1 files changed, 56 insertions, 0 deletions
diff --git a/core/text.nom b/core/text.nom
new file mode 100644
index 0000000..8213988
--- /dev/null
+++ b/core/text.nom
@@ -0,0 +1,56 @@
+#..
+    This file contains some definitions of text escape sequences, including ANSI console
+    color codes.
+
+use "core/metaprogramming.nom"
+
+# Text functions
+action [%texts joined with %glue]:
+    lua> ".."
+        local text_bits = {}
+        for i,bit in ipairs(\%texts) do text_bits[i] = stringify(bit) end
+        return table.concat(text_bits, \%glue)
+parse [joined %texts, %texts joined] as: %texts joined with ""
+
+compile [capitalized %text, %text capitalized] to {..}
+    expr:"((\(%text as lua expr)):gsub('%l', string.upper, 1))"
+
+compile [%text with %sub instead of %patt, %text s/%patt/%sub] to {..}
+    expr:"((\(%text as lua expr)):gsub(\(%patt as lua expr), \(%sub as lua expr)))"
+
+# TODO: figure out whether indent/dedent should affect first line
+compile [indented %text, %text indented] to {expr:"((\%text):gsub('\\n','\\n'..('    ')))"}
+compile [dedented %obj, %obj dedented] to {expr:"nomsu:dedent(\(%obj as lua expr))"}
+compile [%text indented %n times] to {expr:"((\%text):gsub('\\n','\\n'..('    '):rep(\%n)))"}
+
+# Text literals
+lua> ".."
+    do
+        local escapes = {
+            nl="\\\\n", newline="\\\\n", tab="\\\\t", bell="\\\\a", cr="\\\\r", ["carriage return"]="\\\\r",
+            backspace="\\\\b", ["form feed"]="\\\\f", formfeed="\\\\f", ["vertical tab"]="\\\\v",
+        };
+        for name, e in pairs(escapes) do
+            local lua = "'"..e.."'";
+            nomsu:define_compile_action(name, \(!! code location !!), function() return {expr=lua}; end);
+        end
+        local colors = {
+            ["reset color"]="\\\\27[0m", bright="\\\\27[1m", dim="\\\\27[2m", underscore="\\\\27[4m",
+            blink="\\\\27[5m", inverse="\\\\27[7m", hidden="\\\\27[8m",
+
+            black="\\\\27[30m", red="\\\\27[31m", green="\\\\27[32m", yellow="\\\\27[33m", blue="\\\\27[34m",
+            magenta="\\\\27[35m", cyan="\\\\27[36m", white="\\\\27[37m",
+
+            ["on black"]="\\\\27[40m", ["on red"]="\\\\27[41m", ["on green"]="\\\\27[42m", ["on yellow"]="\\\\27[43m",
+            ["on blue"]="\\\\27[44m", ["on magenta"]="\\\\27[45m", ["on cyan"]="\\\\27[46m", ["on white"]="\\\\27[47m",
+        };
+        for name, c in pairs(colors) do
+            local color = "'"..c.."'";
+            local reset = "'"..colors["reset color"].."'";
+            nomsu:define_compile_action(name, \(!! code location !!), function() return {expr=color}; end);
+            nomsu:define_compile_action(name.." %", \(!! code location !!), function(\%)
+                return {expr=color..".."..nomsu:tree_to_lua(\%).expr..".."..reset};
+            end);
+        end
+    end
+