better config format

course, it does nothing right now

.vim/ftplugin/rust.vim

@@ -1,7 +1,10 @@
-if !has('nvim')
+" f5 runs the current project
-  nnoremap <buffer> <C-]> :ALEGoToDefinition<CR>
+nmap <F5> :!clear<CR>:!cargo run -q<CR>
-endif
+nmap <S-F5> :!clear<CR>:!cargo run<CR>
 
-nnoremap <F5> :Cargo run<CR>
+" ctrl-f5 lets you run the current program but prompts you for the cli args
+nmap <C-F5> :!clear<CR>:!cargo run -- 
 
-let g:rustfmt_autosave = 1
+nmap <F6> :!clear<CR>:!cargo run<CR>
+nmap <F7> :!clear<CR>:!cargo check<CR>
+nmap <F8> :!clear<CR>:!cargo test<CR>

config.ini

@@ -1,7 +1,7 @@
 # items in the [home] section are copied into the home directory with the same
 # relative location as they appear in the dotfiles repo
 [home]
-files=
+files:
   # sync vim plugin directories but not all of .vim
   .vim/ftplugin
   .vim/pack
@@ -9,26 +9,38 @@ files=
   # individual files to sync
   .bash_profile
   .bashrc
+  .vimrc
+
+  cargo-config.toml > .cargo/config.toml
+
+[home posix]
+when: not host.is_windows
+
+files:
   .screenrc
   .tmux.conf
-    .vimrc
-    .config/htop/htoprc
   .config/lazydocker/config.yml
+  .config/htop/htoprc
+
+  nvim/init.vim > .config/nvim/init.vim
+
+[home wsl]
+when: host.is_wsl
+
+files:
+  scripts/winmode > bin/winmode
+
+[link-files AppData]
+when: host.is_windows
+
+target_root: ~/AppData/Local
+
+files:
+  nvim/lua
+
+  .vimrc        > nvim/init.vim
+  Vundle.vim    > nvim/bundle/Vundle.vim
+  .vim/ftplugin > nvim/ftplugin
+  packer.nvim   > nvim-data/site/pack/packer/start/packer.nvim
 
-# items in map.posix define a place where config files will be placed on posix
+# [cargo:gitui]
-# systems relative to the user's home directory
-[map.posix]
-nvim/init.vim=.config/nvim/init.vim
-scripts/winmode=bin/winmode
-
-# items in the map.windows section defines a place where config files will be
-# placed on windows, relative to the user's home directory
-[map.windows]
-.vimrc=AppData/Local/nvim/init.vim
-Vundle.vim=AppData/Local/nvim/bundle/Vundle.vim
-.vim/ftplugin=AppData/Local/nvim/ftplugin
-packer.nvim=AppData/Local/nvim-data/site/pack/packer/start/packer.nvim
-nvim/lua=AppData/Local/nvim/lua
-cargo-config.toml=.cargo/config.toml
-
-[cargo:gitui]

install

@@ -3,6 +3,6 @@
 installs preferences
 """
 
-from prefs import Installer
+from prefs.installer import Installer
 installer = Installer()
 installer.run()

prefs/__init__.py

@@ -1,5 +0,0 @@
-"""
-prefs is a preferences manager
-"""
-
-from .installer import Installer

prefs/home.py

@@ -1,33 +1,32 @@
-class Home:
+from . import host
-    def __init__(self, label = None):
+from .linker import Linker
-        self.label = label
 
-    @classmethod
+class Home:
-    def from_name(cls, name):
+    resource_name = 'home'
-        """
-        Builds a Home struct from a given name
-        """
-        if name.startswith('home'):
-            label = name.removeprefix('home').strip()
-            return cls(label)
-        return None
 
-    def parse_section(self, section):
+    def __init__(self, label, section):
-        mapping = {
+        self.label = label or None
-            'files': self.parse_files
+        self.parse_files(section.get('files', ''))
-        }
-        for key in section:
-            if fn := mapping.get(key):
-                val = section[key]
-                fn(val)
-            else:
-                raise KeyError(f"Home has no such config key: {key}")
 
     def parse_files(self, text):
+        self.files = []
         lines = [s for s in text.splitlines() if s]
-        print(f"      parse_files: {lines}")
+        for line in lines:
+            parts = line.split(">", 2)
+            if len(parts) == 1:
+                pair = (parts[0].strip(), parts[0].strip())
+            else:
+                pair = (parts[0].strip(), parts[1].strip())
+            self.files.append(pair)
 
     def __repr__(self):
         if self.label:
             return f'<Home: {self.label}>'
         return '<Home>'
+
+    def run(self):
+        linker = Linker(host.dotfiles_root, host.home)
+        for pair in self.files:
+            source_path = host.dotfiles_root / pair[0]
+            target_path = host.home / pair[1]
+            linker.link(source_path, target_path)

prefs/host.py

@@ -10,7 +10,7 @@ import sys
 import pathlib
 from functools import cached_property
 
-class _Host:
+class Host:
     """
     hacking the python module system a little to make the module look like a
     singleton object so that it can have properties
@@ -54,5 +54,11 @@ class _Host:
         here = pathlib.Path(os.path.realpath(__file__))
         return here.parent.parent
 
+    @property
+    def home(self):
+        """
+        the home directory
+        """
+        return pathlib.Path.home()
 
