150 lines
4.6 KiB
C
150 lines
4.6 KiB
C
/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
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/* vim: set noet ts=8 sts=8 sw=8 : */
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/**
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* Utility functions for the Libisofs library.
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*/
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#ifndef LIBISO_UTIL_H
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#define LIBISO_UTIL_H
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#include <stdint.h>
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#include <time.h>
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#include <wchar.h>
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#ifndef MAX
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# define MAX(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef MIN
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# define MIN(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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extern inline int div_up(int n, int div)
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{
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return (n + div - 1) / div;
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}
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extern inline int round_up(int n, int mul)
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{
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return div_up(n, mul) * mul;
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}
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char *convert_str(const char *str, const char *icharset, const char *ocharset);
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wchar_t *towcs(const char *);
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char *str2ascii(const char*, const char *);
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uint16_t *str2ucs(const char *, const char *);
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char *str2d_char(const char*, const char *);
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char *str2a_char(const char*, const char *);
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/**
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* Create a level 1 directory identifier.
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*/
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char *iso_1_dirid(const char *src, const char *);
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/**
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* Create a level 2 directory identifier.
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*/
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char *iso_2_dirid(const char *src, const char *);
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/**
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* Create a directory identifier with relaxed constraints
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*/
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char *iso_r_dirid(const char *src, const char *icharset, int flags);
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/**
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* Create a level 1 file identifier that consists of a name, extension and
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* version number. The resulting string will have a file name of maximum
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* length 8, followed by a separator (.), an optional extension of maximum
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* length 3, followed by a separator (;) and a version number (digit 1).
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* @return NULL if the original name and extension both are of length 0.
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*/
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char *iso_1_fileid(const char *src, const char *);
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/**
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* Create a level 2 file identifier that consists of a name, extension and
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* version number. The combined file name and extension length will not exceed
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* 30, the name and extension will be separated (.), and the extension will be
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* followed by a separator (;) and a version number (digit 1).
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* @return NULL if the original name and extension both are of length 0.
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*/
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char *iso_2_fileid(const char *src, const char *);
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/**
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* Create a file identifier with relaxed constraints.
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*/
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char *iso_r_fileid(const char *src, const char *icharset, int flags);
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/**
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* Create a Joliet file or directory identifier that consists of a name,
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* extension and version number. The combined name and extension length will
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* not exceed 128 bytes, the name and extension will be separated (.),
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* and the extension will be followed by a separator (;) and a version number
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* (digit 1). All characters consist of 2 bytes and the resulting string is
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* NULL-terminated by a 2-byte NULL. Requires the locale to be set correctly.
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*
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* @param size will be set to the size (in bytes) of the identifier.
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* @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.
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*/
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uint16_t *iso_j_id(const char *src, const char *icharset);
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/**
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* FIXME: what are the requirements for these next two? Is this for RR?
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*
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* Create a POSIX portable file name that consists of a name and extension.
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* The resulting file name will not exceed 250 characters.
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* @return NULL if the original name and extension both are of length 0.
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*/
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char *iso_p_fileid(const char *src, const char *);
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/**
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* Create a POSIX portable directory name.
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* The resulting directory name will not exceed 250 characters.
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* @return NULL if the original name is of length 0.
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*/
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char *iso_p_dirid(const char *src);
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void iso_lsb(uint8_t *buf, uint32_t num, int bytes);
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void iso_msb(uint8_t *buf, uint32_t num, int bytes);
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void iso_bb(uint8_t *buf, uint32_t num, int bytes);
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uint32_t iso_read_lsb(const uint8_t *buf, int bytes);
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uint32_t iso_read_msb(const uint8_t *buf, int bytes);
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/**
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* if error != NULL it will be set to 1 if LSB and MSB integers
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* don't match
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*/
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uint32_t iso_read_bb(const uint8_t *buf, int bytes, int *error);
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/** Records the date/time into a 7 byte buffer (9.1.5) */
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void iso_datetime_7(uint8_t *buf, time_t t);
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/** Records the date/time into a 17 byte buffer (8.4.26.1) */
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void iso_datetime_17(uint8_t *buf, time_t t);
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time_t iso_datetime_read_7(const uint8_t *buf);
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time_t iso_datetime_read_17(const uint8_t *buf);
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/**
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* Like strlen, but for Joliet strings.
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*/
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size_t ucslen(const uint16_t *str);
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/**
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* Like strcmp, but for Joliet strings.
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*/
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int ucscmp(const uint16_t *s1, const uint16_t *s2);
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/**
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* Copy up to \p len chars from \p buf and return this newly allocated
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* string. The new string is null-terminated.
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* TODO it would be great to return NULL is the original string was all
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* white spaces.
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*/
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char *strcopy(const char *buf, size_t len);
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#endif /* LIBISO_UTIL_H */
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