summaryrefslogtreecommitdiffstats
path: root/nsprpub/pr/include/prprf.h
diff options
context:
space:
mode:
Diffstat (limited to 'nsprpub/pr/include/prprf.h')
-rw-r--r--nsprpub/pr/include/prprf.h122
1 files changed, 122 insertions, 0 deletions
diff --git a/nsprpub/pr/include/prprf.h b/nsprpub/pr/include/prprf.h
new file mode 100644
index 000000000..440be888b
--- /dev/null
+++ b/nsprpub/pr/include/prprf.h
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef prprf_h___
+#define prprf_h___
+
+/*
+** API for PR printf like routines. Supports the following formats
+** %d - decimal
+** %u - unsigned decimal
+** %x - unsigned hex
+** %X - unsigned uppercase hex
+** %o - unsigned octal
+** %hd, %hu, %hx, %hX, %ho - 16-bit versions of above
+** %ld, %lu, %lx, %lX, %lo - 32-bit versions of above
+** %lld, %llu, %llx, %llX, %llo - 64 bit versions of above
+** %s - string
+** %c - character
+** %p - pointer (deals with machine dependent pointer size)
+** %f - float
+** %g - float
+*/
+#include "prtypes.h"
+#include "prio.h"
+#include <stdio.h>
+#include <stdarg.h>
+
+PR_BEGIN_EXTERN_C
+
+/*
+** sprintf into a fixed size buffer. Guarantees that a NUL is at the end
+** of the buffer. Returns the length of the written output, NOT including
+** the NUL, or (PRUint32)-1 if an error occurs.
+*/
+NSPR_API(PRUint32) PR_snprintf(char *out, PRUint32 outlen, const char *fmt, ...);
+
+/*
+** sprintf into a PR_MALLOC'd buffer. Return a pointer to the malloc'd
+** buffer on success, NULL on failure. Call "PR_smprintf_free" to release
+** the memory returned.
+*/
+NSPR_API(char*) PR_smprintf(const char *fmt, ...);
+
+/*
+** Free the memory allocated, for the caller, by PR_smprintf
+*/
+NSPR_API(void) PR_smprintf_free(char *mem);
+
+/*
+** "append" sprintf into a PR_MALLOC'd buffer. "last" is the last value of
+** the PR_MALLOC'd buffer. sprintf will append data to the end of last,
+** growing it as necessary using realloc. If last is NULL, PR_sprintf_append
+** will allocate the initial string. The return value is the new value of
+** last for subsequent calls, or NULL if there is a malloc failure.
+*/
+NSPR_API(char*) PR_sprintf_append(char *last, const char *fmt, ...);
+
+/*
+** sprintf into a function. The function "f" is called with a string to
+** place into the output. "arg" is an opaque pointer used by the stuff
+** function to hold any state needed to do the storage of the output
+** data. The return value is a count of the number of characters fed to
+** the stuff function, or (PRUint32)-1 if an error occurs.
+*/
+typedef PRIntn (*PRStuffFunc)(void *arg, const char *s, PRUint32 slen);
+
+NSPR_API(PRUint32) PR_sxprintf(PRStuffFunc f, void *arg, const char *fmt, ...);
+
+/*
+** fprintf to a PRFileDesc
+*/
+NSPR_API(PRUint32) PR_fprintf(struct PRFileDesc* fd, const char *fmt, ...);
+
+/*
+** va_list forms of the above.
+*/
+NSPR_API(PRUint32) PR_vsnprintf(char *out, PRUint32 outlen, const char *fmt, va_list ap);
+NSPR_API(char*) PR_vsmprintf(const char *fmt, va_list ap);
+NSPR_API(char*) PR_vsprintf_append(char *last, const char *fmt, va_list ap);
+NSPR_API(PRUint32) PR_vsxprintf(PRStuffFunc f, void *arg, const char *fmt, va_list ap);
+NSPR_API(PRUint32) PR_vfprintf(struct PRFileDesc* fd, const char *fmt, va_list ap);
+
+/*
+***************************************************************************
+** FUNCTION: PR_sscanf
+** DESCRIPTION:
+** PR_sscanf() scans the input character string, performs data
+** conversions, and stores the converted values in the data objects
+** pointed to by its arguments according to the format control
+** string.
+**
+** PR_sscanf() behaves the same way as the sscanf() function in the
+** Standard C Library (stdio.h), with the following exceptions:
+** - PR_sscanf() handles the NSPR integer and floating point types,
+** such as PRInt16, PRInt32, PRInt64, and PRFloat64, whereas
+** sscanf() handles the standard C types like short, int, long,
+** and double.
+** - PR_sscanf() has no multibyte character support, while sscanf()
+** does.
+** INPUTS:
+** const char *buf
+** a character string holding the input to scan
+** const char *fmt
+** the format control string for the conversions
+** ...
+** variable number of arguments, each of them is a pointer to
+** a data object in which the converted value will be stored
+** OUTPUTS: none
+** RETURNS: PRInt32
+** The number of values converted and stored.
+** RESTRICTIONS:
+** Multibyte characters in 'buf' or 'fmt' are not allowed.
+***************************************************************************
+*/
+
+NSPR_API(PRInt32) PR_sscanf(const char *buf, const char *fmt, ...);
+
+PR_END_EXTERN_C
+
+#endif /* prprf_h___ */