UPDATE: Dump of initial files

base/src/constants.rs

@@ -0,0 +1,16 @@
+/// Excel compatibility values
+/// COLUMN_WIDTH and ROW_HEIGHT are pixel values
+/// A column width of Excel value `w` will result in `w * COLUMN_WIDTH_FACTOR` pixels
+/// Note that these constants are inlined
+pub(crate) const DEFAULT_COLUMN_WIDTH: f64 = 100.0;
+pub(crate) const DEFAULT_ROW_HEIGHT: f64 = 21.0;
+pub(crate) const COLUMN_WIDTH_FACTOR: f64 = 12.0;
+pub(crate) const ROW_HEIGHT_FACTOR: f64 = 2.0;
+
+pub(crate) const LAST_COLUMN: i32 = 16_384;
+pub(crate) const LAST_ROW: i32 = 1_048_576;
+
+// 693_594 is computed as:
+// NaiveDate::from_ymd(1900, 1, 1).num_days_from_ce() - 2
+// The 2 days offset is because of Excel 1900 bug
+pub(crate) const EXCEL_DATE_BASE: i32 = 693_594;