epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
herb | b906daf | 2015-09-29 09:37:59 -0700 | [diff] [blame] | 8 | #include "SkAtomics.h" |
Mike Reed | 33f38b0 | 2018-02-14 13:58:06 -0500 | [diff] [blame] | 9 | #include "SkSafeMath.h" |
mtklein | 1b24933 | 2015-07-07 12:21:21 -0700 | [diff] [blame] | 10 | #include "SkString.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 11 | #include "SkUtils.h" |
| 12 | #include <stdarg.h> |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 13 | #include <stdio.h> |
| 14 | |
| 15 | // number of bytes (on the stack) to receive the printf result |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 16 | static const size_t kBufferSize = 1024; |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 17 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 18 | #define ARGS_TO_BUFFER(format, buffer, size, written) \ |
| 19 | do { \ |
| 20 | va_list args; \ |
| 21 | va_start(args, format); \ |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 22 | written = vsnprintf(buffer, size, format, args); \ |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 23 | SkASSERT(written >= 0 && written < SkToInt(size)); \ |
| 24 | va_end(args); \ |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 25 | } while (0) |
| 26 | |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 27 | #define V_SKSTRING_PRINTF(output, format) \ |
| 28 | do { \ |
| 29 | va_list args; \ |
| 30 | va_start(args, format); \ |
| 31 | char buffer[kBufferSize]; \ |
| 32 | int length = vsnprintf(buffer, sizeof(buffer), format, args); \ |
| 33 | va_end(args); \ |
| 34 | if (length < 0) { \ |
| 35 | break; \ |
| 36 | } \ |
| 37 | if (length < (int)sizeof(buffer)) { \ |
| 38 | output.set(buffer, length); \ |
| 39 | break; \ |
| 40 | } \ |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 41 | SkString tmp((size_t)length); \ |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 42 | va_start(args, format); \ |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 43 | SkDEBUGCODE(int check = ) vsnprintf(tmp.writable_str(), \ |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 44 | length + 1, format, args); \ |
| 45 | va_end(args); \ |
| 46 | SkASSERT(check == length); \ |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 47 | output = std::move(tmp); \ |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 48 | SkASSERT(output[length] == '\0'); \ |
| 49 | } while (false) |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 50 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 51 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 52 | |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 53 | bool SkStrEndsWith(const char string[], const char suffixStr[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 54 | SkASSERT(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 55 | SkASSERT(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 56 | size_t strLen = strlen(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 57 | size_t suffixLen = strlen(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 58 | return strLen >= suffixLen && |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 59 | !strncmp(string + strLen - suffixLen, suffixStr, suffixLen); |
| 60 | } |
| 61 | |
| 62 | bool SkStrEndsWith(const char string[], const char suffixChar) { |
| 63 | SkASSERT(string); |
| 64 | size_t strLen = strlen(string); |
| 65 | if (0 == strLen) { |
| 66 | return false; |
| 67 | } else { |
| 68 | return (suffixChar == string[strLen-1]); |
| 69 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | } |
| 71 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 72 | int SkStrStartsWithOneOf(const char string[], const char prefixes[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 73 | int index = 0; |
| 74 | do { |
| 75 | const char* limit = strchr(prefixes, '\0'); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 76 | if (!strncmp(string, prefixes, limit - prefixes)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 77 | return index; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 78 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 79 | prefixes = limit + 1; |
| 80 | index++; |
| 81 | } while (prefixes[0]); |
| 82 | return -1; |
| 83 | } |
| 84 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 85 | char* SkStrAppendU32(char string[], uint32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 86 | SkDEBUGCODE(char* start = string;) |
| 87 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 88 | char buffer[SkStrAppendU32_MaxSize]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 90 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | do { |
| 92 | *--p = SkToU8('0' + dec % 10); |
| 93 | dec /= 10; |
| 94 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 95 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 96 | SkASSERT(p >= buffer); |
| 97 | char* stop = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 98 | while (p < stop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | *string++ = *p++; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 100 | } |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 101 | SkASSERT(string - start <= SkStrAppendU32_MaxSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 102 | return string; |
| 103 | } |
| 104 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 105 | char* SkStrAppendS32(char string[], int32_t dec) { |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 106 | uint32_t udec = dec; |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 107 | if (dec < 0) { |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 108 | *string++ = '-'; |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 109 | udec = ~udec + 1; // udec = -udec, but silences some warnings that are trying to be helpful |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 110 | } |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 111 | return SkStrAppendU32(string, udec); |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | char* SkStrAppendU64(char string[], uint64_t dec, int minDigits) { |
