| #!/usr/bin/env bash |
| |
| # This script is used to generate a gconv-modules file that takes into |
| # account only the gconv modules installed by Buildroot, and generates |
| # a stripped-down gconv-moduels file on its stdout. |
| # It takes two arguments: |
| # $1: the directory where to look for gconv modules definitions |
| # $2: a space-separated list of gconv modules that were actually |
| # installed |
| |
| # Starting with glibc-2.34, modules definitions are located in multiple |
| # files: |
| # ${1}/gconv-modules |
| # ${1}/gconv-modules.d/*.conf |
| |
| # The format of gconv-modules is precisely documented in the |
| # file itself. It consists of two different directives: |
| # module FROMSET TOSET FILENAME COST |
| # alias ALIAS REALNAME |
| # and that's what this script parses and generates. |
| # |
| # There are two kinds of 'module' directives: |
| # - the first defines conversion of a charset to/from INTERNAL representation |
| # - the second defines conversion of a charset to/from another charset |
| # we handle each with slightly different code, since the second never has |
| # associated aliases. |
| |
| for f in ${1}/gconv-modules ${1}/gconv-modules.d/*.conf; do |
| [ -e "${f}" ] || continue |
| cat "${f}" |
| done \ |
| |awk -v files="${2}" ' |
| $1 == "alias" { |
| aliases[$3] = aliases[$3] " " $2; |
| } |
| $1 == "module" && $2 != "INTERNAL" && $3 == "INTERNAL" { |
| file2internals[$4] = file2internals[$4] " " $2; |
| mod2cost[$2] = $5; |
| } |
| $1 == "module" && $2 != "INTERNAL" && $3 != "INTERNAL" { |
| file2cset[$4] = file2cset[$4] " " $2 ":" $3; |
| mod2cost[$2] = $5; |
| } |
| |
| END { |
| nb_files = split(files, all_files); |
| for(f = 1; f <= nb_files; f++) { |
| file = all_files[f]; |
| printf("# Modules and aliases for: %s\n", file); |
| nb_mods = split(file2internals[file], mods); |
| for(i = 1; i <= nb_mods; i++) { |
| nb_aliases = split(aliases[mods[i]], mod_aliases); |
| for(j = 1; j <= nb_aliases; j++) { |
| printf("alias\t%s\t%s\n", mod_aliases[j], mods[i]); |
| } |
| printf("module\t%s\t%s\t%s\t%d\n", mods[i], "INTERNAL", file, mod2cost[mods[i]]); |
| printf("module\t%s\t%s\t%s\t%d\n", "INTERNAL", mods[i], file, mod2cost[mods[i]]); |
| printf("\n" ); |
| } |
| printf("%s", nb_mods != 0 ? "\n" : ""); |
| nb_csets = split(file2cset[file], csets); |
| for(i = 1; i <= nb_csets; i++) { |
| split(csets[i], cs, ":"); |
| printf("module\t%s\t%s\t%s\t%d\n", cs[1], cs[2], file, mod2cost[cs[1]]); |
| } |
| printf("%s", nb_csets != 0 ? "\n\n" : ""); |
| } |
| } |
| ' |