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comparison: intl/icu/source/tools/gencfu/gencfu.cpp

intl/icu/source/tools/gencfu/gencfu.cpp

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1 /*
2 **********************************************************************
3 * Copyright (C) 2009-2011, International Business Machines
4 * Corporation and others. All Rights Reserved.
5 **********************************************************************
6 *
7 * File gencfu.c
8 */
9
10 //--------------------------------------------------------------------
11 //
12 // Tool for generating Unicode Confusable data files (.cfu files).
13 // .cfu files contain the compiled of the confusable data
14 // derived from the Unicode Consortium data described in
15 // Unicode UAX 39.
16 //
17 // Usage: gencfu [options] -r confusables-file.txt -w whole-script-confusables.txt -o output-file.cfu
18 //
19 // options: -v verbose
20 // -? or -h help
21 //
22 // The input rule filew is are plain text files containing confusable character
23 // definitions in the input format defined by Unicode UAX39 for the files
24 // confusables.txt and confusablesWholeScript.txt. This source (.txt) format
25 // is also accepted direaccepted by ICU spoof detedtors. The
26 // files must be encoded in utf-8 format, with or without a BOM.
27 //
28 //--------------------------------------------------------------------
29
30 #include "unicode/utypes.h"
31 #include "unicode/unistr.h"
32 #include "unicode/uclean.h"
33 #include "unicode/udata.h"
34 #include "unicode/putil.h"
35
36 #include "uoptions.h"
37 #include "unewdata.h"
38 #include "ucmndata.h"
39 #include "uspoof_impl.h"
40 #include "cmemory.h"
41
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45
46 U_NAMESPACE_USE
47
48 static char *progName;
49 static UOption options[]={
50 UOPTION_HELP_H, /* 0 */
51 UOPTION_HELP_QUESTION_MARK, /* 1 */
52 UOPTION_VERBOSE, /* 2 */
53 { "rules", NULL, NULL, NULL, 'r', UOPT_REQUIRES_ARG, 0 }, /* 3 */
54 { "wsrules", NULL, NULL, NULL, 'w', UOPT_REQUIRES_ARG, 0}, /* 4 */
55 { "out", NULL, NULL, NULL, 'o', UOPT_REQUIRES_ARG, 0 }, /* 5 */
56 UOPTION_ICUDATADIR, /* 6 */
57 UOPTION_DESTDIR, /* 7 */
58 UOPTION_COPYRIGHT, /* 8 */
59 };
60
61 void usageAndDie(int retCode) {
62 printf("Usage: %s [-v] [-options] -r confusablesRules.txt -w wholeScriptConfusables.txt -o output-file\n", progName);
63 printf("\tRead in Unicode confusable character definitions and write out the binary data\n"
64 "options:\n"
65 "\t-h or -? or --help this usage text\n"
66 "\t-V or --version show a version message\n"
67 "\t-c or --copyright include a copyright notice\n"
68 "\t-v or --verbose turn on verbose output\n"
69 "\t-i or --icudatadir directory for locating any needed intermediate data files,\n"
70 "\t followed by path, defaults to %s\n"
71 "\t-d or --destdir destination directory, followed by the path\n",
72 u_getDataDirectory());
73 exit (retCode);
74 }
75
76
77 #if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
78
79 /* dummy UDataInfo cf. udata.h */
80 static UDataInfo dummyDataInfo = {
81 sizeof(UDataInfo),
82 0,
83
84 U_IS_BIG_ENDIAN,
85 U_CHARSET_FAMILY,
86 U_SIZEOF_UCHAR,
87 0,
88
89 { 0, 0, 0, 0 }, /* dummy dataFormat */
90 { 0, 0, 0, 0 }, /* dummy formatVersion */
91 { 0, 0, 0, 0 } /* dummy dataVersion */
92 };
93
94 #else
95
96 //
97 // Set up the ICU data header, defined in ucmndata.h
98 //
99 DataHeader dh ={
100 {sizeof(DataHeader), // Struct MappedData
101 0xda,
102 0x27},
103
104 { // struct UDataInfo
105 sizeof(UDataInfo), // size
106 0, // reserved
107 U_IS_BIG_ENDIAN,
108 U_CHARSET_FAMILY,
109 U_SIZEOF_UCHAR,
110 0, // reserved
111
112 { 0x43, 0x66, 0x75, 0x20 }, // dataFormat="Cfu "
113 { 0xff, 0, 0, 0 }, // formatVersion. Filled in later with values
114 // from the builder. The values declared
115 // here should never appear in any real data.
