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Read a defined block from text file

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Simon
Simon 2016-12-27
回答： Image Analyst 2016-12-27
Hello,
I like to read text from a text file with following structure:
Random Text
over several
lines
item(
name="Item1",
note="Note1",
coef=(
DATA(1, 2, 3, [11, 12, 21, 22]),
DATA(4, 5, 6, [44, 45, 54, 55])
),
author="Name1"
)
item(
name="Item2",
note="Note2",
coef=(
DATA(1, 2, 3, [11, 12, 21, 22]),
DATA(4, 5, 6, [44, 45, 54, 55])
),
author="Name2"
)
...
The structure is always the same (sometimes author is missing; DATA with 3 numbers and a vector is always stored in item). I thought I can use something like fscanf(fileID,'item(%s)') and split the text again. However, this does not work (returns an empty string).
The file is very big; looping through with fgetl and using if and strcmp works, but is very slow.

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回答（1 个）

Image Analyst
Image Analyst 2016-12-27
Maybe try to read the whole file into one array with fread() and then do your parsing on the array. It should be faster than a bunch of disk accesses.

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