| 1 | //! Text typed as ops through a `Section`, for the examples that edit a section file. |
| 2 | #![allow(dead_code)] |
| 3 | |
| 4 | use onestore::{ |
| 5 | Arena, ExGuid, Section, Transaction, |
| 6 | op::{Edit, Op, OpError, PageOp}, |
| 7 | }; |
| 8 | use std::{ |
| 9 | ops::Range, |
| 10 | time::{SystemTime, UNIX_EPOCH}, |
| 11 | }; |
| 12 | |
| 13 | /// FILETIME now, as an edit's `at`. |
| 14 | pub fn now() -> u64 { |
| 15 | let unix = SystemTime::now() |
| 16 | .duration_since(UNIX_EPOCH) |
| 17 | .unwrap_or_default(); |
| 18 | (unix.as_secs() + 11_644_473_600) * 10_000_000 + u64::from(unix.subsec_nanos() / 100) |
| 19 | } |
| 20 | |
| 21 | /// The op replacing `range` of the text object `text` in `space` with `with`. |
| 22 | pub fn text(space: ExGuid, text: ExGuid, range: Range<u32>, with: &str) -> Edit { |
| 23 | let op = PageOp::Text { |
| 24 | text, |
| 25 | range, |
| 26 | with: with.to_owned(), |
| 27 | }; |
| 28 | Edit { |
| 29 | at: now(), |
| 30 | ops: vec![Op::Page { space, op }], |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | /// The transaction `edit` seals into on `image`, as `author` made it; none when it stores |
| 35 | /// nothing. |
| 36 | pub fn sealed(image: &[u8], author: &str, edit: &Edit) -> Result<Option<Transaction>, OpError> { |
| 37 | let arena = Arena::default(); |
| 38 | let mut section = Section::open(&arena, image.to_vec()).map_err(OpError::Failed)?; |
| 39 | section.apply(author, edit)?; |
| 40 | section.seal().map_err(OpError::Failed) |
| 41 | } |