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 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | |
herb | b906daf | 2015-09-29 09:37:59 -0700 | [diff] [blame] | 9 | #include "SkAtomics.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 | |
| 18 | #ifdef SK_BUILD_FOR_WIN |
tomhudson@google.com | 47e0a09 | 2011-07-08 17:49:22 +0000 | [diff] [blame] | 19 | #define VSNPRINTF(buffer, size, format, args) \ |
| 20 | _vsnprintf_s(buffer, size, _TRUNCATE, format, args) |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 21 | #define SNPRINTF _snprintf |
| 22 | #else |
| 23 | #define VSNPRINTF vsnprintf |
| 24 | #define SNPRINTF snprintf |
| 25 | #endif |
| 26 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 27 | #define ARGS_TO_BUFFER(format, buffer, size, written) \ |
| 28 | do { \ |
| 29 | va_list args; \ |
| 30 | va_start(args, format); \ |
| 31 | written = VSNPRINTF(buffer, size, format, args); \ |
| 32 | SkASSERT(written >= 0 && written < SkToInt(size)); \ |
| 33 | va_end(args); \ |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 34 | } while (0) |
| 35 | |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 36 | #ifdef SK_BUILD_FOR_WIN |
| 37 | #define V_SKSTRING_PRINTF(output, format) \ |
| 38 | do { \ |
| 39 | va_list args; \ |
| 40 | va_start(args, format); \ |
| 41 | char buffer[kBufferSize]; \ |
| 42 | int length = _vsnprintf_s(buffer, sizeof(buffer), \ |
| 43 | _TRUNCATE, format, args); \ |
| 44 | va_end(args); \ |
| 45 | if (length >= 0 && length < (int)sizeof(buffer)) { \ |
| 46 | output.set(buffer, length); \ |
| 47 | break; \ |
| 48 | } \ |
| 49 | va_start(args, format); \ |
| 50 | length = _vscprintf(format, args); \ |
| 51 | va_end(args); \ |
| 52 | SkAutoTMalloc<char> autoTMalloc((size_t)length + 1); \ |
| 53 | va_start(args, format); \ |
| 54 | SkDEBUGCODE(int check = ) _vsnprintf_s(autoTMalloc.get(), \ |
| 55 | length + 1, _TRUNCATE, \ |
| 56 | format, args); \ |
| 57 | va_end(args); \ |
| 58 | SkASSERT(check == length); \ |
| 59 | output.set(autoTMalloc.get(), length); \ |
| 60 | SkASSERT(output[length] == '\0'); \ |
| 61 | } while (false) |
| 62 | #else |
| 63 | #define V_SKSTRING_PRINTF(output, format) \ |
| 64 | do { \ |
| 65 | va_list args; \ |
| 66 | va_start(args, format); \ |
| 67 | char buffer[kBufferSize]; \ |
| 68 | int length = vsnprintf(buffer, sizeof(buffer), format, args); \ |
| 69 | va_end(args); \ |
| 70 | if (length < 0) { \ |
| 71 | break; \ |
| 72 | } \ |
| 73 | if (length < (int)sizeof(buffer)) { \ |
| 74 | output.set(buffer, length); \ |
| 75 | break; \ |
| 76 | } \ |
| 77 | SkAutoTMalloc<char> autoTMalloc((size_t)length + 1); \ |
| 78 | va_start(args, format); \ |
| 79 | SkDEBUGCODE(int check = ) vsnprintf(autoTMalloc.get(), \ |
| 80 | length + 1, format, args); \ |
| 81 | va_end(args); \ |
| 82 | SkASSERT(check == length); \ |
| 83 | output.set(autoTMalloc.get(), length); \ |
| 84 | SkASSERT(output[length] == '\0'); \ |
| 85 | } while (false) |
| 86 | #endif |
| 87 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 88 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 90 | bool SkStrEndsWith(const char string[], const char suffixStr[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | SkASSERT(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 92 | SkASSERT(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 93 | size_t strLen = strlen(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 94 | size_t suffixLen = strlen(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 95 | return strLen >= suffixLen && |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 96 | !strncmp(string + strLen - suffixLen, suffixStr, suffixLen); |
| 97 | } |
| 98 | |
| 99 | bool SkStrEndsWith(const char string[], const char suffixChar) { |
| 100 | SkASSERT(string); |
| 101 | size_t strLen = strlen(string); |
| 102 | if (0 == strLen) { |
| 103 | return false; |
| 104 | } else { |
| 105 | return (suffixChar == string[strLen-1]); |
| 106 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 107 | } |
| 108 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 109 | int SkStrStartsWithOneOf(const char string[], const char prefixes[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 110 | int index = 0; |
| 111 | do { |
| 112 | const char* limit = strchr(prefixes, '\0'); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 113 | if (!strncmp(string, prefixes, limit - prefixes)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | return index; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 115 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 116 | prefixes = limit + 1; |
| 117 | index++; |
| 118 | } while (prefixes[0]); |
| 119 | return -1; |
| 120 | } |
| 121 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 122 | char* SkStrAppendU32(char string[], uint32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 123 | SkDEBUGCODE(char* start = string;) |
| 124 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 125 | char buffer[SkStrAppendU32_MaxSize]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 126 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 127 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 128 | do { |
