michael@0: /*
michael@0: **********************************************************************
michael@0: * Copyright (c) 2003, International Business Machines
michael@0: * Corporation and others.  All Rights Reserved.
michael@0: **********************************************************************
michael@0: * Author: Alan Liu
michael@0: * Created: March 19 2003
michael@0: * Since: ICU 2.6
michael@0: **********************************************************************
michael@0: */
michael@0: #include "unicode/ucat.h"
michael@0: #include "unicode/ustring.h"
michael@0: #include "cstring.h"
michael@0: #include "uassert.h"
michael@0: 
michael@0: /* Separator between set_num and msg_num */
michael@0: static const char SEPARATOR = '%';
michael@0: 
michael@0: /* Maximum length of a set_num/msg_num key, incl. terminating zero.
michael@0:  * Longest possible key is "-2147483648%-2147483648" */
michael@0: #define MAX_KEY_LEN (24)
michael@0: 
michael@0: /**
michael@0:  * Fill in buffer with a set_num/msg_num key string, given the numeric
michael@0:  * values. Numeric values must be >= 0. Buffer must be of length
michael@0:  * MAX_KEY_LEN or more.
michael@0:  */
michael@0: static char*
michael@0: _catkey(char* buffer, int32_t set_num, int32_t msg_num) {
michael@0:     int32_t i = 0;
michael@0:     i = T_CString_integerToString(buffer, set_num, 10);
michael@0:     buffer[i++] = SEPARATOR;
michael@0:     T_CString_integerToString(buffer+i, msg_num, 10);
michael@0:     return buffer;
michael@0: }
michael@0: 
michael@0: U_CAPI u_nl_catd U_EXPORT2
michael@0: u_catopen(const char* name, const char* locale, UErrorCode* ec) {
michael@0:     return (u_nl_catd) ures_open(name, locale, ec);
michael@0: }
michael@0: 
michael@0: U_CAPI void U_EXPORT2
michael@0: u_catclose(u_nl_catd catd) {
michael@0:     ures_close((UResourceBundle*) catd); /* may be NULL */
michael@0: }
michael@0: 
michael@0: U_CAPI const UChar* U_EXPORT2
michael@0: u_catgets(u_nl_catd catd, int32_t set_num, int32_t msg_num,
michael@0:           const UChar* s,
michael@0:           int32_t* len, UErrorCode* ec) {
michael@0: 
michael@0:     char key[MAX_KEY_LEN];
michael@0:     const UChar* result;
michael@0: 
michael@0:     if (ec == NULL || U_FAILURE(*ec)) {
michael@0:         goto ERROR;
michael@0:     }
michael@0: 
michael@0:     result = ures_getStringByKey((const UResourceBundle*) catd,
michael@0:                                  _catkey(key, set_num, msg_num),
michael@0:                                  len, ec);
michael@0:     if (U_FAILURE(*ec)) {
michael@0:         goto ERROR;
michael@0:     }
michael@0: 
michael@0:     return result;
michael@0: 
michael@0:  ERROR:
michael@0:     /* In case of any failure, return s */
michael@0:     if (len != NULL) {
michael@0:         *len = u_strlen(s);
michael@0:     }
michael@0:     return s;
michael@0: }
michael@0: 
michael@0: /*eof*/