[REBOL] Re: adding line hints when building blocks - P.S.:
Thanks Ingo and Carl, It looks like we can get pretty close, and get all the way there by stringifying the block, but no simple solution. I think, as a general solution, the pretty printer approach could work really well. More overhead, but that would only be an issue for large files or high throughput systems. Thanks again! --Gregg -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: adding line hints when building blocks - P.S.:
Hi Gregg, seems I have to add a little background info on my last post, at least _I_ would have had trouble to understand what I meant, hadn't it been written by me ... > Gregg Irwin wrote: > Suppose I want to build a block in code, which will be written to a > file, and I want it to be formatted nicely in the file (i.e. with > newlines and indentation). Is there any way to include formatting > hints when building a block, or do you have to build a string and > blockify it? Well, that what I would do: create a block, however it looks, and stringify it on save (use a pretty printer, e.g. the one in my previous post) to create a pretty printed output. Kind regards, Ingo -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: adding line hints when building blocks
Hi Gregg, Gregg Irwin wrote: > hi Ammon, > > << Just a shot in the dark (I am still not sure what you are attempting, an > example maybe?) Have you tried placing the word 'newline in where you > wanted > a new line? and I think that there is a similar one for tab IIRC. >> > > Yup. Tried various combinations of things, reducing, composing, etc. but no > luck so far. > > The goal is to write out, to a file, something like this: > > item-1-id [ > value 0 > mail [EMAIL PROTECTED] > ] > > item-2-id [ > value 1 > mail [EMAIL PROTECTED] > ] I guess writing a pretty printer is your only chance, maybe something like this will do: a: [item-1-id [value 0 mail [EMAIL PROTECTED]] item-2-id [value 1 mail [EMAIL PROTECTED]]] parse a [ some [ set id word! (print [id "["]) into [ some [ set name word! set val any-type! (print [ " " name val ]) ] (print "]") ] ] ] which gives item-1-id [ value 0 mail [EMAIL PROTECTED] ] item-2-id [ value 1 mail [EMAIL PROTECTED] ] I hope that helps, Ingo -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: adding line hints when building blocks
Hi Gregg, I've got close to what you want by using a "do string" to create a template for your files. This at least means you only have to do a string once. ie... ---8<--- rebol [] template: do "[^/none[^/value none^/mail none^/]^/]" file: [] insert file copy/deep template file/1: 'item-1 file/2/2: 1 file/2/4: [EMAIL PROTECTED] insert file copy/deep template file/1: 'item-2 file/2/2: 2 file/2/4: [EMAIL PROTECTED] insert file copy/deep template file/1: 'item-3 file/2/2: 3 file/2/4: [EMAIL PROTECTED] sort/skip file 2 ; (; print mold file ---8<--- This gives... >> do %test.r [item-1 [ value 1 mail [EMAIL PROTECTED] ] item-2 [ value 2 mail [EMAIL PROTECTED] ] item-3 [ value 3 mail [EMAIL PROTECTED] ]] It's not quite perfect as line-hints for the item values are lost when you change them, ((because they're in the outer block, perhaps?), but the others are kept so it's almost how you wanted it. This is how the file would look with no values changed... >> blk: [] loop 3 [insert blk copy/deep template] print mold blk [ none [ value none mail none ] none [ value none mail none ] none [ value none mail none ]] So close. Grrr! (: Hope that gets you some way to where you want, anyway. Carl. On 25-May-02, Gregg Irwin wrote: > hi Ammon, > << Just a shot in the dark (I am still not sure what you are > attempting, an example maybe?) Have you tried placing the word > 'newline in where you wanted > a new line? and I think that there is a similar one for tab IIRC. >> > Yup. Tried various combinations of things, reducing, composing, etc. > but no luck so far. > The goal is to write out, to a file, something like this: > item-1-id [ >value 0 >mail [EMAIL PROTECTED] > ] > item-2-id [ >value 1 >mail [EMAIL PROTECTED] > ] > which is an easy format to create and edit manually, and also very > easy to just LOAD for use in scripts. The format you get without > line hints is much harder to work with manually. E.g. > item-1-id [value 0 mail [EMAIL PROTECTED]] item-2-id [value 1 mail > [EMAIL PROTECTED]] item-3-id [value 1 mail [EMAIL PROTECTED]] item-4-id [value 1 > mail [EMAIL PROTECTED]] item-5-id [value 1 mail [EMAIL PROTECTED]] > The new serialized format will be fine for apps you don't want to > edit manually, and for REBOL developers, but for the average joe > (script-tinkerer, help-desk personnel), I think the native block > format might be much better. > --Gregg -- Carl Read -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: adding line hints when building blocks
Hi Gregg,
>From memory I think the only way to add a line hint is by loading a string.
>> block-with-line-hint: load {[^/]}
== [
]
You can insert this block into another.
>> test-block: copy []
== []
>> insert/only test-block block-with-line-hint
== []
>> test-block
== [[
]]
But as far as I can tell as soon as this block is evaluated - it loses it's
hint.
I think the only feasible alternative is to form a string with the line hint
and indentation you need.
And I'd really like a pretty formatter for scripts too. Clean script is good
but I don't
want to have to add line breaks at beginings of blocks.
If I remember, Joel created style-x something
that mangled comments, but might be enough for just data blocks.
Brett.
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[REBOL] Re: adding line hints when building blocks
hi Ammon, << Just a shot in the dark (I am still not sure what you are attempting, an example maybe?) Have you tried placing the word 'newline in where you wanted a new line? and I think that there is a similar one for tab IIRC. >> Yup. Tried various combinations of things, reducing, composing, etc. but no luck so far. The goal is to write out, to a file, something like this: item-1-id [ value 0 mail [EMAIL PROTECTED] ] item-2-id [ value 1 mail [EMAIL PROTECTED] ] which is an easy format to create and edit manually, and also very easy to just LOAD for use in scripts. The format you get without line hints is much harder to work with manually. E.g. item-1-id [value 0 mail [EMAIL PROTECTED]] item-2-id [value 1 mail [EMAIL PROTECTED]] item-3-id [value 1 mail [EMAIL PROTECTED]] item-4-id [value 1 mail [EMAIL PROTECTED]] item-5-id [value 1 mail [EMAIL PROTECTED]] The new serialized format will be fine for apps you don't want to edit manually, and for REBOL developers, but for the average joe (script-tinkerer, help-desk personnel), I think the native block format might be much better. --Gregg -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
[REBOL] Re: adding line hints when building blocks
Hi, Just a shot in the dark (I am still not sure what you are attempting, an example maybe?) Have you tried placing the word 'newline in where you wanted a new line? and I think that there is a similar one for tab IIRC. HTH Ammon A short time ago, Gregg Irwin, sent an email stating: > Hi Gang, > > If you build a block interactively in the console, with newlines between > items, or if you blockify a string with embedded newlines, the block > contains line "hints" which are used when the block is printed, molded, > etc. > > Suppose I want to build a block in code, which will be written to a file, > and I want it to be formatted nicely in the file (i.e. with newlines and > indentation). Is there any way to include formatting hints when building a > block, or do you have to build a string and blockify it? > > I know RT has mentioned that it's less efficient to build a string if you > want to DO it, but I haven't found a way to format a block as I build it. > > Thanks! > > --Gregg -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.
