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add_html_to_string: If out of memory, roll back and return NULL.

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[ Backported from commits 28645973e5
  and b7dddaa685 in ELinks 0.12.GIT.
  --KON ]
This commit is contained in:
Kalle Olavi Niemitalo 2007-03-18 12:36:33 +02:00 committed by Kalle Olavi Niemitalo
parent 1c3c19c91b
commit 518cf082db
1 changed files with 11 additions and 4 deletions
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15
src/util/conv.c
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@ -280,11 +280,18 @@ add_html_to_string(struct string *string, unsigned char *src, int len)
for (; len; len--, src++) {
if (isalphanum(*src) || *src == ' '
|| *src == '.' || *src == ':' || *src == ';') {
add_bytes_to_string(string, src, 1);
if (!add_bytes_to_string(string, src, 1))
return NULL;
} else {
add_bytes_to_string(string, "&#", 2);
add_long_to_string(string, (long) *src);
add_char_to_string(string, ';');
int rollback_length = string->length;
if (!add_bytes_to_string(string, "&#", 2)
|| !add_long_to_string(string, (long) *src)
|| !add_char_to_string(string, ';')) {
string->length = rollback_length;
string->source[rollback_length] = '\0';
return NULL;
}
}
}