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1 | /* Copyright (c) 2004-2005 Nokia. All rights reserved. */ |
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2 | |
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3 | /* The CPerlBase class is licensed under the same terms as Perl itself. */ |
4 | |
5 | /* See PerlBase.pod for documentation. */ |
6 | |
7 | #define PERLBASE_CPP |
8 | |
9 | #include <e32cons.h> |
10 | #include <e32keys.h> |
11 | #include <utf.h> |
12 | |
13 | #include "PerlBase.h" |
14 | |
15 | const TUint KPerlConsoleBufferMaxTChars = 0x0200; |
16 | const TUint KPerlConsoleNoPos = 0xffff; |
17 | |
18 | CPerlBase::CPerlBase() |
19 | { |
20 | } |
21 | |
22 | EXPORT_C void CPerlBase::Destruct() |
23 | { |
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24 | dTHX; |
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25 | iState = EPerlDestroying; |
26 | if (iConsole) { |
27 | iConsole->Printf(_L("[Any key to continue]")); |
28 | iConsole->Getch(); |
29 | } |
30 | if (iPerl) { |
31 | (void)perl_destruct(iPerl); |
32 | perl_free(iPerl); |
33 | iPerl = NULL; |
34 | PERL_SYS_TERM(); |
35 | } |
36 | if (iConsole) { |
37 | delete iConsole; |
38 | iConsole = NULL; |
39 | } |
40 | if (iConsoleBuffer) { |
41 | free(iConsoleBuffer); |
42 | iConsoleBuffer = NULL; |
43 | } |
44 | #ifdef PERL_GLOBAL_STRUCT |
45 | if (iVars) { |
46 | PerlInterpreter* my_perl = NULL; |
47 | free_global_struct(iVars); |
48 | iVars = NULL; |
49 | } |
50 | #endif |
51 | } |
52 | |
53 | CPerlBase::~CPerlBase() |
54 | { |
55 | Destruct(); |
56 | } |
57 | |
58 | EXPORT_C CPerlBase* CPerlBase::NewInterpreterL(TBool aCloseStdlib, |
59 | void (*aStdioInitFunc)(void*), |
60 | void *aStdioInitCookie) |
61 | { |
62 | CPerlBase* self = |
63 | CPerlBase::NewInterpreterLC(aCloseStdlib, |
64 | aStdioInitFunc, |
65 | aStdioInitCookie); |
66 | CleanupStack::Pop(self); |
67 | return self; |
68 | } |
69 | |
70 | EXPORT_C CPerlBase* CPerlBase::NewInterpreterLC(TBool aCloseStdlib, |
71 | void (*aStdioInitFunc)(void*), |
72 | void *aStdioInitCookie) |
73 | { |
74 | CPerlBase* self = new (ELeave) CPerlBase; |
75 | CleanupStack::PushL(self); |
76 | self->iCloseStdlib = aCloseStdlib; |
77 | self->iStdioInitFunc = aStdioInitFunc; |
78 | self->iStdioInitCookie = aStdioInitCookie; |
79 | self->ConstructL(); |
80 | PERL_APPCTX_SET(self); |
81 | return self; |
82 | } |
83 | |
84 | static int _console_stdin(void* cookie, char* buf, int n) |
85 | { |
86 | return ((CPerlBase*)cookie)->ConsoleRead(0, buf, n); |
87 | } |
88 | |
89 | static int _console_stdout(void* cookie, const char* buf, int n) |
90 | { |
91 | return ((CPerlBase*)cookie)->ConsoleWrite(1, buf, n); |
92 | } |
93 | |
94 | static int _console_stderr(void* cookie, const char* buf, int n) |
95 | { |
96 | return ((CPerlBase*)cookie)->ConsoleWrite(2, buf, n); |
97 | } |
98 | |
99 | void CPerlBase::StdioRewire(void *arg) { |
100 | _REENT->_sf[0]._cookie = (void*)this; |
101 | _REENT->_sf[0]._read = &_console_stdin; |
102 | _REENT->_sf[0]._write = 0; |
103 | _REENT->_sf[0]._seek = 0; |
104 | _REENT->_sf[0]._close = 0; |
105 | |
106 | _REENT->_sf[1]._cookie = (void*)this; |
107 | _REENT->_sf[1]._read = 0; |
