epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkString.h" |
| 11 | #include "SkFixed.h" |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 12 | #include "SkThread.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | #include "SkUtils.h" |
| 14 | #include <stdarg.h> |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 15 | #include <stdio.h> |
| 16 | |
| 17 | // number of bytes (on the stack) to receive the printf result |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 18 | static const size_t kBufferSize = 1024; |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 19 | |
| 20 | #ifdef SK_BUILD_FOR_WIN |
tomhudson@google.com | 47e0a09 | 2011-07-08 17:49:22 +0000 | [diff] [blame] | 21 | #define VSNPRINTF(buffer, size, format, args) \ |
| 22 | _vsnprintf_s(buffer, size, _TRUNCATE, format, args) |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 23 | #define SNPRINTF _snprintf |
| 24 | #else |
| 25 | #define VSNPRINTF vsnprintf |
| 26 | #define SNPRINTF snprintf |
| 27 | #endif |
| 28 | |
| 29 | #define ARGS_TO_BUFFER(format, buffer, size) \ |
| 30 | do { \ |
| 31 | va_list args; \ |
| 32 | va_start(args, format); \ |
| 33 | VSNPRINTF(buffer, size, format, args); \ |
| 34 | va_end(args); \ |
| 35 | } while (0) |
| 36 | |
| 37 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 38 | |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 39 | bool SkStrEndsWith(const char string[], const char suffixStr[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 40 | SkASSERT(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 41 | SkASSERT(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 42 | size_t strLen = strlen(string); |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 43 | size_t suffixLen = strlen(suffixStr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 44 | return strLen >= suffixLen && |
epoger@google.com | e8ebeb1 | 2012-10-29 16:42:11 +0000 | [diff] [blame] | 45 | !strncmp(string + strLen - suffixLen, suffixStr, suffixLen); |
| 46 | } |
| 47 | |
| 48 | bool SkStrEndsWith(const char string[], const char suffixChar) { |
| 49 | SkASSERT(string); |
| 50 | size_t strLen = strlen(string); |
| 51 | if (0 == strLen) { |
| 52 | return false; |
| 53 | } else { |
| 54 | return (suffixChar == string[strLen-1]); |
| 55 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 56 | } |
| 57 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 58 | int SkStrStartsWithOneOf(const char string[], const char prefixes[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 59 | int index = 0; |
| 60 | do { |
| 61 | const char* limit = strchr(prefixes, '\0'); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 62 | if (!strncmp(string, prefixes, limit - prefixes)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 63 | return index; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 64 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 65 | prefixes = limit + 1; |
| 66 | index++; |
| 67 | } while (prefixes[0]); |
| 68 | return -1; |
| 69 | } |
| 70 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 71 | char* SkStrAppendU32(char string[], uint32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 72 | SkDEBUGCODE(char* start = string;) |
| 73 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 74 | char buffer[SkStrAppendU32_MaxSize]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 75 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 76 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 77 | do { |
| 78 | *--p = SkToU8('0' + dec % 10); |
| 79 | dec /= 10; |
| 80 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 81 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 82 | SkASSERT(p >= buffer); |
| 83 | char* stop = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 84 | while (p < stop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | *string++ = *p++; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 86 | } |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 87 | SkASSERT(string - start <= SkStrAppendU32_MaxSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 88 | return string; |
| 89 | } |
| 90 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 91 | char* SkStrAppendS32(char string[], int32_t dec) { |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 92 | if (dec < 0) { |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 93 | *string++ = '-'; |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 94 | dec = -dec; |
| 95 | } |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 96 | return SkStrAppendU32(string, static_cast<uint32_t>(dec)); |
| 97 | } |
| 98 | |
| 99 | char* SkStrAppendU64(char string[], uint64_t dec, int minDigits) { |