116 { 5, 1, 0, 0 } // dataVersion (Unicode version)
117 }};
118
119 #endif
120
121 // Forward declaration for function for reading source files.
122 static const char *readFile(const char *fileName, int32_t *len);
123
124 //----------------------------------------------------------------------------
125 //
126 // main for gencfu
127 //
128 //----------------------------------------------------------------------------
129 int main(int argc, char **argv) {
130 UErrorCode status = U_ZERO_ERROR;
131 const char *confFileName;
132 const char *confWSFileName;
133 const char *outFileName;
134 const char *outDir = NULL;
135 const char *copyright = NULL;
136
137 //
138 // Pick up and check the command line arguments,
139 // using the standard ICU tool utils option handling.
140 //
141 U_MAIN_INIT_ARGS(argc, argv);
142 progName = argv[0];
143 argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);
144 if(argc<0) {
145 // Unrecognized option
146 fprintf(stderr, "error in command line argument \"%s\"\n", argv[-argc]);
147 usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
148 }
149
150 if(options[0].doesOccur || options[1].doesOccur) {
151 // -? or -h for help.
152 usageAndDie(0);
153 }
154
155 if (!(options[3].doesOccur && options[4].doesOccur && options[5].doesOccur)) {
156 fprintf(stderr, "confusables file, whole script confusables file and output file must all be specified.\n");
157 usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
158 }
159 confFileName = options[3].value;
160 confWSFileName = options[4].value;
161 outFileName = options[5].value;
162
163 if (options[6].doesOccur) {
164 u_setDataDirectory(options[6].value);
165 }
166
167 status = U_ZERO_ERROR;
168
169 /* Combine the directory with the file name */
170 if(options[7].doesOccur) {
171 outDir = options[7].value;
172 }
173 if (options[8].doesOccur) {
174 copyright = U_COPYRIGHT_STRING;
175 }
176
177 #if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
178 // spoof detection data file parsing is dependent on regular expressions.
179 // TODO: have the tool return an error status. Requires fixing the ICU data build
180 // so that it doesn't abort entirely on that error.
181
182 UNewDataMemory *pData;
183 char msg[1024];
184
185 /* write message with just the name */
186 sprintf(msg, "gencfu writes dummy %s because of UCONFIG_NO_REGULAR_EXPRESSIONS and/or UCONFIG_NO_NORMALIZATION and/or UCONFIG_NO_FILE_IO, see uconfig.h", outFileName);
187 fprintf(stderr, "%s\n", msg);
188
189 /* write the dummy data file */
190 pData = udata_create(outDir, NULL, outFileName, &dummyDataInfo, NULL, &status);
191 udata_writeBlock(pData, msg, strlen(msg));
192 udata_finish(pData, &status);
193 return (int)status;
194
195 #else
196 /* Initialize ICU */
197 u_init(&status);
198 if (U_FAILURE(status)) {
199 fprintf(stderr, "%s: can not initialize ICU. status = %s\n",
200 argv[0], u_errorName(status));
201 exit(1);
202 }
203 status = U_ZERO_ERROR;
204
205 // Read in the confusables source file
206
207 int32_t confusablesLen = 0;
208 const char *confusables = readFile(confFileName, &confusablesLen);
209 if (confusables == NULL) {
210 printf("gencfu: error reading file \"%s\"\n", confFileName);
211 exit(-1);
212 }
213
214 int32_t wsConfusablesLen = 0;
215 const char *wsConfsables = readFile(confWSFileName, &wsConfusablesLen);
216 if (wsConfsables == NULL) {
217 printf("gencfu: error reading file \"%s\"\n", confFileName);
218 exit(-1);
219 }
220
221 //
222 // Create the Spoof Detector from the source confusables files.
