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Move urlencode/urldecode functions to core lib
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@ -73,3 +73,137 @@ function env_default() {
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env | grep -q "^$1=" && return 0
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export "$1=$2" && return 3
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}
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# Required for $langinfo
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zmodload zsh/langinfo
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# URL-encode a string
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#
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# Encodes a string using RFC 2396 URL-encoding (%-escaped).
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# See: https://www.ietf.org/rfc/rfc2396.txt
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#
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# By default, reserved characters and unreserved "mark" characters are
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# not escaped by this function. This allows the common usage of passing
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# an entire URL in, and encoding just special characters in it, with
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# the expectation that reserved and mark characters are used appropriately.
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# The -r and -m options turn on escaping of the reserved and mark characters,
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# respectively, which allows arbitrary strings to be fully escaped for
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# embedding inside URLs, where reserved characters might be misinterpreted.
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#
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# Prints the encoded string on stdout.
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# Returns nonzero if encoding failed.
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#
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# Usage:
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# omz_urlencode [-r] [-m] <string>
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#
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# -r causes reserved characters (;/?:@&=+$,) to be escaped
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#
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# -m causes "mark" characters (_.!~*''()-) to be escaped
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#
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# -P causes spaces to be encoded as '%20' instead of '+'
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function omz_urlencode() {
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emulate -L zsh
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zparseopts -D -E -a opts r m P
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local in_str=$1
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local url_str=""
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local spaces_as_plus
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if [[ -z $opts[(r)-P] ]]; then spaces_as_plus=1; fi
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local str="$in_str"
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# URLs must use UTF-8 encoding; convert str to UTF-8 if required
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local encoding=$langinfo[CODESET]
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local safe_encodings
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safe_encodings=(UTF-8 utf8 US-ASCII)
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if [[ -z ${safe_encodings[(r)$encoding]} ]]; then
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str=$(echo -E "$str" | iconv -f $encoding -t UTF-8)
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if [[ $? != 0 ]]; then
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echo "Error converting string from $encoding to UTF-8" >&2
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return 1
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fi
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fi
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# Use LC_CTYPE=C to process text byte-by-byte
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local i byte ord LC_ALL=C
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export LC_ALL
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local reserved=';/?:@&=+$,'
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local mark='_.!~*''()-'
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local dont_escape="[A-Za-z0-9"
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if [[ -z $opts[(r)-r] ]]; then
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dont_escape+=$reserved
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fi
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# $mark must be last because of the "-"
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if [[ -z $opts[(r)-m] ]]; then
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dont_escape+=$mark
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fi
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dont_escape+="]"
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# Implemented to use a single printf call and avoid subshells in the loop,
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# for performance (primarily on Windows).
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local url_str=""
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for (( i = 1; i <= ${#str}; ++i )); do
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byte="$str[i]"
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if [[ "$byte" =~ "$dont_escape" ]]; then
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url_str+="$byte"
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else
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if [[ "$byte" == " " && -n $spaces_as_plus ]]; then
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url_str+="+"
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else
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ord=$(( [##16] #byte ))
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url_str+="%$ord"
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fi
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fi
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done
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echo -E "$url_str"
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}
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# URL-decode a string
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#
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# Decodes a RFC 2396 URL-encoded (%-escaped) string.
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# This decodes the '+' and '%' escapes in the input string, and leaves
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# other characters unchanged. Does not enforce that the input is a
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# valid URL-encoded string. This is a convenience to allow callers to
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# pass in a full URL or similar strings and decode them for human
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# presentation.
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#
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# Outputs the encoded string on stdout.
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# Returns nonzero if encoding failed.
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#
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# Usage:
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# omz_urldecode <urlstring> - prints decoded string followed by a newline
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function omz_urldecode {
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emulate -L zsh
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local encoded_url=$1
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echo -e input $1
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# Work bytewise, since URLs escape UTF-8 octets
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local caller_encoding=$langinfo[CODESET]
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local LC_ALL=C
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export LC_ALL
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# Change + back to ' '
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local tmp=${encoded_url:gs/+/ /}
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# Protect other escapes to pass through the printf unchanged
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tmp=${tmp:gs/\\/\\\\/}
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# Handle %-escapes by turning them into `\xXX` printf escapes
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tmp=${tmp:gs/%/\\x/}
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echo -E "before decode $tmp"
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local decoded
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eval "decoded=\$'$tmp'"
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# Now we have a UTF-8 encoded string in the variable. We need to re-encode
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# it if caller is in a non-UTF-8 locale.
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local safe_encodings
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safe_encodings=(UTF-8 utf8 US-ASCII)
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if [[ -z ${safe_encodings[(r)$caller_encoding]} ]]; then
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decoded=$(echo -E "$decoded" | iconv -f UTF-8 -t $caller_encoding)
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if [[ $? != 0 ]]; then
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echo "Error converting string from UTF-8 to $caller_encoding" >&2
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return 1
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fi
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fi
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echo -E "$decoded"
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}
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@ -59,44 +59,13 @@ preexec_functions+=(omz_termsupport_preexec)
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if [[ "$TERM_PROGRAM" == "Apple_Terminal" ]] && [[ -z "$INSIDE_EMACS" ]]; then
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# URL-encodes a string
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# Outputs the encoded string on stdout
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# Returns nonzero if encoding failed
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function _omz_urlencode() {
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local str=$1
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local url_str=""
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# URLs must use UTF-8 encoding; convert if required
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local encoding=${LC_CTYPE/*./}
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if [[ -n $encoding && $encoding != UTF-8 && $encoding != utf8 ]]; then
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str=$(echo $str | iconv -f $encoding -t UTF-8)
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if [[ $? != 0 ]]; then
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echo "Error converting string from $encoding to UTF-8" >&2
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return 1
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fi
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fi
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# Use LC_CTYPE=C to process text byte-by-byte
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local i ch hexch LC_CTYPE=C
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for ((i = 1; i <= ${#str}; ++i)); do
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ch="$str[i]"
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if [[ "$ch" =~ [/._~A-Za-z0-9-] ]]; then
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url_str+="$ch"
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else
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hexch=$(printf "%02X" "'$ch")
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url_str+="%$hexch"
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fi
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done
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echo $url_str
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}
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# Emits the control sequence to notify Terminal.app of the cwd
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function update_terminalapp_cwd() {
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# Identify the directory using a "file:" scheme URL, including
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# the host name to disambiguate local vs. remote paths.
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# Percent-encode the pathname.
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local URL_PATH=$(_omz_urlencode $PWD)
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local URL_PATH=$(omz_urlencode -P $PWD)
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[[ $? != 0 ]] && return 1
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local PWD_URL="file://$HOST$URL_PATH"
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# Undocumented Terminal.app-specific control sequence
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