| 100 | SkDEBUGCODE(char* start = string;) |
| 101 | |
| 102 | char buffer[SkStrAppendU64_MaxSize]; |
| 103 | char* p = buffer + sizeof(buffer); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 104 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 105 | do { |
caryclark@google.com | 803eceb | 2012-06-06 12:09:34 +0000 | [diff] [blame] | 106 | *--p = SkToU8('0' + (int32_t) (dec % 10)); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 107 | dec /= 10; |
| 108 | minDigits--; |
| 109 | } while (dec != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 110 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 111 | while (minDigits > 0) { |
| 112 | *--p = '0'; |
| 113 | minDigits--; |
| 114 | } |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 115 | |
| 116 | SkASSERT(p >= buffer); |
| 117 | size_t cp_len = buffer + sizeof(buffer) - p; |
| 118 | memcpy(string, p, cp_len); |
| 119 | string += cp_len; |
| 120 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 121 | SkASSERT(string - start <= SkStrAppendU64_MaxSize); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 122 | return string; |
| 123 | } |
| 124 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 125 | char* SkStrAppendS64(char string[], int64_t dec, int minDigits) { |
| 126 | if (dec < 0) { |
| 127 | *string++ = '-'; |
| 128 | dec = -dec; |
| 129 | } |
| 130 | return SkStrAppendU64(string, static_cast<uint64_t>(dec), minDigits); |
| 131 | } |
| 132 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 133 | char* SkStrAppendFloat(char string[], float value) { |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 134 | // since floats have at most 8 significant digits, we limit our %g to that. |
| 135 | static const char gFormat[] = "%.8g"; |
| 136 | // make it 1 larger for the terminating 0 |
| 137 | char buffer[SkStrAppendScalar_MaxSize + 1]; |
| 138 | int len = SNPRINTF(buffer, sizeof(buffer), gFormat, value); |
| 139 | memcpy(string, buffer, len); |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 140 | SkASSERT(len <= SkStrAppendScalar_MaxSize); |
reed@google.com | 8072e4f | 2011-03-01 15:44:08 +0000 | [diff] [blame] | 141 | return string + len; |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 142 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 143 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 144 | char* SkStrAppendFixed(char string[], SkFixed x) { |
vandebo@chromium.org | 677cbed | 2011-03-03 18:20:12 +0000 | [diff] [blame] | 145 | SkDEBUGCODE(char* start = string;) |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 146 | if (x < 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 147 | *string++ = '-'; |
| 148 | x = -x; |
| 149 | } |
| 150 | |
| 151 | unsigned frac = x & 0xFFFF; |
| 152 | x >>= 16; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 153 | if (frac == 0xFFFF) { |
| 154 | // need to do this to "round up", since 65535/65536 is closer to 1 than to .9999 |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 155 | x += 1; |
| 156 | frac = 0; |
| 157 | } |
| 158 | string = SkStrAppendS32(string, x); |
| 159 | |
| 160 | // now handle the fractional part (if any) |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 161 | if (frac) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 162 | static const uint16_t gTens[] = { 1000, 100, 10, 1 }; |
| 163 | const uint16_t* tens = gTens; |
| 164 | |
| 165 | x = SkFixedRound(frac * 10000); |
| 166 | SkASSERT(x <= 10000); |
| 167 | if (x == 10000) { |
| 168 | x -= 1; |
| 169 | } |
| 170 | *string++ = '.'; |
| 171 | do { |
| 172 | unsigned powerOfTen = *tens++; |
| 173 | *string++ = SkToU8('0' + x / powerOfTen); |
| 174 | x %= powerOfTen; |
| 175 | } while (x != 0); |
| 176 | } |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 177 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 178 | SkASSERT(string - start <= SkStrAppendScalar_MaxSize); |
| 179 | return string; |
| 180 | } |
| 181 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 182 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 183 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 184 | // the 3 values are [length] [refcnt] [terminating zero data] |
| 185 | const SkString::Rec SkString::gEmptyRec = { 0, 0, 0 }; |
| 186 | |
| 187 | #define SizeOfRec() (gEmptyRec.data() - (const char*)&gEmptyRec) |
| 188 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 189 | static uint32_t trim_size_t_to_u32(size_t value) { |
| 190 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 191 | if (value > SK_MaxU32) { |
| 192 | value = SK_MaxU32; |
| 193 | } |
| 194 | } |
| 195 | return (uint32_t)value; |
| 196 | } |
| 197 | |
| 198 | static size_t check_add32(size_t base, size_t extra) { |
