upload projectHEADmaster

1 files changed, 324 insertions, 0 deletions

diff --git a/src/basic/string32.c b/src/basic/string32.c
new file mode 100644
index 0000000..c88a1a8
--- /dev/null
+++ b/src/basic/string32.c
@@ -0,0 +1,324 @@
+#include "basic/arena.h"
+#include <SDL2/SDL_keycode.h>
+#include <os/os.h>
+#include <string.h>
+
+#include <basic/basic.h>
+#include <basic/string32.h>
+
+
+
+void
+string32_buffer_move_cursor_left(String32Buffer *buffer)
+{
+    if (buffer->cursor > 0) {
+        buffer->cursor -= 1;
+    }
+}
+
+
+void
+string32_buffer_move_cursor_right(String32Buffer *buffer)
+{
+    if (buffer->cursor < buffer->len) {
+        buffer->cursor += 1;
+    }
+}
+
+
+b32
+string32_buffer_del_left(String32Buffer *buffer)
+{
+    if (buffer->cursor > 0){
+        u32 *dest = &buffer->codepoints[buffer->cursor - 1];
+        u32 *src  = &buffer->codepoints[buffer->cursor];
+        size_t move_size = (buffer->len - buffer->cursor) * sizeof(u32);
+        memmove(dest, src, move_size);
+
+        buffer->len -= 1;
+        buffer->cursor -= 1;
+
+        return true;
+    }
+
+    return false;
+}
+
+
+b32
+string32_buffer_del_right(String32Buffer *buffer)
+{
+    if (buffer->cursor < buffer->len) {
+        u32 *dest = &buffer->codepoints[buffer->cursor];
+        u32 *src  = &buffer->codepoints[buffer->cursor + 1];
+        size_t move_size = (buffer->len - buffer->cursor) * sizeof(u32);
+        memmove(dest, src, move_size);
+
+        buffer->len -= 1;
+
+        return true;
+    }
+
+    return false;
+}
+
+
+b32
+string32_buffer_insert(String32Buffer *buffer, u32 codepoint)
+{
+    if (buffer->len < buffer->max_len &&
+        buffer->cursor <= buffer->len)
+    {
+        u32 *dest = &buffer->codepoints[buffer->cursor + 1];
+        u32 *src  = &buffer->codepoints[buffer->cursor];
+        size_t move_size = (buffer->len - buffer->cursor) * sizeof(u32);
+        memmove(dest, src, move_size);
+
+        buffer->codepoints[buffer->cursor] = codepoint;
+        buffer->len += 1;
+        buffer->cursor += 1;
+
+        return true;
+    }
+
+    return false;
+}
+
+
+void
+string32_buffer_edit(String32Buffer *buffer, OSEventKeyPress key_press)
+{
+    if (key_press.is_unicode) {
+        switch (key_press.code) {
+        case '\b': {
+            string32_buffer_del_left(buffer);
+        } break;
+
+        case 127: {
+            string32_buffer_del_right(buffer);
+        } break;
+
+        default: {
+            string32_buffer_insert(buffer, key_press.code);
+        }
+        }
+    }
+    else {
+        if (key_press.code == OS_KEYCODE_LEFT) {
+            string32_buffer_move_cursor_left(buffer);
+        }
+        else if (key_press.code == OS_KEYCODE_RIGHT) {
+            string32_buffer_move_cursor_right(buffer);
+        }
+    }
+}
+
+
+void
+string32_buffer_append_string32_buffer(String32Buffer *buffer, String32Buffer *src_buffer)
+{
+    size_t len_avail = buffer->max_len - buffer->len;
+    size_t copy_count = len_avail >= src_buffer->len ? src_buffer->len : len_avail;
+    u32 *dest = buffer->codepoints + buffer->len;
+    u32 *src = src_buffer->codepoints;
+    for (size_t i = 0; i < copy_count; i++) {
+        *dest++ = *src++;
+    }
+    buffer->len += copy_count;
+}
+
+
+void
+string32_buffer_append_string32(String32Buffer *buffer, String32 *str)
+{
+    size_t len_avail = buffer->max_len - buffer->len;
+    size_t copy_count = str->len >= len_avail ? len_avail : str->len;
+    u32 *dest = buffer->codepoints + buffer->len;
+    u32 *src = str->codepoints;
+    for (size_t i = 0; i < copy_count; i++) {
+        *dest++ = *src++;
+    }
+    buffer->len += copy_count;
+}
+
+
+void
+string32_buffer_append_ascii_cstr(String32Buffer *buffer, char *ascii)
+{
