60 files changed, 1141 insertions, 41 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..dc25faa
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,38 @@
+.PHONY: test build minorbump publish install clean
+
+venv/bin/tt: src/timetracker/*.py venv
+	. venv/bin/activate && \
+		python -m pip install -e .[dev]
+
+venv: pyproject.toml
+	python3 -m venv venv
+
+build: venv
+	. venv/bin/activate && \
+		python -m pip install build twine && \
+		python -m build && \
+		python -m twine check dist/*
+
+minorbump:
+	. venv/bin/activate && \
+		bumpver update --patch
+
+publish: minorbump build
+	. venv/bin/activate && \
+		twine upload dist/*
+
+install: venv
+	python -m pip install .
+
+clean:
+	rm -rf venv
+	rm -rf dist
+
+test:
+	. venv/bin/activate && \
+		black --check src && \
+		mypy src/ && \
+		pyflakes src/ && \
+		./tests/test_macro_processor.sh && \
+		./tests/test_skaldpress.sh
+
diff --git a/pyproject.toml b/pyproject.toml
index e467c66..56b91d6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ classifiers = [
 dependencies = ["markdown", "py-gfm"]
 
 [project.optional-dependencies]
-dev = ["check-manifest", "black"]
+dev = ["check-manifest", "black", "pyflakes", "mypy", "types-Markdown"]
 test = ["coverage"]
 
 [project.urls]
@@ -34,6 +34,6 @@ test = ["coverage"]
 
 [project.scripts]
 smp = "smp:main"
-#skaldpress = "skaldpress:main"
+skaldpress = "skaldpress.main:main"
 
