%% options copyright owner = Dirk Krause copyright year = 2015-xxxx license = bsd %% header /** @file String recoding from ASCII to UTF-16. CRT on Windows: Not used. */ #ifndef DK4CONF_H_INCLUDED #include "dk4conf.h" #endif #ifndef DK4TYPES_H_INCLUDED #include "dk4types.h" #endif #ifndef DK4ERROR_H_INCLUDED #include "dk4error.h" #endif #ifdef __cplusplus extern "C" { #endif /** Recode string from ASCII to UTF-16. @param dstb Destination buffer. @param szdstb Size of destination buffer (number of dk4_c16_t). @param src Source string to convert. @param erp Error report, may be NULL. @return 1 on success, 0 on error. Error codes: - DK4_E_INVALID_ARGUMENTS
if src or dstb is NULL or szdstb is 0, - DK4_E_BUFFER_TOO_SMALL
if dstb is too small, - DK4_E_SYNTAX
with the number of successfully recoded characters in nelem if a non-recodable character was found. */ int dk4recode_ascii_to_utf16( dk4_c16_t *dstb, size_t szdstb, const char *src, dk4_er_t *erp ); #ifdef __cplusplus } #endif %% module #include "dk4rec07.h" #include "dk4mem.h" #include "dk4utf16.h" int dk4recode_ascii_to_utf16( dk4_c16_t *dstb, size_t szdstb, const char *src, dk4_er_t *erp ) { dk4_c16_t buf[4]; size_t sz; size_t used = 0; size_t rdb = 0; int back = 0; unsigned char uc = '\0'; if ((NULL != dstb) && (NULL != src) && (0 < szdstb)) { back = 1; while(('\0' != *src) && (1 == back) && (used < szdstb)) { uc = (unsigned char)(*(src++)); sz = DK4_SIZEOF(buf,dk4_c16_t); if (0 != dk4utf16_encode(buf, &sz, (dk4_c32_t)uc, erp)) { if ((szdstb - used) > sz) { DK4_MEMCPY(&(dstb[used]),buf,(2 * sz)); used += sz; } else { back = 0; dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } else { back = 0; dk4error_set_elsize_nelem(erp, DK4_E_SYNTAX, 1, rdb); } if (0 != back) { rdb++; } } if (used < szdstb) { dstb[used] = (dk4_c16_t)0U; } else { dstb[szdstb - 1] = (dk4_c16_t)0U; back = 0; dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } return back; }