mirror of
https://github.com/junegunn/fzf.vim.git
synced 2026-09-30 07:32:23 +08:00
Junegunn Choi
0097439b74
Ex mode starts on the last line, so the preview reported the end of the file as the tag, while every other path refuses such an entry.
86 lines
2.5 KiB
Bash
Executable File
86 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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REVERSE="\x1b[7m"
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RESET="\x1b[m"
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if [ -z "$1" ]; then
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echo "usage: $0 FILENAME:TAGFILE:EXCMD"
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exit 1
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fi
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IFS=':' read -r FILE TAGFILE EXCMD <<< "$*"
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# Complete file paths which are relative to the given tag file
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if [ "${FILE:0:1}" != "/" ]; then
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FILE="$(dirname "${TAGFILE}")/${FILE}"
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fi
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if [ ! -r "$FILE" ]; then
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echo "File not found ${FILE}"
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exit 1
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fi
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# If users aren't using vim, they are probably using neovim
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if command -v vim > /dev/null; then
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VIMNAME="vim"
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elif command -v nvim > /dev/null; then
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VIMNAME="nvim"
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else
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echo "Cannot preview tag: vim or nvim unavailable"
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exit 1
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fi
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# Ex mode starts on the last line, so an entry with no address would report the
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# end of the file as the tag. Every other path refuses such an entry
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if [ -z "${EXCMD}" ]; then
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exit 1
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fi
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# The address comes from a tags file, which can be untrusted, and a preview runs
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# as soon as an entry is highlighted. Sandboxed as a builtin tag jump is, so that
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# it cannot run a shell command or touch a file. ':sandbox' on its own only covers
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# the command up to the first '|', so hand the whole address to ':execute' as a
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# string literal, doubling the quotes in it
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EXCMD_LITERAL=${EXCMD//\'/\'\'}
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CENTER="$("${VIMNAME}" -R -i NONE -u NONE -e -m -s "${FILE}" \
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-c "set nomagic" \
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-c "silent sandbox execute '${EXCMD_LITERAL}'" \
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-c 'let l=line(".") | new | put =l | print | qa!')" || exit
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START_LINE="$(( CENTER - FZF_PREVIEW_LINES / 2 ))"
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if (( START_LINE <= 0 )); then
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START_LINE=1
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fi
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END_LINE="$(( START_LINE + FZF_PREVIEW_LINES - 1 ))"
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# Sometimes bat is installed as batcat.
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if command -v batcat > /dev/null; then
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BATNAME="batcat"
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elif command -v bat > /dev/null; then
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BATNAME="bat"
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fi
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if [ -z "$FZF_PREVIEW_COMMAND" ] && [ "${BATNAME:+x}" ]; then
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${BATNAME} --style="${BAT_STYLE:-numbers}" \
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--color=always \
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--pager=never \
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--wrap=never \
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--terminal-width="${FZF_PREVIEW_COLUMNS}" \
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--line-range="${START_LINE}:${END_LINE}" \
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--highlight-line="${CENTER}" \
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"$FILE"
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exit $?
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fi
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DEFAULT_COMMAND="highlight -O ansi -l {} || coderay {} || rougify {} || cat {}"
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CMD=${FZF_PREVIEW_COMMAND:-$DEFAULT_COMMAND}
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CMD=${CMD//{\}/$(printf %q "$FILE")}
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eval "$CMD" 2> /dev/null | awk "{ \
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if (NR >= $START_LINE && NR <= $END_LINE) { \
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if (NR == $CENTER) \
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{ gsub(/\x1b[[0-9;]*m/, \"&$REVERSE\"); printf(\"$REVERSE%s\n$RESET\", \$0); } \
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else printf(\"$RESET%s\n\", \$0); \
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} \
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}"
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