From a67d4744d78fc58846f29667ae49cee70fa0bf16 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Sun, 13 Oct 2024 13:33:29 +0200
Subject: libc/sb: Refactor string builder to allow for none malloc allocations

A lot of code written usually has means of doing allocations in a more
optimal way than having the string builder library doing it itself.

For example a temporary buffer can be allocated on the stack and the
string builder functions can then make use of this buffer without ever
having to run malloc/free(which would be expensive)
---
 userland/libc/include/tb/sb.h | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

(limited to 'userland/libc/include/tb/sb.h')

diff --git a/userland/libc/include/tb/sb.h b/userland/libc/include/tb/sb.h
index c2fa1cf..8493997 100644
--- a/userland/libc/include/tb/sb.h
+++ b/userland/libc/include/tb/sb.h
@@ -2,25 +2,29 @@
 #define SB_H
 #include "sv.h"
 #include <stddef.h>
+#include <stdint.h>
 
 struct sb {
   char *string;
   size_t length;
   size_t capacity;
+  uint8_t prebuffer;
 };
 
 struct sv;
 
-void sb_init(struct sb *ctx, size_t starting_capacity);
+void sb_init(struct sb *ctx);
+int sb_init_capacity(struct sb *ctx, size_t starting_capacity);
+void sb_init_buffer(struct sb *ctx, char *buffer, size_t size);
 void sb_free(struct sb *ctx);
 void sb_reset(struct sb *ctx);
 int sb_isempty(const struct sb *ctx);
-void sb_append_char(struct sb *ctx, char c);
+int sb_append_char(struct sb *ctx, char c);
 int sb_delete_right(struct sb *ctx, size_t n);
-void sb_append(struct sb *ctx, const char *s);
-void sb_append_buffer(struct sb *ctx, const char *buffer,
+int sb_append(struct sb *ctx, const char *s);
+int sb_append_buffer(struct sb *ctx, const char *buffer,
                       size_t length);
-void sb_append_sv(struct sb *ctx, struct sv sv);
-void sb_prepend_sv(struct sb *ctx, struct sv sv);
-void sb_prepend_buffer(struct sb *ctx, const char *buffer, size_t length);
+int sb_append_sv(struct sb *ctx, struct sv sv);
+int sb_prepend_sv(struct sb *ctx, struct sv sv);
+int sb_prepend_buffer(struct sb *ctx, const char *buffer, size_t length);
 #endif
-- 
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