38 lines
755 B
C
38 lines
755 B
C
#ifndef SCANNER_H
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#define SCANNER_H
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#define INITIAL_STRING_SIZE 10
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// This enum denotes what type of variable a token is.
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enum Type {
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EXECUTABLE, // a command in either $CWD or $PATH
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OPTION, // any options to pass to an executable or builtin
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COMPOSITION, // '&&', '||', ';', '\n'
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BUILTIN, // one of a few pre-defined builtin executables
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PIPELINE, // '|'
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REDIRECT, // '<' or '>'
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BACKGROUND, // '&'
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FILENAME // a file (for redirection)
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};
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typedef struct ListNode *List;
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typedef struct ListNode {
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char *t;
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enum Type type;
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List next;
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} ListNode;
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char *readInputLine();
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List getTokenList(char *s);
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bool isEmpty(List l);
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void printList(List l);
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void freeTokenList(List l);
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#endif
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