passes/cmds/write_file.cc

   1 /*
   2  *  yosys -- Yosys Open SYnthesis Suite
   3  *
   4  *  Copyright (C) 2014  Clifford Wolf <clifford@clifford.at>
   5  *  Copyright (C) 2014  Johann Glaser <Johann.Glaser@gmx.at>
   6  *
   7  *  Permission to use, copy, modify, and/or distribute this software for any
   8  *  purpose with or without fee is hereby granted, provided that the above
   9  *  copyright notice and this permission notice appear in all copies.
  10  *
  11  *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  *
  19  */
  20
  21 #include "kernel/yosys.h"
  22
  23 USING_YOSYS_NAMESPACE
  24 PRIVATE_NAMESPACE_BEGIN
  25
  26 struct WriteFileFrontend : public Frontend {
  27         WriteFileFrontend() : Frontend("=write_file", "write a text to a file") { }
  28         virtual void help()
  29         {
  30                 //   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
  31                 log("\n");
  32                 log("    write_file [options] output_file [input_file]\n");
  33                 log("\n");
  34                 log("Write the text from the input file to the output file.\n");
  35                 log("\n");
  36                 log("    -a\n");
  37                 log("        Append to output file (instead of overwriting)\n");
  38                 log("\n");
  39                 log("\n");
  40                 log("Inside a script the input file can also can a here-document:\n");
  41                 log("\n");
  42                 log("    write_file hello.txt <<EOT\n");
  43                 log("    Hello World!\n");
  44                 log("    EOT\n");
  45                 log("\n");
  46         }
  47         virtual void execute(std::istream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design*)
  48         {
  49                 bool append_mode = false;
  50                 std::string output_filename;
  51
  52                 size_t argidx;
  53                 for (argidx = 1; argidx < args.size(); argidx++)
  54                 {
  55                         if (args[argidx] == "-a") {
  56                                 append_mode = true;
  57                                 continue;
  58                         }
  59                         break;
  60                 }
  61
  62                 if (argidx < args.size() && args[argidx].rfind("-", 0) != 0)
  63                         output_filename = args[argidx++];
  64                 else
  65                         log_cmd_error("Missing putput filename.\n");
  66
  67                 extra_args(f, filename, args, argidx);
  68
  69                 FILE *of = fopen(output_filename.c_str(), append_mode ? "a" : "w");
  70                 yosys_output_files.insert(output_filename);
  71                 char buffer[64 * 1024];
  72                 int bytes;
  73
  74                 while (0 < (bytes = readsome(*f, buffer, sizeof(buffer))))
  75                         fwrite(buffer, bytes, 1, of);
  76
  77                 fclose(of);
  78         }
  79 } WriteFileFrontend;
  80
  81 PRIVATE_NAMESPACE_END