Mercurial > trustbridge
annotate common/strhelp.h @ 806:bb02101a7f4b
UI Application, new German wording.
author | Bernhard Reiter <bernhard@intevation.de> |
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date | Tue, 15 Jul 2014 16:07:15 +0200 |
parents | 17e1c8f37d72 |
children | ffdc8cba139a |
rev | line source |
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404 | 1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik |
2 * Software engineering by Intevation GmbH | |
3 * | |
4 * This file is Free Software under the GNU GPL (v>=2) | |
5 * and comes with ABSOLUTELY NO WARRANTY! | |
6 * See LICENSE.txt for details. | |
7 */ | |
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8 #ifndef STRHELP_H |
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9 #define STRHELP_H |
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10 |
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11 #ifdef __cplusplus |
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12 extern "C" { |
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13 #endif |
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14 |
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15 #include <stdbool.h> |
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16 #include <stddef.h> |
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17 |
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18 /** |
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19 * @file strhelp.h |
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20 * @brief Helper functions for c strings and memory management |
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21 * @details strhelp contains terminating memory allocation functions and |
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22 * some conveniance functions to work with c strings or arrays of c |
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23 * strings. |
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24 */ |
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25 |
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26 void *xmalloc( size_t n ); |
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27 void *xrealloc( void *a, size_t n ); |
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28 void *xcalloc( size_t n, size_t m ); |
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29 char *xstrndup( const char *string, const size_t len ); |
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30 void xfree ( void *p ); |
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31 |
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32 /** |
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33 * @brief Terminating variant of asprintf |
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34 * |
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35 * This function behaves exactly like asprintf(3) but will terminate |
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36 * when an error occures (usally that means that memoy allocation |
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37 * failed). |
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38 */ |
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39 int xasprintf (char **strp, const char *fmt, ...); |
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40 |
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41 /** |
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42 * @brief Returns the length of the given %NULL-terminated |
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43 * string array str_array. |
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44 * @param[in] str_array a %NULL-terminated array of strings |
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45 * @returns length of str_array. |
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46 */ |
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47 unsigned int strv_length (char **str_array); |
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48 |
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49 /** |
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50 * @brief append a string to a NULL terminated array of strings. |
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51 * |
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52 * @param[inout] pArray pointer to the NULL terminated list of string pointers. |
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53 * @param[in] string pointer to the string to append to the list. |
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54 * @param[in] len length of the string to append to the list |
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55 */ |
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56 void strv_append (char ***pArray, const char *string, const size_t len); |
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57 |
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58 /** |
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59 * @brief append a string to another string. |
59
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60 * |
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61 * @param[inout] pDst pointer to the string to be extended. |
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62 * @param[inout] dst_len length of the dst string. Will be modified. |
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63 * @param[in] appendage pointer to the string to append. |
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64 * @param[in] len length of the string to append. |
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65 */ |
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66 void str_append_str (char **pDst, size_t *dst_len, const char *appendage, |
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67 const size_t len); |
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68 |
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69 /** |
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70 * @brief Frees the given %NULL-terminated string array. |
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71 * @param[inout] str_array a %NULL-terminated array of strings |
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72 */ |
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73 void strv_free (char **str_array); |
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74 |
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75 /** |
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76 * @brief Checks whether two strings exactly match |
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77 * @param[in] s1 the first string |
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78 * @param[in] s2 the second string |
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79 * @returns true if s1 and s2 are equal |
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80 */ |
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81 bool str_equal (char *s1, char *s2); |
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82 |
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83 /** |
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84 * @brief Checks whether s2 exactly matches the beginning of s1. |
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85 * @param[in] s1 the string who's beginning is searched |
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86 * @param[in] s2 the string which is searched for |
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87 * @returns true if s1 starts with s2, false otherwise |
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88 */ |
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89 bool str_starts_with (char *s1, char *s2); |
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90 |
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91 /** |
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92 * @brief Trims all white space from the start and end of string. |
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93 * @details the start of the string is trimmed by setting *s to the |
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94 * first non white space character. The end is trimmed by setting the |
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95 * first character after the last non white space character to \0. |
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96 * @param[inout] s ponter to the string to strip |
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97 */ |
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98 bool str_trim (char **s); |
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99 |
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100 /** @brief decode base64 encoded data |
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101 * |
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102 * The memory allocated for dest needs to be free'd by the |
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103 * caller. |
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104 * |
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105 * _Input warning:_ |
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106 * If the input contains invalid base64 characters an error |
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107 * is returned. |
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108 * |
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109 * If the input is invalid base64 but consists of valid |
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110 * base64 characters _no error_ is returned and dst contains |
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111 * the valid input up to the error. |
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112 * |
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113 * @param [out] dst Pointer to the destination. Needs to be NULL |
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114 * @param [out] dst_size Size allocated for the destination. |
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115 * @param [in] src Pointer to the base64 encoded data. |
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116 * @param [in] src_size Size of the encoded data. |
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117 * |
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118 * @returns 0 on success a polarssl error or -1 otherwise |
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119 */ |
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120 int str_base64_decode(char **dst, size_t *dst_size, char *src, |
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121 size_t src_size); |
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122 |
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123 #ifdef WIN32 |
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124 |
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125 /** @brief convert a utf8 string to utf16 wchar |
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126 * |
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127 * @param[in] string utf8 string. Must be at least len characters long. |
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128 * @param[in] len number of characters to be converted. |
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129 * |
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130 * @returns pointer to a newly allocated wchar array. NULL on error. |
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131 * |
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132 **/ |
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133 wchar_t *utf8_to_wchar (const char *string, size_t len); |
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134 |
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135 /** @brief convert a utf16 string to utf8 |
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136 * |
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137 * @param[in] string utf16 string. Must be at least len characters long. |
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138 * @param[in] len number of characters to be converted. |
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139 * |
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140 * @returns pointer to a newly allocated char array. NULL on error. |
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141 * |
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142 **/ |
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143 char *wchar_to_utf8 (const wchar_t *string, size_t len); |
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144 #endif |
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145 |
184
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146 #ifdef __cplusplus |
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147 } |
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148 #endif |
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149 |
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150 #endif |