 [tool.setuptools]
diff --git a/skaldpress.1 b/skaldpress.1
new file mode 100644
index 0000000..5ed2046
--- /dev/null
+++ b/skaldpress.1
@@ -0,0 +1,96 @@
+.TH SKALDPRESS 1 2024-06-08
+.SH name
+Skaldpress \- Templating engine
+.SH SYNOPSIS
+.B skaldpress [OPTIONS]
+
+.SH DESCRIPTION
+.B smp
+smp is a macro processor, made specifically for a usecase when doing templating of websites.
+
+
+Macros which are available using skaldpress, in addition to the builtin smp(1)-macros
+.IP "\fBtemplate(<template>,<content>)\fR"
+Will process the content using a template, in-place.
+This macro is used by the \fBall_tagged_by\fR-macro.
+
+.IP "\fBall_tagged_by(<tag_name>,<template>[,<field to sort by>][,<reversed>])\fR"
+Will output all documents which had the specified tag, using the specified template.
+If a field to sort by is specified, it will output ascending based on that field,
+or reversed if a fourth argument \fBreversed\fR is specified.
+
+.PP
+All input files can have a metadata-block at the beginning.
+Any keys will be defined as macros as \fBMETADATA_<key>\fR.
+There are a few special keys which has a specific effect:
+
+.IP "\fBskip_smp\fR"
+If this is \fItrue\fR, macro processing will be skipped for the file, and it will be
+included verbatim.
+
+.IP "\fBskip_build\fR"
+If this is \fItrue\fR, the file will not be written to build-dir, but it will be compiled and available for macros like \fBall_tagged_by\fR.
+
+.IP "\fBtags\fR"
+This is a list, and all files with entries here will be registered during the first compilation round.
+During the second compilation, macros like \fBall_tagged_by\fR will then
+make all files with the relevant content available and compile it in.
+
+.IP "\fBtarget_filename\fR"
+By default, a file will have the same name in the \fIoutput\fR-directory (unless a template has a different extension).
+This overrides the output-filename, but it keeps the file in the same directory, and it will not affect the extension.
+
+.IP "\fBtemplate\fR"
+If specified, the file will be compiled using a template.
+In the template, all \fBMETADATA_<key>\fR macros will be available,
+additionally templates can use the \fBCONTENT\fR-macro to get the expanded content of the file.
+This is recursive, meaning that templates can use other templates, with their own metadata-block,
+since it is recursive, any metadata in templates will overwrite any metadata from their children, 
+but will keep metadata that is not overwritten.
+This means templates can add additional context.
+
+.IP "\fBkeep_states\fR"
+List or string where every listed state/variable will be kept for subsequenct compilations.
+Meaning that you can e.g. construct a array in the first compilation, which is then used the second time around.
+Setting this, means that the file will always be recompiled, regardeless of other instances (unless a \fB--filter\fR is set).
+
+.SH OPTIONS
+.IP "\fB-o, --out, --output\fR \fIpath\fR
+Specifies the directory to output the compiled files to, defaults to \fIbuild\fR.
+
+.IP "\fB-i, --input\fR \fIpath\fR
+Specifies the directory where all files are iterated, defaults to \fIcontent\fR.
+
+.IP "\fB-s, --static\fR \fIpath\fR
+Specifies the directory where all files are iterated, defaults to \fIcontent\fR.
+
+.IP "\fB-t, --templates\fR \fIpath\fR
+Specifies the directory where templates are stored, defaults to \fItemplates\fR.
+
+.IP "\fB-f, --filter\fR \fIfilter\fR
+Comma-separated list of files to compile, if not specified, all files in \fB--source\fR
+will be compiled.
+
+.IP "\fB-e, --exclude\fR \fIfilter\fR
+Comma-separated list of files to exclude, if not specified, all files in \fB--source\fR
+will be compiled.
+
+.IP "\fB-m, --metadata\fR \fIkey\fR=\fIvalue\fR
+Metadata to add to compiled file, this can e.g. set a template for all files if you don't want to manually add YAML-blocks.
+Specify multiple times, to set multiple fields.
+
+.SH EXAMPLES
+
+To run skaldpress on a simple project, simply call it with no arguments
+in a directory where you have a \fBcontent\fR-directory,
+and optionally a \fBtemplates\fR-directory.
+.PP
+.nf
+.RS
+skaldpress
+.RE
+.fi
+.PP
+
+.SH SEE ALSO
+smp(1)
diff --git a/skaldpress_main.rs b/skaldpress_main.rs
new file mode 100644
index 0000000..5e6530c
--- /dev/null
+++ b/skaldpress_main.rs
@@ -0,0 +1,324 @@
+use skaldpress::macro_processor::error::SMPError;
+use skaldpress::macro_processor::macro_processor::{MacroProcessorWarning, MacroType};
+use skaldpress::skaldpress::filelists::{make_filelist, FileList, FileListFileTargetAction};
+use skaldpress::skaldpress::parseopts::{parseopts, Opts};
+use std::cmp::Ordering;
+use std::collections::HashMap;
+use std::collections::VecDeque;
+use std::fs;
+use std::path::Path;
+use std::time::Instant;
+
+use skaldpress::macro_processor::MacroProcessor;
+use skaldpress::skaldpress::error::SkaldpressError;
+use skaldpress::skaldpress::error::{
+    SP_COMPILE_FILE_EXTENSION_ERROR_2, SP_COMPILE_FILE_MACRO_PROCESS_ERROR,
+    SP_COMPILE_FILE_TEMPLATE_READ_ERROR, SP_COMPILE_TEMPLATE_MACRO_PROCESS_ERROR,
+    SP_GEN_DEST_STRIP_PREFIX_ERROR,
+};
+use skaldpress::skaldpress::metadata_parser::extract_parse_yaml_metadata;
+use skaldpress::skaldpress::metadata_parser::YamlValue;
+
+/// Convenience function for doing cmp on a metadata key of two arbitrary indexes
+/// This takes a macro_processor as input, so that it can emit warnings if the ordering failed in
+/// any way.
+fn order_index_by_cached_data(
+    smp: &mut MacroProcessor,
+    key: &str,
+    a: &usize,
+    b: &usize,
+) -> Ordering {
+    let compiled_files: &Vec<CompiledFile>;
+    unsafe {
+        compiled_files = COMPILED_FILES.as_ref();
+    }
+    if *a >= compiled_files.len() {
+        smp.warnings.push(MacroProcessorWarning::new(format!(
+            "\"a\" is not a cached file {} >= {}",
+            *a,
+            compiled_files.len()
+        )));
+        return Ordering::Equal;
+    }
+    if *b >= compiled_files.len() {
+        smp.warnings.push(MacroProcessorWarning::new(format!(
+            "\"b\" is not a cached file {} >= {}",
+            *b,
+            compiled_files.len()
+        )));
+        return Ordering::Equal;
+    }
+    let Some(a) = &compiled_files[*a].metadata.get(key) else {
+        smp.warnings.push(MacroProcessorWarning::new(format!(
+            "Key {:?} not found for ordering data in {:?}",
+            key, compiled_files[*a].source_path
+        )));
+        return Ordering::Equal;
+    };
+    let Some(b) = &compiled_files[*b].metadata.get(key) else {
+        smp.warnings.push(MacroProcessorWarning::new(format!(
+            "Key {:?} not found for ordering data in {:?}",
+            key, compiled_files[*b].source_path
+        )));
+        return Ordering::Equal;
+    };
+    a.cmp(b)
+}
+
+/// SMP Macro for getting all files with specific tag, this is only _really_ effective the second run
+///
+/// Usage in files:
+/// all_tagged_by(<tag name>, <template> [, <field to sort by>] [, reversed])
+fn sp_all_tagged_by(
+    smp: &mut MacroProcessor,
+    macro_name: &str,
+    args: &mut [String],
+) -> Result<String, SMPError> {
+    if args.len() < 1 {
+        return Ok(macro_name.to_string());
+    }
+
+    let compiled_files: &Vec<CompiledFile>;
+    let compiled_files_by_tag;
+    unsafe {
+        compiled_files_by_tag = COMPILED_FILES_BY_TAG.as_ref().unwrap();
+        compiled_files = COMPILED_FILES.as_ref();
+    }
+    let Some(tagged_files) = compiled_files_by_tag.get(&args[0]) else {
+        println!("  \x1b[35mNo tags for {}\x1b[0m", args[0]);
+        return Ok(String::new());
+    };
+
+    let mut out = String::new();
+
+    let mut tagged_files = tagged_files.clone();
+    if args.len() > 2 {
+        if args.len() > 3 && args[3] == "reversed" {
+            tagged_files.sort_by(|a, b| order_index_by_cached_data(smp, &args[2], b, a));
+        } else {
+            tagged_files.sort_by(|a, b| order_index_by_cached_data(smp, &args[2], b, a));
+        }
+    }
+
+    for doc_i in tagged_files {
+        let file = &compiled_files[doc_i];
+        let mut smp_local = smp.clone();
+        macro_processor_initialize(&file.metadata, &mut smp_local, None);
+        out.push_str(&sp_template(
+            &mut smp_local,
+            "template",
+            &mut [args[1].clone(), file.content.clone()],
+        )?);
+        print_warnings(&smp_local);
+    }
+    Ok(out)
+}
+
+fn macro_processor_initialize(
+    metadata: &HashMap<String, YamlValue>,
+    old_macro_processor: &mut MacroProcessor,
+    additional_state: Option<&HashMap<String, MacroType>>,
+) {
+    let macro_processor = old_macro_processor;
+    macro_processor.define_macro(
+        String::from("all_tagged_by"),
+        MacroType::Function(sp_all_tagged_by),
+    );
+    macro_processor.define_macro(String::from("template"), MacroType::Function(sp_template));
+    for (key, value) in metadata {
+        let macro_name = format!("METADATA_{}", key);
+        if !macro_processor.macros.contains_key(&macro_name) {
