This is a maintenance fork
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#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/calls/calls.h"
#include "libc/log/check.h"
#include "libc/log/color.internal.h"
#include "libc/log/log.h"
#include "libc/mem/mem.h"
#include "libc/runtime/gc.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/exit.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/sysv/consts/sig.h"
#define kTutorialMessage "This echos stdio until Ctrl+C is pressed.\n"
#define kVictoryMessage "\rGot Ctrl+C and longjmp() ran dtors (>'.')>\n"
jmp_buf jb;
void GotCtrlC(int sig) {
gclongjmp(jb, 1);
unreachable;
}
size_t HowManyBytesOfHeapMemoryAreAllocated(void) {
return mallinfo().uordblks;
}
void ReadAndPrintLinesLoop(void) {
ssize_t got;
unsigned char *buf;
buf = gc(malloc(BUFSIZ));
CHECK_NE(0, HowManyBytesOfHeapMemoryAreAllocated());
for (;;) {
CHECK_NE(-1, (got = read(STDIN_FILENO, buf, BUFSIZ)));
CHECK_EQ(got, write(STDOUT_FILENO, buf, got));
}
}
int main(int argc, char *argv[]) {
int rc;
rc = 0;
showcrashreports();
if (cancolor()) {
CHECK_EQ(0 /* cosmo runtime doesn't link malloc */,
HowManyBytesOfHeapMemoryAreAllocated());
puts("This echos stdio until Ctrl+C is pressed.");
if (!(rc = setjmp(jb))) {
CHECK_NE(SIG_ERR, signal(SIGINT, GotCtrlC));
ReadAndPrintLinesLoop();
unreachable;
} else {
--rc;
}
CHECK_EQ(0, HowManyBytesOfHeapMemoryAreAllocated());
puts("\rGot Ctrl+C and longjmp() ran dtors (>'.')>");
}
return rc;
}