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 | |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 8 | #include "SkString.h" |
| 9 | #include <stdarg.h> |
| 10 | #include <cstdio> |
herb | b906daf | 2015-09-29 09:37:59 -0700 | [diff] [blame] | 11 | #include "SkAtomics.h" |
Mike Reed | 33f38b0 | 2018-02-14 13:58:06 -0500 | [diff] [blame] | 12 | #include "SkSafeMath.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | #include "SkUtils.h" |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 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 | |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 18 | static const char* apply_format_string(const char* format, va_list args, char* stackBuffer, |
| 19 | size_t stackBufferSize, int* length, SkString* heapBuffer) { |
| 20 | va_list argsCopy; |
| 21 | va_copy(argsCopy, args); |
| 22 | *length = std::vsnprintf(stackBuffer, stackBufferSize, format, args); |
| 23 | if (*length < 0) { |
| 24 | SkDebugf("SkString: vsnprintf reported error."); |
| 25 | va_end(argsCopy); |
| 26 | *length = 0; |
| 27 | return stackBuffer; |
| 28 | } |
| 29 | if (*length < SkToInt(stackBufferSize)) { |
| 30 | va_end(argsCopy); |
| 31 | return stackBuffer; |
| 32 | } |
| 33 | heapBuffer->resize(*length); |
| 34 | SkDEBUGCODE(int check =) |
| 35 | std::vsnprintf(heapBuffer->writable_str(), *length + 1, format, argsCopy); |
| 36 | SkASSERT(check == *length); |
| 37 | va_end(argsCopy); |
| 38 | return heapBuffer->c_str(); |
| 39 | } |
| 40 | |
| 41 | #define ARGS_TO_BUFFER(format, buffer, size, written, result) \ |
| 42 | SkString overflow; \ |
| 43 | do { \ |
| 44 | va_list args; \ |
| 45 | va_start(args, format); \ |
| 46 | result = apply_format_string(format, args, buffer, size, &written, &overflow); \ |
| 47 | va_end(args); \ |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 48 | } while (0) |
| 49 | |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 50 | #define V_SKSTRING_PRINTF(output, format) \ |
| 51 | do { \ |
| 52 | char buffer[kBufferSize]; \ |
| 53 | va_list args; \ |
| 54 | va_start(args, format); \ |
| 55 | int length; \ |
| 56 | auto result = apply_format_string(format, args, buffer, kBufferSize, &length, &output); \ |
| 57 | SkASSERT(result == output.c_str() || result == buffer); \ |
| 58 | if (result == buffer) { \ |
| 59 | output.set(buffer, length); \ |
| 60 | } \ |
| 61 | } while (0) |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 62 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 63 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 64 | |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 65 | bool SkStrEndsWith(const char string[], const char suffixStr[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 66 | SkASSERT(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 67 | SkASSERT(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 68 | size_t strLen = strlen(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 69 | size_t suffixLen = strlen(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | return strLen >= suffixLen && |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 71 | !strncmp(string + strLen - suffixLen, suffixStr, suffixLen); |
| 72 | } |
| 73 | |
| 74 | bool SkStrEndsWith(const char string[], const char suffixChar) { |
| 75 | SkASSERT(string); |
| 76 | size_t strLen = strlen(string); |
| 77 | if (0 == strLen) { |
| 78 | return false; |
| 79 | } else { |
| 80 | return (suffixChar == string[strLen-1]); |
| 81 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 82 | } |
| 83 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 84 | int SkStrStartsWithOneOf(const char string[], const char prefixes[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | int index = 0; |
| 86 | do { |
| 87 | const char* limit = strchr(prefixes, '\0'); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 88 | if (!strncmp(string, prefixes, limit - prefixes)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | return index; |
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 | prefixes = limit + 1; |
| 92 | index++; |
| 93 | } while (prefixes[0]); |
| 94 | return -1; |
| 95 | } |
| 96 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 97 | char* SkStrAppendU32(char string[], uint32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 98 | SkDEBUGCODE(char* start = string;) |
| 99 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 100 | char buffer[SkStrAppendU32_MaxSize]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 101 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 102 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 103 | do { |
| 104 | *--p = SkToU8('0' + dec % 10); |
| 105 | dec /= 10; |
| 106 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 107 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 108 | SkASSERT(p >= buffer); |
| 109 | char* stop = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 110 | while (p < stop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 111 | *string++ = *p++; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 112 | } |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 113 | SkASSERT(string - start <= SkStrAppendU32_MaxSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | return string; |
| 115 | } |
