1 files changed, 87 insertions, 0 deletions
diff --git a/a-b.lua b/a-b.lua
new file mode 100644
index 0000000..45f133f
--- /dev/null
+++ b/a-b.lua
@@ -0,0 +1,87 @@
+script_name = "A-B"
+script_description = "makes checking pre-timing possible."
+script_author = "garret"
+script_version = "3.0.0"
+script_namespace = "garret.a-b"
+
+local haveDepCtrl, DependencyControl, depctrl = pcall(require, "l0.DependencyControl")
+if haveDepCtrl then
+    depctrl = DependencyControl {
+        --feed="TODO",
+    }
+end
+
+local function switch_indicator(i)
+    if i == "a" then
+        return "b"
+    elseif i == "b" then
+        return "a"
+    end
+end
+
+local function strip_tags(text)
+    return text:gsub("{[^}]-}","")
+end
+
+local function get_indicator(letter, actor)
+    local indicator
+    if actor == "" then
+        indicator = letter
+    else
+    indicator = actor.." "..letter
+    end
+    return indicator
+end
+
+local function escape_pattern(txt)
+    local magic_chars = "%^%$%(%)%%.%[%]%*%+%-%?"
+    return txt:gsub("(["..magic_chars.."])", "%%%1")
+end
+
+local function main(sub, sel)
+    local i = "a"
+    for _,li in ipairs(sel) do
+        local line = sub[li]
+        local indicator = get_indicator(i, line.actor)
+
+        if line.text == "" then
+            line.text = indicator
+        elseif strip_tags(line.text) == "" then
+            line.text = line.text .. indicator -- apply tags
+        end
+
+        sub[li] = line
+        i = switch_indicator(i)
+    end
+    aegisub.set_undo_point(script_name)
+end
+
+local function undo(sub, sel)
+    local i = "a"
+    for _,li in ipairs(sel) do
+        local line = sub[li]
+        local indicator = get_indicator(i, line.actor)
+
+        if line.text == indicator then
+            line.text = ""
+        else
+            local escaped = escape_pattern(indicator)
+            line.text = line.text:gsub(escaped, "")
+        end
+        sub[li] = line
+        i = switch_indicator(i)
+    end
+end
+
+local macros = {
+    {"Add indicators", script_description, main},
+    {"Clean up","Gets rid of the indicators once you've adjusted the lines", undo}
+}
+if haveDepCtrl then
+    depctrl:registerMacros(macros)
+else
+    for _,macro in ipairs(macros) do
+        local name, desc, fun = unpack(macro)
+        aegisub.register_macro(script_name .. '/' .. name, desc, fun)
+    end
+end