Check in the pristine copy of ICU 4.6...

icu46/source/tools/gennorm2/gennorm2.cpp

+/*
+*******************************************************************************
+*
+*   Copyright (C) 2009-2010, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*
+*******************************************************************************
+*   file name:  gennorm2.cpp
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2009nov25
+*   created by: Markus W. Scherer
+*
+*   This program reads text files that define Unicode normalization,
+*   parses them, and builds a binary data file.
+*/
+
+#include "unicode/utypes.h"
+#include "n2builder.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "unicode/errorcode.h"
+#include "unicode/localpointer.h"
+#include "unicode/putil.h"
+#include "unicode/uchar.h"
+#include "unicode/unistr.h"
+#include "charstr.h"
+#include "normalizer2impl.h"
+#include "toolutil.h"
+#include "uoptions.h"
+#include "uparse.h"
+
+#if UCONFIG_NO_NORMALIZATION
+#include "unewdata.h"
+#endif
+
+#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
+
+U_NAMESPACE_BEGIN
+
+UBool beVerbose=FALSE, haveCopyright=TRUE;
+
+U_DEFINE_LOCAL_OPEN_POINTER(LocalStdioFilePointer, FILE, fclose);
+
+#if !UCONFIG_NO_NORMALIZATION
+void parseFile(FILE *f, Normalizer2DataBuilder &builder);
+#endif
+
+/* -------------------------------------------------------------------------- */
+
+enum {
+    HELP_H,
+    HELP_QUESTION_MARK,
+    VERBOSE,
+    COPYRIGHT,
+    SOURCEDIR,
+    OUTPUT_FILENAME,
+    UNICODE_VERSION,
+    OPT_FAST
+};
+
+static UOption options[]={
+    UOPTION_HELP_H,
+    UOPTION_HELP_QUESTION_MARK,
+    UOPTION_VERBOSE,
+    UOPTION_COPYRIGHT,
+    UOPTION_SOURCEDIR,
+    UOPTION_DEF("output", 'o', UOPT_REQUIRES_ARG),
+    UOPTION_DEF("unicode", 'u', UOPT_REQUIRES_ARG),
+    UOPTION_DEF("fast", '\1', UOPT_NO_ARG)
+};
+
+extern "C" int
+main(int argc, char* argv[]) {
+    U_MAIN_INIT_ARGS(argc, argv);
+
+    /* preset then read command line options */
+    options[SOURCEDIR].value="";
+    options[UNICODE_VERSION].value=U_UNICODE_VERSION;
+    argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[HELP_H]), options);
+
+    /* error handling, printing usage message */
+    if(argc<0) {
+        fprintf(stderr,
+            "error in command line argument \"%s\"\n",
+            argv[-argc]);
+    }
+    if(!options[OUTPUT_FILENAME].doesOccur) {
+        argc=-1;
+    }
+    if( argc<2 ||
+        options[HELP_H].doesOccur || options[HELP_QUESTION_MARK].doesOccur
+    ) {
+        /*
+         * Broken into chunks because the C89 standard says the minimum
+         * required supported string length is 509 bytes.
+         */
+        fprintf(stderr,
+            "Usage: %s [-options] infiles+ -o outputfilename\n"
+            "\n"
+            "Reads the infiles with normalization data and\n"
+            "creates a binary file (outputfilename) with the data.\n"
+            "\n",
+            argv[0]);
+        fprintf(stderr,
+            "Options:\n"
+            "\t-h or -? or --help  this usage text\n"
+            "\t-v or --verbose     verbose output\n"
+            "\t-c or --copyright   include a copyright notice\n"
+            "\t-u or --unicode     Unicode version, followed by the version like 5.2.0\n");
+        fprintf(stderr,
+            "\t-s or --sourcedir   source directory, followed by the path\n"
+            "\t-o or --output      output filename\n");
+        fprintf(stderr,
+            "\t      --fast        optimize the .nrm file for fast normalization,\n"
+            "\t                    which might increase its size  (Writes fully decomposed\n"
+            "\t                    regular mappings instead of delta mappings.\n"
+            "\t                    You should measure the runtime speed to make sure that\n"
+            "\t                    this is a good trade-off.)\n");
+        return argc<0 ? U_ILLEGAL_ARGUMENT_ERROR : U_ZERO_ERROR;
+    }
+
+    beVerbose=options[VERBOSE].doesOccur;
+    haveCopyright=options[COPYRIGHT].doesOccur;
+
+    IcuToolErrorCode errorCode("gennorm2/main()");
+
+#if UCONFIG_NO_NORMALIZATION
+
+    fprintf(stderr,
+        "gennorm2 writes a dummy binary data file "
+        "because UCONFIG_NO_NORMALIZATION is set, \n"
+        "see icu/source/common/unicode/uconfig.h\n");
+    udata_createDummy(NULL, NULL, options[OUTPUT_FILENAME].value, errorCode);
+    // Should not return an error since this is the expected behaviour if UCONFIG_NO_NORMALIZATION is on.
