From 2a97c358f642bad32bbdd6e025a8b5700bd2eb91 Mon Sep 17 00:00:00 2001
From: Andrey Orst <andreyorst@gmail.com>
Date: Tue, 26 Mar 2019 10:22:47 +0300
Subject: [PATCH] more args, restructurize

---
 rc/fzf.kak | 65 +++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 47 insertions(+), 18 deletions(-)

diff --git a/rc/fzf.kak b/rc/fzf.kak
index e2a3680..14d6bff 100644
--- a/rc/fzf.kak
+++ b/rc/fzf.kak
@@ -43,7 +43,7 @@ These are default arguments for the tools above:
     highlight: "highlight --failsafe -O ansi {}"
     rouge:     "rougify {}"
 ' \
-str fzf_highlighter "highlight"
+str fzf_highligh_cmd "highlight"
 
 declare-option -docstring "height of fzf tmux split in screen lines or percents.
 Default value: 25%%" \
@@ -143,7 +143,7 @@ fzf -params 2..4 %{ evaluate-commands %sh{
     fi
 
     if [ -z "${command##edit*}" ] && [ $kak_opt_fzf_preview = "true" ]; then
-        case $kak_opt_fzf_highlighter in
+        case $kak_opt_fzf_highligh_cmd in
         bat)
             highlighter="bat --color=always --style=plain {}" ;;
         coderay)
@@ -153,11 +153,11 @@ fzf -params 2..4 %{ evaluate-commands %sh{
         rouge)
             highlighter="rougify {}" ;;
         bat*|coderay*|highlight*|rougify*)
-            highlighter=$kak_opt_fzf_highlighter ;;
+            highlighter=$kak_opt_fzf_highligh_cmd ;;
         *)
-            executable=$(printf "%s\n" "$kak_opt_fzf_highlighter" | grep -o -E '[[:alpha:]]+' | head -1)
+            executable=$(printf "%s\n" "$kak_opt_fzf_highligh_cmd" | grep -o -E '[[:alpha:]]+' | head -1)
             printf "%s\n" "echo -markup %{{Information}'$executable' highlighter is not supported by the script. fzf.kak may not work as you expect.}"
-            highlighter=$kak_opt_fzf_highlighter ;;
+            highlighter=$kak_opt_fzf_highligh_cmd ;;
         esac
 
         tmux_height=$kak_opt_fzf_tmux_height_file_preview
@@ -217,25 +217,54 @@ fzf -params 2..4 %{ evaluate-commands %sh{
 }}
 
 define-command -docstring \
-"fzf <switches> fzf-command: generic fzf command.
-This command can be used to create new fzf wrappers for various Kakoune or external
-features. More about arguments:
+"fzf <switches>: generic fzf command. This command can be used to create new fzf wrappers for various Kakoune or external features.
 
 Switches:
--kak-cmd <command>: A Kakoune cmd that is applied to fzf resulting value.
-
--fzf-cmd <items command>: A command that is used to provide list of values to fzf.
--fzf-args <args>: Additional flags for fzf program
--post-action <commands>: Extra commands that are preformed after `-kak-cmd' command." \
+    -kak-cmd <command>: A Kakoune cmd that is applied to fzf resulting value.
+    -fzf-cmd <items command>: A command that is used to provide list of values to fzf.
+    -fzf-args <args>: Additional flags for fzf program
+    -post-action <commands>: Extra commands that are preformed after `-kak-cmd' command.
+    -preview: should fzf window include preview" \
 new-fzf -shell-script-candidates %{echo "-kak-cmd\n-fzf-cmd\n-fzf-args\n-post-action\n"} -params .. %{ evaluate-commands %sh{
     while [ $# -gt 0 ]; do
         case $1 in
-            -kak-cmd)     shift; kak_cmd="$kak_cmd $1" ;;
-            -fzf-cmd)     shift; fzf_cmd="$fzf_cmd $1" ;;
-            -fzf-args)    shift; fzf_args="$fzf_args $1" ;;
-            -post-action) shift; post_action="$post_action $1" ;;
-            *)            ignore="$ignore $1" ;;
+            -kak-cmd)     shift; kak_cmd="${kak_cmd} $1" ;;
+            -fzf-cmd)     shift; fzf_cmd="${fzf_cmd} $1" ;;
+            -fzf-args)    shift; fzf_args="${fzf_args} $1" ;;
+            -post-action) shift; post_action="${post_action} $1" ;;
+            -preview)     preview=true
+            *)            ignored="${ignored} $1" ;;
         esac
         shift
     done
+
+    if [ "$preview" = "true" ] && [ ${kak_opt_fzf_preview} = "true" ]; then
+        case ${kak_opt_fzf_highligh_cmd} in
+            bat)       highligh_cmd="bat --color=always --style=plain {}" ;;
+            coderay)   highligh_cmd="coderay {}" ;;
+            highlight) highligh_cmd="highlight --failsafe -O ansi {}" ;;
+            rouge)     highligh_cmd="rougify {}" ;;
+            *)         highligh_cmd="${kak_opt_fzf_highligh_cmd}" ;;
+        esac
+        if [ -n "${kak_client_env_TMUX}" ]; then
+            [ -z "${kak_cmd##edit*}" ] && tmux_height=$kak_opt_fzf_tmux_height_file_preview
+            preview_pos="pos=right:${kak_opt_fzf_preview_width};"
+        else
+            preview_pos="sleep 0.1; [ \$(tput cols) -gt \$(expr \$(tput lines) \* 2) ] && pos=right:${kak_opt_fzf_preview_width} || pos=top:${kak_opt_fzf_preview_height};"
+        fi
+        fzf_args="${fzf_args} --preview '(${highligh_cmd} || cat {}) 2>/dev/null | head -n ${kak_opt_fzf_preview_lines}' --preview-window=\${pos}"
+    fi
+
+    fzf_tmp=$(mktemp -d ${TMPDIR:-/tmp}/fzf.kak.XXXXXX)
+    fzfcmd="${fzf_tmp}/fzfcmd"
+    result="${fzf_tmp}/result"
+    printf "%s\n" "cd \"${PWD}\" && ${preview_pos} ${fzf_cmd} | SHELL=$(command -v sh) ${kak_opt_fzf_implementation} ${fzf_args} > ${result}; rm ${fzfcmd}" > ${fzfcmd}
+    chmod 755 ${fzfcmd}
+
+    if [ -n "${kak_client_env_TMUX}" ]; then
+        [ -n "${tmux_height%%*%}" ] && measure="-l" || measure="-p"
+        cmd="nop %sh{ command tmux split-window ${measure} ${tmux_height%%%*} 'sh -c ${fzfcmd}' }"
+    else
+        cmd="terminal %{${fzfcmd}}"
+    fi
 }}