struct scanner_token *
get_scanner_token_debug(struct scanner *scanner)
{
if (!scanner_has_tokens(scanner)) return NULL;
dump_scanner(scanner);
/* Make sure we do not return invalid tokens */
assert(!scanner_has_tokens(scanner)
|| scanner->current->type != 0);
return get_scanner_token(scanner);
}
int
css_parse_background_value(struct css_property_info *propinfo,
union css_property_value *value,
struct scanner *scanner)
{
int success = 0;
assert(propinfo->value_type == CSS_VT_COLOR);
/* This is pretty naive, we just jump space by space, trying to parse
* each token as a color. */
while (scanner_has_tokens(scanner)) {
struct scanner_token *token = get_scanner_token(scanner);
if (!check_css_precedence(token->type, ';'))
break;
if (token->type == ','
|| !css_parse_color_value(propinfo, value, scanner)) {
skip_scanner_token(scanner);
continue;
}
success++;
}
return success;
}
void
dump_scanner(struct scanner *scanner)
{
unsigned char buffer[MAX_STR_LEN];
struct scanner_token *token = scanner->current;
struct scanner_token *table_end = scanner->table + scanner->tokens;
unsigned char *srcpos = token->string, *bufpos = buffer;
int src_lookahead = 50;
int token_lookahead = 4;
int srclen;
if (!scanner_has_tokens(scanner)) return;
memset(buffer, 0, MAX_STR_LEN);
for (; token_lookahead > 0 && token < table_end; token++, token_lookahead--) {
int buflen = MAX_STR_LEN - (bufpos - buffer);
int added = snprintf(bufpos, buflen, "[%.*s] ", token->length, token->string);
bufpos += added;
}
if (scanner->tokens > token_lookahead) {
memcpy(bufpos, "... ", 4);
bufpos += 4;
}
srclen = strlen(srcpos);
int_upper_bound(&src_lookahead, srclen);
*bufpos++ = '[';
/* Compress the lookahead string */
for (; src_lookahead > 0; src_lookahead--, srcpos++, bufpos++) {
if (*srcpos == '\n' || *srcpos == '\r' || *srcpos == '\t') {
*bufpos++ = '\\';
*bufpos = *srcpos == '\n' ? 'n'
: (*srcpos == '\r' ? 'r' : 't');
} else {
*bufpos = *srcpos;
}
}
if (srclen > src_lookahead)
memcpy(bufpos, "...]", 4);
else
memcpy(bufpos, "]", 2);
errfile = scanner->file, errline = scanner->line;
elinks_wdebug("%s", buffer);
}
