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Added git_files_changed function

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This patch adds the git library function for building a
short string that represents the output of git diff --numstat.
This gives theme designers the ability to add the
Number of files changed, number of lines added and number of
lines removed in their prompt for a git repository, while the user's
current working directory is in the git repo.

The new function supports prefix and suffix for each of the
options, files changed, lines added and lines removed.

To colorize the output, you can do something like this in your
theme file

ZSH_THEME_GIT_FILES_CHANGED_PREFIX="%{$fg[yellow]%}"
ZSH_THEME_GIT_FILES_CHANGED_SUFFIX="%{$reset_color%}"
ZSH_THEME_GIT_LINES_ADDED_PREFIX="%{$fg[green]%}"
ZSH_THEME_GIT_LINES_ADDED_SUFFIX="%{$reset_color%}"
ZSH_THEME_GIT_LINES_REMOVED_PREFIX="%{$fg[red]%}"
ZSH_THEME_GIT_LINES_REMOVED_SUFFIX="%{$fg[blue]%}"

For example, if there are
3 files changed, 10 lines added and no lines removed you will get
3f:10+

1 files changed, 20 lines added and 6 lines removed:
1f:20+:6-
This commit is contained in:
Hemna 2020-05-11 12:15:19 -04:00
parent d978f385e5
commit 0b8a9d1de2
1 changed files with 31 additions and 0 deletions
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31
lib/git.zsh
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@ -278,3 +278,34 @@ function git_repo_name() {
echo ${repo_path:t}
fi
}
# Outputs 3 stats for git repo
# 1) number of files changed,
# 2) the total number of lines added
# 3) total number of lines removed
#
# Example
# 3f:69+:6-
function git_files_changed() {
local -i files=0
local -i insertions=0
local -i deletions=0
local raw=$(command git diff --numstat 2>/dev/null) || return 0
if [[ -n $raw ]]; then
echo $raw | while IFS= read -r line; do
local -i d=$line[(w)2]
local -i i=$line[(w)1]
insertions+=i
deletions+=d
files+=1
done
local output="$ZSH_THEME_GIT_FILES_CHANGED_PREFIX${files}f$ZSH_THEME_GIT_FILES_CHANGED_SUFFIX"
if (( $insertions > 0 )); then
output="$output:$ZSH_THEME_GIT_LINES_ADDED_PREFIX${insertions}+$ZSH_THEME_GIT_LINES_ADDED_SUFFIX"
fi
if (( $deletions > 0 )); then
output="$output:$ZSH_THEME_GIT_LINES_REMOVED_PREFIX${deletions}-$ZSH_THEME_GIT_LINES_REMOVED_SUFFIX"
fi
echo $output
fi
}