+    // return U_UNSUPPORTED_ERROR;
+    return 0;
+
+#else
+
+    LocalPointer<Normalizer2DataBuilder> builder(new Normalizer2DataBuilder(errorCode));
+    errorCode.assertSuccess();
+
+    builder->setUnicodeVersion(options[UNICODE_VERSION].value);
+
+    if(options[OPT_FAST].doesOccur) {
+        builder->setOptimization(Normalizer2DataBuilder::OPTIMIZE_FAST);
+    }
+
+    // prepare the filename beginning with the source dir
+    CharString filename(options[SOURCEDIR].value, errorCode);
+    int32_t pathLength=filename.length();
+    if( pathLength>0 &&
+        filename[pathLength-1]!=U_FILE_SEP_CHAR &&
+        filename[pathLength-1]!=U_FILE_ALT_SEP_CHAR
+    ) {
+        filename.append(U_FILE_SEP_CHAR, errorCode);
+        pathLength=filename.length();
+    }
+
+    for(int i=1; i<argc; ++i) {
+        printf("gennorm2: processing %s\n", argv[i]);
+        filename.append(argv[i], errorCode);
+        LocalStdioFilePointer f(fopen(filename.data(), "r"));
+        if(f==NULL) {
+            fprintf(stderr, "gennorm2 error: unable to open %s\n", filename.data());
+            exit(U_FILE_ACCESS_ERROR);
+        }
+        builder->setOverrideHandling(Normalizer2DataBuilder::OVERRIDE_PREVIOUS);
+        parseFile(f.getAlias(), *builder);
+        filename.truncate(pathLength);
+    }
+
+    builder->writeBinaryFile(options[OUTPUT_FILENAME].value);
+
+    return errorCode.get();
+
+#endif
+}
+
+#if !UCONFIG_NO_NORMALIZATION
+
+void parseFile(FILE *f, Normalizer2DataBuilder &builder) {
+    IcuToolErrorCode errorCode("gennorm2/parseFile()");
+    char line[300];
+    uint32_t startCP, endCP;
+    while(NULL!=fgets(line, (int)sizeof(line), f)) {
+        char *comment=(char *)strchr(line, '#');
+        if(comment!=NULL) {
+            *comment=0;
+        }
+        u_rtrim(line);
+        if(line[0]==0) {
+            continue;  // skip empty and comment-only lines
+        }
+        if(line[0]=='*') {
+            continue;  // reserved syntax
+        }
+        const char *delimiter;
+        int32_t rangeLength=
+            u_parseCodePointRangeAnyTerminator(line, &startCP, &endCP, &delimiter, errorCode);
+        if(errorCode.isFailure()) {
+            fprintf(stderr, "gennorm2 error: parsing code point range from %s\n", line);
+            exit(errorCode.reset());
+        }
+        delimiter=u_skipWhitespace(delimiter);
+        if(*delimiter==':') {
+            const char *s=u_skipWhitespace(delimiter+1);
+            char *end;
+            unsigned long value=strtoul(s, &end, 10);
+            if(end<=s || *u_skipWhitespace(end)!=0 || value>=0xff) {
+                fprintf(stderr, "gennorm2 error: parsing ccc from %s\n", line);
+                exit(U_PARSE_ERROR);
+            }
+            for(UChar32 c=(UChar32)startCP; c<=(UChar32)endCP; ++c) {
+                builder.setCC(c, (uint8_t)value);
+            }
+            continue;
+        }
+        if(*delimiter=='-') {
+            if(*u_skipWhitespace(delimiter+1)!=0) {
+                fprintf(stderr, "gennorm2 error: parsing remove-mapping %s\n", line);
+                exit(U_PARSE_ERROR);
+            }
+            for(UChar32 c=(UChar32)startCP; c<=(UChar32)endCP; ++c) {
+                builder.removeMapping(c);
+            }
+            continue;
+        }
+        if(*delimiter=='=' || *delimiter=='>') {
+            UChar uchars[Normalizer2Impl::MAPPING_LENGTH_MASK];
+            int32_t length=u_parseString(delimiter+1, uchars, LENGTHOF(uchars), NULL, errorCode);
+            if(errorCode.isFailure()) {
+                fprintf(stderr, "gennorm2 error: parsing mapping string from %s\n", line);
+                exit(errorCode.reset());
+            }
+            UnicodeString mapping(FALSE, uchars, length);
+            if(*delimiter=='=') {
+                if(rangeLength!=1) {
+                    fprintf(stderr,
+                            "gennorm2 error: round-trip mapping for more than 1 code point on %s\n",
+                            line);
+                    exit(U_PARSE_ERROR);
+                }
+                builder.setRoundTripMapping((UChar32)startCP, mapping);
+            } else {
+                for(UChar32 c=(UChar32)startCP; c<=(UChar32)endCP; ++c) {
+                    builder.setOneWayMapping(c, mapping);
+                }
+            }
+            continue;
+        }
+        fprintf(stderr, "gennorm2 error: unrecognized data line %s\n", line);
+        exit(U_PARSE_ERROR);
+    }
+}
+
+#endif // !UCONFIG_NO_NORMALIZATION
+
+U_NAMESPACE_END
+
+/*
+ * Hey, Emacs, please set the following:
+ *
+ * Local Variables:
+ * indent-tabs-mode: nil
+ * End:
+ *
+ */