now with stdio
This commit is contained in:
parent
c2496ab0e8
commit
7392e319a9
32
peek/peek.c
32
peek/peek.c
@ -1,5 +1,6 @@
|
||||
#include <errno.h> /* errno */
|
||||
#include <stdio.h> /* fprintf(3), getc(3), putc(3), EOF, NULL */
|
||||
#include <stdio.h> /* fprintf(3), getc(3), putc(3), stderr, stdin, stdout, EOF,
|
||||
* NULL */
|
||||
#include <stdlib.h> /* size_t */
|
||||
#include <string.h> /* strerror(3) */
|
||||
#if !defined EX_OK || !defined EX_OSERR || !defined EX_USAGE
|
||||
@ -7,8 +8,7 @@
|
||||
#endif
|
||||
#include <termios.h> /* tcgetattr(3), tcsetattr(3), struct termios, ECHO */
|
||||
#include <unistd.h> /* dup(2), execvp(3), fork(2), getopt(3), isatty(3),
|
||||
* pipe(2), write(2), STDERR_FILENO, STDIN_FILENO,
|
||||
* STDOUT_FILENO */
|
||||
* pipe(2), STDIN_FILENO */
|
||||
|
||||
static char *program_name = "peek";
|
||||
|
||||
@ -17,7 +17,11 @@ int main(int argc, char *argv[]){
|
||||
int eof;
|
||||
size_t i;
|
||||
char include_eof;
|
||||
int outputs[] = {0 /* stdout */, 0 /* stderr */, 0 /* -p */};
|
||||
FILE *outputs[] = {
|
||||
NULL /* stdout */,
|
||||
NULL /* stderr */,
|
||||
NULL /* -p */
|
||||
};
|
||||
int p[2] = {0, 0};
|
||||
struct termios t;
|
||||
|
||||
@ -28,15 +32,15 @@ int main(int argc, char *argv[]){
|
||||
include_eof = 0;
|
||||
while((c = getopt(argc, argv, "1enopt")) != -1)
|
||||
switch(c){
|
||||
case '1': eof = '\n'; break;
|
||||
case 'n': include_eof = 1; break;
|
||||
case 'o': outputs[0] = STDOUT_FILENO; break;
|
||||
case 'e': outputs[1] = STDERR_FILENO; break;
|
||||
case '1': eof = '\n'; break;
|
||||
case 'n': include_eof = 1; break;
|
||||
case 'o': outputs[0] = stdout; break;
|
||||
case 'e': outputs[1] = stderr; break;
|
||||
case 'p':
|
||||
if(pipe(p) != 0)
|
||||
goto die;
|
||||
else
|
||||
outputs[2] = p[1];
|
||||
else if((outputs[2] = fdopen(p[1], "ab")) == NULL)
|
||||
goto die;
|
||||
break;
|
||||
case 't':
|
||||
if(isatty(STDIN_FILENO) != 1){
|
||||
@ -78,14 +82,12 @@ usage: fprintf(stderr, "Usage: %s (-1enot)"
|
||||
t.c_lflag ^= ECHO;
|
||||
tcsetattr(STDIN_FILENO, TCSAFLUSH, &t);
|
||||
|
||||
/* TODO redesign with fdopen(3) to use stdio for output */
|
||||
do{ if((c = getc(stdin)) != eof || include_eof)
|
||||
for(i = 0; i < (sizeof outputs)/(sizeof *outputs); ++i)
|
||||
if(outputs[i] != 0
|
||||
&& write(outputs[i], &c, 1)
|
||||
== -1){
|
||||
if(outputs[i] != NULL
|
||||
&& putc(c, outputs[i]) == EOF){
|
||||
if(i == 2)
|
||||
close(outputs[i]);
|
||||
fclose(outputs[i]);
|
||||
outputs[i] = 0;
|
||||
}
|
||||
}while(c != eof);
|
||||
|
Loading…
Reference in New Issue
Block a user