icuSources/tools/toolutil/pkg_icu.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /******************************************************************************
   4  *   Copyright (C) 2008-2015, International Business Machines
   5  *   Corporation and others.  All Rights Reserved.
   6  *******************************************************************************
   7  */
   8 #include "unicode/utypes.h"
   9 #include "unicode/localpointer.h"
  10 #include "unicode/putil.h"
  11 #include "cstring.h"
  12 #include "toolutil.h"
  13 #include "uoptions.h"
  14 #include "uparse.h"
  15 #include "package.h"
  16 #include "pkg_icu.h"
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21
  22 // read a file list -------------------------------------------------------- ***
  23
  24 U_NAMESPACE_USE
  25
  26 static const struct {
  27     const char *suffix;
  28     int32_t length;
  29 } listFileSuffixes[]={
  30     { ".txt", 4 },
  31     { ".lst", 4 },
  32     { ".tmp", 4 }
  33 };
  34
  35 /* check for multiple text file suffixes to see if this list name is a text file name */
  36 static UBool
  37 isListTextFile(const char *listname) {
  38     const char *listNameEnd=strchr(listname, 0);
  39     const char *suffix;
  40     int32_t i, length;
  41     for(i=0; i<UPRV_LENGTHOF(listFileSuffixes); ++i) {
  42         suffix=listFileSuffixes[i].suffix;
  43         length=listFileSuffixes[i].length;
  44         if((listNameEnd-listname)>length && 0==memcmp(listNameEnd-length, suffix, length)) {
  45             return TRUE;
  46         }
  47     }
  48     return FALSE;
  49 }
  50
  51 /*
  52  * Read a file list.
  53  * If the listname ends with ".txt", then read the list file
  54  * (in the system/ invariant charset).
  55  * If the listname ends with ".dat", then read the ICU .dat package file.
  56  * Otherwise, read the file itself as a single-item list.
  57  */
  58 U_CAPI Package * U_EXPORT2
  59 readList(const char *filesPath, const char *listname, UBool readContents, Package *listPkgIn) {
  60     Package *listPkg = listPkgIn;
  61     FILE *file;
  62     const char *listNameEnd;
  63
  64     if(listname==NULL || listname[0]==0) {
  65         fprintf(stderr, "missing list file\n");
  66         return NULL;
  67     }
  68
  69     if (listPkg == NULL) {
  70         listPkg=new Package();
  71         if(listPkg==NULL) {
  72             fprintf(stderr, "icupkg: not enough memory\n");
  73             exit(U_MEMORY_ALLOCATION_ERROR);
  74         }
  75     }
  76
  77     listNameEnd=strchr(listname, 0);
  78     if(isListTextFile(listname)) {
  79         // read the list file
  80         char line[1024];
  81         char *end;
  82         const char *start;
  83
  84         file=fopen(listname, "r");
  85         if(file==NULL) {
  86             fprintf(stderr, "icupkg: unable to open list file \"%s\"\n", listname);
  87             delete listPkg;
  88             exit(U_FILE_ACCESS_ERROR);
  89         }
  90
  91         while(fgets(line, sizeof(line), file)) {
  92             // remove comments
  93             end=strchr(line, '#');
  94             if(end!=NULL) {
  95                 *end=0;
  96             } else {
  97                 // remove trailing CR LF
  98                 end=strchr(line, 0);
  99                 while(line<end && (*(end-1)=='\r' || *(end-1)=='\n')) {
 100                     *--end=0;
 101                 }
 102             }
 103
 104             // check first non-whitespace character and
 105             // skip empty lines and
 106             // skip lines starting with reserved characters
 107             start=u_skipWhitespace(line);
 108             if(*start==0 || NULL!=strchr(U_PKG_RESERVED_CHARS, *start)) {
 109                 continue;
 110             }
 111
 112             // take whitespace-separated items from the line
 113             for(;;) {
 114                 // find whitespace after the item or the end of the line
 115                 for(end=(char *)start; *end!=0 && *end!=' ' && *end!='\t'; ++end) {}
 116                 if(*end==0) {
 117                     // this item is the last one on the line
 118                     end=NULL;
 119                 } else {
 120                     // the item is terminated by whitespace, terminate it with NUL
 121                     *end=0;
 122                 }
 123                 if(readContents) {
 124                     listPkg->addFile(filesPath, start);
 125                 } else {
 126                     listPkg->addItem(start);
 127                 }
 128
 129                 // find the start of the next item or exit the loop
 130                 if(end==NULL || *(start=u_skipWhitespace(end+1))==0) {
 131                     break;
 132                 }
 133             }
 134         }
 135         fclose(file);
 136     } else if((listNameEnd-listname)>4 && 0==memcmp(listNameEnd-4, ".dat", 4)) {
 137         // read the ICU .dat package
 138         // Accept a .dat file whose name differs from the ToC prefixes.
 139         listPkg->setAutoPrefix();
 140         listPkg->readPackage(listname);
 141     } else {
 142         // list the single file itself
 143         if(readContents) {
 144             listPkg->addFile(filesPath, listname);
 145         } else {
 146             listPkg->addItem(listname);
 147         }
 148     }
 149
 150     return listPkg;
 151 }
 152
 153 U_CAPI int U_EXPORT2
 154 writePackageDatFile(const char *outFilename, const char *outComment, const char *sourcePath, const char *addList, Package *pkg, char outType) {
 155     LocalPointer<Package> ownedPkg;
 156     LocalPointer<Package> addListPkg;
 157
 158     if (pkg == NULL) {
 159         ownedPkg.adoptInstead(new Package);
 160         if(ownedPkg.isNull()) {
 161             fprintf(stderr, "icupkg: not enough memory\n");
 162             return U_MEMORY_ALLOCATION_ERROR;
 163         }
 164         pkg = ownedPkg.getAlias();
 165
 166         addListPkg.adoptInstead(readList(sourcePath, addList, TRUE, NULL));
 167         if(addListPkg.isValid()) {
 168             pkg->addItems(*addListPkg);
 169         } else {
 170             return U_ILLEGAL_ARGUMENT_ERROR;
 171         }
 172     }
 173
 174     pkg->writePackage(outFilename, outType, outComment);
 175     return 0;
 176 }