integrate markdown into builder

Signed-off-by: Robert Günzler <r@gnzler.io>

1 files changed, 43 insertions, 29 deletions

diff --git a/src/main.zig b/src/main.zig
index 82ea8f9..1deddf3 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -76,10 +76,6 @@ const Cli = struct {
                 .handler = &Cli.build,
             },
             .{
-                .name = "mdn",
-                .handler = &Cli.markdown,
-            },
-            .{
                 .name = "gen",
                 .flags = &.{
                     .{ .name = "-f" },
@@ -109,9 +105,6 @@ const Cli = struct {
             \\  build [-f, --force] SOURCE-FILE TARGET-DIR
             \\    builds while resolving references
             \\
-            \\  mdn SOURCE-FILE TARGET-DIR
-            \\    build markdown files (using pandoc)
-            \\
             \\  gen [-f, --force] [-l, --list] ROOT-DIR TARGET-DIR
             \\    runs build for relevant files
             \\
@@ -229,11 +222,17 @@ const Cli = struct {
                 continue;
             }
 
+            // process markdown first (if required)
             if (mdn.contains(md_name)) {
                 const mdnNode = if (!DEBUG) mdnProgress.start(md_name, 0);
                 defer if (!DEBUG) mdnNode.end();
 
-                try pandoc(io, gpa, Io.Dir.cwd(), md_path, full_path);
+                var source = try File.init(io, root_dir, md_name, null);
+                defer source.close(io);
+
+                const b = try Builder.init(gpa, root_dir, source, target_dir);
+                defer b.deinit(gpa);
+                try b.build(io, gpa);
             }
 
             const htmNode = if (!DEBUG) htmProgress.start(path, 0);
@@ -246,28 +245,7 @@ const Cli = struct {
             defer b.deinit(gpa);
             try b.build(io, gpa);
         }
-    }
-
-    fn markdown(io: Io, gpa: Allocator, _: FlagSet, args: [][]const u8) !void {
-        if (args.len < 2) return Cli.usage();
-
-        const source_path = args[0];
-        const target_path = args[1];
 
-        log.info("mdn : target={s} source={s}", .{ target_path, source_path });
-
-        try pandoc(io, gpa, Io.Dir.cwd(), source_path, target_path);
-    }
-
-    // TODO: integrate into builder?
-    fn pandoc(io: Io, gpa: Allocator, root_dir: Io.Dir, source: []const u8, target: []const u8) !void {
-        const pandoc_command = try std.fmt.allocPrint(gpa,
-            \\pandoc --from=markdown+wikilinks_title_after_pipe+autolink_bare_uris --to=html5 --lua-filter=preproc.lua --strip-comments --output={s} {s}
-        , .{ target, source });
-        defer gpa.free(pandoc_command);
-
-        try root_dir.access(io, "preproc.lua", .{}); // check preproc script
-        try shell(io, pandoc_command, .{ .cwd = .{ .dir = root_dir } });
     }
 
     fn serve(io: Io, _: Allocator, _: FlagSet, args: [][]const u8) !void {
@@ -371,6 +349,11 @@ const Builder = struct {
         log.debug("{s}: building", .{self.source.path});
 
         const source_stem = std.fs.path.stem(self.source.path);
+        const source_ext = std.fs.path.extension(self.source.path);
+
+        // handle markdown files
+        if (std.mem.eql(u8, source_ext, ".md"))
+            return try self.markdown(io, gpa);
 
         // handle meta pages before even creating target_path
         if (std.mem.startsWith(u8, source_stem, "meta.tilde")) {
@@ -624,6 +607,37 @@ const Builder = struct {
         try self.finalize(gpa, target_fd);
         log.debug("{s}: done", .{self.source.path});
     }
+
+    fn markdown(self: *Builder, io: Io, gpa: Allocator) !void {
+        log.debug("mdn : {s}", .{self.source.path});
+
+        const source_stem = std.fs.path.stem(self.source.path);
+        const target_path = try std.fmt.allocPrint(gpa, "{s}.htm", .{source_stem});
+        defer gpa.free(target_path);
+
+        if (try targetExists(io, gpa, self.root_dir, target_path, self.root_dir)) return;
+        const target_fd = try self.root_dir.createFile(io, target_path, .{
+            .lock = .exclusive,
+            .read = true,
+            .truncate = true,
+        });
+        defer target_fd.close(io);
+
+        const pandoc_command = try std.fmt.allocPrint(gpa,
+            \\pandoc --from=markdown+wikilinks_title_after_pipe+autolink_bare_uris --to=html5 --lua-filter=../../preproc.lua --strip-comments --output={s} {s}
+        , .{ target_path, self.source.path });
+        defer gpa.free(pandoc_command);
+
+        try self.root_dir.access(io, "../../preproc.lua", .{}); // check preproc script
+        try shell(io, pandoc_command, .{ .cwd = .{ .dir = self.root_dir } });
+
+        // track source
+        try self.parts.append(gpa, try gpa.dupe(u8, self.source.path));
+        try self.dgsts.append(gpa, try self.source.digest());
+
+        try self.finalize(gpa, target_fd);
+        log.debug("{s}: done", .{self.source.path});
+    }
 };
 
 // helpers