From 9cf4667331b97f1123f4156273a46558e27c2d2d Mon Sep 17 00:00:00 2001
From: "@syxhe" <https://t.me/syxhe>
Date: Mon, 21 Apr 2025 17:31:37 -0500
Subject: Start work on cqueue implementation, create cleanup set of functions

---
 src/shared.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)

(limited to 'src/shared.c')

diff --git a/src/shared.c b/src/shared.c
index bec0354..02fe9a0 100644
--- a/src/shared.c
+++ b/src/shared.c
@@ -221,4 +221,111 @@ char * xdirname(const char * const path) {
 	free(tmp);
 
 	return actual;
+}
+
+
+int cleanup_init(cleanup * const loc, int size, cleanup_callback funcs[], void *args[]) {
+	if(!loc)
+		RETURNWERR(EINVAL, -1);
+	if(size < 1)
+		RETURNWERR(EINVAL, -1);
+	if(!funcs)
+		RETURNWERR(EINVAL, -1);
+	if(!args)
+		RETURNWERR(EINVAL, -1);
+
+	loc->funcs = funcs;
+	loc->args = args;
+	loc->size = size;
+	loc->used = 0;
+
+	return 0;
+}
+
+int cleanup_register(cleanup * const loc, cleanup_callback cb, void *arg) {
+	if(!loc)
+		RETURNWERR(EINVAL, -1);
+	if(loc->used >= loc->size)
+		RETURNWERR(ENOMEM, -1);
+	if(!cb)
+		RETURNWERR(EINVAL, -1);
+
+	loc->funcs[loc->used] = cb;
+	loc->args[loc->used] = arg;
+	loc->used++;
+
+	return 0;
+}
+
+int cleanup_cndregister(cleanup * const loc, unsigned char flag, cleanup_callback cb, void *arg) {
+	if(flag)
+		return 0;
+
+	if(!loc)
+		RETURNWERR(EINVAL, -1);
+	if(loc->used >= loc->size)
+		RETURNWERR(ENOMEM, -1);
+	if(!cb)
+		RETURNWERR(EINVAL, -1);
+
+	loc->funcs[loc->used] = cb;
+	loc->args[loc->used] = arg;
+	loc->used++;
+
+	return 0;
+}
+
+int cleanup_clear(cleanup * const loc) {
+	if(!loc)
+		RETURNWERR(EINVAL, -1);
+
+	loc->used = 0;
+	return 0;
+}
+
+cleanup_callback cleanup_peekf(cleanup * const loc) {
+	if(!loc)
+		RETURNWERR(EINVAL, NULL);
+	if(loc->used == 0)
+		RETURNWERR(ENODATA, NULL);
+
+	return loc->funcs[loc->used - 1];
+}
+cleanup_callback cleanup_popf(cleanup * const loc) {
+	cleanup_callback cb = cleanup_peekf(loc);
+	if(cb == NULL)
+		RETURNWERR(EINVAL, NULL);
+
+	loc->used--;
+
+	return cb;
+}
+
+void * cleanup_peeka(cleanup * const loc) {
+	if(!loc)
+		RETURNWERR(EINVAL, NULL);
+	if(loc->used == 0)
+		RETURNWERR(ENODATA, NULL);
+
+	return loc->args[loc->used - 1];
+}
+void * cleanup_popa(cleanup * const loc) {
+	void *mem = cleanup_peeka(loc);
+	if(!mem)
+		RETURNWERR(EINVAL, NULL);
+	
+	loc->used--;
+
+	return mem;
+}
+
+int cleanup_fire(cleanup * const loc) {
+	if(!loc)
+		RETURNWERR(EINVAL, -1);
+
+	for(int i = (loc->used - 1); i >= 0; i--)
+		loc->funcs[i](loc->args[i]);
+	loc->used = 0;
+
+	return 0;
 }
\ No newline at end of file
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