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Annotation of embedaddon/curl/src/tool_msgs.c, revision 1.1.1.1

1.1       misho       1: /***************************************************************************
                      2:  *                                  _   _ ____  _
                      3:  *  Project                     ___| | | |  _ \| |
                      4:  *                             / __| | | | |_) | |
                      5:  *                            | (__| |_| |  _ <| |___
                      6:  *                             \___|\___/|_| \_\_____|
                      7:  *
                      8:  * Copyright (C) 1998 - 2019, 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: #define ERROR_PREFIX "curl: "
                     36: 
                     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:  */
                     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: 
                    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:  */
                    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:  */
                    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: }