initial commit

.config/zsh/lib/git.zsh

@@ -0,0 +1,54 @@
+#!/bin/zsh
+
+## fancy and manageable PS1 for git
+typeset -gA ZSHU_PS
+ZSHU_PS[git]=0
+
+_zshu_git_avail() { (( $+commands[git] )) ; }
+
+_zshu_git() { GIT_OPTIONAL_LOCKS=0 command git "$@"; }
+
+_zshu_git_is_repo() { _zshu_git rev-parse --git-dir &>/dev/null ; }
+
+zshu-git-test() {
+    [ "${ZSHU_PS[git]}" = '1' ] || return 1
+
+    _zshu_git_avail || return 2
+
+    _zshu_git_is_repo || return 3
+
+    return 0
+}
+
+_zshu_git_pwd() {
+    zshu-git-test || return
+    local p=${(%):-%~}
+    [[ "$p" =~ '/.+' ]] || return
+    local s pfx last
+    s=$(_zshu_git rev-parse --show-prefix)
+    s="${s%%/}"
+    if [ -n "$s" ] ; then
+        p=${p%%/$s}
+        last="${s:t}"
+        pfx="${s%${last}}"
+        pfx="${pfx%/}"
+        pfx="/${pfx}${pfx:+/}"
+    else
+        last="/"
+    fi
+    ZSHU_PS[pwd]="%F{magenta}$p%F{cyan}${pfx}%B${last}%f%b"
+}
+
+zshu-git-enable()  { ZSHU_PS[git]=1 ; }
+zshu-git-disable() { ZSHU_PS[git]=0 ; }
+
+zshu-git-status() {
+    _zshu_git_avail
+    echo "Git binary: "${(%):-%(?..NOT )}"found in PATH"
+    [ "${ZSHU_PS[git]}" = 1 ]
+    echo "Git prompt: "${(%):-%(?.enabled.disabled)}
+    _zshu_git_is_repo
+    echo "Git repo: "${(%):-%(?..NOT )}"present"
+}
+
+ZSHU[pwd_hook]="${ZSHU[pwd_hook]}${ZSHU[pwd_hook]:+ }_zshu_git_pwd"