Shinichiro Hamaji | 1d545aa | 2015-06-23 15:29:13 +0900 | [diff] [blame] | 1 | // Copyright 2015 Google Inc. All rights reserved |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 15 | // +build ignore |
| 16 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 17 | #include "strutil.h" |
| 18 | |
| 19 | #include <ctype.h> |
Shinichiro Hamaji | 8a96358 | 2015-06-18 07:05:58 +0900 | [diff] [blame] | 20 | #include <limits.h> |
Shinichiro Hamaji | 8a96358 | 2015-06-18 07:05:58 +0900 | [diff] [blame] | 21 | #include <unistd.h> |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 22 | |
Shinichiro Hamaji | c9b0aca | 2015-07-31 16:47:56 +0900 | [diff] [blame] | 23 | #include <algorithm> |
Shinichiro Hamaji | eafd052 | 2015-06-18 16:46:02 +0900 | [diff] [blame] | 24 | #include <stack> |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 25 | #include <utility> |
| 26 | |
Shinichiro Hamaji | 096bb4e | 2016-02-03 13:24:34 +0900 | [diff] [blame] | 27 | #ifdef __SSE4_2__ |
| 28 | #include <smmintrin.h> |
| 29 | #endif |
| 30 | |
Shinichiro Hamaji | 8a96358 | 2015-06-18 07:05:58 +0900 | [diff] [blame] | 31 | #include "log.h" |
| 32 | |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 33 | static bool isSpace(char c) { |
| 34 | return (9 <= c && c <= 13) || c == 32; |
| 35 | } |
| 36 | |
Shinichiro Hamaji | 096bb4e | 2016-02-03 13:24:34 +0900 | [diff] [blame] | 37 | #ifdef __SSE4_2__ |
| 38 | static int SkipUntilSSE42(const char* s, int len, |
| 39 | const char* ranges, int ranges_size) { |
| 40 | __m128i ranges16 = _mm_loadu_si128((const __m128i*)ranges); |
| 41 | int i = 0; |
| 42 | do { |
| 43 | __m128i b16 = _mm_loadu_si128((const __m128i*)(s + i)); |
| 44 | int r = _mm_cmpestri( |
| 45 | ranges16, ranges_size, b16, len - i, |
| 46 | _SIDD_LEAST_SIGNIFICANT | _SIDD_CMP_RANGES | _SIDD_UBYTE_OPS); |
| 47 | if (r != 16) { |
| 48 | return i + r; |
| 49 | } |
| 50 | i += 16; |
| 51 | } while (i < len); |
| 52 | return len; |
| 53 | } |
| 54 | #endif |
| 55 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 56 | WordScanner::Iterator& WordScanner::Iterator::operator++() { |
| 57 | int len = static_cast<int>(in->size()); |
Shinichiro Hamaji | 5d17287 | 2016-02-12 16:21:49 +0900 | [diff] [blame] | 58 | for (s = i + 1; s < len; s++) { |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 59 | if (!isSpace((*in)[s])) |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 60 | break; |
| 61 | } |
Shinichiro Hamaji | 5d17287 | 2016-02-12 16:21:49 +0900 | [diff] [blame] | 62 | if (s >= len) { |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 63 | in = NULL; |
| 64 | s = 0; |
| 65 | i = 0; |
| 66 | return *this; |
| 67 | } |
Shinichiro Hamaji | 096bb4e | 2016-02-03 13:24:34 +0900 | [diff] [blame] | 68 | |
| 69 | #ifdef __SSE4_2__ |
| 70 | static const char ranges[] = "\x09\x0d "; |
| 71 | i = s; |
| 72 | i += SkipUntilSSE42(in->data() + s, len - s, ranges, 4); |
