118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/*******************************************************************************
|
|
|
|
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
|
|
|
|
This program is free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU 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 General Public License for
|
|
more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
cat.cpp
|
|
Concatenate files and print on the standard output.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <sys/keycodes.h>
|
|
#include <sys/termmode.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <error.h>
|
|
|
|
int docat(const char* inputname, int fd)
|
|
{
|
|
do
|
|
{
|
|
const size_t BUFFER_SIZE = 255;
|
|
char buffer[BUFFER_SIZE+1];
|
|
ssize_t bytesread = read(fd, buffer, BUFFER_SIZE);
|
|
if ( bytesread == 0 ) { break; }
|
|
if ( bytesread < 0 )
|
|
{
|
|
error(0, errno, "read: %s", inputname);
|
|
return 1;
|
|
}
|
|
if ( writeall(1, buffer, bytesread) )
|
|
{
|
|
error(0, errno, "write: %s", inputname);
|
|
return 1;
|
|
}
|
|
} while ( true );
|
|
return 0;
|
|
}
|
|
|
|
int cat(int argc, char* argv[])
|
|
{
|
|
int result = 0;
|
|
|
|
for ( int i = 1; i < argc; i++ )
|
|
{
|
|
int fd = open(argv[i], O_RDONLY);
|
|
if ( fd < 0 )
|
|
{
|
|
error(0, errno, "%s", argv[i]);
|
|
result = 1;
|
|
continue;
|
|
}
|
|
|
|
result |= docat(argv[i], fd);
|
|
close(fd);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
if ( 1 < argc )
|
|
{
|
|
return cat(argc, argv);
|
|
}
|
|
|
|
if ( !isatty(0) || !isatty(1) ) { return docat("<stdin>", 0); }
|
|
|
|
bool lastwasesc = false;
|
|
|
|
// TODO: This is just compatibility with how cat worked in early versions of
|
|
// Sortix. Ideally, this should be removed and just cat the raw stdin.
|
|
// Read the keyboard input from the user.
|
|
unsigned termmode = TERMMODE_KBKEY | TERMMODE_UNICODE | TERMMODE_SIGNAL;
|
|
if ( settermmode(0, termmode) ) { error(1, errno, "settermmode"); }
|
|
while ( true )
|
|
{
|
|
uint32_t codepoint;
|
|
ssize_t numbytes = read(0, &codepoint, sizeof(codepoint));
|
|
if ( !numbytes ) { break; }
|
|
if ( numbytes < 0 ) { break; }
|
|
int kbkey = KBKEY_DECODE(codepoint);
|
|
if ( kbkey < 0 ) { continue; }
|
|
if ( kbkey == KBKEY_UP ) { printf("\e[A"); fflush(stdout); continue; }
|
|
if ( kbkey == KBKEY_DOWN ) { printf("\e[B"); fflush(stdout); continue; }
|
|
if ( kbkey == KBKEY_RIGHT ) { printf("\e[C"); fflush(stdout); continue; }
|
|
if ( kbkey == KBKEY_LEFT ) { printf("\e[D"); fflush(stdout); continue; }
|
|
if ( kbkey == KBKEY_ESC ) { printf("\e["); fflush(stdout); lastwasesc = true; continue; }
|
|
if ( kbkey ) { continue; }
|
|
if ( lastwasesc && codepoint == '[' ) { continue; }
|
|
|
|
if ( codepoint >= 0x80 ) { continue; }
|
|
|
|
char msg[2]; msg[0] = codepoint; msg[1] = '\0';
|
|
printf(msg);
|
|
fflush(stdout);
|
|
lastwasesc = false;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|