Splits a filename into its component parts; that is, the pathname, basename and extension.
Syntax:
call "CBL_SPLIT_FILENAME" using sj-param
split-buffer
returning status-code
Parameters
-
sj-param
- Group defined as
cblt-splitjoin-buf
containing:
01 cblt-splitjoin-buf typedef.
03 cblte-sj-param-length cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-split-join-flag1 cblt-x1-compx. *> pic x comp-x.
03 cblte-sj-split-join-flag2 cblt-x1-compx. *> pic x comp-x.
03 cblte-sj-device-offset cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-device-length cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-basename-offset cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-basename-length cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-extension-offset cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-extension-length cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-total-length cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-split-buf-len cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-join-buf-len cblt-x2-compx. *> pic x(2) comp-x.
03 cblte-sj-first-component-length cblt-x2-compx. *> pic x(2) comp-x.
-
split-buffer
- Call prototype: pic x(n).
- Picture: pic x(n).
-
status-code
- See Library Routines - Key
On Entry:
-
param-length
- Length of
sj-param in bytes, including the two bytes for
cblte-sj-param-length. The normal value for
cblte-sj-param-length is 24.
-
splitjoin-flg1
-
- Bit 1
-
| 1
|
The strings are null-terminated
|
| 0
|
The strings are space-terminated
|
- Bit 0
-
| 1
|
The new filename is folded to upper case
|
| 0
|
The original case is preserved.
|
-
split-buf-len
- Length of
split-buffer
-
split-buffer
- The string to split.
On Exit:
-
cblte-sj-splitjoin-flg2
-
| Bit
|
Meaning
|
| 2
|
Set if there is a significant space in the filename
|
| 1
|
Set if there is a wildcard in the path
|
| 0
|
Set if there is a wildcard in basename or extension
|
-
cblte-sj-path-strt
- Start of pathname in
split-buffer, from one.
-
cblte-sj-path-len
- Length of pathname; zero if there is none. This includes any following colon (:).
-
cblte-sj-basename-strt
- Start of basename in
split-buffer, from one.
-
cblte-sj-basename-len
- Length of basename; zero if there is none. This does not include the following period (.).
-
cblte-sj-extension-strt
- Start of extension in
split-buffer, from one.
-
cblte-sj-extension-len
- Length of extension; zero if there is none. This does not include the preceding period (.).
-
cblte-sj-total-length
- Total number of characters in the string.
-
cblte-sj-first-path-len
- Number of characters up to and including the first backslash (\) or slash (/) or colon (:); if
split-buffer contains none of these, this
parameter =
cblte-sj-path-len.
-
split-buffer
- If bit 0 of
cblte-sj-splitjoin-flg1 is set then this routine folds to upper case. If bit 1 of
cblte-sj-splitjoin-flg1 is unset and
split-buffer was a quoted name, possibly containing embedded spaces/quotes, then any unrequired quote characters are removed.
-
status-code
- Return status:
| 0
|
Success
|
| 4
|
Illegal filename
|
Comments:
This routine can be made to fold to upper case by setting the least significant bit (bit 0) of cblte-sj-splitjoin-flg1. If this bit is not set, the case is preserved.
This routine can accept either null-terminated or space-terminated strings. Setting the second least significant bit (bit 1) of cblte-sj-splitjoin-flg1 results in the routine expecting null-terminated strings. If this bit is not set, space-terminated strings are expected.
If there are two or more periods (.) in the filename (not counting periods (.) in the pathname), the extension returned consists of the characters between the last period (.) and the end of the filename. The basename contains everything up to, but not including, the last period (.).
To make a distinction between filenames with no extension and filenames with spaces extension (that is, basenames whose last character is a period (.)), if the extension is spaces cblte-sj-extension-len is 1 and cblte-sj-extension-strt points to the last period (.).