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1.1 root 1: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2: /*
3: * The contents of this file are subject to the Mozilla Public
4: * License Version 1.1 (the "License"); you may not use this file
5: * except in compliance with the License. You may obtain a copy of
6: * the License at http://www.mozilla.org/MPL/
7: *
8: * Software distributed under the License is distributed on an "AS
9: * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
10: * implied. See the License for the specific language governing
11: * rights and limitations under the License.
12: *
13: * The Original Code is the Netscape Portable Runtime (NSPR).
14: *
15: * The Initial Developer of the Original Code is Netscape
16: * Communications Corporation. Portions created by Netscape are
17: * Copyright (C) 1998-2000 Netscape Communications Corporation. All
18: * Rights Reserved.
19: *
20: * Contributor(s):
21: *
22: * Alternatively, the contents of this file may be used under the
23: * terms of the GNU General Public License Version 2 or later (the
24: * "GPL"), in which case the provisions of the GPL are applicable
25: * instead of those above. If you wish to allow use of your
26: * version of this file only under the terms of the GPL and not to
27: * allow others to use your version of this file under the MPL,
28: * indicate your decision by deleting the provisions above and
29: * replace them with the notice and other provisions required by
30: * the GPL. If you do not delete the provisions above, a recipient
31: * may use your version of this file under either the MPL or the
32: * GPL.
33: */
34:
35: #ifndef prprf_h___
36: #define prprf_h___
37:
38: /*
39: ** API for PR printf like routines. Supports the following formats
40: ** %d - decimal
41: ** %u - unsigned decimal
42: ** %x - unsigned hex
43: ** %X - unsigned uppercase hex
44: ** %o - unsigned octal
45: ** %hd, %hu, %hx, %hX, %ho - 16-bit versions of above
46: ** %ld, %lu, %lx, %lX, %lo - 32-bit versions of above
47: ** %lld, %llu, %llx, %llX, %llo - 64 bit versions of above
48: ** %s - string
49: ** %c - character
50: ** %p - pointer (deals with machine dependent pointer size)
51: ** %f - float
52: ** %g - float
53: */
54: #include "prtypes.h"
55: #include "prio.h"
56: #include <stdio.h>
57: #include <stdarg.h>
58:
59: PR_BEGIN_EXTERN_C
60:
61: /*
62: ** sprintf into a fixed size buffer. Guarantees that a NUL is at the end
63: ** of the buffer. Returns the length of the written output, NOT including
64: ** the NUL, or (PRUint32)-1 if an error occurs.
65: */
66: NSPR_API(PRUint32) PR_snprintf(char *out, PRUint32 outlen, const char *fmt, ...);
67:
68: /*
69: ** sprintf into a PR_MALLOC'd buffer. Return a pointer to the malloc'd
70: ** buffer on success, NULL on failure. Call "PR_smprintf_free" to release
71: ** the memory returned.
72: */
73: NSPR_API(char*) PR_smprintf(const char *fmt, ...);
74:
75: /*
76: ** Free the memory allocated, for the caller, by PR_smprintf
77: */
78: NSPR_API(void) PR_smprintf_free(char *mem);
79:
80: /*
81: ** "append" sprintf into a PR_MALLOC'd buffer. "last" is the last value of
82: ** the PR_MALLOC'd buffer. sprintf will append data to the end of last,
83: ** growing it as necessary using realloc. If last is NULL, PR_sprintf_append
84: ** will allocate the initial string. The return value is the new value of
85: ** last for subsequent calls, or NULL if there is a malloc failure.
86: */
87: NSPR_API(char*) PR_sprintf_append(char *last, const char *fmt, ...);
88:
89: /*
90: ** sprintf into a function. The function "f" is called with a string to
91: ** place into the output. "arg" is an opaque pointer used by the stuff
92: ** function to hold any state needed to do the storage of the output
93: ** data. The return value is a count of the number of characters fed to
94: ** the stuff function, or (PRUint32)-1 if an error occurs.
95: */
96: typedef PRIntn (*PRStuffFunc)(void *arg, const char *s, PRUint32 slen);
97:
98: NSPR_API(PRUint32) PR_sxprintf(PRStuffFunc f, void *arg, const char *fmt, ...);
99:
100: /*
101: ** fprintf to a PRFileDesc
102: */
103: NSPR_API(PRUint32) PR_fprintf(struct PRFileDesc* fd, const char *fmt, ...);
104:
105: /*
106: ** va_list forms of the above.
107: */
108: NSPR_API(PRUint32) PR_vsnprintf(char *out, PRUint32 outlen, const char *fmt, va_list ap);
109: NSPR_API(char*) PR_vsmprintf(const char *fmt, va_list ap);
110: NSPR_API(char*) PR_vsprintf_append(char *last, const char *fmt, va_list ap);
111: NSPR_API(PRUint32) PR_vsxprintf(PRStuffFunc f, void *arg, const char *fmt, va_list ap);
112: NSPR_API(PRUint32) PR_vfprintf(struct PRFileDesc* fd, const char *fmt, va_list ap);
113:
114: /*
115: ***************************************************************************
116: ** FUNCTION: PR_sscanf
117: ** DESCRIPTION:
118: ** PR_sscanf() scans the input character string, performs data
119: ** conversions, and stores the converted values in the data objects
120: ** pointed to by its arguments according to the format control
121: ** string.
122: **
123: ** PR_sscanf() behaves the same way as the sscanf() function in the
124: ** Standard C Library (stdio.h), with the following exceptions:
125: ** - PR_sscanf() handles the NSPR integer and floating point types,
126: ** such as PRInt16, PRInt32, PRInt64, and PRFloat64, whereas
127: ** sscanf() handles the standard C types like short, int, long,
128: ** and double.
129: ** - PR_sscanf() has no multibyte character support, while sscanf()
130: ** does.
131: ** INPUTS:
132: ** const char *buf
133: ** a character string holding the input to scan
134: ** const char *fmt
135: ** the format control string for the conversions
136: ** ...
137: ** variable number of arguments, each of them is a pointer to
138: ** a data object in which the converted value will be stored
139: ** OUTPUTS: none
140: ** RETURNS: PRInt32
141: ** The number of values converted and stored.
142: ** RESTRICTIONS:
143: ** Multibyte characters in 'buf' or 'fmt' are not allowed.
144: ***************************************************************************
145: */
146:
147: NSPR_API(PRInt32) PR_sscanf(const char *buf, const char *fmt, ...);
148:
149: PR_END_EXTERN_C
150:
151: #endif /* prprf_h___ */
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