mirror of
https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
751 lines
25 KiB
C++
751 lines
25 KiB
C++
// Copyright 2008, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: wan@google.com (Zhanyong Wan)
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#include "gtest/internal/gtest-port.h"
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#include <limits.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#if GTEST_OS_WINDOWS_MOBILE
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# include <windows.h> // For TerminateProcess()
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#elif GTEST_OS_WINDOWS
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# include <io.h>
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# include <sys/stat.h>
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#else
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# include <unistd.h>
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#endif // GTEST_OS_WINDOWS_MOBILE
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#if GTEST_OS_MAC
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# include <mach/mach_init.h>
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# include <mach/task.h>
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# include <mach/vm_map.h>
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#endif // GTEST_OS_MAC
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#include "gtest/gtest-spi.h"
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#include "gtest/gtest-message.h"
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#include "gtest/internal/gtest-internal.h"
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#include "gtest/internal/gtest-string.h"
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// Indicates that this translation unit is part of Google Test's
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// implementation. It must come before gtest-internal-inl.h is
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// included, or there will be a compiler error. This trick is to
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// prevent a user from accidentally including gtest-internal-inl.h in
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// his code.
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#define GTEST_IMPLEMENTATION_ 1
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#include "gtest/internal/gtest-internal-inl.h"
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#undef GTEST_IMPLEMENTATION_
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namespace testing {
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namespace internal {
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#if defined(_MSC_VER) || defined(__BORLANDC__)
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// MSVC and C++Builder do not provide a definition of STDERR_FILENO.
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const int kStdOutFileno = 1;
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const int kStdErrFileno = 2;
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#else
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const int kStdOutFileno = STDOUT_FILENO;
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const int kStdErrFileno = STDERR_FILENO;
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#endif // _MSC_VER
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#if GTEST_OS_MAC
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// Returns the number of threads running in the process, or 0 to indicate that
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// we cannot detect it.
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size_t GetThreadCount() {
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const task_t task = mach_task_self();
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mach_msg_type_number_t thread_count;
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thread_act_array_t thread_list;
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const kern_return_t status = task_threads(task, &thread_list, &thread_count);
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if (status == KERN_SUCCESS) {
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// task_threads allocates resources in thread_list and we need to free them
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// to avoid leaks.
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vm_deallocate(task,
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reinterpret_cast<vm_address_t>(thread_list),
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sizeof(thread_t) * thread_count);
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return static_cast<size_t>(thread_count);
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} else {
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return 0;
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}
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}
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#else
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size_t GetThreadCount() {
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// There's no portable way to detect the number of threads, so we just
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// return 0 to indicate that we cannot detect it.
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return 0;
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}
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#endif // GTEST_OS_MAC
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#if GTEST_USES_POSIX_RE
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// Implements RE. Currently only needed for death tests.
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RE::~RE() {
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if (is_valid_) {
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// regfree'ing an invalid regex might crash because the content
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// of the regex is undefined. Since the regex's are essentially
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// the same, one cannot be valid (or invalid) without the other
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// being so too.
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regfree(&partial_regex_);
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regfree(&full_regex_);
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}
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free(const_cast<char*>(pattern_));
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}
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// Returns true iff regular expression re matches the entire str.
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bool RE::FullMatch(const char* str, const RE& re) {
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if (!re.is_valid_) return false;
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regmatch_t match;
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return regexec(&re.full_regex_, str, 1, &match, 0) == 0;
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}
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// Returns true iff regular expression re matches a substring of str
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// (including str itself).
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bool RE::PartialMatch(const char* str, const RE& re) {
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if (!re.is_valid_) return false;
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regmatch_t match;
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return regexec(&re.partial_regex_, str, 1, &match, 0) == 0;
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}
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// Initializes an RE from its string representation.
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void RE::Init(const char* regex) {
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pattern_ = posix::StrDup(regex);
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// Reserves enough bytes to hold the regular expression used for a
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// full match.
