48 lines
2.1 KiB
C++
48 lines
2.1 KiB
C++
#include "__write.h"
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#include "Exception.h"
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#include "Operand.h"
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#include <iostream>
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#include <fcntl.h>
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#include <unistd.h>
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namespace jet {
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__write::__write(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent) : Tag(in, parentOut, global, parent) {
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output = false;
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int mode = 0;
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int len;
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processContainer(container);
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if(!variableDefined("file"))
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throw coreutils::Exception("write tag must have file defined.");
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if(!variableDefined("expr") && variableDefined("value") && hasContainer)
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throw coreutils::Exception("write tag cannot have both value and a container.");
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if(variableDefined("expr") && !variableDefined("value") && hasContainer)
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throw coreutils::Exception("write tag cannot have both expr and a container.");
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if(variableDefined("expr") && variableDefined("value") && !hasContainer)
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throw coreutils::Exception("write tag cannot have both expr and value.");
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if(!variableDefined("expr") && !variableDefined("value") && !hasContainer)
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throw coreutils::Exception("write tag must have a value, expr or a container.");
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if(variableDefined("scope"))
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throw coreutils::Exception("Cannot use scope with write tag.");
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if(!variableDefined("mode"))
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throw coreutils::Exception("write tag must have a mode keyword.");
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if(variables["mode"] == "append")
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mode = O_APPEND;
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else if(variables["mode"] == "overwrite")
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mode = O_TRUNC;
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else
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throw coreutils::Exception("mode keyword must be 'overwrite' or 'append'.");
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int fd = open(variables["file"].c_str(), mode, 0644); // Need to add O_CREAT and AUTH flags.
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if(hasContainer && !evaluate)
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len = write(fd, container.getData(), container.getLength());
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else if(hasContainer && evaluate)
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len = write(fd, out.getData(), out.getLength());
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else if(!hasContainer && variableDefined("value"))
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len = write(fd, variables["value"].getData(), variables["value"].getLength());
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else if(!hasContainer && variableDefined("expr"))
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len = write(fd, variables["expr"].getData(), variables["expr"].getLength());
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close(fd);
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}
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}
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