| 199 | SkASSERT(base <= SK_MaxU32); |
| 200 | if (sizeof(size_t) > sizeof(uint32_t)) { |
| 201 | if (base + extra > SK_MaxU32) { |
| 202 | extra = SK_MaxU32 - base; |
| 203 | } |
| 204 | } |
| 205 | return extra; |
| 206 | } |
| 207 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 208 | SkString::Rec* SkString::AllocRec(const char text[], size_t len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 209 | Rec* rec; |
| 210 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 211 | if (0 == len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 212 | rec = const_cast<Rec*>(&gEmptyRec); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 213 | } else { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 214 | len = trim_size_t_to_u32(len); |
| 215 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 216 | // add 1 for terminating 0, then align4 so we can have some slop when growing the string |
| 217 | rec = (Rec*)sk_malloc_throw(SizeOfRec() + SkAlign4(len + 1)); |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 218 | rec->fLength = SkToU32(len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 219 | rec->fRefCnt = 1; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 220 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 221 | memcpy(rec->data(), text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 222 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 223 | rec->data()[len] = 0; |
| 224 | } |
| 225 | return rec; |
| 226 | } |
| 227 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 228 | SkString::Rec* SkString::RefRec(Rec* src) { |
| 229 | if (src != &gEmptyRec) { |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 230 | sk_atomic_inc(&src->fRefCnt); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 231 | } |
| 232 | return src; |
| 233 | } |
| 234 | |
| 235 | #ifdef SK_DEBUG |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 236 | void SkString::validate() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 237 | // make sure know one has written over our global |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 238 | SkASSERT(0 == gEmptyRec.fLength); |
| 239 | SkASSERT(0 == gEmptyRec.fRefCnt); |
| 240 | SkASSERT(0 == gEmptyRec.data()[0]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 241 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 242 | if (fRec != &gEmptyRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 243 | SkASSERT(fRec->fLength > 0); |
| 244 | SkASSERT(fRec->fRefCnt > 0); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 245 | SkASSERT(0 == fRec->data()[fRec->fLength]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 246 | } |
| 247 | SkASSERT(fStr == c_str()); |
| 248 | } |
| 249 | #endif |
| 250 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 251 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 252 | |
| 253 | SkString::SkString() : fRec(const_cast<Rec*>(&gEmptyRec)) { |
| 254 | #ifdef SK_DEBUG |
| 255 | fStr = fRec->data(); |
| 256 | #endif |
| 257 | } |
| 258 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 259 | SkString::SkString(size_t len) { |
bsalomon@google.com | 8686be2 | 2013-05-13 18:48:40 +0000 | [diff] [blame] | 260 | fRec = AllocRec(NULL, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 261 | #ifdef SK_DEBUG |
| 262 | fStr = fRec->data(); |
| 263 | #endif |
| 264 | } |
| 265 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 266 | SkString::SkString(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 267 | size_t len = text ? strlen(text) : 0; |
| 268 | |
bsalomon@google.com | 8686be2 | 2013-05-13 18:48:40 +0000 | [diff] [blame] | 269 | fRec = AllocRec(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 270 | #ifdef SK_DEBUG |
| 271 | fStr = fRec->data(); |
| 272 | #endif |
| 273 | } |
| 274 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 275 | SkString::SkString(const char text[], size_t len) { |
bsalomon@google.com | 8686be2 | 2013-05-13 18:48:40 +0000 | [diff] [blame] | 276 | fRec = AllocRec(text, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 277 | #ifdef SK_DEBUG |
| 278 | fStr = fRec->data(); |
| 279 | #endif |
| 280 | } |
| 281 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 282 | SkString::SkString(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 283 | src.validate(); |
| 284 | |
| 285 | fRec = RefRec(src.fRec); |
| 286 | #ifdef SK_DEBUG |
| 287 | fStr = fRec->data(); |
| 288 | #endif |
| 289 | } |
| 290 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 291 | SkString::~SkString() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 292 | this->validate(); |