| 129 | *--p = SkToU8('0' + dec % 10); |
| 130 | dec /= 10; |
| 131 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 132 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 133 | SkASSERT(p >= buffer); |
| 134 | char* stop = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 135 | while (p < stop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 136 | *string++ = *p++; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 137 | } |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 138 | SkASSERT(string - start <= SkStrAppendU32_MaxSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 139 | return string; |
| 140 | } |
| 141 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 142 | char* SkStrAppendS32(char string[], int32_t dec) { |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 143 | uint32_t udec = dec; |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 144 | if (dec < 0) { |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 145 | *string++ = '-'; |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 146 | 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] | 147 | } |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 148 | return SkStrAppendU32(string, udec); |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | char* SkStrAppendU64(char string[], uint64_t dec, int minDigits) { |
| 152 | SkDEBUGCODE(char* start = string;) |
| 153 | |
| 154 | char buffer[SkStrAppendU64_MaxSize]; |
| 155 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 156 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 157 | do { |
caryclark@google.com | 803eceb | 2012-06-06 12:09:34 +0000 | [diff] [blame] | 158 | *--p = SkToU8('0' + (int32_t) (dec % 10)); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 159 | dec /= 10; |
| 160 | minDigits--; |
| 161 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 162 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 163 | while (minDigits > 0) { |
| 164 | *--p = '0'; |
| 165 | minDigits--; |
| 166 | } |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 167 | |
| 168 | SkASSERT(p >= buffer); |
| 169 | size_t cp_len = buffer + sizeof(buffer) - p; |
| 170 | memcpy(string, p, cp_len); |
| 171 | string += cp_len; |
| 172 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 173 | SkASSERT(string - start <= SkStrAppendU64_MaxSize); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 174 | return string; |
| 175 | } |
| 176 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 177 | char* SkStrAppendS64(char string[], int64_t dec, int minDigits) { |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 178 | uint64_t udec = dec; |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 179 | if (dec < 0) { |
| 180 | *string++ = '-'; |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 181 | 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] | 182 | } |
mtklein | 225fb98 | 2014-11-05 11:35:21 -0800 | [diff] [blame] | 183 | return SkStrAppendU64(string, udec, minDigits); |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 184 | } |
| 185 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 186 | char* SkStrAppendFloat(char string[], float value) { |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 187 | // since floats have at most 8 significant digits, we limit our %g to that. |
| 188 | static const char gFormat[] = "%.8g"; |
| 189 | // make it 1 larger for the terminating 0 |
| 190 | char buffer[SkStrAppendScalar_MaxSize + 1]; |
| 191 | int len = SNPRINTF(buffer, sizeof(buffer), gFormat, value); |
| 192 | memcpy(string, buffer, len); |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 193 | SkASSERT(len <= SkStrAppendScalar_MaxSize); |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 194 | return string + len; |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 195 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 196 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 197 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 198 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 199 | // the 3 values are [length] [refcnt] [terminating zero data] |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 200 | const SkString::Rec SkString::gEmptyRec = { 0, {0}, 0 }; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 201 | |
| 202 | #define SizeOfRec() (gEmptyRec.data() - (const char*)&gEmptyRec) |
| 203 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 204 | static uint32_t trim_size_t_to_u32(size_t value) { |
| 205 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 206 | if (value > SK_MaxU32) { |
| 207 | value = SK_MaxU32; |
| 208 | } |
| 209 | } |
| 210 | return (uint32_t)value; |
| 211 | } |
| 212 | |
| 213 | static size_t check_add32(size_t base, size_t extra) { |
| 214 | SkASSERT(base <= SK_MaxU32); |
| 215 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 216 | if (base + extra > SK_MaxU32) { |
| 217 | extra = SK_MaxU32 - base; |
| 218 | } |
| 219 | } |
| 220 | return extra; |