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const size_t full_regex_len = strlen(regex) + 10;
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char* const full_pattern = new char[full_regex_len];
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snprintf(full_pattern, full_regex_len, "^(%s)$", regex);
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is_valid_ = regcomp(&full_regex_, full_pattern, REG_EXTENDED) == 0;
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// We want to call regcomp(&partial_regex_, ...) even if the
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// previous expression returns false. Otherwise partial_regex_ may
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// not be properly initialized can may cause trouble when it's
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// freed.
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//
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// Some implementation of POSIX regex (e.g. on at least some
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// versions of Cygwin) doesn't accept the empty string as a valid
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// regex. We change it to an equivalent form "()" to be safe.
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if (is_valid_) {
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const char* const partial_regex = (*regex == '\0') ? "()" : regex;
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is_valid_ = regcomp(&partial_regex_, partial_regex, REG_EXTENDED) == 0;
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}
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EXPECT_TRUE(is_valid_)
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<< "Regular expression \"" << regex
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<< "\" is not a valid POSIX Extended regular expression.";
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delete[] full_pattern;
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}
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#elif GTEST_USES_SIMPLE_RE
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// Returns true iff ch appears anywhere in str (excluding the
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// terminating '\0' character).
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bool IsInSet(char ch, const char* str) {
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return ch != '\0' && strchr(str, ch) != NULL;
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}
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// Returns true iff ch belongs to the given classification. Unlike
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// similar functions in <ctype.h>, these aren't affected by the
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// current locale.
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bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
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bool IsAsciiPunct(char ch) {
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return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~");
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}
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bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); }
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bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
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bool IsAsciiWordChar(char ch) {
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return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') ||
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('0' <= ch && ch <= '9') || ch == '_';
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}
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// Returns true iff "\\c" is a supported escape sequence.
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bool IsValidEscape(char c) {
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return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW"));
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}
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// Returns true iff the given atom (specified by escaped and pattern)
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// matches ch. The result is undefined if the atom is invalid.
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bool AtomMatchesChar(bool escaped, char pattern_char, char ch) {
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if (escaped) { // "\\p" where p is pattern_char.
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switch (pattern_char) {
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case 'd': return IsAsciiDigit(ch);
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case 'D': return !IsAsciiDigit(ch);
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case 'f': return ch == '\f';
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case 'n': return ch == '\n';
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case 'r': return ch == '\r';
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case 's': return IsAsciiWhiteSpace(ch);
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case 'S': return !IsAsciiWhiteSpace(ch);
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case 't': return ch == '\t';
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case 'v': return ch == '\v';
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case 'w': return IsAsciiWordChar(ch);
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case 'W': return !IsAsciiWordChar(ch);
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}
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return IsAsciiPunct(pattern_char) && pattern_char == ch;
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}
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return (pattern_char == '.' && ch != '\n') || pattern_char == ch;
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}
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// Helper function used by ValidateRegex() to format error messages.
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String FormatRegexSyntaxError(const char* regex, int index) {
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return (Message() << "Syntax error at index " << index
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<< " in simple regular expression \"" << regex << "\": ").GetString();
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}
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// Generates non-fatal failures and returns false if regex is invalid;
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// otherwise returns true.
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bool ValidateRegex(const char* regex) {
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if (regex == NULL) {
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// TODO(wan@google.com): fix the source file location in the
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// assertion failures to match where the regex is used in user
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// code.
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ADD_FAILURE() << "NULL is not a valid simple regular expression.";
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return false;
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}
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bool is_valid = true;
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// True iff ?, *, or + can follow the previous atom.
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bool prev_repeatable = false;
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for (int i = 0; regex[i]; i++) {
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if (regex[i] == '\\') { // An escape sequence
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i++;
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if (regex[i] == '\0') {
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ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
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<< "'\\' cannot appear at the end.";
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return false;
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}
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if (!IsValidEscape(regex[i])) {
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ADD_FAILURE() << FormatRegexSyntaxError(regex, i - 1)
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<< "invalid escape sequence \"\\" << regex[i] << "\".";
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is_valid = false;
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}
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prev_repeatable = true;
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} else { // Not an escape sequence.
