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Issue 256753002: Merge v8utils.* and utils.* (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 7 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 #include <stdarg.h>
29
30 #include "v8.h"
31
32 #include "platform.h"
33
34 #include "sys/stat.h"
35
36 namespace v8 {
37 namespace internal {
38
39
40 void PrintF(const char* format, ...) {
41 va_list arguments;
42 va_start(arguments, format);
43 OS::VPrint(format, arguments);
44 va_end(arguments);
45 }
46
47
48 void PrintF(FILE* out, const char* format, ...) {
49 va_list arguments;
50 va_start(arguments, format);
51 OS::VFPrint(out, format, arguments);
52 va_end(arguments);
53 }
54
55
56 void PrintPID(const char* format, ...) {
57 OS::Print("[%d] ", OS::GetCurrentProcessId());
58 va_list arguments;
59 va_start(arguments, format);
60 OS::VPrint(format, arguments);
61 va_end(arguments);
62 }
63
64
65 void Flush(FILE* out) {
66 fflush(out);
67 }
68
69
70 char* ReadLine(const char* prompt) {
71 char* result = NULL;
72 char line_buf[256];
73 int offset = 0;
74 bool keep_going = true;
75 fprintf(stdout, "%s", prompt);
76 fflush(stdout);
77 while (keep_going) {
78 if (fgets(line_buf, sizeof(line_buf), stdin) == NULL) {
79 // fgets got an error. Just give up.
80 if (result != NULL) {
81 DeleteArray(result);
82 }
83 return NULL;
84 }
85 int len = StrLength(line_buf);
86 if (len > 1 &&
87 line_buf[len - 2] == '\\' &&
88 line_buf[len - 1] == '\n') {
89 // When we read a line that ends with a "\" we remove the escape and
90 // append the remainder.
91 line_buf[len - 2] = '\n';
92 line_buf[len - 1] = 0;
93 len -= 1;
94 } else if ((len > 0) && (line_buf[len - 1] == '\n')) {
95 // Since we read a new line we are done reading the line. This
96 // will exit the loop after copying this buffer into the result.
97 keep_going = false;
98 }
99 if (result == NULL) {
100 // Allocate the initial result and make room for the terminating '\0'
101 result = NewArray<char>(len + 1);
102 } else {
103 // Allocate a new result with enough room for the new addition.
104 int new_len = offset + len + 1;
105 char* new_result = NewArray<char>(new_len);
106 // Copy the existing input into the new array and set the new
107 // array as the result.
108 OS::MemCopy(new_result, result, offset * kCharSize);
109 DeleteArray(result);
110 result = new_result;
111 }
112 // Copy the newly read line into the result.
113 OS::MemCopy(result + offset, line_buf, len * kCharSize);
114 offset += len;
115 }
116 ASSERT(result != NULL);
117 result[offset] = '\0';
118 return result;
119 }
120
121
122 char* ReadCharsFromFile(FILE* file,
123 int* size,
124 int extra_space,
125 bool verbose,
126 const char* filename) {
127 if (file == NULL || fseek(file, 0, SEEK_END) != 0) {
128 if (verbose) {
129 OS::PrintError("Cannot read from file %s.\n", filename);
130 }
131 return NULL;
132 }
133
134 // Get the size of the file and rewind it.
135 *size = ftell(file);
136 rewind(file);
137
138 char* result = NewArray<char>(*size + extra_space);
139 for (int i = 0; i < *size && feof(file) == 0;) {
140 int read = static_cast<int>(fread(&result[i], 1, *size - i, file));
141 if (read != (*size - i) && ferror(file) != 0) {
142 fclose(file);
143 DeleteArray(result);
144 return NULL;
145 }
146 i += read;
147 }
148 return result;
149 }
150
151
152 char* ReadCharsFromFile(const char* filename,
153 int* size,
154 int extra_space,
155 bool verbose) {
156 FILE* file = OS::FOpen(filename, "rb");
157 char* result = ReadCharsFromFile(file, size, extra_space, verbose, filename);
158 if (file != NULL) fclose(file);
159 return result;
160 }
161
162
163 byte* ReadBytes(const char* filename, int* size, bool verbose) {
164 char* chars = ReadCharsFromFile(filename, size, 0, verbose);
165 return reinterpret_cast<byte*>(chars);
166 }
167
168
169 static Vector<const char> SetVectorContents(char* chars,
170 int size,
171 bool* exists) {
172 if (!chars) {
173 *exists = false;
174 return Vector<const char>::empty();
175 }
176 chars[size] = '\0';
177 *exists = true;
178 return Vector<const char>(chars, size);
179 }
180
181
182 Vector<const char> ReadFile(const char* filename,
183 bool* exists,
184 bool verbose) {
185 int size;
186 char* result = ReadCharsFromFile(filename, &size, 1, verbose);
187 return SetVectorContents(result, size, exists);
188 }
189
190
191 Vector<const char> ReadFile(FILE* file,
192 bool* exists,
193 bool verbose) {
194 int size;
195 char* result = ReadCharsFromFile(file, &size, 1, verbose, "");
196 return SetVectorContents(result, size, exists);
197 }
198
199
200 int WriteCharsToFile(const char* str, int size, FILE* f) {
201 int total = 0;
202 while (total < size) {
203 int write = static_cast<int>(fwrite(str, 1, size - total, f));
204 if (write == 0) {
205 return total;
206 }
207 total += write;
208 str += write;
209 }
210 return total;
211 }
212
213
214 int AppendChars(const char* filename,
215 const char* str,
216 int size,
217 bool verbose) {
218 FILE* f = OS::FOpen(filename, "ab");
219 if (f == NULL) {
220 if (verbose) {
221 OS::PrintError("Cannot open file %s for writing.\n", filename);
222 }
223 return 0;
224 }
225 int written = WriteCharsToFile(str, size, f);
226 fclose(f);
227 return written;
228 }
229
230
231 int WriteChars(const char* filename,
232 const char* str,
233 int size,
234 bool verbose) {
235 FILE* f = OS::FOpen(filename, "wb");
236 if (f == NULL) {
237 if (verbose) {
238 OS::PrintError("Cannot open file %s for writing.\n", filename);
239 }
240 return 0;
241 }
242 int written = WriteCharsToFile(str, size, f);
243 fclose(f);
244 return written;
245 }
246
247
248 int WriteBytes(const char* filename,
249 const byte* bytes,
250 int size,
251 bool verbose) {
252 const char* str = reinterpret_cast<const char*>(bytes);
253 return WriteChars(filename, str, size, verbose);
254 }
255
256
257
258 void StringBuilder::AddFormatted(const char* format, ...) {
259 va_list arguments;
260 va_start(arguments, format);
261 AddFormattedList(format, arguments);
262 va_end(arguments);
263 }
264
265
266 void StringBuilder::AddFormattedList(const char* format, va_list list) {
267 ASSERT(!is_finalized() && position_ <= buffer_.length());
268 int n = OS::VSNPrintF(buffer_ + position_, format, list);
269 if (n < 0 || n >= (buffer_.length() - position_)) {
270 position_ = buffer_.length();
271 } else {
272 position_ += n;
273 }
274 }
275
276 } } // namespace v8::internal
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