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strings.d
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1987-05-16
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69 lines
#include:util.g
int
DEFAULTMINLENGTH = 4,
MAXLENGTH = 255;
proc main()void:
channel input binary chin;
file() fyle;
*char par;
byte b;
ushort minLength, length, i;
bool inString;
[MAXLENGTH] char buffer;
par := GetPar();
if par = nil then
writeln("Use is: strings [-n] file1 ... fileN");
exit(1);
fi;
minLength := DEFAULTMINLENGTH;
if par* = '-' and (par + 1)* >= '0' and (par + 1)* <= '9' then
minLength := (par + 1)* - '0';
par := GetPar();
fi;
if par = nil then
writeln("Use is: strings [-n] file1 ... fileN");
exit(1);
fi;
while par ~= nil do
if not open(chin, fyle, par) then
writeln(par, ": does not exist.\r\n");
else
inString := false;
while read(chin; b) do
if b >= 0x20 and b <= 0x7e then
if not inString then
inString := true;
length := 0;
fi;
if length = MAXLENGTH - 1 then
for i from 0 upto MAXLENGTH - 20 do
write(buffer[i]);
od;
for i from MAXLENGTH - 19 upto MAXLENGTH - 2 do
buffer[i - (MAXLENGTH - 19)] := buffer[i];
od;
length := 18;
fi;
buffer[length] := b + '\e';
length := length + 1;
else
if inString then
if length >= minLength then
for i from 0 upto length - 1 do
write(buffer[i]);
od;
writeln();
fi;
inString := false;
fi;
fi;
od;
close(chin);
fi;
par := GetPar();
od;
corp;