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1 #! /bin/bash
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2
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3 ########################################################################
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4 #
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5 # File: reg_periodic
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6 # Author: Janis Johnson
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7 # Date: 2002/12/28
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8 #
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9 # Over a range of dates at specified intervals, invoke separate tools to
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10 # update sources, do a build, and run one or more tests.
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11 #
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12 # Define these in a file whose name is the argument to this script:
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13 # LOW_DATE: Date string recognized by the date command.
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14 # HIGH_DATE: Date string recognized by the date command.
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15 # INTERVAL: Time (in seconds) between dates for which to build.
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16 # REG_UPDATE: Pathname of script to update your source tree.
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17 # REG_BUILD: Pathname of script to build enough of the product to run
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18 # the test.
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19 # REG_TEST: Pathname of script to run one or more tests.
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20 # Optional:
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21 # VERBOSITY: Default is 0, to print only errors and final message.
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22 # DATE_IN_MSG If set to anything but 0, include the time and date in
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23 # messages
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24 # REG_STOP Pathname of a file whose existence says to quit; default
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25 # is STOP in the current directory.
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26 #
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27 #
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28 # Copyright (c) 2002, 2003, 2005, 2009 Free Software Foundation, Inc.
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29 #
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30 # This file is free software; you can redistribute it and/or modify
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31 # it under the terms of the GNU General Public License as published by
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32 # the Free Software Foundation; either version 3 of the License, or
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33 # (at your option) any later version.
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34 #
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35 # This program is distributed in the hope that it will be useful,
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36 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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37 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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38 # GNU General Public License for more details.
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39 #
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40 # You should have received a copy of the GNU General Public License
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41 # along with this program; see the file COPYING3. If not see
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42 # <http://www.gnu.org/licenses/>.
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43 #
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44 ########################################################################
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45
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46 ########################################################################
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47 # Functions
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48 ########################################################################
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49
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50 # Issue a message if its verbosity level is high enough.
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51
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52 msg() {
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53 test ${1} -gt ${VERBOSITY} && return
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54
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55 if [ "x${DATE_IN_MSG}" = "x" ]; then
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56 echo "${2}"
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57 else
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58 echo "`${DATE}` ${2}"
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59 fi
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60 }
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61
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62 # Issue an error message and exit with a nonzero status.
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63
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64 error() {
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65 msg 0 "error: ${1}"
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66 exit 1
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67 }
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68
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69 # Turn seconds since the epoch into a date we can use with source
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70 # control tools and report to the user.
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71
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72 make_date() {
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73 MADE_DATE="`${DATE} -u +\"%Y-%m-%d %H:%M %Z\" --date \"1970-01-01 ${1} seconds\"`" \
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74 || error "make_date: date command failed"
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75 }
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76
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77 # Build the components to test using sources as of a particular date and
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78 # run a test case. Pass each of the scripts the date that we're
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79 # testing; the first one needs it, the others can ignore it if they want.
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80
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81 process_date() {
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82 TEST_DATE="${1}"
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83
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84 ${REG_UPDATE} "${TEST_DATE}"
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85 if [ $? -ne 0 ]; then
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86 msg 0 "source update failed for ${TEST_DATE}"
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87 return
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88 fi
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89 ${REG_BUILD} "${TEST_DATE}"
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90 if [ $? -ne 0 ]; then
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91 msg 0 "build failed for ${TEST_DATE}"
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92 return
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93 fi
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94 ${REG_TEST} "${TEST_DATE}"
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95 }
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96
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97 ########################################################################
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98 # Main program (so to speak)
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99 ########################################################################
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100
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101 # If DATE isn't defined, use the default date command; the configuration
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102 # file can override this.
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103
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104 if [ "x${DATE}" = "x" ]; then
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105 DATE=date
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106 fi
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107
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108 # Process the configuration file.
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109
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110 if [ $# -ne 1 ]; then
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111 echo Usage: $0 config_file
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112 exit 1
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113 fi
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114
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115 CONFIG=${1}
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116 if [ ! -f ${CONFIG} ]; then
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117 error "configuration file ${CONFIG} does not exist"
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118 fi
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119
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120 # OK, the config file exists. Source it, make sure required parameters
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121 # are defined and their files exist, and give default values to optional
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122 # parameters.
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123
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124 . ${CONFIG}
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125
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126 test "x${REG_UPDATE}" = "x" && error "REG_UPDATE is not defined"
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127 test "x${REG_BUILD}" = "x" && error "REG_BUILD is not defined"
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128 test "x${REG_TEST}" = "x" && error "REG_TEST is not defined"
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129 test "x${INTERVAL}" = "x" && error "INTERVAL is not defined"
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130 test -x ${REG_TEST} || error "REG_TEST is not an executable file"
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131 test "x${VERBOSITY}" = "x" && VERBOSITY=0
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132 test "x${REG_STOP}" = "x" && REG_STOP="STOP"
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133
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134 msg 2 "LOW_DATE = ${LOW_DATE}"
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135 msg 2 "HIGH_DATE = ${HIGH_DATE}"
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136 msg 2 "INTERVAL = ${INTERVAL}"
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137 msg 2 "REG_UPDATE = ${REG_UPDATE}"
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138 msg 2 "REG_BUILD = ${REG_BUILD}"
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139 msg 2 "REG_TEST = ${REG_TEST}"
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140 msg 2 "VERBOSITY = ${VERBOSITY}"
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141
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142 # Change the dates into seconds since the epoch. This uses an extension
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143 # in GNU date.
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144
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145 LOW_DATE=`${DATE} +%s --date "${LOW_DATE}"` || \
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146 error "date command failed for \"${LOW_DATE}\""
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147 HIGH_DATE=`${DATE} +%s --date "${HIGH_DATE}"` || \
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148 error "date command failed for \"${LOW_DATE}\""
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149
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150 # Process each date in the range.
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151
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152 while [ ${LOW_DATE} -le ${HIGH_DATE} ]; do
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153
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154 # If a file called STOP appears, stop; this allows a clean way to
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155 # interrupt a search.
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156
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157 if [ -f ${REG_STOP} ]; then
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158 msg 0 "STOP file detected"
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159 rm -f ${REG_STOP}
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160 exit 1
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161 fi
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162
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163 # Get a version of the date that is usable by tools and readable
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164 # by people, then process it.
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165
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166 make_date ${LOW_DATE}
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167 process_date "${MADE_DATE}"
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168 let LOW_DATE=LOW_DATE+INTERVAL
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169 done
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170
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171 msg 1 "done"
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