Shinichiro Hamaji | b69bf8a | 2015-06-10 14:52:06 +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 | package kati |
Shinichiro Hamaji | 0493261 | 2015-03-31 23:46:56 +0900 | [diff] [blame] | 16 | |
| 17 | import ( |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 18 | "bytes" |
Shinichiro Hamaji | 5e2c3c7 | 2015-04-03 15:04:54 +0900 | [diff] [blame] | 19 | "path/filepath" |
Shinichiro Hamaji | 0493261 | 2015-03-31 23:46:56 +0900 | [diff] [blame] | 20 | "strings" |
| 21 | ) |
| 22 | |
Fumitoshi Ukai | 9ae81d0 | 2015-06-08 09:32:38 +0900 | [diff] [blame] | 23 | var wsbytes = [256]bool{' ': true, '\t': true, '\n': true, '\r': true} |
| 24 | |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 25 | // TODO(ukai): use unicode.IsSpace? |
| 26 | func isWhitespace(ch rune) bool { |
Fumitoshi Ukai | 9ae81d0 | 2015-06-08 09:32:38 +0900 | [diff] [blame] | 27 | if int(ch) >= len(wsbytes) { |
| 28 | return false |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 29 | } |
Fumitoshi Ukai | 9ae81d0 | 2015-06-08 09:32:38 +0900 | [diff] [blame] | 30 | return wsbytes[ch] |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 31 | } |
| 32 | |
Shinichiro Hamaji | 0493261 | 2015-03-31 23:46:56 +0900 | [diff] [blame] | 33 | func splitSpaces(s string) []string { |
Shinichiro Hamaji | 248e754 | 2015-04-09 18:12:06 +0900 | [diff] [blame] | 34 | var r []string |
| 35 | tokStart := -1 |
| 36 | for i, ch := range s { |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 37 | if isWhitespace(ch) { |
Shinichiro Hamaji | 248e754 | 2015-04-09 18:12:06 +0900 | [diff] [blame] | 38 | if tokStart >= 0 { |
| 39 | r = append(r, s[tokStart:i]) |
| 40 | tokStart = -1 |
| 41 | } |
| 42 | } else { |
| 43 | if tokStart < 0 { |
| 44 | tokStart = i |
| 45 | } |
| 46 | } |
Shinichiro Hamaji | 0493261 | 2015-03-31 23:46:56 +0900 | [diff] [blame] | 47 | } |
Shinichiro Hamaji | 248e754 | 2015-04-09 18:12:06 +0900 | [diff] [blame] | 48 | if tokStart >= 0 { |
| 49 | r = append(r, s[tokStart:]) |
| 50 | } |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 51 | logf("splitSpace(%q)=%q", s, r) |
Shinichiro Hamaji | 248e754 | 2015-04-09 18:12:06 +0900 | [diff] [blame] | 52 | return r |
Shinichiro Hamaji | 0493261 | 2015-03-31 23:46:56 +0900 | [diff] [blame] | 53 | } |
Shinichiro Hamaji | c5686fd | 2015-04-01 03:30:34 +0900 | [diff] [blame] | 54 | |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 55 | func splitSpacesBytes(s []byte) (r [][]byte) { |
| 56 | tokStart := -1 |
| 57 | for i, ch := range s { |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 58 | if isWhitespace(rune(ch)) { |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 59 | if tokStart >= 0 { |
| 60 | r = append(r, s[tokStart:i]) |
| 61 | tokStart = -1 |
| 62 | } |
| 63 | } else { |
| 64 | if tokStart < 0 { |
| 65 | tokStart = i |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | if tokStart >= 0 { |
| 70 | r = append(r, s[tokStart:]) |
| 71 | } |
Fumitoshi Ukai | 07cf121 | 2015-06-25 17:16:25 +0900 | [diff] [blame] | 72 | logf("splitSpace(%q)=%q", s, r) |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 73 | return r |
| 74 | } |
| 75 | |
Fumitoshi Ukai | 9da19f6 | 2015-05-08 14:39:08 +0900 | [diff] [blame] | 76 | // TODO(ukai): use bufio.Scanner? |
| 77 | type wordScanner struct { |
| 78 | in []byte |
| 79 | s int // word starts |
| 80 | i int // current pos |
| 81 | } |
| 82 | |
| 83 | func newWordScanner(in []byte) *wordScanner { |
| 84 | return &wordScanner{ |
| 85 | in: in, |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | func (ws *wordScanner) Scan() bool { |
| 90 | for ws.s = ws.i; ws.s < len(ws.in); ws.s++ { |
Fumitoshi Ukai | 9ae81d0 | 2015-06-08 09:32:38 +0900 | [diff] [blame] | 91 | if !wsbytes[ws.in[ws.s]] { |
Fumitoshi Ukai | 9da19f6 | 2015-05-08 14:39:08 +0900 | [diff] [blame] | 92 | break |
| 93 | } |
| 94 | } |
| 95 | if ws.s == len(ws.in) { |
| 96 | return false |
