7c14c8ae1a
Specify a dependency as a|b to check if either a or b is available as a
command. The script itself must check at runtime, which one is actually
available and use the right one. Helper methods for this are provided in
lib/common.zsh:
- `alternatives a b` aliases a to b, if a is not available
- `alternatives-noparam a b` replaces a with b, if a is not available,
and discards any parameters (e.g. for replacing a formatter with cat)
74 lines
1.5 KiB
Bash
Executable file
74 lines
1.5 KiB
Bash
Executable file
#!/bin/zsh
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source ${$(realpath "$0"):h}/lib/common.zsh
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typeset -A interpreter_checked
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have_dependency() {
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if [[ ! $interpreter_checked[$1] ]]; then
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check "Checking for $1… "
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for variant in ${(s.|.)1}; do
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if which $variant &> /dev/null; then
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succeed
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interpreter_checked[$1]=1
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return 0
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fi
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done
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fail "not found in path"
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return 1
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fi
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}
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uses_interpreter() {
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head -n 1 $2 | grep -q $1
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}
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get_dependencies() {
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sed -n '2{/^#dep:/{s/^#dep://;p;q}}' $1
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}
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if [[ -z $1 ]]; then
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<<-HELP
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Usage: $0 [opts] <program_names>
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Options:
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-p, --path PATH target directory to install into (defaults to ~/.local/bin)
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-f, --force overwrite existing files in the same dir
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-s, --skip when installing several scripts, skip scripts with unmet
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dependencies instead of aborting.
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HELP
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exit 1
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fi
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zparseopts -D -E p:=install_path -path:=install_path f=force -force=force \
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s=skip -skip=skip
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if [[ ! $install_path ]]; then
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install_path=$HOME/.local/bin
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else
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install_path=${install_path[2]}
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fi
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for prog in $@; do
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for lang in zsh ruby python amm; do
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if uses_interpreter $lang $prog; then
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have_dependency $lang || exit 1
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fi
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done
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for dep in $(get_dependencies $prog); do
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if ! have_dependency $dep; then
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if [[ $skip ]]; then
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continue 2
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else
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exit 1
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fi
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fi
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done
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if [[ -e $install_path/${prog:t} && ! $force ]]; then
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warning "$prog already exists at $install_path. Skipping."
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else
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check "Installing $prog… "
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ln -fsr $prog $install_path || fail
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succeed
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fi
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done
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