Variations of formatted scanning functions. More...
Functions | |
int | trio_scanf (const char *format,...) |
Scan characters from standard input stream. More... | |
int | trio_vscanf (const char *format, va_list args) |
Scan characters from standard input stream. More... | |
int | trio_scanfv (const char *format, trio_pointer_t *args) |
Scan characters from standard input stream. More... | |
int | trio_fscanf (FILE *file, const char *format,...) |
Scan characters from file. More... | |
int | trio_vfscanf (FILE *file, const char *format, va_list args) |
Scan characters from file. More... | |
int | trio_fscanfv (FILE *file, const char *format, trio_pointer_t *args) |
Scan characters from file. More... | |
int | trio_dscanf (int fd, const char *format,...) |
Scan characters from file descriptor. More... | |
int | trio_vdscanf (int fd, const char *format, va_list args) |
Scan characters from file descriptor. More... | |
int | trio_dscanfv (int fd, const char *format, trio_pointer_t *args) |
Scan characters from file descriptor. More... | |
int | trio_sscanf (const char *buffer, const char *format,...) |
Scan characters from string. More... | |
int | trio_vsscanf (const char *buffer, const char *format, va_list args) |
Scan characters from string. More... | |
int | trio_sscanfv (const char *buffer, const char *format, trio_pointer_t *args) |
Scan characters from string. More... | |
Variations of formatted scanning functions.
SYNOPSIS
cc ... -ltrio -lm #include <trio.h>
DESCRIPTION
This documentation is incomplete. The documentation of the scanf family in [C99] and [UNIX98] also applies to the trio counterparts.
SCANNING
The scanning is controlled by the format string. The format string can contain normal text and conversion indicators. The normal text can be any character except the nil character (\000) and the percent character (\045 = '\'). Conversion indicators consists of an indication character (%), followed by zero or more conversion modifiers, and exactly one conversion specifier.
Modifiers
Positional ( 9$
) [UNIX98]
See trio_printf.
Specifiers
Percent ( %
)
Character ( c
)
Decimal ( d
)
Floating-point ( a
, A
, e
, E
, f
, F
, g
, G
)
Integer ( i
)
Count ( n
)
Octal ( o
)
Pointer ( p
)
String ( s
)
Unsigned ( u
)
Hex ( x
, X
)
Scanlist ( [] )
Scanlist Exclusion (^
)
Scanlist Range ( -
) [TRIO]
[a-b], but not
[b-a].
[a-b-c] equals
[a-c].
[a-] is interpreted as an a
and a -
. Scanlist Equivalence Class Expression ( [=
=
] ) [TRIO]
Locale dependent (LC_COLLATE). Only one expression can appear inside the delimiters.
[=a=] All letters in the same equivalence class as the letter a
. trio_scanf("%[[=a=]b]\n", buffer); trio_scanf("%[[=a=][=b=]]\n", buffer);
Scanlist Character Class Expression ( [:
:]) [TRIO] Locale dependent (LC_CTYPE). Only one expression can appear inside the delimiters.
[:alnum:] Same as
[:alpha:] and
[:digit:]
[:alpha:] Same as
[:lower:] and
[:upper:]
[:cntrl:] Control characters
[:digit:] Decimal digits
[:graph:] Printable characters except space
[:lower:] Lower case alphabetic letters
[:print:] Printable characters
[:punct:] Punctuation
[:space:] Whitespace characters
[:upper:] Upper case alphabetic letters
[:xdigit:] Hexadecimal digits trio_scanf("%[[:alnum:]]\n", buffer); trio_scanf("%[[:alpha:][:digit:]]\n", buffer);
RETURN VALUES
SEE ALSO
int trio_dscanf | ( | int | fd, |
const char * | format, | ||
... | |||
) |
Scan characters from file descriptor.
fd | File descriptor. |
format | Formatting string. |
... | Arguments. |
References trio_vdscanf().
Referenced by trio_fscanfv().
int trio_dscanfv | ( | int | fd, |
const char * | format, | ||
trio_pointer_t * | args | ||
) |
Scan characters from file descriptor.
fd | File descriptor. |
format | Formatting string. |
args | Arguments. |
Referenced by trio_vdscanf().
int trio_fscanf | ( | FILE * | file, |
const char * | format, | ||
... | |||
) |
Scan characters from file.
file | File pointer. |
format | Formatting string. |
... | Arguments. |
References trio_vfscanf().
Referenced by trio_scanfv().
int trio_fscanfv | ( | FILE * | file, |
const char * | format, | ||
trio_pointer_t * | args | ||
) |
Scan characters from file.
file | File pointer. |
format | Formatting string. |
args | Arguments. |
References trio_dscanf().
Referenced by trio_vfscanf().
int trio_scanf | ( | const char * | format, |
... | |||
) |
Scan characters from standard input stream.
format | Formatting string. |
... | Arguments. |
References trio_vscanf().
int trio_scanfv | ( | const char * | format, |
trio_pointer_t * | args | ||
) |
Scan characters from standard input stream.
format | Formatting string. |
args | Arguments. |
References trio_fscanf().
Referenced by trio_vscanf().
int trio_sscanf | ( | const char * | buffer, |
const char * | format, | ||
... | |||
) |
Scan characters from string.
buffer | Input string. |
format | Formatting string. |
... | Arguments. |
References trio_vsscanf().
int trio_sscanfv | ( | const char * | buffer, |
const char * | format, | ||
trio_pointer_t * | args | ||
) |
Scan characters from string.
buffer | Input string. |
format | Formatting string. |
args | Arguments. |
Referenced by trio_vsscanf().
int trio_vdscanf | ( | int | fd, |
const char * | format, | ||
va_list | args | ||
) |
Scan characters from file descriptor.
fd | File descriptor. |
format | Formatting string. |
args | Arguments. |
References trio_dscanfv().
Referenced by trio_dscanf().
int trio_vfscanf | ( | FILE * | file, |
const char * | format, | ||
va_list | args | ||
) |
Scan characters from file.
file | File pointer. |
format | Formatting string. |
args | Arguments. |
References trio_fscanfv().
Referenced by trio_fscanf().
int trio_vscanf | ( | const char * | format, |
va_list | args | ||
) |
Scan characters from standard input stream.
format | Formatting string. |
args | Arguments. |
References trio_scanfv().
Referenced by trio_scanf().
int trio_vsscanf | ( | const char * | buffer, |
const char * | format, | ||
va_list | args | ||
) |
Scan characters from string.
buffer | Input string. |
format | Formatting string. |
args | Arguments. |
References trio_sscanfv().
Referenced by trio_sscanf().