139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
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* Copyright (c) 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* chkblayout.c
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* Changes the current keyboard layout.
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*/
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <error.h>
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#include <fcntl.h>
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#include <ioleast.h>
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#include <locale.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <termios.h>
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static void compact_arguments(int* argc, char*** argv)
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{
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for ( int i = 0; i < *argc; i++ )
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{
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while ( i < *argc && !(*argv)[i] )
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{
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for ( int n = i; n < *argc; n++ )
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(*argv)[n] = (*argv)[n+1];
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(*argc)--;
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}
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}
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}
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int main(int argc, char* argv[])
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{
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bool list = false;
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setlocale(LC_ALL, "");
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const char* argv0 = argv[0];
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for ( int i = 1; i < argc; i++ )
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{
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const char* arg = argv[i];
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if ( arg[0] != '-' || !arg[1] )
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continue;
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argv[i] = NULL;
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if ( !strcmp(arg, "--") )
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break;
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if ( arg[1] != '-' )
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{
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char c;
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while ( (c = *++arg) ) switch ( c )
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{
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case 'l': list = true; break;
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default:
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fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
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exit(1);
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}
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}
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else if ( !strcmp(arg, "--list") )
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list = true;
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else
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{
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fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
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exit(1);
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}
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}
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compact_arguments(&argc, &argv);
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if ( list )
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{
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if ( 2 <= argc )
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errx(1, "unexpected extra operand");
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execlp("ls", "ls", "/share/kblayout", (const char*) NULL);
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err(127, "ls");
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}
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const char* tty_path = "/dev/tty";
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int tty_fd = open(tty_path, O_WRONLY);
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if ( tty_fd < 0 )
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error(1, errno, "`%s'", tty_path);
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if ( !isatty(tty_fd) )
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error(1, errno, "`%s'", tty_path);
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if ( argc == 1 )
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error(1, 0, "expected new keyboard layout");
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const char* kblayout_path = argv[1];
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if ( !strchr(kblayout_path, '/') )
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{
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char* new_kblayout_path;
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if ( asprintf(&new_kblayout_path, "/share/kblayout/%s", kblayout_path) < 0 )
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error(1, errno, "asprintf");
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kblayout_path = new_kblayout_path;
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}
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int kblayout_fd = open(kblayout_path, O_RDONLY);
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if ( kblayout_fd < 0 )
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error(1, errno, "`%s'", kblayout_path);
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struct stat kblayout_st;
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if ( fstat(kblayout_fd, &kblayout_st) < 0 )
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error(1, errno, "stat: `%s'", kblayout_path);
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if ( SIZE_MAX < (size_t) kblayout_st.st_size )
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error(1, EFBIG, "`%s'", kblayout_path);
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size_t kblayout_size = (size_t) kblayout_st.st_size;
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unsigned char* kblayout = (unsigned char*) malloc(kblayout_size);
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if ( !kblayout )
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error(1, errno, "malloc");
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if ( readall(kblayout_fd, kblayout, kblayout_size) != kblayout_size )
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error(1, errno, "read: `%s'", kblayout_path);
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close(kblayout_fd);
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if ( tcsetblob(tty_fd, "kblayout", kblayout, kblayout_size) < 0 )
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error(1, errno, "tcsetblob(\"kblayout\", `%s')", kblayout_path);
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free(kblayout);
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close(tty_fd);
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return 0;
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}
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