process_html_file.sh


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#!/bin/sh

# Copyright (C) 2021 Wojtek Kosior
# Redistribution terms are gathered in the `copyright' file.

# Call like:
#     ./process_html_file.sh html/options.html

. ./shell_utils.sh

FILE="$1"
FILEKEY=$(sanitize "$FILE")

if [ "x$(map_get HTML_FILENAMES $FILEKEY)" = "xyes" ]; then
    printf 'import loop on %s\n' "$FILE" >&2
    exit 1
fi

map_set_export HTML_FILENAMES $FILEKEY yes

awk '\
!/^[\t\r ]*<IMPORT[\t\r ]+([^\t\r ]+)[\t\r ]+\/>[\t\r ]*$/{
	print $0;
}
/^[\t\r ]*<IMPORT[\t\r ]+([^\t\r ]+)[\t\r ]+\/>[\t\r ]*$/{
    indent = substr($0, 1, index($0, "<") - 1);
    command = "./process_html_file.sh " $2;
    while (command | getline) {
        print indent $0;
    }
    if (close(command) != 0)
        exit 1;
}' < "$FILE"