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integrate branch parsing into single system call

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The `git status --porcelain` command can take an additional argument
`-b` which causes the porcelain output to also contain branch
information in a stable and supposedly nonchanging way.

This change adds that argument to the initial `git status` call, and
parses the branch/ahead/behind information from that.  The end result is
the entire call to `git branch -v` can be removed, resulting in one less
subshell command and hopefully a more reliable target across future
versions of git.
This commit is contained in:
Matthew Rothenberg
2014-10-15 02:41:21 -04:00
parent 885cc6fc12
commit 23e99709da
1 changed files with 8 additions and 7 deletions
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13
lib/git/status_shortcuts.rb
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@@ -22,14 +22,15 @@
@project_root = File.exist?(".git") ? Dir.pwd : `\git rev-parse --show-toplevel 2> /dev/null`.strip
@git_status = `\git status --porcelain 2> /dev/null`
@git_status = `\git status --porcelain -b 2> /dev/null`
git_branch = `\git branch -v 2> /dev/null`
@branch = git_branch[/^\* (\(no branch\)|[^ ]*)/, 1]
@ahead = git_branch[/^\* [^ ]* *[^ ]* *\[ahead ?(\d+).*\]/, 1]
@behind = git_branch[/^\* [^ ]* *[^ ]* *\[.*behind ?(\d+)\]/, 1]
git_status_lines = @git_status.split("\n")
git_branch = git_status_lines[0]
@branch = git_branch[/^## (?:Initial commit on )?([^ \.]+)/, 1]
@ahead = git_branch[/\[ahead ?(\d+).*\]/, 1]
@behind = git_branch[/\[.*behind ?(\d+)\]/, 1]
@changes = @git_status.split("\n")
@changes = git_status_lines[1..-1]
# Exit if too many changes
exit if @changes.size > ENV["gs_max_changes"].to_i