| 293 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 294 | if (fRec->fLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 295 | SkASSERT(fRec->fRefCnt > 0); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 296 | if (sk_atomic_dec(&fRec->fRefCnt) == 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 297 | sk_free(fRec); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 298 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 299 | } |
| 300 | } |
| 301 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 302 | bool SkString::equals(const SkString& src) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 303 | return fRec == src.fRec || this->equals(src.c_str(), src.size()); |
| 304 | } |
| 305 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 306 | bool SkString::equals(const char text[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 307 | return this->equals(text, text ? strlen(text) : 0); |
| 308 | } |
| 309 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 310 | bool SkString::equals(const char text[], size_t len) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 311 | SkASSERT(len == 0 || text != NULL); |
| 312 | |
| 313 | return fRec->fLength == len && !memcmp(fRec->data(), text, len); |
| 314 | } |
| 315 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 316 | SkString& SkString::operator=(const SkString& src) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | this->validate(); |
| 318 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 319 | if (fRec != src.fRec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 320 | SkString tmp(src); |
| 321 | this->swap(tmp); |
| 322 | } |
| 323 | return *this; |
| 324 | } |
| 325 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 326 | SkString& SkString::operator=(const char text[]) { |
| 327 | this->validate(); |
| 328 | |
| 329 | SkString tmp(text); |
| 330 | this->swap(tmp); |
| 331 | |
| 332 | return *this; |
| 333 | } |
| 334 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 335 | void SkString::reset() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 336 | this->validate(); |
| 337 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 338 | if (fRec->fLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 339 | SkASSERT(fRec->fRefCnt > 0); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 340 | if (sk_atomic_dec(&fRec->fRefCnt) == 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 341 | sk_free(fRec); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 342 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | fRec = const_cast<Rec*>(&gEmptyRec); |
| 346 | #ifdef SK_DEBUG |
| 347 | fStr = fRec->data(); |
| 348 | #endif |
| 349 | } |
| 350 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 351 | char* SkString::writable_str() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 352 | this->validate(); |
| 353 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 354 | if (fRec->fLength) { |
| 355 | if (fRec->fRefCnt > 1) { |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 356 | Rec* rec = AllocRec(fRec->data(), fRec->fLength); |
| 357 | if (sk_atomic_dec(&fRec->fRefCnt) == 1) { |
| 358 | // In this case after our check of fRecCnt > 1, we suddenly |
| 359 | // did become the only owner, so now we have two copies of the |
| 360 | // data (fRec and rec), so we need to delete one of them. |
| 361 | sk_free(fRec); |
| 362 | } |
| 363 | fRec = rec; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 364 | #ifdef SK_DEBUG |
| 365 | fStr = fRec->data(); |
| 366 | #endif |
| 367 | } |
| 368 | } |
| 369 | return fRec->data(); |
| 370 | } |
| 371 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 372 | void SkString::set(const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 373 | this->set(text, text ? strlen(text) : 0); |
| 374 | } |
| 375 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 376 | void SkString::set(const char text[], size_t len) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 377 | len = trim_size_t_to_u32(len); |
| 378 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 379 | if (0 == len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 380 | this->reset(); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 381 | } else if (1 == fRec->fRefCnt && len <= fRec->fLength) { |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 382 | // 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] | 383 | // just use less of the buffer without allocating a smaller one |
