Check in the pristine copy of ICU 4.6...

icu46/source/tools/genbrk/genbrk.cpp

+/*
+**********************************************************************
+*   Copyright (C) 2002-2009, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+**********************************************************************
+*
+* File genbrk.c
+*/
+
+//--------------------------------------------------------------------
+//
+//   Tool for generating RuleBasedBreakIterator data files (.brk files).
+//   .brk files contain the precompiled rules for standard types
+//   of iterators - word, line, sentence, etc.
+//
+//   Usage:  genbrk [options] -r rule-file.txt  -o output-file.brk
+//
+//       options:   -v         verbose
+//                  -? or -h   help
+//
+//   The input rule file is a plain text file containing break rules
+//    in the input format accepted by RuleBasedBreakIterators.  The
+//    file can be encoded as utf-8, or utf-16 (either endian), or
+//    in the default code page (platform dependent.).  utf encoded
+//    files must include a BOM.
+//
+//--------------------------------------------------------------------
+
+#include "unicode/utypes.h"
+#include "unicode/ucnv.h"
+#include "unicode/unistr.h"
+#include "unicode/rbbi.h"
+#include "unicode/uclean.h"
+#include "unicode/udata.h"
+#include "unicode/putil.h"
+
+#include "uoptions.h"
+#include "unewdata.h"
+#include "ucmndata.h"
+#include "rbbidata.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 */
+    { "out",   NULL, NULL, NULL, 'o', UOPT_REQUIRES_ARG, 0 },   /* 4 */
+    UOPTION_ICUDATADIR,         /* 5 */
+    UOPTION_DESTDIR,            /* 6 */
+    UOPTION_COPYRIGHT,          /* 7 */
+};
+
+void usageAndDie(int retCode) {
+        printf("Usage: %s [-v] [-options] -r rule-file -o output-file\n", progName);
+        printf("\tRead in break iteration rules text 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_BREAK_ITERATION || UCONFIG_NO_FILE_IO
+
+/* dummy UDataInfo cf. udata.h */
+static UDataInfo dummyDataInfo = {
+    sizeof(UDataInfo),
+    0,
+
+    U_IS_BIG_ENDIAN,
+    U_CHARSET_FAMILY,
+    U_SIZEOF_UCHAR,
+    0,
+
+    { 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
+        0xda,
+        0x27},
+
+    {                               // struct UDataInfo
+        sizeof(UDataInfo),          //     size
+        0,                          //     reserved
+        U_IS_BIG_ENDIAN,
+        U_CHARSET_FAMILY,
+        U_SIZEOF_UCHAR,
+        0,                          //     reserved
+
+    { 0x42, 0x72, 0x6b, 0x20 },     //     dataFormat="Brk "
+    { 0xff, 0, 0, 0 },              //     formatVersion.  Filled in later with values
+                                    //      from the RBBI rule builder.  The  values declared
+                                    //      here should never appear in any real RBBI data.
+        { 4, 1, 0, 0 }              //   dataVersion (Unicode version)
+    }};
+
+#endif
+
+//----------------------------------------------------------------------------
+//
+//  main      for genbrk
+//
+//----------------------------------------------------------------------------
+int  main(int argc, char **argv) {
+    UErrorCode  status = U_ZERO_ERROR;
+    const char *ruleFileName;
+    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)) {
+        fprintf(stderr, "rule file and output file must both be specified.\n");
+        usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
+    }
+    ruleFileName = options[3].value;
+    outFileName  = options[4].value;
+
+    if (options[5].doesOccur) {
+        u_setDataDirectory(options[5].value);
+    }
+
+    status = U_ZERO_ERROR;
+
+    /* Combine the directory with the file name */
+    if(options[6].doesOccur) {
+        outDir = options[6].value;
+    }
+    if (options[7].doesOccur) {
+        copyright = U_COPYRIGHT_STRING;
+    }
+
+#if UCONFIG_NO_BREAK_ITERATION || UCONFIG_NO_FILE_IO
+
+    UNewDataMemory *pData;
+    char msg[1024];
+
+    /* write message with just the name */
