mirror of https://github.com/captn3m0/Scripts.git
Adds git-sync
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#!/usr/bin/env bash
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#
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# git-sync
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#
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# sychronize tracking repositories
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#
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# 2012 by Simon Thum
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# Licensed as: CC0
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#
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# This scrips intends to sync via git near-automatically
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# in "tracking" repositories where a nice history is not
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# crucial as having one.
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#
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# Unlike the myriad of scripts to do just that already available,
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# it follows the KISS principle: It is small, requires nothing but
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# git and bash, but does not even try to shield you from git.
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#
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# Mode sync (default)
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#
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# Sync will likely get from you from a dull normal git repo with trivial
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# changes to an updated dull normal git repo equal to origin. No more,
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# no less. The intent is to do everything that's needed to sync
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# automatically, and resort to manual intervention as soon
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# as something non-trivial occurs. It is designed to be safe
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# in that it will likely refuse to do anything not known to
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# be safe.
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#
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# Mode check
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#
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# Check only performs the basic checks sync checks for to
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# make sure the repository is in a state sufficiently "normal"
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# to continue syncing, i.e. committing changes, pull etc. without
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# losing any data. When check returns 0, sync can start immediately.
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# This does not, however, indicate that syncing is at all likely to
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# succeed.
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# command used to auto-commit file modifications
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DEFAULT_AUTOCOMMIT_CMD="git add -u ; git commit -m \"%message\";"
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# command used to auto-commit all changes
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ALL_AUTOCOMMIT_CMD="git add -A ; git commit -m \"%message\";"
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# default commit message substituted into autocommit commands
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DEFAULT_AUTOCOMMIT_MSG="changes from $(uname -n) on $(date)"
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# AUTOCOMMIT_CMD="echo \"Please commit or stash pending changes\"; exit 1;"
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# TODO mode for stash push & pop
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#
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# utility functions, some adapted from git bash completion
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#
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# echo the git dir
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__gitdir()
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{
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if [ "true" = "$(git rev-parse --is-inside-work-tree)" ]; then
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git rev-parse --git-dir 2>/dev/null
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fi
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}
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# echos repo state
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git_repo_state ()
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{
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local g="$(__gitdir)"
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if [ -n "$g" ]; then
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if [ -f "$g/rebase-merge/interactive" ]; then
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echo "REBASE-i"
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elif [ -d "$g/rebase-merge" ]; then
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echo "REBASE-m"
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else
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if [ -d "$g/rebase-apply" ]; then
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echo "AM/REBASE"
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elif [ -f "$g/MERGE_HEAD" ]; then
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echo "MERGING"
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elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
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echo "CHERRY-PICKING"
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elif [ -f "$g/BISECT_LOG" ]; then
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echo "BISECTING"
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fi
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fi
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if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
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if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
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echo "|BARE"
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else
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echo "|GIT_DIR"
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fi
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elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then
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git diff --no-ext-diff --quiet --exit-code || echo "|DIRTY"
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# if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then
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# git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$"
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# fi
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#
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# if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ]; then
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# if [ -n "$(git ls-files --others --exclude-standard)" ]; then
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# u="%"
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# fi
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# fi
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#
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# if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
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# __git_ps1_show_upstream
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# fi
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fi
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else
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echo "NOGIT"
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fi
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}
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# check if we only have untouched, modified or (if configured) new files
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check_initial_file_state()
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{
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local syncNew="$(git config --get --bool branch.$branch_name.syncNewFiles)"
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if [ "true" == "$syncNew" ]; then
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# allow for new files
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if [ ! -z "$(git status --porcelain | grep -E '^[^ \?][^M\?] *')" ]; then
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echo "NonNewOrModified"
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fi
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else
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# also bail on new files
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if [ ! -z "$(git status --porcelain | grep -E '^[^ ][^M] *')" ]; then
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echo "NotOnlyModified"
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fi
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fi
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}
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# look for local changes
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# used to decide if autocommit should be invoked
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local_changes()
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{
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if [ ! -z "$(git status --porcelain | grep -E '^(\?\?|[MARC] |[ MARC][MD])*')" ]; then
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echo "LocalChanges"
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fi
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}
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# determine sync state of repository, i.e. how the remote relates to our HEAD
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sync_state()
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{
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local count="$(git rev-list --count --left-right $remote_name/$branch_name...HEAD)"
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case "$count" in
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"") # no upstream
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echo "noUpstream"
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false
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;;
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"0 0")
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echo "equal"
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true
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;;
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"0 "*)
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echo "ahead"
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true
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;;
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*" 0")
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echo "behind"
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true
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;;
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*)
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echo "diverged"
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true
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;;
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esac
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}
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# exit, issue warning if not in sync
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exit_assuming_sync() {
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if [ "equal" == "$(sync_state)" ] ; then
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echo "git-sync: In sync, all fine."
