From 6cefc948d37cd856d23caf00970ad3565672b016 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 21 Aug 2021 16:14:30 +0200
Subject: Removed stream dependency from buffer

---
 buffer.c | 24 ++++++++++++------------
 buffer.h |  6 ++----
 stream.c |  2 +-
 3 files changed, 15 insertions(+), 17 deletions(-)

diff --git a/buffer.c b/buffer.c
index cadfb7d..ad6ca25 100644
--- a/buffer.c
+++ b/buffer.c
@@ -31,23 +31,23 @@ void grow(lua_State * L, struct buffer * b)
 	b->allocated = allocated;
 }
 
-int read_more(lua_State * L, struct stream * s, int minimum_length, lua_KContext ctx)
+int read_more(lua_State * L, int fd, struct buffer * in, int minimum_length, lua_KContext ctx)
 {
-	const int free_space = s->in.allocated + s->in.offset - s->in.length - 1;
+	const int free_space = in->allocated + in->offset - in->length - 1;
 
 	while (free_space < minimum_length)
 	{
-		grow(L, &s->in);
+		grow(L, in);
 	}
 
-	if (0 < s->in.offset)
+	if (0 < in->offset)
 	{
-		memmove(s->in.data, s->in.data + s->in.offset, s->in.length - s->in.offset);
-		s->in.offset = 0;
-		s->in.length -= s->in.offset;
+		memmove(in->data, in->data + in->offset, in->length - in->offset);
+		in->offset = 0;
+		in->length -= in->offset;
 	}
 
-	int length = read(s->fd, s->in.data + s->in.length, free_space);
+	int length = read(fd, in->data + in->length, free_space);
 
 	if (-1 == length)
 	{
@@ -62,18 +62,18 @@ int read_more(lua_State * L, struct stream * s, int minimum_length, lua_KContext
 		}
 	}
 
-	s->in.length += length;
+	in->length += length;
 
 	return length;
 }
 
-int prepare_at_least(lua_State * L, struct stream * s, int minimum_length, lua_KContext ctx)
+int prepare_at_least(lua_State * L, int fd, struct buffer * in, int minimum_length, lua_KContext ctx)
 {
-	const int remaining_bytes = s->in.length - s->in.next;
+	const int remaining_bytes = in->length - in->next;
 
 	if (remaining_bytes < minimum_length)
 	{
-		return read_more(L, s, minimum_length, ctx);
+		return read_more(L, fd, in, minimum_length, ctx);
 	}
 
 	return remaining_bytes;
diff --git a/buffer.h b/buffer.h
index d4fafa6..66f8f02 100644
--- a/buffer.h
+++ b/buffer.h
@@ -2,8 +2,6 @@
 
 #include <lua.h>
 
-struct stream;  // TODO: Remove buffer to stream dependency.
-
 struct buffer
 {
 	char * data;
@@ -14,6 +12,6 @@ struct buffer
 };
 
 void grow(lua_State *, struct buffer *);
-int prepare_at_least(lua_State *, struct stream *, const int, lua_KContext);
-int read_more(lua_State *, struct stream *, const int, lua_KContext);
+int read_more(lua_State *, const int, struct buffer *, const int, lua_KContext);
+int prepare_at_least(lua_State *, const int, struct buffer *, const int, lua_KContext);
 int until(struct buffer *, const char *, const int);
diff --git a/stream.c b/stream.c
index f04806e..cb5eff5 100644
--- a/stream.c
+++ b/stream.c
@@ -155,7 +155,7 @@ int stream_readk(lua_State * L, int status, lua_KContext ctx)
 		int remaining_bytes;
 		do
 		{
-			remaining_bytes = prepare_at_least(L, s, (int) pattern_length, ctx);
+			remaining_bytes = prepare_at_least(L, s->fd, &s->in, (int) pattern_length, ctx);
 			offset = until(&s->in, pattern, (int) pattern_length);
 		}
 		while (-1 == offset && 0 < remaining_bytes);
-- 
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