/* ************************************************************************** */ /* _____ _ */ /* args.c |_ _|__ _ _| |__ ___ _ _ */ /* | Project : p7 | |/ _ \| | | | '_ \ / _ \ | | | */ /* | | (_) | |_| | | | | __/ |_| | */ /* By: thomas |_|\___/ \__,_|_| |_|\___|\__, |.fr */ /* Last updated: 2016/08/21 19:10:17 |___/ */ /* */ /* ************************************************************************** */ #include "main.h" #include #include #include #include #include /* ************************************************************************** */ /* Help and version messages */ /* ************************************************************************** */ /* Version message */ static const char version_message[] = "P7 v" QUOTE(VERSION) " (licensed under " QUOTE(LICENSE) ")\n" "Made by " QUOTE(AUTHOR) " <" QUOTE(AUTHOR_MAIL) ">.\n" "\n" "This is free software; see the source for copying conditions.\n" "There is NO warranty; not even for MERCHANTABILITY or\n" "FITNESS FOR A PARTICULAR PURPOSE."; /* Main help message */ static const char help_main[] = "Usage: p7 [--version|-v] [--help|-h] [--no-init] [--no-exit]\n" " [--storage abc0] [--device /dev/omg0]\n" " [options...]\n" "\n" "Subcommands you can use are:\n" " send Send a file to the calculator.\n" " get Get a file from the calculator.\n" " copy Copy a file into another on the calculator.\n" " del Delete a file on the calculator.\n" " reset Reset the flash memory.\n" " optimize Optimize the distant filesystem.\n" " ls List files on the distant filesystem.\n" " info Dump info about the calculator.\n" "\n" "General options:\n" " -h, --help Display the help page of the (sub)command and quit.\n" " -v, --version Display the version message and quit.\n" " --device dev The calculator device (ttyUSBx).\n" " By default, will use the first appropriate device found.\n" " --storage abc0 The storage device with which to interact (fls0, crd0).\n" " Default storage device is '" QUOTE(DEFAULT_STORAGE) "'.\n" " --no-exit Does not terminate connection when action is completed.\n" " --no-init Does not initialize connection (should only be used\n" " when --no-exit was used last time p7 was called).\n" "\n" "Type \"p7 --help\" for some help about the subcommand.\n" "Report bugs to " QUOTE(AUTHOR) " <" QUOTE(AUTHOR_MAIL) ">."; /* Sending help message */ static const char help_send[] = "Usage: p7 send [-f] [-o ]\n" " [-d ] [-#] \n" "Send a file to the calculator.\n" "\n" "Options are:\n" " -f, --force Overwrite without asking\n" " -o The output filename on the calculator (by default, the same\n" " as the local file)\n" " -d The directory on-calc in which the file will be stored (by\n" " default, the root directory)\n" " -# Display a nice little loading bar\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Getting help message */ static const char help_get[] = "Usage: p7 get [-o ]\n" " [-d ] \n" "Request a file from the calculator.\n" "\n" "Options are:\n" " -o The output filename (by default, the same as the on-calc file)\n" " -d The directory on-calc in which to get the file (by default,\n" " the root directory)\n" " -# Display a nice little loading bar (if output isn't stdout)\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Copying help message */ static const char help_copy[] = "Usage: p7 copy [-f] [-d ] \n" "Copies a file into the other on the calculator.\n" "\n" "Options are:\n" " -d The source directory (by default, the root directory)\n" " -t The dest. directory (by default, the root directory)\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Deleting help message */ static const char help_del[] = "Usage: p7 del [-d \n" "Delete a file on the calculator.\n" "\n" "Options are:\n" " -d The directory on-calc in which to remove the file (by default,\n" " the root directory)\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Listing help message */ static const char help_ls[] = "Usage: p7 ls\n" "List files on the distant filesystem.\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Resetting help message */ static const char help_reset[] = "Usage: p7 reset\n" "Reset the distant filesystem.\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Optimizing help message */ static const char help_optimize[] = "Usage: p7 optimize\n" "Optimize the distant filesystem.\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* Dumping help message */ static const char help_info[] = "Usage: p7 info\n" "Dump information about the calculator.