mirror of https://github.com/FreeRDP/FreeRDP
155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Client
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* Unicode Utils
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <freerdp/utils/memory.h>
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#include <freerdp/utils/unicode.h>
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/* Convert pin/in_len from WINDOWS_CODEPAGE - return like xstrdup, 0-terminated */
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char* freerdp_uniconv_in(UNICONV *uniconv, unsigned char* pin, size_t in_len)
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{
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unsigned char *conv_pin = pin;
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size_t conv_in_len = in_len;
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char *pout = xmalloc(in_len + 1), *conv_pout = pout;
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size_t conv_out_len = in_len;
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#ifdef HAVE_ICONV
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if (iconv(uniconv->in_iconv_h, (ICONV_CONST char **) &conv_pin, &conv_in_len, &conv_pout, &conv_out_len) == (size_t) - 1)
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{
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/* TODO: xrealloc if conv_out_len == 0 - it shouldn't be needed, but would allow a smaller initial alloc ... */
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printf("freerdp_uniconv_in: iconv failure\n");
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return 0;
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}
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#else
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while (conv_in_len >= 2)
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{
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if ((signed char)(*conv_pin) < 0)
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{
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printf("freerdp_uniconv_in: wrong input conversion of char %d\n", *conv_pin);
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}
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*conv_pout++ = *conv_pin++;
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if ((*conv_pin) != 0)
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{
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printf("freerdp_uniconv_in: wrong input conversion skipping non-zero char %d\n", *conv_pin);
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}
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conv_pin++;
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conv_in_len -= 2;
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conv_out_len--;
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}
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#endif
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if (conv_in_len > 0)
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{
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printf("freerdp_uniconv_in: conversion failure - %d chars left\n", (int) conv_in_len);
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}
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*conv_pout = 0;
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return pout;
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}
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/* Convert str from DEFAULT_CODEPAGE to WINDOWS_CODEPAGE and return buffer like xstrdup.
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* Buffer is 0-terminated but that is not included in the returned length. */
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char* freerdp_uniconv_out(UNICONV *uniconv, char *str, size_t *pout_len)
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{
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size_t ibl = strlen(str), obl = 2 * ibl; /* FIXME: worst case */
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char *pin = str, *pout0 = xmalloc(obl + 2), *pout = pout0;
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#ifdef HAVE_ICONV
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if (iconv(uniconv->out_iconv_h, (ICONV_CONST char **) &pin, &ibl, &pout, &obl) == (size_t) - 1)
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{
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printf("freerdp_uniconv_out: iconv() error\n");
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return NULL;
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}
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#else
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while ((ibl > 0) && (obl > 0))
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{
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if ((signed char)(*pin) < 0)
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{
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return NULL;
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}
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*pout++ = *pin++;
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*pout++ = 0;
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ibl--;
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obl -= 2;
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}
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#endif
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if (ibl > 0)
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{
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printf("freerdp_uniconv_out: string not fully converted - %d chars left\n", (int) ibl);
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}
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*pout_len = pout - pout0;
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*pout++ = 0; /* Add extra double zero termination */
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*pout = 0;
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return pout0;
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}
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/* Uppercase a unicode string */
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void freerdp_uniconv_uppercase(UNICONV *uniconv, char *wstr, int length)
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{
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int i;
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char* p;
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p = wstr;
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for (i = 0; i < length; i++)
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{
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if (p[i * 2] >= 'a' && p[i * 2] <= 'z')
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p[i * 2] = p[i * 2] - 32;
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}
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}
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UNICONV* freerdp_uniconv_new()
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{
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UNICONV *uniconv = xmalloc(sizeof(UNICONV));
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memset(uniconv, '\0', sizeof(UNICONV));
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#ifdef HAVE_ICONV
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uniconv->iconv = 1;
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uniconv->in_iconv_h = iconv_open(DEFAULT_CODEPAGE, WINDOWS_CODEPAGE);
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if (errno == EINVAL)
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{
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printf("Error opening iconv converter to %s from %s\n", DEFAULT_CODEPAGE, WINDOWS_CODEPAGE);
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}
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uniconv->out_iconv_h = iconv_open(WINDOWS_CODEPAGE, DEFAULT_CODEPAGE);
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if (errno == EINVAL)
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{
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printf("Error opening iconv converter to %s from %s\n", WINDOWS_CODEPAGE, DEFAULT_CODEPAGE);
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}
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#endif
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return uniconv;
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}
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void freerdp_uniconv_free(UNICONV *uniconv)
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{
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if (uniconv != NULL)
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{
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#ifdef HAVE_ICONV
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iconv_close(uniconv->in_iconv_h);
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iconv_close(uniconv->out_iconv_h);
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#endif
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xfree(uniconv);
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}
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}
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