diff options
Diffstat (limited to 'mysys/mf_format.c')
| -rw-r--r-- | mysys/mf_format.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/mysys/mf_format.c b/mysys/mf_format.c new file mode 100644 index 00000000..57ac3ea4 --- /dev/null +++ b/mysys/mf_format.c @@ -0,0 +1,139 @@ +/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + +#include "mysys_priv.h" +#include <m_string.h> + +/* + Formats a filename with possible replace of directory of extension + Function can handle the case where 'to' == 'name' + For a description of the flag values, consult my_sys.h + The arguments should be in unix format. +*/ + +char * fn_format(char * to, const char *name, const char *dir, + const char *extension, uint flag) +{ + char dev[FN_REFLEN], buff[FN_REFLEN], *pos, *startpos; + const char *ext; + reg1 size_t length; + size_t dev_length; + DBUG_ENTER("fn_format"); + DBUG_ASSERT(name != NULL); + DBUG_ASSERT(extension != NULL); + DBUG_PRINT("enter",("name: %s dir: %s extension: %s flag: %d", + name,dir,extension,flag)); + + /* Copy and skip directory */ + name+=(length=dirname_part(dev, (startpos=(char *) name), &dev_length)); + if (length == 0 || (flag & MY_REPLACE_DIR)) + { + /* Use given directory */ + convert_dirname(dev,dir,NullS); /* Fix to this OS */ + } + else if ((flag & MY_RELATIVE_PATH) && !test_if_hard_path(dev)) + { + /* Put 'dir' before the given path */ + strmake_buf(buff, dev); + pos=convert_dirname(dev,dir,NullS); + strmake(pos,buff,sizeof(buff)-1- (int) (pos-dev)); + } + + if (flag & MY_PACK_FILENAME) + pack_dirname(dev,dev); /* Put in ./.. and ~/.. */ + if (flag & MY_UNPACK_FILENAME) + (void) unpack_dirname(dev,dev); /* Replace ~/.. with dir */ + + if (!(flag & MY_APPEND_EXT) && + (pos= (char*) strchr(name,FN_EXTCHAR)) != NullS) + { + if ((flag & MY_REPLACE_EXT) == 0) /* If we should keep old ext */ + { + length=strlength(name); /* Use old extension */ + ext = ""; + } + else + { + length= (size_t) (pos-(char*) name); /* Change extension */ + ext= extension; + } + } + else + { + length=strlength(name); /* No ext, use the now one */ + ext=extension; + } + + if (strlen(dev)+length+strlen(ext) >= FN_REFLEN || length >= FN_LEN ) + { + /* To long path, return original or NULL */ + size_t tmp_length; + if (flag & MY_SAFE_PATH) + DBUG_RETURN(NullS); + tmp_length= strlength(startpos); + DBUG_PRINT("error",("dev: '%s' ext: '%s' length: %u",dev,ext, + (uint) length)); + (void) strmake(to,startpos,MY_MIN(tmp_length,FN_REFLEN-1)); + } + else + { + if (to == startpos) + { + bmove(buff,(uchar*) name,length); /* Save name for last copy */ + name=buff; + } + pos=strmake(strmov(to,dev),name,length); + (void) strmov(pos,ext); /* Don't convert extension */ + } + if (flag & MY_RETURN_REAL_PATH) + (void) my_realpath(to, to, MYF(0)); + else if (flag & MY_RESOLVE_SYMLINKS) + { + strmov(buff,to); + (void) my_readlink(to, buff, MYF(0)); + } + DBUG_RETURN(to); +} /* fn_format */ + + +/* + strlength(const string str) + Return length of string with end-space:s not counted. +*/ + +size_t strlength(const char *str) +{ + reg1 const char * pos; + reg2 const char * found; + DBUG_ENTER("strlength"); + + pos= found= str; + + while (*pos) + { + if (*pos != ' ') + { + while (*++pos && *pos != ' ') {}; + if (!*pos) + { + found=pos; /* String ends here */ + break; + } + } + found=pos; + while (*++pos == ' ') {}; + } + DBUG_RETURN((size_t) (found - str)); +} /* strlength */ |