libcdio 0.83

util.h

Go to the documentation of this file.
00001 /*
00002     Copyright (C) 2004, 2005, 2006, 2008, 2010 Rocky Bernstein <rocky@gnu.org>
00003     Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
00004 
00005     This program is free software: you can redistribute it and/or modify
00006     it under the terms of the GNU General Public License as published by
00007     the Free Software Foundation, either version 3 of the License, or
00008     (at your option) any later version.
00009 
00010     This program is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License
00016     along with this program.  If not, see <http://www.gnu.org/licenses/>.
00017 */
00018 
00019 #ifndef __CDIO_UTIL_H__
00020 #define __CDIO_UTIL_H__
00021 
00028 #include <stdlib.h>
00029 #include <cdio/types.h>
00030 
00031 #undef  MAX
00032 #define MAX(a, b)  (((a) > (b)) ? (a) : (b))
00033 
00034 #undef  MIN
00035 #define MIN(a, b)  (((a) < (b)) ? (a) : (b))
00036 
00037 #undef  IN
00038 #define IN(x, low, high) ((x) >= (low) && (x) <= (high))
00039 
00040 #undef  CLAMP
00041 #define CLAMP(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
00042 
00043 static inline uint32_t
00044 _cdio_len2blocks (uint32_t i_len, uint16_t i_blocksize)
00045 {
00046   uint32_t i_blocks;
00047 
00048   i_blocks = i_len / (uint32_t) i_blocksize;
00049   if (i_len % i_blocksize)
00050     i_blocks++;
00051 
00052   return i_blocks;
00053 }
00054 
00055 /* round up to next block boundary */
00056 static inline unsigned 
00057 _cdio_ceil2block (unsigned offset, uint16_t i_blocksize)
00058 {
00059   return _cdio_len2blocks (offset, i_blocksize) * i_blocksize;
00060 }
00061 
00062 static inline unsigned int
00063 _cdio_ofs_add (unsigned offset, unsigned length, uint16_t i_blocksize)
00064 {
00065   if (i_blocksize - (offset % i_blocksize) < length)
00066     offset = _cdio_ceil2block (offset, i_blocksize);
00067 
00068   offset += length;
00069 
00070   return offset;
00071 }
00072 
00073 static inline const char *
00074 _cdio_bool_str (bool b)
00075 {
00076   return b ? "yes" : "no";
00077 }
00078 
00079 #ifdef __cplusplus
00080 extern "C" {
00081 #endif
00082 
00083 void *
00084 _cdio_memdup (const void *mem, size_t count);
00085 
00086 char *
00087 _cdio_strdup_upper (const char str[]);
00088 
00089 void
00090 _cdio_strfreev(char **strv);
00091 
00092 size_t
00093 _cdio_strlenv(char **str_array);
00094 
00095 char **
00096 _cdio_strsplit(const char str[], char delim);
00097 
00098 uint8_t cdio_to_bcd8(uint8_t n);
00099 uint8_t cdio_from_bcd8(uint8_t p);
00100 
00103 char *cdio_realpath (const char *psz_src, char *psz_dst);
00104 
00105 #ifdef WANT_FOLLOW_SYMLINK_COMPATIBILITY
00106 # define cdio_follow_symlink cdio_realpath
00107 #endif
00108   
00109 #ifdef __cplusplus
00110 }
00111 #endif
00112 
00113 #endif /* __CDIO_UTIL_H__ */
00114 
00115 
00116 /* 
00117  * Local variables:
00118  *  c-file-style: "gnu"
00119  *  tab-width: 8
00120  *  indent-tabs-mode: nil
00121  * End:
00122  */

Generated for libcdio by doxygen 1.7.3