File: parselib.h

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#include <sys/cdefs.h>

/* parse lib: parse mmapped text with \n terminated lines */

/* a memory buffer. */
struct state {
  const char* buffirst;/* pointer to the buffer */
  size_t buflen;		/* length of the buffer */
  size_t cur;			/* already parsed bytes */
};

/* open and mmap file, fill in struct state */
void __prepare_parse(const char* filename,struct state* s);
/* mmap a file already open, fill in struct state */
void __fprepare_parse(int fd, struct state* s);
/* unmap file */
void __end_parse(struct state* s);

/* return the length of the matching string, 0 on error */
/* match while pred returns nonzero */
size_t __parse(struct state* s,int (*pred)(int ch));

size_t __parse_ws(struct state* s);		/* skip ' ' or '\t', break at '\n' or '#' */
size_t __parse_nws(struct state* s);		/* skip non-whitespace, break at '\n' or '#' */
size_t __parse_1(struct state* s,char c) __attribute__((__pure__));	/* skip to c */

size_t scan_ulong(const char* s,unsigned long* l);