1037 lines
32 KiB
C++
1037 lines
32 KiB
C++
/*
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* Copyright © 2011,2012 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod
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*/
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#include "options.hh"
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#ifdef HAVE_FREETYPE
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#include <hb-ft.h>
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#endif
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#include <hb-ot.h>
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static struct supported_font_funcs_t {
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char name[4];
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void (*func) (hb_font_t *);
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} supported_font_funcs[] =
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{
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#ifdef HAVE_FREETYPE
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{"ft", hb_ft_font_set_funcs},
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#endif
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{"ot", hb_ot_font_set_funcs},
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};
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void
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fail (hb_bool_t suggest_help, const char *format, ...)
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{
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const char *msg;
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va_list vap;
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va_start (vap, format);
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msg = g_strdup_vprintf (format, vap);
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va_end (vap);
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const char *prgname = g_get_prgname ();
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g_printerr ("%s: %s\n", prgname, msg);
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if (suggest_help)
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g_printerr ("Try `%s --help' for more information.\n", prgname);
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exit (1);
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}
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static gchar *
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shapers_to_string ()
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{
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GString *shapers = g_string_new (nullptr);
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const char **shaper_list = hb_shape_list_shapers ();
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for (; *shaper_list; shaper_list++) {
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g_string_append (shapers, *shaper_list);
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g_string_append_c (shapers, ',');
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}
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g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1));
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return g_string_free (shapers, false);
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}
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static G_GNUC_NORETURN gboolean
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show_version (const char *name G_GNUC_UNUSED,
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const char *arg G_GNUC_UNUSED,
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gpointer data G_GNUC_UNUSED,
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GError **error G_GNUC_UNUSED)
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{
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g_printf ("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
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char *shapers = shapers_to_string ();
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g_printf ("Available shapers: %s\n", shapers);
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g_free (shapers);
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if (strcmp (HB_VERSION_STRING, hb_version_string ()))
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g_printf ("Linked HarfBuzz library has a different version: %s\n", hb_version_string ());
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exit(0);
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}
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void
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option_parser_t::add_main_options ()
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{
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GOptionEntry entries[] =
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{
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{"version", 0, G_OPTION_FLAG_NO_ARG,
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G_OPTION_ARG_CALLBACK, (gpointer) &show_version, "Show version numbers", nullptr},
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{nullptr}
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};
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g_option_context_add_main_entries (context, entries, nullptr);
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}
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static gboolean
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pre_parse (GOptionContext *context G_GNUC_UNUSED,
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GOptionGroup *group G_GNUC_UNUSED,
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gpointer data,
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GError **error)
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{
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option_group_t *option_group = (option_group_t *) data;
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option_group->pre_parse (error);
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return *error == nullptr;
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}
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static gboolean
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post_parse (GOptionContext *context G_GNUC_UNUSED,
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GOptionGroup *group G_GNUC_UNUSED,
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gpointer data,
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GError **error)
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{
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option_group_t *option_group = static_cast<option_group_t *>(data);
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option_group->post_parse (error);
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return *error == nullptr;
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}
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void
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option_parser_t::add_group (GOptionEntry *entries,
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const gchar *name,
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const gchar *description,
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const gchar *help_description,
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option_group_t *option_group)
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{
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GOptionGroup *group = g_option_group_new (name, description, help_description,
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static_cast<gpointer>(option_group), nullptr);
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g_option_group_add_entries (group, entries);
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g_option_group_set_parse_hooks (group, pre_parse, post_parse);
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g_option_context_add_group (context, group);
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}
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void
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option_parser_t::parse (int *argc, char ***argv)
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{
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setlocale (LC_ALL, "");
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GError *parse_error = nullptr;
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if (!g_option_context_parse (context, argc, argv, &parse_error))
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{
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if (parse_error != nullptr) {
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fail (true, "%s", parse_error->message);
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//g_error_free (parse_error);
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} else
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fail (true, "Option parse error");
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}
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}
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static gboolean
