1 files changed, 29 insertions, 0 deletions
diff --git a/src/visualizer/grid.h b/src/visualizer/grid.h
new file mode 100644
index 0000000..f327df8
--- /dev/null
+++ b/src/visualizer/grid.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <stddef.h>
+
+struct PsiStringBuilder
+{
+	char *data;
+	size_t len;
+	size_t cap;
+};
+
+struct PsiStringBuilder psi_new_string_builder(void);
+void psi_string_builder_append(struct PsiStringBuilder *sb, const char *s);
+char *psi_string_builder_finish(struct PsiStringBuilder *sb);
+
+struct PsiGlyphRow
+{
+	char (*cells)[5];
+	size_t width;
+};
+
+struct PsiGlyphRow psi_new_glyph_row(size_t width);
+void psi_free_glyph_row(struct PsiGlyphRow *row);
+void psi_glyph_row_set(struct PsiGlyphRow *row, size_t index, const char *glyph);
+size_t psi_glyph_row_place(struct PsiGlyphRow *row, size_t start, const char *utf8);
+void psi_glyph_row_fill_space(struct PsiGlyphRow *row, size_t from, size_t to, const char *glyph);
+void psi_glyph_row_render(struct PsiGlyphRow row, struct PsiStringBuilder *sb);
+
+size_t psi_utf8_count(const char *s);