| 221 | } |
| 222 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 223 | SkString::Rec* SkString::AllocRec(const char text[], size_t len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 224 | Rec* rec; |
| 225 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 226 | if (0 == len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 227 | rec = const_cast<Rec*>(&gEmptyRec); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 228 | } else { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 229 | len = trim_size_t_to_u32(len); |
| 230 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 231 | // add 1 for terminating 0, then align4 so we can have some slop when growing the string |
| 232 | rec = (Rec*)sk_malloc_throw(SizeOfRec() + SkAlign4(len + 1)); |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 233 | rec->fLength = SkToU32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 234 | rec->fRefCnt.store(+1, std::memory_order_relaxed); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 235 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 236 | memcpy(rec->data(), text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 237 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 238 | rec->data()[len] = 0; |
| 239 | } |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 240 | return rec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 243 | SkString::Rec* SkString::RefRec(Rec* src) { |
| 244 | if (src != &gEmptyRec) { |
| 245 | // No barrier required. |
| 246 | (void)src->fRefCnt.fetch_add(+1, std::memory_order_relaxed); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 247 | } |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 248 | return src; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | #ifdef SK_DEBUG |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 252 | void SkString::validate() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 253 | // make sure know one has written over our global |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 254 | SkASSERT(0 == gEmptyRec.fLength); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 255 | SkASSERT(0 == gEmptyRec.fRefCnt.load(std::memory_order_relaxed)); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 256 | SkASSERT(0 == gEmptyRec.data()[0]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 257 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 258 | if (fRec != &gEmptyRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 259 | SkASSERT(fRec->fLength > 0); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 260 | SkASSERT(fRec->fRefCnt.load(std::memory_order_relaxed) > 0); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 261 | SkASSERT(0 == fRec->data()[fRec->fLength]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 262 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 263 | } |
| 264 | #endif |
| 265 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 266 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 267 | |
| 268 | SkString::SkString() : fRec(const_cast<Rec*>(&gEmptyRec)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 269 | } |
| 270 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 271 | SkString::SkString(size_t len) { |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 272 | fRec = AllocRec(nullptr, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 273 | } |
| 274 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 275 | SkString::SkString(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 276 | size_t len = text ? strlen(text) : 0; |
| 277 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 278 | fRec = AllocRec(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 279 | } |
| 280 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 281 | SkString::SkString(const char text[], size_t len) { |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 282 | fRec = AllocRec(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 283 | } |
| 284 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 285 | SkString::SkString(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 286 | src.validate(); |
| 287 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 288 | fRec = RefRec(src.fRec); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 289 | } |
| 290 | |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 291 | SkString::SkString(SkString&& src) { |
| 292 | src.validate(); |
| 293 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 294 | fRec = src.fRec; |
| 295 | src.fRec = const_cast<Rec*>(&gEmptyRec); |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 296 | } |
| 297 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 298 | SkString::~SkString() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 299 | this->validate(); |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 300 | |
| 301 | if (fRec->fLength) { |
| 302 | SkASSERT(fRec->fRefCnt.load(std::memory_order_relaxed) > 0); |
| 303 | if (1 == fRec->fRefCnt.fetch_add(-1, std::memory_order_acq_rel)) { |
| 304 | sk_free(fRec); |
| 305 | } |
