Google Git
Sign in
flutter / third_party / harfbuzz / 52bc78e70de9f8288e3412a8017f88d2e0a31dea / . / util / hb-info.cc
blob: e514f9055333930e2b94850a2f6b20f900be1aac [file] [log] [blame]
/*
* Copyright © 2023 Behdad Esfahbod
*
* 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"
#ifdef HB_HAS_GOBJECT
#include <hb-gobject.h>
#endif
#ifdef HAVE_CHAFA
# include <chafa.h>
#endif
const unsigned DEFAULT_FONT_SIZE = FONT_SIZE_UPEM;
const unsigned SUBPIXEL_BITS = 0;
static void
_hb_ot_name_get_utf8 (hb_face_t *face,
hb_ot_name_id_t name_id,
hb_language_t language,
unsigned int *text_size /* IN/OUT */,
char *text /* OUT */)
{
static hb_language_t en = hb_language_from_string ("en", -1);
unsigned len = *text_size;
if (!hb_ot_name_get_utf8 (face, name_id,
language,
&len, text))
{
len = *text_size;
hb_ot_name_get_utf8 (face, name_id,
en,
&len, text);
}
*text_size = len;
}
struct info_t :
option_parser_t,
font_options_t
{
void add_options ()
{
font_options_t::add_options (this);
GOptionEntry misc_entries[] =
{
{"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction_str, "Set direction (default: ltr)", "ltr/rtl/ttb/btt"},
{"script", 0, 0, G_OPTION_ARG_STRING, &this->script_str, "Set script (default: none)", "ISO-15924 tag; eg. 'Latn'"},
{"language", 0, 0, G_OPTION_ARG_STRING, &this->language_str, "Set language (default: $LANG)", "BCP 47 tag; eg. 'en'"},
{"ot-script", 0, 0, G_OPTION_ARG_STRING, &this->ot_script_str, "Set OpenType script tag (default: none)","tag; eg. 'latn'"},
{"ot-language", 0, 0, G_OPTION_ARG_STRING, &this->ot_language_str, "Set OpenType language tag (default: none)", "tag; eg. 'ENG'"},
{nullptr}
};
add_group (misc_entries,
"misc",
"Miscellaneous options:",
"Miscellaneous 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-face-count",0, 0, G_OPTION_ARG_NONE, &this->show_face_count, "Show face count", nullptr},
{"show-family", 0, 0, G_OPTION_ARG_NONE, &this->show_family, "Show family name", nullptr},
{"show-subfamily",0, 0, G_OPTION_ARG_NONE, &this->show_subfamily, "Show subfamily 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-technology",0, 0, G_OPTION_ARG_NONE, &this->show_technology, "Show technology", 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-upem", 0, 0, G_OPTION_ARG_NONE, &this->show_upem, "Show Units-Per-EM", nullptr},
{"show-extents", 0, 0, G_OPTION_ARG_NONE, &this->show_extents, "Show extents", nullptr},
{"get-name", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_name, "Get name", "name id; eg. '13'"},
{"get-style", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_style, "Get style", "style tag; eg. 'wght'"},
{"get-metric", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_metric, "Get metric", "metric tag; eg. 'hasc'"},
{"get-baseline", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_baseline, "Get baseline", "baseline tag; eg. 'hang'"},
{"get-meta", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_meta, "Get meta information", "tag tag; eg. 'dlng'"},
{"get-table", 0, 0, G_OPTION_ARG_STRING, &this->get_table, "Get font table", "table tag; eg. 'cmap'"},
{"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},
#ifdef HB_HAS_GOBJECT
{"list-style", 0, 0, G_OPTION_ARG_NONE, &this->list_style, "List style", nullptr},
{"list-metrics", 0, 0, G_OPTION_ARG_NONE, &this->list_metrics, "List metrics", nullptr},
{"list-baselines",0, 0, G_OPTION_ARG_NONE, &this->list_baselines, "List baselines", nullptr},
#endif
{"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
