115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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type.c
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Lets you move the tty cursor around and easily issue ANSI escape codes.
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*******************************************************************************/
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#include <sys/keycodes.h>
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#include <sys/termmode.h>
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#include <errno.h>
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#include <error.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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static void help(FILE* fp, const char* argv0)
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{
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fprintf(fp, "Usage: %s [OPTION]...\n", argv0);
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fprintf(fp, "Lets you type freely onto the tty.\n");
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}
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static void version(FILE* fp, const char* argv0)
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{
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fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
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fprintf(fp, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
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fprintf(fp, "This is free software: you are free to change and redistribute it.\n");
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fprintf(fp, "There is NO WARRANTY, to the extent permitted by law.\n");
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}
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int main(int argc, char* argv[])
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{
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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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default:
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fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
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help(stderr, argv0);
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exit(1);
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}
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}
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else if ( !strcmp(arg, "--help") )
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help(stdout, argv0), exit(0);
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else if ( !strcmp(arg, "--version") )
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version(stdout, argv0), exit(0);
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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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help(stderr, argv0);
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exit(1);
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}
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}
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if ( !isatty(0) || !isatty(1) )
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{
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error(1, errno, "standard output and input must be a tty");
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}
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bool lastwasesc = false;
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unsigned termmode = TERMMODE_KBKEY | TERMMODE_UNICODE | TERMMODE_SIGNAL;
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if ( settermmode(0, termmode) ) { error(1, errno, "settermmode"); }
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while ( true )
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{
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uint32_t codepoint;
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ssize_t numbytes = read(0, &codepoint, sizeof(codepoint));
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if ( !numbytes ) { break; }
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if ( numbytes < 0 ) { break; }
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int kbkey = KBKEY_DECODE(codepoint);
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if ( kbkey < 0 ) { continue; }
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if ( kbkey == KBKEY_UP ) { printf("\e[A"); fflush(stdout); continue; }
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if ( kbkey == KBKEY_DOWN ) { printf("\e[B"); fflush(stdout); continue; }
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if ( kbkey == KBKEY_RIGHT ) { printf("\e[C"); fflush(stdout); continue; }
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if ( kbkey == KBKEY_LEFT ) { printf("\e[D"); fflush(stdout); continue; }
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if ( kbkey == KBKEY_ESC ) { printf("\e["); fflush(stdout); lastwasesc = true; continue; }
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if ( kbkey ) { continue; }
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if ( lastwasesc && codepoint == '[' ) { continue; }
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if ( codepoint >= 0x80 ) { continue; }
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putchar(codepoint & 0xFF);
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lastwasesc = false;
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fflush(stdout);
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}
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return 0;
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}
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