1 | // This file is a part of Framsticks SDK. http://www.framsticks.com/ |
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2 | // Copyright (C) 1999-2022 Maciej Komosinski and Szymon Ulatowski. |
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3 | // See LICENSE.txt for details. |
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4 | |
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5 | #include "sstringutils.h" |
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6 | #include <common/virtfile/virtfile.h> |
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7 | #include <common/log.h> |
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8 | #include <common/nonstd.h> |
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9 | #include <common/Convert.h> |
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10 | #include <common/nonstd_span.h> |
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11 | |
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12 | int loadSString(const char* filename, SString& s, const char* framsgmodule, const char* error, bool remove_cr) |
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13 | { |
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14 | VirtFILE *f; |
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15 | int ret = 0; |
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16 | if (f = Vfopen(filename, FOPEN_READ_BINARY)) |
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17 | { |
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18 | loadSString(f, s, remove_cr); |
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19 | ret = 1; |
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20 | delete f; |
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21 | } |
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22 | else if (framsgmodule) |
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23 | logPrintf(framsgmodule, "loadSString", LOG_WARN, error ? error : "Can't open file \"%s\"", filename); |
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24 | return ret; |
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25 | } |
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26 | |
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27 | void loadSString(VirtFILE *f, SString& s, bool remove_cr) |
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28 | { |
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29 | char buf[1024]; |
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30 | int len; |
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31 | while (!f->Veof()) |
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32 | { |
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33 | len = (int)f->Vread(buf, 1, sizeof(buf)); |
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34 | s.append(buf, len); |
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35 | } |
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36 | if (remove_cr) |
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37 | removeCR(s); |
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38 | } |
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39 | |
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40 | //load single line, discarding any \r or \n found at the end, return false if nothing could be loaded (error or eof) |
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41 | bool loadSStringLine(VirtFILE* f, SString& s) |
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42 | { |
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43 | char buf[100]; |
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44 | bool eolfound = false; |
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45 | bool ret = false; |
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46 | s = SString::empty(); |
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47 | while (!eolfound) |
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48 | { |
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49 | char *r = f->Vgets(buf, sizeof(buf)); |
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50 | if (r == NULL) break; |
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51 | ret = true; |
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52 | int d = (int)strlen(r); |
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53 | if (d > 0) |
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54 | { |
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55 | if (r[d - 1] == '\n') { d--; eolfound = true; } |
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56 | if (d > 0) if (r[d - 1] == '\r') d--; |
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57 | s += SString(r, d); |
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58 | } |
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59 | } |
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60 | return ret; |
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61 | } |
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62 | |
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63 | ////////////////////////// |
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64 | |
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65 | /** "x~xx~xxx" -> "x\~xx\~xxx" */ |
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66 | int quoteTilde(SString &target) |
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67 | { |
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68 | const char* x = target.c_str(); |
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69 | SString tmp; |
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70 | char *f; |
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71 | while (1) |
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72 | { |
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73 | f = strchr((char*)x, '~'); |
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74 | if (f) |
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75 | { |
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76 | tmp.append(x, f - x); |
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77 | tmp += "\\~"; |
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78 | x = f + 1; |
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79 | } |
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80 | else |
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81 | { |
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82 | if (tmp.length() == 0) return 0; // nothing was changed! |
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83 | tmp += x; |
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84 | target = tmp; |
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85 | return 1; |
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86 | } |
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87 | } |
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88 | } |
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89 | |
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90 | /** "x\~xx\~xxx" -> "x~xx~xxx" */ |
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91 | int unquoteTilde(SString &target) |
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92 | { |
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93 | const char* x = target.c_str(); |
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94 | SString tmp; |
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95 | char *f; |
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96 | while (1) |
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97 | { |
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98 | f = strchr((char*)x, '\\'); |
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99 | if (f) |
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100 | { |
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101 | tmp.append(x, f - x); |
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102 | if (f[1] == '~') |
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103 | { |
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104 | tmp += '~'; |
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105 | x = f + 2; |
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106 | } |
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107 | else |
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108 | { |
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109 | tmp += "\\"; |
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110 | x = f + 1; |
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111 | } |
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112 | } |
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113 | else |
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114 | { |
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115 | if (tmp.length() == 0) return 0; // nothing was changed! |
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116 | tmp += x; |
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117 | target = tmp; |
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118 | return 1; |
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119 | } |
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120 | } |
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121 | } |
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122 | |
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123 | ///////////////// |
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124 | |
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125 | bool strContainsOneOf(const char* str, const char* chars) |
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126 | { |
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127 | while (*str) |
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128 | { |
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129 | if (strchr(chars, *str)) return 1; |
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130 | str++; |
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131 | } |
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132 | return 0; |
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133 | } |
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134 | |