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parse_margin (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error G_GNUC_UNUSED)
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{
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view_options_t *view_opts = (view_options_t *) data;
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view_options_t::margin_t &m = view_opts->margin;
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switch (sscanf (arg, "%lf%*[ ,]%lf%*[ ,]%lf%*[ ,]%lf", &m.t, &m.r, &m.b, &m.l)) {
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case 1: m.r = m.t; HB_FALLTHROUGH;
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case 2: m.b = m.t; HB_FALLTHROUGH;
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case 3: m.l = m.r; HB_FALLTHROUGH;
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case 4: return true;
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default:
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"%s argument should be one to four space-separated numbers",
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name);
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return false;
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}
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}
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static gboolean
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parse_shapers (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error)
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{
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shape_options_t *shape_opts = (shape_options_t *) data;
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char **shapers = g_strsplit (arg, ",", 0);
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for (char **shaper = shapers; *shaper; shaper++) {
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bool found = false;
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for (const char **hb_shaper = hb_shape_list_shapers (); *hb_shaper; hb_shaper++) {
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if (strcmp (*shaper, *hb_shaper) == 0) {
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found = true;
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break;
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}
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}
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if (!found) {
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Unknown or unsupported shaper: %s", *shaper);
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g_strfreev (shapers);
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return false;
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}
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}
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g_strfreev (shape_opts->shapers);
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shape_opts->shapers = shapers;
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return true;
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}
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static G_GNUC_NORETURN gboolean
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list_shapers (const char *name G_GNUC_UNUSED,
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const char *arg G_GNUC_UNUSED,
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gpointer data G_GNUC_UNUSED,
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GError **error G_GNUC_UNUSED)
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{
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for (const char **shaper = hb_shape_list_shapers (); *shaper; shaper++)
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g_printf ("%s\n", *shaper);
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exit(0);
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}
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static gboolean
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parse_features (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error G_GNUC_UNUSED)
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{
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shape_options_t *shape_opts = (shape_options_t *) data;
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char *s = (char *) arg;
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char *p;
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shape_opts->num_features = 0;
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g_free (shape_opts->features);
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shape_opts->features = nullptr;
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if (!*s)
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return true;
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/* count the features first, so we can allocate memory */
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p = s;
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do {
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shape_opts->num_features++;
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p = strchr (p, ',');
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if (p)
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p++;
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} while (p);
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shape_opts->features = (hb_feature_t *) calloc (shape_opts->num_features, sizeof (*shape_opts->features));
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if (!shape_opts->features)
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return false;
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/* now do the actual parsing */
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p = s;
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shape_opts->num_features = 0;
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while (p && *p) {
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char *end = strchr (p, ',');
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if (hb_feature_from_string (p, end ? end - p : -1, &shape_opts->features[shape_opts->num_features]))
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shape_opts->num_features++;
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p = end ? end + 1 : nullptr;
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}
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return true;
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}
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static gboolean
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parse_variations (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error G_GNUC_UNUSED)
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{
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font_options_t *font_opts = (font_options_t *) data;
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char *s = (char *) arg;
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char *p;
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font_opts->num_variations = 0;
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g_free (font_opts->variations);
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font_opts->variations = nullptr;
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if (!*s)
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return true;
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/* count the variations first, so we can allocate memory */
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p = s;
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do {
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font_opts->num_variations++;
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p = strchr (p, ',');
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if (p)
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p++;
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} while (p);
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font_opts->variations = (hb_variation_t *) calloc (font_opts->num_variations, sizeof (*font_opts->variations));
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if (!font_opts->variations)
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return false;
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/* now do the actual parsing */
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p = s;
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font_opts->num_variations = 0;
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while (p && *p) {
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char *end = strchr (p, ',');
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if (hb_variation_from_string (p, end ? end - p : -1, &font_opts->variations[font_opts->num_variations]))
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font_opts->num_variations++;
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p = end ? end + 1 : nullptr;
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}
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return true;
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}
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static gboolean
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parse_text (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error G_GNUC_UNUSED)
