6 Commits

Author	SHA1	Message	Date
Jason Nelson	da44e1a540	Improve code quality (#825) ... * Avoid encoding ASCII in more cases * Make Space a const * Use WriteWhiteSpace extension to eliminate possible virtual call * Use ASCII when encoding constrained character subset * Simplify pragmas * Revert Whitespace rename * Fix using statement order * Remove obsolete serialization support on .NET * Remove obsolete serialization support on .NET (part 2)	2024-05-03 07:36:19 +01:00
Jason Nelson	7f42a8d60c	Reduce Allocations (#821) ... * Introduce ValueStringBuilder * Make NumericTokenizer and PlanTextTokenizer thread-safe * Replace ListPool with ArrayPoolBufferWriter * Seal ITokenizer classes * Eliminate array allocation in Type1ArrayTokenizer * Eliminate array allocation in AcroFormFactory * Eliminate StringBuilder allocation in Page.GetText * Optimize PdfSubpath.ToLines * Eliminate various allocations when parsing CompactFontFormat * Remove unused FromOctalInt helper * Ensure Pdf.Content is not null * Write ASCII values directly to stream (avoiding allocations) * Avoid encoding additional ASCII values * Eliminate allocations in TokenWriter.WriteName * Eliminate allocation in TokenWriter.WriteNumber * Add System.Memory reference to Fonts	2024-04-28 18:55:58 +01:00
Jason Nelson	1ef2e127a6	Improve Code Quality (#818) ... * Make AdobeFontMetricsLigature a struct * Make AdobeFontMetricsCharacterSize a struct * Eliminate allocation in CompactFontFormatData * Pass TransformationMatrix by reference * Seal Encoding classes * Make SubTableHeaderEntry a readonly struct * Introduce StringSplitter and eliminate various allocations in GlyphListFactory * Eliminate a few substring allocations * Use char overload on StringBuilder * Eliminate virtual calls on stringIndex * Optimize ReadHelper ReadLong and ReadInt methods * Add additional readonly annotations to PdfRectangle * Optimize NameTokenizer * Eliminate allocation in TrueTypeGlyphTableSubsetter * Use empty arrays * Eliminate allocations in OperationWriteHelper.WriteHex * Use simplified DecryptCbc method on .NET 6+ * Fix windows-1252 encoding not working on net6.0 and 8.0 * Update int buffers to exact unsigned max length and eliminate additional byte allocation * Fix typo * Remove unused constant	2024-04-18 19:58:40 +01:00
Jason Nelson	f62929eb7c	Spanify work 1 (#812) ... * Add GetString(ReadOnlySpan<byte>) polyfill * Add ArrayPoolBufferWriter * Use Utf8.IsValid & char.IsAsciiHexDigit on NET8.0+ * Optimize HexTokenizer * Eliminate various Tuple allocations * Eliminate List allocation in CrossReferenceTable * Eliminate various allocations in Ascii85Filter * Spanify HexToken * Spanify Palette * Spanify various Cmap & font methods * Spanify Type1Charstring classes * Spanify PdfDocEncoding.TryConvertBytesToString * Spanify OctalHelpers.FromOctalDigits * Add missing braces * React to HexToken.Byte type changes * Cleanup * [Tests] React to span changes * Add ArgumentNullException check back to Type1CharstringDecryptedBytes * Remove unsafe code * Seal HexToken * Avoid allocation when passing an empty span	2024-04-01 09:18:01 +01:00
Eliot Jones	f1be6634a7	add a bunch more performance improvements ... filter provider becomes single instance and no longer has constructor parameters. tokenizers use list and stringbuilder pools to reduce allocations. system font finder becomes static to preserve file cache across all documents.	2020-04-05 15:34:47 +01:00
Eliot Jones	bbde38f656	move tokenizers to their own project ... since both pdfs and Adobe Type1 fonts use postscript type objects, tokenization is needed by the main project and the fonts project	2020-01-05 10:40:44 +00:00