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version](https://img.shields.io/github/release/justinfx/gofileseq.svg)](https://badge.fury.io/go/github.com%2Fjustinfx%2Fgofileseq) \n[![GoDoc](https://godoc.org/github.com/justinfx/gofileseq?status.svg)](https://godoc.org/github.com/justinfx/gofileseq)\n[![Build](https://github.com/justinfx/gofileseq/workflows/Build%20and%20Deploy/badge.svg)](https://github.com/justinfx/gofileseq/actions?query=workflow%3A%22Build+and+Deploy%22)\n[![Go Report](https://goreportcard.com/badge/github.com/justinfx/gofileseq)](https://goreportcard.com/report/github.com/justinfx/gofileseq)\n\n\nA Go language library for parsing file sequence strings commonly\nused in VFX and animation applications.\n\nPorted from the original fileseq Python library:\nhttps://github.com/justinfx/fileseq\n\nFor C++, see [C++ Support](#c-support)\n\nFrame Range Shorthand\n---------------------\n\nSupport for:\n\n* Standard: 1-10\n* Comma Delimted: 1-10,10-20\n* Chunked: 1-100x5\n* Filled: 1-100y5\n* Staggered: 1-100:3 (1-100x3, 1-100x2, 1-100)\n* Negative frame numbers: -10-100\n* Padding: #=4 padded, @=single pad\n* Printf Syntax Padding: %04d=4 padded, %01d=1 padded\n* Houdini Syntax Padding: $F4=4 padding, $F=1 padded\n* Udim Syntax Padding: \u003cUDIM\u003e or %(UDIM)d, always 4 padded\n\t\nSequence Formats\n----------------\n\nSequences of files are expected to follow a pattern similar to:\n\n* /path/to/some/file_foo.0100.exr\n* /path/to/some/file_foo.1-100#.jpg\n* /path/to/some/file_foo.1-100@@@.tif\n* /path/to/some/file_foo.1-100%03d.tif\n* /path/to/some/file_foo.1-100$F3.tif\n* /path/to/some/file_foo.1-100\u003cUDIM\u003e.tif\n* /path/to/some/file_foo.1-100%(UDIM)d.tif\n\nInstall\n-------\n\n```bash\ngo get github.com/justinfx/gofileseq/v3\n```\n\nAlso included is a [`seqls`](https://github.com/justinfx/gofileseq/tree/master/cmd/seqls) tool, which uses `gofileseq` to produce an executable, used for listing sequences on the filesystem:\n\nAnd [`seqinfo`](https://github.com/justinfx/gofileseq/tree/master/cmd/seqinfo) tool, which can print plain-text or json parsed information about one or more sequence strings.\n\nDownload the latest [binary release](https://github.com/justinfx/gofileseq/releases/latest)\n\nOr install from source:\n```bash\ngo get github.com/justinfx/gofileseq/v3/cmd/seqls\nseql some/images\n# some/images/file_foo.1-100@@@.tif\n```\n\nDevelopment\n-----------\n\nThe file sequence parser is built using an [ANTLR4](https://www.antlr.org/) grammar defined in `grammar/fileseq.g4`.\n\nWhen the grammar file is modified, the parser must be regenerated and committed:\n\n```bash\n# Regenerate parser from grammar\ngo generate ./...\n\n# Or directly via make\ncd grammar \u0026\u0026 make generate-go\n```\n\n**Requirements:** Java runtime (for ANTLR code generation)\n\nIf Java is not in a default system location, specify the path:\n```bash\n# Using go generate\nJAVA=/path/to/java go generate ./...\n\n# Using make 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