src/printf.c

Mon, 24 Apr 2023 19:08:56 +0200

author
Mike Becker <universe@uap-core.de>
date
Mon, 24 Apr 2023 19:08:56 +0200
changeset 701
72a440c437e9
parent 693
494d9b20b99e
child 805
26500fc24058
permissions
-rw-r--r--

explicitly set cmake policy CMP0077

599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
1 /*
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
3 *
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
5 *
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
6 * Redistribution and use in source and binary forms, with or without
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
7 * modification, are permitted provided that the following conditions are met:
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
8 *
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
9 * 1. Redistributions of source code must retain the above copyright
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
10 * notice, this list of conditions and the following disclaimer.
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
11 *
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
12 * 2. Redistributions in binary form must reproduce the above copyright
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
13 * notice, this list of conditions and the following disclaimer in the
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
14 * documentation and/or other materials provided with the distribution.
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
15 *
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
26 * POSSIBILITY OF SUCH DAMAGE.
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
27 */
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
28
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
29 #include "cx/printf.h"
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
30
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
31 #include <stdio.h>
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
32 #include <string.h>
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
33
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
34 #ifndef CX_PRINTF_SBO_SIZE
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
35 #define CX_PRINTF_SBO_SIZE 512
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
36 #endif
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
37
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
38 int cx_fprintf(
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
39 void *stream,
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
40 cx_write_func wfc,
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
41 char const *fmt,
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
42 ...
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
43 ) {
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
44 int ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
45 va_list ap;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
46 va_start(ap, fmt);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
47 ret = cx_vfprintf(stream, wfc, fmt, ap);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
48 va_end(ap);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
49 return ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
50 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
51
644
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
52 int cx_vfprintf(
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
53 void *stream,
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
54 cx_write_func wfc,
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
55 char const *fmt,
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
56 va_list ap
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
57 ) {
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
58 char buf[CX_PRINTF_SBO_SIZE];
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
59 va_list ap2;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
60 va_copy(ap2, ap);
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
61 int ret = vsnprintf(buf, CX_PRINTF_SBO_SIZE, fmt, ap);
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
62 if (ret < 0) {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
63 return ret;
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
64 } else if (ret < CX_PRINTF_SBO_SIZE) {
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
65 return (int) wfc(buf, 1, ret, stream);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
66 } else {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
67 int len = ret + 1;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
68 char *newbuf = malloc(len);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
69 if (!newbuf) {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
70 return -1;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
71 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
72
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
73 ret = vsnprintf(newbuf, len, fmt, ap2);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
74 if (ret > 0) {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
75 ret = (int) wfc(newbuf, 1, ret, stream);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
76 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
77 free(newbuf);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
78 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
79 return ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
80 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
81
644
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
82 cxmutstr cx_asprintf_a(
693
494d9b20b99e fix missing const qualifier for allocator
Mike Becker <universe@uap-core.de>
parents: 644
diff changeset
83 CxAllocator const *allocator,
644
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
84 char const *fmt,
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
85 ...
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
86 ) {
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
87 va_list ap;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
88 cxmutstr ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
89 va_start(ap, fmt);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
90 ret = cx_vasprintf_a(allocator, fmt, ap);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
91 va_end(ap);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
92 return ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
93 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
94
644
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
95 cxmutstr cx_vasprintf_a(
693
494d9b20b99e fix missing const qualifier for allocator
Mike Becker <universe@uap-core.de>
parents: 644
diff changeset
96 CxAllocator const *a,
644
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
97 char const *fmt,
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
98 va_list ap
fcaa0891ef28 reformat file
Mike Becker <universe@uap-core.de>
parents: 643
diff changeset
99 ) {
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
100 cxmutstr s;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
101 s.ptr = NULL;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
102 s.length = 0;
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
103 char buf[CX_PRINTF_SBO_SIZE];
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
104 va_list ap2;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
105 va_copy(ap2, ap);
643
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
106 int ret = vsnprintf(buf, CX_PRINTF_SBO_SIZE, fmt, ap);
5700ba9154ab #228 make buffer sizes adjustable at compile time
Mike Becker <universe@uap-core.de>
parents: 634
diff changeset
107 if (ret > 0 && ret < CX_PRINTF_SBO_SIZE) {
599
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
108 s.ptr = cxMalloc(a, ret + 1);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
109 if (s.ptr) {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
110 s.length = (size_t) ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
111 memcpy(s.ptr, buf, ret);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
112 s.ptr[s.length] = '\0';
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
113 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
114 } else {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
115 int len = ret + 1;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
116 s.ptr = cxMalloc(a, len);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
117 if (s.ptr) {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
118 ret = vsnprintf(s.ptr, len, fmt, ap2);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
119 if (ret < 0) {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
120 free(s.ptr);
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
121 s.ptr = NULL;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
122 } else {
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
123 s.length = (size_t) ret;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
124 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
125 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
126 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
127 return s;
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
128 }
6536a9a75b71 #222 add printf-like functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
129

mercurial