1 files changed, 300 insertions, 0 deletions
diff --git a/lib_build.sh b/lib_build.sh
new file mode 100755
index 0000000..c808f03
--- /dev/null
+++ b/lib_build.sh
@@ -0,0 +1,300 @@
+#!/bin/sh
+
+# Copyright (C) 2021 Wojtek Kosior
+# Redistribution terms are gathered in the `copyright' file.
+
+. ./shell_utils.sh
+
+handle_export_line() {
+    if [ "x$1" = "xEXPORTS_START" ]; then
+	if [ "$STATE" = "before_block" ]; then
+	    STATE="in_block"
+	fi
+    elif [ "x$1" = "xEXPORT" ]; then
+	if [ "$STATE" != "in_block" ]; then
+	    return
+	fi
+
+	EXPORTCODE="${EXPORTCODE}window.killtheweb.$2 = $2;$ENDL"
+
+	PREVIOUS_FILE="$(map_get EXPORTS $2)"
+	if [ "x$PREVIOUS_FILE" != "x" ]; then
+	    errcho "export $2 present in both $PREVIOUS_FILE and $FILE"
+	    return 1
+	fi
+
+	map_set_instr EXPORTS $2 "$FILE"
+
+    elif [ "x$1" = "xEXPORTS_END" ]; then
+	if [ "$STATE" = "in_block" ]; then
+	    STATE="after_block"
+	fi
+    fi
+}
+
+translate_exports() {
+    STATE="before_block"
+    EXPORTCODE=''
+
+    while read EXPORT_LINE; do
+	handle_export_line $EXPORT_LINE || return 1
+    done
+
+    map_set_instr EXPORTCODES $FILEKEY "$EXPORTCODE"
+}
+
+add_exports() {
+    FILE="$1"
+    FILEKEY="$(sanitize "$FILE")"
+
+    eval "$(grep -o 'EXPORT.\+' "$1" | translate_exports || exit 1)"
+}
+
+handle_import_line() {
+    if [ "x$1" = "xIMPORTS_START" ]; then
+	if [ "$STATE" = "before_block" ]; then
+	    STATE="in_block"
+	fi
+    elif [ "x$1" = "xIMPORT" ]; then
+	if [ "$STATE" != "in_block" ]; then
+	    return
+	fi
+
+	IMPORTCODE="${IMPORTCODE}const $2 = window.killtheweb.$2;$ENDL"
+
+	IMPORTS="$IMPORTS $2"
+
+    elif [ "x$1" = "xIMPORTS_END" ]; then
+	if [ "$STATE" = "in_block" ]; then
+	    STATE="after_block"
+	fi
+    fi
+}
+
+translate_imports() {
+    STATE="before_block"
+    IMPORTCODE=''
+    IMPORTS=''
+
+    while read IMPORT_LINE; do
+	handle_import_line $IMPORT_LINE || return 1
+    done
+
+    map_set_instr IMPORTCODES $FILEKEY "$IMPORTCODE"
+    map_set_instr IMPORTS $FILEKEY "$IMPORTS"
+}
+
+add_imports() {
+    FILE="$1"
+    FILEKEY="$(sanitize "$FILE")"
+
+    eval "$(grep -o 'IMPORT.\+' "$1" | translate_imports || exit 1)"
+}
+
+compute_scripts_list_rec() {
+    local FILE="$1"
+    local FILEKEY=$(sanitize "$1")
+
+    local FILESTATE="$(map_get FILESTATES $FILEKEY)"
+    if [ "xprocessed" = "x$FILESTATE" ]; then
+	return
+    fi
+    if [ "xprocessing" = "x$FILESTATE" ]; then
+	errcho "import loop on $FILE"
+	return 1
+    fi
+
+    USED="$USED $FILEKEY"
+
+    map_set FILESTATES $FILEKEY "processing"
+
+    local IMPORT
+    for IMPORT in $(map_get IMPORTS $FILEKEY); do