| 115 | SkDEBUGCODE(char* start = string;) |
| 116 | |
| 117 | char buffer[SkStrAppendU64_MaxSize]; |
| 118 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 119 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 120 | do { |
caryclark@google.com | 803eceb | 2012-06-06 12:09:34 +0000 | [diff] [blame] | 121 | *--p = SkToU8('0' + (int32_t) (dec % 10)); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 122 | dec /= 10; |
| 123 | minDigits--; |
| 124 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 125 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 126 | while (minDigits > 0) { |
| 127 | *--p = '0'; |
| 128 | minDigits--; |
| 129 | } |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 130 | |
| 131 | SkASSERT(p >= buffer); |
| 132 | size_t cp_len = buffer + sizeof(buffer) - p; |
| 133 | memcpy(string, p, cp_len); |
| 134 | string += cp_len; |
| 135 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 136 | SkASSERT(string - start <= SkStrAppendU64_MaxSize); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 137 | return string; |
| 138 | } |
| 139 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 140 | char* SkStrAppendS64(char string[], int64_t dec, int minDigits) { |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 141 | uint64_t udec = dec; |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 142 | if (dec < 0) { |
| 143 | *string++ = '-'; |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 144 | udec = ~udec + 1; // udec = -udec, but silences some warnings that are trying to be helpful |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 145 | } |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 146 | return SkStrAppendU64(string, udec, minDigits); |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 147 | } |
| 148 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 149 | char* SkStrAppendFloat(char string[], float value) { |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 150 | // since floats have at most 8 significant digits, we limit our %g to that. |
| 151 | static const char gFormat[] = "%.8g"; |
| 152 | // make it 1 larger for the terminating 0 |
| 153 | char buffer[SkStrAppendScalar_MaxSize + 1]; |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 154 | int len = snprintf(buffer, sizeof(buffer), gFormat, value); |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 155 | memcpy(string, buffer, len); |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 156 | SkASSERT(len <= SkStrAppendScalar_MaxSize); |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 157 | return string + len; |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 158 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 159 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 160 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 161 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 162 | const SkString::Rec SkString::gEmptyRec(0, 0); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 163 | |
| 164 | #define SizeOfRec() (gEmptyRec.data() - (const char*)&gEmptyRec) |
| 165 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 166 | static uint32_t trim_size_t_to_u32(size_t value) { |
| 167 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 168 | if (value > SK_MaxU32) { |
| 169 | value = SK_MaxU32; |
| 170 | } |
| 171 | } |
| 172 | return (uint32_t)value; |
| 173 | } |
| 174 | |
| 175 | static size_t check_add32(size_t base, size_t extra) { |
| 176 | SkASSERT(base <= SK_MaxU32); |
| 177 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 178 | if (base + extra > SK_MaxU32) { |
| 179 | extra = SK_MaxU32 - base; |
| 180 | } |
| 181 | } |
| 182 | return extra; |
| 183 | } |
| 184 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 185 | sk_sp<SkString::Rec> SkString::Rec::Make(const char text[], size_t len) { |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 186 | if (0 == len) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 187 | return sk_sp<SkString::Rec>(const_cast<Rec*>(&gEmptyRec)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 188 | } |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 189 | |
Mike Reed | 33f38b0 | 2018-02-14 13:58:06 -0500 | [diff] [blame] | 190 | SkSafeMath safe; |
| 191 | // We store a 32bit version of the length |
| 192 | uint32_t stringLen = safe.castTo<uint32_t>(len); |
| 193 | // Add SizeOfRec() for our overhead and 1 for null-termination |
| 194 | size_t allocationSize = safe.add(len, SizeOfRec() + sizeof(char)); |
| 195 | // Align up to a multiple of 4 |
| 196 | allocationSize = safe.alignUp(allocationSize, 4); |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 197 | |
Mike Reed | 33f38b0 | 2018-02-14 13:58:06 -0500 | [diff] [blame] | 198 | SkASSERT_RELEASE(safe.ok()); |
| 199 | |
| 200 | void* storage = ::operator new (allocationSize); |
| 201 | sk_sp<Rec> rec(new (storage) Rec(stringLen, 1)); |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 202 | if (text) { |
| 203 | memcpy(rec->data(), text, len); |
| 204 | } |
| 205 | rec->data()[len] = 0; |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame] | 206 | return rec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 207 | } |
| 208 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 209 | void SkString::Rec::ref() const { |
| 210 | if (this == &SkString::gEmptyRec) { |
| 211 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 212 | } |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 213 | SkAssertResult(this->fRefCnt.fetch_add(+1, std::memory_order_relaxed)); |
