[util] Port hb-view to GOption
This commit is contained in:
Behdad Esfahbod
parent
511a136f0c
commit
8df90c8118
267
util/hb-view.cc
267
util/hb-view.cc
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@ -38,6 +38,7 @@
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#include <locale.h>
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#include <glib.h>
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#include <glib/gprintf.h>
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#include <cairo-ft.h>
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#include <hb-ft.h>
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@ -45,13 +46,13 @@
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/* Controlled by cmd-line options */
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static int margin_t = 10;
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static int margin_b = 10;
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static int margin_l = 10;
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static int margin_r = 10;
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static int line_space = 0;
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struct margin_t {
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double t, r, b, l;
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};
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static margin_t opt_margin = {18, 18, 18, 18};
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static double line_space = 0;
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static int face_index = 0;
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static double font_size = 18;
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static double font_size = 36;
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static const char *fore = "#000000";
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static const char *back = "#ffffff";
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static const char *text = NULL;
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@ -60,11 +61,12 @@ static const char *out_file = "/dev/stdout";
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static const char *direction = NULL;
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static const char *script = NULL;
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static const char *language = NULL;
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static hb_feature_t *features = NULL;
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static unsigned int num_features;
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static hb_bool_t annotate = FALSE;
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static hb_bool_t debug = FALSE;
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static hb_feature_t *features = NULL;
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static unsigned int num_features;
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/* Ugh, global vars. Ugly, but does the job */
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static int width = 0;
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static int height = 0;
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@ -81,110 +83,146 @@ usage (FILE *f, int status)
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exit (status);
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}
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G_GNUC_NORETURN static void
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version (void)
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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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printf ("hb-view (harfbuzz) %s\n", HB_VERSION_STRING);
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exit (0);
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g_printf("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
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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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static void parse_features (char *s);
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static void
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parse_opts (int argc, char **argv)
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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 G_GNUC_UNUSED,
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GError **error G_GNUC_UNUSED);
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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 G_GNUC_UNUSED,
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GError **error G_GNUC_UNUSED)
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{
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argv[0] = (char *) "hb-view";
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while (1)
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{
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int option_index = 0, c;
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static const struct option long_options[] = {
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{"annotate", 0, &annotate, TRUE},
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{"background", 1, 0, 'B'},
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{"debug", 0, &debug, TRUE},
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{"direction", 1, 0, 'd'},
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{"features", 1, 0, 'f'},
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{"font-size", 1, 0, 's'},
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{"face-index", 1, 0, 'i'},
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{"foreground", 1, 0, 'F'},
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{"help", 0, 0, 'h'},
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{"language", 1, 0, 'L'},
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{"line-space", 1, 0, 'l'},
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{"margin", 1, 0, 'm'},
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{"output", 1, 0, 'o'},
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{"script", 1, 0, 'S'},
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{"version", 0, 0, 'v'},
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{0, 0, 0, 0}
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};
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c = getopt_long (argc, argv, "", long_options, &option_index);
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if (c == -1)
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break;
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switch (c)
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{
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case 0:
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break;
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case 'h':
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usage (stdout, 0);
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break;
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case 'v':
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version ();
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break;
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case 'i':
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face_index = atoi (optarg);
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break;
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case 'l':
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line_space = atoi (optarg);
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break;
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case 'm':
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switch (sscanf (optarg, "%d %d %d %d", &margin_t, &margin_r, &margin_b, &margin_l)) {
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default: break;
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case 1: margin_r = margin_t;
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case 2: margin_b = margin_t;
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case 3: margin_l = margin_r;
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}
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break;
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case 's':
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font_size = strtod (optarg, NULL);
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break;
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case 'f':
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parse_features (optarg);
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break;
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case 'F':
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fore = optarg;
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break;
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case 'B':
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back = optarg;
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break;
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case 't':
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text = optarg;
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break;
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case 'd':
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direction = optarg;
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break;
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case 'S':
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script = optarg;
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break;
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case 'L':
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language = optarg;
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break;
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case 'o':
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out_file = optarg;
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break;
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case '?':
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usage (stdout, 1);
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break;
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default:
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break;