108 | _REENT->_sf[1]._write = &_console_stdout; |
109 | _REENT->_sf[1]._seek = 0; |
110 | _REENT->_sf[1]._close = 0; |
111 | |
112 | _REENT->_sf[2]._cookie = (void*)this; |
113 | _REENT->_sf[2]._read = 0; |
114 | _REENT->_sf[2]._write = &_console_stderr; |
115 | _REENT->_sf[2]._seek = 0; |
116 | _REENT->_sf[2]._close = 0; |
117 | } |
118 | |
119 | void CPerlBase::ConstructL() |
120 | { |
121 | iState = EPerlNone; |
122 | #ifdef PERL_GLOBAL_STRUCT |
123 | PerlInterpreter *my_perl = 0; |
124 | iVars = init_global_struct(); |
125 | User::LeaveIfNull(iVars); |
126 | #endif |
127 | iPerl = perl_alloc(); |
128 | User::LeaveIfNull(iPerl); |
129 | iState = EPerlAllocated; |
130 | perl_construct(iPerl); // returns void |
131 | if (!iStdioInitFunc) { |
132 | iConsole = |
133 | Console::NewL(_L("Perl Console"), |
134 | TSize(KConsFullScreen, KConsFullScreen)); |
135 | iConsoleBuffer = |
136 | (TUint16*)malloc(sizeof(TUint) * |
137 | KPerlConsoleBufferMaxTChars); |
138 | User::LeaveIfNull(iConsoleBuffer); |
139 | iConsoleUsed = 0; |
140 | #ifndef USE_PERLIO |
141 | iStdioInitFunc = &StdioRewire; |
142 | #endif |
143 | } |
144 | if (iStdioInitFunc) |
145 | iStdioInitFunc(iStdioInitCookie); |
146 | iReadFunc = NULL; |
147 | iWriteFunc = NULL; |
148 | iState = EPerlConstructed; |
149 | } |
150 | |
151 | EXPORT_C PerlInterpreter* CPerlBase::GetInterpreter() |
152 | { |
153 | return (PerlInterpreter*) iPerl; |
154 | } |
155 | |
156 | #ifdef PERL_MINIPERL |
157 | static void boot_DynaLoader(pTHX_ CV* cv) { } |
158 | #else |
159 | EXTERN_C void boot_DynaLoader(pTHX_ CV* cv); |
160 | #endif |
161 | |
162 | static void xs_init(pTHX) |
163 | { |
164 | dXSUB_SYS; |
165 | newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, __FILE__); |
166 | } |
167 | |
168 | EXPORT_C TInt CPerlBase::RunScriptL(const TDesC& aFileName, |
169 | int argc, |
170 | char **argv, |
171 | char *envp[]) { |
172 | TBuf8<KMaxFileName> scriptUtf8; |
173 | TInt error; |
174 | error = CnvUtfConverter::ConvertFromUnicodeToUtf8(scriptUtf8, aFileName); |
175 | User::LeaveIfError(error); |
176 | char *filename = (char*)scriptUtf8.PtrZ(); |
177 | struct stat st; |
178 | if (stat(filename, &st) == -1) |
179 | return KErrNotFound; |
180 | if (argc < 2) |
181 | return KErrGeneral; /* Anything better? */ |
182 | char **Argv = (char**)malloc(argc * sizeof(char*)); |
183 | User::LeaveIfNull(Argv); |
184 | TCleanupItem ArgvCleanupItem = TCleanupItem(free, Argv); |
185 | CleanupStack::PushL(ArgvCleanupItem); |
186 | Argv[0] = "perl"; |
187 | if (argv && argc > 2) |
188 | for (int i = 2; i < argc - 1; i++) |
189 | Argv[i] = argv[i]; |
190 | Argv[argc - 1] = filename; |
191 | error = this->ParseAndRun(argc, Argv, envp); |
192 | CleanupStack::PopAndDestroy(Argv); |
193 | Argv = 0; |
194 | return error == 0 ? KErrNone : KErrGeneral; |
195 | } |
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196 | |
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197 | |
198 | EXPORT_C int CPerlBase::Parse(int argc, char *argv[], char *envp[]) |
199 | { |
200 | if (iState == EPerlConstructed) { |
201 | const char* const NullArgv[] = { "perl", "-e", "0" }; |
202 | if (argc == 0 || argv == 0) { |
203 | argc = 3; |
204 | argv = (char**) NullArgv; |
