4 # Performs `cat` and `grep` simultaneously for `run-make` tests in the Rust CI.
6 # This program will read lines from stdin and print them to stdout immediately.
7 # At the same time, it will check if the input line contains the substring or
8 # regex specified in the command line. If any match is found, the program will
9 # set the exit code to 0, otherwise 1.
11 # This is written to simplify debugging runmake tests. Since `grep` swallows all
12 # output, when a test involving `grep` failed, it is impossible to know the
13 # reason just by reading the failure log. While it is possible to `tee` the
14 # output into another stream, it becomes pretty annoying to do this for all test
18 cat-and-grep.sh [-v] [-e] [-i] s1 s2 s3 ... < input.txt
20 Prints the stdin, and exits successfully only if all of `sN` can be found in
21 some lines of the input.
24 -v Invert match, exits successfully only if all of `sN` cannot be found
25 -e Regex search, search using extended Regex instead of fixed string
26 -i Case insensitive search.
32 while getopts ':vieh' OPTION; do
36 ERROR_MSG='should not be found'
39 GREPFLAGS="i$GREPFLAGS"
56 # use gnu version of tool if available (for bsd)
57 if command -v "g${GREPPER}"; then
61 LOG=$(mktemp -t cgrep.XXXXXX)
62 trap "rm -f $LOG" EXIT
64 printf "[[[ begin stdout ]]]\n\033[90m"
66 echo >> "$LOG" # ensure at least 1 line of output, otherwise `grep -v` may unconditionally fail.
67 printf "\033[0m\n[[[ end stdout ]]]\n"
71 if "$GREPPER" "-$GREPFLAGS" -- "$MATCH" "$LOG"; then
72 if [ "$INVERT" = 1 ]; then
73 printf "\033[1;31mError: should not match: %s\033[0m\n" "$MATCH"
77 if [ "$INVERT" = 0 ]; then
78 printf "\033[1;31mError: cannot match: %s\033[0m\n" "$MATCH"