Create gen-changelog.sh

gen-changelog.sh

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+#!/bin/bash
+
+# This CHANGELOG script was originally based of the work of Andrey Nikishaev and Gunnar Lindholm from this post:
+# http://stackoverflow.com/questions/7387612/git-changelog-how-to-get-all-changes-up-to-a-specific-tag
+
+# This script is geared towards OSX and you will need GTAC installed.
+# `brew install coreutils`
+
+# The placeholders are:
+
+# %H: commit hash
+# %h: abbreviated commit hash
+# %T: tree hash
+# %t: abbreviated tree hash
+# %P: parent hashes
+# %p: abbreviated parent hashes
+# %an: author name
+# %aN: author name (respecting .mailmap)
+# %ae: author email
+# %aE: author email (respecting .mailmap)
+# %ad: author date (format respects --date= option)
+# %aD: author date, RFC2822 style
+# %ar: author date, relative
+# %at: author date, UNIX timestamp
+# %ai: author date, ISO 8601 format
+# %cn: committer name
+# %cN: committer name (respecting .mailmap)
+# %ce: committer email
+# %cE: committer email (respecting .mailmap)
+# %cd: committer date
+# %cD: committer date, RFC2822 style
+# %cr: committer date, relative
+# %ct: committer date, UNIX timestamp
+# %ci: committer date, ISO 8601 format
+# %d: ref names, like the --decorate option of git-log(1)
+# %e: encoding
+# %s: subject
+# %f: sanitized subject line, suitable for a filename
+# %b: body
+# %B: raw body (unwrapped subject and body)
+# %N: commit notes
+# %gD: reflog selector, e.g., refs/stash@{1}
+# %gd: shortened reflog selector, e.g., stash@{1}
+# %gn: reflog identity name
+# %gN: reflog identity name (respecting .mailmap)
+# %ge: reflog identity email
+# %gE: reflog identity email (respecting .mailmap)
+# %gs: reflog subject
+
+repo_url="http://github.com/kandanapp/kandan/commit/"
+
+echo "CHANGELOG"
+echo "========="
+git for-each-ref --sort='*authordate' --format='%(tag)' refs/tags |gtac |grep -v '^$' | while read TAG ; do
+      echo
+    if [ $NEXT ];then
+        echo "#### [$NEXT]"
+    else
+    	echo "#### [Current]"
+    fi
+    GIT_PAGER=cat git log --pretty=format:" * [%h]($repo_url%h) %s __(%an)__" $TAG..$NEXT
+    NEXT=$TAG
+done
+echo ""
+FIRST=$(git tag -l | head -1)
+echo ""
+
+echo "#### [$FIRST]"
+
+GIT_PAGER=cat git log --pretty=format:" * [%h]($repo_url%h) %s __(%an)__" $FIRST