The Tor Browser: intl/icu/source/tools/gencfu/gencfu.cpp@fc2d59ddac77 (annotated)

intl/icu/source/tools/gencfu/gencfu.cpp@fc2d59ddac77 (annotated)

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

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /*
 **********************************************************************
 *   Copyright (C) 2009-2011, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *
 * File gencfu.c
 */
 //--------------------------------------------------------------------
 //
 //   Tool for generating Unicode Confusable data files (.cfu files).
 //   .cfu files contain the compiled of the confusable data
 //   derived from the Unicode Consortium data described in
 //   Unicode UAX 39.
 //
 //   Usage:  gencfu [options] -r confusables-file.txt -w whole-script-confusables.txt  -o output-file.cfu
 //
 //       options:   -v         verbose
 //                  -? or -h   help
 //
 //   The input rule filew is are plain text files containing confusable character
 //    definitions in the input format defined by Unicode UAX39 for the files
 //    confusables.txt and confusablesWholeScript.txt.  This source (.txt) format
 //    is also accepted direaccepted by ICU spoof detedtors.  The
 //    files must be encoded in utf-8 format, with or without a BOM.
 //
 //--------------------------------------------------------------------
 #include "unicode/utypes.h"
 #include "unicode/unistr.h"
 #include "unicode/uclean.h"
 #include "unicode/udata.h"
 #include "unicode/putil.h"
 #include "uoptions.h"
 #include "unewdata.h"
 #include "ucmndata.h"
 #include "uspoof_impl.h"
 #include "cmemory.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 U_NAMESPACE_USE
 static char *progName;
 static UOption options[]={
     UOPTION_HELP_H,             /* 0 */
     UOPTION_HELP_QUESTION_MARK, /* 1 */
     UOPTION_VERBOSE,            /* 2 */
     { "rules", NULL, NULL, NULL, 'r', UOPT_REQUIRES_ARG, 0 },   /* 3 */
     { "wsrules", NULL, NULL, NULL, 'w', UOPT_REQUIRES_ARG, 0},  /* 4 */
     { "out",   NULL, NULL, NULL, 'o', UOPT_REQUIRES_ARG, 0 },   /* 5 */
     UOPTION_ICUDATADIR,         /* 6 */
     UOPTION_DESTDIR,            /* 7 */
     UOPTION_COPYRIGHT,          /* 8 */
 };
 void usageAndDie(int retCode) {
         printf("Usage: %s [-v] [-options] -r confusablesRules.txt -w wholeScriptConfusables.txt -o output-file\n", progName);
         printf("\tRead in Unicode confusable character definitions and write out the binary data\n"
             "options:\n"
             "\t-h or -? or --help  this usage text\n"
             "\t-V or --version     show a version message\n"
             "\t-c or --copyright   include a copyright notice\n"
             "\t-v or --verbose     turn on verbose output\n"
             "\t-i or --icudatadir  directory for locating any needed intermediate data files,\n"
             "\t                    followed by path, defaults to %s\n"
             "\t-d or --destdir     destination directory, followed by the path\n",
             u_getDataDirectory());
         exit (retCode);
 }
 #if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
 /* dummy UDataInfo cf. udata.h */
 static UDataInfo dummyDataInfo = {
     sizeof(UDataInfo),
 ,
     U_IS_BIG_ENDIAN,
     U_CHARSET_FAMILY,
     U_SIZEOF_UCHAR,
 ,
     { 0, 0, 0, 0 },                 /* dummy dataFormat */
     { 0, 0, 0, 0 },                 /* dummy formatVersion */
     { 0, 0, 0, 0 }                  /* dummy dataVersion */
 };
 #else
 //
 //  Set up the ICU data header, defined in ucmndata.h
 //
 DataHeader dh ={
     {sizeof(DataHeader),           // Struct MappedData
 xda,
 x27},
     {                               // struct UDataInfo
         sizeof(UDataInfo),          //     size
 ,                          //     reserved
         U_IS_BIG_ENDIAN,
         U_CHARSET_FAMILY,
         U_SIZEOF_UCHAR,
 ,                          //     reserved
     { 0x43, 0x66, 0x75, 0x20 },     //     dataFormat="Cfu "
     { 0xff, 0, 0, 0 },              //     formatVersion.  Filled in later with values
                                     //      from the  builder.  The  values declared
                                     //      here should never appear in any real data.
         { 5, 1, 0, 0 }              //   dataVersion (Unicode version)
     }};
 #endif
 // Forward declaration for function for reading source files.
 static const char *readFile(const char *fileName, int32_t *len);
 //----------------------------------------------------------------------------
 //
 //  main      for gencfu
 //
 //----------------------------------------------------------------------------
 int  main(int argc, char **argv) {
     UErrorCode  status = U_ZERO_ERROR;
     const char *confFileName;
     const char *confWSFileName;
     const char *outFileName;
     const char *outDir = NULL;
     const char *copyright = NULL;
     //
     // Pick up and check the command line arguments,
     //    using the standard ICU tool utils option handling.
     //
     U_MAIN_INIT_ARGS(argc, argv);
     progName = argv[0];
     argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);
     if(argc<0) {
         // Unrecognized option
         fprintf(stderr, "error in command line argument \"%s\"\n", argv[-argc]);
         usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
     }
     if(options[0].doesOccur || options[1].doesOccur) {
         //  -? or -h for help.
         usageAndDie(0);
     }
     if (!(options[3].doesOccur && options[4].doesOccur && options[5].doesOccur)) {
         fprintf(stderr, "confusables file, whole script confusables file and output file must all be specified.\n");
         usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
     }
     confFileName   = options[3].value;
     confWSFileName = options[4].value;
     outFileName    = options[5].value;
     if (options[6].doesOccur) {
         u_setDataDirectory(options[6].value);
     }
     status = U_ZERO_ERROR;
     /* Combine the directory with the file name */
     if(options[7].doesOccur) {
         outDir = options[7].value;
     }
     if (options[8].doesOccur) {
         copyright = U_COPYRIGHT_STRING;
     }
 #if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
     // spoof detection data file parsing is dependent on regular expressions.
     // TODO: have the tool return an error status.  Requires fixing the ICU data build
     //       so that it doesn't abort entirely on that error.
     UNewDataMemory *pData;
     char msg[1024];
     /* write message with just the name */
     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);
     fprintf(stderr, "%s\n", msg);
     /* write the dummy data file */
     pData = udata_create(outDir, NULL, outFileName, &dummyDataInfo, NULL, &status);
     udata_writeBlock(pData, msg, strlen(msg));
     udata_finish(pData, &status);
     return (int)status;
 #else
     /* Initialize ICU */
     u_init(&status);
     if (U_FAILURE(status)) {
         fprintf(stderr, "%s: can not initialize ICU.  status = %s\n",
             argv[0], u_errorName(status));
         exit(1);
     }
     status = U_ZERO_ERROR;
     //  Read in the confusables source file
     int32_t      confusablesLen = 0;
     const char  *confusables = readFile(confFileName, &confusablesLen);
     if (confusables == NULL) {
         printf("gencfu: error reading file  \"%s\"\n", confFileName);
         exit(-1);
     }
     int32_t     wsConfusablesLen = 0;
     const char *wsConfsables =  readFile(confWSFileName, &wsConfusablesLen);
     if (wsConfsables == NULL) {
         printf("gencfu: error reading file  \"%s\"\n", confFileName);
         exit(-1);
     }
     //
     //  Create the Spoof Detector from the source confusables files.
     //     This will compile the data.
     //
     UParseError parseError;
     parseError.line = 0;
     parseError.offset = 0;
     int32_t errType;
     USpoofChecker *sc = uspoof_openFromSource(confusables, confusablesLen,
                                               wsConfsables, wsConfusablesLen,
                                               &errType, &parseError, &status);
     if (U_FAILURE(status)) {
         const char *errFile =
             (errType == USPOOF_WHOLE_SCRIPT_CONFUSABLE)? confWSFileName : confFileName;
         fprintf(stderr, "gencfu: uspoof_openFromSource error \"%s\"  at file %s, line %d, column %d\n",
                 u_errorName(status), errFile, (int)parseError.line, (int)parseError.offset);
         exit(status);
     };
     //
     //  Get the compiled rule data from the USpoofChecker.
     //
     uint32_t        outDataSize;
     uint8_t        *outData;
     outDataSize = uspoof_serialize(sc, NULL, 0, &status);
     if (status != U_BUFFER_OVERFLOW_ERROR) {
         fprintf(stderr, "gencfu: uspoof_serialize() returned %s\n", u_errorName(status));
         exit(status);
     }
     status = U_ZERO_ERROR;
     outData = new uint8_t[outDataSize];
     uspoof_serialize(sc, outData, outDataSize, &status);
     // Copy the data format version numbers from the spoof data header into the UDataMemory header.
     uprv_memcpy(dh.info.formatVersion,
                 reinterpret_cast<SpoofDataHeader *>(outData)->fFormatVersion,
                 sizeof(dh.info.formatVersion));
     //
     //  Create the output file
     //
     size_t bytesWritten;
     UNewDataMemory *pData;
     pData = udata_create(outDir, NULL, outFileName, &(dh.info), copyright, &status);
     if(U_FAILURE(status)) {
         fprintf(stderr, "gencfu: Could not open output file \"%s\", \"%s\"\n",
                          outFileName, u_errorName(status));
         exit(status);
     }
     //  Write the data itself.
     udata_writeBlock(pData, outData, outDataSize);
     // finish up
     bytesWritten = udata_finish(pData, &status);
     if(U_FAILURE(status)) {
         fprintf(stderr, "gencfu: Error %d writing the output file\n", status);
         exit(status);
     }
     if (bytesWritten != outDataSize) {
         fprintf(stderr, "gencfu: Error writing to output file \"%s\"\n", outFileName);
         exit(-1);
     }
     uspoof_close(sc);
     delete [] outData;
     delete [] confusables;
     delete [] wsConfsables;
     u_cleanup();
     printf("gencfu: tool completed successfully.\n");
     return 0;
 #endif   // UCONFIG_NO_REGULAR_EXPRESSIONS
 }
  //
  //  Read in a confusables source file
  //
  static const char *readFile(const char *fileName, int32_t *len) {
     char       *result;
     long        fileSize;
     FILE        *file;
     file = fopen(fileName, "rb");
     if( file == 0 ) {
         return NULL;
     }
     fseek(file, 0, SEEK_END);
     fileSize = ftell(file);
     fseek(file, 0, SEEK_SET);
     result = new char[fileSize+10];
     if (result==NULL) {
         fclose(file);
         return NULL;
     }
     long t = fread(result, 1, fileSize, file);
     if (t != fileSize)  {
         delete [] result;
         fclose(file);
         return NULL;
     }
     result[fileSize]=0;
     *len = static_cast<int32_t>(fileSize);
     fclose(file);
     return result;
  }

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intl/icu/source/tools/gencfu/gencfu.cpp@fc2d59ddac77 (annotated)

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