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exit 0;
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else
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echo "git-sync: Synchronization FAILED! You should definitely check your repository carefully!"
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echo "(Possibly a transient network problem? Please try again in that case.)"
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exit 3
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fi
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}
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#
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# Here git-sync actually starts
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#
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# first some sanity checks
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rstate="$(git_repo_state)"
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if [[ -z "$rstate" || "|DIRTY" = "$rstate" ]]; then
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echo "git-sync: Preparing. Repo in $(__gitdir)"
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elif [[ "NOGIT" = "$rstate" ]] ; then
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echo "git-sync: No git repository detected. Exiting."
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exit 128 # matches git's error code
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else
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echo "git-sync: Git repo state considered unsafe for sync: $(git_repo_state)"
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exit 2
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fi
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# determine the current branch (thanks to stackoverflow)
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branch_name=$(git symbolic-ref -q HEAD)
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branch_name=${branch_name##refs/heads/}
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if [ -z "$branch_name" ] ; then
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echo "git-sync: Syncing is only possible on a branch."
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git status
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exit 2
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fi
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# while at it, determine the remote to operate on
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remote_name=$(git config --get branch.$branch_name.remote)
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if [ -z "$remote_name" ] ; then
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echo "git-sync: the current branch does not have a configured remote."
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echo
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echo "git-sync: Please use"
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echo
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echo " git branch --set-upstream-to=[remote_name]/$branch_name"
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echo
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echo "replacing [remote_name] with the name of your remote, i.e. - origin"
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echo "to set the remote tracking branch for git-sync to work"
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exit 2
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fi
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# check if current branch is configured for sync
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if [ "true" != "$(git config --get --bool branch.$branch_name.sync)" ] ; then
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echo
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echo "git-sync: Please use"
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echo
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echo " git config --bool branch.$branch_name.sync true"
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echo
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echo "to whitelist branch $branch_name for synchronization."
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echo "Branch $branch_name has to have a same-named remote branch"
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echo "for git-sync to work."
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echo
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echo "(If you don't know what this means, you should change that"
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echo "before relying on this script. You have been warned.)"
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echo
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exit 1
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fi
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# determine mode
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if [[ -z "$1" || "$1" == "sync" ]]; then
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mode="sync"
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elif [[ "check" == "$1" ]]; then
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mode="check"
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else
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echo "git-sync: Mode $1 not recognized"
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exit 100
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fi
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echo "git-sync: Mode $mode"
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echo "git-sync: Using $remote_name/$branch_name"
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# check for intentionally unhandled file states
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if [ ! -z "$(check_initial_file_state)" ] ; then
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echo "git-sync: There are changed files you should probably handle manually."
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git status
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exit 1
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fi
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# if in check mode, this is all we need to know
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if [ $mode == "check" ] ; then
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echo "git-sync: check OK; sync may start."
