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/* See LICENSE file for copyright and license details. */
#include "common.h"
static int
matches(const char *var, const struct libenv_variable *known, int is_name_only,
enum libenv_class classes_head, va_list classes_tail, int all, size_t nclasswords)
{
size_t i, w, b;
for (; known->name; known++) {
for (i = 0; known->name[i]; i++)
if (var[i] != known->name[i])
goto next;
if (var[i] == (is_name_only ? '\0' : '='))
goto found;
next:;
}
return all && !classes_head;
found:
for (; classes_head; classes_head = va_arg(classes_tail, enum libenv_class)) {
w = (size_t)classes_head / 64U;
b = (size_t)classes_head % 64U;
if (w < nclasswords && ((known->classes[w] >> b) & 1)) {
if (!all)
return 1;
} else {
if (all)
return 0;
}
}
return all;
}
size_t
libenv_vprocess_list__(void *variables_, enum libenv_class classes_head, va_list classes_tail,
int have_head, int names, int filter, int all, int dealloc)
{
char **variables = variables_;
const struct libenv_variable *known;
size_t nclasswords;
size_t i, n = 0;
va_list classes_tail_2;
if (!variables)
return 0;
if (!have_head)
classes_head = va_arg(classes_tail, enum libenv_class);
known = libenv_get_complete_list(&nclasswords, NULL);
for (i = 0; variables[i]; i++) {
int match;
va_copy(classes_tail_2, classes_tail);
match = matches(variables[i], known, names, classes_head, classes_tail_2, all, nclasswords);
if (filter ^ match)
variables[n++] = variables[i];
else if (dealloc)
free(variables[i]);
va_end(classes_tail_2);
}
variables[n] = NULL;
return n;
}
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