Fabian
a3dc7b3f48
hondacrx: - Initial commit: Switch to .Net Core 2.0 - Fix build and removed not needed files Fabi: - Updated solution platforms. - Changed folder structure. - Change library target framework to netstandard2.0. - Updated solution platforms again... - Removed windows specific kernel32 function usage (Ctrl-C handler).
106 lines
3.7 KiB
C#
106 lines
3.7 KiB
C#
// zutil.cs -- target dependent utility functions for the compression library
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// Copyright (C) 1995-2005, 2010 Jean-loup Gailly.
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// Copyright (C) 2007-2011 by the Authors
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// For conditions of distribution and use, see copyright notice in License.txt
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using System;
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namespace Framework.IO
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{
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public static partial class ZLib
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{
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private const int OS_CODE=0x0b;
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static readonly string[] z_errmsg=new string[9]
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{
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"need dictionary", // Z_NEED_DICT 2
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"stream end", // Z_STREAM_END 1
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"", // Z_OK 0
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"file error", // Z_ERRNO -1
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"stream error", // Z_STREAM_ERROR -2
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"data error", // Z_DATA_ERROR -3
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"insufficient memory", // Z_MEM_ERROR -4
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"buffer error", // Z_BUF_ERROR -5
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"incompatible version" // Z_VERSION_ERROR -6
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};
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// =========================================================================
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// The application can compare zlibVersion and ZLIB_VERSION for consistency.
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// If the first character differs, the library code actually used is
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// not compatible with the zlib.h header file used by the application.
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// This check is automatically made by deflateInit and inflateInit.
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public static string zlibVersion()
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{
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return ZLIB_VERSION;
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}
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// =========================================================================
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// Return flags indicating compile-time options.
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//
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// Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
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// 1.0: size of ulong
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// 3.2: size of uint
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// 5.4: size of void* (pointer)
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// 7.6: size of int
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//
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//Compiler, assembler, and debug options:
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// (8: DEBUG)
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// (9: ASMV or ASMINF -- use ASM code [not used in this port])
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// (10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention [not used in this port])
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// 11: 0 (reserved)
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//
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//One-time table building (smaller code, but not thread-safe if true):
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// (12: BUILDFIXED -- build static block decoding tables when needed [not used in this port])
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// (13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed [not used in this port])
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// 14,15: 0 (reserved)
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//
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//Library content (indicates missing functionality):
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// 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking deflate code when not needed)
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// 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect and decode gzip streams (to avoid linking crc code)
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// 18-19: 0 (reserved)
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//
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//Operation variations (changes in library functionality):
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// (20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate [not used in this port])
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// (21: FASTEST -- deflate algorithm with only one, lowest compression level [not used in this port])
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// 22,23: 0 (reserved)
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//
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//The sprintf variant used by gzprintf (zero is best):
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// (24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format [not used in this port])
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// (25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure! [not used in this port])
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// (26: 0 = returns value, 1 = void -- 1 means inferred string length returned [not used in this port])
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//
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//Remainder:
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// 27-31: 0 (reserved)
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public static uint zlibCompileFlags()
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{
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uint flags=2;
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flags+=1<<2;
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switch(IntPtr.Size)
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{
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case 4: flags+=1<<4; break;
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case 8: flags+=2<<4; break;
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default: flags+=3<<4; break;
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}
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flags+=1<<6;
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return flags;
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}
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// =========================================================================
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// exported to allow conversion of error code to string for compress() and uncompress()
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public static string zError(int err)
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{
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if(err<-6||err>2) throw new ArgumentOutOfRangeException("err", "must be -6<=err<=2");
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return z_errmsg[2-err];
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}
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}
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}
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