static nsresult
InitOperators(void)
{
// Load the property file containing the Operator Dictionary
nsresult rv;
nsCOMPtr<nsIPersistentProperties> mathfontProp;
rv = NS_LoadPersistentPropertiesFromURISpec(getter_AddRefs(mathfontProp),
NS_LITERAL_CSTRING("resource://gre/res/fonts/mathfont.properties"));
if (NS_FAILED(rv)) return rv;
// Parse the Operator Dictionary in two passes.
// The first pass is to count the number of operators; the second pass is to
// allocate the necessary space for them and to add them in the hash table.
for (int32_t pass = 1; pass <= 2; pass++) {
OperatorData dummyData;
OperatorData* operatorData = &dummyData;
nsCOMPtr<nsISimpleEnumerator> iterator;
if (NS_SUCCEEDED(mathfontProp->Enumerate(getter_AddRefs(iterator)))) {
bool more;
uint32_t index = 0;
nsAutoCString name;
nsAutoString attributes;
while ((NS_SUCCEEDED(iterator->HasMoreElements(&more))) && more) {
nsCOMPtr<nsISupports> supports;
nsCOMPtr<nsIPropertyElement> element;
if (NS_SUCCEEDED(iterator->GetNext(getter_AddRefs(supports)))) {
element = do_QueryInterface(supports);
if (NS_SUCCEEDED(element->GetKey(name)) &&
NS_SUCCEEDED(element->GetValue(attributes))) {
// expected key: operator.\uNNNN.{infix,postfix,prefix}
if ((21 <= name.Length()) && (0 == name.Find("operator.\\u"))) {
name.Cut(0, 9); // 9 is the length of "operator.";
int32_t len = name.Length();
nsOperatorFlags form = 0;
if (kNotFound != name.RFind(".infix")) {
form = NS_MATHML_OPERATOR_FORM_INFIX;
len -= 6; // 6 is the length of ".infix";
}
else if (kNotFound != name.RFind(".postfix")) {
form = NS_MATHML_OPERATOR_FORM_POSTFIX;
len -= 8; // 8 is the length of ".postfix";
}
else if (kNotFound != name.RFind(".prefix")) {
form = NS_MATHML_OPERATOR_FORM_PREFIX;
len -= 7; // 7 is the length of ".prefix";
}
else continue; // input is not applicable
name.SetLength(len);
if (2 == pass) { // allocate space and start the storage
if (!gOperatorArray) {
if (0 == gOperatorCount) return NS_ERROR_UNEXPECTED;
gOperatorArray = new OperatorData[gOperatorCount];
if (!gOperatorArray) return NS_ERROR_OUT_OF_MEMORY;
}
operatorData = &gOperatorArray[index];
}
else {
form = 0; // to quickly return from SetOperator() at pass 1
}
// See if the operator should be retained
if (SetOperator(operatorData, form, name, attributes)) {
index++;
if (1 == pass) gOperatorCount = index;
}
}
}
}
}
}
}
return NS_OK;
}
int
mozilla_decoders_init(void)
{
static PRBool initialized = PR_FALSE;
if (initialized)
return 0;
PangoContext* context = gdk_pango_context_get ();
PangoFontMap* fontmap = pango_context_get_font_map (context);
g_object_unref (context);
if (!PANGO_IS_FC_FONT_MAP (fontmap))
return -1;
encoder_hash = g_hash_table_new(g_str_hash, g_str_equal);
cmap_hash = g_hash_table_new(g_str_hash, g_str_equal);
wide_hash = g_hash_table_new(g_str_hash, g_str_equal);
PRBool dumb = PR_FALSE;
nsCOMPtr<nsIPersistentProperties> props;
nsCOMPtr<nsISimpleEnumerator> encodeEnum;
NS_LoadPersistentPropertiesFromURISpec(getter_AddRefs(props),
NS_LITERAL_CSTRING("resource://gre/res/fonts/pangoFontEncoding.properties"));
if (!props)
goto loser;
// Enumerate the properties in this file and figure out all of the
// fonts for which we have custom encodings.
props->Enumerate(getter_AddRefs(encodeEnum));
if (!encodeEnum)
goto loser;
while (encodeEnum->HasMoreElements(&dumb), dumb) {
nsCOMPtr<nsIPropertyElement> prop;
encodeEnum->GetNext(getter_AddRefs(prop));
if (!prop)
goto loser;
nsCAutoString name;
prop->GetKey(name);
nsAutoString value;
prop->GetValue(value);
if (!StringBeginsWith(name, NS_LITERAL_CSTRING("encoding."))) {
printf("string doesn't begin with encoding?\n");
continue;
}
name = Substring(name, 9);
if (StringEndsWith(name, NS_LITERAL_CSTRING(".ttf"))) {
name = Substring(name, 0, name.Length() - 4);
// Strip off a .wide if it's there.
if (StringEndsWith(value, NS_LITERAL_STRING(".wide"))) {
g_hash_table_insert(wide_hash, g_strdup(name.get()),
g_strdup("wide"));
value = Substring(value, 0, name.Length() - 5);
}
g_hash_table_insert(encoder_hash,
g_strdup(name.get()),
g_strdup(NS_ConvertUTF16toUTF8(value).get()));
}
else if (StringEndsWith(name, NS_LITERAL_CSTRING(".ftcmap"))) {
name = Substring(name, 0, name.Length() - 7);
g_hash_table_insert(cmap_hash,
g_strdup(name.get()),
g_strdup(NS_ConvertUTF16toUTF8(value).get()));
}
else {
printf("unknown suffix used for mapping\n");
}
}
pango_fc_font_map_add_decoder_find_func(PANGO_FC_FONT_MAP(fontmap),
mozilla_find_decoder,
NULL,
NULL);
initialized = PR_TRUE;
#ifdef DEBUG_CUSTOM_ENCODER
printf("*** encoders\n");
g_hash_table_foreach(encoder_hash, (GHFunc)dump_hash, NULL);
printf("*** cmaps\n");
g_hash_table_foreach(cmap_hash, (GHFunc)dump_hash, NULL);
#endif
return 0;
loser:
return -1;
}
