[120] | 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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