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{
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text_options_t *text_opts = (text_options_t *) data;
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if (text_opts->text)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Either --text or --unicodes can be provided but not both");
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return false;
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}
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text_opts->text_len = -1;
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text_opts->text = g_strdup (arg);
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return true;
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}
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static gboolean
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parse_unicodes (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error G_GNUC_UNUSED)
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{
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text_options_t *text_opts = (text_options_t *) data;
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if (text_opts->text)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Either --text or --unicodes can be provided but not both");
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return false;
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}
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GString *gs = g_string_new (nullptr);
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char *s = (char *) arg;
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char *p;
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while (s && *s)
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{
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while (*s && strchr ("<+>{},;&#\\xXuUnNiI\n\t\v\f\r ", *s))
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s++;
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if (!*s)
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break;
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errno = 0;
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hb_codepoint_t u = strtoul (s, &p, 16);
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if (errno || s == p)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
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"Failed parsing Unicode values at: '%s'", s);
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return false;
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}
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g_string_append_unichar (gs, u);
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s = p;
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}
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text_opts->text_len = gs->len;
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text_opts->text = g_string_free (gs, FALSE);
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return true;
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}
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void
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view_options_t::add_options (option_parser_t *parser)
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{
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GOptionEntry entries[] =
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{
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{"annotate", 0, 0, G_OPTION_ARG_NONE, &this->annotate, "Annotate output rendering", nullptr},
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{"background", 0, 0, G_OPTION_ARG_STRING, &this->back, "Set background color (default: " DEFAULT_BACK ")", "rrggbb/rrggbbaa"},
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{"foreground", 0, 0, G_OPTION_ARG_STRING, &this->fore, "Set foreground color (default: " DEFAULT_FORE ")", "rrggbb/rrggbbaa"},
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{"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &this->line_space, "Set space between lines (default: 0)", "units"},
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{"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin, "Margin around output (default: " G_STRINGIFY(DEFAULT_MARGIN) ")","one to four numbers"},
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{nullptr}
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};
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parser->add_group (entries,
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"view",
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"View options:",
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"Options for output rendering",
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this);
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}
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void
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shape_options_t::add_options (option_parser_t *parser)
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{
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GOptionEntry entries[] =
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{
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{"list-shapers", 0, G_OPTION_FLAG_NO_ARG,
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G_OPTION_ARG_CALLBACK, (gpointer) &list_shapers, "List available shapers and quit", nullptr},
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{"shaper", 0, G_OPTION_FLAG_HIDDEN,
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G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Hidden duplicate of --shapers", nullptr},
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{"shapers", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Set comma-separated list of shapers to try","list"},
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{"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction, "Set text direction (default: auto)", "ltr/rtl/ttb/btt"},
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{"language", 0, 0, G_OPTION_ARG_STRING, &this->language, "Set text language (default: $LANG)", "langstr"},
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{"script", 0, 0, G_OPTION_ARG_STRING, &this->script, "Set text script (default: auto)", "ISO-15924 tag"},
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{"bot", 0, 0, G_OPTION_ARG_NONE, &this->bot, "Treat text as beginning-of-paragraph", nullptr},
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{"eot", 0, 0, G_OPTION_ARG_NONE, &this->eot, "Treat text as end-of-paragraph", nullptr},
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{"preserve-default-ignorables",0, 0, G_OPTION_ARG_NONE, &this->preserve_default_ignorables, "Preserve Default-Ignorable characters", nullptr},
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{"remove-default-ignorables",0, 0, G_OPTION_ARG_NONE, &this->remove_default_ignorables, "Remove Default-Ignorable characters", nullptr},
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{"invisible-glyph", 0, 0, G_OPTION_ARG_INT, &this->invisible_glyph, "Glyph value to replace Default-Ignorables with", nullptr},
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{"utf8-clusters", 0, 0, G_OPTION_ARG_NONE, &this->utf8_clusters, "Use UTF8 byte indices, not char indices", nullptr},
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{"cluster-level", 0, 0, G_OPTION_ARG_INT, &this->cluster_level, "Cluster merging level (default: 0)", "0/1/2"},
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{"normalize-glyphs",0, 0, G_OPTION_ARG_NONE, &this->normalize_glyphs, "Rearrange glyph clusters in nominal order", nullptr},
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{"verify", 0, 0, G_OPTION_ARG_NONE, &this->verify, "Perform sanity checks on shaping results", nullptr},
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{"num-iterations", 'n', 0, G_OPTION_ARG_INT, &this->num_iterations, "Run shaper N times (default: 1)", "N"},
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{nullptr}
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};
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parser->add_group (entries,
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"shape",
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"Shape options:",
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"Options for the shaping process",
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|
this);
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const gchar *features_help = "Comma-separated list of font features\n"
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|
"\n"
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|
" Features can be enabled or disabled, either globally or limited to\n"
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|
" specific character ranges. The format for specifying feature settings\n"
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|
" follows. All valid CSS font-feature-settings values other than 'normal'\n"
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|
" and the global values are also accepted, though not documented below.\n"
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|
" CSS string escapes are not supported."
