lilalo

annotate l3bashrc @ 76:0da83215839a

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Существенная переработка l3bashrc

* Код полностью структурирован
* Выполняется подмена редакторов с помощью функций
* Выполняется подмена команд. Сейчас только tty
* Устанавливаются переменные окружения L3_* с информацией о сессии
* Добавлена функция l3_fix_prompt восстанавливающая приглашение
LiLaLo со служебной информацией, в том случае, если
оно было модифицировано.
Приглашение остаётся внешне таким же как и до вызова функции,
но в нём теперь скрыта служебная информация LiLaLo
* Приглашение стало цветным. Теперь оно зелёного цвета
author devi
date Mon Feb 13 19:01:19 2006 +0200 (2006-02-13)
parents a10db759e587
children e56f21c44faf
rev   line source
devi@70 1 #!/bin/sh
devi@70 2
devi@70 3
devi@76 4 # Environment variables set by the script:
devi@76 5 #
devi@76 6 # L3_SESSION_ID - uniq id of the LiLaLo-session
devi@76 7 # L3_PARENT_TTY - name of tty on which script is running
devi@76 8 # L3_TTY - current tty
devi@76 9 # PS1 - intercative shell prompt in which LiLaLo hides
devi@76 10 # various information about the command
devi@76 11 # L3_TAMPERED_EDITORS - list of editors which are tampered with functions
devi@76 12
devi@76 13
devi@76 14 # Functions with the names starting _l3_ are internal.
devi@76 15 # Such functions are unset before this rc script exits
devi@76 16
devi@76 17 _l3_editors_to_tamper='/bin/vi /usr/bin/vi /usr/bin/vim /bin/ee /usr/bin/ee /usr/bin/pico /usr/bin/nano /usr/local/bin/vim'
devi@76 18
devi@70 19 _l3_start()
devi@70 20 {
devi@76 21 if _l3_is_not_running_here
devi@76 22 then
devi@76 23 _l3_start_session
devi@76 24 _l3_run_script
devi@76 25 else
devi@76 26 _l3_env
devi@76 27 _l3_init_prompt
devi@76 28 l3_fix_prompt
devi@76 29 _l3_tamper_editors
devi@76 30 _l3_tamper_commands
devi@76 31 _l3_unset_internal
devi@76 32 fi
devi@76 33 }
devi@76 34
devi@76 35 # ===================== STAGE 1 ============================
devi@76 36
devi@76 37 _l3_is_not_running_here()
devi@76 38 {
devi@76 39 export L3_TTY=`/usr/bin/tty`
devi@70 40 proc_on_the_term=`w | grep "${L3_TTY##/dev/}" | awk '{print $8;}'`
devi@70 41 # freeBSD:
devi@70 42 [ -n "$bsd" ] && \
devi@70 43 proc_on_the_term=`w | grep "${L3_TTY##/dev/tty}" | awk '{print $6;}'`
devi@70 44
devi@76 45 [ -n "$proc_on_the_term" ] && echo $proc_on_the_term | grep -qv script
devi@70 46 }
devi@70 47
devi@70 48 _l3_start_session()
devi@70 49 {
devi@71 50 export L3_SESSION_ID=${L3_TTY##*/}-$$
devi@71 51 export L3_HOME=~/.lilalo/
devi@70 52 mkdir -p $L3_HOME
devi@70 53
devi@70 54 uname -a | grep -qi bsd && bsd=yes
devi@70 55 parent=`cat /proc/$PPID/cmdline 2> /dev/null`
devi@70 56 system=`uname -rs`
devi@76 57 login_from=`who | grep "${L3_TTY##/dev/}" | awk '{print $6;}' | tr -d '()'`
devi@70 58 #[ -n "$bsd" ] && login_from="" #FIXME!
devi@70 59 start_time=`date +%s`
devi@70 60 hostname=`hostname -f 2> /dev/null`
devi@70 61 [ -n "$bsd" ] && hostname=`hostname`
devi@70 62
devi@70 63 cat <<INFO > $L3_HOME/$L3_SESSION_ID.info
devi@70 64 <session>
devi@70 65 <local_session_id>$L3_SESSION_ID</local_session_id>
devi@70 66 <hostname>$hostname</hostname>
devi@70 67 <user>$USER</user>
