From 30740ca4131d1f574718262451b4410207dc8d4e Mon Sep 17 00:00:00 2001
From: Mitya Selivanov <automainint@guattari.tech>
Date: Sun, 14 Jul 2024 21:12:37 +0200
Subject: Reworking the build system

---
 kit/string_builder.h | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 kit/string_builder.h

(limited to 'kit/string_builder.h')

diff --git a/kit/string_builder.h b/kit/string_builder.h
new file mode 100644
index 0000000..23eda65
--- /dev/null
+++ b/kit/string_builder.h
@@ -0,0 +1,112 @@
+#ifndef KIT_STRING_BUILDER_H
+#define KIT_STRING_BUILDER_H
+
+#include "status.h"
+#include "string_ref.h"
+#include "dynamic_array.h"
+
+#include <assert.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef KIT_DA(char) kit_str_builder_t;
+
+#ifdef __GNUC__
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wunused-function"
+#  pragma GCC diagnostic ignored "-Wunknown-pragmas"
+#  pragma GCC            push_options
+#  pragma GCC            optimize("O3")
+#endif
+
+static kit_str_builder_t kit_str_build(kit_str_t        s,
+                                       kit_allocator_t *alloc) {
+  assert(s.size >= 0 && (s.size == 0 || s.values != NULL));
+  kit_str_builder_t builder;
+  memset(&builder, 0, sizeof builder);
+  if (s.size < 0 || (s.size != 0 && s.values == NULL))
+    return builder;
+  KIT_DA_INIT(builder, s.size, alloc);
+  assert(builder.size == s.size);
+  if (builder.size == s.size)
+    memcpy(builder.values, s.values, s.size);
+  return builder;
+}
+
+static kit_str_builder_t kit_substr_build(kit_str_t s, i64 index,
+                                          i64              size,
+                                          kit_allocator_t *alloc) {
+  assert(index + size <= s.size);
+  if (index + size > s.size) {
+    kit_str_builder_t builder;
+    memset(&builder, 0, sizeof builder);
+    return builder;
+  }
+  return kit_str_build(kit_str(size, s.values + index), alloc);
+}
+
+static s32 kit_str_append(kit_str_builder_t *a, kit_str_t b) {
+  assert(a != NULL);
+  if (a == NULL)
+    return KIT_ERROR_INVALID_ARGUMENT;
+  if (b.size <= 0)
+    return KIT_OK;
+  i64 n = a->size;
+  KIT_DA_RESIZE(*a, n + b.size);
+  if (a->size != n + b.size)
+    return KIT_ERROR_OUT_OF_MEMORY;
+  memcpy(a->values + n, b.values, b.size);
+  return KIT_OK;
+}
+
+static s32 kit_str_insert(kit_str_builder_t *a, i64 index,
+                          kit_str_t b) {
+  assert(a != NULL && index >= 0 && index <= a->size);
+  if (a == NULL || index < 0 || index > a->size)
+    return KIT_ERROR_INVALID_ARGUMENT;
+  if (b.size <= 0)
+    return KIT_OK;
+  i64 n = a->size;
+  KIT_DA_RESIZE(*a, n + b.size);
+  if (a->size != n + b.size)
+    return KIT_ERROR_OUT_OF_MEMORY;
+  if (index < n)
+    memmove(a->values + (index + b.size), a->values + index,
+            n - index);
+  memcpy(a->values + index, b.values, b.size);
+  return KIT_OK;
+}
+
+static s32 kit_str_erase(kit_str_builder_t *a, i64 index, i64 size) {
+  assert(a != NULL && index >= 0 && size >= 0 &&
+         index + size <= a->size);
+  if (a == NULL || index < 0 || size < 0 || index + size > a->size)
+    return KIT_ERROR_INVALID_ARGUMENT;
+  if (size <= 0)
+    return KIT_OK;
+  if (index + size < a->size)
+    memmove(a->values + index, a->values + (index + size),
+            a->size - index - size);
+  KIT_DA_RESIZE(*a, a->size - size);
+  return KIT_OK;
+}
+
+#ifdef __GNUC__
+#  pragma GCC            pop_options
+#  pragma GCC diagnostic pop
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#define str_builder_t kit_str_builder_t
+#define str_build kit_str_build
+#define substr_build kit_substr_build
+#define str_append kit_str_append
+#define str_insert kit_str_insert
+#define str_erase kit_str_erase
+
+#endif
-- 
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