Add Utkarsh Sharma's GSOC report

Author: Utkarsh1308

Diff for: _reports/Utkarsh1308.md

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+---
+categories:
+  - GSoC
+  - 2019
+  - StatusReport
+date: 2019-08-25
+student: Utkarsh Sharma
+organisation: coala
+organisation_link : https://coala.io
+project: Improve Diff Handling
+project_link: https://summerofcode.withgoogle.com/projects/#6443787042160640
+tarball: https://github.com/Utkarsh1308/Utkarsh1308.github.io/raw/master/Utkarsh1308_coala.tar.gz
+sha256sum: b9bd88b4f76c89fed8809c29f1733dd458a3fe5df12a4d024899b5d1e69883fa
+mentors: >
+ [John Vandenberg](https://github.com/jayvdb)
+phase:
+ - Bonding : https://gitlab.com/coala/GSoC/gsoc-2019/-/milestones/26
+ - Phase 1 : https://gitlab.com/coala/GSoC/gsoc-2019/-/milestones/29
+ - Phase 2 : https://gitlab.com/coala/GSoC/gsoc-2019/-/milestones/30
+ - Phase 3 : https://gitlab.com/coala/GSoC/gsoc-2019/-/milestones/31
+bio: >
+ I'm a fourth year student (expected graduation date: May 2021) at Birla Institute of Technology and Science, Goa. I participated in GSoC and worked with [coala](http://coala.io) on improving Diff Handling, by improving the context for the affected code shown by diffs, and added support for non utf-8 encodings in coala. I also added support for Binary Diffs and XML Diffs.
+
+social:
+ - GitHub:
+   - username: Utkarsh1308
+   - link: https://github.com/Utkarsh1308
+ - GitLab:
+   - username: Utkarsh1308
+   - link: https://gitlab.com/Utkarsh1308
+ - Gitter:
+   - username: Utkarsh1308
+   - link: https://gitter.im/Utkarsh1308
+ - LinkedIn:
+   - username: Utkarsh Sharma
+   - link: https://www.linkedin.com/in/utkarsh-sharma-375159178/
+email: [email protected]
+blog: https://utkarsh1308.github.io/
+activity:
+ - 0:
+   - repo: cEPs
+   - link: https://github.com/coala/cEPs/pull/190
+   - details: >
+      cEP-0034: Improve Diff Handling
+ - 1:
+   - repo: multidiff
+   - link: https://github.com/juhakivekas/multidiff/commit/8d2cd0f0f119932236fe2826891f1a2d4df7d5a8
+   - details: >
+      Add .travis.yml
+ - 2:
+   - repo: multidiff
+   - link: https://github.com/juhakivekas/multidiff/commit/0019fd70a7bea6bdbe6cb9f3ad8b4e63f4b3d5ed
+   - details: >
+      Add width and bytes attribute
+ - 3:
+   - repo: multidiff
+   - link: https://github.com/juhakivekas/multidiff/commit/10ca2ad90ce1e5087c0222015ef68bc06ecca211
+   - details: >
+      Add diff attribute
+ - 4:
+   - repo: coala-utils
+   - link: https://gitlab.com/coala/coala-utils/commit/74941151ff97b02db554dfc33c7518cfd5644e5b
+   - details: >
+      FileUtils.py: Fix detect_encoding
+ - 5:
+   - repo: coala-utils
+   - link: https://gitlab.com/coala/coala-utils/commit/9f45ae47fdd37de06f7f39d7a33160169606ade5
+   - details: >
+      Add support for non utf-8 encodings
+ - 6:
+   - repo: coala
+   - link: https://github.com/coala/coala/commit/6cdd9e99444688a2777b5ec0358b52bcea3c58ff
+   - details: >
+      ConsoleInteraction.py: Show context for diffs
+ - 7:
+   - repo: coala
+   - link: https://github.com/coala/coala/commit/5085b41fd973dd29969f16dbdff5f8eef7e4fedd
+   - details: >
+      ConsoleInteraction.py: Add parents to syntax tree
+ - 8:
+   - repo: coala
+   - link: https://github.com/coala/coala/commit/b415eeab1650d21e5eeaac5673ac717637962f72
+   - details: >
+      Add support for non utf-8 encodings
+ - 9:
+   - repo: coala
+   - link: https://github.com/coala/coala/commit/39709cc9cfda3f7c976e2e58b67eb82b30b5c0d1
+   - details: >
+      Add support for binary diffs
+ - 10:
+   - repo: coala
+   - link: https://github.com/coala/coala/commit/9a1cb1b6e19bf963ef75b7c95df35a92383da5f0
+   - details: >
+      Add support for xml diffs
+
+---
+
+### Improve Diff Handling
+
+
+#### Work Done
+
+1. Writing tests for non utf-8 encodings in both coala and coala-utils. and
+adding support for non utf-8 encodings to coala.
+
+2. Improvements to the diff contexts shown by coala by showing lines before
+and after the affected code and showing the parents (class/function).
+
+3. Add Support for Showing diffs for binary files. Tested with
+ImageCompressionBear.
+
+4. Support for xml diffs. Tested with XMLBear.
+
+#### Challenges
+
+Adding support for binary and xml diffs was quite complex which I was not
+prepared for beforehand. So I had to come up with designs for these new
+types of diffs and how to print them with coala. This required finding the
+right libraries for generating diffs for binary and xml files and using them
+in coala.
+
+I learned many new concepts along the way. My mentor guided me whenever I got
+stuck at a problem and was really influential in the work I have done these
+three months.
+
+#### Work to be done
+
+The binary and xml diffs have a lot of scope for further improvement.
+
+1. We can show stats for binary diffs. So the diffs will show the additions
+and deletions in the diff and only print the binary diff when ShowAppliedPatches
+is called.
+
+2. XML Diffs need to be tested with bears which change data so they could be
+viewed in all their glory. Some new bears for XML can be written which
+can cause changes in xml documents.
+
+3. Writing tests for the new binary and xml diffs.