| 97 | } |
| 98 | for ws.i = ws.s; ws.i < len(ws.in); ws.i++ { |
Fumitoshi Ukai | 9ae81d0 | 2015-06-08 09:32:38 +0900 | [diff] [blame] | 99 | if wsbytes[ws.in[ws.i]] { |
Fumitoshi Ukai | 9da19f6 | 2015-05-08 14:39:08 +0900 | [diff] [blame] | 100 | break |
| 101 | } |
| 102 | } |
| 103 | return true |
| 104 | } |
| 105 | |
| 106 | func (ws *wordScanner) Bytes() []byte { |
| 107 | return ws.in[ws.s:ws.i] |
| 108 | } |
| 109 | |
Fumitoshi Ukai | 0822c41 | 2015-04-05 22:51:18 +0900 | [diff] [blame] | 110 | func matchPattern(pat, str string) bool { |
Shinichiro Hamaji | 3796d1e | 2015-04-12 01:59:15 +0900 | [diff] [blame] | 111 | i := strings.IndexByte(pat, '%') |
| 112 | if i < 0 { |
Shinichiro Hamaji | 9b7d462 | 2015-04-02 01:37:04 +0900 | [diff] [blame] | 113 | return pat == str |
| 114 | } |
Shinichiro Hamaji | 3796d1e | 2015-04-12 01:59:15 +0900 | [diff] [blame] | 115 | return strings.HasPrefix(str, pat[:i]) && strings.HasSuffix(str, pat[i+1:]) |
Shinichiro Hamaji | 9b7d462 | 2015-04-02 01:37:04 +0900 | [diff] [blame] | 116 | } |
| 117 | |
Shinichiro Hamaji | 05b222d | 2015-04-11 11:36:37 +0900 | [diff] [blame] | 118 | func matchPatternBytes(pat, str []byte) bool { |
Shinichiro Hamaji | 3796d1e | 2015-04-12 01:59:15 +0900 | [diff] [blame] | 119 | i := bytes.IndexByte(pat, '%') |
| 120 | if i < 0 { |
Shinichiro Hamaji | 05b222d | 2015-04-11 11:36:37 +0900 | [diff] [blame] | 121 | return bytes.Equal(pat, str) |
| 122 | } |
Shinichiro Hamaji | 3796d1e | 2015-04-12 01:59:15 +0900 | [diff] [blame] | 123 | return bytes.HasPrefix(str, pat[:i]) && bytes.HasSuffix(str, pat[i+1:]) |
Shinichiro Hamaji | 05b222d | 2015-04-11 11:36:37 +0900 | [diff] [blame] | 124 | } |
| 125 | |
Fumitoshi Ukai | 0822c41 | 2015-04-05 22:51:18 +0900 | [diff] [blame] | 126 | func substPattern(pat, repl, str string) string { |
Fumitoshi Ukai | c3fe5f6 | 2015-04-02 13:19:07 +0900 | [diff] [blame] | 127 | ps := strings.SplitN(pat, "%", 2) |
| 128 | if len(ps) != 2 { |
Shinichiro Hamaji | c5686fd | 2015-04-01 03:30:34 +0900 | [diff] [blame] | 129 | if str == pat { |
| 130 | return repl |
Fumitoshi Ukai | c3fe5f6 | 2015-04-02 13:19:07 +0900 | [diff] [blame] | 131 | } |
| 132 | return str |
| 133 | } |
| 134 | in := str |
| 135 | trimed := str |
| 136 | if ps[0] != "" { |
| 137 | trimed = strings.TrimPrefix(in, ps[0]) |
| 138 | if trimed == in { |
| 139 | return str |
| 140 | } |
| 141 | } |
| 142 | in = trimed |
| 143 | if ps[1] != "" { |
| 144 | trimed = strings.TrimSuffix(in, ps[1]) |
| 145 | if trimed == in { |
Shinichiro Hamaji | c5686fd | 2015-04-01 03:30:34 +0900 | [diff] [blame] | 146 | return str |
| 147 | } |
| 148 | } |
| 149 | |
Fumitoshi Ukai | c3fe5f6 | 2015-04-02 13:19:07 +0900 | [diff] [blame] | 150 | rs := strings.SplitN(repl, "%", 2) |
| 151 | if len(rs) != 2 { |
| 152 | return repl |
Shinichiro Hamaji | c5686fd | 2015-04-01 03:30:34 +0900 | [diff] [blame] | 153 | } |
Fumitoshi Ukai | c3fe5f6 | 2015-04-02 13:19:07 +0900 | [diff] [blame] | 154 | return rs[0] + trimed + rs[1] |
Shinichiro Hamaji | c5686fd | 2015-04-01 03:30:34 +0900 | [diff] [blame] | 155 | } |
Shinichiro Hamaji | 5e2c3c7 | 2015-04-03 15:04:54 +0900 | [diff] [blame] | 156 | |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 157 | func substPatternBytes(pat, repl, str []byte) (pre, subst, post []byte) { |
| 158 | i := bytes.IndexByte(pat, '%') |
| 159 | if i < 0 { |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 160 | if bytes.Equal(str, pat) { |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 161 | return repl, nil, nil |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 162 | } |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 163 | return str, nil, nil |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 164 | } |
| 165 | in := str |
| 166 | trimed := str |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 167 | if i > 0 { |
