file.open
Syntax
- f = file.open(sname<,smode><,stype>)
Open a file for reading/writing.
- smode indicates the open mode. It is a string that must match (as a command keyword) one of the following values:
- stype is the type of file. The default file type is save. Currently available file types are:
save: The default. This is the same format used for save files and results files.
text: A text file, each line in the file is read as a string. On write each entry in the list is converted to a string if necessary and written as a line.
json: A text file structured in JSON format.
fish: A file in a FISH specific legacy format. Compatible with older versions, and extended to support some of the newer types.
binary: A file in binary format. Each entry in the list is treated as an integer from 0 to 255, and is written/read as a separate byte in the file.
The save and json formats allow all FISH types except pointers, and preserve hierarchical data structures (lists of lists of maps etc.). The text type converts all entries to text strings on write, as if the
string
intrinsic were used. The fish type is restricted to bool, integer, float, string, vector, and tensor types.
Usage Example
The following example illustrates how file.open
can be used
model new
zone create brick size 2 2 2
fish define output_gps
local f = file.open("gps.txt","write","text")
local l = list
loop foreach local g gp.list
local a = string.build("%1,%2,%3,%4", gp.id(g), ...
gp.pos(g)->x, gp.pos(g)->y, gp.pos(g)->z)
l = list.append(l,a)
endloop
file.write(f,l)
file.close(f)
end
[output_gps]
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