Ok, found the problem, totally my fault. Sorry for wasting everyone's time
:(
Totally expected behavior when you put a "w" instead of a "r" as you
intended to. (-_-)
FILE *fd = fopen(fname, "wb");
Again, I'm sorry.
On Friday, June 19, 2015 at 7:29:08 AM UTC+2, Jon Valdés wrote:
>
> Wait, I just discovered something else. Forget about the last email.
>
> The problem is that whatever file the emscripten-generated code tries to
> load, becomes a zero-sized file. That's why any files named "data/*" were
> being set to zero-size, because my code was loading them.
> Any files that are in that directory but my code isn't loading have the
> correct size.
>
> So, current hypothesis: *after the emscripten-generated code tries to
> load a file, it becomes zero-sized*
>
> Any ideas?
>
> On Friday, June 19, 2015 at 7:21:09 AM UTC+2, Jon Valdés wrote:
>>
>> Hi jj,
>>
>> On Thursday, June 18, 2015 at 11:40:04 PM UTC+2, jj wrote:
>>>
>>> Does --preload-file data/ work? I wonder if this might be about
>>> directory handling in --embed-file, or the quotes there, or the lack of
>>> trailing /, or something other similar in command line parsing that ends up
>>> creating zero-sized files.
>>>
>>
>> Ok, I've been trying stuff along those lines, and I've gotten to a very
>> weird conclusion:* this happens only if the target dir in the emscripten
>> FS is "/data"*. If I change the name to anything else, it works.
>>
>> For example, all these give me zero-sized files:
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data"
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data@data"
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data@/data"
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data@/data/"
>>
>> But all these work correctly:
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data@data2"
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data@foo/data"
>> em++ -std=c++11 main.cpp -o main.html --embed-file "data@data/foo"
>>
>> This seems like a pretty specific bug!
>> I hope there's an easy fix for this.
>>
>> Kind regards,
>> Jon Valdes
>>
>>
>>
>>
>>> 2015-06-18 21:52 GMT+03:00 Jon Valdés <[email protected]>:
>>>
>>>> Hi there,
>>>>
>>>> I'm trying to embed files for the first time, and I'm getting a strange
>>>> problem: my files are correctly detected by the emscripten VFS, but they
>>>> are all zero-sized :-\
>>>>
>>>> Here's a screenshot of one file's info (notice the "usedBytes" variable
>>>> set to 0):
>>>>
>>>>
>>>> <https://lh3.googleusercontent.com/-CI7ENPpcqpI/VYMR7gu3WwI/AAAAAAAAJoM/ru5eeVS12Ts/s1600/caca_2015-06-18_20-39-51.png>
>>>>
>>>>
>>>> This makes my C++ code fail, as when it tries to get the file size
>>>> (with the usual combination of fseek and ftell) it always returns zero.
>>>>
>>>>
>>>> In my build script I'm calling emscripten with this command:
>>>>
>>>>
>>>> em++ -std=c++11 main.cpp -o main.html --embed-file "data"
>>>>
>>>>
>>>> Also, if it matters, right now I'm on a Windows machine.
>>>>
>>>>
>>>> Any idea what could be the problem?
>>>>
>>>> Thanks a lot in advance!
>>>>
>>>>
>>>> Kind regards,
>>>>
>>>> Jon Valdes
>>>>
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>>>
>>>
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