+            let value = match value {
+                YamlValue::List(l) => {
+                    let mut out = Vec::new();
+                    for el in l {
+                        out.push(MacroType::String(el.to_string()));
+                    }
+                    MacroType::Array(out)
+                }
+                value => MacroType::String(value.to_string()),
+            };
+            macro_processor.define_macro(macro_name, value);
+        }
+    }
+    if let Some(additional_state) = additional_state {
+        for (key, value) in additional_state {
+            macro_processor.define_macro(key.to_string(), value.clone());
+        }
+    }
+}
+
+fn get_template_path(template: &str, opts: &Opts) -> String {
+    format!("{}{}", opts.template_dir, template)
+}
+
+
+fn main() -> Result<(), SkaldpressError> {
+    unsafe {
+        COMPILED_FILES_BY_TAG = Some(HashMap::new());
+    }
+    let mut opts = parseopts().build();
+
+    let emptyvec: Vec<String> = Vec::new();
+    let now = Instant::now();
+    let mut filelist_dest = make_filelist(
+        &Path::new(&opts.build_dir),
+        &Path::new(&opts.build_dir),
+        &emptyvec,
+        &emptyvec,
+        FileListFileTargetAction::NONE,
+        false,
+        &opts.template_dir,
+        &opts.metadata,
+    )?;
+    let mut filelist_src = FileList::new();
+    filelist_src.extend(make_filelist(
+        &Path::new(&opts.static_dir),
+        &Path::new(&opts.static_dir),
+        &emptyvec,
+        &opts.static_exclude,
+        FileListFileTargetAction::COPY,
+        false,
+        &opts.template_dir,
+        &opts.metadata,
+    )?);
+    filelist_src.extend(make_filelist(
+        &Path::new(&opts.content_dir),
+        &Path::new(&opts.content_dir),
+        &opts.filter,
+        &opts.exclude,
+        FileListFileTargetAction::COMPILE,
+        true,
+        &opts.template_dir,
+        &opts.metadata,
+    )?);
+
+    let elapsed = now.elapsed();
+    let mut work_queue: VecDeque<(String, FileListFileTargetAction)> = VecDeque::new();
+
+    // We also will not currently discover empty directories from build target,
+    // we should attempt to do that.
+    for (filename, _file) in filelist_dest.missing_from(&filelist_src).files {
+        filelist_dest.set_action(&filename, FileListFileTargetAction::DELETE);
+        work_queue.push_back((filename, FileListFileTargetAction::DELETE));
+    }
+    for (filename, file) in filelist_src.missing_from(&filelist_dest).files {
+        work_queue.push_back((filename, file.target_action));
+    }
+    for (filename, file) in filelist_src.changed_from(&filelist_dest).files {
+        work_queue.push_back((filename, file.target_action));
+    }
+
+    let mut dependants: Vec<(String, String)> = Vec::new();
+    for (filename, file) in &filelist_src.files {
+        if !file.metadata.contains_key("dependencies") {
+            continue;
+        }
+        match file.metadata["dependencies"].clone() {
+            YamlValue::Scalar(s) => dependants.push((s, filename.clone())),
+            _ => {}
+        }
+    }
+
+    println!(
+        "Generated filelist in {:#?} seconds, {} in destination, {} in source",
+        elapsed,
+        filelist_dest.len(),
+        filelist_src.len()
+    );
+    println!("Total file actions to take {}", work_queue.len());
+
+    //let mut compiled_files: Vec<String> = Vec::with_capacity(work_queue.len());
+
+    while let Some((filename, action)) = work_queue.pop_front() {
+        println!("> {:#?} {:#?}", action, filename);
+        match action {
+            FileListFileTargetAction::DELETE => {
+                // This should be some flag that can be toggled (like with -del in rsync)
+                if false {
+                    continue;
+                }
+
+                let file = filelist_dest.files.get(&filename).expect("SP87");
+                println!("  Deleting {:#?}", file.file_path);
+                if let Err(e) = std::fs::remove_file(&file.file_path.as_path()) {
+                    println!(
+                        "\x1b[31mError copying {:#?}: {}\x1b[0m",
+                        file.file_path.as_path(),
+                        e
+                    );
+                }
+            }
+            FileListFileTargetAction::COPY => {
+                let file = filelist_src.files.get(&filename).expect("SP87");
+                let dest_file_path = Path::new(&opts.build_dir).join(file.file_rel.as_path());
+                println!("  Copying {:#?}", file.file_path);
+                println!("          {:#?}", dest_file_path);
+                let Some(dest_dir) = &dest_file_path.parent() else {
+                    println!("\x1b[31mError creating dir {:#?}\x1b[0m", dest_file_path);
+                    continue;
+                };
+                if let Err(e) = std::fs::create_dir_all(&dest_dir) {
+                    println!("\x1b[31mError creating dir {:#?}: {}\x1b[0m", dest_dir, e);
+                    continue;
+                }
+                if let Err(e) = std::fs::copy(&file.file_path.as_path(), dest_file_path) {
+                    println!(
+                        "\x1b[31mError copying {:#?}: {}\x1b[0m",
+                        file.file_path.as_path(),
+                        e
+                    );
+                }
+            }
+            FileListFileTargetAction::COMPILE => {
+                // This is a idea fo something, have not figured out how to deal with having files
+                // depending on all other files (index e.g.), as I cannot see how to get around
+                // recompiling everything anyway.
+                //
+                // I guess we could technically get away with a single compilation instead of two
+                // independent ones in some circumstances tho, unless the file needs to recompiled
+                // anyway, which would be the case for any files with TOC e.g.
+                // let file = filelist_src.files.get(&filename).expect("SP87");
+                // println!("  Compiling {:#?}", file.file_path);
+                //
+                // // check list of already compiled files, to see if all dependants are compiled
+                // // if not, move yourself to the end of the queue (basically just reinsert yourself
+                // // without compiling
+                // //
+                // // Check if the file has been compiled already, if so, it does not need to be added
+                // // to queue
+                //
+                // // If any dependants depend on this file, add them to the end of the work queue,
+                // // if they are not already there.
+                // 'dependants: for i in 0..dependants.len() {
+                //     let (pat, target) = dependants[i].clone();
+                //     if filename == target {
+                //         continue;
+                //     }
+                //     if file_pat_match(&filename, &pat) {
+                //         for (workel, _action) in &work_queue {
+                //             if workel == &target {
+                //                 continue 'dependants;
+                //             }
+                //         }
+                //         work_queue.push_back((target, action.clone()));
+                //     }
+                //
+                // }
+
+                // compiled_files.push(filename.clone());
+            }
+            FileListFileTargetAction::NONE => {}
+        }
+    }
+
+    // Running compilation twice, needed for some macros which depends on compiled content
+    // We should make some kind of file-list, and only re-compile files which has changed.
+    println!("Compiling content");
+    let _ = compile_files_in_directory(Path::new(&opts.content_dir), &opts);
+    println!("Rerun compilation");
+    opts.first_run = false;
+    let _ = compile_files_in_directory(Path::new(&opts.content_dir), &opts);
+
+    Ok(())
+}
diff --git a/smp.1 b/smp.1
new file mode 100644
index 0000000..1b616e4
--- /dev/null
+++ b/smp.1
@@ -0,0 +1,105 @@
+.TH SMP 1 2024-06-08
+.SH name
+Skaldpress Macro Processor \- Macro processor
+.SH SYNOPSIS
+.B smp [\fIinput_file\fB]
+
+.SH DESCRIPTION
+.B smp
+smp is a macro processor, made specifically for a usecase when doing templating of websites.
+
+
+.SS Macros
+.IP "\fBinclude(<file>)\fR"
+Includes a file in-place, performing macro-expansion on it.
+NOTE, THERE IS NO LOOP PROTECTION HERE!
+
+.IP "\fBinclude_varbatim(<file>)\fR"
+Same as \fBinclude\fR, but does not expand macros.
+
+.IP "\fBdefine(<macro_name> [, <macro content>])\fR"
+This defines a macro, optionally with some content.
+The optional content will be expanded immediately, 
+and later the already processed content will be included in the output.
+
+.IP "\fBifdef(<macro_name>, <output if defined> [, <output if not defined>])\fR"
+
+.IP "\fBifndef(<macro_name>, <output if not defined> [, <output if defined>])\fR"
+
