libwget-printf - Man Page
Libwget printf functions
Synopsis
Functions
size_t wget_vasprintf (char **strp, const char *fmt, va_list args)
size_t wget_asprintf (char **strp, const char *fmt,...)
char * wget_vaprintf (const char *fmt, va_list args)
char * wget_aprintf (const char *fmt,...)
size_t wget_vfprintf (FILE *fp, const char *fmt, va_list args)
size_t wget_fprintf (FILE *fp, const char *fmt,...)
size_t wget_printf (const char *fmt,...)
size_t wget_vsnprintf (char *str, size_t size, const char *fmt, va_list args)
size_t wget_snprintf (char *str, size_t size, const char *fmt,...)
Detailed Description
This is a collection of printf-style functions that are used with libwget and/or Wget2 code. They may be useful to other developers that is why they are exported.
Function Documentation
size_t wget_vasprintf (char ** strp, const char * fmt, va_list args)
- Parameters
strp Pointer to hold the string output
fmt Printf-like format specifier
args va_list of arguments- Returns
Length of the string returned via strp or (size_t) -1 on error
Prints arguments to allocated memory and 0-terminates it. The string is returned via the first argument. It has to be free()'d by the caller when it is no longer needed.
size_t wget_asprintf (char ** strp, const char * fmt, ...)
- Parameters
strp Pointer to hold the string output
fmt Printf-like format specifier
... List of arguments- Returns
Length of the string returned via strp
Prints arguments to allocated memory and 0-terminates it. The string is returned via the first argument. It has to be free()'d by the caller when it is no longer needed.
char * wget_vaprintf (const char * fmt, va_list args)
- Parameters
fmt Printf-like format specifier
args va_list of arguments- Returns
Pointer to 0-terminated string in memory
Prints arguments to memory and returns a pointer to allocated and 0-terminated chunk of memory. The return value has to be free()'d by the caller when it is no longer needed.
char * wget_aprintf (const char * fmt, ...)
- Parameters
fmt Printf-like format specifier
... List of arguments- Returns
Pointer to 0-terminated string in memory
Prints arguments to memory and returns a pointer to allocated and 0-terminated chunk of memory. The return value has to be free()'d by the caller when it is no longer needed.
size_t wget_vfprintf (FILE * fp, const char * fmt, va_list args)
- Parameters
fp FILE pointer
fmt Printf-like format specifier
args List of arguments- Returns
Number of bytes written or -1 on error
Prints arguments to stream fp and returns number of bytes written.
size_t wget_fprintf (FILE * fp, const char * fmt, ...)
- Parameters
fp FILE pointer
fmt Printf-like format specifier
... List of arguments- Returns
Number of bytes written or -1 on error
Prints arguments to stream fp and returns number of bytes written.
size_t wget_printf (const char * fmt, ...)
- Parameters
fmt Printf-like format specifier
... List of arguments- Returns
Number of bytes written or -1 on error
Prints arguments to stdout and returns number of bytes written.
size_t wget_vsnprintf (char * str, size_t size, const char * fmt, va_list args)
- Parameters
str Destination buffer
size Size of str
fmt Printf-like format specifier
args List of arguments- Returns
Number of bytes written, or, on truncation, that would have been written
Prints arguments to buffer str and returns number of bytes written, or on truncation: that would have been written.
If str is NULL the return value are the number of bytes that would have been written.
size_t wget_snprintf (char * str, size_t size, const char * fmt, ...)
- Parameters
str Destination buffer
size Size of str
fmt Printf-like format specifier
... List of arguments- Returns
Number of bytes written, or, on truncation, that would have been written
Prints arguments to buffer str and returns number of bytes written, or on truncation: that would have been written.
If str is NULL the return value are the number of bytes that would have been written.
Author
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