{"list-palettes", 0, 0, G_OPTION_ARG_NONE, &this->list_palettes, "List color palettes", nullptr},
{"list-meta", 0, 0, G_OPTION_ARG_NONE, &this->list_meta, "List meta information", nullptr},
{nullptr}
};
add_group (query_entries,
"query",
"Query options:",
"Options to query the font instance",
this,
true);
GOptionEntry entries[] =
{
{"quiet", 'q', G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->verbose, "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 ();
}
static gboolean
collect_rest (const char *name G_GNUC_UNUSED,
const char *arg,
gpointer data,
GError **error)
{
info_t *thiz = (info_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;
}
protected:
hb_bool_t verbose = true;
hb_bool_t first_item = true;
char *direction_str = nullptr;
char *script_str = nullptr;
char *language_str = nullptr;
hb_direction_t direction = HB_DIRECTION_LTR;
hb_script_t script = HB_SCRIPT_INVALID;
hb_language_t language = HB_LANGUAGE_INVALID;
char *ot_script_str = nullptr;
char *ot_language_str = nullptr;
hb_bool_t all = false;
hb_bool_t show_all = false;
hb_bool_t show_face_count = false;
hb_bool_t show_family = false;
hb_bool_t show_subfamily = 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_technology = false;
hb_bool_t show_unicode_count = false;
hb_bool_t show_glyph_count = false;
hb_bool_t show_upem = false;
hb_bool_t show_extents = false;
char **get_name = nullptr;
char **get_style = nullptr;
char **get_metric = nullptr;
char **get_baseline = nullptr;
char **get_meta = nullptr;
char *get_table = nullptr;
hb_bool_t list_all = false;
hb_bool_t list_names = false;
#ifdef HB_HAS_GOBJECT
hb_bool_t list_style = false;
hb_bool_t list_metrics = false;
hb_bool_t list_baselines = false;
#endif
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
hb_bool_t list_palettes = false;
hb_bool_t list_meta = false;
public:
void
post_parse (GError **error)
{
if (direction_str)
direction = hb_direction_from_string (direction_str, -1);
if (script_str)
script = hb_script_from_string (script_str, -1);
language = hb_language_get_default ();
if (language_str)
language = hb_language_from_string (language_str, -1);
}
int
operator () (int argc, char **argv)
{
add_options ();
if (argc == 2)
show_all = true;
parse (&argc, &argv);
if (all)
{
show_all =
list_all =
true;
}
if (show_all)
{
show_face_count =
show_family =
show_subfamily =
show_unique_name =
show_full_name =
show_postscript_name =
show_version =
show_technology =
show_unicode_count =
show_glyph_count =
show_upem =
show_extents =
true;
first_item = false;
}
if (list_all)
{
list_names =
#ifdef HB_HAS_GOBJECT
list_style =
list_metrics =
list_baselines =
#endif
list_tables =
list_unicodes =
list_glyphs =
list_scripts =
list_features =
#ifndef HB_NO_VAR
list_variations =
#endif
list_palettes =
list_meta =
true;
}
if (show_face_count) _show_face_count ();
if (show_family) _show_family ();
if (show_subfamily) _show_subfamily ();
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_technology) _show_technology ();
if (show_unicode_count)_show_unicode_count ();
if (show_glyph_count) _show_glyph_count ();
if (show_upem) _show_upem ();
if (show_extents) _show_extents ();
if (get_name) _get_name ();
if (get_style) _get_style ();
if (get_metric) _get_metric ();
if (get_baseline) _get_baseline ();
if (get_meta) _get_meta ();
if (get_table) _get_table ();
if (list_names) _list_names ();
#ifdef HB_HAS_GOBJECT
if (list_style) _list_style ();
if (list_metrics) _list_metrics ();
if (list_baselines) _list_baselines ();
#endif
