#line 1 "usage.rl" #include #include #define BUFLEN 1024 #define BUFSIZE 2048 typedef struct { /* commands */ int delta; int fromrdiff; int patch; /* flags */ int help; /* options */ /* arguments */ char* output_file; char* rdiff_file; char* source_file; char* target_file; char* umdiff_file; } options_t; struct params { options_t* opt; char buffer[BUFLEN + 1]; int buflen; int cs; }; #line 70 "usage.rl" #line 40 "usage.rl.h" static const char _params_actions[] = { 0, 1, 0, 1, 3, 1, 4, 1, 5, 1, 6, 2, 1, 7, 2, 1, 8, 2, 1, 9, 2, 1, 10, 2, 1, 11, 2, 2, 0 }; static const char _params_key_offsets[] = { 0, 0, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42 }; static const char _params_trans_keys[] = { 45, 100, 102, 112, 45, 104, 104, 101, 108, 112, 0, 101, 108, 116, 97, 0, 0, 0, 0, 0, 0, 0, 114, 111, 109, 114, 100, 105, 102, 102, 0, 0, 0, 97, 116, 99, 104, 0, 0, 0, 0, 0, 0 }; static const char _params_single_lengths[] = { 0, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 }; static const char _params_range_lengths[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; static const char _params_index_offsets[] = { 0, 0, 5, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80 }; static const char _params_trans_targs[] = { 2, 8, 19, 30, 0, 3, 7, 0, 4, 0, 5, 0, 6, 0, 7, 0, 39, 0, 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 0, 14, 15, 14, 0, 16, 17, 16, 0, 18, 39, 18, 20, 0, 21, 0, 22, 0, 23, 0, 24, 0, 25, 0, 26, 0, 27, 0, 28, 0, 0, 29, 17, 29, 31, 0, 32, 0, 33, 0, 34, 0, 35, 0, 0, 36, 37, 36, 0, 38, 17, 38, 0, 0 }; static const char _params_trans_actions[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 26, 17, 1, 0, 26, 20, 1, 0, 26, 11, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 26, 14, 1, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 26, 17, 1, 0, 26, 23, 1, 0, 0 }; static const int params_start = 1; static const int params_first_final = 39; static const int params_error = 0; static const int params_en_main = 1; #line 73 "usage.rl" static void params_init(struct params *fsm, options_t* opt) { memset(opt, 0, sizeof(options_t)); fsm->opt = opt; fsm->buflen = 0; #line 131 "usage.rl.h" { fsm->cs = params_start; } #line 83 "usage.rl" } static void params_execute(struct params *fsm, const char *data, int len) { const char *p = data; const char *pe = data + len; #line 141 "usage.rl.h" { int _klen; unsigned int _trans; const char *_acts; unsigned int _nacts; const char *_keys; if ( p == pe ) goto _test_eof; if ( fsm->cs == 0 ) goto _out; _resume: _keys = _params_trans_keys + _params_key_offsets[ fsm->cs]; _trans = _params_index_offsets[ fsm->cs]; _klen = _params_single_lengths[ fsm->cs]; if ( _klen > 0 ) { const char *_lower = _keys; const char *_mid; const char *_upper = _keys + _klen - 1; while (1) { if ( _upper < _lower ) break; _mid = _lower + ((_upper-_lower) >> 1); if ( (*p) < *_mid ) _upper = _mid - 1; else if ( (*p) > *_mid ) _lower = _mid + 1; else { _trans += (unsigned int)(_mid - _keys); goto _match; } } _keys += _klen; _trans += _klen; } _klen = _params_range_lengths[ fsm->cs]; if ( _klen > 0 ) { const char *_lower = _keys; const char *_mid; const char *_upper = _keys + (_klen<<1) - 2; while (1) { if ( _upper < _lower ) break; _mid = _lower + (((_upper-_lower) >> 1) & ~1); if ( (*p) < _mid[0] ) _upper = _mid - 2; else if ( (*p) > _mid[1] ) _lower = _mid + 2; else { _trans += (unsigned int)((_mid - _keys)>>1); goto _match; } } _trans += _klen; } _match: fsm->cs = _params_trans_targs[_trans]; if ( _params_trans_actions[_trans] == 0 ) goto _again; _acts = _params_actions + _params_trans_actions[_trans]; _nacts = (unsigned int) *_acts++; while ( _nacts-- > 0 ) { switch ( *_acts++ ) { case 0: #line 41 "usage.rl" { if (fsm->buflen < BUFLEN) fsm->buffer[fsm->buflen++] = (*p); } break; case 1: #line 46 "usage.rl" { if (fsm->buflen < BUFLEN) fsm->buffer[fsm->buflen++] = 0; } break; case 2: #line 51 "usage.rl" { fsm->buflen = 0; } break; case 3: #line 53 "usage.rl" { fsm->opt->delta = 1; } break; case 4: #line 54 "usage.rl" { fsm->opt->fromrdiff = 1; } break; case 5: #line 55 "usage.rl" { fsm->opt->patch = 1; } break; case 6: #line 56 "usage.rl" { fsm->opt->help = 1; } break; case 7: #line 58 "usage.rl" { fsm->opt->output_file = strdup(fsm->buffer); } break; case 8: #line 59 "usage.rl" { fsm->opt->rdiff_file = strdup(fsm->buffer); } break; case 9: #line 60 "usage.rl" { fsm->opt->source_file = strdup(fsm->buffer); } break; case 10: #line 61 "usage.rl" { fsm->opt->target_file = strdup(fsm->buffer); } break; case 11: #line 62 "usage.rl" { fsm->opt->umdiff_file = strdup(fsm->buffer); } break; #line 255 "usage.rl.h" } } _again: if ( fsm->cs == 0 ) goto _out; if ( ++p != pe ) goto _resume; _test_eof: {} _out: {} } #line 91 "usage.rl" } static int params_finish(struct params *fsm) { if (fsm->cs == params_error) return -1; if (fsm->cs >= params_first_final) return 1; return 0; } static void show_usage() { fprintf(stdout, "umdiff - Generate patch files for use with umd-livepatch\n"); fprintf(stdout, "\n"); fprintf(stdout, "Usage:\n"); fprintf(stdout, " umdiff delta \n"); fprintf(stdout, " umdiff patch \n"); fprintf(stdout, " umdiff from-rdiff \n"); fprintf(stdout, " umdiff --help\n"); fprintf(stdout, "\n"); fprintf(stdout, "Options:\n"); fprintf(stdout, " -h --help Prints a short usage summary.\n"); fprintf(stdout, "\n"); } static int parse_options(int argc, char **argv, options_t* options) { int a; struct params params; params_init(¶ms, options); for (a = 1; a < argc; a++ ) params_execute(¶ms, argv[a], strlen(argv[a]) + 1); if (params_finish(¶ms) != 1) { fprintf(stderr, "Error processing arguments\n"); show_usage(); return -1; } return 0; }