| 306 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 307 | } |
| 308 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 309 | bool SkString::equals(const SkString& src) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 310 | return fRec == src.fRec || this->equals(src.c_str(), src.size()); |
| 311 | } |
| 312 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 313 | bool SkString::equals(const char text[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 314 | return this->equals(text, text ? strlen(text) : 0); |
| 315 | } |
| 316 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 317 | bool SkString::equals(const char text[], size_t len) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 318 | SkASSERT(len == 0 || text != nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 319 | |
| 320 | return fRec->fLength == len && !memcmp(fRec->data(), text, len); |
| 321 | } |
| 322 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 323 | SkString& SkString::operator=(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 324 | this->validate(); |
| 325 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 326 | if (fRec != src.fRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 327 | SkString tmp(src); |
| 328 | this->swap(tmp); |
| 329 | } |
| 330 | return *this; |
| 331 | } |
| 332 | |
bungeman | 9d55297 | 2016-02-07 18:42:54 -0800 | [diff] [blame] | 333 | SkString& SkString::operator=(SkString&& src) { |
| 334 | this->validate(); |
| 335 | |
| 336 | if (fRec != src.fRec) { |
| 337 | this->swap(src); |
| 338 | } |
| 339 | return *this; |
| 340 | } |
| 341 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 342 | SkString& SkString::operator=(const char text[]) { |
| 343 | this->validate(); |
| 344 | |
| 345 | SkString tmp(text); |
| 346 | this->swap(tmp); |
| 347 | |
| 348 | return *this; |
| 349 | } |
| 350 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 351 | void SkString::reset() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 352 | this->validate(); |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 353 | |
| 354 | if (fRec->fLength) { |
| 355 | SkASSERT(fRec->fRefCnt.load(std::memory_order_relaxed) > 0); |
| 356 | if (1 == fRec->fRefCnt.fetch_add(-1, std::memory_order_acq_rel)) { |
| 357 | sk_free(fRec); |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | fRec = const_cast<Rec*>(&gEmptyRec); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 362 | } |
| 363 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 364 | char* SkString::writable_str() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 365 | this->validate(); |
| 366 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 367 | if (fRec->fLength) { |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 368 | if (!fRec->unique()) { |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 369 | Rec* rec = AllocRec(fRec->data(), fRec->fLength); |
| 370 | if (1 == fRec->fRefCnt.fetch_add(-1, std::memory_order_acq_rel)) { |
| 371 | // In this case after our check of fRecCnt > 1, we suddenly |
| 372 | // did become the only owner, so now we have two copies of the |
| 373 | // data (fRec and rec), so we need to delete one of them. |
| 374 | sk_free(fRec); |
| 375 | } |
| 376 | fRec = rec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 377 | } |
| 378 | } |
| 379 | return fRec->data(); |
| 380 | } |
| 381 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 382 | void SkString::set(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 383 | this->set(text, text ? strlen(text) : 0); |
| 384 | } |
| 385 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 386 | void SkString::set(const char text[], size_t len) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 387 | len = trim_size_t_to_u32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 388 | bool unique = fRec->unique(); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 389 | if (0 == len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 390 | this->reset(); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 391 | } else if (unique && len <= fRec->fLength) { |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 392 | // 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] | 393 | // just use less of the buffer without allocating a smaller one |
| 394 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 395 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 396 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 397 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 398 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 399 | fRec->fLength = SkToU32(len); |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 400 | } else if (unique && (fRec->fLength >> 2) == (len >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 401 | // we have spare room in the current allocation, so don't alloc a larger one |