+.IP "\fBifeq(<arg1>, <arg2>, <output if equal> [, <output if not equal>])\fR"
+
+.IP "\fBifneq(<arg1>, <arg2>, <output if not equal> [, <output if equal>])\fR"
+
+.IP "\fBshell(<command>)\fR"
+Runs command on shell, and includes the command output in the output
+
+.IP "\fBexpr(<arg1>, <arg2>, ..., <argN>)\fR"
+Shorthand for running the expr command, expands all arguments, and executes it on the shell.
+
+.IP "\fBdefine_array(<macro_name>)\fR"
+Defines a macro as a array, this can later be used with macros like \fBarray_push\fR and \fBarray_each\fR.
+
+.IP "\fBarray_push(<macro_name>, <value>[, <additional value(s)>])\fR"
+On a macro that is defined as a array, this will add one or more elements.
+
+.IP "\fBarray_each(<macro_name>, <template macro>])\fR"
+Push any arguments to array macro
+Process each element in a array as a macro-invokation on the second argument
+Not the best way to do this, it is not sensibly recursive.
+
+.IP "\fBarray_size(<macro_name>)\fR"
+Will return number of elements in a macro array.
+
+.IP "\fBexplode(<array_name>, <delimiter>, <input>)\fR"
+Explode a input into individual array elements.
+
+.IP "\fBformat_time(<format>, <time>)\fR"
+Format a RFC3339-timestamp to the specified format. Format is similar to strftime.
+Only available if the \fBtime\fR-feature was enabled during compilation.
+
+.IP "\fBhtml_from_markdown(<markdown>)\fR"
+If compiled with \fBmarkdown\fR, this macro will convert it's argument from markdown to html.
+It will process it's input twice before actually doing the conversion. This is to remove the outer quotes of a argument.
+So you should probably always quote arguments to this.
+
+.IP "\fBwodl(<url>)\fR"
+If compiled with \fBdeadlinks\fR, this macro will always return it's argument.
+But it will also perform a request to the link, and emit a warning if it it doesn't return HTTP 200 OK.
+This will significantly slow down compile times!
+
+.SS "\fBCompile-Time Feature Flags\fR"
+There are some compile-time flags that can enable/disable features, most are enabled by default,
+and exist either because they trigger a external dependency, or because they are unlikely to work without glibc.
+
+.IP "\fBreadline\fR" 2
+\fBEnabled by default\fR.
+Enables the use of libc readline in REPL mode. If not enabled, normal stdio will be used for input.
+
+Requires readline to be installed on the system.
+
+.IP "\fBtime\fR" 2
+\fBEnabled by default\fR.
+Enables the \fIformat_time\fR-macro, this will compile the chrono dependency to format time.
+
+.IP "\fBmarkdown\fR" 2
+\fBEnabled by default\fR.
+Enabled the \fIhtml_from_markdown\fR-macro, this will compile the markdown dependency. And can convert markdown into html.
+
+.IP "\fBdeadlinks\fR" 2
+\fBEnabled by default\fR.
+Enabled the \fIwodl\fR-macro, this will compile the minreq dependency.
+Allows testing the return code of links, and warns when the request is unsuccessful.
+
+.IP "\fBguile\fR" 2
+If compiled with guile, the macro processor supports running guile-code inline.
+This is enabled with \fI%()%\fR in the input, and anything inside the parantheses will be evaluated as guile.
+
+Requires libguile-3.0 to be installed on the system.
+
+\fBExperimental feature!\fR
+.SH OPTIONS
+If a input file is provided, that will be processed. 
+If not, a sort of interactive REPL will be started instead.
+
+.SH SEE ALSO
+skaldpress(1)
diff --git a/src/skaldpress/__init__.py b/src/skaldpress/__init__.py
new file mode 100644
index 0000000..f00b84f
--- /dev/null
+++ b/src/skaldpress/__init__.py
@@ -0,0 +1,6 @@
+__version__ = "0.0.1"
+# import skaldpress.smp_macros
+#
+# __all__ = [
+#     "skaldpress.smp_macros",
+# ]
diff --git a/src/skaldpress/file_metadata_extract.rs b/src/skaldpress/file_metadata_extract.rs
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/skaldpress/file_metadata_extract.rs
diff --git a/src/skaldpress/main.py b/src/skaldpress/main.py
new file mode 100644
index 0000000..66fd0b1
--- /dev/null
+++ b/src/skaldpress/main.py
@@ -0,0 +1,326 @@
+import os
+from argparse import ArgumentParser
+from dataclasses import dataclass
+import smp.macro_processor
+from skaldpress.metadata_parser import extract_parse_yaml_metadata
+
+
+@dataclass
+class CompiledFile:
+    content: str
+    metadata: dict
+    extension: str
+    stored_smp_state: dict
+    source_path: str
+    needs_recompilation: bool
+
+
+COMPILED_FILES: list[CompiledFile] = list()
+COMPILED_FILES_BY_TAG: dict[str, CompiledFile] = dict()
+
+
+class SkaldpressError(Exception):
+    def __init__(self, code, error, path=None):
+        self.code = code
+        self.error = error
+        self.path = path
+
+
+def sp_template(macro_processor, template, content):
+    with open(template, "r") as f:
+        file_content = f.read()
+    macro_processor.macros["CONTENT"] = content
+    return macro_processor.process_input(file_content)
+
+
+def get_template_path(template: str, opts):
+    return f"{opts.template_dir}{template}"
+
+
+def cached_file_id_by_path(source_path: str) -> int | None:
+    for i in range(len(COMPILED_FILES)):
+        if COMPILED_FILES[i] == source_path:
+            return i
+    return None
+
+
+def print_warnings(macro_processor):
+    for warning in macro_processor.warnings:
+        print(f"  \u001b[33m{warning.description}\u001b[0m")
+
+
+def file_pat_match(file: str, pat: str) -> bool:
+    if file == pat:
+        return True
+    if pat.startswith("*") and file.endswith(pat.removeprefix("*")):
+        return True
+    if pat.startswith("*") and file.endswith(pat.removeprefix("*")):
+        return True
+    return False
+
+
+def file_filtered(file: str, filters: list[str], exclude: list[str]) -> bool:
+    for filter in exclude:
+        if file_pat_match(file, filter):
+            return True
+    if len(filters) == 0:
+        return False
+    for filter in filters:
+        if file_pat_match(file, filter):
+            return False
+    return True
+
+
+def macro_processor_initialize(metadata, old_macro_processor, additional_state=None):
+    macro_processor = old_macro_processor
+    # macro_processor.define_macro("all_tagged_by", sp_all_tagged_by)
+    macro_processor.define_macro("template", sp_template)
+
+    for key, value in metadata.items():
+        macro_name = f"METADATA_{key}"
+        if macro_name not in macro_processor.macros:
+            if isinstance(value, list):
+                out = [str(el) for el in value]
+                macro_value = out
+            else:
+                macro_value = str(value)
+            macro_processor.define_macro(macro_name, macro_value)
+
+    if additional_state:
+        for key, value in additional_state.items():
+            macro_processor.define_macro(key, value)
+
+
+def extract_requested_macro_processor_state(macro_processor):
+    requested_keys = macro_processor.macros.get("METADATA_keep_states")
+    if requested_keys:
+        if isinstance(requested_keys, list):
+            requested_keys = [str(el) for el in requested_keys]
+        elif isinstance(requested_keys, str):
+            requested_keys = [str(requested_keys)]
+        else:
+            macro_processor.warnings.append(
+                "keep_states specification must be list or scalar"
+            )
+            return {}
+
+        res = {}
+        for stored_key in requested_keys:
+            stored_value = macro_processor.macros.get(stored_key)
+            if stored_value:
+                res[stored_key] = stored_value
+        return res
+    return {}
+
+
+def needs_recompilation(macro_processor):
+    if "METADATA_keep_states" in macro_processor.macros:
+        return True
+    for macro_name in macro_processor.macro_invocations:
+        if macro_name == "all_tagged_by":
+            return True
+    return False
+
+
+def wrap_template(macro_processor, template_file, file_content, opts):
+    try:
+        with open(template_file, "r") as f:
+            template = f.read()
+    except OSError as e:
+        raise SkaldpressError(1, e, template_file)
+
+    template_extension = os.path.splitext(template_file)[1][1:] or ""
+
+    template_metadata, template_content = extract_parse_yaml_metadata(template) or (
+        {},
+        template,
+    )
+
+    macro_processor_initialize(template_metadata, macro_processor, None)
+    macro_processor.define_macro_string("CONTENT", file_content)
+    try:
+        content = macro_processor.process_input(template_content)
+    except Exception as e:
+        raise SkaldpressError(2, e)
+
+    template_parent = template_metadata.get("template")
+    if not template_parent:
+        return content, template_extension
+
+    template_parent = str(template_parent)
+    print(f"  Wrapping in template {template_parent}")
+    return wrap_template(
+        macro_processor, get_template_path(template_parent, opts), content, opts
+    )
+
+
+def compile_file(file_path, opts):
+    extension = os.path.splitext(file_path)[1][1:] or ""
+    if not extension:
+        raise SkaldpressError(3, None)
+