| 214 | } |
| 215 | |
| 216 | void SkString::Rec::unref() const { |
| 217 | if (this == &SkString::gEmptyRec) { |
| 218 | return; |
| 219 | } |
| 220 | int32_t oldRefCnt = this->fRefCnt.fetch_add(-1, std::memory_order_acq_rel); |
| 221 | SkASSERT(oldRefCnt); |
| 222 | if (1 == oldRefCnt) { |
| 223 | delete this; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | bool SkString::Rec::unique() const { |
| 228 | return fRefCnt.load(std::memory_order_acquire) == 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | #ifdef SK_DEBUG |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 232 | void SkString::validate() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 233 | // make sure know one has written over our global |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 234 | SkASSERT(0 == gEmptyRec.fLength); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 235 | SkASSERT(0 == gEmptyRec.fRefCnt.load(std::memory_order_relaxed)); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 236 | SkASSERT(0 == gEmptyRec.data()[0]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 237 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 238 | if (fRec.get() != &gEmptyRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 239 | SkASSERT(fRec->fLength > 0); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 240 | SkASSERT(fRec->fRefCnt.load(std::memory_order_relaxed) > 0); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 241 | SkASSERT(0 == fRec->data()[fRec->fLength]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 242 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 243 | } |
| 244 | #endif |
| 245 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 246 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 247 | |
| 248 | SkString::SkString() : fRec(const_cast<Rec*>(&gEmptyRec)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 249 | } |
| 250 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 251 | SkString::SkString(size_t len) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 252 | fRec = Rec::Make(nullptr, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 253 | } |
| 254 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 255 | SkString::SkString(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 256 | size_t len = text ? strlen(text) : 0; |
| 257 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 258 | fRec = Rec::Make(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 259 | } |
| 260 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 261 | SkString::SkString(const char text[], size_t len) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 262 | fRec = Rec::Make(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 263 | } |
| 264 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 265 | SkString::SkString(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 266 | src.validate(); |
| 267 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 268 | fRec = src.fRec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 269 | } |
| 270 | |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 271 | SkString::SkString(SkString&& src) { |
| 272 | src.validate(); |
| 273 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 274 | fRec = std::move(src.fRec); |
| 275 | src.fRec.reset(const_cast<Rec*>(&gEmptyRec)); |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 276 | } |
| 277 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 278 | SkString::~SkString() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 279 | this->validate(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 280 | } |
| 281 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 282 | bool SkString::equals(const SkString& src) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 283 | return fRec == src.fRec || this->equals(src.c_str(), src.size()); |
| 284 | } |
| 285 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 286 | bool SkString::equals(const char text[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 287 | return this->equals(text, text ? strlen(text) : 0); |
| 288 | } |
| 289 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 290 | bool SkString::equals(const char text[], size_t len) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 291 | SkASSERT(len == 0 || text != nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 292 | |
| 293 | return fRec->fLength == len && !memcmp(fRec->data(), text, len); |
| 294 | } |
| 295 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 296 | SkString& SkString::operator=(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 297 | this->validate(); |
| 298 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 299 | if (fRec != src.fRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 300 | SkString tmp(src); |
| 301 | this->swap(tmp); |
| 302 | } |
| 303 | return *this; |
| 304 | } |
| 305 | |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 306 | SkString& SkString::operator=(SkString&& src) { |
| 307 | this->validate(); |
| 308 | |
| 309 | if (fRec != src.fRec) { |
| 310 | this->swap(src); |
| 311 | } |
| 312 | return *this; |
| 313 | } |
| 314 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 315 | SkString& SkString::operator=(const char text[]) { |
| 316 | this->validate(); |
| 317 | |
| 318 | SkString tmp(text); |
| 319 | this->swap(tmp); |
| 320 | |
| 321 | return *this; |
| 322 | } |
| 323 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 324 | void SkString::reset() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 325 | this->validate(); |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 326 | fRec.reset(const_cast<Rec*>(&gEmptyRec)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 327 | } |
| 328 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 329 | char* SkString::writable_str() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 330 | this->validate(); |
