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curl_printf(3)                  libcurl Manual                  curl_printf(3)



NAME
       curl_maprintf,  curl_mfprintf,  curl_mprintf,  curl_msnprintf,  curl_msprintf  curl_mvaprintf,  curl_mvfprintf,
       curl_mvprintf, curl_mvsnprintf, curl_mvsprintf - formatted output conversion

SYNOPSIS
       #include <curl/mprintf.h>

       int curl_mprintf(const char *format, ...);
       int curl_mfprintf(FILE *fd, const char *format, ...);
       int curl_msprintf(char *buffer, const char *format, ...);
       int curl_msnprintf(char *buffer, size_t maxlength, const char *format, ...);
       int curl_mvprintf(const char *format, va_list args);
       int curl_mvfprintf(FILE *fd, const char *format, va_list args);
       int curl_mvsprintf(char *buffer, const char *format, va_list args);
       int curl_mvsnprintf(char *buffer, size_t maxlength, const char *format, va_list args);
       char *curl_maprintf(const char *format, ...);
       char *curl_mvaprintf(const char *format, va_list args);

DESCRIPTION
       These are all functions that produce 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 format-
       ting rules and usage here.

       See this table for notable exceptions.

              curl_mprintf()
                     Normal printf() clone.

              curl_mfprintf()
                     Normal fprintf() clone.

              curl_msprintf()
                     Normal sprintf() clone.

              curl_msnprintf()
                     snprintf() clone. Many systems don't have this. It is just like sprintf but with an  extra  argu-
                     ment after the buffer that specifies the length of the target buffer.

              curl_mvprintf()
                     Normal vprintf() clone.

              curl_mvfprintf()
                     Normal vfprintf() clone.

              curl_mvsprintf()
                     Normal vsprintf() clone.

              curl_mvsnprintf()
                     vsnprintf()  clone.   Many  systems  don't  have this. It is just like vsprintf but with an extra
                     argument after the buffer that specifies the length of the target buffer.

              curl_maprintf()
                     Like printf() but returns the output string as a malloc()ed string. The returned string  must  be
                     free()ed by the receiver.

              curl_mvaprintf()
                     Like  curl_maprintf()  but takes a va_list pointer argument instead of a variable amount of argu-
                     ments.

       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.

AVAILABILITY
       These function will be removed from the public libcurl API in a near future. They will instead be made  "avail-
       able"  by  source  code  access  only,  and then as curlx_-prefixed functions. See lib/README.curlx for further
       details.

RETURN VALUE
       The curl_maprintf and curl_mvaprintf functions return a pointer to a newly allocated  string,  or  NULL  if  it
       failed.

       All other functions return the number of characters they actually outputted.

SEE ALSO
       printf(3), sprintf(3), fprintf(3), vprintf(3)



libcurl 7.12                     30 April 2004                  curl_printf(3)