| 384 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 385 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 386 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 387 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 388 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 389 | fRec->fLength = SkToU32(len); |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 390 | } else if (1 == fRec->fRefCnt && (fRec->fLength >> 2) == (len >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 391 | // we have spare room in the current allocation, so don't alloc a larger one |
| 392 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 393 | if (text) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 394 | memcpy(p, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 395 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 396 | p[len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 397 | fRec->fLength = SkToU32(len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 398 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 399 | SkString tmp(text, len); |
| 400 | this->swap(tmp); |
| 401 | } |
| 402 | } |
| 403 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 404 | void SkString::setUTF16(const uint16_t src[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 405 | int count = 0; |
| 406 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 407 | while (src[count]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 408 | count += 1; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 409 | } |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 410 | this->setUTF16(src, count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 411 | } |
| 412 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 413 | void SkString::setUTF16(const uint16_t src[], size_t count) { |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 414 | count = trim_size_t_to_u32(count); |
| 415 | |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 416 | if (0 == count) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 417 | this->reset(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 418 | } else if (count <= fRec->fLength) { |
| 419 | // should we resize if len <<<< fLength, to save RAM? (e.g. len < (fLength>>1)) |
| 420 | if (count < fRec->fLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 421 | this->resize(count); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 422 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 423 | char* p = this->writable_str(); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 424 | for (size_t i = 0; i < count; i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 425 | p[i] = SkToU8(src[i]); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 426 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 427 | p[count] = 0; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 428 | } else { |
| 429 | SkString tmp(count); // puts a null terminator at the end of the string |
| 430 | char* p = tmp.writable_str(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 431 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 432 | for (size_t i = 0; i < count; i++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 433 | p[i] = SkToU8(src[i]); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 434 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 435 | this->swap(tmp); |
| 436 | } |
| 437 | } |
| 438 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 439 | void SkString::insert(size_t offset, const char text[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 440 | this->insert(offset, text, text ? strlen(text) : 0); |
| 441 | } |
| 442 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 443 | void SkString::insert(size_t offset, const char text[], size_t len) { |
| 444 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 445 | size_t length = fRec->fLength; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 446 | if (offset > length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 447 | offset = length; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 448 | } |
skia.committer@gmail.com | 8f6ef40 | 2013-06-05 07:01:06 +0000 | [diff] [blame] | 449 | |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 450 | // Check if length + len exceeds 32bits, we trim len |
| 451 | len = check_add32(length, len); |
| 452 | if (0 == len) { |
| 453 | return; |
| 454 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 455 | |
| 456 | /* If we're the only owner, and we have room in our allocation for the insert, |
| 457 | do it in place, rather than allocating a new buffer. |
| 458 | |
| 459 | To know we have room, compare the allocated sizes |
| 460 | beforeAlloc = SkAlign4(length + 1) |
| 461 | afterAlloc = SkAligh4(length + 1 + len) |
| 462 | but SkAlign4(x) is (x + 3) >> 2 << 2 |
| 463 | which is equivalent for testing to (length + 1 + 3) >> 2 == (length + 1 + 3 + len) >> 2 |