205 | } |
206 | PERL_SYS_INIT(&argc, &argv); |
207 | int parsed = perl_parse(iPerl, xs_init, argc, argv, envp); |
208 | if (parsed == 0) |
209 | iState = EPerlParsed; |
210 | return parsed; |
211 | } else |
212 | return -1; |
213 | } |
214 | |
215 | EXPORT_C void CPerlBase::SetupExit() |
216 | { |
217 | if (iState == EPerlParsed) { |
218 | diTHX; |
219 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
220 | // PL_perl_destruct level of 2 would be nice but |
221 | // it causes "Unbalanced scopes" for some reason. |
222 | PL_perl_destruct_level = 1; |
223 | } |
224 | } |
225 | |
226 | EXPORT_C int CPerlBase::Run() |
227 | { |
228 | if (iState == EPerlParsed) { |
229 | SetupExit(); |
230 | iState = EPerlRunning; |
231 | int ran = perl_run(iPerl); |
232 | iState = (ran == 0) ? EPerlSuccess : EPerlFailure; |
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233 | return ran; |
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234 | } else |
235 | return -1; |
236 | } |
237 | |
238 | EXPORT_C int CPerlBase::ParseAndRun(int argc, char *argv[], char *envp[]) |
239 | { |
240 | int parsed = Parse(argc, argv, envp); |
241 | int ran = (parsed == 0) ? Run() : -1; |
242 | return ran; |
243 | } |
244 | |
245 | int CPerlBase::ConsoleReadLine() |
246 | { |
247 | if (!iConsole) |
248 | return -EIO; |
249 | |
250 | TUint currX = KPerlConsoleNoPos; |
251 | TUint currY = KPerlConsoleNoPos; |
252 | TUint prevX = KPerlConsoleNoPos; |
253 | TUint prevY = KPerlConsoleNoPos; |
254 | TUint maxX = KPerlConsoleNoPos; |
255 | TUint offset = 0; |
256 | |
257 | for (;;) { |
258 | TKeyCode code = iConsole->Getch(); |
259 | |
260 | if (code == EKeyLineFeed || code == EKeyEnter) { |
261 | if (offset < KPerlConsoleBufferMaxTChars) { |
262 | iConsoleBuffer[offset++] = '\n'; |
263 | iConsole->Printf(_L("\n")); |
264 | iConsoleBuffer[offset++] = 0; |
265 | } |
266 | break; |
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267 | } |
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268 | else { |
269 | TBool doBackward = EFalse; |
270 | TBool doBackspace = EFalse; |
271 | |
272 | prevX = currX; |
273 | prevY = currY; |
274 | if (code == EKeyBackspace) { |
275 | if (offset > 0) { |
276 | iConsoleBuffer[--offset] = 0; |
277 | doBackward = ETrue; |
278 | doBackspace = ETrue; |
279 | } |
280 | } |
281 | else if (offset < KPerlConsoleBufferMaxTChars) { |
282 | TChar ch = TChar(code); |
283 | |
284 | if (ch.IsPrint()) { |
285 | iConsoleBuffer[offset++] = (unsigned short)code; |
286 | iConsole->Printf(_L("%c"), code); |
287 | } |
288 | } |
289 | currX = iConsole->WhereX(); |
290 | currY = iConsole->WhereY(); |
291 | if (maxX == KPerlConsoleNoPos && prevX != KPerlConsoleNoPos && |
292 | prevY != KPerlConsoleNoPos && currY == prevY + 1) |
293 | maxX = prevX; |
294 | if (doBackward) { |
295 | if (currX > 0) |
296 | iConsole->SetPos(currX - 1); |
297 | else if (currY > 0) |
298 | iConsole->SetPos(maxX, currY - 1); |
299 | if (doBackspace) { |
300 | TUint nowX = iConsole->WhereX(); |
301 | TUint nowY = iConsole->WhereY(); |
302 | iConsole->Printf(_L(" ")); /* scrub */ |
303 | iConsole->SetPos(nowX, nowY); |
304 | } |
305 | } |
306 | } |
307 | } |
308 | |
309 | return offset; |
310 | } |
