0a7fe7ad57
This will help to avoid truncating a UTF-8 string in the middle of a code point, producing an invalid UTF-8 result.
37 lines
1 KiB
C
37 lines
1 KiB
C
#ifndef STRUTIL_H
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#define STRUTIL_H
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#include <stddef.h>
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// like strncpy, except:
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// - it copies at most n-1 chars
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// - the dest string is nul-terminated
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// - it does not write useless bytes if strlen(src) < n
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// - it returns the number of chars actually written (max n-1) if src has
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// been copied completely, or n if src has been truncated
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size_t
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xstrncpy(char *dest, const char *src, size_t n);
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// join tokens by sep into dst
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// returns the number of chars actually written (max n-1) if no trucation
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// occurred, or n if truncated
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size_t
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xstrjoin(char *dst, const char *const tokens[], char sep, size_t n);
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// quote a string
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// returns the new allocated string, to be freed by the caller
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char *
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strquote(const char *src);
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// return the index to truncate a UTF-8 string at a valid position
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size_t
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utf8_truncation_index(const char *utf8, size_t max_len);
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#ifdef _WIN32
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// convert a UTF-8 string to a wchar_t string
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// returns the new allocated string, to be freed by the caller
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wchar_t *
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utf8_to_wide_char(const char *utf8);
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#endif
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#endif
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