+    try:
+        with open(file_path, "r") as f:
+            file_content = f.read()
+    except OSError as e:
+        raise SkaldpressError(1, e, file_path)
+
+    map, file_content = extract_parse_yaml_metadata(file_content) or ({}, file_content)
+    map.update(opts.metadata)
+    filename = os.path.relpath(file_path, opts.content_dir)
+    map["filename"] = os.path.splitext(filename)[0]
+
+    skip_smp = map.get("skip_smp", "").lower() == "true"
+    if opts.compilefilter and not file_filtered(file_path, opts.compilefilter, []):
+        skip_smp = True
+
+    if skip_smp:
+        return CompiledFile(
+            content=file_content,
+            metadata=map,
+            extension=extension,
+            source_path=file_path,
+            needs_recompilation=False,
+            stored_smp_state={},
+        )
+
+    stored_smp_state = None
+    cfile_i = cached_file_id_by_path(file_path)
+    if cfile_i is not None:
+        stored_smp_state = COMPILED_FILES[cfile_i].stored_smp_state
+
+    macro_processor = smp.macro_processor.MacroProcessor()
+    macro_processor_initialize(map, macro_processor, stored_smp_state)
+
+    if extension == "md":
+        file_content = f'html_from_markdown(%"{file_content}"%)'
+
+    if "template" not in map:
+        file_content = macro_processor.process_input(file_content)
+        print_warnings(macro_processor)
+        return CompiledFile(
+            content=file_content,
+            stored_smp_state=extract_requested_macro_processor_state(macro_processor),
+            metadata=map,
+            extension=extension,
+            source_path=file_path,
+            needs_recompilation=needs_recompilation(macro_processor),
+        )
+
+    template_file = get_template_path(map["template"], opts)
+    content, template_extension = wrap_template(
+        macro_processor, template_file, file_content, opts
+    )
+
+    print_warnings(macro_processor)
+    return CompiledFile(
+        content=content,
+        stored_smp_state=extract_requested_macro_processor_state(macro_processor),
+        metadata=map,
+        extension=template_extension,
+        source_path=file_path,
+        needs_recompilation=needs_recompilation(macro_processor),
+    )
+
+
+def compile_file_and_write(source_file_path, opts):
+    compiled_file = compile_file(source_file_path, opts)
+
+    if opts.first_run:
+        COMPILED_FILES.append(compiled_file)
+        cfile_i = len(COMPILED_FILES) - 1
+        cfile = COMPILED_FILES[cfile_i]
+
+        tags = cfile.metadata.get("tags")
+        if tags and isinstance(tags, list):
+            compiled_files_by_tag = COMPILED_FILES_BY_TAG
+            for tag in tags:
+                if tag not in compiled_files_by_tag:
+                    compiled_files_by_tag[tag] = []
+                compiled_files_by_tag[tag].append(cfile_i)
+    else:
+        cfile_i = cached_file_id_by_path(compiled_file.source_path)
+        COMPILED_FILES[cfile_i], compiled_file = compiled_file, COMPILED_FILES[cfile_i]
+        cfile = COMPILED_FILES[cfile_i]
+
+    skip_build = cfile.metadata.get("skip_build")
+    if skip_build and skip_build.lower() == "true":
+        return
+
+    dest_file_path = os.path.join(
+        opts.build_dir, os.path.relpath(source_file_path, opts.content_dir)
+    )
+    dest_file_path = os.path.splitext(dest_file_path)[0] + "." + cfile.extension
+
+    target_filename = cfile.metadata.get("target_filename")
+    if target_filename and isinstance(target_filename, str):
+        dest_file_path = os.path.join(
+            os.path.dirname(dest_file_path), target_filename + "." + cfile.extension
+        )
+
+    dest_dir = os.path.dirname(dest_file_path)
+    os.makedirs(dest_dir, exist_ok=True)
+
+    print(f"> Writing {source_file_path} to {dest_file_path}")
+    with open(dest_file_path, "w") as f:
+        f.write(cfile.content)
+
+
+def compile_files_in_directory(directory, opts):
+    try:
+        entries = os.listdir(directory)
+    except OSError as e:
+        raise Exception(f"Error 8 {e} {directory}")
+
+    for entry in entries:
+        path = os.path.join(directory, entry)
+        # try:
+        #     metadata = os.stat(path)
+        # except OSError as e:
+        #     print(f"\033[31mError getting file metadata {e}\033[0m")
+        #     continue
+
+        needs_recompilation = False
+        cfile_i = cached_file_id_by_path(path)
+        if cfile_i is not None:
+            needs_recompilation = COMPILED_FILES[cfile_i].needs_recompilation
+
+        should_compile = (opts.first_run or needs_recompilation) and not file_filtered(
+            path, opts.filter, opts.exclude
+        )
+        if os.path.isfile(path) and should_compile:
+            print(f"< Compiling {path}")
+            try:
+                compile_file_and_write(path, opts)
+            except Exception as e:
+                print(f"\033[31mError compiling {path}: {e}\033[0m")
+                raise e
+        elif os.path.isdir(path):
+            try:
+                compile_files_in_directory(path, opts)
+            except SkaldpressError as e:
+                print(f"\033[31mError processing directory {path}: {e}\033[0m")
+
+
+def main():
+    parser = ArgumentParser()
+    parser.add_argument(
+        "-o", "--out", "--output", metavar="path", default="build/", dest="build_dir"
+    )
+    parser.add_argument(
+        "-i", "--input", metavar="path", default="content/", dest="content_dir"
+    )
+    parser.add_argument("-s", "--static", metavar="path", default="static/")
+    parser.add_argument(
+        "-t", "--templates", metavar="path", default="templates/", dest="template_dir"
+    )
+    parser.add_argument("-f", "--filter", metavar="filter", default=[])
+    parser.add_argument("-e", "--exclude", metavar="filter", default=[])
+    parser.add_argument("-m", "--metadata", nargs="+", metavar="key=value", default=[])
+    parser.add_argument("-c", "--compilefilter", metavar="filter", default=[])
+    parser.add_argument("-x", "--xclude", metavar="filter", default=[])
+    args = parser.parse_args()
+
+    args.first_run = True
+
+    compile_files_in_directory(args.content_dir, args)
diff --git a/src/skaldpress/metadata_parser.py b/src/skaldpress/metadata_parser.py
new file mode 100644
index 0000000..28cab31
--- /dev/null
+++ b/src/skaldpress/metadata_parser.py
@@ -0,0 +1,74 @@
+import datetime
+from typing import Any
+
+
+def str_to_yaml_value(in_str: str) -> Any:
+    in_str = in_str.strip()
+
+    try:
+        return int(in_str)
+    except:
+        pass
+
+    try:
+        return datetime.datetime.strptime(in_str, "%Y-%m-%dT%H:%M:%S%z")
+    except:
+        pass
+
+    return str(in_str)
+
+
+def extract_parse_yaml_metadata(file_content, newline="\n") -> tuple[dict, str]:
+    file_lines = file_content.split(newline)
+    if len(file_lines) < 1:
+        return {}, file_content
+
+    if next(iter(file_lines)).strip() != "---":
+        return {}, file_content
+
+    yaml_map: dict[str, Any] = {}
+    yaml_started = yaml_ended = False
+    end_index = 0
+    current_key = None
+    current_list = list()
+
+    for i, line in enumerate(file_lines):
+        if line.strip() == "---":
+            if yaml_started:
+                yaml_ended = True
+                end_index = sum(
+                    map(
+                        lambda x: len(x) + len(newline),
+                        file_content.split(newline)[: i + 1],
+                    )
+                )
+                break
+            else:
+                yaml_started = True
+        elif yaml_started and not yaml_ended:
+            if line.strip().startswith("-") and current_key is not None:
+                current_list.append(line.strip().lstrip("-").strip())
+            elif ":" in line:
+                key, value = line.split(":", 1)
+                if current_key is not None:
+                    if len(current_list) > 0:
+                        yaml_map[key] = current_list
+                        current_list = list()
+
+                current_key = key.strip()
+                if value.strip() != "":
+                    yaml_map[current_key] = str_to_yaml_value(value.strip())
+                    current_key = None
+
+    if current_key is not None:
+        if len(current_list) > 0:
+            yaml_map[current_key] = current_list
+
+    if not yaml_ended:
+        end_index = len(file_content)
+
+    if "publish_date" in yaml_map:
+        if "change_date" not in yaml_map:
+            yaml_map["change_date"] = yaml_map["publish_date"]
+
+    return yaml_map, file_content[end_index:]
diff --git a/src/skaldpress/smp_macros.py b/src/skaldpress/smp_macros.py
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/skaldpress/smp_macros.py
@@ -0,0 +1 @@
+
diff --git a/src/smp/__init__.py b/src/smp/__init__.py
index 63cecaf..22085ae 100644
--- a/src/smp/__init__.py
+++ b/src/smp/__init__.py
@@ -2,6 +2,11 @@ __version__ = "0.0.1"
 import smp.macro_processor
 import smp.builtins
 