| 331 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 332 | if (fRec->fLength) { |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 333 | if (!fRec->unique()) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 334 | fRec = Rec::Make(fRec->data(), fRec->fLength); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 335 | } |
| 336 | } |
| 337 | return fRec->data(); |
| 338 | } |
| 339 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 340 | void SkString::set(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 341 | this->set(text, text ? strlen(text) : 0); |
| 342 | } |
| 343 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 344 | void SkString::set(const char text[], size_t len) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 345 | len = trim_size_t_to_u32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 346 | bool unique = fRec->unique(); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 347 | if (0 == len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 348 | this->reset(); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 349 | } else if (unique && len <= fRec->fLength) { |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 350 | // should we resize if len <<<< fLength, to save RAM? (e.g. len < (fLength>>1))? |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 351 | // just use less of the buffer without allocating a smaller one |
| 352 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 353 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 354 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 355 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 356 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 357 | fRec->fLength = SkToU32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 358 | } else if (unique && (fRec->fLength >> 2) == (len >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 359 | // we have spare room in the current allocation, so don't alloc a larger one |
| 360 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 361 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 362 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 363 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 364 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 365 | fRec->fLength = SkToU32(len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 366 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 367 | SkString tmp(text, len); |
| 368 | this->swap(tmp); |
| 369 | } |
| 370 | } |
| 371 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 372 | void SkString::setUTF16(const uint16_t src[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 373 | int count = 0; |
| 374 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 375 | while (src[count]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 376 | count += 1; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 377 | } |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 378 | this->setUTF16(src, count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 379 | } |
| 380 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 381 | void SkString::setUTF16(const uint16_t src[], size_t count) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 382 | count = trim_size_t_to_u32(count); |
| 383 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 384 | if (0 == count) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 385 | this->reset(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 386 | } else if (count <= fRec->fLength) { |
| 387 | // should we resize if len <<<< fLength, to save RAM? (e.g. len < (fLength>>1)) |
| 388 | if (count < fRec->fLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 389 | this->resize(count); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 390 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 391 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 392 | for (size_t i = 0; i < count; i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 393 | p[i] = SkToU8(src[i]); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 394 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 395 | p[count] = 0; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 396 | } else { |
| 397 | SkString tmp(count); // puts a null terminator at the end of the string |
| 398 | char* p = tmp.writable_str(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 399 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 400 | for (size_t i = 0; i < count; i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 401 | p[i] = SkToU8(src[i]); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 402 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 403 | this->swap(tmp); |
| 404 | } |
| 405 | } |
| 406 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 407 | void SkString::insert(size_t offset, const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 408 | this->insert(offset, text, text ? strlen(text) : 0); |
| 409 | } |
| 410 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 411 | void SkString::insert(size_t offset, const char text[], size_t len) { |
| 412 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 413 | size_t length = fRec->fLength; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 414 | if (offset > length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 415 | offset = length; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 416 | } |
skia.committer@gmail.com | 8f6ef40 | 2013-06-05 07:01:06 +0000 | [diff] [blame] | 417 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 418 | // Check if length + len exceeds 32bits, we trim len |
| 419 | len = check_add32(length, len); |
| 420 | if (0 == len) { |
| 421 | return; |
| 422 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 423 | |
