initial templating support

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/template.source.sh b/lib/template.source.sh
new file mode 100644
index 0000000..1b0df9d
--- /dev/null
+++ b/lib/template.source.sh
@@ -0,0 +1,49 @@
+template::generate () {
+    log INFO 'Generating files from templates'
+    local -i num_tpl_files=0
+
+    while read -r tpl_path; do
+        if test -n "$CONTENT_FILTER" && ! $GREP -q "$CONTENT_FILTER" <<< "$tpl_path"; then
+            continue
+        fi
+        num_tpl_files=$(( num_tpl_files + 1 ))
+        template::_generate "$tpl_path" &
+    done < <(find "$CONTENT_BASE_DIR/gemtext" -type f -name \*.tpl)
+
+    wait
+    log INFO "Converted $num_tpl_files template files"
+}
+
+template::_generate () {
+    local -r tpl_path="$1"; shift
+    local -r tpl_dir="$(dirname "$tpl_path")"
+    local -r tpl="$(basename "$tpl_path")"
+    local -r dest="${tpl/.tpl/}"
+
+    cd "$tpl_dir" || log PANIC "Unable to chdir to $tpl_dir"
+    log INFO "$tpl_path -> $dest"
+
+    while IFS='' read -r line; do
+        case "$line" in
+            '<< '*)
+                template::_line "$line"
+                ;;
+            *)
+                echo "$line"
+                ;;
+        esac
+    done < "$tpl" > "$dest.tmp"
+
+    mv "$dest.tmp" "$dest"
+}
+
+template::_line () {
+    eval "${1/<< /}"
+}
+
+template::test () {
+    assert::equals "$(template::_line '<< echo -n foo')" 'foo'
+    assert::equals "$(template::_line '<< echo foo')" 'foo'
+    assert::equals "$(template::_line '<< $DATE --date @0 +%Y%m%d')" '19700101'
+    assert::equals "$(template::_line '<< echo "$AUTHOR"')" "$AUTHOR"
+}