99 lines
2.4 KiB
Lua
Vendored
99 lines
2.4 KiB
Lua
Vendored
--
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-- Embed the Lua scripts into src/host/scripts.c as static data buffers.
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-- I embed the actual scripts, rather than Lua bytecodes, because the
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-- bytecodes are not portable to different architectures, which causes
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-- issues in Mac OS X Universal builds.
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--
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local scriptdir = path.getdirectory(_SCRIPT)
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local function stripfile(fname)
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local f = io.open(fname)
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local s = assert(f:read("*a"))
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f:close()
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-- strip tabs
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s = s:gsub("[\t]", "")
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-- strip any CRs
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s = s:gsub("[\r]", "")
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-- strip out comments
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s = s:gsub("\n%-%-[^\n]*", "")
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-- escape backslashes
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s = s:gsub("\\", "\\\\")
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-- strip duplicate line feeds
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s = s:gsub("\n+", "\n")
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-- strip out leading comments
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s = s:gsub("^%-%-\n", "")
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-- escape line feeds
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s = s:gsub("\n", "\\n")
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-- escape double quote marks
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s = s:gsub("\"", "\\\"")
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return s
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end
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local function writeline(out, s, continues)
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out:write("\t\"")
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out:write(s)
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out:write(iif(continues, "\"\n", "\",\n"))
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end
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local function writefile(out, fname, contents)
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local max = 1024
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out:write("\t/* " .. fname .. " */\n")
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-- break up large strings to fit in Visual Studio's string length limit
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local start = 1
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local len = contents:len()
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while start <= len do
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local n = len - start
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if n > max then n = max end
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local finish = start + n
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-- make sure I don't cut an escape sequence
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while contents:sub(finish, finish) == "\\" do
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finish = finish - 1
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end
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writeline(out, contents:sub(start, finish), finish < len)
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start = finish + 1
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end
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out:write("\n")
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end
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function doembed()
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-- load the manifest of script files
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scripts = dofile(path.join(scriptdir, "../src/_manifest.lua"))
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-- main script always goes at the end
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table.insert(scripts, "_premake_main.lua")
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-- open scripts.c and write the file header
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local out = io.open(path.join(scriptdir, "../src/host/scripts.c"), "w+b")
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out:write("/* Premake's Lua scripts, as static data buffers for release mode builds */\n")
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out:write("/* DO NOT EDIT - this file is autogenerated - see BUILD.txt */\n")
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out:write("/* To regenerate this file, run: premake4 embed */ \n\n")
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out:write("const char* builtin_scripts[] = {\n")
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for i,fn in ipairs(scripts) do
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print(fn)
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local s = stripfile(path.join(scriptdir,"../src/" .. fn))
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writefile(out, fn, s)
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end
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out:write("\t0\n};\n");
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out:close()
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end
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