1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | #include "hadoop/StringUtils.hh" |
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19 | #include "hadoop/SerialUtils.hh" |
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20 | |
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21 | #include <errno.h> |
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22 | #include <stdint.h> |
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23 | #include <stdio.h> |
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24 | #include <strings.h> |
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25 | #include <sys/time.h> |
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26 | |
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27 | using std::string; |
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28 | using std::vector; |
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29 | |
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30 | namespace HadoopUtils { |
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31 | |
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32 | string toString(int32_t x) { |
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33 | char str[100]; |
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34 | sprintf(str, "%d", x); |
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35 | return str; |
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36 | } |
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37 | |
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38 | int toInt(const string& val) { |
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39 | int result; |
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40 | char trash; |
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41 | int num = sscanf(val.c_str(), "%d%c", &result, &trash); |
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42 | HADOOP_ASSERT(num == 1, |
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43 | "Problem converting " + val + " to integer."); |
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44 | return result; |
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45 | } |
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46 | |
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47 | float toFloat(const string& val) { |
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48 | float result; |
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49 | char trash; |
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50 | int num = sscanf(val.c_str(), "%f%c", &result, &trash); |
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51 | HADOOP_ASSERT(num == 1, |
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52 | "Problem converting " + val + " to float."); |
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53 | return result; |
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54 | } |
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55 | |
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56 | bool toBool(const string& val) { |
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57 | if (val == "true") { |
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58 | return true; |
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59 | } else if (val == "false") { |
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60 | return false; |
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61 | } else { |
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62 | HADOOP_ASSERT(false, |
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63 | "Problem converting " + val + " to boolean."); |
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64 | } |
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65 | } |
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66 | |
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67 | /** |
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68 | * Get the current time in the number of milliseconds since 1970. |
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69 | */ |
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70 | uint64_t getCurrentMillis() { |
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71 | struct timeval tv; |
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72 | struct timezone tz; |
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73 | int sys = gettimeofday(&tv, &tz); |
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74 | HADOOP_ASSERT(sys != -1, strerror(errno)); |
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75 | return tv.tv_sec * 1000 + tv.tv_usec / 1000; |
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76 | } |
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77 | |
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78 | vector<string> splitString(const std::string& str, |
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79 | const char* separator) { |
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80 | vector<string> result; |
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81 | string::size_type prev_pos=0; |
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82 | string::size_type pos=0; |
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83 | while ((pos = str.find_first_of(separator, prev_pos)) != string::npos) { |
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84 | if (prev_pos < pos) { |
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85 | result.push_back(str.substr(prev_pos, pos-prev_pos)); |
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86 | } |
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87 | prev_pos = pos + 1; |
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88 | } |
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89 | if (prev_pos < str.size()) { |
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90 | result.push_back(str.substr(prev_pos)); |
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91 | } |
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92 | return result; |
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93 | } |
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94 | |
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95 | string quoteString(const string& str, |
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96 | const char* deliminators) { |
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97 | |
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98 | string result(str); |
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99 | for(int i=result.length() -1; i >= 0; --i) { |
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100 | char ch = result[i]; |
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101 | if (!isprint(ch) || |
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102 | ch == '\\' || |
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103 | strchr(deliminators, ch)) { |
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104 | switch (ch) { |
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105 | case '\\': |
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106 | result.replace(i, 1, "\\\\"); |
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107 | break; |
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108 | case '\t': |
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109 | result.replace(i, 1, "\\t"); |
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110 | break; |
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111 | case '\n': |
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112 | result.replace(i, 1, "\\n"); |
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113 | break; |
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114 | case ' ': |
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115 | result.replace(i, 1, "\\s"); |
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116 | break; |
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117 | default: |
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118 | char buff[4]; |
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119 | sprintf(buff, "\\%02x", static_cast<unsigned char>(result[i])); |
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120 | result.replace(i, 1, buff); |
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121 | } |
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122 | } |
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123 | } |
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124 | return result; |
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125 | } |
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126 | |
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127 | string unquoteString(const string& str) { |
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128 | string result(str); |
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129 | string::size_type current = result.find('\\'); |
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130 | while (current != string::npos) { |
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131 | if (current + 1 < result.size()) { |
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132 | char new_ch; |
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133 | int num_chars; |
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134 | if (isxdigit(result[current+1])) { |
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135 | num_chars = 2; |
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136 | HADOOP_ASSERT(current + num_chars < result.size(), |
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137 | "escape pattern \\<hex><hex> is missing second digit in '" |
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138 | + str + "'"); |
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139 | char sub_str[3]; |
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140 | sub_str[0] = result[current+1]; |
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141 | sub_str[1] = result[current+2]; |
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142 | sub_str[2] = '\0'; |
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143 | char* end_ptr = NULL; |
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144 | long int int_val = strtol(sub_str, &end_ptr, 16); |
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145 | HADOOP_ASSERT(*end_ptr == '\0' && int_val >= 0, |
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146 | "escape pattern \\<hex><hex> is broken in '" + str + "'"); |
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147 | new_ch = static_cast<char>(int_val); |
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148 | } else { |
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149 | num_chars = 1; |
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150 | switch(result[current+1]) { |
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151 | case '\\': |
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152 | new_ch = '\\'; |
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153 | break; |
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154 | case 't': |
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155 | new_ch = '\t'; |
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156 | break; |
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157 | case 'n': |
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158 | new_ch = '\n'; |
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159 | break; |
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160 | case 's': |
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161 | new_ch = ' '; |
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162 | break; |
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163 | default: |
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164 | string msg("unknow n escape character '"); |
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165 | msg += result[current+1]; |
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166 | HADOOP_ASSERT(false, msg + "' found in '" + str + "'"); |
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167 | } |
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168 | } |
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169 | result.replace(current, 1 + num_chars, 1, new_ch); |
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170 | current = result.find('\\', current+1); |
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171 | } else { |
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172 | HADOOP_ASSERT(false, "trailing \\ in '" + str + "'"); |
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173 | } |
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174 | } |
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175 | return result; |
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176 | } |
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177 | |
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178 | } |
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