| 1 | #!/usr/bin/env python2
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| 2 | """Signal_gen.py."""
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| 3 | from __future__ import print_function
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| 4 |
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| 5 | import sys
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| 6 |
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| 7 | import signal_def
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| 8 |
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| 9 |
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| 10 | def CppPrintSignals(f):
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| 11 | f.write("""
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| 12 | void PrintSignals() {
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| 13 | """)
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| 14 |
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| 15 | for abbrev, _ in signal_def._BY_NUMBER:
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| 16 | name = "SIG%s" % (abbrev, )
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| 17 | f.write("""\
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| 18 | #ifdef %s
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| 19 | printf("%%2d %s\\n", %s);
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| 20 | #endif
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| 21 | """ % (name, name, name))
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| 22 |
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| 23 | f.write("}\n")
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| 24 |
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| 25 |
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| 26 | def CppGetNumber(f):
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| 27 | f.write("""\
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| 28 | int GetNumber(BigStr* sig_spec) {
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| 29 | int length = len(sig_spec);
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| 30 | if (length == 0) {
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| 31 | return NO_SIGNAL;
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| 32 | }
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| 33 |
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| 34 | const char* data = sig_spec->data_;
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| 35 |
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| 36 | """)
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| 37 | for abbrev, _ in signal_def._BY_NUMBER:
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| 38 | name = "SIG%s" % (abbrev, )
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| 39 | f.write("""\
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| 40 | if ((length == %d && memcmp("%s", data, %d) == 0) ||
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| 41 | (length == %d && memcmp("%s", data, %d) == 0)) {
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| 42 | return %s;
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| 43 | }
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| 44 | """ % (len(name), name, len(name), len(abbrev), abbrev, len(abbrev), name))
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| 45 | f.write("""\
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| 46 | return NO_SIGNAL;
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| 47 | }
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| 48 | """)
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| 49 |
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| 50 |
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| 51 | def main(argv):
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| 52 | try:
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| 53 | action = argv[1]
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| 54 | except IndexError:
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| 55 | raise RuntimeError('Action required')
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| 56 |
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| 57 | if action == 'cpp':
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| 58 | out_prefix = argv[2]
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| 59 |
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| 60 | with open(out_prefix + '.h', 'w') as f:
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| 61 | f.write("""\
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| 62 | #ifndef FRONTEND_SIGNAL_H
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| 63 | #define FRONTEND_SIGNAL_H
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| 64 |
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| 65 | #include "mycpp/runtime.h"
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| 66 |
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| 67 | namespace signal_def {
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| 68 |
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| 69 | const int NO_SIGNAL = -1;
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| 70 |
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| 71 | void PrintSignals();
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| 72 |
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| 73 | int GetNumber(BigStr* sig_spec);
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| 74 |
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| 75 | } // namespace signal_def
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| 76 |
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| 77 | #endif // FRONTEND_SIGNAL_H
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| 78 | """)
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| 79 |
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| 80 | with open(out_prefix + '.cc', 'w') as f:
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| 81 | f.write("""\
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| 82 | #include "signal.h"
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| 83 |
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| 84 | #include <signal.h> // SIG*
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| 85 | #include <stdio.h> // printf
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| 86 |
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| 87 | namespace signal_def {
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| 88 |
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| 89 | """)
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| 90 | CppPrintSignals(f)
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| 91 | f.write("\n")
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| 92 | CppGetNumber(f)
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| 93 |
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| 94 | f.write("""\
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| 95 |
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| 96 | } // namespace signal_def
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| 97 | """)
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| 98 |
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| 99 |
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| 100 | if __name__ == '__main__':
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| 101 | try:
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| 102 | main(sys.argv)
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| 103 | except RuntimeError as e:
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| 104 | print('FATAL: %s' % e, file=sys.stderr)
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| 105 | sys.exit(1)
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