| 168 | trimed = bytes.TrimPrefix(in, pat[:i]) |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 169 | if bytes.Equal(trimed, in) { |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 170 | return str, nil, nil |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 171 | } |
| 172 | } |
| 173 | in = trimed |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 174 | if i < len(pat)-1 { |
| 175 | trimed = bytes.TrimSuffix(in, pat[i+1:]) |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 176 | if bytes.Equal(trimed, in) { |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 177 | return str, nil, nil |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 178 | } |
| 179 | } |
| 180 | |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 181 | i = bytes.IndexByte(repl, '%') |
| 182 | if i < 0 { |
| 183 | return repl, nil, nil |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 184 | } |
| 185 | |
Fumitoshi Ukai | 77411fb | 2015-06-19 15:46:21 +0900 | [diff] [blame] | 186 | return repl[:i], trimed, repl[i+1:] |
Shinichiro Hamaji | 98e910d | 2015-04-11 10:38:44 +0900 | [diff] [blame] | 187 | } |
| 188 | |
Fumitoshi Ukai | 0822c41 | 2015-04-05 22:51:18 +0900 | [diff] [blame] | 189 | func substRef(pat, repl, str string) string { |
| 190 | if strings.IndexByte(pat, '%') >= 0 && strings.IndexByte(repl, '%') >= 0 { |
| 191 | return substPattern(pat, repl, str) |
| 192 | } |
| 193 | str = strings.TrimSuffix(str, pat) |
| 194 | return str + repl |
| 195 | } |
| 196 | |
Shinichiro Hamaji | 5e2c3c7 | 2015-04-03 15:04:54 +0900 | [diff] [blame] | 197 | func stripExt(s string) string { |
| 198 | suf := filepath.Ext(s) |
| 199 | return s[:len(s)-len(suf)] |
| 200 | } |
Shinichiro Hamaji | c88618f | 2015-04-11 19:58:06 +0900 | [diff] [blame] | 201 | |
| 202 | func trimLeftSpace(s string) string { |
| 203 | for i, ch := range s { |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 204 | if !isWhitespace(ch) { |
Shinichiro Hamaji | c88618f | 2015-04-11 19:58:06 +0900 | [diff] [blame] | 205 | return s[i:] |
| 206 | } |
| 207 | } |
| 208 | return "" |
| 209 | } |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 210 | |
| 211 | func trimLeftSpaceBytes(s []byte) []byte { |
| 212 | for i, ch := range s { |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 213 | if !isWhitespace(rune(ch)) { |
Shinichiro Hamaji | c4c9810 | 2015-04-12 03:56:00 +0900 | [diff] [blame] | 214 | return s[i:] |
| 215 | } |
| 216 | } |
| 217 | return nil |
| 218 | } |
Shinichiro Hamaji | dad8053 | 2015-04-21 17:55:50 +0900 | [diff] [blame] | 219 | |
Fumitoshi Ukai | 0b9e813 | 2015-04-30 10:20:18 +0900 | [diff] [blame] | 220 | func trimRightSpaceBytes(s []byte) []byte { |
| 221 | for i := len(s) - 1; i >= 0; i-- { |
| 222 | ch := s[i] |
Fumitoshi Ukai | b06cd9d | 2015-05-07 12:56:12 +0900 | [diff] [blame] | 223 | if !isWhitespace(rune(ch)) { |
Fumitoshi Ukai | 0b9e813 | 2015-04-30 10:20:18 +0900 | [diff] [blame] | 224 | return s[:i+1] |
| 225 | } |
| 226 | } |
| 227 | return nil |
| 228 | } |
| 229 | |
| 230 | func trimSpaceBytes(s []byte) []byte { |
| 231 | s = trimLeftSpaceBytes(s) |
| 232 | return trimRightSpaceBytes(s) |
| 233 | } |
| 234 | |
Shinichiro Hamaji | dad8053 | 2015-04-21 17:55:50 +0900 | [diff] [blame] | 235 | // Strip leading sequences of './' from file names, so that ./file |
| 236 | // and file are considered to be the same file. |
| 237 | // From http://www.gnu.org/software/make/manual/make.html#Features |
| 238 | func trimLeadingCurdir(s string) string { |
| 239 | for strings.HasPrefix(s, "./") { |
| 240 | s = s[2:] |
| 241 | } |
| 242 | return s |
| 243 | } |
Fumitoshi Ukai | 72508a7 | 2015-05-08 13:41:31 +0900 | [diff] [blame] | 244 | |
Fumitoshi Ukai | 8341013 | 2015-06-15 14:50:07 +0900 | [diff] [blame] | 245 | func contains(list []string, s string) bool { |
| 246 | for _, v := range list { |
| 247 | if v == s { |
| 248 | return true |
| 249 | } |
| 250 | } |
| 251 | return false |
| 252 | } |