From 365a195cc0362bfeb52ebc0e9cb958b0b455aac4 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Wed, 15 Mar 2023 00:06:25 +0200
Subject: initial templating support

---
 lib/gemfeed.source.sh  |  2 +-
 lib/generate.source.sh |  1 -
 lib/git.source.sh      |  4 ++--
 lib/template.source.sh | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 52 insertions(+), 4 deletions(-)
 create mode 100644 lib/template.source.sh

(limited to 'lib')

diff --git a/lib/gemfeed.source.sh b/lib/gemfeed.source.sh
index a0c0b09..d888866 100644
--- a/lib/gemfeed.source.sh
+++ b/lib/gemfeed.source.sh
@@ -24,7 +24,7 @@ gemfeed::updatemainindex () {
 
 gemfeed::_get_word_count () {
     local -r gmi_file="$1"; shift
-    sed '/^```/,/^```/d' "$gmi_file" | wc -w | cut -d' ' -f1
+    $SED '/^```/,/^```/d' "$gmi_file" | wc -w | cut -d' ' -f1
 }
 
 # Generate a index.gmi in the ./gemfeed subdir.
diff --git a/lib/generate.source.sh b/lib/generate.source.sh
index 281fbe0..848e7fd 100644
--- a/lib/generate.source.sh
+++ b/lib/generate.source.sh
@@ -128,7 +128,6 @@ generate::fromgmi () {
 
     # Add content
     while read -r src; do
-        # User can specify a content filter
         if test -n "$CONTENT_FILTER" && ! $GREP -q "$CONTENT_FILTER" <<< "$src"; then
             continue
         fi
diff --git a/lib/git.source.sh b/lib/git.source.sh
index 67dc93e..1a71ade 100644
--- a/lib/git.source.sh
+++ b/lib/git.source.sh
@@ -23,7 +23,7 @@ git::add_all () {
 git::_add_all () {
     local -r message="$1"; shift
     local -r content_dir="$1"; shift
-    cd "$content_dir"
+    cd "$content_dir" || log PANIC "Unable to chdir to $content_dir"
 
     find . -type f -not -path '*/\.git*' | while read -r file; do
         git add "$file"
@@ -44,7 +44,7 @@ git::sync_all () {
 
 git::_sync_all () {
     local -r content_dir="$1"; shift
-    cd "$content_dir"
+    cd "$content_dir" || log PANIC "Unable to chdir to $content_dir"
 
     git pull
     git push
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"
+}
-- 
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