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const char ch = regex[i];
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if (ch == '^' && i > 0) {
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ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
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<< "'^' can only appear at the beginning.";
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is_valid = false;
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} else if (ch == '$' && regex[i + 1] != '\0') {
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ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
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<< "'$' can only appear at the end.";
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is_valid = false;
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} else if (IsInSet(ch, "()[]{}|")) {
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ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
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<< "'" << ch << "' is unsupported.";
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is_valid = false;
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} else if (IsRepeat(ch) && !prev_repeatable) {
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ADD_FAILURE() << FormatRegexSyntaxError(regex, i)
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<< "'" << ch << "' can only follow a repeatable token.";
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is_valid = false;
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}
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prev_repeatable = !IsInSet(ch, "^$?*+");
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}
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}
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return is_valid;
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}
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// Matches a repeated regex atom followed by a valid simple regular
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// expression. The regex atom is defined as c if escaped is false,
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// or \c otherwise. repeat is the repetition meta character (?, *,
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// or +). The behavior is undefined if str contains too many
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// characters to be indexable by size_t, in which case the test will
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// probably time out anyway. We are fine with this limitation as
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// std::string has it too.
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bool MatchRepetitionAndRegexAtHead(
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bool escaped, char c, char repeat, const char* regex,
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const char* str) {
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const size_t min_count = (repeat == '+') ? 1 : 0;
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const size_t max_count = (repeat == '?') ? 1 :
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static_cast<size_t>(-1) - 1;
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// We cannot call numeric_limits::max() as it conflicts with the
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// max() macro on Windows.
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for (size_t i = 0; i <= max_count; ++i) {
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// We know that the atom matches each of the first i characters in str.
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if (i >= min_count && MatchRegexAtHead(regex, str + i)) {
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// We have enough matches at the head, and the tail matches too.
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// Since we only care about *whether* the pattern matches str
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// (as opposed to *how* it matches), there is no need to find a
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// greedy match.
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return true;
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}
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if (str[i] == '\0' || !AtomMatchesChar(escaped, c, str[i]))
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return false;
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}
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return false;
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}
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// Returns true iff regex matches a prefix of str. regex must be a
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// valid simple regular expression and not start with "^", or the
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// result is undefined.
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bool MatchRegexAtHead(const char* regex, const char* str) {
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if (*regex == '\0') // An empty regex matches a prefix of anything.
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return true;
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// "$" only matches the end of a string. Note that regex being
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// valid guarantees that there's nothing after "$" in it.
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if (*regex == '$')
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return *str == '\0';
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// Is the first thing in regex an escape sequence?
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const bool escaped = *regex == '\\';
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if (escaped)
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++regex;
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if (IsRepeat(regex[1])) {
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// MatchRepetitionAndRegexAtHead() calls MatchRegexAtHead(), so
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// here's an indirect recursion. It terminates as the regex gets
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// shorter in each recursion.
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return MatchRepetitionAndRegexAtHead(
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escaped, regex[0], regex[1], regex + 2, str);
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} else {
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// regex isn't empty, isn't "$", and doesn't start with a
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// repetition. We match the first atom of regex with the first
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// character of str and recurse.
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return (*str != '\0') && AtomMatchesChar(escaped, *regex, *str) &&
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MatchRegexAtHead(regex + 1, str + 1);
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}
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}
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// Returns true iff regex matches any substring of str. regex must be
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// a valid simple regular expression, or the result is undefined.
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//
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// The algorithm is recursive, but the recursion depth doesn't exceed
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// the regex length, so we won't need to worry about running out of
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// stack space normally. In rare cases the time complexity can be
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// exponential with respect to the regex length + the string length,
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// but usually it's must faster (often close to linear).
