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60 lines
2.2 KiB
60 lines
2.2 KiB
2 years ago
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#!/usr/bin/env bash
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# This script is used to generate a gconv-modules file that takes into
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# account only the gconv modules installed by Buildroot. It receives
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# on its standard input the original complete gconv-modules file from
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# the toolchain, and as arguments the list of gconv modules that were
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# actually installed, and writes on its standard output the new
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# gconv-modules file.
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# The format of gconv-modules is precisely documented in the
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# file itself. It consists of two different directives:
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# module FROMSET TOSET FILENAME COST
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# alias ALIAS REALNAME
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# and that's what this script parses and generates.
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#
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# There are two kinds of 'module' directives:
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# - the first defines conversion of a charset to/from INTERNAL representation
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# - the second defines conversion of a charset to/from another charset
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# we handle each with slightly different code, since the second never has
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# associated aliases.
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gawk -v files="${1}" '
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$1 == "alias" {
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aliases[$3] = aliases[$3] " " $2;
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}
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$1 == "module" && $2 != "INTERNAL" && $3 == "INTERNAL" {
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file2internals[$4] = file2internals[$4] " " $2;
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mod2cost[$2] = $5;
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}
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$1 == "module" && $2 != "INTERNAL" && $3 != "INTERNAL" {
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file2cset[$4] = file2cset[$4] " " $2 ":" $3;
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mod2cost[$2] = $5;
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}
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END {
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nb_files = split(files, all_files);
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for(f = 1; f <= nb_files; f++) {
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file = all_files[f];
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printf("# Modules and aliases for: %s\n", file);
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nb_mods = split(file2internals[file], mods);
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for(i = 1; i <= nb_mods; i++) {
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nb_aliases = split(aliases[mods[i]], mod_aliases);
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for(j = 1; j <= nb_aliases; j++) {
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printf("alias\t%s\t%s\n", mod_aliases[j], mods[i]);
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}
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printf("module\t%s\t%s\t%s\t%d\n", mods[i], "INTERNAL", file, mod2cost[mods[i]]);
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printf("module\t%s\t%s\t%s\t%d\n", "INTERNAL", mods[i], file, mod2cost[mods[i]]);
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printf("\n" );
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}
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printf("%s", nb_mods != 0 ? "\n" : "");
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nb_csets = split(file2cset[file], csets);
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for(i = 1; i <= nb_csets; i++) {
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split(csets[i], cs, ":");
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printf("module\t%s\t%s\t%s\t%d\n", cs[1], cs[2], file, mod2cost[cs[1]]);
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}
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printf("%s", nb_csets != 0 ? "\n\n" : "");
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}
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}
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'
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