str.c



    1 //  Cini is a command line tool to parse ini files
    2 //  Copyright (C) 2018  Aaron Ball <nullspoon@oper.io>
    3 // 
    4 //  This program is free software: you can redistribute it and/or modify
    5 //  it under the terms of the GNU General Public License as published by
    6 //  the Free Software Foundation, either version 3 of the License, or
    7 //  (at your option) any later version.
    8 // 
    9 //  This program is distributed in the hope that it will be useful,
   10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
   11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   12 //  GNU General Public License for more details.
   13 // 
   14 //  You should have received a copy of the GNU General Public License
   15 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
   16 
   17 #include "str.h"
   18 void trim(char* str, char* out) {
   19   int start = 0;
   20   int end   = 0;
   21   int i     = 0;
   22 
   23   // Read backwards
   24   for(i = strlen(str); i >= 0; i--) {
   25     if(str[i] != ' '
   26         && str[i] != '\0'
   27         && str[i] != '\r'
   28         && str[i] != '\n'
   29         && str[i] != '\t') {
   30       // Once we find the first non-whitespace char, insert \0 after
   31       end = i;
   32       break;
   33     }
   34   }
   35 
   36   // Read forwards to find first non-whitespace char
   37   for(i = 0;i<strlen(str);i++) {
   38     if(str[i] != ' '
   39         && str[i] != '\0'
   40         && str[i] != '\r'
   41         && str[i] != '\n'
   42         && str[i] != '\t') {
   43       start = i;
   44       break;
   45     }
   46   }
   47 
   48   if(end == start) { 
   49     out[0] = '\0';
   50   } else {
   51     strncpy(out, &str[start], end - start + 2);
   52     str[end + 1] = '\0';
   53   }
   54 }
   55 
   56 void split(char* str, char delim, int reqcol, char* buf) {
   57   int i     = 0;
   58   int col   = 0;
   59   int bufi  = 0;
   60 
   61   while(i < strlen(str)) {
   62     if(str[i] == delim) {
   63       col++;
   64       i++;
   65       continue;
   66     } else {
   67       if(col == reqcol) {
   68         buf[bufi] = str[i];
   69         bufi++;
   70       }
   71     }
   72     i++;
   73   }
   74 
   75   buf[bufi] = '\0';
   76 }