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 NR |
17 | # Manual: |
18 | # When asked for a number (non-dialog uses only), you can also | |
19 | # enter 'n' or 'p' to get the next or previous item (+1 or -1) | |
20 | ||
c6852b70 | 21 | # ENV variables: |
370b6826 NR |
22 | # USE_DIALOG: force the usage of the command 'dialog' |
23 | # : true if dialog is found | |
24 | # 0 : do not | |
25 | # 1 : force the use of dialog | |
c6852b70 NR |
26 | # LINK_COLOR: escape sequences colour (def: 2) |
27 | # - : means no escape sequence | |
28 | # 1 : means colour 1 | |
29 | # 2 : means colour 2 | |
30 | # [...] | |
3c2abf21 NR |
31 | # INVERT : invert the output for image viewing (for white backgrounds) |
32 | # 0 : do not invert (default) | |
33 | # 1 : invert | |
c6852b70 | 34 | |
528c6011 NR |
35 | # EXIT Codes: |
36 | # 0: ok | |
37 | # 1: syntax error | |
38 | # 2: cannot contact server | |
39 | # 3: unknown selector mode | |
40 | # 255: special exit more 'q' | |
41 | ||
a8e347c7 | 42 | URI="$1" |
0eb21b21 | 43 | |
61fcec09 NR |
44 | PREFIX="[0-9hIg+]" |
45 | ||
a8e347c7 NR |
46 | PROTOCOL="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\1|g'`" |
47 | SERVER="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\2|g'`" | |
48 | PORT="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\3|g'`" | |
49 | SELECTOR="`echo $URI | sed 's|^\([^:]*://\)\?\([^:/]*\)\(:[^/]*\)\?/\?\(.*\)\?|\4|g'`" | |
50 | MODE= | |
51 | ||
52 | PORT="`echo "$PORT" | sed 's/^://'`" | |
53 | ||
0eb21b21 | 54 | # Defaults: |
a8e347c7 NR |
55 | if [ "$PORT" = "" ];then |
56 | if [ "$PROTOCOL" = http ]; then | |
57 | PORT=80 | |
58 | elif [ "$PROTOCOL" = https ]; then | |
59 | PORT=443 | |
60 | else | |
61 | PORT=70 | |
62 | fi | |
63 | fi | |
64 | ||
0eb21b21 NR |
65 | if [ "$MODE" = "" ]; then |
66 | # "" or dir-like selector? -> 1 ; if not -> 0 | |
67 | echo "$SELECTOR" | grep "/$" >/dev/null && MODE=1 || MODE=0 | |
68 | [ "$SELECTOR" = "" ] && MODE=1 | |
61fcec09 NR |
69 | |
70 | # check explicit modes: | |
a8e347c7 NR |
71 | if echo "$SELECTOR" | grep "^/\?\($PREFIX\|download\)/" >/dev/null; then |
72 | MODE="`echo "$SELECTOR" | sed 's:^/\?\([^/]*\)/\(.*\):\1:'`" | |
73 | SELECTOR="`echo "$SELECTOR" | sed 's:^/\?\([^/]*\)/\(.*\):\2:'`" | |
61fcec09 | 74 | fi |
0eb21b21 NR |
75 | fi |
76 | ||
77 | if [ "$SERVER" = "" ]; then | |
a8e347c7 | 78 | echo "Syntax error: $0 [gopher uri]" >&2 |
528c6011 | 79 | exit 1 |
0eb21b21 NR |
80 | fi |
81 | ||
c6852b70 NR |
82 | # can be "-" for no escape sequences |
83 | [ "$LINK_COLOR" = "" ] && LINK_COLOR=2 | |
050494fa NR |
84 | |
85 | # Start and end link tags | |
86 | SL= | |
87 | EL= | |
c6852b70 | 88 | if [ "$LINK_COLOR" != "-" ]; then |
050494fa | 89 | SL="`tput setf $LINK_COLOR``tput setaf $LINK_COLOR`" |
1ad44e82 | 90 | EL="`tput init`" |
8210ebed | 91 | export LESS="${LESS}-R" |
050494fa NR |
92 | fi |
93 | ||
370b6826 NR |
94 | # 'dialog' or text |
95 | if [ "$USE_DIALOG" = "" ]; then | |
96 | if dialog --help >/dev/null 2>&1; then | |
97 | USE_DIALOG=1 | |
98 | else | |
99 | USE_DIALOG=0 | |
100 | fi | |
101 | fi | |
102 | ||
3c2abf21 NR |
103 | # Invert image viewer |
104 | if [ "$INVERT" = 1 ]; then | |
105 | INVERT="--invert" | |