| 73 | #else |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 74 | for (i = s; i < len; i++) { |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 75 | if (isSpace((*in)[i])) |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 76 | break; |
| 77 | } |
Shinichiro Hamaji | 096bb4e | 2016-02-03 13:24:34 +0900 | [diff] [blame] | 78 | #endif |
| 79 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 80 | return *this; |
| 81 | } |
| 82 | |
| 83 | StringPiece WordScanner::Iterator::operator*() const { |
Shinichiro Hamaji | 63e68fc | 2015-06-16 17:36:53 +0900 | [diff] [blame] | 84 | return in->substr(s, i - s); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | WordScanner::WordScanner(StringPiece in) |
| 88 | : in_(in) { |
| 89 | } |
| 90 | |
| 91 | WordScanner::Iterator WordScanner::begin() const { |
| 92 | Iterator iter; |
| 93 | iter.in = &in_; |
| 94 | iter.s = 0; |
Shinichiro Hamaji | 5d17287 | 2016-02-12 16:21:49 +0900 | [diff] [blame] | 95 | iter.i = -1; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 96 | ++iter; |
| 97 | return iter; |
| 98 | } |
| 99 | |
| 100 | WordScanner::Iterator WordScanner::end() const { |
| 101 | Iterator iter; |
| 102 | iter.in = NULL; |
| 103 | iter.s = 0; |
| 104 | iter.i = 0; |
| 105 | return iter; |
| 106 | } |
| 107 | |
Shinichiro Hamaji | d87e59e | 2015-06-17 18:18:34 +0900 | [diff] [blame] | 108 | void WordScanner::Split(vector<StringPiece>* o) { |
| 109 | for (StringPiece t : *this) |
| 110 | o->push_back(t); |
| 111 | } |
| 112 | |
Shinichiro Hamaji | 2e6cbfc | 2015-06-16 18:46:50 +0900 | [diff] [blame] | 113 | WordWriter::WordWriter(string* o) |
| 114 | : out_(o), |
| 115 | needs_space_(false) { |
| 116 | } |
| 117 | |
Shinichiro Hamaji | 37591ce | 2015-06-16 19:36:05 +0900 | [diff] [blame] | 118 | void WordWriter::MaybeAddWhitespace() { |
Shinichiro Hamaji | 5e26e22 | 2015-06-16 19:38:47 +0900 | [diff] [blame] | 119 | if (needs_space_) { |
Shinichiro Hamaji | 2e6cbfc | 2015-06-16 18:46:50 +0900 | [diff] [blame] | 120 | out_->push_back(' '); |
| 121 | } else { |
| 122 | needs_space_ = true; |
| 123 | } |
Shinichiro Hamaji | 37591ce | 2015-06-16 19:36:05 +0900 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | void WordWriter::Write(StringPiece s) { |
| 127 | MaybeAddWhitespace(); |
Shinichiro Hamaji | 2e6cbfc | 2015-06-16 18:46:50 +0900 | [diff] [blame] | 128 | AppendString(s, out_); |
| 129 | } |
| 130 | |
Shinichiro Hamaji | 8f68bd3 | 2015-06-18 11:01:51 +0900 | [diff] [blame] | 131 | ScopedTerminator::ScopedTerminator(StringPiece s) |
| 132 | : s_(s), c_(s[s.size()]) { |
| 133 | const_cast<char*>(s_.data())[s_.size()] = '\0'; |
| 134 | } |
| 135 | |
| 136 | ScopedTerminator::~ScopedTerminator() { |
| 137 | const_cast<char*>(s_.data())[s_.size()] = c_; |
| 138 | } |
| 139 | |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 140 | void AppendString(StringPiece str, string* out) { |
| 141 | out->append(str.begin(), str.end()); |
| 142 | } |
| 143 | |
