1 | #include <stdio.h> |
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2 | #include <stdlib.h> |
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3 | #include <stdbool.h> |
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4 | #include <string.h> |
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5 | #include <ctype.h> |
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6 | |
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7 | #include "inifile.h" |
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8 | |
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9 | char* inifile_cleanstr(char* str) |
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10 | { |
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11 | int i; |
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12 | for (i = strlen(str) - 1; i >= 0; i --) |
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13 | if (!isspace(str[i])) |
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14 | { |
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15 | str[i + 1] = '\0'; |
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16 | break; |
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17 | } |
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18 | |
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19 | while (isspace(*str)) |
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20 | str++; |
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21 | |
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22 | return str; |
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23 | } |
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24 | |
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25 | int64_t inifile_parseint(const char* str, bool issigned) |
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26 | { |
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27 | int64_t ret = 0; |
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28 | bool neg = false; |
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29 | if (str[0] == '0' && str[1] == 'x') |
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30 | { |
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31 | int i; |
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32 | if (str[2] == '\0') |
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33 | return 0x100000000LL; |
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34 | |
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35 | for (i = 0, str += 2; *str; i++, str++) |
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36 | { |
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37 | if (i == 8) |
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38 | return 0x100000000LL; |
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39 | |
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40 | ret <<= 4; |
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41 | if (*str >= '0' && *str <= '9') |
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42 | ret |= *str - '0'; |
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43 | else if (*str >= 'a' && *str <= 'f') |
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44 | ret |= *str - 'a' + 10; |
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45 | else if (*str >= 'A' && *str <= 'F') |
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46 | ret |= *str - 'A' + 10; |
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47 | else |
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48 | return 0x100000000LL; |
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49 | } |
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50 | return ret; |
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51 | } |
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52 | else if ((*str >= '0' && *str <= '9') || (neg = (*str == '-'))) |
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53 | { |
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54 | int i; |
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55 | if (neg) |
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56 | str++; |
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57 | for (i = 0; *str; i++, str++) |
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58 | { |
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59 | if (i == 10) |
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60 | return 0x100000000LL; |
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61 | else if (i == 9 && !issigned && (ret > 429496729LL || (ret == 429496729LL && *str > '5'))) |
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62 | return 0x100000000LL; |
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63 | else if (i == 9 && issigned && (ret > 214748364LL || (ret == 214748364LL && *str > (neg ? '8' : '7')))) |
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64 | return 0x100000000LL; |
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65 | |
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66 | ret *= 10; |
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67 | if (*str >= '0' && *str <= '9') |
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68 | ret += *str - '0'; |
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69 | else |
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70 | return 0x100000000LL; |
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71 | } |
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72 | if (neg) |
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73 | ret *= -1; |
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74 | return ret; |
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75 | } |
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76 | else |
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77 | return 0x100000000LL; |
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78 | } |
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79 | |
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80 | bool inifile_read(const char* filename, inifile_callback callback) |
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81 | { |
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82 | FILE* fp = fopen(filename, "r"); |
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83 | char* inisection = ""; |
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84 | char readbuf[4096] = ""; |
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85 | char* readptr; |
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86 | bool success = true; |
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87 | bool newsection = false; |
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88 | |
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89 | if (!fp) |
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90 | return inifile_cantread; |
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91 | |
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92 | while ((readptr = fgets(readbuf, sizeof(readbuf), fp))) // Loop through each line. |
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93 | { |
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94 | while (isspace(readptr[0])) // Skip whitespace. |
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95 | readptr++; |
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96 | |
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97 | if (readptr[0] == '\0' || readptr[0] == '#' || readptr[0] == '!') // Skip empty lines and comments. |
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98 | continue; |
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99 | else if (readptr[0] == '[' && readptr[1] != ']') // It's a section header. |
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100 | { |
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101 | int i; |
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102 | for (i = 2; readptr[i]; i ++) // Look for the ] |
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103 | if (readptr[i] == ']') |
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104 | break; |
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105 | |
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106 | if (readptr[i]) // Replace with a null or crash with error. |
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107 | readptr[i] = '\0'; |
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108 | else |
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109 | { |
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110 | success = false; |
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111 | break; |
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112 | } |
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113 | |
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114 | if (inisection[0]) |
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115 | free(inisection); |
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116 | inisection = strdup(readptr + 1); // Skip the first [ |
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117 | newsection = true; |
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118 | } |
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119 | else // It's a value. |
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120 | { |
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121 | int i; |
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122 | int equals = 0; |
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123 | for (i = 0; readptr[i]; i ++) // Find the = |
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124 | if (readptr[i] == '=') |
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125 | equals = i; |
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126 | |
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127 | if (readptr[i - 1] == '\n') |
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128 | readptr[i - 1] = '\0'; // Remove the trailing newline. |
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129 | |
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130 | if (equals) |
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131 | { |
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132 | readptr[equals] = '\0'; |
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133 | if (!callback(inisection, newsection, readptr, readptr + equals + 1)) // If the callback is false, exit. |
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134 | break; |
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135 | newsection = false; |
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136 | } |
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137 | else // If there's no equals, crash with error. |
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138 | { |
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139 | success = false; |
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140 | break; |
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141 | } |
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142 | } |
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143 | } |
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144 | |
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145 | if (inisection[0]) |
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146 | free(inisection); |
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147 | |
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148 | fclose(fp); |
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149 | return success; |
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150 | } |
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