replace eprint() functions with BSD error functions

[st.git] / std.c

diff --git a/std.c b/std.c
index 84048e4..daf759e 100644 (file)
--- a/std.c
+++ b/std.c
@@ -3,6 +3,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <ctype.h>
+#include <err.h>
 #include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
@@ -73,7 +74,7 @@ getch() {
        if(rbuf.i++ >= rbuf.n) {
                rbuf.n = read(ptm, rbuf.data, LENGTH(rbuf.data));
                if(rbuf.n == -1)
-                       eprintn("error, cannot read from slave pty");
+                       err(EXIT_FAILURE, "cannot read from slave pty");
                rbuf.i = 0;
        }
        return rbuf.data[rbuf.i];
@@ -113,7 +114,7 @@ parseesc(void) {
                                qmark = 1;
                        else if(c == ';') {
                                if(!digit)
-                                       eprint("syntax error\n");
+                                       errx(EXIT_FAILURE, "syntax error");
                                digit = 0;
                                j++;
                        }
@@ -216,7 +217,7 @@ shell(void) {
        pid = fork();
        switch(pid) {
        case -1:
-               eprint("error, cannot fork\n");
+               err(EXIT_FAILURE, "cannot fork");
        case 0:
                setsid();
                dup2(pts, STDIN_FILENO);
@@ -237,7 +238,7 @@ sigchld(int n) {
        int ret;
 
        if(waitpid(pid, &ret, 0) == -1)
-               eprintn("error, waiting for child failed");
+               err(EXIT_FAILURE, "waiting for child failed");
        if(WIFEXITED(ret))
                exit(WEXITSTATUS(ret));
        else
@@ -257,7 +258,7 @@ unbuffer(void) {
 void
 ungetch(int c) {
        if(rbuf.i + 1 >= rbuf.n)
-               eprint("error, read buffer full\n");
+               errx(EXIT_FAILURE, "read buffer full");
        rbuf.data[rbuf.i++] = c;
 }
 
@@ -266,10 +267,14 @@ main(int argc, char *argv[]) {
        fd_set rfds;
        int r;
 
-       if(argc == 2 && !strcmp("-v", argv[1]))
-               eprint("std-"VERSION", © 2008 Matthias-Christian Ott\n");
-       else if(argc == 1)
-               eprint("usage: st [-v]\n");
+       if(argc == 2 && !strcmp("-v", argv[1])) {
+               fprintf(stderr, "std-"VERSION", © 2008 Matthias-Christian Ott\n");
+               exit(EXIT_SUCCESS);
+       }
+       else if(argc == 1) {
+               fprintf(stderr, "usage: st [-v]\n");
+               exit(EXIT_FAILURE);
+       }
        getpty();
        shell();
        FD_ZERO(&rfds);
@@ -278,7 +283,7 @@ main(int argc, char *argv[]) {
        for(;;) {
                r = select(ptm + 1, &rfds, NULL, NULL, NULL);
                if(r == -1)
-                       eprintn("error, cannot select");
+                       err(EXIT_FAILURE, "cannot select");
                if(FD_ISSET(ptm, &rfds)) {
                        do {
                                c = getch();