| 144 | bool HasPrefix(StringPiece str, StringPiece prefix) { |
| 145 | ssize_t size_diff = str.size() - prefix.size(); |
Shinichiro Hamaji | f91d682 | 2015-06-16 17:51:23 +0900 | [diff] [blame] | 146 | return size_diff >= 0 && str.substr(0, prefix.size()) == prefix; |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | bool HasSuffix(StringPiece str, StringPiece suffix) { |
| 150 | ssize_t size_diff = str.size() - suffix.size(); |
| 151 | return size_diff >= 0 && str.substr(size_diff) == suffix; |
| 152 | } |
| 153 | |
Shinichiro Hamaji | c9b0aca | 2015-07-31 16:47:56 +0900 | [diff] [blame] | 154 | bool HasWord(StringPiece str, StringPiece w) { |
| 155 | size_t found = str.find(w); |
| 156 | if (found == string::npos) |
| 157 | return false; |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 158 | if (found != 0 && !isSpace(str[found-1])) |
Shinichiro Hamaji | c9b0aca | 2015-07-31 16:47:56 +0900 | [diff] [blame] | 159 | return false; |
| 160 | size_t end = found + w.size(); |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 161 | if (end != str.size() && !isSpace(str[end])) |
Shinichiro Hamaji | c9b0aca | 2015-07-31 16:47:56 +0900 | [diff] [blame] | 162 | return false; |
| 163 | return true; |
| 164 | } |
| 165 | |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 166 | StringPiece TrimSuffix(StringPiece str, StringPiece suffix) { |
| 167 | ssize_t size_diff = str.size() - suffix.size(); |
| 168 | if (size_diff < 0 || str.substr(size_diff) != suffix) |
| 169 | return str; |
| 170 | return str.substr(0, size_diff); |
| 171 | } |
| 172 | |
Shinichiro Hamaji | a6a17a4 | 2015-06-18 20:11:19 +0900 | [diff] [blame] | 173 | Pattern::Pattern(StringPiece pat) |
| 174 | : pat_(pat), percent_index_(pat.find('%')) { |
| 175 | } |
| 176 | |
| 177 | bool Pattern::Match(StringPiece str) const { |
| 178 | if (percent_index_ == string::npos) |
| 179 | return str == pat_; |
| 180 | return MatchImpl(str); |
| 181 | } |
| 182 | |
| 183 | bool Pattern::MatchImpl(StringPiece str) const { |
| 184 | return (HasPrefix(str, pat_.substr(0, percent_index_)) && |
| 185 | HasSuffix(str, pat_.substr(percent_index_ + 1))); |
| 186 | } |
| 187 | |
Shinichiro Hamaji | a7984ad | 2015-09-11 16:33:16 +0900 | [diff] [blame] | 188 | StringPiece Pattern::Stem(StringPiece str) const { |
| 189 | if (!Match(str)) |
| 190 | return ""; |
| 191 | return str.substr(percent_index_, |
| 192 | str.size() - (pat_.size() - percent_index_ - 1)); |
| 193 | } |
| 194 | |
Shinichiro Hamaji | a6a17a4 | 2015-06-18 20:11:19 +0900 | [diff] [blame] | 195 | void Pattern::AppendSubst(StringPiece str, StringPiece subst, |
| 196 | string* out) const { |
| 197 | if (percent_index_ == string::npos) { |
| 198 | if (str == pat_) { |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 199 | AppendString(subst, out); |
| 200 | return; |
| 201 | } else { |
| 202 | AppendString(str, out); |
| 203 | return; |
| 204 | } |
| 205 | } |
| 206 | |
