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[util] Port hb-view to GOption

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pull/1/head
Behdad Esfahbod 14 years ago
parent 511a136f0c
commit 8df90c8118
1 changed files with 156 additions and 111 deletions
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  1. 267
      util/hb-view.cc

267
util/hb-view.cc
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@ -38,6 +38,7 @@
#include <locale.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <cairo-ft.h>
#include <hb-ft.h>
@ -45,13 +46,13 @@
/* Controlled by cmd-line options */
static int margin_t = 10;
static int margin_b = 10;
static int margin_l = 10;
static int margin_r = 10;
static int line_space = 0;
struct margin_t {
double t, r, b, l;
};
static margin_t opt_margin = {18, 18, 18, 18};
static double line_space = 0;
static int face_index = 0;
static double font_size = 18;
static double font_size = 36;
static const char *fore = "#000000";
static const char *back = "#ffffff";
static const char *text = NULL;
@ -60,11 +61,12 @@ static const char *out_file = "/dev/stdout";
static const char *direction = NULL;
static const char *script = NULL;
static const char *language = NULL;
static hb_feature_t *features = NULL;
static unsigned int num_features;
static hb_bool_t annotate = FALSE;
static hb_bool_t debug = FALSE;
static hb_feature_t *features = NULL;
static unsigned int num_features;
/* Ugh, global vars. Ugly, but does the job */
static int width = 0;
static int height = 0;
@ -81,110 +83,146 @@ usage (FILE *f, int status)
exit (status);
}
G_GNUC_NORETURN static void
version (void)
static G_GNUC_NORETURN gboolean
show_version (const char *name G_GNUC_UNUSED,
const char *arg G_GNUC_UNUSED,
gpointer data G_GNUC_UNUSED,
GError **error G_GNUC_UNUSED)
{
printf ("hb-view (harfbuzz) %s\n", HB_VERSION_STRING);
exit (0);
g_printf("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
if (strcmp (HB_VERSION_STRING, hb_version_string ()))
g_printf("Linked HarfBuzz library has a different version: %s\n", hb_version_string ());
exit(0);
}
static void parse_features (char *s);
static void
parse_opts (int argc, char **argv)
static gboolean
parse_features (const char *name G_GNUC_UNUSED,
const char *arg,
gpointer data G_GNUC_UNUSED,
GError **error G_GNUC_UNUSED);
static gboolean
parse_margin (const char *name G_GNUC_UNUSED,
const char *arg,
gpointer data G_GNUC_UNUSED,
GError **error G_GNUC_UNUSED)
{
argv[0] = (char *) "hb-view";
while (1)
{
int option_index = 0, c;
static const struct option long_options[] = {
{"annotate", 0, &annotate, TRUE},
{"background", 1, 0, 'B'},
{"debug", 0, &debug, TRUE},
{"direction", 1, 0, 'd'},
{"features", 1, 0, 'f'},
{"font-size", 1, 0, 's'},
{"face-index", 1, 0, 'i'},
{"foreground", 1, 0, 'F'},
{"help", 0, 0, 'h'},
{"language", 1, 0, 'L'},
{"line-space", 1, 0, 'l'},
{"margin", 1, 0, 'm'},
{"output", 1, 0, 'o'},
{"script", 1, 0, 'S'},
{"version", 0, 0, 'v'},
{0, 0, 0, 0}
};
c = getopt_long (argc, argv, "", long_options, &option_index);
if (c == -1)
break;
switch (c)
{
case 0:
break;
case 'h':
usage (stdout, 0);
break;
case 'v':
version ();
break;
case 'i':
face_index = atoi (optarg);
break;
case 'l':
line_space = atoi (optarg);
break;
case 'm':
switch (sscanf (optarg, "%d %d %d %d", &margin_t, &margin_r, &margin_b, &margin_l)) {
default: break;
case 1: margin_r = margin_t;
case 2: margin_b = margin_t;
case 3: margin_l = margin_r;
}
break;
case 's':
font_size = strtod (optarg, NULL);
break;
case 'f':
parse_features (optarg);
break;
case 'F':
fore = optarg;
break;
case 'B':
back = optarg;
break;
case 't':
text = optarg;
break;
case 'd':
direction = optarg;
break;
case 'S':
script = optarg;
break;
case 'L':
language = optarg;
break;
case 'o':
out_file = optarg;
break;
case '?':
usage (stdout, 1);
break;
default:
break;
}
}
if (optind + 2 != argc)
usage (stderr, 1);
font_file = argv[optind++];
text = argv[optind++];
switch (sscanf (arg, "%f %f %f %f", &opt_margin.t, &opt_margin.r, &opt_margin.b, &opt_margin.l)) {
case 1: opt_margin.r = opt_margin.t;
case 2: opt_margin.b = opt_margin.t;
