Commit | Line | Data |
---|---|---|
0eb21b21 NR |
1 | #!/bin/sh |
2 | ||
a8e347c7 NR |
3 | # $0 [gopher uri] ([mode]) |
4 | # uri: the gopher URI to dig to, e.g.: | |
5 | # - gopher://sdf.org:70/1/faq | |
6 | # - sdf.org/faq | |
7 | # - sdf.org/1/faq | |
8 | # - http://gopher.nikiroo.be:80/news | |
9 | # - ... | |
10 | # default port is 70 for gopher, 80 for http, 443 for https | |
11 | # default filetype depends upon selector: | |
12 | # - 0: plain text | |
13 | # - 1: menu (dir-like) | |
14 | # - ... | |
15 | # - download: fake mode to download the result without changes | |
7f7487a6 | 16 | |
05ea999a | 17 | # Manual: |
4b2acf06 NR |
18 | # When asked for a number, you can also enter 'n' or 'p' to get the |
19 | # next or previous item (+1 or -1) | |
05ea999a | 20 | |
c6852b70 NR |
21 | # ENV variables: |
22 | # LINK_COLOR: escape sequences colour (def: 2) | |
23 | # - : means no escape sequence | |
24 | # 1 : means colour 1 | |
25 | # 2 : means colour 2 | |
26 | # [...] | |
3c2abf21 NR |
27 | # INVERT : invert the output for image viewing (for white backgrounds) |
28 | # 0 : do not invert (default) | |
29 | # 1 : invert | |
c6852b70 | 30 | |
528c6011 NR |
31 | # EXIT Codes: |
32 | # 0: ok | |
33 | # 1: syntax error | |
34 | # 2: cannot contact server | |
35 | # 3: unknown selector mode | |
36 | # 255: special exit more 'q' | |
37 | ||
a8e347c7 | 38 | URI="$1" |
0eb21b21 | 39 | |
61fcec09 NR |
40 | PREFIX="[0-9hIg+]" |
41 | ||
a8e347c7 NR |
42 | PROTOCOL="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\1|g'`" |
43 | SERVER="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\2|g'`" | |
44 | PORT="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\3|g'`" | |
45 | SELECTOR="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\4|g'`" | |
46 | MODE= | |
47 | ||
48 | PORT="`echo "$PORT" | sed 's/^://'`" | |
49 | ||
0eb21b21 | 50 | # Defaults: |
a8e347c7 | 51 | if [ "$PORT" = "" ];then |
4e5b0448 | 52 | case "$PROTOCOL" in |
8adaaf0f NR |
53 | http://) PORT=80 ;; |
54 | https://) PORT=443;; | |
4e5b0448 NR |
55 | *) PORT=70 ;; |
56 | esac | |
a8e347c7 NR |
57 | fi |
58 | ||
0eb21b21 NR |
59 | if [ "$MODE" = "" ]; then |
60 | # "" or dir-like selector? -> 1 ; if not -> 0 | |
61 | echo "$SELECTOR" | grep "/$" >/dev/null && MODE=1 || MODE=0 | |
62 | [ "$SELECTOR" = "" ] && MODE=1 | |
61fcec09 NR |
63 | |
64 | # check explicit modes: | |
a8e347c7 NR |
65 | if echo "$SELECTOR" | grep "^/\?\($PREFIX\|download\)/" >/dev/null; then |
66 | MODE="`echo "$SELECTOR" | sed 's:^/\?\([^/]*\)/\(.*\):\1:'`" | |
67 | SELECTOR="`echo "$SELECTOR" | sed 's:^/\?\([^/]*\)/\(.*\):\2:'`" | |
61fcec09 | 68 | fi |
0eb21b21 NR |
69 | fi |
70 | ||
71 | if [ "$SERVER" = "" ]; then | |
a8e347c7 | 72 | echo "Syntax error: $0 [gopher uri]" >&2 |
528c6011 | 73 | exit 1 |
0eb21b21 NR |
74 | fi |
75 | ||
c6852b70 NR |
76 | # can be "-" for no escape sequences |