Shinichiro Hamaji | a6a17a4 | 2015-06-18 20:11:19 +0900 | [diff] [blame] | 207 | if (MatchImpl(str)) { |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 208 | size_t subst_percent_index = subst.find('%'); |
| 209 | if (subst_percent_index == string::npos) { |
| 210 | AppendString(subst, out); |
| 211 | return; |
| 212 | } else { |
| 213 | AppendString(subst.substr(0, subst_percent_index), out); |
Shinichiro Hamaji | a6a17a4 | 2015-06-18 20:11:19 +0900 | [diff] [blame] | 214 | AppendString(str.substr(percent_index_, |
| 215 | str.size() - pat_.size() + 1), out); |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 216 | AppendString(subst.substr(subst_percent_index + 1), out); |
| 217 | return; |
| 218 | } |
| 219 | } |
| 220 | AppendString(str, out); |
| 221 | } |
| 222 | |
Shinichiro Hamaji | a6a17a4 | 2015-06-18 20:11:19 +0900 | [diff] [blame] | 223 | void Pattern::AppendSubstRef(StringPiece str, StringPiece subst, |
| 224 | string* out) const { |
| 225 | if (percent_index_ != string::npos && subst.find('%') != string::npos) { |
| 226 | AppendSubst(str, subst, out); |
Shinichiro Hamaji | f91d682 | 2015-06-16 17:51:23 +0900 | [diff] [blame] | 227 | return; |
| 228 | } |
Shinichiro Hamaji | a6a17a4 | 2015-06-18 20:11:19 +0900 | [diff] [blame] | 229 | StringPiece s = TrimSuffix(str, pat_); |
Shinichiro Hamaji | 02fc55b | 2015-06-16 17:19:07 +0900 | [diff] [blame] | 230 | out->append(s.begin(), s.end()); |
| 231 | out->append(subst.begin(), subst.end()); |
| 232 | } |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 233 | |
| 234 | string NoLineBreak(const string& s) { |
| 235 | size_t index = s.find('\n'); |
| 236 | if (index == string::npos) |
| 237 | return s; |
| 238 | string r = s; |
| 239 | while (index != string::npos) { |
Shinichiro Hamaji | 2b674c4 | 2015-06-24 17:49:35 +0900 | [diff] [blame] | 240 | r = r.substr(0, index) + "\\n" + r.substr(index + 1); |
| 241 | index = r.find('\n', index + 2); |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 242 | } |
| 243 | return r; |
| 244 | } |
Shinichiro Hamaji | 3275062 | 2015-06-17 14:57:33 +0900 | [diff] [blame] | 245 | |
| 246 | StringPiece TrimLeftSpace(StringPiece s) { |
| 247 | size_t i = 0; |
Shinichiro Hamaji | 47898a8 | 2015-06-19 16:45:33 +0900 | [diff] [blame] | 248 | for (; i < s.size(); i++) { |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 249 | if (isSpace(s[i])) |
Shinichiro Hamaji | 47898a8 | 2015-06-19 16:45:33 +0900 | [diff] [blame] | 250 | continue; |
| 251 | char n = s.get(i+1); |
| 252 | if (s[i] == '\\' && (n == '\r' || n == '\n')) { |
| 253 | i++; |
| 254 | continue; |
| 255 | } |
| 256 | break; |
| 257 | } |
Shinichiro Hamaji | 3275062 | 2015-06-17 14:57:33 +0900 | [diff] [blame] | 258 | return s.substr(i, s.size() - i); |
| 259 | } |
| 260 | |
| 261 | StringPiece TrimRightSpace(StringPiece s) { |
| 262 | size_t i = 0; |
Shinichiro Hamaji | 47898a8 | 2015-06-19 16:45:33 +0900 | [diff] [blame] | 263 | for (; i < s.size(); i++) { |