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bool MatchRegexAnywhere(const char* regex, const char* str) {
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if (regex == NULL || str == NULL)
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return false;
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if (*regex == '^')
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return MatchRegexAtHead(regex + 1, str);
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// A successful match can be anywhere in str.
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do {
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if (MatchRegexAtHead(regex, str))
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return true;
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} while (*str++ != '\0');
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return false;
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}
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// Implements the RE class.
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RE::~RE() {
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free(const_cast<char*>(pattern_));
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free(const_cast<char*>(full_pattern_));
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}
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// Returns true iff regular expression re matches the entire str.
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bool RE::FullMatch(const char* str, const RE& re) {
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return re.is_valid_ && MatchRegexAnywhere(re.full_pattern_, str);
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}
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// Returns true iff regular expression re matches a substring of str
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// (including str itself).
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bool RE::PartialMatch(const char* str, const RE& re) {
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return re.is_valid_ && MatchRegexAnywhere(re.pattern_, str);
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}
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// Initializes an RE from its string representation.
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void RE::Init(const char* regex) {
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pattern_ = full_pattern_ = NULL;
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if (regex != NULL) {
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pattern_ = posix::StrDup(regex);
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}
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is_valid_ = ValidateRegex(regex);
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if (!is_valid_) {
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// No need to calculate the full pattern when the regex is invalid.
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return;
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}
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const size_t len = strlen(regex);
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// Reserves enough bytes to hold the regular expression used for a
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// full match: we need space to prepend a '^', append a '$', and
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// terminate the string with '\0'.
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char* buffer = static_cast<char*>(malloc(len + 3));
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full_pattern_ = buffer;
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if (*regex != '^')
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*buffer++ = '^'; // Makes sure full_pattern_ starts with '^'.
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// We don't use snprintf or strncpy, as they trigger a warning when
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// compiled with VC++ 8.0.
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memcpy(buffer, regex, len);
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buffer += len;
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if (len == 0 || regex[len - 1] != '$')
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*buffer++ = '$'; // Makes sure full_pattern_ ends with '$'.
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*buffer = '\0';
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}
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#endif // GTEST_USES_POSIX_RE
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const char kUnknownFile[] = "unknown file";
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// Formats a source file path and a line number as they would appear
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// in an error message from the compiler used to compile this code.
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GTEST_API_ ::std::string FormatFileLocation(const char* file, int line) {
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const char* const file_name = file == NULL ? kUnknownFile : file;
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if (line < 0) {
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return String::Format("%s:", file_name).c_str();
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}
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#ifdef _MSC_VER
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return String::Format("%s(%d):", file_name, line).c_str();
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#else
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return String::Format("%s:%d:", file_name, line).c_str();
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#endif // _MSC_VER
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}
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// Formats a file location for compiler-independent XML output.
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// Although this function is not platform dependent, we put it next to
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// FormatFileLocation in order to contrast the two functions.
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// Note that FormatCompilerIndependentFileLocation() does NOT append colon
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// to the file location it produces, unlike FormatFileLocation().
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GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(
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const char* file, int line) {
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const char* const file_name = file == NULL ? kUnknownFile : file;
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if (line < 0)
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return file_name;
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else
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return String::Format("%s:%d", file_name, line).c_str();
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}
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GTestLog::GTestLog(GTestLogSeverity severity, const char* file, int line)
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: severity_(severity) {
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const char* const marker =
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severity == GTEST_INFO ? "[ INFO ]" :
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severity == GTEST_WARNING ? "[WARNING]" :
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severity == GTEST_ERROR ? "[ ERROR ]" : "[ FATAL ]";
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GetStream() << ::std::endl << marker << " "
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<< FormatFileLocation(file, line).c_str() << ": ";
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}
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// Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
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GTestLog::~GTestLog() {
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GetStream() << ::std::endl;
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if (severity_ == GTEST_FATAL) {
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fflush(stderr);
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posix::Abort();
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}
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}
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|
// Disable Microsoft deprecation warnings for POSIX functions called from
|
|
// this class (creat, dup, dup2, and close)
|
|
#ifdef _MSC_VER
|
|
# pragma warning(push)
|
|
# pragma warning(disable: 4996)
|
|
#endif // _MSC_VER
|
|
|
|
#if GTEST_HAS_STREAM_REDIRECTION
|
|
|
|
// Object that captures an output stream (stdout/stderr).
