83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2009 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include <errno.h>
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#include "gtm_unistd.h"
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#include "gtm_string.h"
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#include "gdsroot.h"
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#include "gdsbt.h"
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/* gets the full path name for a given file name. Prepends the CWD, even if the file does not exist */
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boolean_t get_full_path(char *orig_fn, unsigned int orig_len, char *full_fn, unsigned int *full_len, int max_len, uint4 *status)
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{
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char *cptr, *c1;
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char cwdbuf[MAX_FN_LEN + 1];
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int cwd_len;
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int i, length;
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char *getcwd_res;
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error_def(ERR_FILENAMETOOLONG);
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if ('/' == *orig_fn)
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{
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/* The original path is already complete */
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length = orig_len;
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memcpy(full_fn, orig_fn, length);
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} else
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{
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if (NULL == GETCWD(cwdbuf, SIZEOF(cwdbuf), getcwd_res))
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{
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*status = errno;
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return FALSE;
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}
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cwd_len = STRLEN(cwdbuf);
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cptr = orig_fn;
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if (('.' == *cptr) && ('.' == *(cptr + 1)))
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{
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for (i = 1; ; ++i)
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{
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cptr += 2;
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if (('.' != *(cptr + 1)) || ('.' != *(cptr + 2)))
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break;
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++cptr;
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}
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for (c1 = &cwdbuf[cwd_len - 1]; i > 0; --i)
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while ('/' != *c1)
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--c1;
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if ((length = (int)((c1 - cwdbuf) + orig_len - (cptr - orig_fn))) + 1 > max_len)
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{
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*status = ERR_FILENAMETOOLONG;
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return FALSE;
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}
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memcpy(full_fn, cwdbuf, c1 - cwdbuf);
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memcpy(full_fn + (c1 - cwdbuf), cptr, orig_len - (cptr - orig_fn));
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} else
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{
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if ('.' == *cptr && '/' == (*(cptr + 1)))
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cptr += 2;
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if ((length = (int)(cwd_len + 1 + orig_len - (cptr - orig_fn))) + 1 > max_len)
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{
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*status = ERR_FILENAMETOOLONG;
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return FALSE;
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}
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strcpy(full_fn, cwdbuf);
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full_fn[cwd_len] = '/';
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memcpy(full_fn + cwd_len + 1, cptr, orig_len - (cptr - orig_fn));
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}
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}
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*full_len = length;
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full_fn[length] = '\0';
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return TRUE;
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}
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