223 // This will compile the data.
224 //
225 UParseError parseError;
226 parseError.line = 0;
227 parseError.offset = 0;
228 int32_t errType;
229 USpoofChecker *sc = uspoof_openFromSource(confusables, confusablesLen,
230 wsConfsables, wsConfusablesLen,
231 &errType, &parseError, &status);
232 if (U_FAILURE(status)) {
233 const char *errFile =
234 (errType == USPOOF_WHOLE_SCRIPT_CONFUSABLE)? confWSFileName : confFileName;
235 fprintf(stderr, "gencfu: uspoof_openFromSource error \"%s\" at file %s, line %d, column %d\n",
236 u_errorName(status), errFile, (int)parseError.line, (int)parseError.offset);
237 exit(status);
238 };
239
240
241 //
242 // Get the compiled rule data from the USpoofChecker.
243 //
244 uint32_t outDataSize;
245 uint8_t *outData;
246 outDataSize = uspoof_serialize(sc, NULL, 0, &status);
247 if (status != U_BUFFER_OVERFLOW_ERROR) {
248 fprintf(stderr, "gencfu: uspoof_serialize() returned %s\n", u_errorName(status));
249 exit(status);
250 }
251 status = U_ZERO_ERROR;
252 outData = new uint8_t[outDataSize];
253 uspoof_serialize(sc, outData, outDataSize, &status);
254
255 // Copy the data format version numbers from the spoof data header into the UDataMemory header.
256
257 uprv_memcpy(dh.info.formatVersion,
258 reinterpret_cast<SpoofDataHeader *>(outData)->fFormatVersion,
259 sizeof(dh.info.formatVersion));
260
261 //
262 // Create the output file
263 //
264 size_t bytesWritten;
265 UNewDataMemory *pData;
266 pData = udata_create(outDir, NULL, outFileName, &(dh.info), copyright, &status);
267 if(U_FAILURE(status)) {
268 fprintf(stderr, "gencfu: Could not open output file \"%s\", \"%s\"\n",
269 outFileName, u_errorName(status));
270 exit(status);
271 }
272
273
274 // Write the data itself.
275 udata_writeBlock(pData, outData, outDataSize);
276 // finish up
277 bytesWritten = udata_finish(pData, &status);
278 if(U_FAILURE(status)) {
279 fprintf(stderr, "gencfu: Error %d writing the output file\n", status);
280 exit(status);
281 }
282
283 if (bytesWritten != outDataSize) {
284 fprintf(stderr, "gencfu: Error writing to output file \"%s\"\n", outFileName);
285 exit(-1);
286 }
287
288 uspoof_close(sc);
289 delete [] outData;
290 delete [] confusables;
291 delete [] wsConfsables;
292 u_cleanup();
293 printf("gencfu: tool completed successfully.\n");
294 return 0;
295 #endif // UCONFIG_NO_REGULAR_EXPRESSIONS
296 }
297
298
299 //
300 // Read in a confusables source file
301 //
302 static const char *readFile(const char *fileName, int32_t *len) {
303 char *result;
304 long fileSize;
305 FILE *file;
306
307 file = fopen(fileName, "rb");
308 if( file == 0 ) {
309 return NULL;
310 }
311 fseek(file, 0, SEEK_END);
312 fileSize = ftell(file);
313 fseek(file, 0, SEEK_SET);
314 result = new char[fileSize+10];
315 if (result==NULL) {
316 fclose(file);
317 return NULL;
318 }
319
320 long t = fread(result, 1, fileSize, file);
321 if (t != fileSize) {
322 delete [] result;
323 fclose(file);
324 return NULL;
325 }
326 result[fileSize]=0;
327 *len = static_cast<int32_t>(fileSize);
328 fclose(file);
329 return result;
330 }

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