Change some functions to only Bash

1 files changed, 28 insertions, 11 deletions

@@ -9,6 +9,8 @@ PRGN="${0##*/}"
 VRSN=0.1
 # State
 REDIRECTS=0
+# Bash options
+# shopt -s extglob
 
 bollux_usage() {
         cat <<END
@@ -38,7 +40,12 @@ die() {
         exit "$ec"
 }
 
-trim() { sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'; }
+# pure bash bible trim_string
+trim() {
+        : "${1#"${1%%[![:space:]]*}"}"
+        : "${_%"${_##*[![:space:]]}"}"
+        printf '%s\n' "$_"
+}
 
 log() {
         [[ "$BOLLUX_LOGLEVEL" == QUIET ]] && return
@@ -125,19 +132,21 @@ blastoff() { # load a url
                 URL="$(run transform_resource "$BOLLUX_URL" "$1")"
         fi
         [[ "$URL" != *://* ]] && URL="$BOLLUX_PROTO://$URL"
-        URL="$(trim <<<"$URL")"
+        URL="$(trim "$URL")"
 
         server="${URL#*://}"
         server="${server%%/*}"
 
+        log d "URL='$URL' server='$server'"
+
         run request_url "$server" "$BOLLUX_PORT" "$URL" |
                 run handle_response "$URL"
 }
 
 transform_resource() { # transform_resource BASE_URL REFERENCE_URL
         declare -A R B T # reference, base url, target
-        eval "$(parse_url B "$1")"
-        eval "$(parse_url R "$2")"
+        eval "$(run parse_url B "$1")"
+        eval "$(run parse_url R "$2")"
         # A non-strict parser may ignore a scheme in the reference
         # if it is identical to the base URI's scheme.
         if ! "${STRICT:-true}" && [[ "${R[scheme]}" == "${B[scheme]}" ]]; then
@@ -149,7 +158,7 @@ transform_resource() { # transform_resource BASE_URL REFERENCE_URL
                 T[scheme]="${R[scheme]}"
                 isdefined "R[authority]" && T[authority]="${R[authority]}"
                 isdefined R[path] &&
-                        T[path]="$(remove_dot_segments "${R[path]}")"
+                        T[path]="$(run remove_dot_segments "${R[path]}")"
                 isdefined "R[query]" && T[query]="${R[query]}"
         else
                 if isdefined "R[authority]"; then
@@ -239,8 +248,10 @@ remove_dot_segments() { # 5.2.4
 parse_url() { # eval "$(split_url NAME STRING)" => NAME[...]
         local name="$1"
         local string="$2"
+        # shopt -u extglob # TODO port re ^ to extglob syntax
         local re='^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?'
         [[ $string =~ $re ]] || return $?
+        # shopt -s extglob
 
         local scheme="${BASH_REMATCH[2]}"
         local authority="${BASH_REMATCH[4]}"
@@ -250,10 +261,10 @@ parse_url() { # eval "$(split_url NAME STRING)" => NAME[...]
 
         for c in scheme authority query fragment; do
                 [[ "${!c}" ]] &&
-                        printf '%s[%s]=%q\n' "$name" "$c" "${!c}"
+                        run printf '%s[%s]=%q\n' "$name" "$c" "${!c}"
         done
         # unclear if the path is always set even if empty but it looks that way
-        printf '%s[path]=%q\n' "$name" "$path"
+        run printf '%s[path]=%q\n' "$name" "$path"
 }
 
 # is a NAME defined ('set' in bash)?
@@ -289,6 +300,7 @@ handle_response() {
                 REDIRECTS=0
                 BOLLUX_URL="$URL"
                 run prompt "$meta" QUERY
+                # shellcheck disable=2153
                 run blastoff "?$QUERY"
                 ;;
         2*)
@@ -323,10 +335,13 @@ handle_response() {
 display() {
         case "$1" in
         *\;*)
-                mime="$(cut -d\; -f1 <<<"$1" | trim)"
-                charset="$(cut -d\; -f2 <<<"$1" | trim)"
+                mime="${1%;*}"
+                charset="${1#*;}"
+                trim "$mime"
+                trim "$charset"
+                log d "$mime $charset"
                 ;;
-        *) mime="$(trim <<<"$1")" ;;
+        *) mime="$(trim "$1")" ;;
         esac
 
         [[ -z "$mime" ]] && mime="text/gemini"
@@ -384,7 +399,9 @@ mklesskey() {
 }
 
 normalize_crlf() {
-        gawk 'BEGIN{RS="\n\n"}{gsub(/\r\n?/,"\n");print;print ""}'
+        while read -r line; do
+                printf '%s\n' "${line//$'\r'?($'\n')/}"
+        done
 }
 
 typeset_gemini() {