| 424 | /* If we're the only owner, and we have room in our allocation for the insert, |
| 425 | do it in place, rather than allocating a new buffer. |
| 426 | |
| 427 | To know we have room, compare the allocated sizes |
| 428 | beforeAlloc = SkAlign4(length + 1) |
| 429 | afterAlloc = SkAligh4(length + 1 + len) |
| 430 | but SkAlign4(x) is (x + 3) >> 2 << 2 |
| 431 | which is equivalent for testing to (length + 1 + 3) >> 2 == (length + 1 + 3 + len) >> 2 |
| 432 | and we can then eliminate the +1+3 since that doesn't affec the answer |
| 433 | */ |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 434 | if (fRec->unique() && (length >> 2) == ((length + len) >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 435 | char* dst = this->writable_str(); |
| 436 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 437 | if (offset < length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | memmove(dst + offset + len, dst + offset, length - offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 439 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 440 | memcpy(dst + offset, text, len); |
| 441 | |
| 442 | dst[length + len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 443 | fRec->fLength = SkToU32(length + len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 444 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 445 | /* Seems we should use realloc here, since that is safe if it fails |
| 446 | (we have the original data), and might be faster than alloc/copy/free. |
| 447 | */ |
| 448 | SkString tmp(fRec->fLength + len); |
| 449 | char* dst = tmp.writable_str(); |
| 450 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 451 | if (offset > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 452 | memcpy(dst, fRec->data(), offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 453 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 454 | memcpy(dst + offset, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 455 | if (offset < fRec->fLength) { |
| 456 | memcpy(dst + offset + len, fRec->data() + offset, |
| 457 | fRec->fLength - offset); |
| 458 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 459 | |
| 460 | this->swap(tmp); |
| 461 | } |
| 462 | } |
| 463 | } |
| 464 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 465 | void SkString::insertUnichar(size_t offset, SkUnichar uni) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 466 | char buffer[kMaxBytesInUTF8Sequence]; |
| 467 | size_t len = SkUTF8_FromUnichar(uni, buffer); |
| 468 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 469 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 470 | this->insert(offset, buffer, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 471 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 472 | } |
| 473 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 474 | void SkString::insertS32(size_t offset, int32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 475 | char buffer[SkStrAppendS32_MaxSize]; |
| 476 | char* stop = SkStrAppendS32(buffer, dec); |
| 477 | this->insert(offset, buffer, stop - buffer); |
| 478 | } |
| 479 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 480 | void SkString::insertS64(size_t offset, int64_t dec, int minDigits) { |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 481 | char buffer[SkStrAppendS64_MaxSize]; |
| 482 | char* stop = SkStrAppendS64(buffer, dec, minDigits); |
| 483 | this->insert(offset, buffer, stop - buffer); |
| 484 | } |
| 485 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 486 | void SkString::insertU32(size_t offset, uint32_t dec) { |
| 487 | char buffer[SkStrAppendU32_MaxSize]; |
| 488 | char* stop = SkStrAppendU32(buffer, dec); |
| 489 | this->insert(offset, buffer, stop - buffer); |
| 490 | } |
| 491 | |
| 492 | void SkString::insertU64(size_t offset, uint64_t dec, int minDigits) { |
| 493 | char buffer[SkStrAppendU64_MaxSize]; |
| 494 | char* stop = SkStrAppendU64(buffer, dec, minDigits); |
| 495 | this->insert(offset, buffer, stop - buffer); |
| 496 | } |
| 497 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 498 | void SkString::insertHex(size_t offset, uint32_t hex, int minDigits) { |
bungeman | 62ce030 | 2015-08-28 09:09:32 -0700 | [diff] [blame] | 499 | minDigits = SkTPin(minDigits, 0, 8); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 500 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 501 | char buffer[8]; |
| 502 | char* p = buffer + sizeof(buffer); |
| 503 | |
| 504 | do { |
Hal Canary | d6e6e66 | 2017-06-17 10:38:13 -0400 | [diff] [blame] | 505 | *--p = SkHexadecimalDigits::gUpper[hex & 0xF]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 506 | hex >>= 4; |
| 507 | minDigits -= 1; |
| 508 | } while (hex != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 509 | |
| 510 | while (--minDigits >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 511 | *--p = '0'; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 512 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 513 | |
| 514 | SkASSERT(p >= buffer); |
| 515 | this->insert(offset, p, buffer + sizeof(buffer) - p); |
| 516 | } |
| 517 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 518 | void SkString::insertScalar(size_t offset, SkScalar value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 519 | char buffer[SkStrAppendScalar_MaxSize]; |
| 520 | char* stop = SkStrAppendScalar(buffer, value); |
| 521 | this->insert(offset, buffer, stop - buffer); |
| 522 | } |
| 523 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 524 | void SkString::printf(const char format[], ...) { |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 525 | V_SKSTRING_PRINTF((*this), format); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | void SkString::appendf(const char format[], ...) { |
