56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <err.h>
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#include <iconv.h>
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static iconv_t conversion_descriptor = 0;
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/*
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* Returns the input string, but converted from UCS-2 to UTF-8. Memory will be
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* allocated, thus the caller has to free the output.
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*
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*/
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char *convert_ucs_to_utf8(char *input) {
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size_t input_size = 2;
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/* UTF-8 may consume up to 4 byte */
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int buffer_size = 8;
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char *buffer = calloc(buffer_size, 1);
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if (buffer == NULL)
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err(EXIT_FAILURE, "malloc() failed\n");
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size_t output_size = buffer_size;
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/* We need to use an additional pointer, because iconv() modifies it */
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char *output = buffer;
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/* We convert the input into UCS-2 big endian */
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if (conversion_descriptor == 0) {
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conversion_descriptor = iconv_open("UTF-8", "UCS-2BE");
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if (conversion_descriptor == 0) {
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fprintf(stderr, "error opening the conversion context\n");
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exit(1);
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}
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}
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/* Get the conversion descriptor back to original state */
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iconv(conversion_descriptor, NULL, NULL, NULL, NULL);
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/* Convert our text */
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int rc = iconv(conversion_descriptor, (void*)&input, &input_size, &output, &output_size);
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if (rc == (size_t)-1) {
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perror("Converting to UCS-2 failed");
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return NULL;
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}
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return buffer;
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}
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