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135 | ////////////// |
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136 | |
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137 | bool sstringQuote(SString& target) |
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138 | { |
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139 | const char* x = target.c_str(); |
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140 | bool changed = 0; |
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141 | SString tmp; |
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142 | tmp.reserve(target.length()); |
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143 | while (*x) |
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144 | { |
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145 | switch (*x) |
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146 | { |
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147 | case '\n': tmp += "\\n"; changed = 1; break; |
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148 | case '\r': tmp += "\\r"; changed = 1; break; |
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149 | case '\t': tmp += "\\t"; changed = 1; break; |
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150 | case '\"': tmp += "\\\""; changed = 1; break; |
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151 | case '\\': tmp += "\\\\"; changed = 1; break; |
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152 | default: tmp += *x; |
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153 | } |
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154 | x++; |
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155 | } |
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156 | if (changed) target = tmp; |
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157 | return changed; |
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158 | } |
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159 | |
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160 | SString sstringDelimitAndShorten(const SString &in, int maxlen, bool show_length, const SString& before, const SString& after) |
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161 | { |
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162 | SString out; |
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163 | if (in.length() > maxlen) |
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164 | out = in.substr(0, maxlen / 2) + "..." + in.substr(in.length() - maxlen + maxlen / 2); |
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165 | else |
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166 | { |
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167 | out = in; show_length = false; |
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168 | } |
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169 | sstringQuote(out); |
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170 | out = before + out + after; |
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171 | if (show_length) |
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172 | out += SString::sprintf(" (length %d)", in.length()); |
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173 | return out; |
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174 | } |
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175 | |
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176 | const char* skipQuoteString(const char* txt, const char* limit) |
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177 | { |
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178 | while (*txt) |
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179 | { |
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180 | if (*txt == '\"') return txt; |
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181 | if (*txt == '\\') txt++; |
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182 | txt++; |
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183 | if (txt == limit) break; |
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184 | } |
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185 | return txt; |
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186 | } |
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187 | |
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188 | int sstringUnquote(SString &target) |
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189 | { |
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190 | const char* x = target.c_str(); |
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191 | SString tmp; |
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192 | char *f; |
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193 | while (1) |
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194 | { |
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195 | f = strchr((char*)x, '\\'); |
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196 | if (f) |
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197 | { |
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198 | tmp.append(x, f - x); |
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199 | switch (f[1]) |
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200 | { |
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201 | case 'n': tmp += '\n'; break; |
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202 | case 'r': tmp += '\r'; break; |
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203 | case 't': tmp += '\t'; break; |
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204 | case '\"': tmp += '\"'; break; |
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205 | default: tmp += f[1]; |
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206 | } |
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207 | x = f + 2; |
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208 | } |
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209 | else |
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210 | { |
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211 | if (tmp.length() == 0) return 0; // nothing was changed! |
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212 | tmp += x; |
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213 | target = tmp; |
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214 | return 1; |
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215 | } |
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216 | } |
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217 | } |
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218 | |
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219 | int strFindField(const SString& txt, const SString& name, int &end) |
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220 | { |
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221 | const char* t = txt.c_str(), *n; |
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222 | int pos = 0; |
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223 | while (1) |
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224 | { |
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225 | n = strchr(t + pos, ','); |
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226 | if ((!strncmp(t + pos, name.c_str(), name.length())) && (t[pos + name.length()] == '=')) |
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227 | { |
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228 | if (n) end = n - t; else end = txt.length(); |
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229 | return pos; |
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230 | } |
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231 | if (n) pos = n - t + 1; else break; |
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232 | } |
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233 | return -1; |
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234 | } |
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235 | |
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236 | SString strGetField(const SString& txt, const SString& name) |
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237 | { |
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238 | int p, e; |
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239 | p = strFindField(txt, name, e); |
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240 | if (p < 0) return SString(); |
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241 | p += name.length() + 1; |
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242 | return SString(txt.substr(p, e - p)); |
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243 | } |
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244 | |
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245 | void strSetField(SString& txt, const SString& name, const SString& value) |
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246 | { |
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247 | int p, e; |
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248 | p = strFindField(txt, name, e); |
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249 | if (p < 0) |
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250 | { |
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251 | if (!value.length()) return; |
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252 | char *t = txt.directAppend(1 + name.length() + value.length()); |
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253 | char *b = t; |
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254 | if (txt.length()) *(t++) = ','; |
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255 | strcpy(t, name.c_str()); t += name.length(); |
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256 | *(t++) = '='; |
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257 | strcpy(t, value.c_str()); t += value.length(); |
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258 | txt.endAppend(t - b); |
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259 | } |
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260 | else |
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261 | { |
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262 | if (!value.length()) |
