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63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
7 years ago
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#ifndef SHELPERS_H_
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#define SHELPERS_H_
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#include <stdint.h>
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/**
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* Clones the given string, malloc'ing a new one.
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* @param s the string to clone
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* @return the malloc'd copy
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*/
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char *strclone(const char *s);
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/**
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* Clones the given string until the given count.
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* @param s the string to clone
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* @param n the number of characters to clone
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* @return the malloc'd copy
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*/
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char *strnclone(const char *s, uint32_t n);
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/**
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* Returns non-zero if the character is considered an end-of-line.
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* @param c a character
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* @return non-zero if eol, zero if not
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*/
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uint8_t eol(int c);
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/**
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* Returns non-zero if the character is considered an end-of-token.
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* @param c a character
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* @return non-zero if eot, zero if not
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*/
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uint8_t eot(int c);
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/**
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* Returns non-zero if the character is considered an end-of-expression.
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* @param c a character
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* @return non-zero if eoe, zero if not
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*/
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uint8_t eoe(int c);
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/**
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* Finds the matching end character in a string, e.g. matching parens.
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* @param s the string to search
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* @param o the starting, opening character (e.g. '(')
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* @param c the end, closing character (e.g. ')')
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* @return offset of the end character in the string
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*/
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uint32_t findend(const char *s, char o, char c);
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/**
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* Increments offset until the character in the string is not blank or fails
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* the given comparison.
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* @param s the string to use
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* @param cmp a comparing function, stops search if returns true
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* @param offset the variable to increment while searching
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*/
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void skipblank(const char *s, uint8_t (*cmp)(int), uint32_t *offset);
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#endif // SHELPERS_H_
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