Extract bash completion script as "external" resource

meson.build

@@ -105,8 +105,14 @@ if uenv_cli
             'src/cli/completion.cpp',
     ]
 
+    completion_bash_dep = custom_target(
+        'completion-bash-dep',
+        input: 'src/cli/completion.bash',
+        output: 'completion.bash.h',
+        command: ['xxd', '-i', '-n', 'completion_bash_main', '@INPUT@', '@OUTPUT@'])
+
     cli = executable('uenv',
-            sources: cli_src,
+            sources: cli_src + completion_bash_dep,
             dependencies: [uenv_dep, sqlite3_dep, fmt_dep, spdlog_dep, cli11_dep, barkeep_dep],
             c_args: [
               '-DVERSION="@0@"'.format(version),

src/cli/completion.bash

@@ -0,0 +1,55 @@
+_uenv_completions()
+{
+    local cur prefix func_name UENV_OPTS
+
+    local -a COMP_WORDS_NO_FLAGS
+    local index=0
+    while [[ "$index" -lt "$COMP_CWORD" ]]
+    do
+        if [[ "${COMP_WORDS[$index]}" == [a-z]* ]]
+        then
+            COMP_WORDS_NO_FLAGS+=("${COMP_WORDS[$index]}")
+        fi
+        let index++
+    done
+    COMP_WORDS_NO_FLAGS+=("${COMP_WORDS[$COMP_CWORD]}")
+    local COMP_CWORD_NO_FLAGS=$((${#COMP_WORDS_NO_FLAGS[@]} - 1))
+
+    cur="${COMP_WORDS_NO_FLAGS[COMP_CWORD_NO_FLAGS]}"
+    prefix="_${COMP_WORDS_NO_FLAGS[*]:0:COMP_CWORD_NO_FLAGS}"
+    func_name="${prefix// /_}"
+    func_name="${func_name//-/_}"
+
+    local UENV_OPTS=""
+    local FILE_COMPLETION="false"
+    if typeset -f $func_name >/dev/null
+    then
+        $func_name
+    fi
+
+    local SUBCOMMAND_OPTS=$(compgen -W "${UENV_OPTS}" -- "${cur}")
+    local FILE_OPTS=""
+    local FILE_OPTS_FORMATED=""
+    if [ "${FILE_COMPLETION}" = "true" ]; then
+        FILE_OPTS=$(compgen -f -- "${cur}")
+        for item in $FILE_OPTS; do
+            if [[ -d "${item}" ]]; then
+                FILE_OPTS_FORMATED+="${item}/ "
+            else
+                FILE_OPTS_FORMATED+="${item} "
+            fi
+        done
+    fi
+
+    # Do not add space after suggestion if completing a directory
+    local DIRS=$(compgen -d -- "${cur}")
+    if [[ -n "${DIRS}" ]]; then
+        compopt -o nospace
+    else
+        compopt +o nospace
+    fi
+
+    COMPREPLY=(${SUBCOMMAND_OPTS} ${FILE_OPTS_FORMATED})
+}
+
+complete -F _uenv_completions uenv

src/cli/completion.cpp

@@ -2,6 +2,7 @@
 
 #include <ranges>
 #include <string>
+#include <string_view>
 
 #include <fmt/core.h>
 #include <fmt/ranges.h>
@@ -124,67 +125,12 @@ std::string bash_completion(CLI::App* cli, const std::string& name) {
                            item.file_completion ? "true" : "false");
     };
 
-    std::string main_functions = R"(
-_uenv_completions()
-{
-    local cur prefix func_name UENV_OPTS
-
-    local -a COMP_WORDS_NO_FLAGS
-    local index=0
-    while [[ "$index" -lt "$COMP_CWORD" ]]
-    do
-        if [[ "${COMP_WORDS[$index]}" == [a-z]* ]]
-        then
-            COMP_WORDS_NO_FLAGS+=("${COMP_WORDS[$index]}")
-        fi
-        let index++
-    done
-    COMP_WORDS_NO_FLAGS+=("${COMP_WORDS[$COMP_CWORD]}")
-    local COMP_CWORD_NO_FLAGS=$((${#COMP_WORDS_NO_FLAGS[@]} - 1))
-
-    cur="${COMP_WORDS_NO_FLAGS[COMP_CWORD_NO_FLAGS]}"
-    prefix="_${COMP_WORDS_NO_FLAGS[*]:0:COMP_CWORD_NO_FLAGS}"
-    func_name="${prefix// /_}"
-    func_name="${func_name//-/_}"
-
-    local UENV_OPTS=""
-    local FILE_COMPLETION="false"
-    if typeset -f $func_name >/dev/null
-    then
-        $func_name
-    fi
-
-    local SUBCOMMAND_OPTS=$(compgen -W "${UENV_OPTS}" -- "${cur}")
-    local FILE_OPTS=""
-    local FILE_OPTS_FORMATED=""
-    if [ "${FILE_COMPLETION}" = "true" ]; then
-        FILE_OPTS=$(compgen -f -- "${cur}")
-        for item in $FILE_OPTS; do
-            if [[ -d "${item}" ]]; then
-                FILE_OPTS_FORMATED+="${item}/ "
-            else
-                FILE_OPTS_FORMATED+="${item} "
-            fi
-        done
-    fi
-
-    # Do not add space after suggestion if completing a directory
-    local DIRS=$(compgen -d -- "${cur}")
-    if [[ -n "${DIRS}" ]]; then
-        compopt -o nospace
-    else
-        compopt +o nospace
-    fi
-
-    COMPREPLY=(${SUBCOMMAND_OPTS} ${FILE_OPTS_FORMATED})
-}
-
-complete -F _uenv_completions uenv
-)";
+#include "completion.bash.h"
 
     return fmt::format(
         "{}{}", fmt::join(std::views::transform(cl, gen_bash_function), ""),
-        main_functions);
+        std::string_view(reinterpret_cast<const char*>(completion_bash_main),
+                         completion_bash_main_len));
 }
 } // namespace impl