+	NEXT_FILE="$(map_get EXPORTS $IMPORT)"
+	if [ "x" = "x$NEXT_FILE" ]; then
+	    errcho "nothing exports $IMPORT, required by $FILE"
+	    return 1
+	fi
+	if ! compute_scripts_list_rec "$NEXT_FILE"; then
+	    errcho "when satisfying $IMPORT for $FILE"
+	    return 1
+	fi
+    done
+
+    [ "x$FILE" = "xexports_init.js" ] || echo $FILE # exports_init.js is hardcoded to load first; the entire export system depends on it
+    map_set FILESTATES $FILEKEY "processed"
+}
+
+compute_scripts_list() {
+    USED=''
+    echo COMPUTED_SCRIPTS=\"exports_init.js
+    compute_scripts_list_rec "$1"
+    echo \"
+
+    for FILEKEY in $USED; do
+	map_set_instr USED $FILEKEY yes
+    done
+}
+
+as_json_list() {
+    while true; do
+	if [ "x" = "x$2" ]; then
+	    echo -n '\\n'"\t\t\"$1\""'\\n\t'
+	    return
+	fi
+	echo -n '\\n'"\t\t\"$1\","
+	shift
+    done
+}
+
+as_html_list() {
+    while [ "x" != "x$1" ]; do
+	echo -n '\\n'"    <script src=\"/$1\"></script>"
+	shift
+    done
+}
+
+main() {
+    # placate importers of these, as they are exported by the yet-to-be-created exports_init.js
+    EXPORTS__browser=exports_init.js
+    EXPORTS__is_chrome=exports_init.js
+    EXPORTS__is_mozilla=exports_init.js
+
+    SCRIPTDIRS='background html common content'
+
+    SCRIPTS=$(find $SCRIPTDIRS -name '[^.#]*.js')
+
+    for SCRIPT in $SCRIPTS; do
+	add_exports $SCRIPT
+	add_imports $SCRIPT
+    done
+
+    eval "$(compute_scripts_list background/main.js || exit 1)"
+    BGSCRIPTS="$(as_json_list $COMPUTED_SCRIPTS)"
+    eval "$(compute_scripts_list content/main.js || exit 1)"
+    CONTENTSCRIPTS="$(as_json_list $COMPUTED_SCRIPTS)"
+    eval "$(compute_scripts_list html/display-panel.js || exit 1)"
+    POPUPSCRIPTS="$(as_html_list $COMPUTED_SCRIPTS)"
+    eval "$(compute_scripts_list html/options_main.js || exit 1)"
+    OPTIONSSCRIPTS="$(as_html_list $COMPUTED_SCRIPTS)"
+
+    rm -rf $BUILDDIR
+    mkdir $BUILDDIR
+    for DIR in $(find $SCRIPTDIRS -type d); do
+	mkdir -p $BUILDDIR/$DIR
+    done
+
+    CHROMIUM_KEY=''
+    GECKO_APPLICATIONS=''
+
+    if [ "$BROWSER" = "chromium" ]; then
+	CHROMIUM_KEY="$(dd if=/dev/urandom bs=32 count=1 2>/dev/null | base64)"
+	CHROMIUM_KEY=$(echo chromium-key-dummy-file-$CHROMIUM_KEY | tr / -)
+	touch $BUILDDIR/$CHROMIUM_KEY
+
+	CHROMIUM_KEY="\n\
+	// WARNING!!!\n\
+	// EACH USER SHOULD REPLACE DUMMY FILE's VALUE WITH A UNIQUE ONE!!!\n\
+	// OTHERWISE, SECURITY CAN BE TRIVIALLY COMPROMISED!\n\
+	// Only relevant to users of chrome-based browsers.\n\
+	// Users of Firefox forks are safe.\n\
+	\"$CHROMIUM_KEY\"\
+"
+    else
+	GECKO_APPLICATIONS="\n\
+    \"applications\": {\n\
+	\"gecko\": {\n\