| 264 | char c = s[s.size() - 1 - i]; |
Shinichiro Hamaji | 9e6e930 | 2016-02-02 18:07:36 +0900 | [diff] [blame] | 265 | if (isSpace(c)) { |
Shinichiro Hamaji | 47898a8 | 2015-06-19 16:45:33 +0900 | [diff] [blame] | 266 | if ((c == '\r' || c == '\n') && s.get(s.size() - 2 - i) == '\\') |
| 267 | i++; |
| 268 | continue; |
| 269 | } |
| 270 | break; |
| 271 | } |
Shinichiro Hamaji | 3275062 | 2015-06-17 14:57:33 +0900 | [diff] [blame] | 272 | return s.substr(0, s.size() - i); |
| 273 | } |
| 274 | |
| 275 | StringPiece TrimSpace(StringPiece s) { |
| 276 | return TrimRightSpace(TrimLeftSpace(s)); |
| 277 | } |
Shinichiro Hamaji | 67f9a70 | 2015-06-18 06:00:57 +0900 | [diff] [blame] | 278 | |
| 279 | StringPiece Dirname(StringPiece s) { |
| 280 | size_t found = s.rfind('/'); |
| 281 | if (found == string::npos) |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 282 | return StringPiece("."); |
Shinichiro Hamaji | 67f9a70 | 2015-06-18 06:00:57 +0900 | [diff] [blame] | 283 | if (found == 0) |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 284 | return StringPiece(""); |
Shinichiro Hamaji | 67f9a70 | 2015-06-18 06:00:57 +0900 | [diff] [blame] | 285 | return s.substr(0, found); |
| 286 | } |
| 287 | |
| 288 | StringPiece Basename(StringPiece s) { |
| 289 | size_t found = s.rfind('/'); |
| 290 | if (found == string::npos || found == 0) |
| 291 | return s; |
| 292 | return s.substr(found + 1); |
| 293 | } |
| 294 | |
| 295 | StringPiece GetExt(StringPiece s) { |
| 296 | size_t found = s.rfind('.'); |
| 297 | if (found == string::npos) |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 298 | return StringPiece(""); |
Shinichiro Hamaji | 67f9a70 | 2015-06-18 06:00:57 +0900 | [diff] [blame] | 299 | return s.substr(found); |
| 300 | } |
| 301 | |
| 302 | StringPiece StripExt(StringPiece s) { |
| 303 | size_t slash_index = s.rfind('/'); |
| 304 | size_t found = s.rfind('.'); |
| 305 | if (found == string::npos || |
| 306 | (slash_index != string::npos && found < slash_index)) |
| 307 | return s; |
| 308 | return s.substr(0, found); |
| 309 | } |
Shinichiro Hamaji | 8a96358 | 2015-06-18 07:05:58 +0900 | [diff] [blame] | 310 | |
Shinichiro Hamaji | b3591ed | 2015-08-10 20:06:50 +0900 | [diff] [blame] | 311 | void NormalizePath(string* o) { |
| 312 | if (o->empty()) |
| 313 | return; |
| 314 | size_t start_index = 0; |
| 315 | if ((*o)[0] == '/') |
| 316 | start_index++; |
Shinichiro Hamaji | 5f57a99 | 2015-06-30 19:39:39 +0900 | [diff] [blame] | 317 | size_t j = start_index; |
| 318 | size_t prev_start = start_index; |
| 319 | for (size_t i = start_index; i <= o->size(); i++) { |
| 320 | char c = (*o)[i]; |
| 321 | if (c != '/' && c != 0) { |
| 322 | (*o)[j] = c; |
| 323 | j++; |
| 324 | continue; |
| 325 | } |
| 326 | |
| 327 | StringPiece prev_dir = StringPiece(o->data() + prev_start, j - prev_start); |
| 328 | if (prev_dir == ".") { |
| 329 | j--; |