|
|
class CapturedStream {
|
|
public:
|
|
// The ctor redirects the stream to a temporary file.
|
|
CapturedStream(int fd) : fd_(fd), uncaptured_fd_(dup(fd)) {
|
|
|
|
# if GTEST_OS_WINDOWS
|
|
char temp_dir_path[MAX_PATH + 1] = { '\0' }; // NOLINT
|
|
char temp_file_path[MAX_PATH + 1] = { '\0' }; // NOLINT
|
|
|
|
::GetTempPathA(sizeof(temp_dir_path), temp_dir_path);
|
|
const UINT success = ::GetTempFileNameA(temp_dir_path,
|
|
"gtest_redir",
|
|
0, // Generate unique file name.
|
|
temp_file_path);
|
|
GTEST_CHECK_(success != 0)
|
|
<< "Unable to create a temporary file in " << temp_dir_path;
|
|
const int captured_fd = creat(temp_file_path, _S_IREAD | _S_IWRITE);
|
|
GTEST_CHECK_(captured_fd != -1) << "Unable to open temporary file "
|
|
<< temp_file_path;
|
|
filename_ = temp_file_path;
|
|
#elif GTEST_OS_LINUX_ANDROID
|
|
char name_template[] = "/sdcard/captured_stderr.XXXXXX";
|
|
const int captured_fd = mkstemp(name_template);
|
|
filename_ = name_template;
|
|
# else
|
|
// There's no guarantee that a test has write access to the
|
|
// current directory, so we create the temporary file in the /tmp
|
|
// directory instead.
|
|
char name_template[] = "/tmp/captured_stream.XXXXXX";
|
|
const int captured_fd = mkstemp(name_template);
|
|
filename_ = name_template;
|
|
# endif // GTEST_OS_WINDOWS
|
|
fflush(NULL);
|
|
dup2(captured_fd, fd_);
|
|
close(captured_fd);
|
|
}
|
|
|
|
~CapturedStream() {
|
|
remove(filename_.c_str());
|
|
}
|
|
|
|
String GetCapturedString() {
|
|
if (uncaptured_fd_ != -1) {
|
|
// Restores the original stream.
|
|
fflush(NULL);
|
|
dup2(uncaptured_fd_, fd_);
|
|
close(uncaptured_fd_);
|
|
uncaptured_fd_ = -1;
|
|
}
|
|
|
|
FILE* const file = posix::FOpen(filename_.c_str(), "r");
|
|
const String content = ReadEntireFile(file);
|
|
posix::FClose(file);
|
|
return content;
|
|
}
|
|
|
|
private:
|
|
// Reads the entire content of a file as a String.
|
|
static String ReadEntireFile(FILE* file);
|
|
|
|
// Returns the size (in bytes) of a file.
|
|
static size_t GetFileSize(FILE* file);
|
|
|
|
const int fd_; // A stream to capture.
|
|
int uncaptured_fd_;
|
|
// Name of the temporary file holding the stderr output.
|
|
::std::string filename_;
|
|
|
|
GTEST_DISALLOW_COPY_AND_ASSIGN_(CapturedStream);
|
|
};
|
|
|
|
// Returns the size (in bytes) of a file.
|
|
size_t CapturedStream::GetFileSize(FILE* file) {
|
|
fseek(file, 0, SEEK_END);
|
|
return static_cast<size_t>(ftell(file));
|
|
}
|
|
|
|
// Reads the entire content of a file as a string.