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exit 0
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fi
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# check if we have to commit local changes, if yes, do so
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if [ ! -z "$(local_changes)" ]; then
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autocommit_cmd=""
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config_autocommit_cmd="$(git config --get branch.$branch_name.autocommitscript)"
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# discern the three ways to auto-commit
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if [ ! -z "$config_autocommit_cmd" ]; then
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autocommit_cmd="$config_autocommit_cmd"
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elif [ "true" == "$(git config --get --bool branch.$branch_name.syncNewFiles)" ]; then
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autocommit_cmd=${ALL_AUTOCOMMIT_CMD}
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else
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autocommit_cmd=${DEFAULT_AUTOCOMMIT_CMD}
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fi
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commit_msg="$(git config --get branch.$branch_name.syncCommitMsg)"
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if [ "" == "$commit_msg" ]; then
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commit_msg=${DEFAULT_AUTOCOMMIT_MSG}
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fi
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autocommit_cmd=$(echo "$autocommit_cmd" | sed "s/%message/$commit_msg/")
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echo "git-sync: Committing local changes using ${autocommit_cmd}"
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eval $autocommit_cmd
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# after autocommit, we should be clean
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rstate="$(git_repo_state)"
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if [[ ! -z "$rstate" ]]; then
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echo "git-sync: Auto-commit left uncommitted changes. Please add or remove them as desired and retry."
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exit 1
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fi
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fi
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# fetch remote to get to the current sync state
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# TODO make fetching/pushing optional
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echo "git-sync: Fetching from $remote_name/$branch_name"
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git fetch $remote_name $branch_name
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if [ $? != 0 ] ; then
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echo "git-sync: git fetch $remote_name returned non-zero. Likely a network problem; exiting."
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exit 3
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fi
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case "$(sync_state)" in
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"noUpstream")
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echo "git-sync: Strange state, you're on your own. Good luck."
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exit 2
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;;
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"equal")
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exit_assuming_sync
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;;
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"ahead")
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echo "git-sync: Pushing changes..."
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git push $remote_name $branch_name:$branch_name
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if [ $? == 0 ]; then
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exit_assuming_sync
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else
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echo "git-sync: git push returned non-zero. Likely a connection failure."
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exit 3
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fi
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;;
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"behind")
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echo "git-sync: We are behind, fast-forwarding..."
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git merge --ff --ff-only $remote_name/$branch_name
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if [ $? == 0 ]; then
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exit_assuming_sync
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else
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echo "git-sync: git merge --ff --ff-only returned non-zero ($?). Exiting."
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exit 2
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fi
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;;
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"diverged")
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echo "git-sync: We have diverged. Trying to rebase..."
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git rebase $remote_name/$branch_name
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if [[ $? == 0 && -z "$(git_repo_state)" && "ahead" == "$(sync_state)" ]] ; then
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echo "git-sync: Rebasing went fine, pushing..."
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git push $remote_name $branch_name:$branch_name
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exit_assuming_sync
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else
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echo "git-sync: Rebasing failed, likely there are conflicting changes. Resolve them and finish the rebase before repeating git-sync."
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exit 1
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fi
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# TODO: save master, if rebasing fails, make a branch of old master
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;;
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esac
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@ -0,0 +1,29 @@
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#!/bin/sh
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PATH=$PATH:/home/nemo/projects/scripts/
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function sync_repo() {
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pushd $1
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git config --bool branch.master.sync true
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git config --bool branch.master.syncNewFiles true
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git-sync
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popd
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}
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# xpad-notes
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sync_repo /home/nemo/.config/xpad yes
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# passwords
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sync_repo /home/nemo/.password-store
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CWD1=`pwd`
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# mobile-passwords
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cd /home/nemo/projects/personal/mobile-passwords
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./runme.sh
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sync_repo /home/nemo/projects/personal/mobile-passwords
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cd $CWD1
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# TODO:
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# scripts?: NO
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# imapfilter: YES
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# /etc: YES
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# dotfiles: NO
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