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Annotation of embedaddon/curl/src/tool_msgs.c, revision 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: }