Shinichiro Hamaji | b3591ed | 2015-08-10 20:06:50 +0900 | [diff] [blame] | 330 | } else if (prev_dir == ".." && j != 2 /* .. */) { |
| 331 | if (j == 3) { |
| 332 | // /.. |
Shinichiro Hamaji | 5f57a99 | 2015-06-30 19:39:39 +0900 | [diff] [blame] | 333 | j = start_index; |
| 334 | } else { |
Shinichiro Hamaji | 14ea0f1 | 2015-10-13 17:04:34 +0900 | [diff] [blame] | 335 | size_t orig_j = j; |
Shinichiro Hamaji | b3591ed | 2015-08-10 20:06:50 +0900 | [diff] [blame] | 336 | j -= 4; |
| 337 | j = o->rfind('/', j); |
| 338 | if (j == string::npos) { |
| 339 | j = start_index; |
| 340 | } else { |
| 341 | j++; |
| 342 | } |
Shinichiro Hamaji | 14ea0f1 | 2015-10-13 17:04:34 +0900 | [diff] [blame] | 343 | if (StringPiece(o->data() + j, 3) == "../") { |
| 344 | j = orig_j; |
| 345 | (*o)[j] = c; |
| 346 | j++; |
| 347 | } |
Shinichiro Hamaji | 5f57a99 | 2015-06-30 19:39:39 +0900 | [diff] [blame] | 348 | } |
| 349 | } else if (!prev_dir.empty()) { |
| 350 | if (c) { |
| 351 | (*o)[j] = c; |
| 352 | j++; |
| 353 | } |
| 354 | } |
| 355 | prev_start = j; |
| 356 | } |
| 357 | if (j > 1 && (*o)[j-1] == '/') |
| 358 | j--; |
| 359 | o->resize(j); |
| 360 | } |
| 361 | |
Shinichiro Hamaji | 8a96358 | 2015-06-18 07:05:58 +0900 | [diff] [blame] | 362 | void AbsPath(StringPiece s, string* o) { |
| 363 | if (s.get(0) == '/') { |
| 364 | o->clear(); |
| 365 | } else { |
| 366 | char buf[PATH_MAX]; |
| 367 | if (!getcwd(buf, PATH_MAX)) { |
| 368 | fprintf(stderr, "getcwd failed\n"); |
| 369 | CHECK(false); |
| 370 | } |
| 371 | |
| 372 | CHECK(buf[0] == '/'); |
| 373 | *o = buf; |
| 374 | *o += '/'; |
| 375 | } |
| 376 | AppendString(s, o); |
Shinichiro Hamaji | b3591ed | 2015-08-10 20:06:50 +0900 | [diff] [blame] | 377 | NormalizePath(o); |
Shinichiro Hamaji | 8a96358 | 2015-06-18 07:05:58 +0900 | [diff] [blame] | 378 | } |
Shinichiro Hamaji | eafd052 | 2015-06-18 16:46:02 +0900 | [diff] [blame] | 379 | |
| 380 | template<typename Cond> |
| 381 | size_t FindOutsideParenImpl(StringPiece s, Cond cond) { |
| 382 | bool prev_backslash = false; |
| 383 | stack<char> paren_stack; |
| 384 | for (size_t i = 0; i < s.size(); i++) { |
| 385 | char c = s[i]; |
| 386 | if (cond(c) && paren_stack.empty() && !prev_backslash) { |
| 387 | return i; |
| 388 | } |
| 389 | switch (c) { |
| 390 | case '(': |
| 391 | paren_stack.push(')'); |
| 392 | break; |
| 393 | case '{': |
| 394 | paren_stack.push('}'); |
| 395 | break; |
| 396 | |
| 397 | case ')': |
| 398 | case '}': |
| 399 | if (!paren_stack.empty() && c == paren_stack.top()) { |
| 400 | paren_stack.pop(); |
| 401 | } |
| 402 | break; |
| 403 | } |
| 404 | prev_backslash = c == '\\' && !prev_backslash; |
| 405 | } |
| 406 | return string::npos; |
| 407 | } |
| 408 | |
| 409 | size_t FindOutsideParen(StringPiece s, char c) { |
| 410 | return FindOutsideParenImpl(s, [&c](char d){return c == d;}); |
| 411 | } |
| 412 | |
Shinichiro Hamaji | 76ff983 | 2015-06-18 17:11:22 +0900 | [diff] [blame] | 413 | size_t FindTwoOutsideParen(StringPiece s, char c1, char c2) { |
