91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
#include <sys/keycodes.h>
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#include <sys/termmode.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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#include <error.h>
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int cat(int argc, char* argv[])
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{
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int result = 0;
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for ( int i = 1; i < argc; i++ )
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{
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int fd = open(argv[i], O_RDONLY);
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if ( fd < 0 )
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{
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error(0, errno, "%s", argv[i]);
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result = 1;
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continue;
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}
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do
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{
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const size_t BUFFER_SIZE = 255;
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char buffer[BUFFER_SIZE+1];
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ssize_t bytesread = read(fd, buffer, BUFFER_SIZE);
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if ( bytesread == 0 ) { break; }
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if ( bytesread < 0 )
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{
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error(0, errno, "read: %s", argv[i]);
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result = 1;
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break;
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}
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if ( writeall(1, buffer, bytesread) )
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{
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error(0, errno, "write: %s", argv[i]);
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result = 1;
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break;
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}
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} while ( true );
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close(fd);
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}
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return result;
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}
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int main(int argc, char* argv[])
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{
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if ( 1 < argc )
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{
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return cat(argc, argv);
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}
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bool lastwasesc = false;
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// TODO: This is just compatibility with how cat worked in early versions of
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// Sortix. Ideally, this should be removed and just cat the raw stdin.
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// Read the keyboard input from the user.
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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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char msg[2]; msg[0] = codepoint; msg[1] = '\0';
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printf(msg);
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fflush(stdout);
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lastwasesc = false;
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}
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return 0;
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}
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