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1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) 1998 - 2015, 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.haxx.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 
voutf(struct GlobalConfig * config,const char * prefix,const char * fmt,va_list ap)36 static void voutf(struct GlobalConfig *config,
37                   const char *prefix,
38                   const char *fmt,
39                   va_list ap)
40 {
41   size_t width = (79 - (int)strlen(prefix));
42   if(!config->mute) {
43     size_t len;
44     char *ptr;
45     char print_buffer[256];
46 
47     len = vsnprintf(print_buffer, sizeof(print_buffer), fmt, ap);
48 
49     ptr = print_buffer;
50     while(len > 0) {
51       fputs(prefix, config->errors);
52 
53       if(len > width) {
54         size_t cut = width-1;
55 
56         while(!ISSPACE(ptr[cut]) && cut) {
57           cut--;
58         }
59         if(0 == cut)
60           /* not a single cutting position was found, just cut it at the
61              max text width then! */
62           cut = width-1;
63 
64         (void)fwrite(ptr, cut + 1, 1, config->errors);
65         fputs("\n", config->errors);
66         ptr += cut+1; /* skip the space too */
67         len -= cut;
68       }
69       else {
70         fputs(ptr, config->errors);
71         len = 0;
72       }
73     }
74   }
75 }
76 
77 /*
78  * Emit 'note' formatted message on configured 'errors' stream, if verbose was
79  * selected.
80  */
notef(struct GlobalConfig * config,const char * fmt,...)81 void notef(struct GlobalConfig *config, const char *fmt, ...)
82 {
83   va_list ap;
84   va_start(ap, fmt);
85   if(config->tracetype)
86     voutf(config, NOTE_PREFIX, fmt, ap);
87   va_end(ap);
88 }
89 
90 /*
91  * Emit warning formatted message on configured 'errors' stream unless
92  * mute (--silent) was selected.
93  */
94 
warnf(struct GlobalConfig * config,const char * fmt,...)95 void warnf(struct GlobalConfig *config, const char *fmt, ...)
96 {
97   va_list ap;
98   va_start(ap, fmt);
99   voutf(config, WARN_PREFIX, fmt, ap);
100   va_end(ap);
101 }
102 /*
103  * Emit help formatted message on given stream.
104  */
105 
helpf(FILE * errors,const char * fmt,...)106 void helpf(FILE *errors, const char *fmt, ...)
107 {
108   va_list ap;
109   if(fmt) {
110     va_start(ap, fmt);
111     fputs("curl: ", errors); /* prefix it */
112     vfprintf(errors, fmt, ap);
113     va_end(ap);
114   }
115   fprintf(errors, "curl: try 'curl --help' "
116 #ifdef USE_MANUAL
117           "or 'curl --manual' "
118 #endif
119           "for more information\n");
120 }
121 
122