Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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51 lines
1.5 KiB
51 lines
1.5 KiB
12 years ago
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--[[
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upb - a minimalist implementation of protocol buffers.
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Copyright (c) 2012 Google Inc. See LICENSE for details.
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Author: Josh Haberman <jhaberman@gmail.com>
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The upb compiler. Unlike the proto2 compiler, this does
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not output any parsing code or generated classes or anything
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specific to the protobuf binary format at all. At the moment
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it only dumps C initializers for upb_defs, so that a .proto
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file can be represented in a .o file.
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--]]
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local dump_cinit = require "dump_cinit"
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local upb = require "upb"
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local src = arg[1]
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local outbase = arg[2]
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local basename = arg[3]
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local hfilename = outbase .. ".upb.h"
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local cfilename = outbase .. ".upb.c"
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if os.getenv("UPBC_VERBOSE") then
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print("upbc:")
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print(string.format(" source file=%s", src))
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print(string.format(" output file base=%s", outbase))
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print(string.format(" hfilename=%s", hfilename))
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print(string.format(" cfilename=%s", cfilename))
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end
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-- Open input/output files.
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local f = assert(io.open(src, "r"), "couldn't open input file " .. src)
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local descriptor = f:read("*all")
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local symtab = upb.SymbolTable()
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symtab:load_descriptor(descriptor)
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os.execute(string.format("mkdir -p `dirname %s`", outbase))
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local hfile = assert(io.open(hfilename, "w"), "couldn't open " .. hfilename)
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local cfile = assert(io.open(cfilename, "w"), "couldn't open " .. cfilename)
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local happend = dump_cinit.file_appender(hfile)
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local cappend = dump_cinit.file_appender(cfile)
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-- Dump defs
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dump_cinit.dump_defs(symtab, basename, happend, cappend)
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hfile:close()
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cfile:close()
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