embeddings updated

generate_embeddings.lua

@@ -2,83 +2,21 @@
 
 package.path = (arg[0]:match("@?(.*/)") or arg[0]:match("@?(.*\\)")) .. "lib" .. package.config:sub(1, 1) .. "?.lua;" .. package.path
 local utility = require "utility"
-local json = utility.require("dkjson")
 
-local PATH = "PRIVATE_DATA/notebook"
-local whitelist = { md = true, }
+local text_processing = utility.require("text_processing")
+local timing = utility.require("timing")
+local json = utility.require("dkjson")
 
 -- local embedding_model = "nomic-embed-text"
 -- local maximum_file_size = 2048
 local embedding_model = "qwen3-embedding:0.6b"
 local maximum_file_size = 32768
 
+local NOTEBOOK_PATH = "PRIVATE_DATA/notebook"
+local blacklist = utility.enumerate{ ".git", } -- accelerate processing by ignoring .git directory
+local extension_whitelist = utility.enumerate{ "md", }
 
 
-local timing = {}
-local function display_timing(n)
-  local function _display(n)
-    local time = timing[n]
-    local previous = timing[n - 1]
-
-    local delta = time.time - previous.time
-    if delta >= 2*60*60 then -- 2 hours
-      delta = tostring(math.floor(delta/(60*60/10))/10) .. " hours"
-    elseif delta >= 120 then -- 2 minutes
-      delta = tostring(math.floor(delta/(60/10))/10) .. " minutes"
-    else
-      delta = tostring(delta) .. " seconds"
-    end
-
-    print(delta, previous.label)
-  end
-
-  if n then
-    _display(n)
-  else
-    print("All measured timings:")
-    for i = 2, #timing do
-      _display(i)
-    end
-  end
-end
-
-local function mark_timing(label)
-  timing[#timing + 1] = { label = label, time = os.time(), }
-  if #timing > 1 then
-    display_timing(#timing)
-  end
-end
-
--- strip YAML frontmatter (if present)
---   can error, will return nil & error message
-local function strip_frontmatter(text)
-  local tab = text:split("\n")
-  if tab[1] == "---" then
-    table.remove(tab, 1)
-    while true do
-      local done = tab[1] == "---"
-      table.remove(tab, 1)
-      if done then
-        return table.concat(tab, "\n")
-      elseif #tab < 1 then
-        return nil, "Invalid YAML frontmatter."
-      end
-    end
-  end
-  return text
-end
-
-local tree
-tree = function(path, fn)
-  utility.list(path or ".", function(path_name)
-    if path_name == ".git" then return end
-    if utility.is_file(path_name) then
-      fn(path_name)
-    else
-      tree(path .. utility.path_separator .. path_name, fn)
-    end
-  end)
-end
 
 local function leftpad(text, length)
   return string.rep("0", length - #(tostring(text))) .. text
@@ -89,36 +27,22 @@ end
 local file_list = {}
 local embeddings = {}
 
-mark_timing("Assembling file list.")
-tree(PATH, function(file_name)
-  local path, name, extension = utility.split_path_components(file_name)
-  if not extension then
-    return
-  end
-
-  if not whitelist[extension] then
-    return
-  end
-
+timing.mark("Assembling file list.")
+utility.tree(NOTEBOOK_PATH, {
+  blacklist = blacklist,
+  extension_whitelist = extension_whitelist,
+}, function(file_name)
   file_list[#file_list + 1] = file_name
 end)
 
-mark_timing("Generating embeddings.")
+timing.mark("Generating embeddings.")
 for i = 1, #file_list do
   local function _run()
     local file_name = file_list[i]
 
     -- stripping YAML frontmatter before generating embeddings
-    local file_contents = utility.open(file_name, "r", function(file)
-      return file:read("*all")
-    end)
-
-    local tmp_file_contents, error_message = strip_frontmatter(file_contents)
-    if tmp_file_contents == nil then
-      print("ERROR: " .. file_name .. " " .. error_message)
-      tmp_file_contents = file_contents
-    end
-
+    local file_contents = utility.read_file(file_name)
+    local tmp_file_contents = text_processing.strip_frontmatter(file_contents)
     if #tmp_file_contents == 0 then
       print(file_name .. "\n is empty and will be skipped.")
       return
@@ -129,14 +53,7 @@ for i = 1, #file_list do
       tmp_file_contents = tmp_file_contents:sub(1, maximum_file_size)
     end
 
-    local tmp_file_name = utility.tmp_file_name()
-    utility.open(tmp_file_name, "w", function(file)
-      file:write(tmp_file_contents)
-    end)
-
-    local output = utility.capture_safe("cat " .. tmp_file_name:enquote() .. " | ollama run " .. embedding_model)
-    os.execute("rm " .. tmp_file_name)
-    output = output:sub(1, -2) -- strip extra newline from utility.capture_safe
+    local output = utility.llm_prompt(tmp_file_contents, embedding_model)
 
     if #output == 0 then
       print("Warning: " .. file_name .. " did not have embeddings generated.")
@@ -157,13 +74,9 @@ for i = 1, #file_list do
   _run()
 end
 
-mark_timing("Outputting embeddings in JSON.")
-utility.open("PRIVATE_DATA/embeddings.json", "w", function(file)
-  local output = json.encode(embeddings, { indent = true })
-  file:write(output)
-  file:write("\n")
-end)
+timing.mark("Outputting embeddings in JSON.")
+utility.save_data(embeddings, "PRIVATE_DATA/embeddings.json")
 
-mark_timing("Finished.")
+timing.mark("Finished.")
 print("")
-display_timing()
+timing.display()

lib/timing.lua

@@ -0,0 +1,37 @@
+local timing = {}
+
+timing.display = function(n)
+  local function _display(n)
+    local time = timing[n]
+    local previous = timing[n - 1]
+
+    local delta = time.time - previous.time
+    if delta >= 2*60*60 then -- if more than 2 hours
+      delta = tostring(math.floor(delta/(60*60/10))/10) .. " hours"
+    elseif delta >= 120 then -- if more then 2 minutes
+      delta = tostring(math.floor(delta/(60/10))/10) .. " minutes"
+    else
+      delta = tostring(delta) .. " seconds"
+    end
+
+    print(delta, previous.label)
+  end
+
+  if n then
+    _display(n)
+  else
+    print("All measured timings:")
+    for i = 2, #timing do
+      _display(i)
+    end
+  end
+end
+
+timing.mark = function(label)
+  timing[#timing + 1] = { label = label, time = os.time(), }
+  if #timing > 1 then
+    timing.display(#timing)
+  end
+end
+
+return timing