| 116 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 117 | char* SkStrAppendS32(char string[], int32_t dec) { |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 118 | uint32_t udec = dec; |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 119 | if (dec < 0) { |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 120 | *string++ = '-'; |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 121 | 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] | 122 | } |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 123 | return SkStrAppendU32(string, udec); |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | char* SkStrAppendU64(char string[], uint64_t dec, int minDigits) { |
| 127 | SkDEBUGCODE(char* start = string;) |
| 128 | |
| 129 | char buffer[SkStrAppendU64_MaxSize]; |
| 130 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 131 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 132 | do { |
caryclark@google.com | 803eceb | 2012-06-06 12:09:34 +0000 | [diff] [blame] | 133 | *--p = SkToU8('0' + (int32_t) (dec % 10)); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 134 | dec /= 10; |
| 135 | minDigits--; |
| 136 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 137 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 138 | while (minDigits > 0) { |
| 139 | *--p = '0'; |
| 140 | minDigits--; |
| 141 | } |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 142 | |
| 143 | SkASSERT(p >= buffer); |
| 144 | size_t cp_len = buffer + sizeof(buffer) - p; |
| 145 | memcpy(string, p, cp_len); |
| 146 | string += cp_len; |
| 147 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 148 | SkASSERT(string - start <= SkStrAppendU64_MaxSize); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 149 | return string; |
| 150 | } |
| 151 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 152 | char* SkStrAppendS64(char string[], int64_t dec, int minDigits) { |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 153 | uint64_t udec = dec; |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 154 | if (dec < 0) { |
| 155 | *string++ = '-'; |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 156 | 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] | 157 | } |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 158 | return SkStrAppendU64(string, udec, minDigits); |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 159 | } |
| 160 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 161 | char* SkStrAppendFloat(char string[], float value) { |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 162 | // since floats have at most 8 significant digits, we limit our %g to that. |
| 163 | static const char gFormat[] = "%.8g"; |
| 164 | // make it 1 larger for the terminating 0 |
| 165 | char buffer[SkStrAppendScalar_MaxSize + 1]; |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame] | 166 | int len = snprintf(buffer, sizeof(buffer), gFormat, value); |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 167 | memcpy(string, buffer, len); |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 168 | SkASSERT(len <= SkStrAppendScalar_MaxSize); |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 169 | return string + len; |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 170 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 171 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 172 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 173 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 174 | const SkString::Rec SkString::gEmptyRec(0, 0); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 175 | |
| 176 | #define SizeOfRec() (gEmptyRec.data() - (const char*)&gEmptyRec) |
| 177 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 178 | static uint32_t trim_size_t_to_u32(size_t value) { |
| 179 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 180 | if (value > SK_MaxU32) { |
| 181 | value = SK_MaxU32; |
| 182 | } |
| 183 | } |
| 184 | return (uint32_t)value; |
| 185 | } |
| 186 | |
| 187 | static size_t check_add32(size_t base, size_t extra) { |
| 188 | SkASSERT(base <= SK_MaxU32); |
| 189 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 190 | if (base + extra > SK_MaxU32) { |
| 191 | extra = SK_MaxU32 - base; |
| 192 | } |
| 193 | } |
| 194 | return extra; |
| 195 | } |
| 196 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 197 | 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] | 198 | if (0 == len) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 199 | return sk_sp<SkString::Rec>(const_cast<Rec*>(&gEmptyRec)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 200 | } |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 201 | |
Mike Reed | 33f38b0 | 2018-02-14 13:58:06 -0500 | [diff] [blame] | 202 | SkSafeMath safe; |
| 203 | // We store a 32bit version of the length |
| 204 | uint32_t stringLen = safe.castTo<uint32_t>(len); |
| 205 | // Add SizeOfRec() for our overhead and 1 for null-termination |
| 206 | size_t allocationSize = safe.add(len, SizeOfRec() + sizeof(char)); |
| 207 | // Align up to a multiple of 4 |
| 208 | allocationSize = safe.alignUp(allocationSize, 4); |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 209 | |
Mike Reed | 33f38b0 | 2018-02-14 13:58:06 -0500 | [diff] [blame] | 210 | SkASSERT_RELEASE(safe.ok()); |
| 211 | |
| 212 | void* storage = ::operator new (allocationSize); |
| 213 | sk_sp<Rec> rec(new (storage) Rec(stringLen, 1)); |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 214 | if (text) { |
| 215 | memcpy(rec->data(), text, len); |
| 216 | } |
