/usr/include/scan.h is in libowfat-dev 0.29-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | /* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
#ifndef SCAN_H
#define SCAN_H
/* for size_t: */
#include <stddef.h>
/* for uint32_t: */
#include <stdint.h>
/* for time_t: */
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __pure__
#define __pure__
#endif
/* interpret src as ASCII decimal number, write number to dest and
* return the number of bytes that were parsed */
size_t scan_ulong(const char *src,unsigned long *dest);
/* interpret src as ASCII hexadecimal number, write number to dest and
* return the number of bytes that were parsed */
size_t scan_xlong(const char *src,unsigned long *dest);
/* interpret src as ASCII octal number, write number to dest and
* return the number of bytes that were parsed */
size_t scan_8long(const char *src,unsigned long *dest);
/* interpret src as signed ASCII decimal number, write number to dest
* and return the number of bytes that were parsed */
size_t scan_long(const char *src,signed long *dest);
size_t scan_longlong(const char *src,signed long long *dest);
size_t scan_ulonglong(const char *src,unsigned long long *dest);
size_t scan_xlonglong(const char *src,unsigned long long *dest);
size_t scan_8longlong(const char *src,unsigned long long *dest);
size_t scan_uint(const char *src,unsigned int *dest);
size_t scan_xint(const char *src,unsigned int *dest);
size_t scan_8int(const char *src,unsigned int *dest);
size_t scan_int(const char *src,signed int *dest);
size_t scan_ushort(const char *src,unsigned short *dest);
size_t scan_xshort(const char *src,unsigned short *dest);
size_t scan_8short(const char *src,unsigned short *dest);
size_t scan_short(const char *src,signed short *dest);
/* interpret src as double precision floating point number,
* write number to dest and return the number of bytes that were parsed */
size_t scan_double(const char *in, double *dest);
/* if *src=='-', set *dest to -1 and return 1.
* if *src=='+', set *dest to 1 and return 1.
* otherwise set *dest to 1 return 0. */
size_t scan_plusminus(const char *src,signed int *dest);
/* return the highest integer n<=limit so that isspace(in[i]) for all 0<=i<=n */
size_t scan_whitenskip(const char *in,size_t limit) __pure__;
/* return the highest integer n<=limit so that !isspace(in[i]) for all 0<=i<=n */
size_t scan_nonwhitenskip(const char *in,size_t limit) __pure__;
/* return the highest integer n<=limit so that in[i] is element of
* charset (ASCIIZ string) for all 0<=i<=n */
size_t scan_charsetnskip(const char *in,const char *charset,size_t limit) __pure__;
/* return the highest integer n<=limit so that in[i] is not element of
* charset (ASCIIZ string) for all 0<=i<=n */
size_t scan_noncharsetnskip(const char *in,const char *charset,size_t limit) __pure__;
/* try to parse ASCII GMT date; does not understand time zones. */
/* example dates:
* "Sun, 06 Nov 1994 08:49:37 GMT"
* "Sunday, 06-Nov-94 08:49:37 GMT"
* "Sun Nov 6 08:49:37 1994"
*/
size_t scan_httpdate(const char *in,time_t *t) __pure__;
/* some variable length encodings for integers */
size_t scan_utf8(const char* in,size_t len,uint32_t* n) __pure__;
size_t scan_asn1derlength(const char* in,size_t len,unsigned long long* n) __pure__;
size_t scan_asn1dertag(const char* in,size_t len,unsigned long long* n) __pure__;
/* a few internal function that might be useful independently */
/* convert from hex ASCII, return 0 to 15 for success or -1 for failure */
int scan_fromhex(unsigned char c);
#ifdef __cplusplus
}
#endif
#endif
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