| 464 | and we can then eliminate the +1+3 since that doesn't affec the answer |
| 465 | */ |
reed@google.com | 4bce115 | 2011-09-14 16:13:58 +0000 | [diff] [blame] | 466 | if (1 == fRec->fRefCnt && (length >> 2) == ((length + len) >> 2)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 467 | char* dst = this->writable_str(); |
| 468 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 469 | if (offset < length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 470 | memmove(dst + offset + len, dst + offset, length - offset); |
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 | memcpy(dst + offset, text, len); |
| 473 | |
| 474 | dst[length + len] = 0; |
reed@google.com | 8cb1088 | 2013-06-04 20:36:52 +0000 | [diff] [blame] | 475 | fRec->fLength = SkToU32(length + len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 476 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 477 | /* Seems we should use realloc here, since that is safe if it fails |
| 478 | (we have the original data), and might be faster than alloc/copy/free. |
| 479 | */ |
| 480 | SkString tmp(fRec->fLength + len); |
| 481 | char* dst = tmp.writable_str(); |
| 482 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 483 | if (offset > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 484 | memcpy(dst, fRec->data(), offset); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 485 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 486 | memcpy(dst + offset, text, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 487 | if (offset < fRec->fLength) { |
| 488 | memcpy(dst + offset + len, fRec->data() + offset, |
| 489 | fRec->fLength - offset); |
| 490 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 491 | |
| 492 | this->swap(tmp); |
| 493 | } |
| 494 | } |
| 495 | } |
| 496 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 497 | void SkString::insertUnichar(size_t offset, SkUnichar uni) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 498 | char buffer[kMaxBytesInUTF8Sequence]; |
| 499 | size_t len = SkUTF8_FromUnichar(uni, buffer); |
| 500 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 501 | if (len) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 502 | this->insert(offset, buffer, len); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 503 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 504 | } |
| 505 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 506 | void SkString::insertS32(size_t offset, int32_t dec) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 507 | char buffer[SkStrAppendS32_MaxSize]; |
| 508 | char* stop = SkStrAppendS32(buffer, dec); |
| 509 | this->insert(offset, buffer, stop - buffer); |
| 510 | } |
| 511 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 512 | void SkString::insertS64(size_t offset, int64_t dec, int minDigits) { |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 513 | char buffer[SkStrAppendS64_MaxSize]; |
| 514 | char* stop = SkStrAppendS64(buffer, dec, minDigits); |
| 515 | this->insert(offset, buffer, stop - buffer); |
| 516 | } |
| 517 | |
epoger@google.com | d88a3d8 | 2013-06-19 18:27:20 +0000 | [diff] [blame] | 518 | void SkString::insertU32(size_t offset, uint32_t dec) { |
| 519 | char buffer[SkStrAppendU32_MaxSize]; |
| 520 | char* stop = SkStrAppendU32(buffer, dec); |
| 521 | this->insert(offset, buffer, stop - buffer); |
| 522 | } |
| 523 | |
| 524 | void SkString::insertU64(size_t offset, uint64_t dec, int minDigits) { |
| 525 | char buffer[SkStrAppendU64_MaxSize]; |
| 526 | char* stop = SkStrAppendU64(buffer, dec, minDigits); |
| 527 | this->insert(offset, buffer, stop - buffer); |
| 528 | } |
| 529 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 530 | void SkString::insertHex(size_t offset, uint32_t hex, int minDigits) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 531 | minDigits = SkPin32(minDigits, 0, 8); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 532 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 533 | static const char gHex[] = "0123456789ABCDEF"; |
| 534 | |
| 535 | char buffer[8]; |
| 536 | char* p = buffer + sizeof(buffer); |
| 537 | |
| 538 | do { |
| 539 | *--p = gHex[hex & 0xF]; |
| 540 | hex >>= 4; |
| 541 | minDigits -= 1; |
| 542 | } while (hex != 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 543 | |
| 544 | while (--minDigits >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 545 | *--p = '0'; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 546 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 547 | |
| 548 | SkASSERT(p >= buffer); |
| 549 | this->insert(offset, p, buffer + sizeof(buffer) - p); |
| 550 | } |
