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annotate common/strhelp.c @ 135:3fb6ddd6b70d

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str_trim: do nothing if *s is NULL.
author Sascha Wilde <wilde@intevation.de>
date Mon, 24 Mar 2014 15:34:28 +0100
parents 5f830969e4a1
children 5fa4791d6d0e
rev   line source
134
5f830969e4a1 Added missing include.
Sascha Wilde <wilde@intevation.de>
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diff changeset
1 #include <ctype.h>
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2 #include <stdbool.h>
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <string.h>
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6 #include <assert.h>
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7
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8 static void
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9 out_of_core(void)
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10 {
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11 fputs("\nfatal: out of memory\n", stderr);
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12 exit(2);
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13 }
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14 void *
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15 xmalloc( size_t n )
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16 {
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17 void *p = malloc( n );
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18 if( !p )
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19 out_of_core();
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20 return p;
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21 }
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22
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23 void *
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24 xrealloc( void *a, size_t n )
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25 {
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26 void *p = realloc( a, n );
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27 if( !p )
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28 out_of_core();
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29 return p;
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30 }
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31
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32 char *
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33 xstrndup( const char *string, const size_t len )
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34 {
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35 char *p = xmalloc( len + 1 );
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36 memcpy( p, string, len );
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37 p[len] = '\0';
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38 return p;
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39 }
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40
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41 unsigned int
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42 strv_length (char **str_array)
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43 {
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44 unsigned int i = 0;
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45
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46 if (!str_array)
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47 return 0;
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48
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49 while (str_array[i])
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50 ++i;
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51
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52 return i;
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53 }
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54
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55 void strv_append (char ***pArray, const char *string, const size_t len)
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56 {
60
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57 unsigned int old_len = 0;
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58
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59 if (!*pArray) {
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60 *pArray = xmalloc(2 * sizeof(char*));
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61 (*pArray)[0] = xstrndup(string, len);
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62 (*pArray)[1] = NULL;
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63 return;
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64 }
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65 old_len = strv_length(*pArray);
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66 *pArray = xrealloc(*pArray, sizeof(char**) * (old_len + 2));
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67
60
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68 (*pArray)[old_len] = xstrndup(string, len);
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69 (*pArray)[old_len + 1] = NULL;
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70 }
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71
91
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72 void
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73 str_append_str(char **pDst, size_t *dst_len, const char *appendage, const size_t len)
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74 {
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75 if (!appendage)
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76 return;
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77
91
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78 if (!(*pDst)) {
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79 *pDst = xstrndup(appendage, len);
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80 *dst_len = len;
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81 } else {
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82 size_t new_size = (*dst_len) + len + 1;
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83 char *p_old = *pDst;
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84 *pDst = xmalloc(new_size);
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85 strncpy(*pDst, p_old, *dst_len);
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86 strncpy(*pDst + *dst_len, appendage, len);
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87 *dst_len = new_size - 1;
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88 (*pDst)[*dst_len] = '\0';
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89 free (p_old);
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90 }
59
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91 }
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92
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93 void
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94 strv_free (char **str_array)
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95 {
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96 if (str_array)
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97 {
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98 int i;
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99
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100 for (i = 0; str_array[i] != NULL; i++)
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101 free (str_array[i]);
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102
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103 free (str_array);
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104 }
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105 }
131
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106
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107 bool
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108 str_equal (char *s1, char *s2)
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109 {
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110 size_t l1 = strlen(s1);
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111 size_t l2 = strlen(s2);
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112 if ((l1 == l2) &&
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113 (strncmp(s1, s2, l1) == 0))
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114 return true;
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115 else
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116 return false;
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117 }
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118
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119 bool
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120 str_starts_with (char *s1, char *s2)
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121 {
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122 if (strncmp(s1, s2, strlen(s2)) == 0)
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123 return true;
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124 else
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125 return false;
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126 }
133
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127
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128 void
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129 str_trim (char **s)
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130 {
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131 size_t i;
135
3fb6ddd6b70d str_trim: do nothing if *s is NULL.
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132 if (*s != NULL)
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133 {
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134 while (isspace(**s))
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135 (*s)++;
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136 i = strlen(*s);
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137 while (isspace((*s)[--i]))
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138 (*s)[i] = '\0';
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139 }
133
c719d3fdbc15 Added functrion to trim white space from string.
Sascha Wilde <wilde@intevation.de>
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http://wald.intevation.org/projects/trustbridge/