NAME 
src/misc.c - Miscellaneous functions
DESCRIPTION
Miscellaneous functions,
mainly the Parrot_sprintf family.
Uses a generalized formatting algorithm (src/spf_render.c) with a specialized vtable (src/spf_vtable.c) to handle argument extraction.
Functions
The naming convention used is:
Parrot_v?n?sprintf- A (nearly) drop-in replacement for v?n?sprintf.
Parrot_v?sprintf_c- Takes a C-string format, returns a Parrot string.
Parrot_v?sprintf_s- Takes a Parrot string format, returns a Parrot string.
- So the
_means "returns Parrot string" and the other letter indicates the type for the format.
STRING *Parrot_vsprintf_s(Interp *interp, STRING *pat, va_list args)- Almost all the other sprintf variants in this file are implemented in terms of this function (see
Parrot_psprintf()for the exception). It in turn callsParrot_sprintf_format()(see src/spf_render.c). STRING *Parrot_vsprintf_c(Interp *interp, const char *pat, va_list args)- C string version of
Parrot_vsprintf_s(). void Parrot_vsnprintf(Interp *interp, char *targ, size_t len, const char *pat, va_list args)- Similar to
Parrot_vsprintf()but with an option to specify the length (len) of the returned C string. STRING *Parrot_sprintf_s(Interp *interp, STRING *pat, ...)- Calls
Parrot_vsprintf_s()with theva_listobtained from.... STRING *Parrot_sprintf_c(Interp *interp, const char *pat, ...)- C string version of
Parrot_sprintf_s(). void Parrot_snprintf(Interp *interp, char *targ, size_t len, const char *pat, ...)- Similar to
Parrot_sprintf()but with an option to specify the length (len) of the returned C string. STRING *Parrot_psprintf(Interp *interp, STRING *pat, PMC *ary)- Calls
Parrot_sprintf_format()with the insertion arguments in anArrayPMC.
SEE ALSO
src/misc.h, src/spf_vtable.c, src/spf_render.c.
HISTORY
This was once a simple, vararg-based implementation that existed completely within this file. When the file grew to be nearly 1,000 lines long, I split it into three. --BD
