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diff --git a/unipdf/ACKNOWLEDGEMENTS.md b/unipdf/ACKNOWLEDGEMENTS.md new file mode 100644 index 0000000..afc5ebe --- /dev/null +++ b/unipdf/ACKNOWLEDGEMENTS.md @@ -0,0 +1,324 @@ +Acknowledgements +---------------- + +The UniDoc library uses resources from the following open source projects: + +* [The standard Go library](https://golang.org/pkg/#stdlib), +and [Go supplementary image libraries](https://godoc.org/golang.org/x/image/tiff/lzw), BSD-3 license: + - Used for TIFF LZW encoding support. + - PNG paeth algorithm + +``` +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +``` + + +* [fpdf - Kurt Jung](https://github.com/jung-kurt/gofpdf), MIT license. + + - Used for TrueType (TTF) font file parsing (unidoc/pdf/model/fonts/ttfparser.go). +``` +MIT License + +Copyright (c) 2017 Kurt Jung and contributors acknowledged in the documentation + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +``` + +* [Adobe Font Metrics PDF Core 14 fonts](http://www.adobe.com/devnet/font.html), with the following license: +``` +This file and the 14 PostScript(R) AFM files it accompanies may be used, +copied, and distributed for any purpose and without charge, with or without +modification, provided that all copyright notices are retained; that the +AFM files are not distributed without this file; that all modifications +to this file or any of the AFM files are prominently noted in the modified +file(s); and that this paragraph is not modified. Adobe Systems has no +responsibility or obligation to support the use of the AFM files. +``` + + - Used for support of the 14 core fonts (see unidoc/pdf/model/fonts/afms). + +* [Adobe Glyph List](https://github.com/adobe-type-tools/agl-aglfn), BSD-3 license. + - Used for glyph and textencoding support (see unidoc/pdf/model/textencoding/glyphlist). + +``` +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. + +Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + +Neither the name of Adobe Systems Incorporated nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +``` + +* [Apache Java PDFBox JBIG2 Decoder](https://github.com/apache/pdfbox-jbig2), Apache License 2.0. + In order to achieve full support for the JBIG2 Decoder, it was necessary to implement all possible decoding + combinations defined in the JBIG2 standard, aka ITU T.88 and ISO/IEC 14492. + With a lack of Golang JBIG2 Open Source package, we’ve decided that it would be best to base our own implementation + on some solid and reliable library. + The Apache PDFBox JBIG2 library fulfilled all our requirements. It has a really good quality of the code along with + the detailed comments on each function and class. It also implemented MMR, Huffman tables and arithmetic + decompressors along with all JBIG2 segments. + +* [AGL JBIG2 Encoder](https://github.com/agl/jbig2enc), Apache License 2.0. + The complexity and lack of comprehensive documentation for the JBIG2 encoding process, lead us to look at the + AGL JBIG2 Encoder library. At the moment of implementing our encoder it was the only Open Source JBIG2 encoder. + It’s a C++ based library that implements both lossless and lossy encoding methods, where most of the image + operations are done using DanBloomberg Leptonica library. + + The core encoding processes in the UniPDF JBIG2 Encoder were based on that well documented and solid library + + +* [DanBloomberg Leptonica](https://github.com/DanBloomberg/leptonica), The 2-Clause BSD License, + DanBloomberg Leptonica is an amazing C/C++ Open Source library. It provides raster operations, binary expansion and + reduction, JBIG2 component creators, correlation scoring and a lot more perfectly commented image operation functions. + That library was used as a very solid base for our image operation algorithms used by the JBIG2 Encoder. + +* [sRGB2014 - Color Profile](http://www.color.org/srgbprofiles.xalter), Copyright International Color Consortium, 2015 + This profile is made available by the International Color Consortium, and may be copied, + distributed, embedded, made, used, and sold without restriction. Altered versions of this + profile shall have the original identification and copyright information removed and + shall not be misrepresented as the original profile. + +* [sRGB v4 ICC preference - Color Profile](http://www.color.org/srgbprofiles.xalter), Copyright 2007 International Color Consortium + This profile is made available by the International Color Consortium, and may be copied, + distributed, embedded, made, used, and sold without restriction. Altered versions of this + profile shall have the original identification and copyright information removed and + shall not be misrepresented as the original profile. + +* [ISO Coated v2 Grey1c bas - Color Profile](https://www.colormanagement.org/en/isoprofile2009.html#ISOcoated_v2_grey1c_bas), + Copyright (c) 2007, basICColor GmbH + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must + not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must + not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. + +* [ISO Coated v2 300 bas - Color Profile](https://www.colormanagement.org/en/isoprofile2009.html#ISOcoated_v2_300_bas), + Copyright (c) 2007-2010, basICColor GmbH + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must + not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must + not be + misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. + +* [Go-XMP Native SDK](https://github.com/trimmer-io/go-xmp), Copyright 2017 Alexander Eichhorn + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 + + The native Go-XMP SDK was used as a core of the XMP utilities in the package + `github.com/unidoc/unipdf/model/xmputil`. + +* [CCITTFax Decoder](https://github.com/haraldk/TwelveMonkeys/blob/master/imageio/imageio-tiff/src/main/java/com/twelvemonkeys/imageio/plugins/tiff/CCITTFaxDecoderStream.java), Copyright (c) 2008-2020, Harald Kuhr + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + o Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + + o Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + o Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + UniPDF architectural concept of ccittfax decoder was based on the Java implementation defined in the https://github.com/haraldk/TwelveMonkeys. + +* [i18n/linebreak](https://github.com/gorilla/i18n), BSD-3 license: + - Used for word line break. + +``` +Copyright (c) 2013, Gorilla web toolkit +All rights reserved. + +Redistribution and use in source and binary forms, with or without modification, +are permitted provided that the following conditions are met: + + Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + + Redistributions in binary form must reproduce the above copyright notice, this + list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + + Neither the name of the {organization} nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +``` + +* [Bidi implementation of pdf.js](https://github.com/mozilla/pdf.js/blob/master/src/core/bidi.js), Apache License, Version 2.0: + + - Used to process Bidirectional text extraction. +``` + +Copyright 2012 Mozilla Foundation + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +``` + +* [PKCS#12 implementation](https://github.com/SSLMate/go-pkcs12), BSD 3-Clause "New" or "Revised" License: + +``` + +Copyright (c) 2015, 2018, 2019 Opsmate, Inc. All rights reserved. +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +```
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