diff options
Diffstat (limited to 'tools/h5jam/h5jam.c')
| -rw-r--r-- | tools/h5jam/h5jam.c | 199 |
1 files changed, 84 insertions, 115 deletions
diff --git a/tools/h5jam/h5jam.c b/tools/h5jam/h5jam.c index ab38f65..4509734 100644 --- a/tools/h5jam/h5jam.c +++ b/tools/h5jam/h5jam.c @@ -21,9 +21,6 @@ /* Name of tool */ #define PROGRAMNAME "h5jam" -#define TRUE 1 -#define FALSE 0 - hsize_t write_pad (int, hsize_t); hsize_t compute_user_block_size (hsize_t); hsize_t copy_some_to_file (int, int, hsize_t, hsize_t, ssize_t); @@ -421,109 +418,88 @@ main (int argc, const char *argv[]) * Return: Success: last byte written in the output. * Failure: Exits program with EXIT_FAILURE value. * - * Programmer: - * - * Modifications: - * *------------------------------------------------------------------------- */ hsize_t -copy_some_to_file (int infid, int outfid, hsize_t startin, hsize_t startout, +copy_some_to_file(int infid, int outfid, hsize_t startin, hsize_t startout, ssize_t limit) { - char buf[1024]; - h5_stat_t sbuf; - int res; - ssize_t tot = 0; - ssize_t howmuch = 0; - ssize_t nchars = -1; -/* used in assertion check - ssize_t ncw = -1; -*/ - ssize_t to; - ssize_t from; - ssize_t toend; - ssize_t fromend; - - if(startin > startout) { - /* this case is prohibited */ - error_msg("copy_some_to_file: panic: startin > startout?\n"); - exit (EXIT_FAILURE); - } - - if(limit < 0) { - res = HDfstat(infid, &sbuf); - if(res < 0) { - error_msg("Can't stat file \n"); - exit (EXIT_FAILURE); - } - - howmuch = (ssize_t)sbuf.st_size; - } - else - howmuch = limit; - - if(howmuch == 0) - return 0; - - /* assert (howmuch > 0) */ - - toend = (ssize_t) startout + howmuch; - fromend = (ssize_t) startin + howmuch; - - if (howmuch > 512) - { - to = toend - 512; - from = fromend - 512; - } - else - { - to = toend - howmuch; - from = fromend - howmuch; - } - - while (howmuch > 0) - { - HDlseek (outfid, (off_t) to, SEEK_SET); - HDlseek (infid, (off_t) from, SEEK_SET); - - if (howmuch > 512) - { - nchars = HDread (infid, buf, (unsigned) 512); - } - else - { - nchars = HDread (infid, buf, (unsigned)howmuch); - } - - if (nchars <= 0) - { - printf ("huh? \n"); - exit (EXIT_FAILURE); - } - /*ncw = */ HDwrite (outfid, buf, (unsigned) nchars); - - /* assert (ncw == nchars) */ - - tot += nchars; - howmuch -= nchars; - if (howmuch > 512) - { - to -= nchars; - from -= nchars; - } - else - { - to -= howmuch; - from -= howmuch; - } - } + char buf[1024]; + h5_stat_t sbuf; + int res; + ssize_t tot = 0; + ssize_t howmuch = 0; + ssize_t nchars = -1; + ssize_t to; + ssize_t from; + ssize_t toend; + ssize_t fromend; + + if(startin > startout) { + /* this case is prohibited */ + error_msg("copy_some_to_file: panic: startin > startout?\n"); + exit (EXIT_FAILURE); + } /* end if */ + + if(limit < 0) { + res = HDfstat(infid, &sbuf); + if(res < 0) { + error_msg("Can't stat file \n"); + HDexit(EXIT_FAILURE); + } /* end if */ + + howmuch = (ssize_t)sbuf.st_size; + } else { + howmuch = limit; + } /* end if */ + + if(0 == howmuch) + return 0; + + toend = (ssize_t) startout + howmuch; + fromend = (ssize_t) startin + howmuch; + + if (howmuch > 512) { + to = toend - 512; + from = fromend - 512; + } else { + to = toend - howmuch; + from = fromend - howmuch; + } /* end if */ + + while (howmuch > 0) { + HDlseek(outfid, (off_t) to, SEEK_SET); + HDlseek(infid, (off_t) from, SEEK_SET); + + if (howmuch > 512) { + nchars = HDread(infid, buf, (unsigned) 512); + } else { + nchars = HDread(infid, buf, (unsigned)howmuch); + } /* end if */ + + if (nchars <= 0) { + error_msg("Read error \n"); + HDexit(EXIT_FAILURE); + } /* end if */ + + if(HDwrite (outfid, buf, (unsigned) nchars) < 0) { + error_msg("Write error \n"); + HDexit(EXIT_FAILURE); + } - /* assert howmuch == 0 */ - /* assert tot == limit */ + tot += nchars; + howmuch -= nchars; + if(howmuch > 512) { + to -= nchars; + from -= nchars; + } else { + to -= howmuch; + from -= howmuch; + } /* end if */ + } /* end while */ - return ((hsize_t) tot + (hsize_t) startout); -} + return (hsize_t)tot + (hsize_t)startout; +} /* end copy_some_to_file() */ /*------------------------------------------------------------------------- @@ -539,28 +515,21 @@ copy_some_to_file (int infid, int outfid, hsize_t startin, hsize_t startout, * * Return: Success: last byte written in the output. * Failure: Exits program with EXIT_FAILURE value. - * - * Programmer: - * - * Modifications: - * *------------------------------------------------------------------------- */ -hsize_t -compute_user_block_size (hsize_t ublock_size) +H5_ATTR_CONST hsize_t +compute_user_block_size(hsize_t ublock_size) { - hsize_t where = 512; + hsize_t where = 512; - if (ublock_size == 0) - return 0; + if(0 == ublock_size) + return 0; - while (where < ublock_size) - { - where *= 2; - } + while(where < ublock_size) + where *= 2; - return (where); -} + return where; +} /* end compute_user_block_size() */ /* * Write zeroes to fill the file from 'where' to 512, 1024, etc. bytes. |