1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 #include "tool_setup.h"
23
24 #define ENABLE_CURLX_PRINTF
25 /* use our own printf() functions */
26 #include "curlx.h"
27
28 #include "tool_cfgable.h"
29 #include "tool_msgs.h"
30
31 #include "memdebug.h" /* keep this as LAST include */
32
33 #define WARN_PREFIX "Warning: "
34 #define NOTE_PREFIX "Note: "
35 #define ERROR_PREFIX "curl: "
36
voutf(struct GlobalConfig * config,const char * prefix,const char * fmt,va_list ap)37 static void voutf(struct GlobalConfig *config,
38 const char *prefix,
39 const char *fmt,
40 va_list ap)
41 {
42 size_t width = (79 - strlen(prefix));
43 if(!config->mute) {
44 size_t len;
45 char *ptr;
46 char *print_buffer;
47
48 print_buffer = curlx_mvaprintf(fmt, ap);
49 if(!print_buffer)
50 return;
51 len = strlen(print_buffer);
52
53 ptr = print_buffer;
54 while(len > 0) {
55 fputs(prefix, config->errors);
56
57 if(len > width) {
58 size_t cut = width-1;
59
60 while(!ISSPACE(ptr[cut]) && cut) {
61 cut--;
62 }
63 if(0 == cut)
64 /* not a single cutting position was found, just cut it at the
65 max text width then! */
66 cut = width-1;
67
68 (void)fwrite(ptr, cut + 1, 1, config->errors);
69 fputs("\n", config->errors);
70 ptr += cut + 1; /* skip the space too */
71 len -= cut + 1;
72 }
73 else {
74 fputs(ptr, config->errors);
75 len = 0;
76 }
77 }
78 curl_free(print_buffer);
79 }
80 }
81
82 /*
83 * Emit 'note' formatted message on configured 'errors' stream, if verbose was
84 * selected.
85 */
notef(struct GlobalConfig * config,const char * fmt,...)86 void notef(struct GlobalConfig *config, const char *fmt, ...)
87 {
88 va_list ap;
89 va_start(ap, fmt);
90 if(config->tracetype)
91 voutf(config, NOTE_PREFIX, fmt, ap);
92 va_end(ap);
93 }
94
95 /*
96 * Emit warning formatted message on configured 'errors' stream unless
97 * mute (--silent) was selected.
98 */
99
warnf(struct GlobalConfig * config,const char * fmt,...)100 void warnf(struct GlobalConfig *config, const char *fmt, ...)
101 {
102 va_list ap;
103 va_start(ap, fmt);
104 voutf(config, WARN_PREFIX, fmt, ap);
105 va_end(ap);
106 }
107 /*
108 * Emit help formatted message on given stream. This is for errors with or
109 * related to command line arguments.
110 */
helpf(FILE * errors,const char * fmt,...)111 void helpf(FILE *errors, const char *fmt, ...)
112 {
113 if(fmt) {
114 va_list ap;
115 va_start(ap, fmt);
116 fputs("curl: ", errors); /* prefix it */
117 vfprintf(errors, fmt, ap);
118 va_end(ap);
119 }
120 fprintf(errors, "curl: try 'curl --help' "
121 #ifdef USE_MANUAL
122 "or 'curl --manual' "
123 #endif
124 "for more information\n");
125 }
126
127 /*
128 * Emit error message on error stream if not muted. When errors are not tied
129 * to command line arguments, use helpf() for such errors.
130 */
errorf(struct GlobalConfig * config,const char * fmt,...)131 void errorf(struct GlobalConfig *config, const char *fmt, ...)
132 {
133 if(!config->mute) {
134 va_list ap;
135 va_start(ap, fmt);
136 voutf(config, ERROR_PREFIX, fmt, ap);
137 va_end(ap);
138 }
139 }
140