| 402 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 403 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 404 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 405 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 406 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 407 | fRec->fLength = SkToU32(len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 408 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 409 | SkString tmp(text, len); |
| 410 | this->swap(tmp); |
| 411 | } |
| 412 | } |
| 413 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 414 | void SkString::setUTF16(const uint16_t src[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 415 | int count = 0; |
| 416 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 417 | while (src[count]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 418 | count += 1; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 419 | } |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 420 | this->setUTF16(src, count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 421 | } |
| 422 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 423 | void SkString::setUTF16(const uint16_t src[], size_t count) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 424 | count = trim_size_t_to_u32(count); |
| 425 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 426 | if (0 == count) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 427 | this->reset(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 428 | } else if (count <= fRec->fLength) { |
| 429 | // should we resize if len <<<< fLength, to save RAM? (e.g. len < (fLength>>1)) |
| 430 | if (count < fRec->fLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 431 | this->resize(count); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 432 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 433 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 434 | for (size_t i = 0; i < count; i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 435 | p[i] = SkToU8(src[i]); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 436 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 437 | p[count] = 0; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 438 | } else { |
| 439 | SkString tmp(count); // puts a null terminator at the end of the string |
| 440 | char* p = tmp.writable_str(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 441 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 442 | for (size_t i = 0; i < count; i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 443 | p[i] = SkToU8(src[i]); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 444 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 445 | this->swap(tmp); |
| 446 | } |
| 447 | } |
| 448 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 449 | void SkString::insert(size_t offset, const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 450 | this->insert(offset, text, text ? strlen(text) : 0); |
| 451 | } |
| 452 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 453 | void SkString::insert(size_t offset, const char text[], size_t len) { |
| 454 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 455 | size_t length = fRec->fLength; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 456 | if (offset > length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 457 | offset = length; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 458 | } |
skia.committer@gmail.com | 8f6ef40 | 2013-06-05 07:01:06 +0000 | [diff] [blame] | 459 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 460 | // Check if length + len exceeds 32bits, we trim len |
| 461 | len = check_add32(length, len); |
| 462 | if (0 == len) { |
| 463 | return; |
| 464 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 465 | |
| 466 | /* If we're the only owner, and we have room in our allocation for the insert, |
| 467 | do it in place, rather than allocating a new buffer. |
| 468 | |
| 469 | To know we have room, compare the allocated sizes |
| 470 | beforeAlloc = SkAlign4(length + 1) |
| 471 | afterAlloc = SkAligh4(length + 1 + len) |
| 472 | but SkAlign4(x) is (x + 3) >> 2 << 2 |
| 473 | which is equivalent for testing to (length + 1 + 3) >> 2 == (length + 1 + 3 + len) >> 2 |
| 474 | and we can then eliminate the +1+3 since that doesn't affec the answer |
| 475 | */ |
Ben Wagner | af89366 | 2017-10-03 11:08:14 -0400 | [diff] [blame] | 476 | if (fRec->unique() && (length >> 2) == ((length + len) >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 477 | char* dst = this->writable_str(); |
| 478 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 479 | if (offset < length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 480 | memmove(dst + offset + len, dst + offset, length - offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 481 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 482 | memcpy(dst + offset, text, len); |
| 483 | |
| 484 | dst[length + len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 485 | fRec->fLength = SkToU32(length + len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 486 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 487 | /* Seems we should use realloc here, since that is safe if it fails |
| 488 | (we have the original data), and might be faster than alloc/copy/free. |
