| File: | src/usr.bin/midicat/midicat.c |
| Warning: | line 68, column 2 Value stored to 'argv' is never read |
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| 1 | /* |
| 2 | * Copyright (c) 2015 Alexandre Ratchov <alex@caoua.org> |
| 3 | * |
| 4 | * Permission to use, copy, modify, and distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | #include <err.h> |
| 17 | #include <fcntl.h> |
| 18 | #include <sndio.h> |
| 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <unistd.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | char usagestr[] = "usage: midicat [-d] [-i in-file] [-o out-file] " |
| 25 | "[-q in-port] [-q out-port]\n"; |
| 26 | |
| 27 | int |
| 28 | main(int argc, char **argv) |
| 29 | { |
| 30 | #define MIDI_BUFSZ1024 1024 |
| 31 | unsigned char buf[MIDI_BUFSZ1024]; |
| 32 | struct mio_hdl *ih, *oh; |
| 33 | char *port0, *port1, *ifile, *ofile; |
| 34 | int ifd, ofd; |
| 35 | int dump, c, i, len, n, sep, mode; |
| 36 | |
| 37 | dump = 0; |
| 38 | port0 = port1 = ifile = ofile = NULL((void *)0); |
| 39 | ih = oh = NULL((void *)0); |
| 40 | ifd = ofd = -1; |
| 41 | |
| 42 | while ((c = getopt(argc, argv, "di:o:q:")) != -1) { |
| 43 | switch (c) { |
| 44 | case 'd': |
| 45 | dump = 1; |
| 46 | break; |
| 47 | case 'q': |
| 48 | if (port0 == NULL((void *)0)) |
| 49 | port0 = optarg; |
| 50 | else if (port1 == NULL((void *)0)) |
| 51 | port1 = optarg; |
| 52 | else { |
| 53 | fputs("too many -q options\n", stderr(&__sF[2])); |
| 54 | return 1; |
| 55 | } |
| 56 | break; |
| 57 | case 'i': |
| 58 | ifile = optarg; |
| 59 | break; |
| 60 | case 'o': |
| 61 | ofile = optarg; |
| 62 | break; |
| 63 | default: |
| 64 | goto bad_usage; |
| 65 | } |
| 66 | } |
| 67 | argc -= optind; |
| 68 | argv += optind; |
Value stored to 'argv' is never read | |
| 69 | if (argc != 0) { |
| 70 | bad_usage: |
| 71 | fputs(usagestr, stderr(&__sF[2])); |
| 72 | return 1; |
| 73 | } |
| 74 | |
| 75 | /* we don't support more than one data flow */ |
| 76 | if (ifile != NULL((void *)0) && ofile != NULL((void *)0)) { |
| 77 | fputs("-i and -o are exclusive\n", stderr(&__sF[2])); |
| 78 | return 1; |
| 79 | } |
| 80 | |
| 81 | /* second port makes sense only for port-to-port transfers */ |
| 82 | if (port1 != NULL((void *)0) && !(ifile == NULL((void *)0) && ofile == NULL((void *)0))) { |
| 83 | fputs("too many -q options\n", stderr(&__sF[2])); |
| 84 | return 1; |
| 85 | } |
| 86 | |
| 87 | /* if there're neither files nor ports, then we've nothing to do */ |
| 88 | if (port0 == NULL((void *)0) && ifile == NULL((void *)0) && ofile == NULL((void *)0)) |
| 89 | goto bad_usage; |
| 90 | |
| 91 | /* if no port specified, use default one */ |
| 92 | if (port0 == NULL((void *)0)) |
| 93 | port0 = MIO_PORTANY"default"; |
| 94 | |
| 95 | /* open input or output file (if any) */ |
| 96 | if (ifile) { |
| 97 | if (strcmp(ifile, "-") == 0) |
| 98 | ifd = STDIN_FILENO0; |
| 99 | else { |
| 100 | ifd = open(ifile, O_RDONLY0x0000); |
| 101 | if (ifd == -1) { |
| 102 | perror(ifile); |
| 103 | return 1; |
| 104 | } |
| 105 | } |
| 106 | } else if (ofile) { |
| 107 | if (strcmp(ofile, "-") == 0) |
| 108 | ofd = STDOUT_FILENO1; |
| 109 | else { |
| 110 | ofd = open(ofile, O_WRONLY0x0001 | O_CREAT0x0200 | O_TRUNC0x0400, 0666); |
| 111 | if (ofd == -1) { |
| 112 | perror(ofile); |
| 113 | return 1; |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | /* open first port for input and output (if output needed) */ |
| 119 | if (ofile) |
| 120 | mode = MIO_IN8; |
| 121 | else if (ifile) |
| 122 | mode = MIO_OUT4; |
| 123 | else if (port1 == NULL((void *)0)) |
| 124 | mode = MIO_IN8 | MIO_OUT4; |
| 125 | else |
| 126 | mode = MIO_IN8; |
| 127 | ih = mio_open(port0, mode, 0); |
| 128 | if (ih == NULL((void *)0)) { |
| 129 | fprintf(stderr(&__sF[2]), "%s: couldn't open port\n", port0); |
| 130 | return 1; |
| 131 | } |
| 132 | |
| 133 | /* open second port, output only */ |
| 134 | if (port1 == NULL((void *)0)) |
| 135 | oh = ih; |
| 136 | else { |
| 137 | oh = mio_open(port1, MIO_OUT4, 0); |
| 138 | if (oh == NULL((void *)0)) { |
| 139 | fprintf(stderr(&__sF[2]), "%s: couldn't open port\n", port1); |
| 140 | exit(1); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | if (pledge("stdio", NULL((void *)0)) == -1) |
| 145 | err(1, "pledge"); |
| 146 | |
| 147 | /* transfer until end-of-file or error */ |
| 148 | for (;;) { |
| 149 | if (ifile != NULL((void *)0)) { |
| 150 | len = read(ifd, buf, sizeof(buf)); |
| 151 | if (len == 0) |
| 152 | break; |
| 153 | if (len == -1) { |
| 154 | perror("stdin"); |
| 155 | break; |
| 156 | } |
| 157 | } else { |
| 158 | len = mio_read(ih, buf, sizeof(buf)); |
| 159 | if (len == 0) { |
| 160 | fprintf(stderr(&__sF[2]), "%s: disconnected\n", port0); |
| 161 | break; |
| 162 | } |
| 163 | } |
| 164 | if (ofile != NULL((void *)0)) { |
| 165 | n = write(ofd, buf, len); |
| 166 | if (n != len) { |
| 167 | fprintf(stderr(&__sF[2]), "%s: short write\n", ofile); |
| 168 | break; |
| 169 | } |
| 170 | } else { |
| 171 | n = mio_write(oh, buf, len); |
| 172 | if (n != len) { |
| 173 | fprintf(stderr(&__sF[2]), "%s: disconnected\n", port1); |
| 174 | break; |
| 175 | } |
| 176 | } |
| 177 | if (dump) { |
| 178 | for (i = 0; i < len; i++) { |
| 179 | sep = (i % 16 == 15 || i == len - 1) ? |
| 180 | '\n' : ' '; |
| 181 | fprintf(stderr(&__sF[2]), "%02x%c", buf[i], sep); |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | /* clean-up */ |
| 187 | if (port0) |
| 188 | mio_close(ih); |
| 189 | if (port1) |
| 190 | mio_close(oh); |
| 191 | if (ifile) |
| 192 | close(ifd); |
| 193 | if (ofile) |
| 194 | close(ofd); |
| 195 | return 0; |
| 196 | } |