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ezxml: iterate over sibling chain in ezxml_free #99

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Merged
robbr48 merged 1 commit into from
May 20, 2026
Merged

ezxml: iterate over sibling chain in ezxml_free #99

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60 changes: 32 additions & 28 deletions 3rdparty/ezxml/ezxml.c
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Original file line number Diff line number Diff line change
Expand Up @@ -787,44 +787,48 @@ char *ezxml_toxml(ezxml_t xml)
// free the memory allocated for the ezxml structure
void ezxml_free(ezxml_t xml)
{
ezxml_root_t root = (ezxml_root_t)xml;
ezxml_root_t root;
int i, j;
char **a, *s;

if (! xml) return;
ezxml_free(xml->child);
ezxml_free(xml->ordered);
while (xml) {
ezxml_t ordered = xml->ordered;
root = (ezxml_root_t)xml;

if (! xml->parent) { // free root tag allocations
for (i = 10; root->ent[i]; i += 2) // 0 - 9 are default entites (<>&"')
if ((s = root->ent[i + 1]) < root->s || s > root->e) free(s);
free(root->ent); // free list of general entities
ezxml_free(xml->child);

for (i = 0; (a = root->attr[i]); i++) {
for (j = 1; a[j++]; j += 2) // free malloced attribute values
if (a[j] && (a[j] < root->s || a[j] > root->e)) free(a[j]);
free(a);
}
if (root->attr[0]) free(root->attr); // free default attribute list
if (! xml->parent) { // free root tag allocations
for (i = 10; root->ent[i]; i += 2) // 0 - 9 are default entites (<>&"')
if ((s = root->ent[i + 1]) < root->s || s > root->e) free(s);
free(root->ent); // free list of general entities

for (i = 0; root->pi[i]; i++) {
for (j = 1; root->pi[i][j]; j++);
free(root->pi[i][j + 1]);
free(root->pi[i]);
}
if (root->pi[0]) free(root->pi); // free processing instructions
for (i = 0; (a = root->attr[i]); i++) {
for (j = 1; a[j++]; j += 2) // free malloced attribute values
if (a[j] && (a[j] < root->s || a[j] > root->e)) free(a[j]);
free(a);
}
if (root->attr[0]) free(root->attr); // free default attribute list

if (root->len == -1) free(root->m); // malloced xml data
for (i = 0; root->pi[i]; i++) {
for (j = 1; root->pi[i][j]; j++);
free(root->pi[i][j + 1]);
free(root->pi[i]);
}
if (root->pi[0]) free(root->pi); // free processing instructions

if (root->len == -1) free(root->m); // malloced xml data
#ifndef EZXML_NOMMAP
else if (root->len) munmap(root->m, root->len); // mem mapped xml data
else if (root->len) munmap(root->m, root->len); // mem mapped xml data
#endif // EZXML_NOMMAP
if (root->u) free(root->u); // utf8 conversion
}
if (root->u) free(root->u); // utf8 conversion
}

ezxml_free_attr(xml->attr); // tag attributes
if ((xml->flags & EZXML_TXTM)) free(xml->txt); // character content
if ((xml->flags & EZXML_NAMEM)) free(xml->name); // tag name
free(xml);
ezxml_free_attr(xml->attr); // tag attributes
if ((xml->flags & EZXML_TXTM)) free(xml->txt); // character content
if ((xml->flags & EZXML_NAMEM)) free(xml->name); // tag name
free(xml);
xml = ordered;
}
}

// return parser error message or empty string if none
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