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263 | { |
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264 | if (p > 0) p--; else if (e < txt.length()) e++; |
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265 | char *t = txt.directWrite(0); |
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266 | memmove(t + p, t + e, txt.length() - e); |
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267 | txt.endWrite(txt.length() + value.length() - (e - p)); |
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268 | } |
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269 | else |
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270 | { |
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271 | p += name.length() + 1; |
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272 | char *t = txt.directWrite(txt.length() + value.length() - (e - p)); |
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273 | memmove(t + p + value.length(), t + e, txt.length() - e); |
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274 | memmove(t + p, value.c_str(), value.length()); |
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275 | txt.endWrite(txt.length() + value.length() - (e - p)); |
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276 | } |
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277 | } |
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278 | } |
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279 | |
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280 | SString trim(const SString& s) |
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281 | { |
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282 | const unsigned char*b = (const unsigned char*)s.c_str(); |
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283 | const unsigned char*e = b + s.length(); |
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284 | while ((b < e) && (*b <= ' ')) b++; |
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285 | while ((b < e) && (e[-1] <= ' ')) e--; |
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286 | if ((e - b) == s.length()) return s; |
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287 | SString newstring; |
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288 | char* t = newstring.directWrite(e - b); |
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289 | memmove(t, b, e - b); |
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290 | newstring.endWrite(e - b); |
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291 | return newstring; |
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292 | } |
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293 | |
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294 | SString concatPath(const SString& in1, const SString& in2) |
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295 | { |
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296 | SString out = in1; |
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297 | if (out.length() > 0 && out[out.length() - 1] != PATH_SEPARATOR_CHAR) |
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298 | out += PATH_SEPARATOR_CHAR; |
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299 | out += in2; |
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300 | return out; |
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301 | } |
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302 | |
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303 | bool removeCR(SString& s) |
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304 | { |
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305 | const char* p = s.c_str(); |
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306 | const char* cr = strchr(p, '\r'); |
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307 | if (!cr) return false; |
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308 | char* begin = s.directWrite(); |
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309 | char* src = begin + (cr - p), *dst = src; |
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310 | while (*src) |
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311 | if (*src == '\r') |
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312 | src++; |
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313 | else |
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314 | *(dst++) = *(src++); |
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315 | s.endWrite(dst - begin); |
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316 | return true; |
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317 | } |
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318 | |
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319 | bool matchWildcard(const SString& word, const SString& pattern) |
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320 | { |
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321 | if (pattern.length() == 0) |
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322 | return word.length() == 0; |
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323 | int aster = pattern.indexOf('*'); |
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324 | if (aster >= 0) |
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325 | { |
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326 | SString before = pattern.substr(0, aster); |
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327 | SString after = pattern.substr(aster + 1); |
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328 | if (!word.length()) return false; |
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329 | if (before.length()) if (!word.startsWith(before.c_str())) return false; |
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330 | if (after.length()) |
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331 | if ((word.length() < after.length()) |
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332 | || (strcmp(after.c_str(), word.c_str() + word.length() - after.length()))) |
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333 | return false; |
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334 | return true; |
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335 | } |
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336 | else |
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337 | return word == pattern; |
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338 | } |
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339 | |
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340 | bool matchWildcardList(const SString& word, const SString& patterns) |
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341 | { |
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342 | if (patterns.length() == 0) |
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343 | return word.length() == 0; |
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344 | int pos = 0; |
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345 | SString pattern; |
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346 | while (patterns.getNextToken(pos, pattern, ',')) |
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347 | if (matchWildcard(word, pattern)) |
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348 | return true; |
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349 | return false; |
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350 | } |
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351 | |
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352 | SString getUIDString(uint64_t uid, char prefix) |
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353 | { |
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354 | return SString::sprintf("%c" UINT64_FORMAT, prefix, uid); |
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355 | } |
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356 | |
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357 | bool parseUIDString(const char* str, char prefix, uint64_t &uid, bool err) |
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358 | { |
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359 | if ((str[0] == prefix) && (isdigit(str[1]))) |
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360 | { |
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361 | char* end; |
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362 | uid = strtoull(str + 1, &end, 10); |
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363 | if (end == (str + 1 + strlen(str + 1))) |
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364 | return true; |
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365 | } |
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366 | if (err) |
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367 | logPrintf("SString", "parseUIDString", LOG_ERROR, "Invalid uid: '%s'", str); |
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368 | return false; |
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369 | } |
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370 | |
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371 | bool sstringURLEncode(SString& target) |
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372 | { |
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373 | const char* x = target.c_str(); |
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374 | bool changed = 0; |
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375 | SString tmp; |
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376 | tmp.reserve(target.length()); |
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377 | static constexpr const char* ALLOWED_CHARS = "-_.~"; |
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378 | for (; *x; x++) |
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379 | { |
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380 | if (!(isalnum(*x) || strchr(ALLOWED_CHARS, *x))) |
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381 | { |
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382 | tmp += "%"; |
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383 | tmp += SString::sprintf("%02x", *x); |