| 551 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 552 | void SkString::insertScalar(size_t offset, SkScalar value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 553 | char buffer[SkStrAppendScalar_MaxSize]; |
| 554 | char* stop = SkStrAppendScalar(buffer, value); |
| 555 | this->insert(offset, buffer, stop - buffer); |
| 556 | } |
| 557 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 558 | void SkString::printf(const char format[], ...) { |
| 559 | char buffer[kBufferSize]; |
| 560 | ARGS_TO_BUFFER(format, buffer, kBufferSize); |
| 561 | |
| 562 | this->set(buffer, strlen(buffer)); |
| 563 | } |
| 564 | |
| 565 | void SkString::appendf(const char format[], ...) { |
| 566 | char buffer[kBufferSize]; |
| 567 | ARGS_TO_BUFFER(format, buffer, kBufferSize); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 568 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 569 | this->append(buffer, strlen(buffer)); |
| 570 | } |
| 571 | |
commit-bot@chromium.org | ce0e4ef | 2013-11-21 17:20:17 +0000 | [diff] [blame] | 572 | void SkString::appendVAList(const char format[], va_list args) { |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 573 | char buffer[kBufferSize]; |
| 574 | VSNPRINTF(buffer, kBufferSize, format, args); |
| 575 | |
| 576 | this->append(buffer, strlen(buffer)); |
| 577 | } |
| 578 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 579 | void SkString::prependf(const char format[], ...) { |
| 580 | char buffer[kBufferSize]; |
| 581 | ARGS_TO_BUFFER(format, buffer, kBufferSize); |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 582 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 583 | this->prepend(buffer, strlen(buffer)); |
| 584 | } |
| 585 | |
reed@google.com | fa06e52 | 2011-02-28 21:29:58 +0000 | [diff] [blame] | 586 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 587 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 588 | void SkString::remove(size_t offset, size_t length) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 589 | size_t size = this->size(); |
| 590 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 591 | if (offset < size) { |
| 592 | if (offset + length > size) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 593 | length = size - offset; |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 594 | } |
| 595 | if (length > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 596 | SkASSERT(size > length); |
| 597 | SkString tmp(size - length); |
| 598 | char* dst = tmp.writable_str(); |
| 599 | const char* src = this->c_str(); |
| 600 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 601 | if (offset) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 602 | SkASSERT(offset <= tmp.size()); |
| 603 | memcpy(dst, src, offset); |
| 604 | } |
| 605 | size_t tail = size - offset - length; |
| 606 | SkASSERT((int32_t)tail >= 0); |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 607 | if (tail) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 608 | // SkASSERT(offset + length <= tmp.size()); |
| 609 | memcpy(dst + offset, src + offset + length, tail); |
| 610 | } |
| 611 | SkASSERT(dst[tmp.size()] == 0); |
| 612 | this->swap(tmp); |
| 613 | } |
| 614 | } |
| 615 | } |
| 616 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 617 | void SkString::swap(SkString& other) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 618 | this->validate(); |
| 619 | other.validate(); |
| 620 | |
| 621 | SkTSwap<Rec*>(fRec, other.fRec); |
| 622 | #ifdef SK_DEBUG |
| 623 | SkTSwap<const char*>(fStr, other.fStr); |
| 624 | #endif |
| 625 | } |
| 626 | |
mike@reedtribe.org | 4e1d3ac | 2011-04-10 01:04:37 +0000 | [diff] [blame] | 627 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 628 | |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 629 | SkString SkStringPrintf(const char* format, ...) { |
| 630 | SkString formattedOutput; |
| 631 | char buffer[kBufferSize]; |
| 632 | ARGS_TO_BUFFER(format, buffer, kBufferSize); |
| 633 | formattedOutput.set(buffer); |
| 634 | return formattedOutput; |
| 635 | } |
| 636 | |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame^] | 637 | void SkStrSplit(const char* str, const char* delimiters, SkTArray<SkString>* out) { |
| 638 | const char* end = str + strlen(str); |
| 639 | while (str != end) { |
| 640 | // Find a token. |
| 641 | const size_t len = strcspn(str, delimiters); |
| 642 | out->push_back().set(str, len); |
| 643 | str += len; |
| 644 | // Skip any delimiters. |
| 645 | str += strspn(str, delimiters); |
| 646 | } |
| 647 | } |
| 648 | |
tomhudson@google.com | 3a1f6a0 | 2011-06-30 14:39:52 +0000 | [diff] [blame] | 649 | #undef VSNPRINTF |
tomhudson@google.com | 47e0a09 | 2011-07-08 17:49:22 +0000 | [diff] [blame] | 650 | #undef SNPRINTF |