+	    \"id\": \"{6fe13369-88e9-440f-b837-5012fb3bedec}\",\n\
+	    \"strict_min_version\": \"60.0\"\n\
+	}\n\
+    },"
+    fi
+
+    sed "\
+s^_GECKO_APPLICATIONS_^$GECKO_APPLICATIONS^
+s^_CHROMIUM_KEY_^$CHROMIUM_KEY^
+s^_BGSCRIPTS_^$BGSCRIPTS^
+s^_CONTENTSCRIPTS_^$CONTENTSCRIPTS^" \
+	< manifest.json > $BUILDDIR/manifest.json
+
+    ./process_html_file.sh html/display-panel.html |
+	sed "s^_POPUPSCRIPTS_^$POPUPSCRIPTS^" \
+	    > $BUILDDIR/html/display-panel.html
+
+    ./process_html_file.sh html/options.html |
+	sed "s^_OPTIONSSCRIPTS_^$OPTIONSSCRIPTS^" \
+	    > $BUILDDIR/html/options.html
+
+    for FILE in $SCRIPTS; do
+	FILEKEY=$(sanitize "$FILE")
+	if [ "xyes" != "x$(map_get USED $FILEKEY)" ]; then
+	    errcho "WARNING! $FILE not used"
+	else
+	    (echo "\
+\"use strict\";
+
+({fun: (function() {
+$(map_get IMPORTCODES $FILEKEY)
+
+";
+
+# A hack to insert the contents of default_settings.json at the appropriate location in background/main.js
+if [ "$FILE" = "background/main.js" ]; then
+    # Uses an internal sed expression to escape and indent the JSON file for use in the external sed expression
+    sed 's/^        `DEFAULT SETTINGS`$/'"$(sed -E 's/([\\\&\/])/\\\1/g; s/^/        /; s/$/\\/' < default_settings.json) "/g < "$FILE"
+else
+    cat $FILE
+fi
+
+echo "
+
+$(map_get EXPORTCODES $FILEKEY)
+})}).fun();") > $BUILDDIR/$FILE
+	fi
+    done
+
+    if [ "$BROWSER" = "chromium" ]; then
+	cat > $BUILDDIR/exports_init.js <<EOF
+window.killtheweb={is_chrome: true, browser: window.chrome};
+EOF
+    else
+	cat > $BUILDDIR/exports_init.js <<EOF
+/* Polyfill for IceCat 60. */
+String.prototype.matchAll = String.prototype.matchAll || function(regex) {
+    if (regex.flags.search("g") === -1)
+        throw new TypeError("String.prototype.matchAll called with a non-global RegExp argument");
+
+    for (const matches = [];;) {
+        if (matches[matches.push(regex.exec(this)) - 1] === null)
+	    return matches.splice(0, matches.length - 1);
+    }
+}
+
+window.killtheweb={is_mozilla: true, browser: this.browser};
+EOF
+    fi
+
+    cp -r copyright licenses/ $BUILDDIR
+    cp html/*.css $BUILDDIR/html
+    mkdir $BUILDDIR/icons
+    cp icons/*.png $BUILDDIR/icons
+
+    if [ "$BROWSER" = "chromium" ]; then
+	for MOZILLA_FILE in $(find $BUILDDIR -name "MOZILLA_*"); do
+	    echo > "$MOZILLA_FILE"
+	done
+    fi
+    if [ "$BROWSER" = "mozilla" ]; then
+	for CHROMIUM_FILE in $(find $BUILDDIR -name "CHROMIUM_*"); do
+	    echo > "$CHROMIUM_FILE"
+	done
+    fi
+}
+
+make_zip() (
+    cd "$BUILDDIR"
+    case $BROWSER in
+	mozilla) $ZIP_COMMAND build.zip *;;
+	chromium) exit 92;; # Still to do
+    esac
+)