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|
"\n"
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" The range indices refer to the positions between Unicode characters,\n"
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|
" unless the --utf8-clusters is provided, in which case range indices\n"
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|
" refer to UTF-8 byte indices. The position before the first character\n"
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|
" is always 0.\n"
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|
"\n"
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|
" The format is Python-esque. Here is how it all works:\n"
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"\n"
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" Syntax: Value: Start: End:\n"
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"\n"
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" Setting value:\n"
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" \"kern\" 1 0 ∞ # Turn feature on\n"
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" \"+kern\" 1 0 ∞ # Turn feature on\n"
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" \"-kern\" 0 0 ∞ # Turn feature off\n"
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" \"kern=0\" 0 0 ∞ # Turn feature off\n"
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" \"kern=1\" 1 0 ∞ # Turn feature on\n"
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" \"aalt=2\" 2 0 ∞ # Choose 2nd alternate\n"
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"\n"
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" Setting index:\n"
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" \"kern[]\" 1 0 ∞ # Turn feature on\n"
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" \"kern[:]\" 1 0 ∞ # Turn feature on\n"
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" \"kern[5:]\" 1 5 ∞ # Turn feature on, partial\n"
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" \"kern[:5]\" 1 0 5 # Turn feature on, partial\n"
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" \"kern[3:5]\" 1 3 5 # Turn feature on, range\n"
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" \"kern[3]\" 1 3 3+1 # Turn feature on, single char\n"
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"\n"
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" Mixing it all:\n"
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"\n"
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" \"aalt[3:5]=2\" 2 3 5 # Turn 2nd alternate on for range";
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|
|
GOptionEntry entries2[] =
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{
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{"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features, features_help, "list"},
|
|
{nullptr}
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};
|
|
parser->add_group (entries2,
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"features",
|
|
"Features options:",
|
|
"Options for font features used",
|
|
this);
|
|
}
|
|
|
|
static gboolean
|
|
parse_font_size (const char *name G_GNUC_UNUSED,
|
|
const char *arg,
|
|
gpointer data,
|
|
GError **error G_GNUC_UNUSED)
|
|
{
|
|
font_options_t *font_opts = (font_options_t *) data;
|
|
if (0 == strcmp (arg, "upem"))
|
|
{
|
|
font_opts->font_size_y = font_opts->font_size_x = FONT_SIZE_UPEM;
|
|
return true;
|
|
}
|
|
switch (sscanf (arg, "%lf%*[ ,]%lf", &font_opts->font_size_x, &font_opts->font_size_y)) {
|
|
case 1: font_opts->font_size_y = font_opts->font_size_x; HB_FALLTHROUGH;
|
|
case 2: return true;
|
|
default:
|
|
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
|
|
"%s argument should be one or two space-separated numbers",
|
|
name);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
parse_font_ppem (const char *name G_GNUC_UNUSED,
|
|
const char *arg,
|
|
gpointer data,
|
|
GError **error G_GNUC_UNUSED)
|
|
{
|
|
font_options_t *font_opts = (font_options_t *) data;
|
|
switch (sscanf (arg, "%d%*[ ,]%d", &font_opts->x_ppem, &font_opts->y_ppem)) {
|
|
case 1: font_opts->y_ppem = font_opts->x_ppem; HB_FALLTHROUGH;
|
|
case 2: return true;
|
|
default:
|
|
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
|
|
"%s argument should be one or two space-separated numbers",
|
|
name);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void
|
|
font_options_t::add_options (option_parser_t *parser)
|
|
{
|
|
char *text = nullptr;
|
|
|
|
{
|
|
static_assert ((ARRAY_LENGTH_CONST (supported_font_funcs) > 0),
|
|
"No supported font-funcs found.");
|
|
GString *s = g_string_new (nullptr);
|
|
g_string_printf (s, "Set font functions implementation to use (default: %s)\n\n Supported font function implementations are: %s",
|
|
supported_font_funcs[0].name,
|
|
supported_font_funcs[0].name);
|
|
for (unsigned int i = 1; i < ARRAY_LENGTH (supported_font_funcs); i++)
|
|
{
|
|
g_string_append_c (s, '/');
|
|
g_string_append (s, supported_font_funcs[i].name);
|
|
}
|
|
text = g_string_free (s, FALSE);
|
|
parser->free_later (text);
|
|
}
|
|
|
|
char *font_size_text;
|
|
if (default_font_size == FONT_SIZE_UPEM)
|
|
font_size_text = (char *) "Font size (default: upem)";
|
|
else
|
|
{
|
|
font_size_text = g_strdup_printf ("Font size (default: %d)", default_font_size);
|
|
parser->free_later (font_size_text);
|
|
}
|
|
|
|
GOptionEntry entries[] =
|
|
{
|
|
{"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"},
|
|
{"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"},
|
|
{"font-size", 0, default_font_size ? 0 : G_OPTION_FLAG_HIDDEN,
|
|
G_OPTION_ARG_CALLBACK, (gpointer) &parse_font_size, font_size_text, "1/2 integers or 'upem'"},
|
|
{"font-ppem", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_font_ppem, "Set x,y pixels per EM (default: 0; disabled)", "1/2 integers"},
|
|
{"font-ptem", 0, 0, G_OPTION_ARG_DOUBLE, &this->ptem, "Set font point-size (default: 0; disabled)", "point-size"},
|
|
{"font-funcs", 0, 0, G_OPTION_ARG_STRING, &this->font_funcs, text, "impl"},
|
|
{"ft-load-flags", 0, 0, G_OPTION_ARG_INT, &this->ft_load_flags, "Set FreeType load-flags (default: 2)", "integer"},
|
|
{nullptr}
|
|
};
|
|
parser->add_group (entries,
|
|
"font",
|
|
"Font options:",
|
|
"Options for the font",
|
|
this);
|
|
|
|
const gchar *variations_help = "Comma-separated list of font variations\n"
|
|
"\n"
|
|
" Variations are set globally. The format for specifying variation settings\n"
|
|
" follows. All valid CSS font-variation-settings values other than 'normal'\n"
|
|
" and 'inherited' are also accepted, though, not documented below.\n"
|
|
"\n"
|
|
" The format is a tag, optionally followed by an equals sign, followed by a\n"
|
|
" number. For example:\n"
|
|
"\n"
|
|
" \"wght=500\"\n"
|
|
" \"slnt=-7.5\"\n";
|
|
|
|
GOptionEntry entries2[] =
|
|
{
|
|
{"variations", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_variations, variations_help, "list"},
|
|
{nullptr}
|
|
};
|
|
parser->add_group (entries2,
|
|
"variations",
|
|
"Variations options:",
|
|
"Options for font variations used",
|
|
this);
|
|
}
|
|
|
|
void
|
|
text_options_t::add_options (option_parser_t *parser)
|
|
{
|
|
GOptionEntry entries[] =
|
|
{
|
|
{"text", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_text, "Set input text", "string"},
|
|
{"text-file", 0, 0, G_OPTION_ARG_STRING, &this->text_file, "Set input text file-name\n\n If no text is provided, standard input is used for input.\n", "filename"},
|
|
{"unicodes", 'u', 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_unicodes, "Set input Unicode codepoints", "list of hex numbers"},
|
|
{"text-before", 0, 0, G_OPTION_ARG_STRING, &this->text_before, "Set text context before each line", "string"},
|
|
{"text-after", 0, 0, G_OPTION_ARG_STRING, &this->text_after, "Set text context after each line", "string"},
|
|
{nullptr}
|
|
};
|
|
parser->add_group (entries,
|
|
"text",
|
|
"Text options:",
|
|
"Options for the input text",
|
|
this);
|
|
}
|
|
|
|
void
|
|
output_options_t::add_options (option_parser_t *parser)
|
|
{
|
|
const char *text;
|
|
|
|
if (nullptr == supported_formats)
