Move in some generation scripts

Author: cirosantilli

other-test-repos/.gitignore

@@ -0,0 +1,2 @@
+/clone/
+/repo/

other-test-repos/README.md

@@ -1,4 +1,6 @@
-# Other tests
+# Other test repositories
+
+Scripts in this directory can be used to generate the more complex test repositories.
 
 Tests that are very large will not be included here to keep this repository small:
 
@@ -18,7 +20,7 @@ There are also some tests that could not be included here conveniently:
 - <https://github.com/cirosantilli/test-long-filename-256>
 - <https://github.com/cirosantilli/test-min-sane>
 - <https://github.com/cirosantilli/test-refs-api-tags-pulls-block>
-- <https://github.com/cirosantilli/test-streak>, <https://github.com/cirosantilli/test-streak-1000>
+- <https://github.com/cirosantilli/test-streak>, <https://github.com/cirosantilli/test-streak-1000>, [streak.py](streak.py), <http://stackoverflow.com/questions/20099235/who-is-the-user-with-the-longest-streak-on-github/27742165#27742165>
 - <https://github.com/cirosantilli/test-submodule-contributing>
 - <https://github.com/cirosantilli/test-symlink-contributing>
 - <https://github.com/cirosantilli/test-symlink-middle-null>

other-test-repos/commit-meta.bashrc

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+# Fixed commit metadata.
+date='2000-01-01T00:00:00+0000'
+email='[email protected]'
+name='a'
+export GIT_COMMITTER_EMAIL="$email"
+export GIT_COMMITTER_NAME="$name"
+export GIT_COMMITTER_DATE="$date"
+export GIT_AUTHOR_EMAIL="$email"
+export GIT_AUTHOR_NAME="$name"
+export GIT_AUTHOR_DATE="$date"

other-test-repos/duplicate-parent.sh

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+#!/usr/bin/env bash
+
+set -e
+
+# Try to create a commit with two times it's parent with git-commit-tree
+# Outcome on Git 2.7: commit fails. Will try again with raw object creation from Python later on.
+
+. commit-meta.bashrc
+. init.bashrc
+
+# Directory parameters.
+blob_content=''
+blob_name='a'
+blob_mode='100644'
+dir_name='directory'
+
+# Blob.
+blob_sha="$(printf "$blob_content" | git hash-object --stdin -w)"
+
+# Tree.
+tree_sha="$(printf "\
+$blob_mode blob $blob_sha\t$blob_name
+" | git mktree)"
+
+# Commit 1.
+commit_sha="$( \
+  git commit-tree -m 0 "$tree_sha")"
+git branch master "$commit_sha"
+
+# Commit 2 that has the duplicate parent.
+commit_sha="$(git commit-tree -m 1 -p "$commit_sha" -p "$commit_sha" "$tree_sha")"
+git update-ref master "$commit_sha"

other-test-repos/finish-bare.bashrc

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+git clone -q repo clone

other-test-repos/init.bashrc

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+rm -rf repo clone
+mkdir -p repo
+cd repo
+git init -q

other-test-repos/manual-sha-calculation.py

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+#!/usr/bin/env python3
+
+import datetime
+import os
+
+date0 = datetime.date(2000, 1, 1)
+datef = datetime.date(2100, 1, 1)
+date = date0
+while date < datef:
+    s = date.strftime("%Y-%m-%dT01:00:00")
+    cmd = 'GIT_COMMITTER_DATE="{0}" git commit --allow-empty --allow-empty-message -m "" --date="{0}"'.format(s)
+    print cmd
+    os.system(cmd)
+    date += datetime.timedelta(days=1)

other-test-repos/manual-sha-calculation.sh

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+#!/usr/bin/env bash
+
+set -e
+
+# This was an attempt to calculate SHAs manually.
+# It stopped halfway because Bash cannot store NUL characters in variables,
+# so we had to move to Python.
+
+. commit-meta.bashrc
+. init.bashrc
+
+# Directory parameters.
+blob_content='blob content'
+blob_name='file'
+blob_mode='100644'
+dir_name='directory'
+
+strlen() {
+  printf "$1" | wc -c
+}
+
+sha_calc() {
+  type="$1"
+  content="$2"
+  printf "${type} $(strlen "$content")\0${content}" | sha1sum
+}
+
+# Blob.
+blob_sha="$(printf "$blob_content" | git hash-object --stdin -w)"
+echo "$blob_sha"
+echo "$(sha_calc "blob"  "$blob_content")"
+echo
+
+# Tree 1.
+sub_tree_sha="$(printf "\
+$blob_mode blob $blob_sha\t$blob_name
+" | git mktree)"
+echo "$sub_tree_sha"
+# TODO the problem here is the null character
+# which is impossible for bash to put into a variable.
+echo "$(sha_calc "tree" "${blob_mode} ${blob_name}\0${blob_sha}")"
+echo
+
+# Tree 2.
+root_tree="$(printf "\
+040000 tree $sub_tree_sha\t$dir_name
+100644 blob $blob_sha\t$blob_name
+" | git mktree)"
+
+commit="$(git commit-tree -m 0 "$root_tree")"
+git branch master "$commit"
+
+# Modify the master branch
+root_tree="$((
+git ls-tree HEAD:./
+printf "\
+100644 blob $blob_sha\tb
+") | git mktree)"
+
+commit="$(git commit-tree -m 1 -p "$(git rev-parse HEAD)" "$root_tree")"
+# Bare
+git update-ref master "$commit"

other-test-repos/streak.py

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+#!/usr/bin/env python3
+
+import datetime
+import os
+
+repo = 'repo'
+os.mkdir(repo)
+os.cwd(repo)
+
+date0 = datetime.date(2000, 1, 1)
+datef = datetime.date(2100, 1, 1)
+date = date0
+while date < datef:
+    s = date.strftime('%Y-%m-%dT01:00:00')
+    cmd = 'GIT_COMMITTER_DATE="{0}" git commit --allow-empty --allow-empty-message -m "" --date="{0}"'.format(s)
+    print(cmd)
+    os.system(cmd)
+    date += datetime.timedelta(days=1)