+__all__ = [
+    "smp.macro_processor",
+    "smp.builtins",
+]
+
 
 def repl():
     print("=Skaldpress Macro Processor (REPL)")
@@ -15,8 +20,8 @@ def read_stdin():
     import sys
 
     data = sys.stdin.read()
-    smp = macro_processor.MacroProcessor()
-    res = smp.process_input(data)
+    macro_processor = smp.macro_processor.MacroProcessor()
+    res = macro_processor.process_input(data)
     print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━", file=sys.stderr)
     print(res)
 
@@ -39,7 +44,7 @@ def main():
     with open(sys.argv[1], "r") as f:
         file_content = f.read()
 
-    smp = macro_processor.MacroProcessor()
-    res = smp.process_input(file_content)
+    macro_processor = smp.macro_processor.MacroProcessor()
+    res = macro_processor.process_input(file_content)
     print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━", file=sys.stderr)
     print(res)
diff --git a/src/smp/builtins.py b/src/smp/builtins.py
index f463a24..9a27864 100644
--- a/src/smp/builtins.py
+++ b/src/smp/builtins.py
@@ -1,10 +1,10 @@
-import smp.exceptions
+# import smp.exceptions
 import subprocess
 import urllib.request
 import urllib.error
 import datetime
 import markdown
-from gfm import AutolinkExtension, TaskListExtension
+from gfm import AutolinkExtension, TaskListExtension  # type: ignore
 
 
 def smp_builtin_define(macro_processor, macro_name, macro_value=None):
@@ -147,7 +147,7 @@ def smp_builtin_html_from_markdown(macro_processor, text, extensions=list()):
 
 
 global LINK_CACHE
-LINK_CACHE = dict()
+LINK_CACHE: dict[str, tuple[bool, int, str]] = dict()
 
 
 def smp_builtin_wodl(macro_processor, link, timeout_seconds=5):
diff --git a/src/smp/macro_processor.py b/src/smp/macro_processor.py
index e85fbe9..8fa9d91 100644
--- a/src/smp/macro_processor.py
+++ b/src/smp/macro_processor.py
@@ -41,6 +41,8 @@ class MacroProcessor:
     warnings: list[Any]
     """ Global environment for python execution """
     py_global_env: dict
+    py_local_env_alt: dict
+    py_local_env_current: dict
 
     special_macros: dict[str, tuple[Any, Any]]
 
@@ -49,32 +51,40 @@ class MacroProcessor:
         self.macro_invocations = list()
         self.warnings = list()
         self.py_global_env = dict()
-        self._define_builtins(prefix=prefix)
-
-    def _define_builtins(self, prefix=""):
-        self.macros[f"{prefix}define"] = smp.builtins.smp_builtin_define
-        self.macros[f"{prefix}undefine"] = smp.builtins.smp_builtin_undefine
-        self.macros[f"{prefix}define_array"] = smp.builtins.smp_builtin_define_array
-        self.macros[f"{prefix}ifdef"] = smp.builtins.smp_builtin_ifdef
-        self.macros[f"{prefix}ifndef"] = smp.builtins.smp_builtin_ifndef
-        self.macros[f"{prefix}ifeq"] = smp.builtins.smp_builtin_ifeq
-        self.macros[f"{prefix}ifneq"] = smp.builtins.smp_builtin_ifneq
-        self.macros[f"{prefix}include"] = smp.builtins.smp_builtin_include
-        self.macros[f"{prefix}include_verbatim"] = (
-            smp.builtins.smp_builtin_include_verbatim
-        )
-        self.macros[f"{prefix}shell"] = smp.builtins.smp_builtin_shell
-        self.macros[f"{prefix}dumpenv"] = smp.builtins.smp_builtin_dumpenv
-        self.macros[f"{prefix}eval"] = smp.builtins.smp_builtin_eval
-        self.macros[f"{prefix}array_push"] = smp.builtins.smp_builtin_array_push
-        self.macros[f"{prefix}array_each"] = smp.builtins.smp_builtin_array_each
-        self.macros[f"{prefix}array_size"] = smp.builtins.smp_builtin_array_size
-        self.macros[f"{prefix}explode"] = smp.builtins.smp_builtin_explode
-        self.macros[f"{prefix}format_time"] = smp.builtins.smp_builtin_format_time
-        self.macros[f"{prefix}html_from_markdown"] = (
-            smp.builtins.smp_builtin_html_from_markdown
-        )
-        self.macros[f"{prefix}wodl"] = smp.builtins.smp_builtin_wodl
+        self.py_local_env_alt = dict()
+        self.py_local_env_current = self.macros
+        self.indent_level = ""
+
+        self._define_builtins(self.macros, prefix=prefix)
+        self._define_builtins(self.py_local_env_alt, prefix=prefix)
+
+    def _define_builtins(self, env, prefix=""):
+        env[f"{prefix}macro_processor"] = self
+        env[f"{prefix}define"] = smp.builtins.smp_builtin_define
+        env[f"{prefix}undefine"] = smp.builtins.smp_builtin_undefine
+        env[f"{prefix}define_array"] = smp.builtins.smp_builtin_define_array
+        env[f"{prefix}ifdef"] = smp.builtins.smp_builtin_ifdef
+        env[f"{prefix}ifndef"] = smp.builtins.smp_builtin_ifndef
+        env[f"{prefix}ifeq"] = smp.builtins.smp_builtin_ifeq
+        env[f"{prefix}ifneq"] = smp.builtins.smp_builtin_ifneq
+        env[f"{prefix}include"] = smp.builtins.smp_builtin_include
+        env[f"{prefix}include_verbatim"] = smp.builtins.smp_builtin_include_verbatim
+        env[f"{prefix}shell"] = smp.builtins.smp_builtin_shell
+        env[f"{prefix}dumpenv"] = smp.builtins.smp_builtin_dumpenv
+        env[f"{prefix}eval"] = smp.builtins.smp_builtin_eval
+        env[f"{prefix}array_push"] = smp.builtins.smp_builtin_array_push
+        env[f"{prefix}array_each"] = smp.builtins.smp_builtin_array_each
+        env[f"{prefix}array_size"] = smp.builtins.smp_builtin_array_size
+        env[f"{prefix}explode"] = smp.builtins.smp_builtin_explode
+        env[f"{prefix}format_time"] = smp.builtins.smp_builtin_format_time
+        env[f"{prefix}html_from_markdown"] = smp.builtins.smp_builtin_html_from_markdown
+        env[f"{prefix}wodl"] = smp.builtins.smp_builtin_wodl
+
+    def define_macro_string(self, macro_name, macro_value):
+        self.define_macro(macro_name, str(macro_value))
+
+    def define_macro(self, macro_name, macro_value):
+        self.macros[macro_name] = macro_value
 
     def expand_macro(self, macro_name: str, args: list[str] = list()) -> str:
         # Ignore trailing underscore in macro name, the parser will pop a space in front if
@@ -104,14 +114,18 @@ class MacroProcessor:
 
         if callable(macro):
             signature = inspect.signature(macro)
-            macro_args = []
+            macro_args: list[Any] = []
             if (
                 "macro_processor" in signature.parameters
                 or "smp" in signature.parameters
             ):
                 macro_args.append(self)
             macro_args.extend(args)
-            return str(macro(*macro_args))
+            try:
+                return str(macro(*macro_args))
+            except Exception as e:
+                s = f"{macro_name}({','.join([repr(x) for x in macro_args])})"
+                raise Exception(s)
         if isinstance(macro, str):
             expanded = macro
             for i, arg in enumerate(args):
@@ -143,8 +157,11 @@ class MacroProcessor:
 
         skip_next_line_ending = False
 
+        line_begin = True
+
         # We should keep track of filename, linenumber, and character number on line here
         # So we can give sensible error messages
+        # Probably add to python stack trace?
 
