[Info-vax] A SYS$ version of F$EDIT

[Dave Froble]

On 6/1/2019 9:07 AM, VAXman- at SendSpamHere.ORG wrote:
> In article <qcsl35$8us$1 at dont-email.me>, Dave Froble <davef at tsoft-inc.com> writes:
>> On 5/31/2019 7:41 PM, seasoned_geek wrote:
>>> Admittedly it has been a long time since I wrote this book
>>>
>>> http://www.theminimumyouneedtoknow.com/app_book.html
>>>
>>> and it's Friday after a few Chardonnays, but given OpenVMS is being ported to x86 (and my feelings are widely known on that) the one thing they should add to make C not suck so much on the platform is a SYS$EDIT which mirrors F$EDIT in functionality.
>>>
>>>
>>> Just my 0.0002 cents worth.
>>>
>>
>> Well, C is going to suck, whatever ....
>>
>> So, what does F$EDIT do?
>>
>>    F$EDIT
>>
>>         Edits the character string based on the edits specified in the
>>         edit-list argument.
>>
>>         Format
>>
>>           F$EDIT(string, edit-list)
>>
>>        edit-list
>>
>>           Specifies a character string containing one or more of the
>>           following keywords which specify the types of edits to be made
>>           to the string:
>>
>>           Edit          Action
>>
>>           COLLAPSE      Removes all spaces or tabs.
>>           COMPRESS      Replaces multiple spaces or tabs with a single
>>                         space.
>>           LOWERCASE     Changes all uppercase characters to lowercase.
>>           TRIM          Removes leading and trailing spaces or tabs.
>>           UNCOMMENT     Removes comments.
>>           UPCASE        Changes all lowercase characters to uppercase.
>>
>> Ok, useful.  But, why don't we take a look at Basic's EDIT$() function?
>>
>> EDIT$
>>
>>     The  EDIT$  function  performs  one  or  more  string  editing
>> functions,
>>     depending on the value of its integer argument.
>>
>>     Example
>>
>>     New_string$ = EDIT$(Old_string$, 48%)
>>
>>            str-var = EDIT$(str-exp, int-exp)
>>
>>       Values   Effect
>>
>>       1%       Trim parity bits
>>       2%       Discard all spaces and tabs
>>       4%       Discard characters: CR, LF, FF, ESC, RUBOUT, and NULL
>>       8%       Discard leading spaces and tabs
>>       16%      Reduce spaces and tabs to one space
>>       32%      Convert lowercase to uppercase
>>       64%      Convert [ to ( and ] to )
>>       128%     Discard trailing spaces and tabs
>>       256%     Do not alter characters inside quotes
>>
>> Guess Basic doesn't like converting to lowercase.  Can't have everything.
>>
>> So, it seems mostly everything is already in VMS, one just needs to be
>> able to invoke it.
>>
>> Having fun ....
>>
>> :-)
>
> The functions performed by F$edit can be had, albeit perhaps not in a single
> call, via STR$ RTL functions.>
>
> RTFM. ;)
>

Don't be spoiling my fun ...

-- 
David Froble                       Tel: 724-529-0450
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