excel_plus 0.0.5

Fast, low-memory Excel (.xlsx) library for Dart and Flutter to read, create, edit, and style spreadsheets. A drop-in replacement for the excel package.

0.0.5

A small styling addition plus correctness and robustness fixes (all backward compatible):

• Added: CellStyle.indent — alignment-side cell padding (OOXML <alignment indent="N">), with full read/write round-trip; negative values clamp to zero.
• Fixed: illegal XML 1.0 control characters in cell text are now stripped on save, so files no longer open as "corrupt" in Excel.
• Fixed: Excel.findAndReplace now returns the actual replacement count and accepts non-String targets without throwing.
• Fixed: on the web, save() now triggers the browser download under wasm builds (flutter build web --wasm), not only the JS compiler — the conditional import now uses dart.library.js_interop, and the download Blob is constructed correctly for dart:js_interop.
• Fixed: underline styles read single vs double correctly, and bold/italic now honour val="0" (explicitly-off) instead of always reading as enabled.
• Fixed: the parser no longer crashes on out-of-range shared-string or style indexes, ISO-8601 (t="d") date cells, or namespace-prefixed worksheet XML (x:row, x:c).
• Fixed: cells without an explicit r reference are positioned by column order, and inline strings made of multiple runs keep all of their text.
• Fixed: getColumnWidth / getRowHeight return Excel's defaults instead of throwing when a sheet defines no defaults.
• Fixed: headerFooter is written in the schema-correct position (before drawing), so Excel no longer prompts to repair the file.
• Improved: more robust style parsing — malformed numFmt/border entries degrade gracefully instead of failing.

0.0.4

• Upgraded the xml dependency to ^7.0.1 and updated internal XML name handling for compatibility.
• Reworked the example app into a real workbook demo with import, inline editing, styling, sheet tools, and export flows.
• Added a dedicated Validation Lab screen, bundled workbook sample, and safer temp-directory fallback when platform storage plugins are unavailable.
• Improved the example web bootstrap so debug runs use a compatible renderer while wasm builds still opt into skwasm.

0.0.3

• Organized API docs into 5 categories: Core, Cell Values, Styling, Number Formats, Layout.
• Hidden internal APIs (Parser, ExcelWriter, FastList, etc.) from public documentation.
• Improved dartdoc comments across all public classes and methods.
• Cleaned up Excel class method docs with proper one-line summaries.

0.0.2

• Removed collection and equatable dependencies — reduced to 3 deps (archive, xml, web).
• Codebase cleanup: removed dead code, duplicate utilities, and redundant comments.
• Consolidated XML escaping into a single shared utility.
• Extracted common date/time fraction calculation helper.
• Fixed minimum xml constraint to ^6.3.0 for downgrade compatibility.

0.0.1

• Initial release.
• Performance-optimized fork of excel v5.0.0.
• SAX-based streaming parser replaces full DOM parsing for cell data and shared strings.
• Lazy sheet loading — sheets are parsed on first access, not at file open.
• O(1) cell style lookup via cached reverse index.
• Smart archive cloning — reuses unmodified ZIP entries instead of copying.
• Fixed-point span correction algorithm with early termination.
• 100% API compatible — drop-in replacement for the excel package.
• 76 unit tests + 13 integration tests on Android emulator.