diff options
Diffstat (limited to 'docs/curl_printf.3')
| -rw-r--r-- | docs/curl_printf.3 | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/docs/curl_printf.3 b/docs/curl_printf.3 new file mode 100644 index 000000000..7df589959 --- /dev/null +++ b/docs/curl_printf.3 @@ -0,0 +1,88 @@ +.\" You can view this file with: +.\" nroff -man [file] +.\" Written by daniel@haxx.se +.\" +.TH curl_printf 3 "20 April 2001" "libcurl 7.7.2" "libcurl Manual" +.SH NAME +curl_maprintf, curl_mfprintf, curl_mprintf, curl_msnprintf, curl_msprintf +curl_mvaprintf, curl_mvfprintf, curl_mvprintf, curl_mvsnprintf, +curl_mvsprintf - formatted output conversion +.SH SYNOPSIS +.B #include <curl/mprintf.h> +.sp +.BI "int curl_mprintf(const char *" format ", ...);" +.br +.BI "int curl_mfprintf(FILE *" fd ", const char *" format ", ...);" +.br +.BI "int curl_msprintf(char *" buffer ", const char *" format ", ...);" +.br +.BI "int curl_msnprintf(char *" buffer ", size_t " maxlength ", const char *" format ", ...);" +.br +.BI "int curl_mvprintf(const char *" format ", va_list " args ");" +.br +.BI "int curl_mvfprintf(FILE *" fd ", const char *" format ", va_list " args ");" +.br +.BI "int curl_mvsprintf(char *" buffer ", const char *" format ", va_list " args ");" +.br +.BI "int curl_mvsnprintf(char *" buffer ", size_t " maxlength ", const char *" format ", va_list " args ");" +.br +.BI "char *curl_maprintf(const char *" format ", ...);" +.br +.BI "char *curl_mvaprintf(const char *" format ", va_list " args ");" +.SH DESCRIPTION +These are all functions that produces output according to a format string and +given arguments. These are mostly clones of the well-known C-style functions +and there will be no detailed explanation of all available formatting rules +and usage here. + +See this table for notable exceptions. +.RS +.TP +.B curl_mprintf() +Normal printf() clone. +.TP +.B curl_mfprintf() +Normal fprinf() clone. +.TP +.B curl_msprintf() +Normal sprintf() clone. +.TP +.B curl_msnprintf() +snprintf() clone. Many systems don't have this. It is just like \fBsprintf\fP +but with an extra argument after the buffer that specifies the length of the +target buffer. +.TP +.B curl_mvprintf() +Normal vprintf() clone. +.TP +.B curl_mvfprintf() +Normal vfprintf() clone. +.TP +.B curl_mvsprintf() +Normal vsprintf() clone. +.TP +.B curl_mvsnprintf() +vsnprintf() clone. Many systems don't have this. It is just like +\fBvsprintf\fP but with an extra argument after the buffer that specifies the +length of the target buffer. +.TP +.B curl_maprintf() +Like printf() but returns the output string as a malloc()ed string. The +returned string must be free()ed by the receiver. +.TP +.B curl_mvaprintf() +Like curl_maprintf() but takes a va_list pointer argument instead of a +variable amount of arguments. +.RE + +To easily use all these cloned functions instead of the normal ones, #define +_MPRINTF_REPLACE before you include the <curl/mprintf.h> file. Then all the +normal names like printf, fprintf, sprintf etc will use the curl-functions +instead. +.SH RETURN VALUE +The \fBcurl_maprintf\fP and \fBcurl_mvaprintf\fP functions return a pointer to +a newly allocated string, or NULL it it failed. + +All other functions return the number of character they actually outputed. +.SH "SEE ALSO" +.BR printf "(3), " sprintf "(3), " fprintf "(3), " vprintf "(3) " |