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Bitmap/Read a PPM file: Difference between revisions
Replaced "File" by "Stream" which allows to use "readPPM" with a pipe.
m (Fixed typo.) |
(Replaced "File" by "Stream" which allows to use "readPPM" with a pipe.) |
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Line 1,356:
<lang nim>import strutils
import bitmap
import streams
type FormatError = object of CatchableError
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#---------------------------------------------------------------------------------------------------
iterator tokens(f:
## Yield the tokens in the header.
for line in f.lines:
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#---------------------------------------------------------------------------------------------------
proc header(f:
## Read the header and
var state = waitingMagic
for (token, lastInLine) in f.tokens:
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#---------------------------------------------------------------------------------------------------
proc readPPM*(f:
## Read a PPM file from a stream into an image.
let header = f.header()
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var
arr: array[256, int8]
read = f.
pos = 0
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inc pos
read = f.
if pos != 3 * result.w * result.h:
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## Load a PPM file into an image.
var file =
result = file.readPPM()
file.close()
#———————————————————————————————————————————————————————————————————————————————————————————————————
when isMainModule:
let image = readPPM("output.ppm")
echo image.h, " ", image.w</lang>
=={{header|OCaml}}==
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