+    sprintf(msg, "genbrk writes dummy %s because of UCONFIG_NO_BREAK_ITERATION 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 rule source file
+    //
+    long        result;
+    long        ruleFileSize;
+    FILE        *file;
+    char        *ruleBufferC;
+
+    file = fopen(ruleFileName, "rb");
+    if( file == 0 ) {
+        fprintf(stderr, "Could not open file \"%s\"\n", ruleFileName);
+        exit(-1);
+    }
+    fseek(file, 0, SEEK_END);
+    ruleFileSize = ftell(file);
+    fseek(file, 0, SEEK_SET);
+    ruleBufferC = new char[ruleFileSize+10];
+
+    result = (long)fread(ruleBufferC, 1, ruleFileSize, file);
+    if (result != ruleFileSize)  {
+        fprintf(stderr, "Error reading file \"%s\"\n", ruleFileName);
+        exit (-1);
+    }
+    ruleBufferC[ruleFileSize]=0;
+    fclose(file);
+
+    //
+    // Look for a Unicode Signature (BOM) on the rule file
+    //
+    int32_t        signatureLength;
+    const char *   ruleSourceC = ruleBufferC;
+    const char*    encoding = ucnv_detectUnicodeSignature(
+                           ruleSourceC, ruleFileSize, &signatureLength, &status);
+    if (U_FAILURE(status)) {
+        exit(status);
+    }
+    if(encoding!=NULL ){
+        ruleSourceC  += signatureLength;
+        ruleFileSize -= signatureLength;
+    }
+
+    //
+    // Open a converter to take the rule file to UTF-16
+    //
+    UConverter* conv;
+    conv = ucnv_open(encoding, &status);
+    if (U_FAILURE(status)) {
+        fprintf(stderr, "ucnv_open: ICU Error \"%s\"\n", u_errorName(status));
+        exit(status);
+    }
+
+    //
+    // Convert the rules to UChar.
+    //  Preflight first to determine required buffer size.
+    //
+    uint32_t destCap = ucnv_toUChars(conv,
+                       NULL,           //  dest,
+                       0,              //  destCapacity,
+                       ruleSourceC,
+                       ruleFileSize,
+                       &status);
+    if (status != U_BUFFER_OVERFLOW_ERROR) {
+        fprintf(stderr, "ucnv_toUChars: ICU Error \"%s\"\n", u_errorName(status));
+        exit(status);
+    };
+
+    status = U_ZERO_ERROR;
+    UChar *ruleSourceU = new UChar[destCap+1];
+    ucnv_toUChars(conv,
+                  ruleSourceU,     //  dest,
+                  destCap+1,
+                  ruleSourceC,
+                  ruleFileSize,
+                  &status);
+    if (U_FAILURE(status)) {
+        fprintf(stderr, "ucnv_toUChars: ICU Error \"%s\"\n", u_errorName(status));
+        exit(status);
+    };
+    ucnv_close(conv);
+
+
+    //
+    //  Put the source rules into a UnicodeString
+    //
+    UnicodeString ruleSourceS(FALSE, ruleSourceU, destCap);
+
+    //
+    //  Create the break iterator from the rules
+    //     This will compile the rules.
+    //
+    UParseError parseError;
+    parseError.line = 0;
+    parseError.offset = 0;
+    RuleBasedBreakIterator *bi = new RuleBasedBreakIterator(ruleSourceS, parseError, status);
+    if (U_FAILURE(status)) {
+        fprintf(stderr, "createRuleBasedBreakIterator: ICU Error \"%s\"  at line %d, column %d\n",
+                u_errorName(status), (int)parseError.line, (int)parseError.offset);
+        exit(status);
+    };
+
+
+    //
+    //  Get the compiled rule data from the break iterator.
+    //
+    uint32_t        outDataSize;
+    const uint8_t  *outData;
+    outData = bi->getBinaryRules(outDataSize);
+
+    // Copy the data format version numbers from the RBBI data header into the UDataMemory header.
+    uprv_memcpy(dh.info.formatVersion, ((RBBIDataHeader *)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, "genbrk: 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, "genbrk: error %d writing the output file\n", status);
+        exit(status);
+    }
+    
+    if (bytesWritten != outDataSize) {
+        fprintf(stderr, "Error writing to output file \"%s\"\n", outFileName);
+        exit(-1);
+    }
+
+    delete bi;
+    delete[] ruleSourceU;
+    delete[] ruleBufferC;
+    u_cleanup();
+
+
+    printf("genbrk: tool completed successfully.\n");
+    return 0;
+
+#endif /* #if !UCONFIG_NO_BREAK_ITERATION */
+}
+