-sys.modules[__name__] = _Host()
+sys.modules[__name__] = Host()

prefs/installer.py

@@ -26,105 +26,18 @@ class Installer:
             parser.optionxform = str
             parser.read_file(config_file)
             return parser
-            self._config = parser
 
     def run(self):
-        """
+        resources = []
-        runs the install process
+        for name in self.config.sections():
-        """
+            section = self.config[name]
-        if self.options.x:
+            if self.when(section):
-            self.run_x()
+                r = Resource.from_section(name, section)
-            return
+                resources.append(r)
-
+        for r in resources:
-        if host.is_windows and not host.is_admin:
+            r.run()
-            print("You are not admin: admin is required on Windows")
+
-            sys.exit(1)
+    def when(self, section):
-
+        if clause := section.get('when', None):
-        config = self.config
+            return eval(clause)
-        for section_name in config.sections():
+        return True
-            try:
-                T = self.parse_section_name(section_name)
-            except ValueError as e:
-                print(f"error reading section: {e}")
-                continue
-            section = T.from_section(section_name, **config[section_name])
-            print(f"Section: {section}")
-            section.run()
-
-        print("linking in home files")
-        home = self.options.config['home']
-        home_files = filter(None, home['files'].splitlines())
-        for fname in home_files:
-            print(f"\n{fname}")
-            path = pathlib.Path(fname)
-            self.map_file(path, path)
-
-        if host.is_linux:
-            self.map_section('map.posix')
-            self.map_section('map.windows')
-
-        if host.is_windows:
-            self.map_section('map.windows')
-
-    def run_x(self):
-        for section_name in self.config.sections():
-            print("sections:")
-            print(f"  {section_name}")
-            if r := Resource.from_name(section_name):
-                print(f"  {r}")
-                r.parse_section(self.config[section_name])
-
-    @cached_property
-    def targets(self):
-        """
-        defines all of the places where preferences files will be installed
-        """
-        if host.is_linux:
-            return [targets.Linux()]
-
-        if host.is_windows:
-            return [targets.Windows()]
-
-        return []
-
-    def map_file(self, source_path, target_path):
-        if not source_path.is_absolute():
-            source_path = host.dotfiles_root / source_path
-
-        print(f"source path: {source_path}")
-        print(f"source drive: {source_path.drive}")
-        if not source_path.exists():
-            print("skip: no such file\n")
-            return
-
-        for target in self.targets:
-            target.map_file(source_path, target_path)
-
-    @property
-    def config_path(self):
-        # pylint: disable=missing-function-docstring
-        return self.options.config
-
-    # @cached_property
-    # def config(self):
-    #     """
-    #     the contents of our configuration file
-    #     """
-    #     with open(self.config_path, 'r', encoding='utf-8') as config_fp:
-    #         log.debug("loading config from path %s", self.config_path)
-    #         return json.load(config_fp)
-
-    def map_section(self, section_name):
-        section = self.options.config[section_name]
-        for source_name in section:
-            target_name = section[source_name]
-            source_path = pathlib.Path(source_name)
-            target_path = pathlib.Path(target_name)
-            print(f"Map {source_path} to {target_path}")
-            self.map_file(source_path, target_path)
-
-    def parse_section_name(self, section_name):
-        if section_name == "home":
-            return sections.Home
-        raise ValueError(f"unprocessable section name: {section_name}")
-

prefs/linker.py

@@ -0,0 +1,56 @@
+import pathlib
+
+from . import host
+
+class Linker:
+    """
+    Linker links files from soome source to some target
+    """
+    def __init__(self, source_root, target_root):
+        self.source_root = source_root
+        self.target_root = target_root
+
+    def link(self, source_path, target_path):
+        if not source_path.is_absolute():
+            source_path = self.source_root / source_path
+        if not target_path.is_absolute():
+            target_path = self.target_root / target_path
+
+        if not target_path.parent.exists():
+            print("creating missing parent directories for target")
+            parent_dir = target_path.parent
+            parent_dir.mkdir(parents=True)
+
+        print(f"{source_path} -> {target_path}")
+
+class LinkFiles:
+    resource_name = 'link-files'
+
+    def __init__(self, label, section):
+        self.label = label
+        self.target_root = pathlib.Path(section['target_root']).expanduser()
+        self.source_root = host.dotfiles_root
+        self.parse_files(section.get('files', ''))
+
+    def parse_files(self, text):
+        self.files = []
+        lines = [s for s in text.splitlines() if s]
+        for line in lines:
+            parts = line.split(">", 2)
+            if len(parts) == 1:
+                pair = (parts[0].strip(), parts[0].strip())
+            else:
+                pair = (parts[0].strip(), parts[1].strip())
+            self.files.append(pair)
+
+    def __repr__(self):
+        if self.label:
+            return f'<LinkFiles: {self.label}>'
+        return '<LinkFiles>'
+
+    def run(self):
+        linker = Linker(host.dotfiles_root, self.target_root)
+        for pair in self.files:
+            source_path = pathlib.Path(pair[0])
+            target_path = pathlib.Path(pair[1])
+            linker.link(source_path, target_path)

prefs/resource.py

@@ -1,7 +1,8 @@
 from .home import Home
+from .linker import LinkFiles
 
 class Resource:
-    resource_types = [Home]
+    resource_types = [Home, LinkFiles]
 
     @classmethod
     def from_name(cls, name):
@@ -9,9 +10,17 @@ class Resource:
         from_name is to be implemented by resource classes
         """
         for T in cls.resource_types:
-            if r := T.from_name(name):
+            if T.resource_name == name:
-                return r
+                return T
-        return None
+        raise ValueError(f"No section type has name {name}")
 
-    def when(self, when_text):
+    @classmethod
-        pass
+    def from_section(cls, name, section):
+        parts = name.split(' ')
+        name = parts[0]
+        try:
+            label = parts[1]
+        except IndexError:
+            label = None
+        T = cls.from_name(name)
+        return T(label, section)