github.com/cockroachdb/tools@v0.0.0-20230222021103-a6d27438930d/internal/diff/lcs/git.sh (about)

     1  #!/bin/bash
     2  #
     3  # Copyright 2022 The Go Authors. All rights reserved.
     4  # Use of this source code is governed by a BSD-style
     5  # license that can be found in the LICENSE file.
     6  #
     7  # Creates a zip file containing all numbered versions
     8  # of the commit history of a large source file, for use
     9  # as input data for the tests of the diff algorithm.
    10  #
    11  # Run script from root of the x/tools repo.
    12  
    13  set -eu
    14  
    15  # WARNING: This script will install the latest version of $file
    16  # The largest real source file in the x/tools repo.
    17  # file=internal/lsp/source/completion/completion.go
    18  # file=internal/lsp/source/diagnostics.go
    19  file=internal/lsp/protocol/tsprotocol.go
    20  
    21  tmp=$(mktemp -d)
    22  git log $file |
    23    awk '/^commit / {print $2}' |
    24    nl -ba -nrz |
    25    while read n hash; do
    26      git checkout --quiet $hash $file
    27      cp -f $file $tmp/$n
    28    done
    29  (cd $tmp && zip -q - *) > testdata.zip
    30  rm -fr $tmp
    31  git restore --staged $file
    32  git restore $file
    33  echo "Created testdata.zip"