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83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
/* Copyright (C) 2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <stdio.h>
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#include <my_global.h>
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#include <my_sys.h>
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#include <string.h>
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/* buf should be of appropriate size. Otherwise the word will be truncated */
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static int get_word(FILE *file, char *buf, size_t size)
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{
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int currchar;
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currchar= getc(file);
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/* skip space */
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while (my_isspace(default_charset_info, (char) currchar) &&
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currchar != EOF && size > 1)
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{
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currchar= getc(file);
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}
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while (!my_isspace(default_charset_info, (char) currchar) &&
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currchar != EOF && size > 1)
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{
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*buf++= (char) currchar;
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currchar= getc(file);
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size--;
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}
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*buf= '\0';
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return 0;
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}
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int parse_output_and_get_value(const char *command, const char *word,
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char *result, size_t result_len)
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{
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FILE *output;
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int wordlen;
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wordlen= strlen(word);
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output= popen(command, "r");
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/*
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We want fully buffered stream. We also want system to
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allocate appropriate buffer.
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*/
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setvbuf(output, NULL, _IOFBF, 0);
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get_word(output, result, result_len);
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while (strncmp(word, result, wordlen) && *result != '\0')
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{
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get_word(output, result, result_len);
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}
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/*
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If we have found the word, return the next one. This is usually
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an option value.
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*/
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if (*result != '\0')
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get_word(output, result, result_len);
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if (pclose(output))
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return 1;
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return 0;
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}
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