| 217 | rec->data()[len] = 0; |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame] | 218 | return rec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 219 | } |
| 220 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 221 | void SkString::Rec::ref() const { |
| 222 | if (this == &SkString::gEmptyRec) { |
| 223 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 224 | } |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 225 | SkAssertResult(this->fRefCnt.fetch_add(+1, std::memory_order_relaxed)); |
| 226 | } |
| 227 | |
| 228 | void SkString::Rec::unref() const { |
| 229 | if (this == &SkString::gEmptyRec) { |
| 230 | return; |
| 231 | } |
| 232 | int32_t oldRefCnt = this->fRefCnt.fetch_add(-1, std::memory_order_acq_rel); |
| 233 | SkASSERT(oldRefCnt); |
| 234 | if (1 == oldRefCnt) { |
| 235 | delete this; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | bool SkString::Rec::unique() const { |
| 240 | return fRefCnt.load(std::memory_order_acquire) == 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | #ifdef SK_DEBUG |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 244 | void SkString::validate() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 245 | // make sure know one has written over our global |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 246 | SkASSERT(0 == gEmptyRec.fLength); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 247 | SkASSERT(0 == gEmptyRec.fRefCnt.load(std::memory_order_relaxed)); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 248 | SkASSERT(0 == gEmptyRec.data()[0]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 249 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 250 | if (fRec.get() != &gEmptyRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 251 | SkASSERT(fRec->fLength > 0); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 252 | SkASSERT(fRec->fRefCnt.load(std::memory_order_relaxed) > 0); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 253 | SkASSERT(0 == fRec->data()[fRec->fLength]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 254 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 255 | } |
| 256 | #endif |
| 257 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 258 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 259 | |
| 260 | SkString::SkString() : fRec(const_cast<Rec*>(&gEmptyRec)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 261 | } |
| 262 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 263 | SkString::SkString(size_t len) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 264 | fRec = Rec::Make(nullptr, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 265 | } |
| 266 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 267 | SkString::SkString(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 268 | size_t len = text ? strlen(text) : 0; |
| 269 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 270 | fRec = Rec::Make(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 271 | } |
| 272 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 273 | SkString::SkString(const char text[], size_t len) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 274 | fRec = Rec::Make(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 275 | } |
| 276 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 277 | SkString::SkString(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 278 | src.validate(); |
| 279 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 280 | fRec = src.fRec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 281 | } |
| 282 | |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 283 | SkString::SkString(SkString&& src) { |
| 284 | src.validate(); |
| 285 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 286 | fRec = std::move(src.fRec); |
| 287 | src.fRec.reset(const_cast<Rec*>(&gEmptyRec)); |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 288 | } |
| 289 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 290 | SkString::~SkString() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 291 | this->validate(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 292 | } |
| 293 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 294 | bool SkString::equals(const SkString& src) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 295 | return fRec == src.fRec || this->equals(src.c_str(), src.size()); |
| 296 | } |
| 297 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 298 | bool SkString::equals(const char text[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 299 | return this->equals(text, text ? strlen(text) : 0); |
| 300 | } |
| 301 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 302 | bool SkString::equals(const char text[], size_t len) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 303 | SkASSERT(len == 0 || text != nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 304 | |
| 305 | return fRec->fLength == len && !memcmp(fRec->data(), text, len); |
| 306 | } |
| 307 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 308 | SkString& SkString::operator=(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 309 | this->validate(); |
| 310 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 311 | if (fRec != src.fRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 312 | SkString tmp(src); |
| 313 | this->swap(tmp); |
| 314 | } |
| 315 | return *this; |
| 316 | } |
