Index: llvm/utils/lit/lit/TestRunner.py =================================================================== --- llvm/utils/lit/lit/TestRunner.py +++ llvm/utils/lit/lit/TestRunner.py @@ -5,6 +5,7 @@ import io import itertools import getopt +import locale import os, signal, subprocess, sys import re import stat @@ -415,32 +416,21 @@ return path, sorted(child_trees) def compareTwoFiles(filepaths): - compare_bytes = False - encoding = None filelines = [] for file in filepaths: - try: - with open(file, 'r') as f: - filelines.append(f.readlines()) - except UnicodeDecodeError: - try: - with io.open(file, 'r', encoding="utf-8") as f: - filelines.append(f.readlines()) - encoding = "utf-8" - except: - compare_bytes = True - - if compare_bytes: - return compareTwoBinaryFiles(filepaths) - else: - return compareTwoTextFiles(filepaths, encoding) + with open(file, 'rb') as file_bin: + filelines.append(file_bin.readlines()) - def compareTwoBinaryFiles(filepaths): - filelines = [] - for file in filepaths: - with open(file, 'rb') as f: - filelines.append(f.readlines()) + try: + return compareTwoTextFiles(filepaths, filelines, + locale.getpreferredencoding(False)) + except UnicodeDecodeError: + try: + return compareTwoTextFiles(filepaths, filelines, "utf-8") + except: + return compareTwoBinaryFiles(filepaths, filelines) + def compareTwoBinaryFiles(filepaths, filelines): exitCode = 0 if hasattr(difflib, 'diff_bytes'): # python 3.5 or newer @@ -448,7 +438,7 @@ filelines[1], filepaths[0].encode(), filepaths[1].encode(), n = num_context_lines) - diffs = [diff.decode() for diff in diffs] + diffs = [diff.decode(errors="backslashreplace") for diff in diffs] else: # python 2.7 func = difflib.unified_diff if unified_diff else difflib.context_diff @@ -456,19 +446,18 @@ n = num_context_lines) for diff in diffs: - stdout.write(diff) + stdout.write(to_string(diff)) exitCode = 1 return exitCode - def compareTwoTextFiles(filepaths, encoding): + def compareTwoTextFiles(filepaths, filelines_bin, encoding): filelines = [] - for file in filepaths: - if encoding is None: - with open(file, 'r') as f: - filelines.append(f.readlines()) - else: - with io.open(file, 'r', encoding=encoding) as f: - filelines.append(f.readlines()) + for lines_bin in filelines_bin: + lines = [] + for line_bin in lines_bin: + line = line_bin.decode(encoding=encoding) + lines.append(line) + filelines.append(lines) exitCode = 0 def compose2(f, g): @@ -488,7 +477,7 @@ func = difflib.unified_diff if unified_diff else difflib.context_diff for diff in func(filelines[0], filelines[1], filepaths[0], filepaths[1], n = num_context_lines): - stdout.write(diff) + stdout.write(to_string(diff)) exitCode = 1 return exitCode Index: llvm/utils/lit/tests/Inputs/shtest-shell/diff-encodings.txt =================================================================== --- /dev/null +++ llvm/utils/lit/tests/Inputs/shtest-shell/diff-encodings.txt @@ -0,0 +1,9 @@ +# Check that diff falls back to binary mode if it cannot decode a file. + +# RUN: diff -u diff-in.bin diff-in.bin +# RUN: diff -u diff-in.utf16 diff-in.bin && false || true +# RUN: diff -u diff-in.utf8 diff-in.bin && false || true +# RUN: diff -u diff-in.bin diff-in.utf8 && false || true + +# Fail so lit will print output. +# RUN: false Index: llvm/utils/lit/tests/Inputs/shtest-shell/diff-in.utf8 =================================================================== --- /dev/null +++ llvm/utils/lit/tests/Inputs/shtest-shell/diff-in.utf8 @@ -0,0 +1,3 @@ +foo +bar +baz Index: llvm/utils/lit/tests/max-failures.py =================================================================== --- llvm/utils/lit/tests/max-failures.py +++ llvm/utils/lit/tests/max-failures.py @@ -8,7 +8,7 @@ # # END. -# CHECK: Failing Tests (30) +# CHECK: Failing Tests (31) # CHECK: Failing Tests (1) # CHECK: Failing Tests (2) # CHECK: error: argument --max-failures: requires positive integer, but found '0' Index: llvm/utils/lit/tests/shtest-shell.py =================================================================== --- llvm/utils/lit/tests/shtest-shell.py +++ llvm/utils/lit/tests/shtest-shell.py @@ -34,6 +34,58 @@ # CHECK: error: command failed with exit status: 127 # CHECK: *** + +# CHECK: FAIL: shtest-shell :: diff-encodings.txt +# CHECK: *** TEST 'shtest-shell :: diff-encodings.txt' FAILED *** + +# CHECK: $ "diff" "-u" "diff-in.bin" "diff-in.bin" +# CHECK-NOT: error + +# CHECK: $ "diff" "-u" "diff-in.utf16" "diff-in.bin" +# CHECK: # command output: +# CHECK-NEXT: --- +# CHECK-NEXT: +++ +# CHECK-NEXT: @@ +# CHECK-NEXT: {{^ .f.o.o.$}} +# CHECK-NEXT: {{^-.b.a.r.$}} +# CHECK-NEXT: {{^\+.b.a.r..}} +# CHECK-NEXT: {{^ .b.a.z.$}} +# CHECK: error: command failed with exit status: 1 +# CHECK: $ "true" + +# CHECK: $ "diff" "-u" "diff-in.utf8" "diff-in.bin" +# CHECK: # command output: +# CHECK-NEXT: --- +# CHECK-NEXT: +++ +# CHECK-NEXT: @@ +# CHECK-NEXT: -foo +# CHECK-NEXT: -bar +# CHECK-NEXT: -baz +# CHECK-NEXT: {{^\+.f.o.o.$}} +# CHECK-NEXT: {{^\+.b.a.r..}} +# CHECK-NEXT: {{^\+.b.a.z.$}} +# CHECK: error: command failed with exit status: 1 +# CHECK: $ "true" + +# CHECK: $ "diff" "-u" "diff-in.bin" "diff-in.utf8" +# CHECK: # command output: +# CHECK-NEXT: --- +# CHECK-NEXT: +++ +# CHECK-NEXT: @@ +# CHECK-NEXT: {{^\-.f.o.o.$}} +# CHECK-NEXT: {{^\-.b.a.r..}} +# CHECK-NEXT: {{^\-.b.a.z.$}} +# CHECK-NEXT: +foo +# CHECK-NEXT: +bar +# CHECK-NEXT: +baz +# CHECK: error: command failed with exit status: 1 +# CHECK: $ "true" + +# CHECK: $ "false" + +# CHECK: *** + + # CHECK: FAIL: shtest-shell :: diff-error-0.txt # CHECK: *** TEST 'shtest-shell :: diff-error-0.txt' FAILED *** # CHECK: $ "diff" "diff-error-0.txt" "diff-error-0.txt" @@ -308,4 +360,4 @@ # CHECK: PASS: shtest-shell :: sequencing-0.txt # CHECK: XFAIL: shtest-shell :: sequencing-1.txt # CHECK: PASS: shtest-shell :: valid-shell.txt -# CHECK: Failing Tests (30) +# CHECK: Failing Tests (31)