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}
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}
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if (optind + 2 != argc)
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usage (stderr, 1);
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font_file = argv[optind++];
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text = argv[optind++];
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switch (sscanf (arg, "%f %f %f %f", &opt_margin.t, &opt_margin.r, &opt_margin.b, &opt_margin.l)) {
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case 1: opt_margin.r = opt_margin.t;
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case 2: opt_margin.b = opt_margin.t;
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case 3: opt_margin.l = opt_margin.r;
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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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void
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fail (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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g_printerr ("%s: %s\n", g_get_prgname (), msg);
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exit (1);
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}
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static gchar *
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shapers_to_string (void)
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{
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GString *shapers = g_string_new (NULL);
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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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void
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parse_options (int argc, char *argv[])
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{
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gchar *shapers_options = shapers_to_string ();
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GOptionEntry entries[] =
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{
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{"version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &show_version,
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"Show version numbers", NULL},
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{"debug", 0, 0, G_OPTION_ARG_NONE, &debug,
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"Free all resources before exit", NULL},
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{"output", 0, 0, G_OPTION_ARG_STRING, &out_file,
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"Set output file name", "filename"},
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{"annotate", 0, 0, G_OPTION_ARG_NONE, &annotate,
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"Annotate output rendering", NULL},
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{"background", 0, 0, G_OPTION_ARG_STRING, &back,
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"Set background color", "red/#rrggbb/#rrggbbaa"},
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{"foreground", 0, 0, G_OPTION_ARG_STRING, &fore,
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"Set foreground color", "red/#rrggbb/#rrggbbaa"},
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{"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &font_size,
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"Set space between lines (default: 0)", "units"},
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{"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin,
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"Margin around output", "one to four numbers"},
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{"direction", 0, 0, G_OPTION_ARG_STRING, &direction,
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"Set text direction (default: auto)", "ltr/rtl/ttb/btt"},
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{"language", 0, 0, G_OPTION_ARG_STRING, &language,
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"Set text language (default: $LANG)", "langstr"},
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{"script", 0, 0, G_OPTION_ARG_STRING, &script,
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"Set text script (default: auto)", "ISO-15924 tag"},
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{"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features,
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"Font features to apply to text", "TODO"},
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{"face-index", 0, 0, G_OPTION_ARG_INT, &face_index,
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"Face index (default: 0)", "index"},
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{"font-size", 0, 0, G_OPTION_ARG_DOUBLE, &font_size,
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"Font size", "size"},
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{NULL}
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};
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GError *error = NULL;
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GError *parse_error = NULL;
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GOptionContext *context;
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size_t len;
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context = g_option_context_new ("- FONT-FILE TEXT");
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g_option_context_add_main_entries (context, entries, NULL);
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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 != NULL)
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fail ("%s", parse_error->message);
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else
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fail ("Option parse error");
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exit(1);
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}
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g_option_context_free(context);
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g_free(shapers_options);
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if (argc != 3) {
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g_printerr ("Usage: %s [OPTION...] FONT-FILE TEXT\n", g_get_prgname ());
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exit (1);
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}
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font_file = argv[1];
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text = g_locale_to_utf8 (argv[2], -1, NULL, NULL, &error);
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}
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static void
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parse_space (char **pp)
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{
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@ -309,15 +347,20 @@ skip_one_feature (char **pp)
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*pp = *pp + strlen (*pp);
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}
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static void parse_features (char *s)
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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 G_GNUC_UNUSED,
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GError **error G_GNUC_UNUSED)
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{
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char *s = (char *) arg;
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char *p;
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num_features = 0;
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features = NULL;
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if (!*s)
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return;
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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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@ -339,6 +382,8 @@ static void parse_features (char *s)
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else
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skip_one_feature (&p);
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}
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return TRUE;
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}
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@ -465,8 +510,8 @@ draw (void)
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height = 0;
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width = 0;
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x = margin_l;
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y = margin_t;
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x = opt_margin.l;
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y = opt_margin.t;
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do {
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cairo_text_extents_t extents;
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@ -513,8 +558,8 @@ draw (void)
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p = end + 1;
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} while (*end);
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height = y + margin_b;
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width += margin_l + margin_r;
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height = y + opt_margin.b;
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width += opt_margin.l + opt_margin.r;
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cairo_destroy (cr);
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}
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@ -530,7 +575,7 @@ main (int argc, char **argv)
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setlocale (LC_ALL, "");
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parse_opts (argc, argv);
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parse_options (argc, argv);
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FT_Init_FreeType (&ft_library);
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if (FT_New_Face (ft_library, font_file, face_index, &ft_face)) {
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