| 317 | |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 318 | SkString& SkString::operator=(SkString&& src) { |
| 319 | this->validate(); |
| 320 | |
| 321 | if (fRec != src.fRec) { |
| 322 | this->swap(src); |
| 323 | } |
| 324 | return *this; |
| 325 | } |
| 326 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 327 | SkString& SkString::operator=(const char text[]) { |
| 328 | this->validate(); |
| 329 | |
| 330 | SkString tmp(text); |
| 331 | this->swap(tmp); |
| 332 | |
| 333 | return *this; |
| 334 | } |
| 335 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 336 | void SkString::reset() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 337 | this->validate(); |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 338 | fRec.reset(const_cast<Rec*>(&gEmptyRec)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 339 | } |
| 340 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 341 | char* SkString::writable_str() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 342 | this->validate(); |
| 343 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 344 | if (fRec->fLength) { |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 345 | if (!fRec->unique()) { |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 346 | fRec = Rec::Make(fRec->data(), fRec->fLength); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 347 | } |
| 348 | } |
| 349 | return fRec->data(); |
| 350 | } |
| 351 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 352 | void SkString::set(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 353 | this->set(text, text ? strlen(text) : 0); |
| 354 | } |
| 355 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 356 | void SkString::set(const char text[], size_t len) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 357 | len = trim_size_t_to_u32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 358 | bool unique = fRec->unique(); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 359 | if (0 == len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 360 | this->reset(); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 361 | } else if (unique && len <= fRec->fLength) { |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 362 | // 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] | 363 | // just use less of the buffer without allocating a smaller one |
| 364 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 365 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 366 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 367 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 368 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 369 | fRec->fLength = SkToU32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 370 | } else if (unique && (fRec->fLength >> 2) == (len >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 371 | // we have spare room in the current allocation, so don't alloc a larger one |
| 372 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 373 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 374 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 375 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 376 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 377 | fRec->fLength = SkToU32(len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 378 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 379 | SkString tmp(text, len); |
| 380 | this->swap(tmp); |
| 381 | } |
| 382 | } |
| 383 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 384 | void SkString::insert(size_t offset, const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 385 | this->insert(offset, text, text ? strlen(text) : 0); |
| 386 | } |
| 387 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 388 | void SkString::insert(size_t offset, const char text[], size_t len) { |
| 389 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 390 | size_t length = fRec->fLength; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 391 | if (offset > length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 392 | offset = length; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 393 | } |
skia.committer@gmail.com | 8f6ef40 | 2013-06-05 07:01:06 +0000 | [diff] [blame] | 394 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 395 | // Check if length + len exceeds 32bits, we trim len |
| 396 | len = check_add32(length, len); |
| 397 | if (0 == len) { |
| 398 | return; |
| 399 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 400 | |
| 401 | /* If we're the only owner, and we have room in our allocation for the insert, |
| 402 | do it in place, rather than allocating a new buffer. |
| 403 | |
| 404 | To know we have room, compare the allocated sizes |
| 405 | beforeAlloc = SkAlign4(length + 1) |
| 406 | afterAlloc = SkAligh4(length + 1 + len) |
| 407 | but SkAlign4(x) is (x + 3) >> 2 << 2 |
| 408 | which is equivalent for testing to (length + 1 + 3) >> 2 == (length + 1 + 3 + len) >> 2 |
| 409 | and we can then eliminate the +1+3 since that doesn't affec the answer |
| 410 | */ |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 411 | if (fRec->unique() && (length >> 2) == ((length + len) >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 412 | char* dst = this->writable_str(); |
| 413 | |
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 | memmove(dst + offset + len, dst + offset, length - offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 416 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 417 | memcpy(dst + offset, text, len); |
