2012-05-28 16:58:16 +08:00
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2012-10-19 08:44:41 +08:00
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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2012-05-28 16:58:16 +08:00
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#ifndef jsprf_h___
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#define jsprf_h___
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/*
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** API for PR printf like routines. Supports the following formats
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** %d - decimal
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** %u - unsigned decimal
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** %x - unsigned hex
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** %X - unsigned uppercase hex
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** %o - unsigned octal
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** %hd, %hu, %hx, %hX, %ho - 16-bit versions of above
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** %ld, %lu, %lx, %lX, %lo - 32-bit versions of above
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** %lld, %llu, %llx, %llX, %llo - 64 bit versions of above
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** %s - string
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** %hs - 16-bit version of above (only available if js_CStringsAreUTF8)
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** %c - character
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** %hc - 16-bit version of above (only available if js_CStringsAreUTF8)
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** %p - pointer (deals with machine dependent pointer size)
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** %f - float
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** %g - float
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*/
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#include "jstypes.h"
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#include <stdio.h>
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#include <stdarg.h>
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JS_BEGIN_EXTERN_C
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/*
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** sprintf into a fixed size buffer. Guarantees that a NUL is at the end
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** of the buffer. Returns the length of the written output, NOT including
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** the NUL, or (uint32_t)-1 if an error occurs.
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*/
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extern JS_PUBLIC_API(uint32_t) JS_snprintf(char *out, uint32_t outlen, const char *fmt, ...);
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/*
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** sprintf into a malloc'd buffer. Return a pointer to the malloc'd
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** buffer on success, NULL on failure. Call "JS_smprintf_free" to release
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** the memory returned.
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*/
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extern JS_PUBLIC_API(char*) JS_smprintf(const char *fmt, ...);
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/*
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** Free the memory allocated, for the caller, by JS_smprintf
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*/
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extern JS_PUBLIC_API(void) JS_smprintf_free(char *mem);
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/*
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** "append" sprintf into a malloc'd buffer. "last" is the last value of
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** the malloc'd buffer. sprintf will append data to the end of last,
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** growing it as necessary using realloc. If last is NULL, JS_sprintf_append
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** will allocate the initial string. The return value is the new value of
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** last for subsequent calls, or NULL if there is a malloc failure.
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*/
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extern JS_PUBLIC_API(char*) JS_sprintf_append(char *last, const char *fmt, ...);
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/*
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** sprintf into a function. The function "f" is called with a string to
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** place into the output. "arg" is an opaque pointer used by the stuff
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** function to hold any state needed to do the storage of the output
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** data. The return value is a count of the number of characters fed to
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** the stuff function, or (uint32_t)-1 if an error occurs.
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*/
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typedef int (*JSStuffFunc)(void *arg, const char *s, uint32_t slen);
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extern JS_PUBLIC_API(uint32_t) JS_sxprintf(JSStuffFunc f, void *arg, const char *fmt, ...);
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/*
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** va_list forms of the above.
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*/
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extern JS_PUBLIC_API(uint32_t) JS_vsnprintf(char *out, uint32_t outlen, const char *fmt, va_list ap);
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extern JS_PUBLIC_API(char*) JS_vsmprintf(const char *fmt, va_list ap);
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extern JS_PUBLIC_API(char*) JS_vsprintf_append(char *last, const char *fmt, va_list ap);
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extern JS_PUBLIC_API(uint32_t) JS_vsxprintf(JSStuffFunc f, void *arg, const char *fmt, va_list ap);
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JS_END_EXTERN_C
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#endif /* jsprf_h___ */
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