Description

Plugin opcode in cs_date.

Read a line of text from an external file once on initialisation.

Syntax

Sres, iline readfi ifilname

Initialization

ifilname -- an integer N denoting a file named "input.N" or a character string (in double quotes, spaces permitted) denoting the external file name. For a string, it may either be a full path name with directory specified or a simple filename. In the later case, the file is sought first in the current directory, then in SSDIR, and finally in SFDIR.

iline -- line number, or -1 when end of file has been reached.

Sres -- output of the line read from ifilname.

This opcode allows a line of text to be read from a named external file. There may be any number of readfi opcodes in an instrument or orchestra but they read separately from the same or different files.

Examples

Here is an example of the readfi opcode. It uses the file readfi.csd.

<CsoundSynthesizer>
<CsOptions>
-n
</CsOptions>

<CsInstruments>
instr 1
    Swd pwd
        printf_i "Working directory is '%s'\n", 1, Swd
        prints "Reading myself =):\n"
read:
Sline, iLineNum readfi "readfi.csd"
        printf_i  "Line %d: %s", iLineNum, iLineNum, Sline
        if iLineNum != -1 igoto read
endin
</CsInstruments>

<CsScore>
i1 0 0.1
e
</CsScore>

</CsoundSynthesizer>

See also

File Input and Output

Credits

John ffitch and Joachim Heintz

2012; new in 5.17.12