Add shell completion script generation feature

1 files changed, 48 insertions, 0 deletions

diff --git a/mingling_core/tmpls/comps/bash.sh b/mingling_core/tmpls/comps/bash.sh
new file mode 100644
index 0000000..1af4f6c
--- /dev/null
+++ b/mingling_core/tmpls/comps/bash.sh
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+_<<<bin_name>>>_bash_completion() {
+    local cur="${COMP_WORDS[COMP_CWORD]}"
+    local prev=""
+    [ $COMP_CWORD -gt 0 ] && prev="${COMP_WORDS[COMP_CWORD-1]}"
+
+    local word_index=$((COMP_CWORD + 1))
+
+    local args=()
+    args+=(-f="${COMP_LINE//-/^}")
+    args+=(-C="$COMP_POINT")
+    args+=(-w="${cur//-/^}")
+    args+=(-p="${prev//-/^}")
+    args+=(-c="${COMP_WORDS[0]//-/^}")
+    args+=(-i="$word_index")
+    args+=(-F="bash")
+
+    for word in "${COMP_WORDS[@]}"; do
+        args+=(-a="${word//-/^}")
+    done
+
+    local suggestions
+    if suggestions=$(<<<bin_name>>> __comp "${args[@]}" 2>/dev/null); then
+        if [ $? -eq 0 ]; then
+            if [ "$suggestions" = "_file_" ]; then
+                compopt -o default
+                COMPREPLY=()
+                return
+            fi
+
+            if [ -n "$suggestions" ]; then
+                local -a all_suggestions filtered
+                mapfile -t all_suggestions < <(printf '%s\n' "$suggestions")
+
+                for suggestion in "${all_suggestions[@]}"; do
+                    [ -z "$cur" ] || [[ "$suggestion" == "$cur"* ]] && filtered+=("$suggestion")
+                done
+
+                [ ${#filtered[@]} -gt 0 ] && COMPREPLY=("${filtered[@]}")
+                return
+            fi
+        fi
+    fi
+
+    COMPREPLY=()
+}
+
+complete -F _<<<bin_name>>>_bash_completion <<<bin_name>>>