src/

5a is a version of the Plan 9 assembler.

5c is a version of the Plan 9 C compiler.

5g is the version of the gc compiler for the ARM.

5l is a modified version of the Plan 9 linker.

6a is a version of the Plan 9 assembler.

6c is a version of the Plan 9 C compiler.

6g is the version of the gc compiler for the x86-64.

6l is a modified version of the Plan 9 linker.

8a is a version of the Plan 9 assembler.

8c is a version of the Plan 9 C compiler.

8g is the version of the gc compiler for the x86.

8l is a modified version of the Plan 9 linker.

This directory contains the portable section of the Plan 9 C compilers.

Cov is a rudimentary code coverage tool.

Godefs is a bootstrapping tool for porting the Go runtime to new systems.

The gomake command runs GNU make with an appropriate environment for using the conventional Go makefiles.

Gopack is a variant of the Plan 9 ar tool.

This directory contains the portable section of the Plan 9 C linkers.

Nm is a version of the Plan 9 nm command.

Prof is a rudimentary real-time profiler.

Package tar implements access to tar archives.

Package zip provides support for reading and writing ZIP archives.

Package asn1 implements parsing of DER-encoded ASN.1 data structures, as defined in ITU-T Rec X.690.

Package big implements multi-precision arithmetic (big numbers).

Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O.

Package builtin provides documentation for Go's built-in functions.

Package bytes implements functions for the manipulation of byte slices.

Package cmath provides basic constants and mathematical functions for complex numbers.

Package bzip2 implements bzip2 decompression.

Package flate implements the DEFLATE compressed data format, described in RFC 1951.

Package gzip implements reading and writing of gzip format compressed files, as specified in RFC 1952.

Package lzw implements the Lempel-Ziv-Welch compressed data format, described in T. A. Welch, “A Technique for High-Performance Data Compression”, Computer, 17(6) (June 1984), pp 8-19.

Package zlib implements reading and writing of zlib format compressed data, as specified in RFC 1950.

Package heap provides heap operations for any type that implements heap.Interface.

Package list implements a doubly linked list.

Package ring implements operations on circular lists.

Package vector implements containers for managing sequences of elements.

Package crypto collects common cryptographic constants.

Package aes implements AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197.

Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.

Package cast5 implements CAST5, as defined in RFC 2144.

Package cipher implements standard block cipher modes that can be wrapped around low-level block cipher implementations.

Package des implements the Data Encryption Standard (DES) and the Triple Data Encryption Algorithm (TDEA) as defined in U.S. Federal Information Processing Standards Publication 46-3.

Package dsa implements the Digital Signature Algorithm, as defined in FIPS 186-3

Package ecdsa implements the Elliptic Curve Digital Signature Algorithm, as defined in FIPS 186-3.

Package elliptic implements several standard elliptic curves over prime fields.

Package hmac implements the Keyed-Hash Message Authentication Code (HMAC) as defined in U.S. Federal Information Processing Standards Publication 198.

Package md4 implements the MD4 hash algorithm as defined in RFC 1320.

Package md5 implements the MD5 hash algorithm as defined in RFC 1321.

Package ocsp parses OCSP responses as specified in RFC 2560.

Package openpgp implements high level operations on OpenPGP messages.

Package armor implements OpenPGP ASCII Armor, see RFC 4880.

Package elgamal implements ElGamal encryption, suitable for OpenPGP, as specified in "A Public-Key Cryptosystem and a Signature Scheme Based on Discrete Logarithms," IEEE Transactions on Information Theory, v.

Package error contains common error types for the OpenPGP packages.

Package packet implements parsing and serialization of OpenPGP packets, as specified in RFC 4880.

Package s2k implements the various OpenPGP string-to-key transforms as specified in RFC 4800 section 3.7.1.

Package rand implements a cryptographically secure pseudorandom number generator.

Package rc4 implements RC4 encryption, as defined in Bruce Schneier's Applied Cryptography.

Package ripemd160 implements the RIPEMD-160 hash algorithm.

Package rsa implements RSA encryption as specified in PKCS#1.

Package sha1 implements the SHA1 hash algorithm as defined in RFC 3174.

Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-2.

Package sha512 implements the SHA384 and SHA512 hash algorithms as defined in FIPS 180-2.

Package subtle implements functions that are often useful in cryptographic code but require careful thought to use correctly.

Package twofish implements Bruce Schneier's Twofish encryption algorithm.

Package x509 parses X.509-encoded keys and certificates.

Package pkix contains shared, low level structures used for ASN.1 parsing and serialization of X.509 certificates, CRL and OCSP.

Package xtea implements XTEA encryption, as defined in Needham and Wheeler's 1997 technical report, "Tea extensions."

Package csv reads and writes comma-separated values (CSV) files.

Package dwarf provides access to DWARF debugging information loaded from executable files, as defined in the DWARF 2.0 Standard at http://dwarfstd.org/doc/dwarf-2.0.0.pdf

Package elf implements access to ELF object files.

Package gosym implements access to the Go symbol and line number tables embedded in Go binaries generated by the gc compilers.

Package macho implements access to Mach-O object files, as defined by http://developer.apple.com/mac/library/documentation/DeveloperTools/Conceptual/MachORuntime/Reference/reference.html.

Package pe implements access to PE (Microsoft Windows Portable Executable) files.

Package ebnf is a library for EBNF grammars.

Package ascii85 implements the ascii85 data encoding as used in the btoa tool and Adobe's PostScript and PDF document formats.

Package base32 implements base32 encoding as specified by RFC 4648.

Package base64 implements base64 encoding as specified by RFC 4648.

Package binary implements translation between unsigned integer values and byte sequences and the reading and writing of fixed-size values.