| 489 | */ |
| 490 | SkString tmp(fRec->fLength + len); |
| 491 | char* dst = tmp.writable_str(); |
| 492 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 493 | if (offset > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 494 | memcpy(dst, fRec->data(), offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 495 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 496 | memcpy(dst + offset, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 497 | if (offset < fRec->fLength) { |
| 498 | memcpy(dst + offset + len, fRec->data() + offset, |
| 499 | fRec->fLength - offset); |
| 500 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 501 | |
| 502 | this->swap(tmp); |
| 503 | } |
| 504 | } |
| 505 | } |
| 506 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 507 | void SkString::insertUnichar(size_t offset, SkUnichar uni) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 508 | char buffer[kMaxBytesInUTF8Sequence]; |
| 509 | size_t len = SkUTF8_FromUnichar(uni, buffer); |
| 510 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 511 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 512 | this->insert(offset, buffer, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 513 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 514 | } |
| 515 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 516 | void SkString::insertS32(size_t offset, int32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 517 | char buffer[SkStrAppendS32_MaxSize]; |
| 518 | char* stop = SkStrAppendS32(buffer, dec); |
| 519 | this->insert(offset, buffer, stop - buffer); |
| 520 | } |
| 521 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 522 | void SkString::insertS64(size_t offset, int64_t dec, int minDigits) { |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 523 | char buffer[SkStrAppendS64_MaxSize]; |
| 524 | char* stop = SkStrAppendS64(buffer, dec, minDigits); |
| 525 | this->insert(offset, buffer, stop - buffer); |
| 526 | } |
| 527 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 528 | void SkString::insertU32(size_t offset, uint32_t dec) { |
| 529 | char buffer[SkStrAppendU32_MaxSize]; |
| 530 | char* stop = SkStrAppendU32(buffer, dec); |
| 531 | this->insert(offset, buffer, stop - buffer); |
| 532 | } |
| 533 | |
| 534 | void SkString::insertU64(size_t offset, uint64_t dec, int minDigits) { |
| 535 | char buffer[SkStrAppendU64_MaxSize]; |
| 536 | char* stop = SkStrAppendU64(buffer, dec, minDigits); |
| 537 | this->insert(offset, buffer, stop - buffer); |
| 538 | } |
| 539 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 540 | void SkString::insertHex(size_t offset, uint32_t hex, int minDigits) { |
bungeman | 62ce030 | 2015-08-28 09:09:32 -0700 | [diff] [blame] | 541 | minDigits = SkTPin(minDigits, 0, 8); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 542 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 543 | char buffer[8]; |
| 544 | char* p = buffer + sizeof(buffer); |
| 545 | |
| 546 | do { |
Hal Canary | d6e6e66 | 2017-06-17 10:38:13 -0400 | [diff] [blame] | 547 | *--p = SkHexadecimalDigits::gUpper[hex & 0xF]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 548 | hex >>= 4; |
| 549 | minDigits -= 1; |
| 550 | } while (hex != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 551 | |
| 552 | while (--minDigits >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 553 | *--p = '0'; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 554 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 555 | |
| 556 | SkASSERT(p >= buffer); |
| 557 | this->insert(offset, p, buffer + sizeof(buffer) - p); |
| 558 | } |
| 559 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 560 | void SkString::insertScalar(size_t offset, SkScalar value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 561 | char buffer[SkStrAppendScalar_MaxSize]; |
| 562 | char* stop = SkStrAppendScalar(buffer, value); |
| 563 | this->insert(offset, buffer, stop - buffer); |
| 564 | } |
| 565 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 566 | void SkString::printf(const char format[], ...) { |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 567 | V_SKSTRING_PRINTF((*this), format); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | void SkString::appendf(const char format[], ...) { |
| 571 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 572 | int length; |
| 573 | ARGS_TO_BUFFER(format, buffer, kBufferSize, length); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 574 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 575 | this->append(buffer, length); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 576 | } |
| 577 | |
commit-bot@chromium.org | ce0e4ef | 2013-11-21 17:20:17 +0000 | [diff] [blame] | 578 | void SkString::appendVAList(const char format[], va_list args) { |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 579 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 580 | int length = VSNPRINTF(buffer, kBufferSize, format, args); |
