Add tools/latex-package-dependencies.lua.

1 files changed, 26 insertions, 0 deletions

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