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Help command: enough to get going #44

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Merged
stanislaw merged 1 commit into from
Dec 3, 2019
Merged

Help command: enough to get going #44

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25 changes: 25 additions & 0 deletions filecheck/FileCheck.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,26 @@ def similar(a, b):
return SequenceMatcher(None, a, b).ratio()


def print_help():
print("USAGE: FileCheck-macOS [options] <check-file>")
print("")

print("OPTIONS:")
print("")

print("General options:")
print("")
print(" --match-full-lines - Require all positive matches to cover an entire input line.")
print(" Allows leading and trailing whitespace if --strict-whitespace")
print(" is not also passed.")
print(" --strict-whitespace - Do not treat all horizontal whitespace as equivalent")
print("")

print("Generic options:")
print("")
print("--help - Display available options")


def escape_non_regex_or_skip(match_obj):
non_regex = match_obj.group('non_regex')
if non_regex:
Expand Down Expand Up @@ -75,6 +95,11 @@ def dump_check(check):
print("<check-file> not specified")
exit(2)

for arg in sys.argv:
if arg == '--help':
print_help()
exit(0)

check_file = sys.argv[1]
if not os.path.isfile(check_file):
sys.stdout.flush()
Expand Down
19 changes: 19 additions & 0 deletions tests/integration/tests/options/--help/sample.itest
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
; RUN: (%FILECHECK_EXEC --help 2>&1; test $? = 0) | %FILECHECK_TESTER_EXEC %s --strict-whitespace --match-full-lines
; CHECK:{{^.*}}FileCheck{{(\.py)?$}}
; CHECK-NEXT:{{^USAGE: FileCheck.* \[options\] <check-file>$}}
; CHECK-EMPTY:
; CHECK-NEXT:OPTIONS:
; CHECK-EMPTY:

; FileCheck C++ prints options without -- but with - only.
; FileCheck.py is made consistent so below we use regex matches to accomodate
; for both - and -- versions.
; CHECK:General options:
; CHECK-EMPTY:
; CHECK:{{^ --?match-full-lines - Require all positive matches to cover an entire input line.$}}
; CHECK-NEXT:{{^ ?Allows leading and trailing whitespace if --strict-whitespace$}}
; CHECK-NEXT:{{^ ?is not also passed.$}}
; CHECK-NEXT:{{^ --?strict-whitespace - Do not treat all horizontal whitespace as equivalent$}}

; CHECK:{{Generic [Oo]ptions:}}
; CHECK-EMPTY: