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      1 /*
      2 *******************************************************************************
      3 *
      4 *   Copyright (C) 1998-2012, International Business Machines
      5 *   Corporation and others.  All Rights Reserved.
      6 *
      7 *******************************************************************************
      8 *
      9 * File ustr.h
     10 *
     11 * Modification History:
     12 *
     13 *   Date        Name        Description
     14 *   05/28/99    stephen     Creation.
     15 *******************************************************************************
     16 */
     17 
     18 #ifndef USTR_H
     19 #define USTR_H 1
     20 
     21 #include "unicode/utypes.h"
     22 
     23 #define U_APPEND_CHAR32(c,target,len) {                         \
     24     if (c <= 0xffff)                                            \
     25     {                                                           \
     26         *(target)++ = (UChar) c;                                \
     27         len=1;                                                  \
     28     }                                                           \
     29     else                                                        \
     30     {                                                           \
     31         target[0] = U16_LEAD(c);                                \
     32         target[1] = U16_TRAIL(c);                               \
     33         len=2;                                                  \
     34         target +=2;                                             \
     35     }                                                           \
     36 }
     37 
     38 #define U_APPEND_CHAR32_ONLY(c,target) {                             \
     39     if (c <= 0xffff)                                            \
     40     {                                                           \
     41         *(target)++ = (UChar) c;                                \
     42     }                                                           \
     43     else                                                        \
     44     {                                                           \
     45         target[0] = U16_LEAD(c);                                \
     46         target[1] = U16_TRAIL(c);                               \
     47         target +=2;                                             \
     48     }                                                           \
     49 }
     50 
     51 /* A C representation of a string "object" (to avoid realloc all the time) */
     52 struct UString {
     53   UChar *fChars;
     54   int32_t fLength;
     55   int32_t fCapacity;
     56 };
     57 
     58 U_CFUNC void ustr_init(struct UString *s);
     59 
     60 U_CFUNC void
     61 ustr_initChars(struct UString *s, const char* source, int32_t length, UErrorCode *status);
     62 
     63 U_CFUNC void ustr_deinit(struct UString *s);
     64 
     65 U_CFUNC void ustr_setlen(struct UString *s, int32_t len, UErrorCode *status);
     66 
     67 U_CFUNC void ustr_cpy(struct UString *dst, const struct UString *src,
     68                       UErrorCode *status);
     69 
     70 U_CFUNC void ustr_cat(struct UString *dst, const struct UString *src,
     71                       UErrorCode *status);
     72 
     73 U_CFUNC void ustr_ncat(struct UString *dst, const struct UString *src,
     74                        int32_t n, UErrorCode *status);
     75 
     76 U_CFUNC void ustr_ucat(struct UString *dst, UChar c, UErrorCode *status);
     77 U_CFUNC void ustr_u32cat(struct UString *dst, UChar32 c, UErrorCode *status);
     78 U_CFUNC void ustr_uscat(struct UString *dst, const UChar* src,int len,UErrorCode *status);
     79 #endif
     80