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Add tty check

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This commit is contained in:
Shav Kinderlehrer 2023-04-10 14:51:49 -04:00
parent 6a4a706fc9
commit 0d82534b09
1 changed files with 11 additions and 5 deletions
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16
src/main.c
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@ -1,6 +1,7 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <unistd.h>
#include "lib.h" #include "lib.h"
@ -10,12 +11,15 @@
#define RESET "\x1b[0m" #define RESET "\x1b[0m"
int run(char *filename) { int run(char *filename) {
int tty = isatty(STDOUT_FILENO);
FILE *fp = fopen(filename, "r+b"); FILE *fp = fopen(filename, "r+b");
if (fp == NULL) if (fp == NULL)
die("fopen"); die("fopen");
printf("%s%s%s\r\n", INVERT_T, filename, UINVERT_T); if (tty)
fprintf(stderr, "%s%s%s\r\n", INVERT_T, filename, UINVERT_T);
int bufsize = 4; int bufsize = 4;
char *buf; char *buf;
@ -61,7 +65,8 @@ int run(char *filename) {
int padlen = lcpad - intlen(lc); int padlen = lcpad - intlen(lc);
char padding[padlen]; char padding[padlen];
memset(padding, '0', padlen); memset(padding, '0', padlen);
printf("%s%s%d:%s ", GREY, padding, lc, RESET); if (tty)
fprintf(stderr, "%s%s%d:%s ", GREY, padding, lc, RESET);
} }
pc = c; pc = c;
@ -70,14 +75,15 @@ int run(char *filename) {
char *format = formatBytes(&fsize); char *format = formatBytes(&fsize);
printf("%s%.2f %s%s\r\n", INVERT_T, fsize, format, UINVERT_T); if (tty)
fprintf(stderr, "%s%.2f %s%s\r\n", INVERT_T, fsize, format, UINVERT_T);
return 0; return 0;
} }
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
if (argc < 2) { if (argc < 2) {
printf("usage: catclone <FILE>\n"); fprintf(stderr, "usage: catclone <FILE>\n");
die("args"); die("args");
} }
@ -86,7 +92,7 @@ int main(int argc, char *argv[]) {
die("run"); die("run");
if (i + 1 != argc) { if (i + 1 != argc) {
printf("\r\n"); fprintf(stderr, "\r\n");
} }
} }