         quote_level = 0
         parens_level = 0
@@ -153,7 +170,6 @@ class MacroProcessor:
         while i < len(input):
             c = input[i]
             peek = None if i + 1 >= len(input) else input[i + 1]
-
             # import sys
             # print(f"[{i:4}] {repr(c):4} -> {repr(peek):4} [{state}] = {repr(output)}", file=sys.stderr)
 
@@ -264,7 +280,7 @@ class MacroProcessor:
                     try:
                         f = StringIO()
                         with redirect_stdout(f):
-                            exec(py_expr, self.py_global_env, self.macros)
+                            exec(py_expr, self.py_global_env, self.py_local_env_current)
                         s = f.getvalue()
                         if s != "":
                             output += s
diff --git a/tests/skaldpress/content/article.md b/tests/skaldpress/content/article.md
new file mode 100644
index 0000000..b20468c
--- /dev/null
+++ b/tests/skaldpress/content/article.md
@@ -0,0 +1,11 @@
+---
+title: Example-article
+target_filename: example-article
+template: article.html
+publish_date: 2025-01-01T00:00:00Z
+summary: A short example article
+tags:
+  - article
+---
+
+This is a example article
diff --git a/tests/skaldpress/templates/article.html b/tests/skaldpress/templates/article.html
new file mode 100644
index 0000000..cb3b58b
--- /dev/null
+++ b/tests/skaldpress/templates/article.html
@@ -0,0 +1,22 @@
+---
+template: base.html
+table_of_contents: true
+keep_states:
+  - TOC_ITEMS
+---
+DNL include(templates/common_macros.smp)DNL
+<header>
+    <h1>METADATA_title</h1>
+</header>
+
+<main>
+    <div class="article-meta">
+        <span>Published <time datetime="METADATA_publish_date">format_time(%d %B %Y,METADATA_publish_date)</time></span>
+        ifneq(METADATA_change_date, METADATA_publish_date,DNL
+            (<span>Changed <time datetime="METADATA_change_date">format_time(%d %B %Y,METADATA_change_date)</time></span>) DNL
+        )
+    </div>
+
+    CONTENT
+</main>
+
diff --git a/tests/skaldpress/templates/base.html b/tests/skaldpress/templates/base.html
new file mode 100644
index 0000000..aa73ffc
--- /dev/null
+++ b/tests/skaldpress/templates/base.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+    <body>
+        <nav>
+            <a href="/">Home</a>
+        </nav>
+
+        CONTENT
+
+        <footer>
+        </footer>
+    </body>
+</html>
+
diff --git a/tests/input_files/array_each_1 b/tests/smp/array_each_1
index 5844d71..5844d71 100644
--- a/tests/input_files/array_each_1
+++ b/tests/smp/array_each_1
diff --git a/tests/input_files/array_push_1 b/tests/smp/array_push_1
index fb59320..fb59320 100644
--- a/tests/input_files/array_push_1
+++ b/tests/smp/array_push_1
diff --git a/tests/input_files/array_push_2 b/tests/smp/array_push_2
index 3b4d652..3b4d652 100644
--- a/tests/input_files/array_push_2
+++ b/tests/smp/array_push_2
diff --git a/tests/input_files/array_push_3 b/tests/smp/array_push_3
index 60417b4..60417b4 100644
--- a/tests/input_files/array_push_3
+++ b/tests/smp/array_push_3
diff --git a/tests/input_files/define_1 b/tests/smp/define_1
index 68002ea..68002ea 100644
--- a/tests/input_files/define_1
+++ b/tests/smp/define_1
diff --git a/tests/input_files/define_2 b/tests/smp/define_2
index 016294a..016294a 100644
--- a/tests/input_files/define_2
+++ b/tests/smp/define_2
diff --git a/tests/input_files/dnl_1 b/tests/smp/dnl_1
index c12bc01..c12bc01 100644
--- a/tests/input_files/dnl_1
+++ b/tests/smp/dnl_1
diff --git a/tests/input_files/dnl_2 b/tests/smp/dnl_2
index 356aee9..356aee9 100644
--- a/tests/input_files/dnl_2
+++ b/tests/smp/dnl_2
diff --git a/tests/input_files/dnl_3 b/tests/smp/dnl_3
index 356aee9..356aee9 100644
--- a/tests/input_files/dnl_3
+++ b/tests/smp/dnl_3
diff --git a/tests/input_files/dnl_4 b/tests/smp/dnl_4
index 67c1c0e..67c1c0e 100644
--- a/tests/input_files/dnl_4
+++ b/tests/smp/dnl_4
diff --git a/tests/input_files/explode_1 b/tests/smp/explode_1
index 79b70ba..79b70ba 100644
--- a/tests/input_files/explode_1
+++ b/tests/smp/explode_1
diff --git a/tests/input_files/explode_2 b/tests/smp/explode_2
index 7ef0c08..7ef0c08 100644
--- a/tests/input_files/explode_2
+++ b/tests/smp/explode_2
diff --git a/tests/input_files/format_time_1 b/tests/smp/format_time_1
index bd9a097..bd9a097 100644
--- a/tests/input_files/format_time_1
+++ b/tests/smp/format_time_1
diff --git a/tests/input_files/ifdef_1 b/tests/smp/ifdef_1
index a308141..a308141 100644
--- a/tests/input_files/ifdef_1
+++ b/tests/smp/ifdef_1
diff --git a/tests/input_files/ifdef_2 b/tests/smp/ifdef_2
index ecef66c..ecef66c 100644
--- a/tests/input_files/ifdef_2
+++ b/tests/smp/ifdef_2
diff --git a/tests/input_files/ifdef_3 b/tests/smp/ifdef_3
index 4867034..4867034 100644
--- a/tests/input_files/ifdef_3
+++ b/tests/smp/ifdef_3
diff --git a/tests/input_files/ifeq_1 b/tests/smp/ifeq_1
index 3e49f68..3e49f68 100644
--- a/tests/input_files/ifeq_1
+++ b/tests/smp/ifeq_1
diff --git a/tests/input_files/ifeq_2 b/tests/smp/ifeq_2
index fe7c0ac..fe7c0ac 100644
--- a/tests/input_files/ifeq_2
+++ b/tests/smp/ifeq_2
diff --git a/tests/input_files/ifeq_3 b/tests/smp/ifeq_3
index 42646b8..42646b8 100644
--- a/tests/input_files/ifeq_3
+++ b/tests/smp/ifeq_3
diff --git a/tests/input_files/ifeq_4 b/tests/smp/ifeq_4
index d069530..d069530 100644
--- a/tests/input_files/ifeq_4
+++ b/tests/smp/ifeq_4
diff --git a/tests/input_files/ifndef_1 b/tests/smp/ifndef_1
index 857204b..857204b 100644
--- a/tests/input_files/ifndef_1
+++ b/tests/smp/ifndef_1
diff --git a/tests/input_files/ifndef_2 b/tests/smp/ifndef_2
index fbe0ba3..fbe0ba3 100644
--- a/tests/input_files/ifndef_2
+++ b/tests/smp/ifndef_2
diff --git a/tests/input_files/ifndef_3 b/tests/smp/ifndef_3
index 82a180d..82a180d 100644
--- a/tests/input_files/ifndef_3
+++ b/tests/smp/ifndef_3
diff --git a/tests/input_files/ifneq_1 b/tests/smp/ifneq_1
index 5b443c5..5b443c5 100644
--- a/tests/input_files/ifneq_1
+++ b/tests/smp/ifneq_1
diff --git a/tests/input_files/ifneq_2 b/tests/smp/ifneq_2
index 8145e9f..8145e9f 100644
--- a/tests/input_files/ifneq_2
+++ b/tests/smp/ifneq_2
diff --git a/tests/input_files/ifneq_3 b/tests/smp/ifneq_3
index 163d871..163d871 100644
--- a/tests/input_files/ifneq_3
+++ b/tests/smp/ifneq_3
diff --git a/tests/input_files/ifneq_4 b/tests/smp/ifneq_4
index c93a572..c93a572 100644
--- a/tests/input_files/ifneq_4
+++ b/tests/smp/ifneq_4
diff --git a/tests/input_files/include_1 b/tests/smp/include_1
index 1621de2..1621de2 100644
--- a/tests/input_files/include_1
+++ b/tests/smp/include_1
diff --git a/tests/input_files/include_2 b/tests/smp/include_2
index 2714eff..2714eff 100644
--- a/tests/input_files/include_2
+++ b/tests/smp/include_2
diff --git a/tests/input_files/markdown_html_1 b/tests/smp/markdown_html_1
index 6a9f143..6a9f143 100644
--- a/tests/input_files/markdown_html_1
+++ b/tests/smp/markdown_html_1
diff --git a/tests/input_files/markdown_html_2 b/tests/smp/markdown_html_2
index 6a9f143..6a9f143 100644
--- a/tests/input_files/markdown_html_2
+++ b/tests/smp/markdown_html_2
diff --git a/tests/input_files/non_macro_html b/tests/smp/non_macro_html
index 6f49b4a..6f49b4a 100644
--- a/tests/input_files/non_macro_html
+++ b/tests/smp/non_macro_html
diff --git a/tests/input_files/shell_1 b/tests/smp/shell_1
index 3eb1f14..3eb1f14 100644
--- a/tests/input_files/shell_1
+++ b/tests/smp/shell_1
diff --git a/tests/input_files/snnl_1 b/tests/smp/snnl_1
index 47a10b9..47a10b9 100644
--- a/tests/input_files/snnl_1
+++ b/tests/smp/snnl_1
diff --git a/tests/input_files/snnl_2 b/tests/smp/snnl_2
index 2fcd0ba..2fcd0ba 100644
--- a/tests/input_files/snnl_2
+++ b/tests/smp/snnl_2
diff --git a/tests/input_files/snnl_3 b/tests/smp/snnl_3
index 4a7dad7..4a7dad7 100644
--- a/tests/input_files/snnl_3
+++ b/tests/smp/snnl_3
diff --git a/tests/input_files/whitespace_deleting_1 b/tests/smp/whitespace_deleting_1
index ccda45f..ccda45f 100644
--- a/tests/input_files/whitespace_deleting_1
+++ b/tests/smp/whitespace_deleting_1
diff --git a/tests/input_files/whitespace_deleting_2 b/tests/smp/whitespace_deleting_2
index 8777c39..8777c39 100644
--- a/tests/input_files/whitespace_deleting_2
+++ b/tests/smp/whitespace_deleting_2
diff --git a/tests/input_files/wodl_1 b/tests/smp/wodl_1
index 6466022..6466022 100644
--- a/tests/input_files/wodl_1
+++ b/tests/smp/wodl_1
diff --git a/tests/input_files/wodl_2 b/tests/smp/wodl_2
index 51be3e1..51be3e1 100644
--- a/tests/input_files/wodl_2
+++ b/tests/smp/wodl_2
diff --git a/tests/test_macro_processor.sh b/tests/test_macro_processor.sh
index 1a7accd..daee5d2 100755
--- a/tests/test_macro_processor.sh
+++ b/tests/test_macro_processor.sh
@@ -3,7 +3,7 @@
 ALL_OUTPUT=0
 
