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[util] Check all specified shapers are known (#993) 

A bit brute force and requires all shapers to be known, not just one.

Fixes https://github.com/harfbuzz/harfbuzz/issues/956
This commit is contained in:
Khaled Hosny 2018-04-19 23:41:37 +03:00 committed by Behdad Esfahbod
parent 535fb23c02
commit 6fdeeb2ae3
1 changed files with 20 additions and 2 deletions
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22
util/options.cc
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@ -192,11 +192,29 @@ static gboolean
parse_shapers (const char *name G_GNUC_UNUSED,
const char *arg,
gpointer data,
GError **error G_GNUC_UNUSED)
GError **error)
{
shape_options_t *shape_opts = (shape_options_t *) data;
char **shapers = g_strsplit (arg, ",", 0);
for (char **shaper = shapers; *shaper; shaper++) {
bool found = false;
for (const char **hb_shaper = hb_shape_list_shapers (); *hb_shaper; hb_shaper++) {
if (strcmp (*shaper, *hb_shaper) == 0) {
found = true;
break;
}
}
if (!found) {
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
"Unknown or unsupported shaper: %s", *shaper);
g_strfreev (shapers);
return false;
}
}
g_strfreev (shape_opts->shapers);
shape_opts->shapers = g_strsplit (arg, ",", 0);
shape_opts->shapers = shapers;
return true;
}