|
|
text = "Set output serialization format";
|
|
else
|
|
{
|
|
char *items = g_strjoinv ("/", const_cast<char **> (supported_formats));
|
|
text = g_strdup_printf ("Set output format\n\n Supported output formats are: %s", items);
|
|
g_free (items);
|
|
parser->free_later ((char *) text);
|
|
}
|
|
|
|
GOptionEntry entries[] =
|
|
{
|
|
{"output-file", 'o', 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"},
|
|
{"output-format", 'O', 0, G_OPTION_ARG_STRING, &this->output_format, text, "format"},
|
|
{nullptr}
|
|
};
|
|
parser->add_group (entries,
|
|
"output",
|
|
"Output destination & format options:",
|
|
"Options for the destination & form of the output",
|
|
this);
|
|
}
|
|
|
|
|
|
|
|
hb_font_t *
|
|
font_options_t::get_font () const
|
|
{
|
|
if (font)
|
|
return font;
|
|
|
|
/* Create the blob */
|
|
if (!font_file)
|
|
fail (true, "No font file set");
|
|
|
|
const char *font_path = font_file;
|
|
|
|
if (0 == strcmp (font_path, "-"))
|
|
{
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
setmode (fileno (stdin), O_BINARY);
|
|
font_path = "STDIN";
|
|
#else
|
|
font_path = "/dev/stdin";
|
|
#endif
|
|
}
|
|
|
|
blob = hb_blob_create_from_file (font_path);
|
|
|
|
if (blob == hb_blob_get_empty ())
|
|
fail (false, "Couldn't read or find %s, or it was empty.", font_path);
|
|
|
|
/* Create the face */
|
|
hb_face_t *face = hb_face_create (blob, face_index);
|
|
hb_blob_destroy (blob);
|
|
|
|
|
|
font = hb_font_create (face);
|
|
|
|
if (font_size_x == FONT_SIZE_UPEM)
|
|
font_size_x = hb_face_get_upem (face);
|
|
if (font_size_y == FONT_SIZE_UPEM)
|
|
font_size_y = hb_face_get_upem (face);
|
|
|
|
hb_font_set_ppem (font, x_ppem, y_ppem);
|
|
hb_font_set_ptem (font, ptem);
|
|
|
|
int scale_x = (int) scalbnf (font_size_x, subpixel_bits);
|
|
int scale_y = (int) scalbnf (font_size_y, subpixel_bits);
|
|
hb_font_set_scale (font, scale_x, scale_y);
|
|
hb_face_destroy (face);
|
|
|
|
hb_font_set_variations (font, variations, num_variations);
|
|
|
|
void (*set_font_funcs) (hb_font_t *) = nullptr;
|
|
if (!font_funcs)
|
|
{
|
|
set_font_funcs = supported_font_funcs[0].func;
|
|
}
|
|
else
|
|
{
|
|
for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++)
|
|
if (0 == g_ascii_strcasecmp (font_funcs, supported_font_funcs[i].name))
|
|
{
|
|
set_font_funcs = supported_font_funcs[i].func;
|
|
break;
|
|
}
|
|
if (!set_font_funcs)
|
|
{
|
|
GString *s = g_string_new (nullptr);
|
|
for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++)
|
|
{
|
|
if (i)
|
|
g_string_append_c (s, '/');
|
|
g_string_append (s, supported_font_funcs[i].name);
|
|
}
|
|
char *p = g_string_free (s, FALSE);
|
|
fail (false, "Unknown font function implementation `%s'; supported values are: %s; default is %s",
|
|
font_funcs,
|
|
p,
|
|
supported_font_funcs[0].name);
|
|
//free (p);
|
|
}
|
|
}
|
|
set_font_funcs (font);
|
|
#ifdef HAVE_FREETYPE
|
|
hb_ft_font_set_load_flags (font, ft_load_flags);
|
|
#endif
|
|
|
|
return font;
|
|
}
|
|
|
|
|
|
const char *
|
|
text_options_t::get_line (unsigned int *len)
|
|
{
|
|
if (text) {
|
|
if (!line)
|
|
{
|
|
line = text;
|
|
line_len = text_len;
|
|
}
|
|
if (line_len == (unsigned int) -1)
|
|
line_len = strlen (line);
|
|
|
|
if (!line_len) {
|
|
*len = 0;
|
|
return nullptr;
|
|
}
|
|
|
|
const char *ret = line;
|
|
const char *p = (const char *) memchr (line, '\n', line_len);
|
|
unsigned int ret_len;
|
|
if (!p) {
|
|
ret_len = line_len;
|
|
line += ret_len;
|
|
line_len = 0;
|
|
} else {
|
|
ret_len = p - ret;
|
|
line += ret_len + 1;
|
|
line_len -= ret_len + 1;
|
|
}
|
|
|
|
*len = ret_len;
|
|
return ret;
|
|
}
|
|
|
|
if (!fp) {
|
|
if (!text_file)
|
|
fail (true, "At least one of text or text-file must be set");
|
|
|
|
if (0 != strcmp (text_file, "-"))
|
|
fp = fopen (text_file, "r");
|
|
else
|
|
fp = stdin;
|
|
|
|
if (!fp)
|
|
fail (false, "Failed opening text file `%s': %s",
|
|
text_file, strerror (errno));
|
|
|
|
gs = g_string_new (nullptr);
|
|
}
|
|
|
|
g_string_set_size (gs, 0);
|
|
char buf[BUFSIZ];
|
|