+    while (*ascii) {
+        if (buffer->len >= buffer->max_len) {
+            break;
+        }
+
+        buffer->codepoints[buffer->len] = *ascii;
+        buffer->len += 1;
+        ascii++;
+    }
+}
+
+
+void
+string32_buffer_copy_string32_buffer(String32Buffer *dest, String32Buffer *src)
+{
+    string32_buffer_reset(dest);
+    string32_buffer_append_string32_buffer(dest, src);
+}
+
+
+void
+string32_buffer_copy_string32(String32Buffer *buffer, String32 *str)
+{
+    string32_buffer_reset(buffer);
+    string32_buffer_append_string32(buffer, str);
+}
+
+
+b32 string32_buffer_equal_string32(String32Buffer *buffer, String32 *str)
+{
+    if (buffer->len != str->len) {
+        return false;
+    }
+    for (size_t i = 0; i < buffer->len; i++) {
+        if (buffer->codepoints[i] != str->codepoints[i]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+
+String32 *
+string32_buffer_to_string32_with_len(Arena *arena, String32Buffer *buffer, size_t len)
+{
+    size_t push_size = sizeof(String32) + len * sizeof(u32);
+    String32 *result = arena_push(arena, push_size);
+
+    memcpy(result->codepoints, buffer->codepoints, len * sizeof(u32));
+    result->len = len;
+
+    return result;
+}
+
+
+String32 *
+string32_buffer_to_string32(Arena *arena, String32Buffer *buffer)
+{
+    size_t push_size = sizeof(String32) + buffer->len * sizeof(u32);
+    String32 *result = arena_push(arena, push_size);
+
+    memcpy(result->codepoints, buffer->codepoints, buffer->len * sizeof(u32));
+    result->len = buffer->len;
+
+    return result;
+}
+
+
+void
+string32_buffer_print(String32Buffer *buffer)
+{
+    for (size_t i = 0; i < buffer->len; i++) {
+        putchar(buffer->codepoints[i]);
+    }
+}
+
+
+void
+string32_buffer_reset(String32Buffer *buffer)
+{
+    buffer->len = 0;
+    buffer->cursor = 0;
+}
+
+void
+string32_buffer_init_in_place(String32Buffer *buffer, size_t max_len)
+{
+    buffer->cursor = 0;
+    buffer->len = 0;
+    buffer->max_len = max_len;
+}
+
+
+String32Buffer *
+string32_buffer_create(Arena *arena, size_t max_len)
+{
+    size_t push_size = sizeof(String32Buffer) + max_len * sizeof(u32);
+    String32Buffer *buffer = arena_push(arena, push_size);
+
+    buffer->cursor = 0;
+    buffer->len = 0;
+    buffer->max_len = max_len;
+
+    return buffer;
+}
+
+
+void
+string32_print(String32 *str)
+{
+    for (size_t i = 0; i < str->len; i++) {
+        putchar(str->codepoints[i]);
+    }
+}
+
+
+b32
+string32_equal(String32 *str1, String32 *str2) { if (str1->len != str2->len) {
+        return false;
+    }
+
+    for (size_t i = 0; i < str1->len; i++) {
+        if (str1->codepoints[i] != str2->codepoints[i]) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+
+String32 *
+string32_create_from_u32_array(Arena *arena, u32 *buffer, size_t len)
+{
+    size_t push_size = sizeof(String32) + len * sizeof(u32);
+    String32 *result = arena_push(arena, push_size);
+
+    memcpy(result->codepoints, buffer, len);
+    result->len = len;
+
+    return result;
+}
+
+
+
+String32 *
+string32_create_from_string32(Arena *arena, String32 *src)
+{
+    size_t push_size = sizeof(String32) + src->len * sizeof(u32);
+    String32 *result = arena_push(arena, push_size);
+
+    for (size_t i = 0; i < src->len; i++) {
+        result->codepoints[i] = src->codepoints[i];
+    }
+    result->len = src->len;
+
+    return result;
+}
+
+
+String32 *
+string32_create_from_ascii(Arena *arena, char *ascii)
+{
+    size_t len = strlen(ascii);
+
+    size_t push_size = sizeof(String32) + strlen(ascii) * sizeof(u32);
+    String32 *result = arena_push(arena, push_size);
+
+    u32 *dest = result->codepoints;
+    while (*ascii) {
+        *dest++ = *ascii++;
+    }
+    result->len = len;
+
+    return result;
+}
+