| 581 | SkASSERT(length >= 0 && length < SkToInt(kBufferSize)); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 582 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 583 | this->append(buffer, length); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 584 | } |
| 585 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 586 | void SkString::prependf(const char format[], ...) { |
| 587 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 588 | int length; |
| 589 | ARGS_TO_BUFFER(format, buffer, kBufferSize, length); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 590 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 591 | this->prepend(buffer, length); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 592 | } |
| 593 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 594 | void SkString::prependVAList(const char format[], va_list args) { |
| 595 | char buffer[kBufferSize]; |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 596 | int length = VSNPRINTF(buffer, kBufferSize, format, args); |
| 597 | SkASSERT(length >= 0 && length < SkToInt(kBufferSize)); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 598 | |
joshualitt | 976386b | 2014-10-23 18:23:32 -0700 | [diff] [blame] | 599 | this->prepend(buffer, length); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 603 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 604 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 605 | void SkString::remove(size_t offset, size_t length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 606 | size_t size = this->size(); |
| 607 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 608 | if (offset < size) { |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 609 | if (length > size - offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 610 | length = size - offset; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 611 | } |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 612 | SkASSERT(length <= size); |
| 613 | SkASSERT(offset <= size - length); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 614 | if (length > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 615 | SkString tmp(size - length); |
| 616 | char* dst = tmp.writable_str(); |
| 617 | const char* src = this->c_str(); |
| 618 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 619 | if (offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 620 | memcpy(dst, src, offset); |
| 621 | } |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 622 | size_t tail = size - (offset + length); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 623 | if (tail) { |
bungeman | dfb9bc4 | 2014-08-11 07:19:56 -0700 | [diff] [blame] | 624 | memcpy(dst + offset, src + (offset + length), tail); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 625 | } |
| 626 | SkASSERT(dst[tmp.size()] == 0); |
| 627 | this->swap(tmp); |
| 628 | } |
| 629 | } |
| 630 | } |
| 631 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 632 | void SkString::swap(SkString& other) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 633 | this->validate(); |
| 634 | other.validate(); |
| 635 | |
Robert Phillips | 01f8e41 | 2017-10-05 11:28:20 +0000 | [diff] [blame^] | 636 | SkTSwap<Rec*>(fRec, other.fRec); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 637 | } |
| 638 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 639 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 640 | |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 641 | SkString SkStringPrintf(const char* format, ...) { |
| 642 | SkString formattedOutput; |
halcanary | d51bdae | 2016-04-25 09:25:35 -0700 | [diff] [blame] | 643 | V_SKSTRING_PRINTF(formattedOutput, format); |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 644 | return formattedOutput; |
| 645 | } |
| 646 | |
kkinnunen | 3e980c3 | 2015-12-23 01:33:00 -0800 | [diff] [blame] | 647 | void SkStrSplit(const char* str, const char* delimiters, SkStrSplitMode splitMode, |
| 648 | SkTArray<SkString>* out) { |
| 649 | if (splitMode == kCoalesce_SkStrSplitMode) { |
rmistry | 0f515bd | 2015-12-22 10:22:26 -0800 | [diff] [blame] | 650 | // Skip any delimiters. |
| 651 | str += strspn(str, delimiters); |
kkinnunen | 9ebc3f0 | 2015-12-21 23:48:13 -0800 | [diff] [blame] | 652 | } |
kkinnunen | 3e980c3 | 2015-12-23 01:33:00 -0800 | [diff] [blame] | 653 | if (!*str) { |
| 654 | return; |
| 655 | } |
| 656 | |
| 657 | while (true) { |
| 658 | // Find a token. |
| 659 | const size_t len = strcspn(str, delimiters); |
| 660 | if (splitMode == kStrict_SkStrSplitMode || len > 0) { |
| 661 | out->push_back().set(str, len); |
| 662 | str += len; |
| 663 | } |
| 664 | |
| 665 | if (!*str) { |
| 666 | return; |
| 667 | } |
| 668 | if (splitMode == kCoalesce_SkStrSplitMode) { |
| 669 | // Skip any delimiters. |
| 670 | str += strspn(str, delimiters); |
| 671 | } else { |
| 672 | // Skip one delimiter. |
| 673 | str += 1; |
| 674 | } |
| 675 | } |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 676 | } |
| 677 | |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 678 | #undef VSNPRINTF |
tomhudson@google.com | 47e0a09 | 2011-07-08 17:49:22 +0000 | [diff] [blame] | 679 | #undef SNPRINTF |