diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk4rec19.ctr |
Initial commit
Diffstat (limited to 'support/dktools/dk4rec19.ctr')
-rw-r--r-- | support/dktools/dk4rec19.ctr | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/support/dktools/dk4rec19.ctr b/support/dktools/dk4rec19.ctr new file mode 100644 index 0000000000..d476e1f1c7 --- /dev/null +++ b/support/dktools/dk4rec19.ctr @@ -0,0 +1,109 @@ +%% options + +copyright owner = Dirk Krause +copyright year = 2015-xxxx +license = bsd + + +%% header + +/** @file + String recoding from UTF-16 to 32 bit. + + 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 UTF-16 to 32 bit. + @param dstb Destination buffer. + @param szdstb Size of destination buffer (number of bytes). + @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<br> + if src or dstb is NULL or szdstb is 0, + - DK4_E_BUFFER_TOO_SMALL<br> + if dstb is too small, + - DK4_E_SYNTAX<br> + with the number of successfully recoded characters in nelem if a + non-recodable character was found. +*/ +int +dk4recode_utf16_to_c32( + dk4_c32_t *dstb, size_t szdstb, const dk4_c16_t *src, dk4_er_t *erp +); + +#ifdef __cplusplus +} +#endif + + +%% module + +#include "dk4rec19.h" +#include "dk4utf16.h" + + + +int +dk4recode_utf16_to_c32( + dk4_c32_t *dstb, size_t szdstb, const dk4_c16_t *src, dk4_er_t *erp +) +{ + dk4_utf16_decoder_t dec; + size_t used = 0; + size_t rd = 0; + dk4_c32_t c32 = dkC32(0); + int back = 0; + + if ((NULL != dstb) && (NULL != src) && (0 < szdstb)) { + back = 1; + dk4utf16_init(&dec); + while(((dk4_c16_t)0U != *src) && (1 == back) && (used < szdstb)) { + switch(dk4utf16_add(&dec, *(src++))) { + case DK4_EDSTM_FINISHED: { + c32 = dk4utf16_get(&dec); + dk4utf16_init(&dec); + dstb[used++] = c32; + } break; + case DK4_EDSTM_ERROR: { + back = 0; + dk4error_set_elsize_nelem(erp, DK4_E_SYNTAX, 2, rd); + } break; + } + if (0 != back) { rd++; } + } + if (used < szdstb) { + dstb[used] = '\0'; + } else { + dstb[szdstb - 1] = '\0'; + back = 0; + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + if (0 == dk4utf16_is_empty(&dec)) { + back = 0; + dk4error_set_elsize_nelem(erp, DK4_E_SYNTAX, 2, rd); + } + } else { + dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); + } + return back; +} + |