\n" "\n" "Type \"p7 --help\" for other subcommands and general options."; /* ************************************************************************** */ /* Main function */ /* ************************************************************************** */ /* useful macros */ #define sub_init(CMD, NARGS) \ args->menu = mn_##CMD; \ if (help || aac != 1 + (NARGS)) { \ puts(help_##CMD); \ return (0); \ } /** * parse_args: * Args parsing main function. * * Was my very first experiment with getopt. * Then I took an arrow in the knee. * * @arg ac the arguments count * @arg av the arguments values * @arg args the parsed args pointer * @return if it was successfully parsed */ int parse_args(int ac, char **av, args_t *args) { /* initialize args */ *args = (args_t){ .menu = 0, .nicedisp = 0, .dirname = NULL, .filename = NULL, .newdir = NULL, .newname = NULL, .local = NULL, .force = 0, .device = NULL, .storage = QUOTE(DEFAULT_STORAGE), .noinit = 0, .noexit = 0}; /* define options */ char short_options[] = "hvfo:d:t:#"; struct option long_options[] = { {"help", no_argument, NULL, 'h'}, {"version", no_argument, NULL, 'v'}, {"device", required_argument, NULL, 'p'}, {"storage", required_argument, NULL, 's'}, {"force", no_argument, NULL, 'f'}, {"output", required_argument, NULL, 'o'}, {"directory", required_argument, NULL, 'd'}, {"to", required_argument, NULL, 't'}, {"no-init", no_argument, NULL, 'i'}, {"no-start", no_argument, NULL, 'i'}, {"no-exit", no_argument, NULL, 'e'}, {"no-term", no_argument, NULL, 'e'}, {NULL, 0, NULL, 0} }; /* get all options */ int c; opterr = 0; int help = 0; const char *s_out = NULL, *s_dir = NULL, *s_todir = NULL; while ((c = getopt_long(ac, av, short_options, long_options, NULL)) != -1) { switch (c) { /* help */ case 'h': help = 1; break; /* version */ case 'v': puts(version_message); return (0); break; /* force */ case 'f': args->force = 1; break; /* nice display */ case '#': args->nicedisp = 1; break; /* output file (on calc or local) */ case 'o': s_out = optarg; break; /* directory name */ case 'd': s_dir = optarg; break; /* destination directory name */ case 't': s_todir = optarg; break; /* device */ case 'p': args->device = optarg; break; /* storage */ case 's': args->storage = optarg; break; /* force no initialization */ case 'i': args->noinit = 1; break; /* force no exit */ case 'e': args->noexit = 1; break; /* in case of error */ case '?': if (optopt == 'o') log("-o, --output: expected an argument\n"); else if (optopt == 'd') log("-d, --directory: expected an argument\n"); else if (optopt == 't') log("-t, --to: expected an argument\n"); else if (optopt == 'p') log("--device: expected an argument\n"); else if (optopt == 's') log("--storage: expected an argument\n"); else break; return (0); break; } } /* get non-option arguments (subcommand and parameters) */ int aac = ac - optind; char **aav = &av[optind]; /* get subcommand and things to check */ char fpmode[2] = " "; args->localpath = NULL; /* - all subcommands - */ if (!aac || !strcmp(aav[0], "help")) { puts(help_main); return (0); } else if (!strcmp(aav[0], "info")) { sub_init(info, 0) } else if (!strcmp(aav[0], "ls")) { sub_init(ls, 0) } else if (!strcmp(aav[0], "reset")) { sub_init(reset, 0) } else if (!strcmp(aav[0], "optimize")) { sub_init(optimize, 0) } else if (!strcmp(aav[0], "send")) { sub_init(send, 1) /* put arguments to check */ fpmode[0] = 'r'; args->localpath = aav[1]; args->dirname = s_dir ? s_dir : NULL; if (s_out) args->filename = s_out; else { char *rs = strrchr(args->localpath, '/'); args->filename = rs ? rs + 1 : args->localpath; } } else if (!strcmp(aav[0], "get")) { sub_init(get, 1) /* put arguments to check */ fpmode[0] = 'w'; args->filename = aav[1]; args->dirname = s_dir ? s_dir : NULL; args->localpath = s_out ? s_out : args->filename; } else if (!strcmp(aav[0], "copy")) { sub_init(copy, 2) /* get filename */ args->filename = aav[1]; args->dirname = s_dir ? s_dir : NULL; args->newname = aav[2]; args->newdir = s_todir ? s_todir : NULL; } else if (!strcmp(aav[0], "del")) { sub_init(del, 1) /* get filename */ args->filename = aav[1]; args->dirname = s_dir ? s_dir : NULL; } else { /* unknown subcommand ! */ log("Unknown subcommand '%s'.\n", aav[0]); return (0); } /* check string lengths */ int noerror = 0; if (args->filename && strnlen(args->filename, 13) == 13) log("On-calc filename must have 12 chars or less!\n"); else if (args->newname && strnlen(args->newname, 13) == 13) log("Destination filename must have 12 chars or less!\n"); else if (args->dirname && strnlen(args->dirname, 9) == 9) log("On-calc directory name must have 8 chars or less!\n"); else if (args->newdir && strnlen(args->newdir, 9) == 9) log("Destination directory name must have 8 chars or less!\n"); else if (strnlen(args->storage, 5) != 4) log("Storage device (%s) should be 4 chars long!\n", args->storage); else noerror = 1; if (!noerror) return (0); /* check local path */ if (args->localpath) { if (fpmode[0] == 'w' && !strcmp(args->localpath, "-")) args->local = stdout; else if (!(args->local = fopen(args->localpath, fpmode))) { log("Could not open local file : %s\n", strerror(errno)); if (fpmode[0] == 'w') unlink(args->localpath); return (0); } } /* everything went well */ return (1); }