mirror of
https://github.com/ohmyzsh/ohmyzsh.git
synced 2024-11-30 17:50:07 +00:00
113 lines
4.2 KiB
Bash
113 lines
4.2 KiB
Bash
# Easier alias to use the plugin
|
|
alias ccat="colorize_cat"
|
|
alias cless="colorize_less"
|
|
|
|
# '$0:A' gets the absolute path of this file
|
|
ZSH_COLORIZE_PLUGIN_PATH=$0:A
|
|
|
|
colorize_check_requirements() {
|
|
local available_tools=("chroma" "pygmentize")
|
|
|
|
if [ -z "$ZSH_COLORIZE_TOOL" ]; then
|
|
if (( $+commands[pygmentize] )); then
|
|
ZSH_COLORIZE_TOOL="pygmentize"
|
|
elif (( $+commands[chroma] )); then
|
|
ZSH_COLORIZE_TOOL="chroma"
|
|
else
|
|
echo "Neither 'pygments' nor 'chroma' is installed!" >&2
|
|
return 1
|
|
fi
|
|
fi
|
|
|
|
if [[ ${available_tools[(Ie)$ZSH_COLORIZE_TOOL]} -eq 0 ]]; then
|
|
echo "ZSH_COLORIZE_TOOL '$ZSH_COLORIZE_TOOL' not recognized. Available options are 'pygmentize' and 'chroma'." >&2
|
|
return 1
|
|
elif (( $+commands["$ZSH_COLORIZE_TOOL"] )); then
|
|
echo "Package '$ZSH_COLORIZE_TOOL' is not installed!" >&2
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
colorize_cat() {
|
|
if ! colorize_check_requirements; then
|
|
return 1
|
|
fi
|
|
|
|
# If the environment variable ZSH_COLORIZE_STYLE
|
|
# is set, use that theme instead. Otherwise,
|
|
# use the default.
|
|
if [ -z "$ZSH_COLORIZE_STYLE" ]; then
|
|
# Both pygmentize & chroma support 'emacs'
|
|
ZSH_COLORIZE_STYLE="emacs"
|
|
fi
|
|
|
|
# Use stdin if no arguments have been passed.
|
|
if [ $# -eq 0 ]; then
|
|
if [[ "$ZSH_COLORIZE_TOOL" == "pygmentize" ]]; then
|
|
pygmentize -O style="$ZSH_COLORIZE_STYLE" -g
|
|
else
|
|
chroma --style="$ZSH_COLORIZE_STYLE"
|
|
fi
|
|
return $?
|
|
fi
|
|
|
|
# Guess lexer from file extension, or guess it from file contents if unsuccessful.
|
|
local FNAME lexer
|
|
for FNAME in "$@"; do
|
|
if [[ "$ZSH_COLORIZE_TOOL" == "pygmentize" ]]; then
|
|
lexer=$(pygmentize -N "$FNAME")
|
|
if [[ $lexer != text ]]; then
|
|
pygmentize -O style="$ZSH_COLORIZE_STYLE" -l "$lexer" "$FNAME"
|
|
else
|
|
pygmentize -O style="$ZSH_COLORIZE_STYLE" -g "$FNAME"
|
|
fi
|
|
else
|
|
chroma --style="$ZSH_COLORIZE_STYLE" "$FNAME"
|
|
fi
|
|
done
|
|
}
|
|
|
|
# The less option 'F - Forward forever; like "tail -f".' will not work in this implementation
|
|
# caused by the lack of the ability to follow the file within pygmentize.
|
|
colorize_less() {
|
|
if ! colorize_check_requirements; then
|
|
return 1
|
|
fi
|
|
|
|
_cless() {
|
|
# LESS="-R $LESS" enables raw ANSI colors, while maintain already set options.
|
|
local LESS="-R $LESS"
|
|
|
|
# This variable tells less to pipe every file through the specified command
|
|
# (see the man page of less INPUT PREPROCESSOR).
|
|
# 'zsh -ic "colorize_cat %s 2> /dev/null"' would not work for huge files like
|
|
# the ~/.zsh_history. For such files the tty of the preprocessor will be supended.
|
|
# Therefore we must source this file to make colorize_cat available in the
|
|
# preprocessor without the interactive mode.
|
|
# `2>/dev/null` will suppress the error for large files 'broken pipe' of the python
|
|
# script pygmentize, which will show up if less has not fully "loaded the file"
|
|
# (e.g. when not scrolled to the bottom) while already the next file will be displayed.
|
|
local LESSOPEN="| zsh -c 'source \"$ZSH_COLORIZE_PLUGIN_PATH\"; \
|
|
ZSH_COLORIZE_TOOL=$ZSH_COLORIZE_TOOL ZSH_COLORIZE_STYLE=$ZSH_COLORIZE_STYLE \
|
|
colorize_cat %s 2> /dev/null'"
|
|
|
|
# LESSCLOSE will be set to prevent any errors by executing a user script
|
|
# which assumes that his LESSOPEN has been executed.
|
|
local LESSCLOSE=""
|
|
|
|
LESS="$LESS" LESSOPEN="$LESSOPEN" LESSCLOSE="$LESSCLOSE" less "$@"
|
|
}
|
|
|
|
if [ -t 0 ]; then
|
|
_cless "$@"
|
|
else
|
|
# The input is not associated with a terminal, therefore colorize_cat will
|
|
# colorize this input and pass it to less.
|
|
# Less has now to decide what to use. If any files have been provided, less
|
|
# will ignore the input by default, otherwise the colorized input will be used.
|
|
# If files have been supplied and the input has been redirected, this will
|
|
# lead to unnecessary overhead, but retains the ability to use the less options
|
|
# without checking for them inside this script.
|
|
colorize_cat | _cless "$@"
|
|
fi
|
|
}
|