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#!/usr/bin/env bash
# Module: template
# Description: Genera archivos a partir de plantillas con variables {{var}}, bucles, includes y delimitadores configurables
# Author: Luis GuLo
# Version: 0.4.0
# Dependencies: bash, sed, tee, grep, cat
# 🧭 Detección de raíz del proyecto
PROJECT_ROOT="${SHFLOW_HOME:-$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)}"
TEMPLATE_DIR="$PROJECT_ROOT/core/templates"
template_task() {
local host="$1"; shift
declare -A args
local start_delim="{{" end_delim="}}" strict="false"
declare -A vars
# 🌐 Cargar traducciones
local lang="${shflow_vars[language]:-es}"
local trfile="$(dirname "${BASH_SOURCE[0]}")/template.tr.${lang}"
declare -A tr
if [[ -f "$trfile" ]]; then
while IFS='=' read -r k v; do tr["$k"]="$v"; done < "$trfile"
fi
# Parsear argumentos
for arg in "$@"; do
key="${arg%%=*}"
value="${arg#*=}"
case "$key" in
src) src="$value" ;;
dest) dest="$value" ;;
become) become="$value" ;;
delimiters)
start_delim="${value%% *}"
end_delim="${value#* }"
;;
strict) strict="$value" ;;
*) vars["$key"]="$value" ;;
esac
done
local prefix=""
[ "$become" = "true" ] && prefix="sudo"
local template_path="$TEMPLATE_DIR/$src"
[[ ! -f "$template_path" ]] && echo "$(render_msg "${tr[missing_template]}" "path=$template_path")" && return 1
local rendered=""
local line loop_active="false" loop_key="" loop_buffer=()
while IFS= read -r line || [[ -n "$line" ]]; do
if [[ "$line" =~ ${start_delim}[[:space:]]*include[[:space:]]*\"([^\"]+)\"[[:space:]]*${end_delim} ]]; then
include_file="${BASH_REMATCH[1]}"
include_path="$TEMPLATE_DIR/$include_file"
[[ -f "$include_path" ]] && rendered+=$(cat "$include_path")$'\n'
continue
fi
if [[ "$line" =~ ^#LOOP[[:space:]]+([a-zA-Z0-9_]+)$ ]]; then
loop_active="true"
loop_key="${BASH_REMATCH[1]}"
loop_buffer=()
continue
fi
if [[ "$line" == "#ENDLOOP" ]]; then
loop_active="false"
IFS=',' read -r -a items <<< "${vars[$loop_key]}"
for item in "${items[@]}"; do
for loop_line in "${loop_buffer[@]}"; do
rendered+=$(replace_vars "$loop_line" "$item" "$start_delim" "$end_delim")$'\n'
done
done
continue
fi
if [[ "$loop_active" == "true" ]]; then
loop_buffer+=("$line")
continue
fi
rendered+=$(replace_vars "$line" "" "$start_delim" "$end_delim")$'\n'
done < "$template_path"
if [[ "$strict" == "true" ]]; then
missing=$(echo "$rendered" | grep -o "${start_delim}[^${end_delim}]*${end_delim}" | sort -u)
if [[ -n "$missing" ]]; then
echo "${tr[missing_vars]:-❌ [template] Variables no definidas:}"
echo "$missing"
return 1
fi
fi
echo "$rendered" | $prefix tee "$dest" > /dev/null
echo "$(render_msg "${tr[generated]}" "dest=$dest")"
}
replace_vars() {
local line="$1"
local item="$2"
local start_delim="$3"
local end_delim="$4"
for key in "${!vars[@]}"; do
line="${line//${start_delim}${key}${end_delim}/${vars[$key]}}"
done
[[ -n "$item" ]] && line="${line//${start_delim}item${end_delim}/$item}"
echo "$line"
}
check_dependencies_template() {
local lang="${shflow_vars[language]:-es}"
local trfile="$(dirname "${BASH_SOURCE[0]}")/template.tr.${lang}"
declare -A tr
if [[ -f "$trfile" ]]; then
while IFS='=' read -r k v; do tr["$k"]="$v"; done < "$trfile"
fi
local missing=()
for cmd in sed tee grep cat; do
command -v "$cmd" >/dev/null 2>&1 || missing+=("$cmd")
done
if [[ ${#missing[@]} -gt 0 ]]; then
echo "$(render_msg "${tr[missing_deps]}" "cmds=${missing[*]}")"
return 1
fi
echo "${tr[deps_ok]:-✅ [template] Todas las dependencias están disponibles}"
return 0
}
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