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 (list_palettes) _list_palettes ();
if (list_meta) _list_meta ();
return 0;
}
protected:
void separator ()
{
if (first_item)
{
first_item = false;
return;
}
printf ("\n===\n\n");
}
void
_show_face_count ()
{
printf ("Face count: %u\n", hb_face_count (blob));
}
void
_show_name (const char *label, hb_ot_name_id_t name_id)
{
if (verbose)
{
printf ("%s: ", label);
}
char name[16384];
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_subfamily ()
{
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 ("Subfamily", 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); }
bool _has_blob (hb_tag_t tag)
{
hb_blob_t *blob = hb_face_reference_table (face, tag);
bool ret = hb_blob_get_length (blob);
hb_blob_destroy (blob);
return ret;
}
void _show_technology ()
{
if (_has_blob (HB_TAG('g','l','y','f')))
printf ("Has TrueType outlines\n");
if (_has_blob (HB_TAG('C','F','F',' ')) || _has_blob (HB_TAG('C','F','F','2')))
printf ("Has Postscript outlines\n");
if (_has_blob (HB_TAG('f','p','g','m')) || _has_blob (HB_TAG('p','r','e','p')) || _has_blob (HB_TAG('c','v','t',' ')))
printf ("Has TrueType hinting\n");
if (_has_blob (HB_TAG('G','S','U','B')) || _has_blob (HB_TAG('G','P','O','S')))
printf ("Has OpenType layout\n");
if (_has_blob (HB_TAG('m','o','r','x')) || _has_blob (HB_TAG('k','e','r','x')))
printf ("Has AAT layout\n");
if (_has_blob (HB_TAG('S','i','l','f')))
printf ("Has Graphite layout\n");
if (_has_blob (HB_TAG('k','e','r','n')))
printf ("Has legacy kerning\n");
if (_has_blob (HB_TAG('E','B','D','T')))
printf ("Has monochrome bitmaps\n");
if (_has_blob (HB_TAG('C','B','D','T')) || _has_blob (HB_TAG('s','b','i','x')))
printf ("Has color bitmaps\n");
if (_has_blob (HB_TAG('S','V','G',' ')))
printf ("Has color SVGs\n");
if (_has_blob (HB_TAG('C','O','L','R')))
printf ("Has color paintings\n");
if (_has_blob (HB_TAG('f','v','a','r'))) printf ("Has variations\n");
}
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_upem ()
{
if (verbose)
{
printf ("Units-Per-EM: ");
}
printf ("%u\n", hb_face_get_upem (face));
}
void _show_extents ()
{
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 _get_name ()
{
for (char **p = get_name; *p; p++)
{
hb_ot_name_id_t name_id = (hb_ot_name_id_t) atoi (*p);
_show_name (*p, name_id);
}
}
void _get_style ()
{
for (char **p = get_style; *p; p++)
{
hb_style_tag_t tag = (hb_style_tag_t) hb_tag_from_string (*p, -1);
if (verbose)
printf ("Style %c%c%c%c: ", HB_UNTAG (tag));
float v = hb_style_get_value (font, tag);
printf ("%g\n", (double) v);
}
}
void _get_metric ()
{
bool fallback = false;
for (char **p = get_metric; *p; p++)
{
hb_ot_metrics_tag_t tag = (hb_ot_metrics_tag_t) hb_tag_from_string (*p, -1);
hb_position_t position;
if (verbose)
printf ("Metric %c%c%c%c: ", HB_UNTAG (tag));
if (hb_ot_metrics_get_position (font, tag, &position))
printf ("%d \n", position);
else
{
hb_ot_metrics_get_position_with_fallback (font, tag, &position);
printf ("%d *\n", position);
fallback = true;
}
}
if (verbose && fallback)
{
printf ("\n[*] Fallback value\n");
}
}
void _get_baseline ()
{
hb_tag_t script_tags[HB_OT_MAX_TAGS_PER_SCRIPT];
hb_tag_t language_tags[HB_OT_MAX_TAGS_PER_LANGUAGE];
unsigned script_count = HB_OT_MAX_TAGS_PER_SCRIPT;
unsigned language_count = HB_OT_MAX_TAGS_PER_LANGUAGE;
hb_ot_tags_from_script_and_language (script, language,
&script_count, script_tags,
&language_count, language_tags);
hb_tag_t script_tag = script_count ? script_tags[script_count - 1] : HB_TAG_NONE;
