gopher.sh: use single URI parameter

[gofetch.git] / gopher.sh

diff --git a/gopher.sh b/gopher.sh
index a6cc44d7058aa659fe0fbeec1eb73a259c933333..3dee0f913f5391a4aa496be958d0974afce82b09 100755 (executable)
--- a/gopher.sh
+++ b/gopher.sh
@@ -1,14 +1,22 @@
 #!/bin/sh
 
-# $0 [server] ([selector]) ([port]) ([mode])
-#      server: the gopher server to dig to
-#      selector: the gopher selector (default is empty)
-#      port: the port to use (default is 70)
-#      mode: the filetype mode (default depends upon selector)
-#              0: plain text
-#              1: menu (dir-like)
-#              ...
-#              download: fake mode to download the result without changes
+# $0 [gopher uri] ([mode])
+#      uri: the gopher URI to dig to, e.g.:
+#              - gopher://sdf.org:70/1/faq
+#              - sdf.org/faq
+#              - sdf.org/1/faq
+#              - http://gopher.nikiroo.be:80/news
+#              - ...
+#              default port is 70 for gopher, 80 for http, 443 for https
+#              default filetype depends upon selector:
+#              - 0: plain text
+#              - 1: menu (dir-like)
+#              - ...
+#              - download: fake mode to download the result without changes
+
+# Manual:
+#      When asked for a number (non-dialog uses only), you can also
+#      enter 'n' or 'p' to get the next or previous item (+1 or -1)
 
 # ENV variables:
 #      USE_DIALOG: force the usage of the command 'dialog'
@@ -31,29 +39,43 @@
 #        3: unknown selector mode
 #      255: special exit more 'q'
 
-SERVER="$1"
-SELECTOR="$2"
-PORT="$3"
-MODE="$4"
+URI="$1"
 
 PREFIX="[0-9hIg+]"
 
+PROTOCOL="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\1|g'`"
+SERVER="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\2|g'`"
+PORT="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\3|g'`"
+SELECTOR="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\4|g'`"
+MODE=
+
+PORT="`echo "$PORT" | sed 's/^://'`"
+
 # Defaults:
-[ "$PORT" = "" ] && PORT=70
+if [ "$PORT" = "" ];then
+       if [ "$PROTOCOL" = http ]; then
+               PORT=80
+       elif [ "$PROTOCOL" = https ]; then
+               PORT=443
+       else
+               PORT=70
+       fi
+fi
+
 if [ "$MODE" = "" ]; then
        # "" or dir-like selector? -> 1 ; if not -> 0 
        echo "$SELECTOR" | grep "/$" >/dev/null && MODE=1 || MODE=0
        [ "$SELECTOR" = "" ] && MODE=1
        
        # check explicit modes:
-       if echo "$SELECTOR" | grep "^/\($PREFIX\|download\)/" >/dev/null; then
-               MODE="`echo "$SELECTOR" | cut -f2 -d/`"
-               SELECTOR="`echo "$SELECTOR" | sed 's:^/[^/]*/::'`"
+       if echo "$SELECTOR" | grep "^/\?\($PREFIX\|download\)/" >/dev/null; then
+               MODE="`echo "$SELECTOR" | sed 's:^/\?\([^/]*\)/\(.*\):\1:'`"
+               SELECTOR="`echo "$SELECTOR" | sed 's:^/\?\([^/]*\)/\(.*\):\2:'`"
        fi
 fi
 
 if [ "$SERVER" = "" ]; then
-       echo "Syntax error: $0 [SERVER] ([SELECTOR]) ([PORT]) ([MODE])" >&2
+       echo "Syntax error: $0 [gopher uri]" >&2
        exit 1
 fi
 
@@ -89,7 +111,7 @@ fi
 # Display a gopher menu for the given resource
 cat_menu() {
        i=0
-       cat "$1" | grep "^i\|^$PREFIX" | while read ln; do
+       cat "$1" | grep "^i\|^$PREFIX" | sed 's:\\:\\\\\\\\:g' | while read ln; do
                if echo "$ln" | grep "^i" >/dev/null 2>&1; then
                        if [ "$2" != dialog ]; then
                                echo "$ln" | sed "s:^.\([^\t]*\).*$:    \1:g"
@@ -139,14 +161,24 @@ finish() {
 }
 trap finish EXIT
 
-echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp"
-if [ $? != 0 ]; then
-       echo Cannot contact gopher server "[$SERVER]" >&2
+ok=true
+if [ "$PROTOCOL" = gopher:// -o "$PROTOCOL" = "" ]; then
+       echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp" || ok=false
+else
+       if wget -h >/dev/null 2>&1; then
+               wget "${PROTOCOL}$SERVER:$PORT/$SELECTOR" -O "$tmp" >/dev/null 2>&1
+       else
+               curl "${PROTOCOL}$SERVER:$PORT/$SELECTOR" > "$tmp" 2>/dev/null
+       fi
+fi
+
+if [ $ok = false ]; then
+       echo Cannot contact gopher uri "[$URI]" >&2
        exit 2
 fi
 
 if [ $MODE = 1 ]; then
-       sed --in-place 's:\r::g' "$tmp"
+       sed --in-place 's:\r\n:\n:g;s:\r::g' "$tmp"
 fi
 
 # Process page content
@@ -159,7 +191,7 @@ download)
        cat "$tmp" | less
 ;;
 1|+)
-       CHOICE=start
+       CHOICE=0
        while [ "$CHOICE" != "" ]; do
                if [ "$USE_DIALOG" = 1 ]; then
                        > "$tmp.menu"
@@ -190,7 +222,17 @@ download)
                        rm "$tmp.choice"
                else
                        cat_menu "$tmp" | less
-                       read -p "[$SELECTOR]: " CHOICE
+                       read -p "[$SELECTOR]: " NEW_CHOICE
+                       if [ "$NEW_CHOICE" = p ]; then
+                               CHOICE=`expr "$CHOICE" - 1 2>/dev/null`
+                               if [ "$CHOICE" -lt 0 ]; then
+                                       CHOICE=`cat "$tmp" | grep "^$PREFIX" | wc --lines`
+                               fi
+                       elif [ "$NEW_CHOICE" = n ]; then
+                               CHOICE=`expr "$CHOICE" + 1 2>/dev/null`
+                       else
+                               CHOICE="$NEW_CHOICE"
+                       fi
                fi
                
                [ "$CHOICE" = q ] && exit 255 # force-quit
@@ -200,8 +242,8 @@ download)
                        goto_sel="`getsel "$tmp" $index 2`"
                        goto_port="`getsel "$tmp" $index 4`"
                        goto_mode="`getsel "$tmp" $index 1 | cut -c1`"
-                       echo "Digging to [$goto_server:$goto_port] [$goto_sel]..."
-                       sh "$0" "$goto_server" "$goto_sel" "$goto_port" "$goto_mode"
+                       echo "Digging to [$goto_server:$goto_port] $index [$goto_sel]..."
+                       sh "$0" "$goto_server:$goto_port/$goto_mode/$goto_sel"
                        [ $? = 255 ] && exit 255 # force-quit
                fi
        done