case 3: opt_margin.l = opt_margin.r;
case 4: return TRUE;
default:
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
"%s argument should be one to four space-separated numbers",
name);
return FALSE;
}
}
void
fail (const char *format, ...)
{
const char *msg;
va_list vap;
va_start (vap, format);
msg = g_strdup_vprintf (format, vap);
g_printerr ("%s: %s\n", g_get_prgname (), msg);
exit (1);
}
static gchar *
shapers_to_string (void)
{
GString *shapers = g_string_new (NULL);
const char **shaper_list = hb_shape_list_shapers ();
for (; *shaper_list; shaper_list++) {
g_string_append (shapers, *shaper_list);
g_string_append_c (shapers, ',');
}
g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1));
return g_string_free(shapers, FALSE);
}
void
parse_options (int argc, char *argv[])
{
gchar *shapers_options = shapers_to_string ();
GOptionEntry entries[] =
{
{"version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, (gpointer) &show_version,
"Show version numbers", NULL},
{"debug", 0, 0, G_OPTION_ARG_NONE, &debug,
"Free all resources before exit", NULL},
{"output", 0, 0, G_OPTION_ARG_STRING, &out_file,
"Set output file name", "filename"},
{"annotate", 0, 0, G_OPTION_ARG_NONE, &annotate,
"Annotate output rendering", NULL},
{"background", 0, 0, G_OPTION_ARG_STRING, &back,
"Set background color", "red/#rrggbb/#rrggbbaa"},
{"foreground", 0, 0, G_OPTION_ARG_STRING, &fore,
"Set foreground color", "red/#rrggbb/#rrggbbaa"},
{"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &font_size,
"Set space between lines (default: 0)", "units"},
{"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin,
"Margin around output", "one to four numbers"},
{"direction", 0, 0, G_OPTION_ARG_STRING, &direction,
"Set text direction (default: auto)", "ltr/rtl/ttb/btt"},
{"language", 0, 0, G_OPTION_ARG_STRING, &language,
"Set text language (default: $LANG)", "langstr"},
{"script", 0, 0, G_OPTION_ARG_STRING, &script,
"Set text script (default: auto)", "ISO-15924 tag"},
{"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features,
"Font features to apply to text", "TODO"},
{"face-index", 0, 0, G_OPTION_ARG_INT, &face_index,
"Face index (default: 0)", "index"},
{"font-size", 0, 0, G_OPTION_ARG_DOUBLE, &font_size,
"Font size", "size"},
{NULL}
};
GError *error = NULL;
GError *parse_error = NULL;
GOptionContext *context;
size_t len;
context = g_option_context_new ("- FONT-FILE TEXT");
g_option_context_add_main_entries (context, entries, NULL);
if (!g_option_context_parse (context, &argc, &argv, &parse_error))
{
if (parse_error != NULL)
fail ("%s", parse_error->message);
else
fail ("Option parse error");
exit(1);
}
g_option_context_free(context);
g_free(shapers_options);
if (argc != 3) {
g_printerr ("Usage: %s [OPTION...] FONT-FILE TEXT\n", g_get_prgname ());
exit (1);
}
font_file = argv[1];
text = g_locale_to_utf8 (argv[2], -1, NULL, NULL, &error);
}
static void
parse_space (char **pp)
{
@ -309,15 +347,20 @@ skip_one_feature (char **pp)
*pp = *pp + strlen (*pp);
}
static void parse_features (char *s)
static gboolean
parse_features (const char *name G_GNUC_UNUSED,
const char *arg,
gpointer data G_GNUC_UNUSED,
GError **error G_GNUC_UNUSED)
{
char *s = (char *) arg;
char *p;
num_features = 0;
features = NULL;
if (!*s)
return;
return TRUE;
/* count the features first, so we can allocate memory */
p = s;
@ -339,6 +382,8 @@ static void parse_features (char *s)
else
skip_one_feature (&p);
}
return TRUE;
}
@ -465,8 +510,8 @@ draw (void)
height = 0;
width = 0;
x = margin_l;
y = margin_t;
x = opt_margin.l;
y = opt_margin.t;
do {
cairo_text_extents_t extents;
@ -513,8 +558,8 @@ draw (void)
p = end + 1;
} while (*end);
height = y + margin_b;
width += margin_l + margin_r;
height = y + opt_margin.b;
width += opt_margin.l + opt_margin.r;
cairo_destroy (cr);
}
@ -530,7 +575,7 @@ main (int argc, char **argv)
setlocale (LC_ALL, "");
parse_opts (argc, argv);
parse_options (argc, argv);
FT_Init_FreeType (&ft_library);
if (FT_New_Face (ft_library, font_file, face_index, &ft_face)) {

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