| 1 | # # vim:filetype=sh: |
| 2 | # .bashrc with functions for non- and interactive and login shells |
| 3 | # current functions are only adding/inserting to $env, and PATH, etc. |
| 4 | # construction |
| 5 | |
| 6 | ## doc: check if executable exists |
| 7 | _exists() |
| 8 | { |
| 9 | [ -n "$1" ] && type -P "$1" &> /dev/null |
| 10 | } |
| 11 | |
| 12 | ## doc: check if $DISPLAY isn't pointing to a remote server |
| 13 | _check_if_remote_display() |
| 14 | { |
| 15 | local d="${DISPLAY%.[0-9]*}" |
| 16 | local hn="${HOSTNAME%%.*}" |
| 17 | |
| 18 | if [ -n "${d##:*}" ]; then |
| 19 | ## hostname set |
| 20 | |
| 21 | if [ -z "${d##/*}" ]; then |
| 22 | ## unix socket |
| 23 | return 0 |
| 24 | fi |
| 25 | |
| 26 | if [ -n "${d##localhost*}" ] && |
| 27 | [ -n "${d##$hn*}" ]; then |
| 28 | ## not set to localhost or $hostname |
| 29 | return 1 |
| 30 | fi |
| 31 | fi |
| 32 | |
| 33 | ## localhost, but probably tunneled |
| 34 | if [ "${d##*:}" -ge 10 ]; then |
| 35 | return 1 |
| 36 | fi |
| 37 | |
| 38 | ## ok |
| 39 | return 0 |
| 40 | } |
| 41 | |
| 42 | ## doc: convert text (xh ym zs) to seconds |
| 43 | _str2time() |
| 44 | { |
| 45 | echo $(($(echo " $*" | sed -e 's/s/ * 1 +/g' -e 's/m/ * 60 +/g' \ |
| 46 | -e 's/h/ * 3600 +/g') + 0)) |
| 47 | } |
| 48 | |
| 49 | ## doc: check if program/pid exists |
| 50 | running() |
| 51 | { |
| 52 | kill -0 $* &> /dev/null |
| 53 | } |
| 54 | |
| 55 | ## doc: repeat n.m ...: repeat execution n times (in m intervals) |
| 56 | repeat() { |
| 57 | local n t c |
| 58 | n="$1" |
| 59 | shift |
| 60 | |
| 61 | if [ -z "${n##*.*}" ]; then |
| 62 | t=$(_str2time ${n##*.}) |
| 63 | n="${n%%.*}" |
| 64 | else |
| 65 | t=0 |
| 66 | fi |
| 67 | |
| 68 | while [ -z "$n" ] || [ "$((n--))" -gt 0 ]; do |
| 69 | "$@" |
| 70 | sleep $t |
| 71 | done |
| 72 | } |
| 73 | |
| 74 | ## doc: retry ...: execute command, and re-execute until it succeeds |
| 75 | retry() { |
| 76 | local cmd="$1" |
| 77 | shift |
| 78 | |
| 79 | if [ -z "$cmd" ]; then |
| 80 | echo "retry cmd [args]" 1>&2 |
| 81 | return 1 |
| 82 | fi |
| 83 | |
| 84 | if ! type "$cmd" &> /dev/null; then |
| 85 | echo "can't find command $cmd" 1>&2 |
| 86 | return 1 |
| 87 | fi |
| 88 | |
| 89 | while ! "$cmd" "$@"; do |
| 90 | sleep 1; |
| 91 | done |
| 92 | } |
| 93 | |
| 94 | ## doc: define $I_ARCH, $I_PREFIX_NOARCH, $I_PREFIX_ARCH depending on machine |
| 95 | getarch() |
| 96 | { |
| 97 | local arch u |
| 98 | |
| 99 | ## don't redo |
| 100 | [ -z "$I_ARCH" ] || return 0 |
| 101 | |
| 102 | for u in -m -i -p; do |
| 103 | arch=$(uname $u 2>/dev/null) |
| 104 | [ -n "$arch" ] && [ "$arch" != unknown ] && break |
| 105 | done |
| 106 | |
| 107 | unset I_ARCH_EXTRA |
| 108 | |
| 109 | case "$arch" in |
| 110 | i[3456]86) |
| 111 | arch=i386 |
| 112 | ;; |
| 113 | x86_64) |
| 114 | export I_ARCH_EXTRA=i386 |
| 115 | ;; |
| 116 | ?ower*64|ppc64) |
| 117 | arch=ppc64 |
| 118 | export I_ARCH_EXTRA=ppc |
| 119 | ;; |
| 120 | ?ower*|ppc) |
| 121 | arch=ppc |
| 122 | ;; |
| 123 | esac |
| 124 | export I_ARCH=$arch I_PREFIX_NOARCH=$HOME/opt/noarch \ |
| 125 | I_PREFIX_ARCH=$HOME/opt/$arch |
| 126 | } |
| 127 | |
| 128 | |