|
|
String CapturedStream::ReadEntireFile(FILE* file) {
|
|
const size_t file_size = GetFileSize(file);
|
|
char* const buffer = new char[file_size];
|
|
|
|
size_t bytes_last_read = 0; // # of bytes read in the last fread()
|
|
size_t bytes_read = 0; // # of bytes read so far
|
|
|
|
fseek(file, 0, SEEK_SET);
|
|
|
|
// Keeps reading the file until we cannot read further or the
|
|
// pre-determined file size is reached.
|
|
do {
|
|
bytes_last_read = fread(buffer+bytes_read, 1, file_size-bytes_read, file);
|
|
bytes_read += bytes_last_read;
|
|
} while (bytes_last_read > 0 && bytes_read < file_size);
|
|
|
|
const String content(buffer, bytes_read);
|
|
delete[] buffer;
|
|
|
|
return content;
|
|
}
|
|
|
|
# ifdef _MSC_VER
|
|
# pragma warning(pop)
|
|
# endif // _MSC_VER
|
|
|
|
static CapturedStream* g_captured_stderr = NULL;
|
|
static CapturedStream* g_captured_stdout = NULL;
|
|
|
|
// Starts capturing an output stream (stdout/stderr).
|
|
void CaptureStream(int fd, const char* stream_name, CapturedStream** stream) {
|
|
if (*stream != NULL) {
|
|
GTEST_LOG_(FATAL) << "Only one " << stream_name
|
|
<< " capturer can exist at a time.";
|
|
}
|
|
*stream = new CapturedStream(fd);
|
|
}
|
|
|
|
// Stops capturing the output stream and returns the captured string.
|
|
String GetCapturedStream(CapturedStream** captured_stream) {
|
|
const String content = (*captured_stream)->GetCapturedString();
|
|
|
|
delete *captured_stream;
|
|
*captured_stream = NULL;
|
|
|
|
return content;
|
|
}
|
|
|
|
// Starts capturing stdout.
|
|
void CaptureStdout() {
|
|
CaptureStream(kStdOutFileno, "stdout", &g_captured_stdout);
|
|
}
|
|
|
|
// Starts capturing stderr.
|
|
void CaptureStderr() {
|
|
CaptureStream(kStdErrFileno, "stderr", &g_captured_stderr);
|
|
}
|
|
|
|
// Stops capturing stdout and returns the captured string.
|
|
String GetCapturedStdout() { return GetCapturedStream(&g_captured_stdout); }
|
|
|
|
// Stops capturing stderr and returns the captured string.
|
|
String GetCapturedStderr() { return GetCapturedStream(&g_captured_stderr); }
|
|
|
|
#endif // GTEST_HAS_STREAM_REDIRECTION
|
|
|
|
#if GTEST_HAS_DEATH_TEST
|
|
|
|
// A copy of all command line arguments. Set by InitGoogleTest().
|
|
::std::vector<String> g_argvs;
|
|
|
|
// Returns the command line as a vector of strings.
|
|
const ::std::vector<String>& GetArgvs() { return g_argvs; }
|
|
|
|
#endif // GTEST_HAS_DEATH_TEST
|
|
|
|
#if GTEST_OS_WINDOWS_MOBILE
|
|
namespace posix {
|
|
void Abort() {
|
|
DebugBreak();
|
|
TerminateProcess(GetCurrentProcess(), 1);
|
|
}
|
|
} // namespace posix
|
|
#endif // GTEST_OS_WINDOWS_MOBILE
|
|
|
|
// Returns the name of the environment variable corresponding to the
|
|
// given flag. For example, FlagToEnvVar("foo") will return
|
|
// "GTEST_FOO" in the open-source version.