hb_tag_t language_tag = language_count ? language_tags[0] : HB_TAG_NONE;
if (ot_script_str)
script_tag = hb_tag_from_string (ot_script_str, -1);
if (ot_language_str)
language_tag = hb_tag_from_string (ot_language_str, -1);
bool fallback = false;
for (char **p = get_baseline; *p; p++)
{
hb_ot_layout_baseline_tag_t tag = (hb_ot_layout_baseline_tag_t) hb_tag_from_string (*p, -1);
hb_position_t position;
if (verbose)
printf ("Baseline %c%c%c%c: ", HB_UNTAG (tag));
if (hb_ot_layout_get_baseline (font, tag, direction, script_tag, language_tag, &position))
printf ("%d \n", position);
else
{
hb_ot_layout_get_baseline_with_fallback (font, tag, direction, script_tag, language_tag, &position);
printf ("%d *\n", position);
fallback = true;
}
}
if (verbose && fallback)
{
printf ("\n[*] Fallback value\n");
}
}
void _get_meta ()
{
for (char **p = get_meta; *p; p++)
{
hb_ot_meta_tag_t tag = (hb_ot_meta_tag_t) hb_tag_from_string (*p, -1);
hb_blob_t *blob = hb_ot_meta_reference_entry (face, tag);
if (verbose)
printf ("Meta %c%c%c%c: ", HB_UNTAG (tag));
printf ("%.*s\n",
(int) hb_blob_get_length (blob),
hb_blob_get_data (blob, nullptr));
hb_blob_destroy (blob);
}
}
void
_get_table ()
{
hb_blob_t *blob = hb_face_reference_table (face, hb_tag_from_string (get_table, -1));
unsigned count = 0;
const char *data = hb_blob_get_data (blob, &count);
fwrite (data, 1, count, stdout);
hb_blob_destroy (blob);
}
void _list_names ()
{
if (verbose)
{
separator ();
printf ("Name information:\n\n");
printf ("Id: Name Text\n------------------------------------\n");
}
#ifdef HB_HAS_GOBJECT
GEnumClass *enum_class = (GEnumClass *) g_type_class_ref ((GType) HB_GOBJECT_TYPE_OT_NAME_ID_PREDEFINED);
#endif
unsigned count;
const auto *entries = hb_ot_name_list_names (face, &count);
for (unsigned i = 0; i < count; i++)
{
char name[16384];
unsigned name_len = sizeof name;
_hb_ot_name_get_utf8 (face, entries[i].name_id,
language,
&name_len, name);
#ifdef HB_HAS_GOBJECT
if (verbose)
{
GEnumValue *enum_value = g_enum_get_value (enum_class, entries[i].name_id);
printf ("%u: %-27s %s\n", entries[i].name_id, enum_value ? enum_value->value_nick : "", name);
}
else
#endif
printf ("%u %s\n", entries[i].name_id, name);
}
}
#ifdef HB_HAS_GOBJECT
void _list_style ()
{
if (verbose)
{
separator ();
printf ("Style information:\n\n");
printf ("Tag: Name Value\n---------------------------------------------\n");
}
GEnumClass *enum_class = (GEnumClass *) g_type_class_ref ((GType) HB_GOBJECT_TYPE_STYLE_TAG);
unsigned count = enum_class->n_values;
const auto *entries = enum_class->values;
for (unsigned i = 0; i < count; i++)
{
float v = hb_style_get_value (font, (hb_style_tag_t) entries[i].value);
printf ("%c%c%c%c", HB_UNTAG(entries[i].value));
if (verbose)
printf (": %-33s", entries[i].value_nick);
printf (" %g\n", (double) v);
}
}
void _list_metrics ()
{
if (verbose)
{
separator ();
printf ("Metrics information:\n\n");
printf ("Tag: Name Value\n---------------------------------------------\n");
}
GEnumClass *enum_class = (GEnumClass *) g_type_class_ref ((GType) HB_GOBJECT_TYPE_OT_METRICS_TAG);
bool any_fallback = false;
unsigned count = enum_class->n_values;
const auto *entries = enum_class->values;
for (unsigned i = 0; i < count; i++)
{
bool fallback = false;
hb_position_t v;
if (!hb_ot_metrics_get_position (font,
(hb_ot_metrics_tag_t) entries[i].value,
&v))
{
hb_ot_metrics_get_position_with_fallback (font,
(hb_ot_metrics_tag_t) entries[i].value,
&v);
any_fallback = fallback = true;
}
