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author | Rob Landley <rob@landley.net> | 2022-10-04 23:22:27 -0500 |
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committer | Rob Landley <rob@landley.net> | 2022-10-04 23:22:27 -0500 |
commit | b5baa040128e8cc4cda5b5e982f03a0ed92acce3 (patch) | |
tree | d16040a400949e9c82399f0475e4d0db2c0fcf48 | |
parent | 891c5520f493802a78c80ec20429eb107ce72241 (diff) | |
download | toybox-b5baa040128e8cc4cda5b5e982f03a0ed92acce3.tar.gz |
Fix comm - and make comm -123 detect missing files.
-rwxr-xr-x | tests/comm.test | 7 | ||||
-rw-r--r-- | toys/posix/comm.c | 16 |
2 files changed, 13 insertions, 10 deletions
diff --git a/tests/comm.test b/tests/comm.test index 63d9c847..2891c6b2 100755 --- a/tests/comm.test +++ b/tests/comm.test @@ -4,6 +4,9 @@ #testing "name" "command" "result" "infile" "stdin" -for i in a b c ; do echo $i >> lhs ; done +echo -e 'a\nb\nc'> lhs for i in c d e ; do echo $i >> rhs ; done -testing "comm" "comm lhs rhs" "a\nb\n\t\tc\n\td\n\te\n" "" "" +testing "comm" "comm lhs input" "a\nb\n\t\tc\n\td\n\te\n" "c\nd\ne\n" "" +testing "comm -" "comm - input" "a\nb\n\t\tc\n\td\n\te\n" "c\nd\ne\n" "a\nb\nc\n" +testing "comm -123 detects missing" "comm - missing 2>/dev/null || echo here" \ + "here\n" "" "" diff --git a/toys/posix/comm.c b/toys/posix/comm.c index 2d118b7b..91359246 100644 --- a/toys/posix/comm.c +++ b/toys/posix/comm.c @@ -43,26 +43,26 @@ void comm_main(void) { FILE *file[2]; char *line[2]; - int i; + int i = 0; - if (toys.optflags == 7) return; - - for (i = 0; i < 2; i++) { - file[i] = xfopen(toys.optargs[i], "r"); + for (i = 0; i<2; i++) { + file[i] = strcmp(toys.optargs[i], "-")?xfopen(toys.optargs[i], "r"):stdin; line[i] = xgetline(file[i]); } + if (toys.optflags == 7) return; + while (line[0] && line[1]) { int order = strcmp(line[0], line[1]); - if (order == 0) { + if (!order) { writeline(line[0], 2); for (i = 0; i < 2; i++) { free(line[i]); line[i] = xgetline(file[i]); } } else { - i = order < 0 ? 0 : 1; + i = order>0; writeline(line[i], i); free(line[i]); line[i] = xgetline(file[i]); @@ -76,5 +76,5 @@ void comm_main(void) line[i] = xgetline(file[i]); } - if (CFG_TOYBOX_FREE) for (i = 0; i < 2; i++) fclose(file[i]); + if (CFG_TOYBOX_FREE) fclose(file[0]), fclose(file[1]); } |