311 | |
312 | int CPerlBase::ConsoleRead(const int fd, char* buf, int n) |
313 | { |
314 | if (iReadFunc) |
315 | return iReadFunc(fd, buf, n); |
316 | |
317 | if (!iConsole) { |
318 | errno = EIO; |
319 | return -1; |
320 | } |
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321 | |
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322 | if (n < 0) { |
323 | errno = EINVAL; |
324 | return -1; |
325 | } |
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326 | |
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327 | if (n == 0) |
328 | return 0; |
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329 | |
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330 | TBuf8<4 * KPerlConsoleBufferMaxTChars> aBufferUtf8; |
331 | TBuf16<KPerlConsoleBufferMaxTChars> aBufferUtf16; |
332 | int length = ConsoleReadLine(); |
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333 | int i; |
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334 | |
335 | iConsoleUsed += length; |
336 | |
337 | aBufferUtf16.SetLength(length); |
338 | for (i = 0; i < length; i++) |
339 | aBufferUtf16[i] = iConsoleBuffer[i]; |
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340 | aBufferUtf8.SetLength(4 * length); |
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341 | |
342 | CnvUtfConverter::ConvertFromUnicodeToUtf8(aBufferUtf8, aBufferUtf16); |
343 | |
344 | char *pUtf8 = (char*)aBufferUtf8.PtrZ(); |
345 | int nUtf8 = aBufferUtf8.Size(); |
346 | if (nUtf8 > n) |
347 | nUtf8 = n; /* Potential data loss. */ |
348 | #ifdef PERL_SYMBIAN_CONSOLE_UTF8 |
349 | for (i = 0; i < nUtf8; i++) |
350 | buf[i] = pUtf8[i]; |
351 | #else |
352 | dTHX; |
353 | for (i = 0; i < nUtf8; i+= UTF8SKIP(pUtf8 + i)) { |
354 | unsigned long u = utf8_to_uvchr((U8*)(pUtf8 + i), 0); |
355 | if (u > 0xFF) { |
356 | iConsole->Printf(_L("(keycode > 0xFF)\n")); |
357 | buf[i] = 0; |
358 | return -1; |
359 | } |
360 | buf[i] = u; |
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361 | } |
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362 | #endif |
363 | if (nUtf8 < n) |
364 | buf[nUtf8] = 0; |
365 | return nUtf8; |
366 | } |
367 | |
368 | int CPerlBase::ConsoleWrite(const int fd, const char* buf, int n) |
369 | { |
370 | if (iWriteFunc) |
371 | return iWriteFunc(fd, buf, n); |
372 | |
373 | if (!iConsole) { |
374 | errno = EIO; |
375 | return -1; |
376 | } |
377 | |
378 | if (n < 0) { |
379 | errno = EINVAL; |
380 | return -1; |
381 | } |
382 | |
383 | if (n == 0) |
384 | return 0; |
385 | |
386 | int wrote = 0; |
387 | #ifdef PERL_SYMBIAN_CONSOLE_UTF8 |
388 | dTHX; |
389 | if (is_utf8_string((U8*)buf, n)) { |
390 | for (int i = 0; i < n; i += UTF8SKIP(buf + i)) { |
391 | TChar u = utf8_to_uvchr((U8*)(buf + i), 0); |
392 | iConsole->Printf(_L("%c"), u); |
393 | wrote++; |
394 | } |
395 | } else { |
396 | iConsole->Printf(_L("(malformed utf8: ")); |
397 | for (int i = 0; i < n; i++) |
398 | iConsole->Printf(_L("%02x "), buf[i]); |
399 | iConsole->Printf(_L(")\n")); |
400 | } |
401 | #else |
402 | for (int i = 0; i < n; i++) { |
403 | iConsole->Printf(_L("%c"), buf[i]); |
404 | } |
405 | wrote = n; |
406 | #endif |
407 | iConsoleUsed += wrote; |
408 | return n; |
409 | } |
410 | |