77 | [ "$LINK_COLOR" = "" ] && LINK_COLOR=2 | |
050494fa NR |
78 | |
79 | # Start and end link tags | |
80 | SL= | |
81 | EL= | |
c6852b70 | 82 | if [ "$LINK_COLOR" != "-" ]; then |
050494fa | 83 | SL="`tput setf $LINK_COLOR``tput setaf $LINK_COLOR`" |
1ad44e82 | 84 | EL="`tput init`" |
4e5b0448 | 85 | export LESS="${LESS} -R" |
050494fa NR |
86 | fi |
87 | ||
3c2abf21 NR |
88 | # Invert image viewer |
89 | if [ "$INVERT" = 1 ]; then | |
90 | INVERT="--invert" | |
91 | else | |
92 | INVERT= | |
93 | fi | |
94 | ||
4b2acf06 | 95 | # $0 [FILE] |
050494fa | 96 | # Display a gopher menu for the given resource |
0eb21b21 NR |
97 | cat_menu() { |
98 | i=0 | |
a8e347c7 | 99 | cat "$1" | grep "^i\|^$PREFIX" | sed 's:\\:\\\\\\\\:g' | while read ln; do |
0eb21b21 | 100 | if echo "$ln" | grep "^i" >/dev/null 2>&1; then |
4b2acf06 | 101 | echo "$ln" | sed "s:^.\([^\t]*\).*$: \1:g" |
7f7487a6 | 102 | elif echo "$ln" | grep "^$PREFIX" >/dev/null 2>&1; then |
0eb21b21 | 103 | i=`expr $i + 1` |
1ad44e82 | 104 | [ $i -le 9 ] && i=0$i |
0eb21b21 NR |
105 | field="`echo "$ln" | cut -c1`" |
106 | case "$field" in | |
107 | 0) typ='TXT';; | |
7f7487a6 NR |
108 | 1) typ='DIR';; # menu, actually |
109 | 7) typ='(?)';; # query | |
110 | 8) typ='TEL';; # TELnet (not TELephone) | |
111 | h) typ='WEB';; # HTML | |
7f7487a6 | 112 | I) typ='IMG';; |
1ad44e82 | 113 | g) typ='GIF';; |
7f7487a6 | 114 | +) typ='SVR';; # redundant server |
050494fa | 115 | *) typ='!!!';; |
0eb21b21 | 116 | esac |
4b2acf06 | 117 | echo "$ln" | sed "s:^.\\([^\t]*\\).*:$typ $i $SL\\1$EL:g" |
0eb21b21 NR |
118 | fi |
119 | done | |
120 | } | |
121 | ||
0eb21b21 | 122 | # $0 [FILE] [INDEX] [FIELD] |
050494fa NR |
123 | # Get a field from the given-by-index link in FILE |
124 | # | |
0eb21b21 NR |
125 | # Fields: |
126 | # 1 = type/name | |
127 | # 2 = selector | |
128 | # 3 = server | |
129 | # 4 = port | |
130 | getsel() { | |
7f7487a6 | 131 | cat "$1" | grep "^$PREFIX" | tail -n+"$2" | head -n 1 | cut -f"$3" |
0eb21b21 NR |
132 | } |
133 | ||
da184edf | 134 | # Save page content to 'tmp' file |
bb019694 | 135 | tmp="`mktemp -t gofetch.current_page.XXXXXX`" |
0eb21b21 | 136 | finish() { |
370b6826 | 137 | rm -rf "$tmp" "$tmp.jpg" "$tmp.menu" "$tmp.choice" |
0eb21b21 NR |
138 | } |
139 | trap finish EXIT | |
140 | ||
a8e347c7 NR |
141 | ok=true |
142 | if [ "$PROTOCOL" = gopher:// -o "$PROTOCOL" = "" ]; then | |
143 | echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp" || ok=false | |
144 | else | |
145 | if wget -h >/dev/null 2>&1; then | |
146 | wget "${PROTOCOL}$SERVER:$PORT/$SELECTOR" -O "$tmp" >/dev/null 2>&1 | |
147 | else | |
148 | curl "${PROTOCOL}$SERVER:$PORT/$SELECTOR" > "$tmp" 2>/dev/null | |
149 | fi | |
150 | fi | |
151 | ||
152 | if [ $ok = false ]; then | |
153 | echo Cannot contact gopher uri "[$URI]" >&2 | |
528c6011 NR |
154 | exit 2 |
155 | fi | |
