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kvpair.c
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kvpair.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "conflate.h"
kvpair_t* mk_kvpair(const char* k, char** v)
{
kvpair_t* rv = calloc(1, sizeof(kvpair_t));
assert(rv);
rv->key = safe_strdup(k);
if (v) {
int i = 0;
for (i = 0; v[i]; i++) {
add_kvpair_value(rv, v[i]);
}
} else {
rv->allocated_values = 4;
rv->values = calloc(4, sizeof(char*));
assert(rv->values);
}
return rv;
}
void add_kvpair_value(kvpair_t* pair, const char* value)
{
assert(pair);
assert(value);
if (pair->allocated_values <= pair->used_values) {
pair->allocated_values = pair->allocated_values << 1;
if (pair->allocated_values == 0) {
pair->allocated_values = 4;
}
pair->values = realloc(pair->values,
sizeof(char*) * pair->allocated_values);
assert(pair->values);
}
pair->values[pair->used_values++] = safe_strdup(value);
pair->values[pair->used_values] = 0;
}
void free_kvpair(kvpair_t* pair)
{
if (pair) {
free_kvpair(pair->next);
free(pair->key);
free_string_list(pair->values);
free(pair);
}
}
void walk_kvpair(kvpair_t *pair, void *opaque, kvpair_visitor_t visitor)
{
bool keep_going = true;
while (keep_going && pair) {
keep_going = visitor(opaque,
(const char*)pair->key,
(const char **)pair->values);
pair = pair->next;
}
}
kvpair_t* find_kvpair(kvpair_t* pair, const char* key)
{
assert(key);
while (pair && strcmp(pair->key, key) != 0) {
pair = pair->next;
}
return pair;
}
char *get_simple_kvpair_val(kvpair_t *pair, const char *key)
{
assert(key);
char *rv = NULL;
kvpair_t *found = find_kvpair(pair, key);
if (found) {
rv = found->values[0];
}
return rv;
}
kvpair_t *dup_kvpair(kvpair_t *pair)
{
assert(pair);
kvpair_t *copy = mk_kvpair(pair->key, pair->values);
if (pair->next) {
copy->next = dup_kvpair(pair->next);
}
return copy;
}