106 | else | |
107 | INVERT= | |
108 | fi | |
109 | ||
370b6826 | 110 | # $0 [FILE] (dialog) |
050494fa | 111 | # Display a gopher menu for the given resource |
0eb21b21 NR |
112 | cat_menu() { |
113 | i=0 | |
a8e347c7 | 114 | cat "$1" | grep "^i\|^$PREFIX" | sed 's:\\:\\\\\\\\:g' | while read ln; do |
0eb21b21 | 115 | if echo "$ln" | grep "^i" >/dev/null 2>&1; then |
370b6826 NR |
116 | if [ "$2" != dialog ]; then |
117 | echo "$ln" | sed "s:^.\([^\t]*\).*$: \1:g" | |
118 | else | |
119 | echo "$ln" | sed 's:":'"''"':g;s:^.\([^\t]*\).*$:" " "\1":g' | |
120 | fi | |
7f7487a6 | 121 | elif echo "$ln" | grep "^$PREFIX" >/dev/null 2>&1; then |
0eb21b21 | 122 | i=`expr $i + 1` |
1ad44e82 | 123 | [ $i -le 9 ] && i=0$i |
0eb21b21 NR |
124 | field="`echo "$ln" | cut -c1`" |
125 | case "$field" in | |
126 | 0) typ='TXT';; | |
7f7487a6 NR |
127 | 1) typ='DIR';; # menu, actually |
128 | 7) typ='(?)';; # query | |
129 | 8) typ='TEL';; # TELnet (not TELephone) | |
130 | h) typ='WEB';; # HTML | |
7f7487a6 | 131 | I) typ='IMG';; |
1ad44e82 | 132 | g) typ='GIF';; |
7f7487a6 | 133 | +) typ='SVR';; # redundant server |
050494fa | 134 | *) typ='!!!';; |
0eb21b21 | 135 | esac |
370b6826 NR |
136 | if [ "$2" != dialog ]; then |
137 | echo "$ln" | sed "s:^.\\([^\t]*\\).*:$typ $i $SL\\1$EL:g" | |
138 | else | |
139 | echo "$ln" | sed "s:"'"'":'':g;s:^.\\([^\t]*\\).*:"'"'"$typ $i"'"'" "'"\1"'":g" | |
140 | fi | |
0eb21b21 NR |
141 | fi |
142 | done | |
143 | } | |
144 | ||
0eb21b21 | 145 | # $0 [FILE] [INDEX] [FIELD] |
050494fa NR |
146 | # Get a field from the given-by-index link in FILE |
147 | # | |
0eb21b21 NR |
148 | # Fields: |
149 | # 1 = type/name | |
150 | # 2 = selector | |
151 | # 3 = server | |
152 | # 4 = port | |
153 | getsel() { | |
7f7487a6 | 154 | cat "$1" | grep "^$PREFIX" | tail -n+"$2" | head -n 1 | cut -f"$3" |
0eb21b21 NR |
155 | } |
156 | ||
da184edf | 157 | # Save page content to 'tmp' file |
bb019694 | 158 | tmp="`mktemp -t gofetch.current_page.XXXXXX`" |
0eb21b21 | 159 | finish() { |
370b6826 | 160 | rm -rf "$tmp" "$tmp.jpg" "$tmp.menu" "$tmp.choice" |
0eb21b21 NR |
161 | } |
162 | trap finish EXIT | |
163 | ||
a8e347c7 NR |
164 | ok=true |
165 | if [ "$PROTOCOL" = gopher:// -o "$PROTOCOL" = "" ]; then | |
166 | echo "$SELECTOR" | nc "$SERVER" "$PORT" > "$tmp" || ok=false | |
167 | else | |
168 | if wget -h >/dev/null 2>&1; then | |
169 | wget "${PROTOCOL}$SERVER:$PORT/$SELECTOR" -O "$tmp" >/dev/null 2>&1 | |
170 | else | |
171 | curl "${PROTOCOL}$SERVER:$PORT/$SELECTOR" > "$tmp" 2>/dev/null | |
172 | fi | |
173 | fi | |
174 | ||
175 | if [ $ok = false ]; then | |
176 | echo Cannot contact gopher uri "[$URI]" >&2 | |
528c6011 NR |
177 | exit 2 |
178 | fi | |
179 | ||
0eb21b21 | 180 | if [ $MODE = 1 ]; then |
a8e347c7 | 181 | sed --in-place 's:\r\n:\n:g;s:\r::g' "$tmp" |
0eb21b21 NR |
182 | fi |
183 | ||
da184edf | 184 | # Process page content |
0eb21b21 | 185 | case "$MODE" in |
7f7487a6 NR |
186 | download) |
187 | # Special, fake mode, only from top-level | |
188 | cat "$tmp" | |
189 | ;; | |
0eb21b21 NR |
190 | 0) |
191 | cat "$tmp" | less | |
192 | ;; | |
1ad44e82 | 193 | 1|+) |
05ea999a | 194 | CHOICE=0 |
0eb21b21 | 195 | while [ "$CHOICE" != "" ]; do |