| 529 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 530 | int length; |
| 531 | ARGS_TO_BUFFER(format, buffer, kBufferSize, length); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 532 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 533 | this->append(buffer, length); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 534 | } |
| 535 | |
commit-bot@chromium.org | ce0e4ef | 2013-11-21 17:20:17 +0000 | [diff] [blame] | 536 | void SkString::appendVAList(const char format[], va_list args) { |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 537 | char buffer[kBufferSize]; |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 538 | int length = vsnprintf(buffer, kBufferSize, format, args); |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 539 | SkASSERT(length >= 0 && length < SkToInt(kBufferSize)); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 540 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 541 | this->append(buffer, length); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 542 | } |
| 543 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 544 | void SkString::prependf(const char format[], ...) { |
| 545 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 546 | int length; |
| 547 | ARGS_TO_BUFFER(format, buffer, kBufferSize, length); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 548 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 549 | this->prepend(buffer, length); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 550 | } |
| 551 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 552 | void SkString::prependVAList(const char format[], va_list args) { |
| 553 | char buffer[kBufferSize]; |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame^] | 554 | int length = vsnprintf(buffer, kBufferSize, format, args); |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 555 | SkASSERT(length >= 0 && length < SkToInt(kBufferSize)); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 556 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 557 | this->prepend(buffer, length); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 558 | } |
| 559 | |
| 560 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 561 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 562 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 563 | void SkString::remove(size_t offset, size_t length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 564 | size_t size = this->size(); |
| 565 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 566 | if (offset < size) { |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 567 | if (length > size - offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 568 | length = size - offset; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 569 | } |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 570 | SkASSERT(length <= size); |
| 571 | SkASSERT(offset <= size - length); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 572 | if (length > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 573 | SkString tmp(size - length); |
| 574 | char* dst = tmp.writable_str(); |
| 575 | const char* src = this->c_str(); |
| 576 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 577 | if (offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 578 | memcpy(dst, src, offset); |
| 579 | } |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 580 | size_t tail = size - (offset + length); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 581 | if (tail) { |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 582 | memcpy(dst + offset, src + (offset + length), tail); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 583 | } |
| 584 | SkASSERT(dst[tmp.size()] == 0); |
| 585 | this->swap(tmp); |
| 586 | } |
| 587 | } |
| 588 | } |
| 589 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 590 | void SkString::swap(SkString& other) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 591 | this->validate(); |
| 592 | other.validate(); |
| 593 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 594 | SkTSwap(fRec, other.fRec); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 595 | } |
| 596 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 597 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 598 | |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 599 | SkString SkStringPrintf(const char* format, ...) { |
| 600 | SkString formattedOutput; |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 601 | V_SKSTRING_PRINTF(formattedOutput, format); |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 602 | return formattedOutput; |
| 603 | } |
| 604 | |
kkinnunen | 3e980c3 | 2015-12-23 01:33:00 -0800 | [diff] [blame] | 605 | void SkStrSplit(const char* str, const char* delimiters, SkStrSplitMode splitMode, |
| 606 | SkTArray<SkString>* out) { |
| 607 | if (splitMode == kCoalesce_SkStrSplitMode) { |
rmistry | 0f515bd | 2015-12-22 10:22:26 -0800 | [diff] [blame] | 608 | // Skip any delimiters. |
| 609 | str += strspn(str, delimiters); |
kkinnunen | 9ebc3f0 | 2015-12-21 23:48:13 -0800 | [diff] [blame] | 610 | } |
kkinnunen | 3e980c3 | 2015-12-23 01:33:00 -0800 | [diff] [blame] | 611 | if (!*str) { |
| 612 | return; |
| 613 | } |
| 614 | |
| 615 | while (true) { |
| 616 | // Find a token. |
| 617 | const size_t len = strcspn(str, delimiters); |
| 618 | if (splitMode == kStrict_SkStrSplitMode || len > 0) { |
| 619 | out->push_back().set(str, len); |
| 620 | str += len; |
| 621 | } |
| 622 | |
| 623 | if (!*str) { |
| 624 | return; |
| 625 | } |
| 626 | if (splitMode == kCoalesce_SkStrSplitMode) { |
| 627 | // Skip any delimiters. |
| 628 | str += strspn(str, delimiters); |
| 629 | } else { |
| 630 | // Skip one delimiter. |
| 631 | str += 1; |
| 632 | } |
| 633 | } |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 634 | } |