From 4de3a9c2cabfd0921751219a1ef9fea201943656 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Mon, 17 Oct 2022 21:55:25 -0700
Subject: Add tools/latex-package-dependencies.lua.

---
 tools/latex-package-dependencies.lua | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 tools/latex-package-dependencies.lua

(limited to 'tools/latex-package-dependencies.lua')

diff --git a/tools/latex-package-dependencies.lua b/tools/latex-package-dependencies.lua
new file mode 100644
index 000000000..aaa8689f8
--- /dev/null
+++ b/tools/latex-package-dependencies.lua
@@ -0,0 +1,26 @@
+-- Print latex packages needed by pandoc's default latex template.
+-- Usage: pandoc lua tools/latex-package-dependencies.lua
+
+local templ = pandoc.template.default("latex")
+
+local packages = {}
+
+templ:gsub("\\usepackage *%b[] *%{([^}]*)%}", function(capt)
+  capt:gsub("([^,]+)", function (pkg)
+    if not pkg:find("%$") then
+      packages[pkg] = true
+    end
+  end)
+end)
+
+templ:gsub("\\usepackage *%{([^}]*)%}", function(capt)
+  capt:gsub("([^,]+)", function (pkg)
+    if not pkg:find("%$") then
+      packages[pkg] = true
+    end
+  end)
+end)
+
+for pkg,_ in pairs(packages) do
+  print(pkg)
+end
-- 
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