libopkg/str_util.c

   1 /* str_utils.c - the opkg package management system
   2
   3    Carl D. Worth
   4
   5    Copyright (C) 2001 University of Southern California
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include "includes.h"
  19
  20 int str_starts_with(const char *str, const char *prefix)
  21 {
  22     return (strncmp(str, prefix, strlen(prefix)) == 0);
  23 }
  24
  25 int str_ends_with(const char *str, const char *suffix)
  26 {
  27     int suffix_len;
  28     int str_len;
  29
  30     str_len = strlen(str);
  31     suffix_len = strlen(suffix);
  32
  33     if (str_len < suffix_len) {
  34         return 0;
  35     }
  36
  37     return (strcmp(str + str_len - suffix_len, suffix) == 0);
  38 }
  39
  40 int str_chomp(char *str)
  41 {
  42     if (str[strlen(str) - 1] == '\n') {
  43         str[strlen(str) - 1] = '\0';
  44         return 1;
  45     }
  46     return 0;
  47 }
  48
  49 int str_tolower(char *str)
  50 {
  51     while (*str) {
  52         *str = tolower(*str);
  53         str++;
  54     }
  55
  56     return 0;
  57 }
  58
  59 int str_toupper(char *str)
  60 {
  61     while (*str) {
  62         *str = toupper(*str);
  63         str++;
  64     }
  65
  66     return 0;
  67 }
  68
  69 char *str_dup_safe(const char *str)
  70 {
  71     return str ? strdup(str) : NULL;
  72 }
  73