On Monday, 10 December 2018 at 02:06:26 UTC, Basile B. wrote:
> On Monday, 10 December 2018 at 01:51:56 UTC, Andrew Pennebaker wrote:
>> The stdlib has all the low-level components we need to do lots of different workflows. However, there are a few gaps in the API in terms of high level, common tasks. For example, the API can read an entire Unicode text file to a string for a given filename, but not for a given File object!
>>
>> For now, I am accomplishing this with:
>>
>> // Convenience function for reading an entire UTF-8 file.
>> string readUTF8(File f) {
>>     string s;
>>
>>     foreach(ubyte[] buf; f.byChunk(1024)) {
>>         s ~= buf;
>>     }
>>
>>     return s;
>> }
>>
>
> There's more simple:
>
>
>     auto wholeFile = f.rawRead(new char[](f.size));
>
>
> Note that this kind of question should rather go there: https://forum.dlang.org/group/learn

For pipedProcess streams, the size is basically infinite until the process ends, so that leads to an out of memory error. Again, I think a convenience function would be good to include, to avoid these kinds of mistakes!

On Monday, 10 December 2018 at 14:44:56 UTC, Steven Schveighoffer wrote:
> On 12/9/18 9:37 PM, Seb wrote:
>> On Monday, 10 December 2018 at 01:51:56 UTC, Andrew Pennebaker wrote:
>>> The stdlib has all the low-level components we need to do lots of different workflows. However, there are a few gaps in the API in terms of high level, common tasks. For example, the API can read an entire Unicode text file to a string for a given filename, but not for a given File object!
>>>
>>> [...]
>> 
>> What's wrong with readText:
>> 
>> https://dlang.org/phobos/std_file.html#readText
>
> Problem statement is that given a File object, how do you read all the data out? :) std.file doesn't help there.

As far as I know, the best answer is `file.byLineCopy(Yes.keepTerminator).joiner` if you want characters, and `file.byChunk(...).joiner` if you want ubytes.

On 12/11/18 12:24 AM, Paul Backus wrote:
> On Monday, 10 December 2018 at 14:44:56 UTC, Steven Schveighoffer wrote:
>> On 12/9/18 9:37 PM, Seb wrote:
>>> On Monday, 10 December 2018 at 01:51:56 UTC, Andrew Pennebaker wrote:
>>>> The stdlib has all the low-level components we need to do lots of different workflows. However, there are a few gaps in the API in terms of high level, common tasks. For example, the API can read an entire Unicode text file to a string for a given filename, but not for a given File object!
>>>>
>>>> [...]
>>>
>>> What's wrong with readText:
>>>
>>> https://dlang.org/phobos/std_file.html#readText
>>
>> Problem statement is that given a File object, how do you read all the data out? :) std.file doesn't help there.
> 
> As far as I know, the best answer is `file.byLineCopy(Yes.keepTerminator).joiner` if you want characters, and `file.byChunk(...).joiner` if you want ubytes.

Well, I would say the original request wants it in a string, so we are focusing on characters.

However, this does NOT work:

file.byLine(Yes.keepTerminator).joiner.array;

Because it will make an array of dchars.

What you really want is this:

cast(string)file.byChunk(4096).joiner.array;

-Steve