|
|
static String FlagToEnvVar(const char* flag) {
|
|
const String full_flag =
|
|
(Message() << GTEST_FLAG_PREFIX_ << flag).GetString();
|
|
|
|
Message env_var;
|
|
for (size_t i = 0; i != full_flag.length(); i++) {
|
|
env_var << ToUpper(full_flag.c_str()[i]);
|
|
}
|
|
|
|
return env_var.GetString();
|
|
}
|
|
|
|
// Parses 'str' for a 32-bit signed integer. If successful, writes
|
|
// the result to *value and returns true; otherwise leaves *value
|
|
// unchanged and returns false.
|
|
bool ParseInt32(const Message& src_text, const char* str, Int32* value) {
|
|
// Parses the environment variable as a decimal integer.
|
|
char* end = NULL;
|
|
const long long_value = strtol(str, &end, 10); // NOLINT
|
|
|
|
// Has strtol() consumed all characters in the string?
|
|
if (*end != '\0') {
|
|
// No - an invalid character was encountered.
|
|
Message msg;
|
|
msg << "WARNING: " << src_text
|
|
<< " is expected to be a 32-bit integer, but actually"
|
|
<< " has value \"" << str << "\".\n";
|
|
printf("%s", msg.GetString().c_str());
|
|
fflush(stdout);
|
|
return false;
|
|
}
|
|
|
|
// Is the parsed value in the range of an Int32?
|
|
const Int32 result = static_cast<Int32>(long_value);
|
|
if (long_value == LONG_MAX || long_value == LONG_MIN ||
|
|
// The parsed value overflows as a long. (strtol() returns
|
|
// LONG_MAX or LONG_MIN when the input overflows.)
|
|
result != long_value
|
|
// The parsed value overflows as an Int32.
|
|
) {
|
|
Message msg;
|
|
msg << "WARNING: " << src_text
|
|
<< " is expected to be a 32-bit integer, but actually"
|
|
<< " has value " << str << ", which overflows.\n";
|
|
printf("%s", msg.GetString().c_str());
|
|
fflush(stdout);
|
|
return false;
|
|
}
|
|
|
|
*value = result;
|
|
return true;
|
|
}
|
|
|
|
// Reads and returns the Boolean environment variable corresponding to
|
|
// the given flag; if it's not set, returns default_value.
|
|
//
|
|
// The value is considered true iff it's not "0".
|
|
bool BoolFromGTestEnv(const char* flag, bool default_value) {
|
|
const String env_var = FlagToEnvVar(flag);
|
|
const char* const string_value = posix::GetEnv(env_var.c_str());
|
|
return string_value == NULL ?
|
|
default_value : strcmp(string_value, "0") != 0;
|
|
}
|
|
|
|
// Reads and returns a 32-bit integer stored in the environment
|
|
// variable corresponding to the given flag; if it isn't set or
|
|
// doesn't represent a valid 32-bit integer, returns default_value.
|
|
Int32 Int32FromGTestEnv(const char* flag, Int32 default_value) {
|
|
const String env_var = FlagToEnvVar(flag);
|
|
const char* const string_value = posix::GetEnv(env_var.c_str());
|
|
if (string_value == NULL) {
|
|
// The environment variable is not set.
|
|
return default_value;
|
|
}
|
|
|
|
Int32 result = default_value;
|
|
if (!ParseInt32(Message() << "Environment variable " << env_var,
|
|
string_value, &result)) {
|
|
printf("The default value %s is used.\n",
|
|
(Message() << default_value).GetString().c_str());
|
|
fflush(stdout);
|
|
return default_value;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Reads and returns the string environment variable corresponding to
|
|
// the given flag; if it's not set, returns default_value.
|
|
const char* StringFromGTestEnv(const char* flag, const char* default_value) {
|
|
const String env_var = FlagToEnvVar(flag);
|
|
const char* const value = posix::GetEnv(env_var.c_str());
|
|
return value == NULL ? default_value : value;
|
|
}
|
|
|
|
} // namespace internal
|
|
} // namespace testing
|