update

1 files changed, 80 insertions, 0 deletions

diff --git a/.zsh-powerline.sh b/.zsh-powerline.sh
new file mode 100644
index 0000000..f0835a4
--- /dev/null
+++ b/.zsh-powerline.sh
@@ -0,0 +1,80 @@
+# Colorscheme
+readonly COLOR_CWD='blue'
+readonly COLOR_GIT='cyan'
+readonly COLOR_SUCCESS='green'
+readonly COLOR_FAILURE='red'
+readonly COLOR_TIME='cyan'
+
+readonly SYMBOL_GIT_BRANCH='⑂'
+readonly SYMBOL_GIT_MODIFIED='*'
+readonly SYMBOL_GIT_PUSH='↑'
+readonly SYMBOL_GIT_PULL='↓'
+readonly PS_SYMBOL='$'
+
+_git_info() {
+    hash git 2>/dev/null || return  # git not found
+
+    # get current branch
+    local ref=$(git symbolic-ref --short HEAD 2>/dev/null)
+
+    if [[ -n "$ref" ]]; then
+        # prepend branch symbol
+        ref=$SYMBOL_GIT_BRANCH$ref
+    else
+        # get most recent tag or abbreviated unique hash
+        ref=$(git describe --tags --always 2>/dev/null)
+    fi
+
+    [[ -n "$ref" ]] || return   # not a git repo
+
+    local marks
+
+    # scan first two lines of output from `git status`
+    while IFS= read -r line; do
+        if [[ $line =~ ^## ]]; then # header line
+            [[ $line =~ ahead\ ([0-9]+) ]] && marks+=" $SYMBOL_GIT_PUSH$match[1]"
+            [[ $line =~ behind\ ([0-9]+) ]] && marks+=" $SYMBOL_GIT_PULL$match[1]"
+        else # branch is modified if output contains more lines after the header line
+            marks="$SYMBOL_GIT_MODIFIED$marks"
+            break
+        fi
+    done < <(git status --porcelain --branch 2>/dev/null)  # note the space between the two <
+
+    # print without a trailing newline
+    printf " $ref$marks"
+}
+
+
+_config_prompt() {
+    # Color coding based on exit code of the previous command.  Note this must
+    # be dealt with in the beginning of the function, otherwise the $? will not
+    # match the right command executed.
+
+    if [[ $? -eq 0 ]]; then
+        local symbol="%F{$COLOR_SUCCESS}$PS_SYMBOL%f"
+    else
+        local symbol="%F{$COLOR_FAILURE}$PS_SYMBOL%f"
+    fi
+
+    local cwd="%F{$COLOR_CWD}%~%f"
+    local git="%F{$COLOR_GIT}$(_git_info)%f"
+    local time="%F{$COLOR_TIME}%D{%H:%M:%S}%f"
+
+    PROMPT="$cwd$git $symbol "
+    RPROMPT="$time"
+}
+
+
+# useful zsh hook functions
+
+precmd() {  # run before each prompt
+    _config_prompt
+}
+
+
+preexec() { # run after user command is read and about to execute
+}
+
+
+chpwd() { # run when changing current working directory
+}