while (fgets (buf, sizeof (buf), fp)) {
|
|
unsigned int bytes = strlen (buf);
|
|
if (bytes && buf[bytes - 1] == '\n') {
|
|
bytes--;
|
|
g_string_append_len (gs, buf, bytes);
|
|
break;
|
|
}
|
|
g_string_append_len (gs, buf, bytes);
|
|
}
|
|
if (ferror (fp))
|
|
fail (false, "Failed reading text: %s",
|
|
strerror (errno));
|
|
*len = gs->len;
|
|
return !*len && feof (fp) ? nullptr : gs->str;
|
|
}
|
|
|
|
|
|
FILE *
|
|
output_options_t::get_file_handle ()
|
|
{
|
|
if (fp)
|
|
return fp;
|
|
|
|
if (output_file)
|
|
fp = fopen (output_file, "wb");
|
|
else {
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
setmode (fileno (stdout), O_BINARY);
|
|
#endif
|
|
fp = stdout;
|
|
}
|
|
if (!fp)
|
|
fail (false, "Cannot open output file `%s': %s",
|
|
g_filename_display_name (output_file), strerror (errno));
|
|
|
|
return fp;
|
|
}
|
|
|
|
static gboolean
|
|
parse_verbose (const char *name G_GNUC_UNUSED,
|
|
const char *arg G_GNUC_UNUSED,
|
|
gpointer data G_GNUC_UNUSED,
|
|
GError **error G_GNUC_UNUSED)
|
|
{
|
|
format_options_t *format_opts = (format_options_t *) data;
|
|
format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true;
|
|
return true;
|
|
}
|
|
|
|
static gboolean
|
|
parse_ned (const char *name G_GNUC_UNUSED,
|
|
const char *arg G_GNUC_UNUSED,
|
|
gpointer data G_GNUC_UNUSED,
|
|
GError **error G_GNUC_UNUSED)
|
|
{
|
|
format_options_t *format_opts = (format_options_t *) data;
|
|
format_opts->show_clusters = format_opts->show_advances = false;
|
|
return true;
|
|
}
|
|
|
|
void
|
|
format_options_t::add_options (option_parser_t *parser)
|
|
{
|
|
GOptionEntry entries[] =
|
|
{
|
|
{"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Prefix each line of output with its corresponding input text", nullptr},
|
|
{"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Prefix each line of output with its corresponding input codepoint(s)", nullptr},
|
|
{"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Prefix each line of output with its corresponding input line number", nullptr},
|
|
{"verbose", 'v', G_OPTION_FLAG_NO_ARG,
|
|
G_OPTION_ARG_CALLBACK, (gpointer) &parse_verbose, "Prefix each line of output with all of the above", nullptr},
|
|
{"no-glyph-names", 0, G_OPTION_FLAG_REVERSE,
|
|
G_OPTION_ARG_NONE, &this->show_glyph_names, "Output glyph indices instead of names", nullptr},
|
|
{"no-positions", 0, G_OPTION_FLAG_REVERSE,
|
|
G_OPTION_ARG_NONE, &this->show_positions, "Do not output glyph positions", nullptr},
|
|
{"no-advances", 0, G_OPTION_FLAG_REVERSE,
|
|
G_OPTION_ARG_NONE, &this->show_advances, "Do not output glyph advances", nullptr},
|
|
{"no-clusters", 0, G_OPTION_FLAG_REVERSE,
|
|
G_OPTION_ARG_NONE, &this->show_clusters, "Do not output cluster indices", nullptr},
|
|
{"show-extents", 0, 0, G_OPTION_ARG_NONE, &this->show_extents, "Output glyph extents", nullptr},
|
|
{"show-flags", 0, 0, G_OPTION_ARG_NONE, &this->show_flags, "Output glyph flags", nullptr},
|
|
{"ned", 'v', G_OPTION_FLAG_NO_ARG,
|
|
G_OPTION_ARG_CALLBACK, (gpointer) &parse_ned, "No Extra Data; Do not output clusters or advances", nullptr},
|
|
{"trace", 'V', 0, G_OPTION_ARG_NONE, &this->trace, "Output interim shaping results", nullptr},
|
|
{nullptr}
|
|
};
|
|
parser->add_group (entries,
|
|
"output-syntax",
|
|
"Output syntax:\n"
|
|
" text: [<glyph name or index>=<glyph cluster index within input>@<horizontal displacement>,<vertical displacement>+<horizontal advance>,<vertical advance>|...]\n"
|
|
" json: [{\"g\": <glyph name or index>, \"ax\": <horizontal advance>, \"ay\": <vertical advance>, \"dx\": <horizontal displacement>, \"dy\": <vertical displacement>, \"cl\": <glyph cluster index within input>}, ...]\n"
|
|
"\nOutput syntax options:",
|
|
"Options for the syntax of the output",
|
|
this);
|
|
}
|
|
|
|
void
|
|
format_options_t::serialize_unicode (hb_buffer_t *buffer,
|
|
GString *gs)
|
|
{
|
|
unsigned int num_glyphs = hb_buffer_get_length (buffer);
|
|
hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr);
|
|
|
|
g_string_append_c (gs, '<');
|
|
for (unsigned int i = 0; i < num_glyphs; i++)