| 418 | |
| 419 | dst[length + len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 420 | fRec->fLength = SkToU32(length + len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 421 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 422 | /* Seems we should use realloc here, since that is safe if it fails |
| 423 | (we have the original data), and might be faster than alloc/copy/free. |
| 424 | */ |
| 425 | SkString tmp(fRec->fLength + len); |
| 426 | char* dst = tmp.writable_str(); |
| 427 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 428 | if (offset > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 429 | memcpy(dst, fRec->data(), offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 430 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 431 | memcpy(dst + offset, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 432 | if (offset < fRec->fLength) { |
| 433 | memcpy(dst + offset + len, fRec->data() + offset, |
| 434 | fRec->fLength - offset); |
| 435 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 436 | |
| 437 | this->swap(tmp); |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 442 | void SkString::insertUnichar(size_t offset, SkUnichar uni) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 443 | char buffer[kMaxBytesInUTF8Sequence]; |
| 444 | size_t len = SkUTF8_FromUnichar(uni, buffer); |
| 445 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 446 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 447 | this->insert(offset, buffer, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 448 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 449 | } |
| 450 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 451 | void SkString::insertS32(size_t offset, int32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 452 | char buffer[SkStrAppendS32_MaxSize]; |
| 453 | char* stop = SkStrAppendS32(buffer, dec); |
| 454 | this->insert(offset, buffer, stop - buffer); |
| 455 | } |
| 456 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 457 | void SkString::insertS64(size_t offset, int64_t dec, int minDigits) { |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 458 | char buffer[SkStrAppendS64_MaxSize]; |
| 459 | char* stop = SkStrAppendS64(buffer, dec, minDigits); |
| 460 | this->insert(offset, buffer, stop - buffer); |
| 461 | } |
| 462 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 463 | void SkString::insertU32(size_t offset, uint32_t dec) { |
| 464 | char buffer[SkStrAppendU32_MaxSize]; |
| 465 | char* stop = SkStrAppendU32(buffer, dec); |
| 466 | this->insert(offset, buffer, stop - buffer); |
| 467 | } |
| 468 | |
| 469 | void SkString::insertU64(size_t offset, uint64_t dec, int minDigits) { |
| 470 | char buffer[SkStrAppendU64_MaxSize]; |
| 471 | char* stop = SkStrAppendU64(buffer, dec, minDigits); |
| 472 | this->insert(offset, buffer, stop - buffer); |
| 473 | } |
| 474 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 475 | void SkString::insertHex(size_t offset, uint32_t hex, int minDigits) { |
bungeman | 62ce030 | 2015-08-28 09:09:32 -0700 | [diff] [blame] | 476 | minDigits = SkTPin(minDigits, 0, 8); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 477 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 478 | char buffer[8]; |
| 479 | char* p = buffer + sizeof(buffer); |
| 480 | |
| 481 | do { |
Hal Canary | d6e6e66 | 2017-06-17 10:38:13 -0400 | [diff] [blame] | 482 | *--p = SkHexadecimalDigits::gUpper[hex & 0xF]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 483 | hex >>= 4; |
| 484 | minDigits -= 1; |
| 485 | } while (hex != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 486 | |
| 487 | while (--minDigits >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 488 | *--p = '0'; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 489 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 490 | |
| 491 | SkASSERT(p >= buffer); |
| 492 | this->insert(offset, p, buffer + sizeof(buffer) - p); |
| 493 | } |
| 494 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 495 | void SkString::insertScalar(size_t offset, SkScalar value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 496 | char buffer[SkStrAppendScalar_MaxSize]; |
| 497 | char* stop = SkStrAppendScalar(buffer, value); |
| 498 | this->insert(offset, buffer, stop - buffer); |
| 499 | } |
| 500 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 501 | void SkString::printf(const char format[], ...) { |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 502 | V_SKSTRING_PRINTF((*this), format); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | void SkString::appendf(const char format[], ...) { |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 506 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 507 | int length; |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 508 | const char* result; |
| 509 | ARGS_TO_BUFFER(format, buffer, kBufferSize, length, result); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 510 | |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 511 | this->append(result, length); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 512 | } |
| 513 | |
