package gapi-ocaml

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A simple OCaml client for Google Services

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v0.4.6.tar.gz
sha256=b84b680528a5e050014103a8e7a60a5d43efd5fefc3f838310bd46769775ab48
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doc/gapi-ocaml.netstring-local/Netconversion/class-conversion_pipe/index.html

Class Netconversion.conversion_pipeSource

This pipeline class (see Netchannels for more information) can be used * to recode a netchannel while reading or writing. The argument in_enc * is the input encoding, and out_enc is the output encoding. * * The channel must consist of a whole number of characters. If it * ends with an incomplete multi-byte character, however, this is * detected, and the exception Malformed_code will be raised. * This exception is also raised for other encoding errors in the * channel data. * * Example. Convert ISO-8859-1 to UTF-8 while writing to the file * "output.txt": * *

*    let ch = new output_channel (open_out "output.txt") in
*    let encoder = 
*      new conversion_pipe ~in_enc:`Enc_iso88591 ~out_enc:`Enc_utf8 () in
*    let ch' = new output_filter encoder ch in
*    ... (* write to ch' *)
*    ch' # close_out();
*    ch  # close_out();  (* you must close both channels! *)
* 

* * If you write as UTF-16, don't forget to output the byte order * mark yourself, as the channel does not do this. * * Example. Convert UTF-16 to UTF-8 while reading from the file * "input.txt": * *

*    let ch = new input_channel (open_in "input.txt") in
*    let encoder = 
*      new conversion_pipe ~in_enc:`Enc_utf16 ~out_enc:`Enc_utf8 () in
*    let ch' = new input_filter ch encoder in
*    ... (* read from ch' *)
*    ch' # close_in();
*    ch  # close_in();  (* you must close both channels! *)
* 

* *

  • parameter subst

    This function is invoked for code points of in_enc that * cannot be represented in out_enc, and the result of the function * invocation is substituted (directly, without any further conversion). * Restriction: The string returned by subst must not be longer than 50 * bytes. * If subst is missing, Cannot_represent is raised in this case.

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