This is a simple string library for C. Notable features are a dynamic string API and a suite of UTF-8, UTF-16 and UTF-32 conversion routines. Unicode conversion routines are implemented for all combinations, with the exception of converting between different endians. Swapping endians can be done separately.
I've built this to service my own requirements, but if there's something you might find useful let me know and I'll consider adding support (no guarantees). I have plans for the following APIs:
utf8_sprintf()
utf8_vsprintf()
utf8_snprintf()
utf8_vsnprintf()
utf8_strcasecmp()
utf8_strncasecmp()
Documentation can be found in libcstr.h. It's a single file library, but there's a libcstr.c file for those who prefer separate .h and .c files.
I don't maintain version numbers nor release notes for this project. Use the Git log to see what's changed. I make no guarantees on API stability and may change anything at any time, but I try to keep breaking changes to a minimum.
Public domain or MIT-0, whichever you prefer.
Function List
Standard Library Replacements
utf8_strlen
utf8_strcpy
utf8_strcpy_s
utf8_strncpy_s
utf8_strcat_s
utf8_strncat_s
utf8_atoi_s
Dynamic Strings
cstr_alloc
cstr_free
cstr_newn
cstr_new
cstr_newv
cstr_newf
cstr_setn
cstr_set
cstr_catn
cstr_cat
cstr_len
cstr_cap
cstr_find
cstr_find_last
cstr_substr_tagged
cstr_new_substr_tagged
cstr_replace_range
cstr_replace_range_tagged
Unicode Conversion
utf8_to_utf16ne
utf8_to_utf16le
utf8_to_utf16be
utf8_to_utf16
utf8_to_utf32ne
utf8_to_utf32le
utf8_to_utf32be
utf8_to_utf32
utf16ne_to_utf8
utf16le_to_utf8
utf16be_to_utf8
utf16_to_utf8
utf16ne_to_utf32ne
utf16le_to_utf32le
utf16be_to_utf32be
utf16_to_utf32
utf32ne_to_utf8
utf32le_to_utf8
utf32be_to_utf8
utf32_to_utf8
utf32ne_to_utf16ne
utf32le_to_utf16le
utf32be_to_utf16be
utf32_to_utf16
utf8_to_utf16_len
utf8_to_utf16ne_len
utf8_to_utf16le_len
utf8_to_utf16be_len
utf8_to_utf32_len
utf8_to_utf32ne_len
utf8_to_utf32le_len
utf8_to_utf32be_len
utf16ne_to_utf8_len
utf16le_to_utf8_len
utf16be_to_utf8_len
utf16_to_utf8_len
utf16ne_to_utf32_len
utf16le_to_utf32_len
utf16be_to_utf32_len
utf16ne_to_utf32ne_len
utf16le_to_utf32le_len
utf16be_to_utf32be_len
utf16_to_utf32_len
utf32ne_to_utf8_len
utf32le_to_utf8_len
utf32be_to_utf8_len
utf32_to_utf8_len
utf32ne_to_utf16_len
utf32le_to_utf16_len
utf32be_to_utf16_len
utf32ne_to_utf16ne_len
utf32le_to_utf16le_len
utf32be_to_utf16be_len
utf32_to_utf16_len
utf16_swap_endian
utf32_swap_endian
utf8_has_bom
utf16_has_bom
utf32_has_bom
utf16_is_bom_le
utf16_is_bom_be
utf32_is_bom_le
utf32_is_bom_be