 test () {
-    file_content=$(<tests/input_files/$1)
+    file_content=$(<tests/smp/$1)
     readarray -t sections < <(awk -v RS="---" '{print}' <<< "$file_content")
     var1=$(echo "$file_content" | awk -v RS="\n---\n" 'NR==1')
     var2=$(echo "$file_content" | awk -v RS="\n---\n" 'NR==2')
@@ -36,7 +36,7 @@ if [ "$#" -eq 1 ]; then
     ALL_OUTPUT=1
     test $1
 else
-    for file in tests/input_files/*; do
+    for file in tests/smp/*; do
         test "$(basename $file)"
     done
 fi
diff --git a/tests/test_skaldpress.sh b/tests/test_skaldpress.sh
new file mode 100755
index 0000000..4e57a44
--- /dev/null
+++ b/tests/test_skaldpress.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+cd tests/skaldpress
+rm -rf build
+mkdir -p build
+
+skaldpress
diff --git a/tests/test_unittests.sh b/tests/test_unittests.sh
new file mode 100755
index 0000000..802cc49
--- /dev/null
+++ b/tests/test_unittests.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+ALL_OUTPUT=0
+
+test () {
+    python tests/unit_tests/$1
+    if [ "$?" -eq "1" ]; then
+        tput setaf 1
+        echo "$1 NOT OK:"
+        tput sgr0
+        exit 1
+    else
+        tput setaf 2
+        echo "$1 OK"
+        tput sgr0
+    fi
+}
+
+if [ "$#" -eq 1 ]; then
+    ALL_OUTPUT=1
+    test $1
+else
+    for file in tests/unit_tests/*; do
+        test "$(basename $file)"
+    done
+fi
+
diff --git a/tests/unit_tests/metadata_parser_1.py b/tests/unit_tests/metadata_parser_1.py
new file mode 100644
index 0000000..6465845
--- /dev/null
+++ b/tests/unit_tests/metadata_parser_1.py
@@ -0,0 +1,28 @@
+import datetime
+from skaldpress.metadata_parser import extract_parse_yaml_metadata
+
+res = extract_parse_yaml_metadata("""---
+title: Example-article
+target_filename: example-article
+template: article.html
+publish_date: 2025-01-01T00:00:00Z
+summary: A short example article
+num: 2
+tags:
+  - article
+---
+Article content
+""")
+
+meta = {
+    "title": "Example-article",
+    "target_filename": "example-article",
+    "template": "article.html",
+    "publish_date": datetime.datetime(2025, 1, 1, 0, 0, tzinfo=datetime.timezone.utc),
+    "change_date": datetime.datetime(2025, 1, 1, 0, 0, tzinfo=datetime.timezone.utc),
+    "summary": "A short example article",
+    "num": 2,
+    "tags": ["article"]
+}
+assert res[0] == meta
+assert res[1] == "Article content\n"