git.plutz.net Git - shellwiki/blob - handlers/10_translations.sh

   1 #!/bin/sh
   2
   3 # Set LANGUAGE_DEFAULT to enable Plugin
   4 [ ! "$LANGUAGE_DEFAULT" ] && return 1
   5
   6 export LANGUAGE_DEFAULT="${LANGUAGE_DEFAULT:-en}"
   7 export HTTP_REFERER="${HTTP_REFERER:-$(HEADER Referer)}"
   8 export LANGUAGE ERROR_MSG
   9
  10 mdfile(){
  11   # Override mdfile Selection from tools.sh
  12   local page="$(PATH "$1")"
  13   page="${page%/}"
  14
  15   # Additional part:
  16   #   if PAGE Address is LANGUAGE Page, jump to regular processing
  17   #   else if LANGUAGE Page exists, add language tag
  18   # Also the reason why `mdfile` should not be used in `acl.sh`
  19   if   [ "${page%/:${LANGUAGE}}" != "$page" ]; then
  20     :
  21   elif [ -f "$_DATA/pages/$page/:$LANGUAGE/#page.md"  ]; then
  22     printf %s\\n "$_DATA/pages/$page/:$LANGUAGE/#page.md"
  23     return 0
  24   elif [ -f "$_EXEC/pages/$page/:$LANGUAGE/#page.md"  ]; then
  25     printf %s\\n "$_EXEC/pages/$page/:$LANGUAGE/#page.md"
  26     return 0
  27   fi 2>&-
  28
  29   # Regular processing, keep in sync with tools.sh
  30   if   [ -f "$_DATA/pages/$page/#page.md" ]; then
  31     printf %s\\n "$_DATA/pages/$page/#page.md"
  32     return 0
  33   elif [ -f "$_EXEC/pages/$page/#page.md" ]; then
  34     printf %s\\n "$_EXEC/pages/$page/#page.md"
  35     return 0
  36   else
  37     return 1
  38   fi 2>&-
  39   #  ^^ suppress error messages produced
  40   #     by printf when stdout was closed
  41 }
  42
  43 # UGLY! UGLY! UGLY!
  44 # Override markdown processor from `tools.sh` to add link suffixes
  45 # -> better implement a parser stack, i.e. pipeline markdown + other parser plugins
  46 if [ "$(which awk)" ]; then
  47   md() {
  48     awk -f "$_EXEC/md_macros.awk" -f "$_EXEC/cgilite/markdown.awk" \
  49     | sed -E 's;(<[^>]+ )href="((/[^"/]+|[^"/]+[^:/]|)/([^"/]+/)*)"([^>]*>);\1href="\2:'"${LANGUAGE}"'"\5;g'
  50   }
  51 elif [ "$(which busybox)" ]; then
  52   md() {
  53     busybox awk -f "$_EXEC/md_macros.awk" -f "$_EXEC/cgilite/markdown.awk" \
  54     | sed -E 's;(<[^>]+ )href="((/[^"/]+|[^"/]+[^:/]|)/([^"/]+/)*)"([^>]*>);\1href="\2:'"${LANGUAGE}"'"\5;g'
  55   }
  56 else
  57   md() { cat; }
  58 fi
  59
  60 case ${HTTP_REFERER} in
  61   */:*/*):;;
  62   */:*)
  63    LANGUAGE_REFERRED="${HTTP_REFERER##*/:}"
  64    ;;
  65 esac
  66
  67 LANGUAGE="${LANGUAGE_REFERRED:-${LANGUAGE_DEFAULT}}"
  68
  69 case ${PATH_INFO} in
  70   */:?*/\[attachment\]/?*)
  71     LANGUAGE="${PATH_INFO#*/:}"
  72     LANGUAGE="${LANGUAGE%%/*}"
  73     PATH_INFO="${PATH_INFO%%:?*/*}${PATH_INFO#*/:?*/}"
  74     ;;
  75   */:?*/\[attachment\])
  76     LANGUAGE="${PATH_INFO#*/:}"
  77     LANGUAGE="${LANGUAGE%%/*}"
  78     PATH_INFO="${PATH_INFO%:?*/\[attachment\]}[attachment]"
  79     ;;
  80   */:?*/\[*\])
  81     :;;  # Default handler, considered valid in most cases
  82   */:?*/?*)
  83     :;;  # Default attachment handler
  84   */:?*/)   # Faulty URL build
  85     REDIRECT "${_BASE}${PATH_INFO%/}"
  86     ;;
  87 # */:"${LANGUAGE_DEFAULT}")
  88 #   REDIRECT "${_BASE}${PATH_INFO%:*}"
  89 #   ;;
  90   */:?*)
  91     LANGUAGE="${PATH_INFO##*/:}"
  92
  93     if mdfile "${PATH_INFO}/"; then
  94       # Pretend to deliver Language Page, if Language Tag is valid
  95       PATH_INFO="${PATH_INFO}/"
  96     elif [ "$LANGUAGE" = "$LANGUAGE_DEFAULT" ]; then
  97       # Pretend Language Tag was omitted for default Language
  98       PATH_INFO="${PATH_INFO%:*}"
  99     else
 100       # Deliver default Page if Language is not found
 101       ERROR_MSG="TRANSLATION NOT FOUND"
 102       PATH_INFO="${PATH_INFO%:*}"
 103     fi
 104     ;;
 105   /|*/*/)  # Keep Language from Referer
 106     if [ "$LANGUAGE_REFERRED" -a "$LANGUAGE_REFERRED" != "$LANGUAGE_DEFAULT" ]; then
 107       REDIRECT "${_BASE}${PATH_INFO}:${LANGUAGE_REFERRED}"
 108     fi
 109     ;;
 110   */\[*\])  # Keep Language from Referer
 111     if [ "$LANGUAGE_REFERRED" -a "$LANGUAGE_REFERRED" != "$LANGUAGE_DEFAULT" ]; then
 112       REDIRECT "${_BASE}${PATH_INFO%\[*\]}:${LANGUAGE_REFERRED}/[${PATH_INFO##*/\[}"
 113     fi
 114     ;;
 115 esac
 116
 117 return 1