commit-bot@chromium.org | ce0e4ef | 2013-11-21 17:20:17 +0000 | [diff] [blame] | 514 | void SkString::appendVAList(const char format[], va_list args) { |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 515 | char buffer[kBufferSize]; |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame] | 516 | int length = vsnprintf(buffer, kBufferSize, format, args); |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 517 | SkASSERT(length >= 0 && length < SkToInt(kBufferSize)); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 518 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 519 | this->append(buffer, length); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 520 | } |
| 521 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 522 | void SkString::prependf(const char format[], ...) { |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 523 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 524 | int length; |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 525 | const char* result; |
| 526 | ARGS_TO_BUFFER(format, buffer, kBufferSize, length, result); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 527 | |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 528 | this->prepend(result, length); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 529 | } |
| 530 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 531 | void SkString::prependVAList(const char format[], va_list args) { |
Brian Salomon | 4322752 | 2018-04-25 12:58:23 -0400 | [diff] [blame^] | 532 | char buffer[kBufferSize]; |
Hal Canary | 09f818d | 2018-02-22 15:12:46 -0500 | [diff] [blame] | 533 | int length = vsnprintf(buffer, kBufferSize, format, args); |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 534 | SkASSERT(length >= 0 && length < SkToInt(kBufferSize)); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 535 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 536 | this->prepend(buffer, length); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 540 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 541 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 542 | void SkString::remove(size_t offset, size_t length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 543 | size_t size = this->size(); |
| 544 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 545 | if (offset < size) { |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 546 | if (length > size - offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 547 | length = size - offset; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 548 | } |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 549 | SkASSERT(length <= size); |
| 550 | SkASSERT(offset <= size - length); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 551 | if (length > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 552 | SkString tmp(size - length); |
| 553 | char* dst = tmp.writable_str(); |
| 554 | const char* src = this->c_str(); |
| 555 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 556 | if (offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 557 | memcpy(dst, src, offset); |
| 558 | } |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 559 | size_t tail = size - (offset + length); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 560 | if (tail) { |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 561 | memcpy(dst + offset, src + (offset + length), tail); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 562 | } |
| 563 | SkASSERT(dst[tmp.size()] == 0); |
| 564 | this->swap(tmp); |
| 565 | } |
| 566 | } |
| 567 | } |
| 568 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 569 | void SkString::swap(SkString& other) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 570 | this->validate(); |
| 571 | other.validate(); |
| 572 | |
Ben Wagner | eccda1c | 2017-10-05 10:13:51 -0400 | [diff] [blame] | 573 | SkTSwap(fRec, other.fRec); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 574 | } |
| 575 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 576 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 577 | |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 578 | SkString SkStringPrintf(const char* format, ...) { |
| 579 | SkString formattedOutput; |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 580 | V_SKSTRING_PRINTF(formattedOutput, format); |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 581 | return formattedOutput; |
| 582 | } |
| 583 | |
kkinnunen | 3e980c3 | 2015-12-23 01:33:00 -0800 | [diff] [blame] | 584 | void SkStrSplit(const char* str, const char* delimiters, SkStrSplitMode splitMode, |
| 585 | SkTArray<SkString>* out) { |
| 586 | if (splitMode == kCoalesce_SkStrSplitMode) { |
rmistry | 0f515bd | 2015-12-22 10:22:26 -0800 | [diff] [blame] | 587 | // Skip any delimiters. |
| 588 | str += strspn(str, delimiters); |
kkinnunen | 9ebc3f0 | 2015-12-21 23:48:13 -0800 | [diff] [blame] | 589 | } |
kkinnunen | 3e980c3 | 2015-12-23 01:33:00 -0800 | [diff] [blame] | 590 | if (!*str) { |
| 591 | return; |
| 592 | } |
| 593 | |
| 594 | while (true) { |
| 595 | // Find a token. |
| 596 | const size_t len = strcspn(str, delimiters); |
| 597 | if (splitMode == kStrict_SkStrSplitMode || len > 0) { |
| 598 | out->push_back().set(str, len); |
| 599 | str += len; |
| 600 | } |
| 601 | |
| 602 | if (!*str) { |
| 603 | return; |
| 604 | } |
| 605 | if (splitMode == kCoalesce_SkStrSplitMode) { |
| 606 | // Skip any delimiters. |
| 607 | str += strspn(str, delimiters); |
| 608 | } else { |
| 609 | // Skip one delimiter. |
| 610 | str += 1; |
| 611 | } |
| 612 | } |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 613 | } |