Initial commit

autoload/denote/meta.vim

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+" Return the filename of the note with id `noteId`. If the file is note found,
+" then v:false is returned.
+function denote#meta#fileFromNoteId(noteId)
+	" According to the file-naming scheme, the note id is prefixed with '@@'. If
+	" the note id appears at the beginning of the filename, then this prefix is
+	" optional. There may exist another field (such as the signature, title, or
+	" keywords field) after the note id. These are prefixed with '==', '--', or
+	" '__'. If the note id is the last field, then the id is followed by the file
+	" extension, e.g., '.md'.
+	" (A) First, we get all files that contain the note id as substring.
+	" (B) Then we ensure that the note id is followed by another field or by the
+	"     file extension.
+	let files = glob("*" .. a:noteId .. "*", 0, v:true)
+				\ ->filter('v:val =~ "' .. a:noteId .. '\\(==\\|--\\|__\\|\\.\\)"')
+				\ ->filter('v:val =~ "^' .. a:noteId .. '\\|@@' .. a:noteId .. '"')
+	return empty(files) ? v:false : files[0]
+endfunction
+
+" Return the note id from the filename. On failure, v:false is returned.
+function denote#meta#noteIdFromFile(filename)
+	return a:filename->matchstr("@@\\zs.\\{-\\}\\ze\\(==\\|--\\|__\\|\\..\\)")
+				\ ?? a:filename->matchstr("^.\\{-\\}\\ze\\(==\\|--\\|__\\|\\..\\)")
+				\ ?? v:false
+endfunction
+
+" Return the note title from the filename. On failure, v:false is returned.
+function denote#meta#noteTitleFromFile(filename)
+	return a:filename->matchstr("--\\zs.\\{-\\}\\ze\\(==\\|@@\\|__\\|\\..\\)")->substitute("-", " ", "g")
+				\ ?? v:false
+endfunction
+
+" Return the note tags from the filename as a list.
+function denote#meta#noteTagsFromFile(filename)
+	return a:filename->matchstr("__\\zs.\\{-\\}\\ze\\(==\\|@@\\|--\\|\\..\\)")->split("_")
+				\ ?? []
+endfunction