/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */ /* vim: set noet ts=8 sts=8 sw=8 : */ /** * Utility functions for the Libisofs library. */ #ifndef LIBISO_UTIL_H #define LIBISO_UTIL_H #include #include #include #ifndef MAX # define MAX(a, b) (((a) > (b)) ? (a) : (b)) #endif #ifndef MIN # define MIN(a, b) (((a) < (b)) ? (a) : (b)) #endif extern inline int div_up(int n, int div) { return (n + div - 1) / div; } extern inline int round_up(int n, int mul) { return div_up(n, mul) * mul; } wchar_t *towcs(const char *); char *wcstoascii(const wchar_t *); uint16_t *wcstoucs(const wchar_t*); /** * Create a level 1 directory identifier. */ char *iso_1_dirid(const wchar_t *src); /** * Create a level 2 directory identifier. */ char *iso_2_dirid(const wchar_t *src); /** * Create a level 1 file identifier that consists of a name, extension and * version number. The resulting string will have a file name of maximum * length 8, followed by a separator (.), an optional extension of maximum * length 3, followed by a separator (;) and a version number (digit 1). * @return NULL if the original name and extension both are of length 0. */ char *iso_1_fileid(const wchar_t *src); /** * Create a level 2 file identifier that consists of a name, extension and * version number. The combined file name and extension length will not exceed * 30, the name and extension will be separated (.), and the extension will be * followed by a separator (;) and a version number (digit 1). * @return NULL if the original name and extension both are of length 0. */ char *iso_2_fileid(const wchar_t *src); /** * Create a Joliet file or directory identifier that consists of a name, * extension and version number. The combined name and extension length will * not exceed 128 bytes, the name and extension will be separated (.), * and the extension will be followed by a separator (;) and a version number * (digit 1). All characters consist of 2 bytes and the resulting string is * NULL-terminated by a 2-byte NULL. Requires the locale to be set correctly. * * @param size will be set to the size (in bytes) of the identifier. * @return NULL if the original name and extension both are of length 0 or the conversion from the current codeset to UCS-2BE is not available. */ uint16_t *iso_j_id(const wchar_t *src); /** * FIXME: what are the requirements for these next two? Is this for RR? * * Create a POSIX portable file name that consists of a name and extension. * The resulting file name will not exceed 250 characters. * @return NULL if the original name and extension both are of length 0. */ char *iso_p_fileid(const wchar_t *src); /** * Create a POSIX portable directory name. * The resulting directory name will not exceed 250 characters. * @return NULL if the original name is of length 0. */ char *iso_p_dirid(const wchar_t *src); void iso_lsb(uint8_t *buf, uint32_t num, int bytes); void iso_msb(uint8_t *buf, uint32_t num, int bytes); void iso_bb(uint8_t *buf, uint32_t num, int bytes); uint32_t iso_read_lsb(const uint8_t *buf, int bytes); uint32_t iso_read_msb(const uint8_t *buf, int bytes); uint32_t iso_read_bb(const uint8_t *buf, int bytes); /** Records the date/time into a 7 byte buffer (9.1.5) */ void iso_datetime_7(uint8_t *buf, time_t t); /** Records the date/time into a 17 byte buffer (8.4.26.1) */ void iso_datetime_17(uint8_t *buf, time_t t); time_t iso_datetime_read_7(const uint8_t *buf); time_t iso_datetime_read_17(const uint8_t *buf); /** * Like strlen, but for Joliet strings. */ size_t ucslen(const uint16_t *str); /** * Like strcmp, but for Joliet strings. */ int ucscmp(const uint16_t *s1, const uint16_t *s2); #endif /* LIBISO_UTIL_H */