forked from github/server
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
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#include "callback.h"
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#include <stdlib.h>
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#include <string.h>
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static struct reg {
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struct reg * next;
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CALLBACK cb;
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const char *name;
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} *registry;
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CALLBACK create_callback(void (*cbv)(va_list va)) {
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CALLBACK cb;
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cb.cbv = cbv;
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return cb;
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}
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void reset_callbacks(void) {
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registry = 0;
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}
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CALLBACK register_callback(const char *name, void (*cbv)(va_list va))
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{
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struct reg * r = (struct reg *)malloc(sizeof(struct reg));
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r->next = registry;
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r->name = name;
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r->cb.cbv = cbv;
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registry = r;
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return r->cb;
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}
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int find_callback(const char *name, CALLBACK *result) {
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if (result && name) {
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struct reg *r;
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for (r=registry;r;r=r->next) {
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if (strcmp(r->name, name)==0) {
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*result = r->cb;
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return 0;
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}
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}
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}
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return -1;
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}
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int call_callback(CALLBACK cb, const char *name, ... ) {
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va_list ap;
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if (name) {
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int err = find_callback(name, &cb);
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if (err) return err;
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}
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va_start(ap, name);
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cb.cbv(ap);
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va_end(ap);
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return 0;
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}
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