devi@70 68 <uid>$UID</uid>
devi@70 69 <login_from>$login_from</login_from>
devi@76 70 <tty>$L3_TTY</tty>
devi@70 71 <system>$system</system>
devi@70 72 <parent>$parent</parent>
devi@70 73 <ppid>$PPID</ppid>
devi@70 74 <pid>$$</pid>
devi@70 75 <start_time>$start_time</start_time>
devi@76 76 <lang>$LANG</lang>
devi@70 77 </session>
devi@70 78 INFO
devi@70 79
devi@70 80 unset parent system login_from start_time hostname
devi@70 81 }
devi@70 82
devi@70 83 _l3_run_script()
devi@70 84 {
devi@70 85 uname -a | grep -qi bsd && bsd=yes
devi@70 86 flush="-f" #linux
devi@70 87 [ -n "$bsd" ] && flush="-t 0" #freebsd
devi@76 88 export L3_PARENT_TTY=`/usr/bin/tty`
devi@70 89 exec script $flush -q $L3_HOME/${L3_SESSION_ID}.script
devi@70 90 }
devi@70 91
devi@76 92 # ===================== STAGE 2 ============================
devi@76 93
devi@76 94 _l3_env()
devi@76 95 {
devi@76 96 trap l3_close_session 2
devi@76 97 trap l3_close_session EXIT
devi@76 98 true
devi@76 99 }
devi@76 100
devi@76 101 l3_close_session()
devi@70 102 {
devi@71 103 (
devi@71 104 echo '<history>'
devi@71 105 history | sed 's/&/\&amp;/; s/</\&lt;/g; s/>/\&gt;/g'
devi@71 106 echo '</history>'
devi@71 107 ) >> $L3_HOME/$L3_SESSION_ID.info
devi@70 108 }
devi@70 109
devi@76 110 _l3_init_prompt()
devi@76 111 {
devi@76 112 PS1='[\u@\h:\W]\$ '
devi@76 113 PS1='\[\033[0;32m\]'$PS1'\[\033[0m\]'
devi@76 114 export PS1
devi@76 115 }
devi@76 116
devi@76 117 l3_fix_prompt()
devi@76 118 {
devi@76 119 export PS1='\[v2#\!#$?#$UID#$$#$(/bin/date +%s)#$PWD#\033[1024D\033[K\]'$PS1
devi@76 120 }
devi@76 121
devi@76 122 _l3_tamper_editors()
devi@76 123 {
devi@76 124 for editor_file in $_l3_editors_to_tamper
devi@76 125 do
devi@76 126 [ -x $editor_file ] || continue
devi@76 127 editor_name=${editor_file##*/}
devi@76 128 eval "
devi@76 129 $editor_name() {
devi@76 130 if [ -d \"\$1\" ]
devi@76 131 then
devi@76 132 $editor_file \"\$1\"
devi@76 133 return \$?
devi@76 134 else
devi@76 135 TIME=\"\`date +%s\`\"
devi@76 136 DIR=\"\"
devi@76 137 [ \"\${1#/}\" = \"\$1\" ] && DIR=\"\$PWD/\"
devi@76 138 DIFFNAME=\"\$PPID_\${TIME}_\`echo \$DIR\$1| /bin/sed s@_@__@ | /bin/sed 's@/@_@g'\`.diff\"
devi@76 139 old_file=\"/tmp/l3-saved-\$\$.\$RANDOM.\$RANDOM\"
devi@76 140 /bin/cp -- \"\$1\" \"\$old_file\" 2> /dev/null
devi@76 141 $editor_file \"\$@\" || ERR=\$?
devi@76 142 [ -e \"\$old_file\" ] && diff \"\$old_file\" \"\$1\" > \"\$L3_HOME/\$DIFFNAME\" 2> /dev/null \
devi@76 143 || diff /dev/null \"\$1\" > \"\$L3_HOME/\$DIFFNAME\" 2> /dev/null
devi@76 144 /bin/rm \"\$old_file\" 2> /dev/null
devi@76 145 return \$ERR
devi@76 146 fi
devi@76 147 }
devi@76 148 "
devi@76 149 L3_TAMPERED_EDITORS="$L3_TAMPERED_EDITORS $editor_name"
devi@76 150 done
devi@76 151 [ -n "$L3_TAMPERED_EDITORS" ] && export L3_TAMPERED_EDITORS
devi@76 152 }
devi@76 153
devi@76 154 _l3_tamper_commands()
devi@76 155 {
devi@76 156 tty()
devi@76 157 {
devi@76 158 [ -n "$L3_PARENT_TTY" ] && echo $L3_PARENT_TTY || /usr/bin/tty
devi@76 159 }
devi@76 160 }
devi@76 161
devi@76 162 _l3_unset_internal()
devi@76 163 {
devi@76 164 unset `set | grep '^_l3_.*()' | sed 's/()//'`
devi@76 165 unset `set | grep '^_l3_.*=' | sed 's/=.*//'`
devi@76 166 }