|
|
{
|
|
if (i)
|
|
g_string_append_c (gs, ',');
|
|
g_string_append_printf (gs, "U+%04X", info->codepoint);
|
|
info++;
|
|
}
|
|
g_string_append_c (gs, '>');
|
|
}
|
|
|
|
void
|
|
format_options_t::serialize_glyphs (hb_buffer_t *buffer,
|
|
hb_font_t *font,
|
|
hb_buffer_serialize_format_t output_format,
|
|
hb_buffer_serialize_flags_t flags,
|
|
GString *gs)
|
|
{
|
|
g_string_append_c (gs, '[');
|
|
unsigned int num_glyphs = hb_buffer_get_length (buffer);
|
|
unsigned int start = 0;
|
|
|
|
while (start < num_glyphs)
|
|
{
|
|
char buf[1024];
|
|
unsigned int consumed;
|
|
start += hb_buffer_serialize_glyphs (buffer, start, num_glyphs,
|
|
buf, sizeof (buf), &consumed,
|
|
font, output_format, flags);
|
|
if (!consumed)
|
|
break;
|
|
g_string_append (gs, buf);
|
|
}
|
|
g_string_append_c (gs, ']');
|
|
}
|
|
void
|
|
format_options_t::serialize_line_no (unsigned int line_no,
|
|
GString *gs)
|
|
{
|
|
if (show_line_num)
|
|
g_string_append_printf (gs, "%d: ", line_no);
|
|
}
|
|
void
|
|
format_options_t::serialize_buffer_of_text (hb_buffer_t *buffer,
|
|
unsigned int line_no,
|
|
const char *text,
|
|
unsigned int text_len,
|
|
hb_font_t *font,
|
|
GString *gs)
|
|
{
|
|
if (show_text)
|
|
{
|
|
serialize_line_no (line_no, gs);
|
|
g_string_append_c (gs, '(');
|
|
g_string_append_len (gs, text, text_len);
|
|
g_string_append_c (gs, ')');
|
|
g_string_append_c (gs, '\n');
|
|
}
|
|
|
|
if (show_unicode)
|
|
{
|
|
serialize_line_no (line_no, gs);
|
|
serialize_unicode (buffer, gs);
|
|
g_string_append_c (gs, '\n');
|
|
}
|
|
}
|
|
void
|
|
format_options_t::serialize_message (unsigned int line_no,
|
|
const char *type,
|
|
const char *msg,
|
|
GString *gs)
|
|
{
|
|
serialize_line_no (line_no, gs);
|
|
g_string_append_printf (gs, "%s: %s", type, msg);
|
|
g_string_append_c (gs, '\n');
|
|
}
|
|
void
|
|
format_options_t::serialize_buffer_of_glyphs (hb_buffer_t *buffer,
|
|
unsigned int line_no,
|
|
const char *text,
|
|
unsigned int text_len,
|
|
hb_font_t *font,
|
|
hb_buffer_serialize_format_t output_format,
|
|
hb_buffer_serialize_flags_t format_flags,
|
|
GString *gs)
|
|
{
|
|
serialize_line_no (line_no, gs);
|
|
serialize_glyphs (buffer, font, output_format, format_flags, gs);
|
|
g_string_append_c (gs, '\n');
|
|
}
|
|
|
|
static gboolean
|
|
parse_nameids (const char *name G_GNUC_UNUSED,
|
|
const char *arg,
|
|
gpointer data,
|
|
GError **error G_GNUC_UNUSED)
|
|
{
|
|
subset_options_t *subset_opts = (subset_options_t *) data;
|
|
|
|
hb_set_t *name_ids = hb_set_create ();
|
|
char *s = (char *) arg;
|
|
char *p;
|
|
|
|
while (s && *s)
|
|
{
|
|
while (*s && strchr ("<+>{},;&#\\xXuUnNiI\n\t\v\f\r ", *s))
|
|
s++;
|
|
if (!*s)
|
|
break;
|
|
|
|
errno = 0;
|
|
hb_codepoint_t u = strtoul (s, &p, 10);
|
|
if (errno || s == p)
|
|
{
|
|
hb_set_destroy (name_ids);
|
|
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
|
|
"Failed parsing nameID values at: '%s'", s);
|
|
return false;
|
|
}
|
|
|
|
hb_set_add (name_ids, u);
|
|
|
|
s = p;
|
|
}
|
|
|
|
hb_set_t *prev = subset_opts->name_ids;
|
|
subset_opts->name_ids = hb_set_reference (name_ids);
|
|
hb_set_destroy (prev);
|
|
hb_set_destroy (name_ids);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void
|
|
subset_options_t::add_options (option_parser_t *parser)
|
|
{
|
|
GOptionEntry entries[] =
|
|
{
|
|
{"layout", 0, 0, G_OPTION_ARG_NONE, &this->keep_layout, "Keep OpenType Layout tables", nullptr},
|
|
{"no-hinting", 0, 0, G_OPTION_ARG_NONE, &this->drop_hints, "Whether to drop hints", nullptr},
|
|
{"retain-gids", 0, 0, G_OPTION_ARG_NONE, &this->retain_gids, "If set don't renumber glyph ids in the subset.", nullptr},
|
|
{"desubroutinize", 0, 0, G_OPTION_ARG_NONE, &this->desubroutinize, "Remove CFF/CFF2 use of subroutines", nullptr},
|
|
{"name-IDs", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_nameids, "Subset specified nameids", "list of int numbers"},
|
|
|
|
{nullptr}
|
|
};
|
|
parser->add_group (entries,
|
|
"subset",
|
|
"Subset options:",
|
|
"Options subsetting",
|
|
this);
|
|
}
|
|
|