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384 | changed = 1; |
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385 | } |
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386 | else |
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387 | tmp += *x; |
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388 | } |
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389 | if (changed) target = tmp; |
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390 | return changed; |
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391 | } |
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392 | |
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393 | bool sstringURLDecode(SString &target) |
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394 | { |
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395 | const char* x = target.c_str(); |
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396 | SString tmp; |
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397 | char *f; |
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398 | while (1) |
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399 | { |
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400 | f = strchr((char*)x, '%'); |
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401 | if (f) |
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402 | { |
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403 | tmp.append(x, f - x); |
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404 | char hex[3] = { f[1],f[2],0 }; |
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405 | char* after; |
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406 | unsigned long intvalue = strtoul(hex, &after, 16); |
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407 | tmp += (char)intvalue; |
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408 | x = f + 3; |
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409 | } |
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410 | else |
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411 | { |
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412 | if (tmp.length() == 0) return false; // nothing was changed! |
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413 | tmp += x; |
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414 | target = tmp; |
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415 | return true; |
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416 | } |
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417 | } |
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418 | } |
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419 | |
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420 | static span<char> findEof(span<char> field, const char* pos) // 'eof' includes any number of leading '\'s and is only detected when there is nothing else in the line |
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421 | { |
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422 | const char* eof = strstr(pos, "eof"); |
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423 | if (!eof) |
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424 | return span<char>(); |
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425 | |
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426 | if (!(((eof + 3) == field.end()) || (eof[3] == '\n'))) |
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427 | return span<char>(); |
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428 | |
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429 | const char* begin = eof - 1; |
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430 | for (; begin >= field.begin(); begin--) |
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431 | { |
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432 | if (*begin == '\n') |
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433 | break; |
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434 | if (*begin != '\\') |
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435 | return span<char>(); |
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436 | } |
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437 | |
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438 | return span<char>((char*)(begin + 1), (eof + 3) - (begin + 1)); |
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439 | } |
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440 | |
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441 | bool sstringQuoteEOF(SString& target) |
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442 | { |
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443 | span<char> field((char*)target.c_str(), target.size()); |
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444 | const char* pos = field.begin(); |
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445 | |
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446 | bool changed = false; |
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447 | |
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448 | SString tmp; |
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449 | |
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450 | while (true) |
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451 | { |
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452 | auto eof = findEof(field, pos); |
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453 | if (eof.size()) |
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454 | { |
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455 | if (!changed) |
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456 | { |
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457 | tmp.reserve(target.length() + 10); |
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458 | changed = true; |
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459 | } |
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460 | tmp.append(pos, eof.begin() - pos); |
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461 | tmp += "\\"; |
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462 | tmp.append(eof.begin(), (int)eof.size()); |
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463 | pos = eof.end(); |
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464 | } |
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465 | else |
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466 | { |
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467 | if (!changed) |
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468 | return false; |
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469 | tmp.append(pos, field.end() - pos); |
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470 | break; |
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471 | } |
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472 | } |
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473 | |
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474 | target = tmp; |
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475 | return true; |
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476 | } |
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477 | |
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478 | bool sstringUnquoteEOF(SString& target) |
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479 | { |
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480 | span<char> field((char*)target.c_str(), target.size()); |
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481 | const char* pos = field.begin(); |
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482 | |
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483 | bool changed = false; |
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484 | |
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485 | SString tmp; |
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486 | |
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487 | while (true) |
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488 | { |
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489 | auto eof = findEof(field, pos); |
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490 | if (eof.size() > 3) |
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491 | { |
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492 | if (!changed) |
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493 | { |
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494 | tmp.reserve(target.length()); |
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495 | changed = true; |
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496 | } |
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497 | tmp.append(pos, eof.begin() - pos); |
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498 | tmp.append(eof.begin() + 1, (int)eof.size() - 1); |
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499 | pos = eof.end(); |
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500 | } |
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501 | else |
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502 | { |
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503 | if (eof.size() == 3) //size()==3 means bare 'eof', which cannot be unquoted (and means something went wrong somewhere else) |
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504 | logPrintf("String", "unquoteEof", LOG_WARN, "Unexpected bare \"eof\" line"); |
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505 | if (!changed) |
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506 | return false; |
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507 | tmp.append(pos, field.end() - pos); |
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508 | break; |
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509 | } |
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510 | } |
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511 | |
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512 | target = tmp; |
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513 | return true; |
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514 | } |
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