| 129 | ## doc: rescan opt dir and define paths |
| 130 | repath() |
| 131 | { |
| 132 | envappend PATH /usr/local/bin /usr/bin /bin |
| 133 | envappend PATH /usr/local/sbin /usr/sbin /sbin |
| 134 | [ -n "$PATH_LOCAL" ] && envinsert PATH "${PATH_LOCAL[@]}" |
| 135 | |
| 136 | getarch |
| 137 | addarch noarch $I_ARCH_EXTRA $I_ARCH |
| 138 | |
| 139 | addjava /usr/java/{default,latest,jdk,jre}* |
| 140 | } |
| 141 | |
| 142 | ## environment support functions |
| 143 | envisin() |
| 144 | { |
| 145 | local str |
| 146 | str=":$1:" |
| 147 | [ -z "${str%%*:$2:*}" ] |
| 148 | } |
| 149 | |
| 150 | envput() |
| 151 | { |
| 152 | local env check new where old sep arg |
| 153 | |
| 154 | # args |
| 155 | where="$1" |
| 156 | env="$2" |
| 157 | shift 2 |
| 158 | |
| 159 | new="" |
| 160 | old=":${!env}:" |
| 161 | for arg; do |
| 162 | [ -d "$arg" ] || continue |
| 163 | ## remove from old |
| 164 | old="${old//:$arg:/:}" |
| 165 | ## add to new, if not yet in new |
| 166 | envisin "$new" "$arg" || new="${new:+$new:}$arg" |
| 167 | done |
| 168 | #until [ "${old/#:}" = "$old" ]; do old="${old/#:}"; done |
| 169 | #until [ "${old/%:}" = "$old" ]; do old="${old/%:}"; done |
| 170 | if [ -n "$new" ]; then |
| 171 | old="${old/#:}" |
| 172 | old="${old/%:}" |
| 173 | if [ "$where" = after ]; then |
| 174 | eval "$env"="${old:+$old:}$new" |
| 175 | else |
| 176 | eval "$env"="$new${old:+:$old}" |
| 177 | fi |
| 178 | export $env |
| 179 | fi |
| 180 | } |
| 181 | |
| 182 | ## doc: insert path in environment variable |
| 183 | envinsert() |
| 184 | { |
| 185 | envput before "$@" |
| 186 | } |
| 187 | |
| 188 | ## doc: append path to environment variable |
| 189 | envappend() |
| 190 | { |
| 191 | envput after "$@" |
| 192 | } |
| 193 | |
| 194 | ## scan architecture-dependent opt dir |
| 195 | addarch() |
| 196 | { |
| 197 | local arch dir |
| 198 | for arch; do |
| 199 | [ -d "$HOME/opt/$arch" ] || continue |
| 200 | for dir in $HOME/opt/$arch/*; do |
| 201 | [ -d "$dir" ] || continue |
| 202 | [ -e "$dir/.noauto" ] && continue |
| 203 | |
| 204 | envinsert PATH "$dir"/{bin,sbin} |
| 205 | envinsert PERL5LIB "$dir"/{share,lib{64,}}/perl5{/site_perl,} |
| 206 | envinsert CPATH "$dir"/include |
| 207 | envinsert LD_LIBRARY_PATH "$dir"/lib{64,} |
| 208 | envinsert LIBRARY_PATH "$dir"/lib{64,} |
| 209 | envinsert PKG_CONFIG_PATH "$dir"/lib{64,}/pkgconfig |
| 210 | envinsert PYTHONPATH "$dir"/lib{64,}/python* \ |
| 211 | "$dir"/lib{64,}/python*/site-packages |
| 212 | done |
| 213 | done |
| 214 | export PATH |
| 215 | } |
| 216 | |
| 217 | ## search for java |
| 218 | addjava() |
| 219 | { |
| 220 | local dir javac java |
| 221 | |
| 222 | javac="" |
| 223 | java="" |
| 224 | |
| 225 | for dir; do |
| 226 | if [ -e "$dir"/bin/javac -a -z "$javac" ]; then |
| 227 | javac="$dir" |
| 228 | fi |
| 229 | if [ -e "$dir"/bin/java -a -z "$java" ]; then |
| 230 | java="$dir" |
| 231 | fi |
| 232 | done |
| 233 | if [ -n "$javac" ]; then |
| 234 | export JAVA_HOME="$javac" |
| 235 | envinsert PATH "$javac/bin" |
| 236 | elif [ -n "$java" ]; then |
| 237 | export JAVA_HOME="$java" |
| 238 | envinsert PATH "$java/bin" |
| 239 | fi |
| 240 | } |
| 241 | |