printf ("%c%c%c%c", HB_UNTAG(entries[i].value));
if (verbose)
printf (": %-33s", entries[i].value_nick);
printf (" %d ", v);
if (fallback)
printf ("*");
printf ("\n");
}
if (verbose && any_fallback)
{
printf ("\n[*] Fallback value\n");
}
}
void _list_baselines ()
{
hb_tag_t script_tags[HB_OT_MAX_TAGS_PER_SCRIPT];
hb_tag_t language_tags[HB_OT_MAX_TAGS_PER_LANGUAGE];
unsigned script_count = HB_OT_MAX_TAGS_PER_SCRIPT;
unsigned language_count = HB_OT_MAX_TAGS_PER_LANGUAGE;
hb_ot_tags_from_script_and_language (script, language,
&script_count, script_tags,
&language_count, language_tags);
hb_tag_t script_tag = script_count ? script_tags[script_count - 1] : HB_TAG_NONE;
hb_tag_t language_tag = language_count ? language_tags[0] : HB_TAG_NONE;
if (ot_script_str)
script_tag = hb_tag_from_string (ot_script_str, -1);
if (ot_language_str)
language_tag = hb_tag_from_string (ot_language_str, -1);
if (verbose)
{
separator ();
printf ("Baselines information:\n\n");
printf ("Tag: Name Value\n---------------------------------------------\n");
}
GEnumClass *enum_class = (GEnumClass *) g_type_class_ref ((GType) HB_GOBJECT_TYPE_OT_LAYOUT_BASELINE_TAG);
bool any_fallback = false;
unsigned count = enum_class->n_values;
const auto *entries = enum_class->values;
for (unsigned i = 0; i < count; i++)
{
bool fallback = false;
hb_position_t v;
if (!hb_ot_layout_get_baseline (font, (hb_ot_layout_baseline_tag_t) entries[i].value,
direction, script_tag, language_tag,
&v))
{
hb_ot_layout_get_baseline_with_fallback (font, (hb_ot_layout_baseline_tag_t) entries[i].value,
direction, script_tag, language_tag,
&v);
any_fallback = fallback = true;
}
printf ("%c%c%c%c", HB_UNTAG(entries[i].value));
if (verbose)
printf (": %-33s", entries[i].value_nick);
printf (" %d ", v);
if (fallback)
printf ("*");
printf ("\n");
}
if (verbose && any_fallback)
{
printf ("\n[*] Fallback value\n");
}
}
#endif
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;
HB_UNUSED 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++)
{
if (verbose) printf ("Table: ");
printf ("%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 (" ");
if (verbose) printf ("Script: ");
hb_tag_t hb_sc = hb_script_to_iso15924_tag (hb_ot_tag_to_script (script_array[script_index]));
if (script_array[script_index] == HB_TAG ('D','F','L','T'))
hb_sc = HB_SCRIPT_COMMON;
printf ("%c%c%c%c (%c%c%c%c)\n",
HB_UNTAG (hb_sc),
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 (" ");
if (verbose) printf ("Language: ");
printf ("%s (%c%c%c%c)\n",
hb_language_to_string (hb_ot_tag_to_language (language_array[language_index])),
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_no_script ()
{
if (verbose)
{
printf ("Showing all font features with duplicates removed.\n\n");
}
hb_tag_t table_tags[] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS, HB_TAG_NONE};
hb_set_t *features = hb_set_create ();
for (unsigned int i = 0; table_tags[i]; i++)
{
if (verbose) printf ("Table: ");
printf ("%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 (" ");
if (verbose) printf ("Feature: ");
printf ("%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);
}
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};
if (script == HB_SCRIPT_INVALID && !ot_script_str)
{
_list_features_no_script ();
return;
}
for (unsigned int i = 0; table_tags[i]; i++)
{
if (verbose) printf ("Table: ");
printf ("%c%c%c%c\n", HB_UNTAG (table_tags[i]));
auto table_tag = table_tags[i];
hb_tag_t script_tags[HB_OT_MAX_TAGS_PER_SCRIPT];
hb_tag_t language_tags[HB_OT_MAX_TAGS_PER_LANGUAGE];
