diff options
Diffstat (limited to 'src/H5system.c')
| -rw-r--r-- | src/H5system.c | 129 |
1 files changed, 119 insertions, 10 deletions
diff --git a/src/H5system.c b/src/H5system.c index 4baebc5..eb09b15 100644 --- a/src/H5system.c +++ b/src/H5system.c @@ -757,7 +757,7 @@ done: */ int Wgettimeofday(struct timeval *tv, struct timezone *tz) - { +{ union { unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */ FILETIME ft; @@ -783,7 +783,42 @@ Wgettimeofday(struct timeval *tv, struct timezone *tz) /* Always return 0 as per Open Group Base Specifications Issue 6. Do not set errno on error. */ return 0; -} +} /* end Wgettimeofday() */ + + +/*------------------------------------------------------------------------- + * Function: Wsetenv + * + * Purpose: Wrapper function for setenv on Windows systems. + * Interestingly, getenv *is* available in the Windows + * POSIX layer, just not setenv. + * + * Return: Success: 0 + * Failure: non-zero error code + * + * Programmer: Dana Robinson + * February 2016 + * + *------------------------------------------------------------------------- + */ +int +Wsetenv(const char *name, const char *value, int overwrite) +{ + size_t bufsize; + errno_t err; + + /* If we're not overwriting, check if the environment variable exists. + * If it does (i.e.: the required buffer size to store the variable's + * value is non-zero), then return an error code. + */ + if(!overwrite) { + err = getenv_s(&bufsize, NULL, 0, name); + if (err || bufsize) + return (int)err; + } /* end if */ + + return (int)_putenv_s(name, value); +} /* end Wsetenv() */ #ifdef H5_HAVE_WINSOCK2_H #pragma comment(lib, "advapi32.lib") @@ -881,26 +916,25 @@ Wflock(int fd, int operation) { /*------------------------------------------------------------------------- - * Function: H5_build_extpath + * Function: H5_build_extpath * - * Purpose: To build the path for later searching of target file for external - * link. This path can be either: + * Purpose: To build the path for later searching of target file for external + * links and external files. This path can be either: * 1. The absolute path of NAME * or * 2. The current working directory + relative path of NAME * - * Return: Success: 0 - * Failure: -1 + * Return: SUCCEED/FAIL * * Programmer: Vailin Choi - * April 2, 2008 + * April 2, 2008 * *------------------------------------------------------------------------- */ #define MAX_PATH_LEN 1024 herr_t -H5_build_extpath(const char *name, char **extpath/*out*/) +H5_build_extpath(const char *name, char **extpath /*out*/) { char *full_path = NULL; /* Pointer to the full path, as built or passed in */ char *cwdpath = NULL; /* Pointer to the current working directory path */ @@ -998,5 +1032,80 @@ done: H5MM_xfree(new_name); FUNC_LEAVE_NOAPI(ret_value) -} /* H5_build_extpath() */ +} /* end H5_build_extpath() */ + + +/*-------------------------------------------------------------------------- + * Function: H5_combine_path + * + * Purpose: If path2 is relative, interpret path2 as relative to path1 + * and store the result in full_name. Otherwise store path2 + * in full_name. + * + * Return: SUCCEED/FAIL + * + * Programmer: Steffen Kiess + * June 22, 2015 + *-------------------------------------------------------------------------- + */ +herr_t +H5_combine_path(const char* path1, const char* path2, char **full_name /*out*/) +{ + size_t path1_len; /* length of path1 */ + size_t path2_len; /* length of path2 */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT + + HDassert(path1); + HDassert(path2); + + path1_len = HDstrlen(path1); + path2_len = HDstrlen(path2); + + if(*path1 == '\0' || H5_CHECK_ABSOLUTE(path2)) { + + /* If path1 is empty or path2 is absolute, simply use path2 */ + if(NULL == (*full_name = (char *)H5MM_strdup(path2))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") + + } /* end if */ + else if(H5_CHECK_ABS_PATH(path2)) { + + /* On windows path2 is a path absolute name */ + if (H5_CHECK_ABSOLUTE(path1) || H5_CHECK_ABS_DRIVE(path1)) { + /* path1 is absolute or drive absolute and path2 is path absolute. + * Use the drive letter of path1 + path2 + */ + if(NULL == (*full_name = (char *)H5MM_malloc(path2_len + 3))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate path2 buffer") + HDsnprintf(*full_name, (path2_len + 3), "%c:%s", path1[0], path2); + } /* end if */ + else { + /* On windows path2 is path absolute name ("\foo\bar"), + * path1 does not have a drive letter (i.e. is "a\b" or "\a\b"). + * Use path2. + */ + if(NULL == (*full_name = (char *)H5MM_strdup(path2))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") + } /* end else */ + + } /* end else if */ + else { + + /* Relative path2: + * Allocate a buffer to hold path1 + path2 + possibly the delimiter + * + terminating null byte + */ + if(NULL == (*full_name = (char *)H5MM_malloc(path1_len + path2_len + 2))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate filename buffer") + + /* Compose the full file name */ + HDsnprintf(*full_name, (path1_len + path2_len + 2), "%s%s%s", path1, + (H5_CHECK_DELIMITER(path1[path1_len - 1]) ? "" : H5_DIR_SEPS), path2); + } /* end else */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5_combine_name() */ |