Skip empty lines and newlines

soveran · Mar 15, 2018 · 144a659 · 144a659
1 parent 4cc5405
commit 144a659
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Showing 3 changed files with 10 additions and 3 deletions.
diff --git a/map.c b/map.c
@@ -43,8 +43,14 @@ int main(int argc, char **argv) {
 	ssize_t llen;
 
 	while ((llen = getline(&line, &lcap, stdin)) > 0) {
-		setenv(argv[1], line, 1);
-		system(argv[2]);
+		if (llen > 1) {
+			if (line[llen-1] == '\n') {
+				line[llen-1] = '\0';
+			}
+
+			setenv(argv[1], line, 1);
+			system(argv[2]);
+		}
 	}
 
 	return 0;

diff --git a/test/input b/test/input
@@ -1,3 +1,4 @@
 foo
+
 bar
 baz
diff --git a/test/tests.sh b/test/tests.sh
@@ -5,4 +5,4 @@ assert_equal () {
 }
 
 assert_equal "foofoo" `printf foo | ./map f 'printf $f$f'`
-assert_equal "foobarbaz" `cat ./test/input | ./map f 'printf $f'`
+assert_equal "foobarbaz" `cat ./test/input | ./map f 'printf "$f"'`