unsigned script_count = HB_OT_MAX_TAGS_PER_SCRIPT;
unsigned language_count = HB_OT_MAX_TAGS_PER_LANGUAGE;
hb_ot_tags_from_script_and_language (script, language,
&script_count, script_tags,
&language_count, language_tags);
if (ot_script_str)
{
script_tags[0] = hb_tag_from_string (ot_script_str, -1);
script_count = 1;
}
if (ot_language_str)
{
language_tags[0] = hb_tag_from_string (ot_language_str, -1);
language_count = 1;
}
unsigned script_index;
hb_tag_t chosen_script;
hb_ot_layout_table_select_script (face, table_tag,
script_count, script_tags,
&script_index, &chosen_script);
unsigned language_index;
hb_tag_t chosen_language;
hb_ot_layout_script_select_language2 (face, table_tag,
script_index,
language_count, language_tags,
&language_index, &chosen_language);
if (verbose)
{
if (chosen_script)
{
printf (" Script: %c%c%c%c\n", HB_UNTAG (chosen_script));
if (chosen_language)
printf (" Language: %c%c%c%c\n", HB_UNTAG (chosen_language));
else
printf (" Language: Default\n");
}
}
unsigned feature_array[32];
unsigned feature_count = sizeof feature_array / sizeof feature_array[0];
unsigned feature_offset = 0;
do
{
hb_ot_layout_language_get_feature_indexes (face, table_tag,
script_index, language_index,
feature_offset,
&feature_count,
feature_array);
for (unsigned feature_index = 0; feature_index < feature_count; feature_index++)
{
hb_ot_name_id_t label_id;
hb_ot_layout_feature_get_name_ids (face,
table_tags[i],
feature_array[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 (" ");
if (verbose) printf ("Feature: ");
hb_tag_t feature_tag;
unsigned f_count = 1;
hb_ot_layout_table_get_feature_tags (face, table_tag,
feature_array[feature_index],
&f_count, &feature_tag);
printf ("%c%c%c%c", HB_UNTAG (feature_tag));
if (*name)
printf (" %s", name);
printf ("\n");
}
feature_offset += feature_count;
}
while (feature_count == sizeof feature_array / sizeof feature_array[0]);
}
}
#ifndef HB_NO_VAR
void
_list_variations ()
{
if (verbose)
{
separator ();
printf ("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);
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");
free (axes);
axes = nullptr;
count = hb_ot_var_get_named_instance_count (face);
if (count)
{
if (verbose)
{
printf ("\n\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
#ifdef HAVE_CHAFA
GString *
_palette_chafa_str (unsigned palette_index)
{
unsigned count = hb_ot_color_palette_get_colors (face, palette_index, 0,
nullptr, nullptr);
hb_color_t *palette = (hb_color_t *) malloc (count * sizeof (hb_color_t));
hb_ot_color_palette_get_colors (face, palette_index, 0,
&count, palette);
#define REPEAT 16
hb_color_t *data = (hb_color_t *) malloc (count * REPEAT * sizeof (hb_color_t));
for (unsigned i = 0; i < count; i++)
for (unsigned j = 0; j < REPEAT; j++)
data[i * REPEAT + j] = palette[i];
free (palette);
palette = nullptr;
chafa_set_n_threads (1); // https://github.com/hpjansson/chafa/issues/125#issuecomment-1397475217
//
gchar **environ = g_get_environ ();
ChafaTermInfo *term_info = chafa_term_db_detect (chafa_term_db_get_default (),
environ);
ChafaCanvasMode mode;
ChafaPixelMode pixel_mode = CHAFA_PIXEL_MODE_SYMBOLS;
if (chafa_term_info_have_seq (term_info, CHAFA_TERM_SEQ_SET_COLOR_FGBG_DIRECT))
mode = CHAFA_CANVAS_MODE_TRUECOLOR;
else if (chafa_term_info_have_seq (term_info, CHAFA_TERM_SEQ_SET_COLOR_FGBG_256))
mode = CHAFA_CANVAS_MODE_INDEXED_240;
else if (chafa_term_info_have_seq (term_info, CHAFA_TERM_SEQ_SET_COLOR_FGBG_16))
mode = CHAFA_CANVAS_MODE_INDEXED_16;