156 | ||
0eb21b21 | 157 | if [ $MODE = 1 ]; then |
a8e347c7 | 158 | sed --in-place 's:\r\n:\n:g;s:\r::g' "$tmp" |
0eb21b21 NR |
159 | fi |
160 | ||
da184edf | 161 | # Process page content |
0eb21b21 | 162 | case "$MODE" in |
7f7487a6 NR |
163 | download) |
164 | # Special, fake mode, only from top-level | |
165 | cat "$tmp" | |
166 | ;; | |
0eb21b21 NR |
167 | 0) |
168 | cat "$tmp" | less | |
169 | ;; | |
1ad44e82 | 170 | 1|+) |
05ea999a | 171 | CHOICE=0 |
0eb21b21 | 172 | while [ "$CHOICE" != "" ]; do |
4b2acf06 NR |
173 | cat_menu "$tmp" | less |
174 | read -p "[$SELECTOR]: " NEW_CHOICE | |
175 | if [ "$NEW_CHOICE" = p ]; then | |
176 | CHOICE=`expr "$CHOICE" - 1 2>/dev/null` | |
177 | if [ "$CHOICE" -lt 0 ]; then | |
178 | CHOICE=`cat "$tmp" | grep "^$PREFIX" | wc --lines` | |
370b6826 | 179 | fi |
4b2acf06 NR |
180 | elif [ "$NEW_CHOICE" = n ]; then |
181 | CHOICE=`expr "$CHOICE" + 1 2>/dev/null` | |
370b6826 | 182 | else |
4b2acf06 | 183 | CHOICE="$NEW_CHOICE" |
370b6826 NR |
184 | fi |
185 | ||
1ad44e82 | 186 | [ "$CHOICE" = q ] && exit 255 # force-quit |
0eb21b21 NR |
187 | index="`expr 1 \* "$CHOICE" 2>/dev/null`" |
188 | if [ "$index" != "" ]; then | |
189 | goto_server="`getsel "$tmp" $index 3`" | |
190 | goto_sel="`getsel "$tmp" $index 2`" | |
191 | goto_port="`getsel "$tmp" $index 4`" | |
192 | goto_mode="`getsel "$tmp" $index 1 | cut -c1`" | |
fcda6ae3 | 193 | echo "Digging to [$goto_server:$goto_port] $index [$goto_sel]..." |
a8e347c7 | 194 | sh "$0" "$goto_server:$goto_port/$goto_mode/$goto_sel" |
1ad44e82 | 195 | [ $? = 255 ] && exit 255 # force-quit |
0eb21b21 NR |
196 | fi |
197 | done | |
198 | ;; | |
199 | 7) | |
200 | read -p "Query: " SEARCH | |
201 | selQuery="$SELECTOR $SEARCH" | |
202 | ||
203 | exec sh "$0" "$SERVER" "$selQuery" "$PORT" 1 | |
204 | ;; | |
205 | 8) | |
206 | telnet -l "$SELECTOR" "$SERVER" "$PORT" | |
207 | read DUMMY | |
208 | ;; | |
209 | 9) | |
210 | echo "<BINARY FILE>" | less | |
211 | ;; | |
da184edf | 212 | g|I) |
5afd6400 NR |
213 | if img2aa --help >/dev/null 2>&1; then |
214 | img2aa --mode=DITHERING \ | |
3c2abf21 | 215 | $INVERT \ |
5afd6400 NR |
216 | --width=74 "$tmp" | less |
217 | elif jp2a -h >/dev/null 2>&1; then | |
218 | if convert -h >/dev/null 2>&1; then | |
da184edf | 219 | convert "$tmp" "$tmp.jpg" |
538b88d6 | 220 | jp2a --border --chars=" .-+=o8#"\ |
3c2abf21 | 221 | $INVERT \ |
da184edf NR |
222 | --width=74 "$tmp.jpg" | less |
223 | else | |
5afd6400 NR |
224 | echo "required program not found to view images: convert" \ |
225 | | less | |
da184edf NR |
226 | fi |
227 | else | |
5afd6400 NR |
228 | echo "required program not found to view images:" \ |
229 | jp2a or img2aa | less | |
da184edf NR |
230 | fi |
231 | ;; | |
0eb21b21 NR |
232 | *) |
233 | echo "unknwon selector mode: <$MODE>" | less | |
234 | exit 3 | |
235 | ;; | |
236 | esac | |
1ad44e82 | 237 |