370b6826 NR |
196 | if [ "$USE_DIALOG" = 1 ]; then |
197 | > "$tmp.menu" | |
198 | cat_menu "$tmp" dialog | while read ln; do | |
199 | echo -n " $ln" >> "$tmp.menu" | |
200 | done | |
201 | [ "$LINES" = "" ] && LINES=`tput lines` | |
202 | [ "$COLUMNS" = "" ] && COLUMNS=`tput cols` | |
203 | title="$SERVER: $SELECTOR" | |
204 | dialog --extra-button --extra-label Back \ | |
205 | --cancel-label Exit \ | |
206 | --no-shadow \ | |
207 | --menu "$title" \ | |
208 | "$LINES" "$COLUMNS" "$LINES" \ | |
209 | --file "$tmp.menu" 2>"$tmp.choice" | |
370b6826 | 210 | val=$? |
3c2abf21 NR |
211 | clear |
212 | ||
370b6826 NR |
213 | if [ $val = 3 ]; then |
214 | CHOICE="" | |
215 | elif [ $val = 1 ]; then | |
216 | CHOICE="q" | |
217 | else | |
218 | CHOICE="`cat "$tmp.choice" | cut -c5-`" | |
219 | fi | |
220 | ||
221 | rm "$tmp.menu" | |
222 | rm "$tmp.choice" | |
223 | else | |
224 | cat_menu "$tmp" | less | |
05ea999a NR |
225 | read -p "[$SELECTOR]: " NEW_CHOICE |
226 | if [ "$NEW_CHOICE" = p ]; then | |
227 | CHOICE=`expr "$CHOICE" - 1 2>/dev/null` | |
228 | if [ "$CHOICE" -lt 0 ]; then | |
229 | CHOICE=`cat "$tmp" | grep "^$PREFIX" | wc --lines` | |
230 | fi | |
231 | elif [ "$NEW_CHOICE" = n ]; then | |
232 | CHOICE=`expr "$CHOICE" + 1 2>/dev/null` | |
233 | else | |
234 | CHOICE="$NEW_CHOICE" | |
235 | fi | |
370b6826 NR |
236 | fi |
237 | ||
1ad44e82 | 238 | [ "$CHOICE" = q ] && exit 255 # force-quit |
0eb21b21 NR |
239 | index="`expr 1 \* "$CHOICE" 2>/dev/null`" |
240 | if [ "$index" != "" ]; then | |
241 | goto_server="`getsel "$tmp" $index 3`" | |
242 | goto_sel="`getsel "$tmp" $index 2`" | |
243 | goto_port="`getsel "$tmp" $index 4`" | |
244 | goto_mode="`getsel "$tmp" $index 1 | cut -c1`" | |
fcda6ae3 | 245 | echo "Digging to [$goto_server:$goto_port] $index [$goto_sel]..." |
a8e347c7 | 246 | sh "$0" "$goto_server:$goto_port/$goto_mode/$goto_sel" |
1ad44e82 | 247 | [ $? = 255 ] && exit 255 # force-quit |
0eb21b21 NR |
248 | fi |
249 | done | |
250 | ;; | |
251 | 7) | |
252 | read -p "Query: " SEARCH | |
253 | selQuery="$SELECTOR $SEARCH" | |
254 | ||
255 | exec sh "$0" "$SERVER" "$selQuery" "$PORT" 1 | |
256 | ;; | |
257 | 8) | |
258 | telnet -l "$SELECTOR" "$SERVER" "$PORT" | |
259 | read DUMMY | |
260 | ;; | |
261 | 9) | |
262 | echo "<BINARY FILE>" | less | |
263 | ;; | |
da184edf | 264 | g|I) |
5afd6400 NR |
265 | if img2aa --help >/dev/null 2>&1; then |
266 | img2aa --mode=DITHERING \ | |
3c2abf21 | 267 | $INVERT \ |
5afd6400 NR |
268 | --width=74 "$tmp" | less |
269 | elif jp2a -h >/dev/null 2>&1; then | |
270 | if convert -h >/dev/null 2>&1; then | |
da184edf | 271 | convert "$tmp" "$tmp.jpg" |
538b88d6 | 272 | jp2a --border --chars=" .-+=o8#"\ |
3c2abf21 | 273 | $INVERT \ |
da184edf NR |
274 | --width=74 "$tmp.jpg" | less |
275 | else | |
5afd6400 NR |
276 | echo "required program not found to view images: convert" \ |
277 | | less | |
da184edf NR |
278 | fi |
279 | else | |
5afd6400 NR |
280 | echo "required program not found to view images:" \ |
281 | jp2a or img2aa | less | |
da184edf NR |
282 | fi |
283 | ;; | |
0eb21b21 NR |
284 | *) |
285 | echo "unknwon selector mode: <$MODE>" | less | |
286 | exit 3 | |
287 | ;; | |
288 | esac | |
1ad44e82 | 289 |