| 414 | return FindOutsideParenImpl(s, [&c1, &c2](char d){ |
| 415 | return d == c1 || d == c2; |
| 416 | }); |
Shinichiro Hamaji | eafd052 | 2015-06-18 16:46:02 +0900 | [diff] [blame] | 417 | } |
Shinichiro Hamaji | 14bb279 | 2015-06-25 18:24:11 +0900 | [diff] [blame] | 418 | |
Shinichiro Hamaji | 415a9b1 | 2015-07-05 14:33:02 +0900 | [diff] [blame] | 419 | size_t FindThreeOutsideParen(StringPiece s, char c1, char c2, char c3) { |
| 420 | return FindOutsideParenImpl(s, [&c1, &c2, &c3](char d){ |
| 421 | return d == c1 || d == c2 || d == c3; |
| 422 | }); |
| 423 | } |
| 424 | |
Shinichiro Hamaji | 14bb279 | 2015-06-25 18:24:11 +0900 | [diff] [blame] | 425 | size_t FindEndOfLine(StringPiece s, size_t e, size_t* lf_cnt) { |
Shinichiro Hamaji | ad21a45 | 2016-02-17 17:32:20 +0900 | [diff] [blame] | 426 | #ifdef __SSE4_2__ |
| 427 | static const char ranges[] = "\n\n\\\\"; |
| 428 | while (e < s.size()) { |
| 429 | e += SkipUntilSSE42(s.data() + e, s.size() - e, ranges, 4); |
| 430 | char c = s[e]; |
| 431 | if (c == '\\') { |
| 432 | if (s[e+1] == '\n') { |
| 433 | e += 2; |
| 434 | ++*lf_cnt; |
| 435 | } else if (s[e+1] == '\r' && s[e+2] == '\n') { |
| 436 | e += 3; |
| 437 | ++*lf_cnt; |
| 438 | } else if (s[e+1] == '\\') { |
| 439 | e += 2; |
| 440 | } else { |
| 441 | e++; |
| 442 | } |
| 443 | } else if (c == '\n') { |
| 444 | ++*lf_cnt; |
| 445 | return e; |
| 446 | } |
| 447 | } |
| 448 | return e; |
| 449 | #else |
Shinichiro Hamaji | 14bb279 | 2015-06-25 18:24:11 +0900 | [diff] [blame] | 450 | bool prev_backslash = false; |
| 451 | for (; e < s.size(); e++) { |
| 452 | char c = s[e]; |
| 453 | if (c == '\\') { |
| 454 | prev_backslash = !prev_backslash; |
| 455 | } else if (c == '\n') { |
| 456 | ++*lf_cnt; |
| 457 | if (!prev_backslash) { |
| 458 | return e; |
| 459 | } |
Shinichiro Hamaji | 0f9cd97 | 2015-06-26 08:20:45 +0900 | [diff] [blame] | 460 | prev_backslash = false; |
Shinichiro Hamaji | 14bb279 | 2015-06-25 18:24:11 +0900 | [diff] [blame] | 461 | } else if (c != '\r') { |
| 462 | prev_backslash = false; |
| 463 | } |
| 464 | } |
| 465 | return e; |
Shinichiro Hamaji | ad21a45 | 2016-02-17 17:32:20 +0900 | [diff] [blame] | 466 | #endif |
Shinichiro Hamaji | 14bb279 | 2015-06-25 18:24:11 +0900 | [diff] [blame] | 467 | } |
Shinichiro Hamaji | d953332 | 2015-06-27 05:48:38 +0900 | [diff] [blame] | 468 | |
| 469 | StringPiece TrimLeadingCurdir(StringPiece s) { |
| 470 | while (s.substr(0, 2) == "./") |
| 471 | s = s.substr(2); |
| 472 | return s; |
| 473 | } |
Shinichiro Hamaji | c9b0aca | 2015-07-31 16:47:56 +0900 | [diff] [blame] | 474 | |
| 475 | void FormatForCommandSubstitution(string* s) { |
| 476 | while ((*s)[s->size()-1] == '\n') |
| 477 | s->pop_back(); |
| 478 | for (size_t i = 0; i < s->size(); i++) { |
| 479 | if ((*s)[i] == '\n') |
| 480 | (*s)[i] = ' '; |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | string SortWordsInString(StringPiece s) { |