Package git85 implements the radix 85 data encoding used in the Git version control system.

Package hex implements hexadecimal encoding and decoding.

Package pem implements the PEM data encoding, which originated in Privacy Enhanced Mail.

Package exec runs external commands.

Package datafmt implements syntax-directed, type-driven formatting of arbitrary data structures.

Package gui defines a basic graphical user interface programming model.

Package x11 implements an X11 backend for the exp/gui package.

Package regexp implements a simple regular expression library.

Package syntax parses regular expressions into syntax trees.

Package html is a specialization of template that automates the construction of safe HTML output.

Package expvar provides a standardized interface to public variables, such as operation counters in servers.

Package flag implements command-line flag parsing.

Package fmt implements formatted I/O with functions analogous to C's printf and scanf.

Package ast declares the types used to represent syntax trees for Go packages.

Package build provides tools for building Go packages.

Package doc extracts source code documentation from a Go AST.

Package parser implements a parser for Go source files.

Package printer implements printing of AST nodes.

Package scanner implements a scanner for Go source text.

Package token defines constants representing the lexical tokens of the Go programming language and basic operations on tokens (printing, predicates).

DEPRECATED PACKAGE - SEE go/types INSTEAD.

PACKAGE UNDER CONSTRUCTION.

Package hash provides interfaces for hash functions.

Package adler32 implements the Adler-32 checksum.

Package crc32 implements the 32-bit cyclic redundancy check, or CRC-32, checksum.

Package crc64 implements the 64-bit cyclic redundancy check, or CRC-64, checksum.

Package fnv implements FNV-1 and FNV-1a, non-cryptographic hash functions created by Glenn Fowler, Landon Curt Noll, and Phong Vo.

Package html implements an HTML5-compliant tokenizer and parser.

Package cgi implements CGI (Common Gateway Interface) as specified in RFC 3875.

Package fcgi implements the FastCGI protocol.

Package httptest provides utilities for HTTP testing.

Package pprof serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool.

Package image implements a basic 2-D image library.

Package bmp implements a BMP image decoder.

Package draw provides image composition functions in the style of the Plan 9 graphics library (see http://plan9.bell-labs.com/magic/man2html/2/draw) and the X Render extension.

Package gif implements a GIF image decoder.

Package jpeg implements a JPEG image decoder and encoder.

Package png implements a PNG image decoder and encoder.

Package tiff implements a TIFF image decoder.

Package ycbcr provides images from the Y'CbCr color model.

Package suffixarray implements substring search in logarithmic time using an in-memory suffix array.

Package io provides basic interfaces to I/O primitives.

Package ioutil implements some I/O utility functions.

Package json implements encoding and decoding of JSON objects as defined in RFC 4627.

Package log implements a simple logging package.

Package mail implements parsing of mail messages.

Package math provides basic constants and mathematical functions.

Package mime implements parts of the MIME spec.

Package multipart implements MIME multipart parsing, as defined in RFC 2046.

Package net provides a portable interface to Unix networks sockets, including TCP/IP, UDP, domain name resolution, and Unix domain sockets.

Package dict implements the Dictionary Server Protocol as defined in RFC 2229.

Package textproto implements generic support for text-based request/response protocols in the style of HTTP, NNTP, and SMTP.

Package netchan implements type-safe networked channels: it allows the two ends of a channel to appear on different computers connected by a network.

Package template implements data-driven templates for generating textual output such as HTML.

Package os provides a platform-independent interface to operating system functionality.

Package inotify implements a wrapper for the Linux inotify system.

Package signal implements operating system-independent signal handling.

Package user allows user account lookups by name or id.

Package patch implements parsing and execution of the textual and binary patch descriptions used by version control tools such as CVS, Git, Mercurial, and Subversion.

Package path implements utility routines for manipulating slash-separated filename paths.

Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.

Package rand implements pseudo-random number generators.

Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types.

Package regexp implements a simple regular expression library.

Package rpc provides access to the exported methods of an object across a network or other I/O connection.

Package jsonrpc implements a JSON-RPC ClientCodec and ServerCodec for the rpc package.

Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.

Package cgo contains runtime support for code generated by the cgo tool.

Package debug contains facilities for programs to debug themselves while they are running.

Package pprof writes runtime profiling data in the format expected by the pprof visualization tool.

Package scanner provides a scanner and tokenizer for UTF-8-encoded text.

Package smtp implements the Simple Mail Transfer Protocol as defined in RFC 5321.

Package sort provides primitives for sorting slices and user-defined collections.

Package strconv implements conversions to and from string representations of basic data types.

Package strings implements simple functions to manipulate strings.

Package sync provides basic synchronization primitives such as mutual exclusion locks.

Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms.

Package syscall contains an interface to the low-level operating system primitives.

Package syslog provides a simple interface to the system log service.

Package tabwriter implements a write filter (tabwriter.Writer) that translates tabbed columns in input into properly aligned text.

Package template implements data-driven templates for generating textual output such as HTML.

Package parse builds parse trees for templates.

Package testing provides support for automated testing of Go packages.

Package iotest implements Readers and Writers useful only for testing.

Package quick implements utility functions to help with black box testing.

Package script aids in the testing of code that uses channels.

Package time provides functionality for measuring and displaying time.

Package try contains the executable part of the gotry command.

Package unsafe contains operations that step around the type safety of Go programs.

Package URL parses URLs and implements query escaping.

Package utf16 implements encoding and decoding of UTF-16 sequences.

Package utf8 implements functions and constants to support text encoded in UTF-8.

Package websocket implements a client and server for the WebSocket protocol.

Package xml implements a simple XML 1.0 parser that understands XML name spaces.