsigned coords_count = hb_ot_var_named_instance_get_design_coords (face, i, nullptr, nullptr);
float* coords;
coords = (float *) calloc (coords_count, sizeof (float));
hb_ot_var_named_instance_get_design_coords (face, i, &coords_count, coords);
printf ("%u %-32s", i, name);
for (unsigned j = 0; j < coords_count; j++)
printf ("%g, ", (double) coords[j]);
printf ("\n");
free (coords);
}
}
}
#endif
void
_dump_table ()
{
hb_blob_t *blob = hb_face_reference_table (face, hb_tag_from_string (dump_table, -1));
unsigned count = 0;
const char *data = hb_blob_get_data (blob, &count);
fwrite (data, 1, count, stdout);
hb_blob_destroy (blob);
}
};
template <typename consumer_t,
typename font_options_type>
struct main_font_t :
option_parser_t,
font_options_type,
consumer_t
{
int operator () (int argc, char **argv)
{
add_options ();
if (argc == 2)
consumer_t::show_all = true;
parse (&argc, &argv);
consumer_t::operator () (this);
return 0;
}
protected:
void add_options ()
{
font_options_type::add_options (this);
consumer_t::add_options (this);
GOptionEntry entries[] =
{
{"quiet", 'q', 0, G_OPTION_ARG_NONE, &this->quiet, "Generate machine-readable output", nullptr},
{G_OPTION_REMAINING, 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_CALLBACK, (gpointer) &collect_rest, nullptr, "[FONT-FILE]"},
{nullptr}
};
add_main_group (entries, this);
option_parser_t::add_options ();
}
private:
static gboolean
collect_rest (const char *name G_GNUC_UNUSED,
const char *arg,
gpointer data,
GError **error)
{
main_font_t *thiz = (main_font_t *) data;
if (!thiz->font_file)
{
thiz->font_file = g_strdup (arg);
return true;
}
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
"Too many arguments on the command line");
return false;
}
public:
hb_bool_t quiet = false;
};
int
main (int argc, char **argv)
{
using main_t = main_font_t<info_t, font_options_t>;
return batch_main<main_t> (argc, argv);
}
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