| 485 | vector<string> toks; |
| 486 | for (StringPiece tok : WordScanner(s)) { |
| 487 | toks.push_back(tok.as_string()); |
| 488 | } |
| 489 | sort(toks.begin(), toks.end()); |
| 490 | return JoinStrings(toks, " "); |
| 491 | } |
Shinichiro Hamaji | 5a71a8b | 2015-08-06 19:23:18 +0900 | [diff] [blame] | 492 | |
| 493 | string ConcatDir(StringPiece b, StringPiece n) { |
| 494 | string r; |
| 495 | if (!b.empty()) { |
| 496 | b.AppendToString(&r); |
| 497 | r += '/'; |
| 498 | } |
| 499 | n.AppendToString(&r); |
| 500 | NormalizePath(&r); |
| 501 | return r; |
| 502 | } |
Dan Willemsen | e6f6858 | 2015-08-21 11:13:28 -0700 | [diff] [blame] | 503 | |
| 504 | string EchoEscape(const string str) { |
| 505 | const char *in = str.c_str(); |
| 506 | string buf; |
| 507 | for (; *in; in++) { |
| 508 | switch(*in) { |
| 509 | case '\\': |
| 510 | buf += "\\\\\\\\"; |
| 511 | break; |
| 512 | case '\n': |
| 513 | buf += "\\n"; |
| 514 | break; |
| 515 | case '"': |
| 516 | buf += "\\\""; |
| 517 | break; |
| 518 | default: |
| 519 | buf += *in; |
| 520 | } |
| 521 | } |
| 522 | return buf; |
| 523 | } |
Shinichiro Hamaji | 348a960 | 2016-02-18 17:20:08 +0900 | [diff] [blame] | 524 | |
| 525 | void EscapeShell(string* s) { |
Shinichiro Hamaji | a67fba3 | 2016-02-22 15:21:43 +0900 | [diff] [blame^] | 526 | #ifdef __SSE4_2__ |
| 527 | static const char ranges[] = "\0\0\n\n\"\"$$\\\\``"; |
| 528 | size_t prev = 0; |
| 529 | size_t i = SkipUntilSSE42(s->c_str(), s->size(), ranges, 12); |
| 530 | if (i == s->size()) |
| 531 | return; |
| 532 | |
| 533 | string r; |
| 534 | for (; i < s->size();) { |
| 535 | StringPiece(*s).substr(prev, i - prev).AppendToString(&r); |
| 536 | char c = (*s)[i]; |
| 537 | r += '\\'; |
| 538 | if (c == '$') { |
| 539 | if ((*s)[i+1] == '$') { |
| 540 | r += '$'; |
| 541 | i++; |
| 542 | } |
| 543 | } |
| 544 | r += c; |
| 545 | i++; |
| 546 | prev = i; |
| 547 | i += SkipUntilSSE42(s->c_str() + i, s->size() - i, ranges, 12); |
| 548 | } |
| 549 | StringPiece(*s).substr(prev).AppendToString(&r); |
| 550 | s->swap(r); |
| 551 | #else |
Shinichiro Hamaji | 348a960 | 2016-02-18 17:20:08 +0900 | [diff] [blame] | 552 | if (s->find_first_of("$`\\\"") == string::npos) |
| 553 | return; |
| 554 | string r; |
| 555 | bool last_dollar = false; |
| 556 | for (char c : *s) { |
| 557 | switch (c) { |
| 558 | case '$': |
| 559 | if (last_dollar) { |
| 560 | r += c; |
| 561 | last_dollar = false; |
| 562 | } else { |
| 563 | r += '\\'; |
| 564 | r += c; |
| 565 | last_dollar = true; |
| 566 | } |
| 567 | break; |
| 568 | case '`': |
| 569 | case '"': |
| 570 | case '\\': |
| 571 | r += '\\'; |
| 572 | // fall through. |
| 573 | default: |
| 574 | r += c; |
| 575 | last_dollar = false; |
| 576 | } |
| 577 | } |
| 578 | s->swap(r); |
Shinichiro Hamaji | a67fba3 | 2016-02-22 15:21:43 +0900 | [diff] [blame^] | 579 | #endif |
Shinichiro Hamaji | 348a960 | 2016-02-18 17:20:08 +0900 | [diff] [blame] | 580 | } |