else if (chafa_term_info_have_seq (term_info, CHAFA_TERM_SEQ_INVERT_COLORS))
mode = CHAFA_CANVAS_MODE_FGBG_BGFG;
else
mode = CHAFA_CANVAS_MODE_FGBG;
ChafaSymbolMap *symbol_map = chafa_symbol_map_new ();
chafa_symbol_map_add_by_tags (symbol_map,
(ChafaSymbolTags) (CHAFA_SYMBOL_TAG_BLOCK));
ChafaCanvasConfig *config = chafa_canvas_config_new ();
chafa_canvas_config_set_canvas_mode (config, mode);
chafa_canvas_config_set_pixel_mode (config, pixel_mode);
chafa_canvas_config_set_cell_geometry (config, REPEAT, 1);
chafa_canvas_config_set_geometry (config, 2 * count, 1);
chafa_canvas_config_set_symbol_map (config, symbol_map);
chafa_canvas_config_set_color_extractor (config, CHAFA_COLOR_EXTRACTOR_MEDIAN);
chafa_canvas_config_set_work_factor (config, 1.0f);
ChafaCanvas *canvas = chafa_canvas_new (config);
chafa_canvas_draw_all_pixels (canvas,
G_BYTE_ORDER == G_BIG_ENDIAN
? CHAFA_PIXEL_BGRA8_UNASSOCIATED
: CHAFA_PIXEL_ARGB8_UNASSOCIATED,
(const guint8 *) data,
count * REPEAT,
1,
sizeof (hb_color_t));
free (data);
auto gs = chafa_canvas_print (canvas, term_info);
chafa_canvas_unref (canvas);
chafa_canvas_config_unref (config);
chafa_symbol_map_unref (symbol_map);
chafa_term_info_unref (term_info);
g_strfreev (environ);
return gs;
}
#endif
void
_list_palettes ()
{
if (verbose)
{
separator ();
printf ("Color palettes information:\n");
}
{
if (verbose)
{
printf ("\nPalettes:\n\n");
printf ("Index Flags Name\n--------------------\n");
}
unsigned count = hb_ot_color_palette_get_count (face);
for (unsigned i = 0; i < count; i++)
{
hb_ot_name_id_t name_id = hb_ot_color_palette_get_name_id (face, i);
hb_ot_color_palette_flags_t flags = hb_ot_color_palette_get_flags (face, i);
char name[64];
unsigned name_len = sizeof name;
_hb_ot_name_get_utf8 (face, name_id,
language,
&name_len, name);
const char *type = "";
if (flags)
{
if (flags & HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_LIGHT_BACKGROUND)
{
if (flags & HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_DARK_BACKGROUND)
type = "Both";
else
type = "Light";
}
else {
type = "Dark";
}
}
#ifdef HAVE_CHAFA
char *chafa_env = getenv ("HB_CHAFA");
bool use_chafa = !chafa_env || atoi (chafa_env);
if (verbose && use_chafa && isatty (fileno (stdout)))
{
GString *chafa_str = _palette_chafa_str (i);
printf ("%u %s %-23s %*s\n", i, type, name,
(int) chafa_str->len, chafa_str->str);
g_string_free (chafa_str, TRUE);
}
else
#endif
printf ("%u %s %s\n", i, type, name);
}
}
{
if (verbose)
{
printf ("\nColors:\n\n");
printf ("Index Name\n------------\n");
}
unsigned count = hb_ot_color_palette_get_colors (face, 0, 0, nullptr, nullptr);
for (unsigned i = 0; i < count; i++)
{
hb_ot_name_id_t name_id = hb_ot_color_palette_color_get_name_id (face, i);
char name[64];
unsigned name_len = sizeof name;
_hb_ot_name_get_utf8 (face, name_id,
language,
&name_len, name);
printf ("%u %s\n", i, name);
}
}
}
void
_list_meta ()
{
if (verbose)
{
separator ();
printf ("Meta information:\n");
}
{
if (verbose)
{
printf ("\nTag Data\n------------\n");
}
unsigned count = hb_ot_meta_get_entry_tags (face, 0, nullptr, nullptr);
for (unsigned i = 0; i < count; i++)
{
hb_ot_meta_tag_t tag;
unsigned len = 1;
hb_ot_meta_get_entry_tags (face, i, &len, &tag);
hb_blob_t *blob = hb_ot_meta_reference_entry (face, tag);
printf ("%c%c%c%c %.*s\n", HB_UNTAG (tag),
(int) hb_blob_get_length (blob),
hb_blob_get_data (blob, nullptr));
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;
}
};
int
main (int argc, char **argv)
{
return batch_main<info_t> (argc, argv);
}