diff options
Diffstat (limited to 'bin')
| -rw-r--r-- | bin/.gitignore | 1 | ||||
| -rw-r--r-- | bin/Makefile | 1 | ||||
| -rw-r--r-- | bin/man1/setopt.1 | 48 | ||||
| -rw-r--r-- | bin/setopt.c | 55 |
4 files changed, 105 insertions, 0 deletions
diff --git a/bin/.gitignore b/bin/.gitignore index 7a4e360f..4e25a4fd 100644 --- a/bin/.gitignore +++ b/bin/.gitignore @@ -23,6 +23,7 @@ psfed scheme scheme.h scheme.png +setopt tags ttpre up diff --git a/bin/Makefile b/bin/Makefile index f0128b16..16a5ba9e 100644 --- a/bin/Makefile +++ b/bin/Makefile @@ -18,6 +18,7 @@ BINS += pbd BINS += pngo BINS += psf2png BINS += scheme +BINS += setopt BINS += ttpre BINS += up BINS += wake diff --git a/bin/man1/setopt.1 b/bin/man1/setopt.1 new file mode 100644 index 00000000..a148b28f --- /dev/null +++ b/bin/man1/setopt.1 @@ -0,0 +1,48 @@ +.Dd February 24, 2019 +.Dt SETOPT 1 +.Os +. +.Sh NAME +.Nm setopt +.Nd parse command options +. +.Sh SYNOPSIS +.Nm +.Ar optstring +.Op Ar args ... +. +.Sh DESCRIPTION +.Nm +behaves similarly to +.Xr getopt 1 , +except that it produces quoted output +appropriate for use with the +.Nm eval +shell builtin. +This allows arguments containing whitespace +to survive parsing. +. +.Sh EXAMPLES +.Bd -literal -offset indent +args=$(setopt abo: "$@") +eval set -- "$args" +.Ed +. +.Sh SEE ALSO +.Xr getopt 1 , +.Xr sh 1 , +.Xr getopt 3 +. +.Sh HISTORY +The +.Xr getopt 1 +manual page of +.Fx +reads, +.Do +Arguments containing white space +or embedded shell metacharacters +generally will not survive intact; +this looks easy to fix but isn't. +.Dc +Yet here we are. diff --git a/bin/setopt.c b/bin/setopt.c new file mode 100644 index 00000000..75197f51 --- /dev/null +++ b/bin/setopt.c @@ -0,0 +1,55 @@ +/* Copyright (C) 2019 C. McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> + +static void printArg(const char *str) { + printf(" "); + if (!str[0]) { + printf("''"); + return; + } + while (str[0]) { + size_t sq = strcspn(str, "'"); + if (sq) { + printf("'%.*s'", (int)sq, str); + } else { + printf("\"'\""); + sq++; + } + str = &str[sq]; + } +} + +int main(int argc, char *argv[]) { + if (argc < 2) return EX_USAGE; + int opt; + optind = 2; + while (0 < (optarg = NULL, opt = getopt(argc, argv, argv[1]))) { + if (opt == '?') return EX_USAGE; + printf(" -%c", opt); + if (optarg) printArg(optarg); + } + printf(" --"); + for (; optind < argc; ++optind) { + printArg(argv[optind]); + } + printf("\n"); +} |