A collection of scripts
yemou.pink
1#!/bin/sh
2# Script to preview fonts
3
4usage() {
5 printf '%b\n' "${0##*/} [-F FILE | -S | -t STRING] [OPTIONS]" \
6 "actions:" \
7 "\t-F FILE - read from file" \
8 "\t-S - read from stdin" \
9 "\t-t STRING - use a string" \
10 "\noptions:" \
11 "\t-b SIZE - border size" \
12 "\t-c COLORS - set the color of the text and background" \
13 "\t-f FONT - which font to preview" \
14 "\t-h - display this message" \
15 "\t-i - generate the inverse image (horizontal, vertical, none)" \
16 "\t-o FILE - output file for the generated image" \
17 "\t-s SIZE - size of the font" \
18 "\ndefault values:" \
19 "These values can be set before execution to change default values" \
20 "\tPREFON_ACTION=text (file, stdin, or text)" \
21 "\tPREFON_BORDER_SIZE=16" \
22 "\tPREFON_COLORS=\"000000,ffffff\"" \
23 "\tPREFON_FONT=\"monospace\"" \
24 "\tPREFON_OUTPUT=\"/tmp/prefon.png\"" \
25 "\tPREFON_SIZE=16" \
26 "\tPREFON_TEXT=\"The quick brown fox jumps\\\n over the lazy dog\"" \
27 "\tPREFON_INVERSE=vertical (horizontal, vertical, none)"
28}
29
30info() {
31 case $1 in
32 i ) prefix=INFO ;;
33 w ) prefix=WARNING ;;
34 e ) prefix=ERROR ;;
35 * ) printf '%s\n' "sus!" 1>&2; exit 1 ;;
36 esac
37 shift
38
39 printf "${0##*/}: $prefix: %b\n" "$*" 1>&2
40}
41
42# Default values
43PREFON_ACTION=${PREFON_ACTION:-text}
44PREFON_BORDER_SIZE=${PREFON_BORDER_SIZE:-16}
45PREFON_COLORS=${PREFON_COLORS:-000000,ffffff}
46PREFON_FONT="${PREFON_FONT:-monospace}"
47PREFON_OUTPUT="${PREFON_OUTPUT:-/tmp/prefon.png}"
48PREFON_SIZE=${PREFON_SIZE:-16}
49PREFON_TEXT="${PREFON_TEXT:-The quick brown fox jumps\n over the lazy dog}"
50PREFON_INVERSE=${PREFON_WITHOUT_INVERSE:-vertical}
51
52# Handle arguments
53while [ "$*" ]
54do
55 case $1 in
56 - ) shift; continue ;;
57 -- ) shift; break ;;
58 -* ) flag=${1#-}; shift ;;
59 * ) shift; continue ;;
60 esac
61 while [ "$flag" ]
62 do
63 arg=${flag%${flag#?}}
64 case $arg in
65 F ) PREFON_ACTION="file"; PREFON_FILE=$1; shift ;;
66 S ) PREFON_ACTION=stdin; PREFON_FILE=/dev/stdin ;;
67 b ) PREFON_BORDER_SIZE=$1; shift ;;
68 c ) PREFON_COLORS=$1; shift ;;
69 f ) PREFON_FONT=$1; shift ;;
70 h ) usage; exit 0 ;;
71 i ) PREFON_INVERSE=$1; shift ;;
72 o ) PREFON_OUTPUT=$1; shift ;;
73 s ) PREFON_SIZE=$1; shift ;;
74 t ) PREFON_ACTION=text; PREFON_TEXT=$1; shift ;;
75 * ) printf '%s\n' "${0##*/}: -$arg: invalid argument" 1>&2; usage 1>&2; exit 1 ;;
76 esac
77 flag=${flag#?}
78 done
79done
80
81generate_image() {
82 _gen_img() {
83 convert -background "#$2" -bordercolor "#$2" -border "$PREFON_BORDER_SIZE" \
84 pango:"<span foreground=\"#$1\" font_desc=\"$PREFON_FONT $PREFON_SIZE\">$4</span>" "$3"
85 }
86
87 fgcolor=${PREFON_COLORS%,*}
88 bgcolor=${PREFON_COLORS#*,}
89
90 _gen_img "$fgcolor" "$bgcolor" "$PREFON_OUTPUT" "$1" || { info e failed to generate image; exit 1; }
91
92 [ "$PREFON_INVERSE" != "none" ] && {
93 inverse="${PREFON_OUTPUT%.*}"
94 inverse="${inverse}-inverse.${PREFON_OUTPUT##*.}"
95
96 _gen_img "$bgcolor" "$fgcolor" "$inverse" "$1" || { info e failed to generate image; exit 1; }
97
98 case $PREFON_INVERSE in
99 horizontal ) convert "$PREFON_OUTPUT" "$inverse" +append "$PREFON_OUTPUT" \
100 || { info e failed to generate image; exit 1; } ;;
101 vertical ) convert "$PREFON_OUTPUT" "$inverse" -append "$PREFON_OUTPUT" \
102 || { info e failed to generate image; exit 1; } ;;
103 * ) info e "${PREFON_INVERSE}: is not a valid value for PREFON_INVERSE"; exit 1 ;;
104 esac
105
106 rm "$inverse" || info w failed to remove temporary file: "${inverse}"
107 }
108
109 printf '%s\n' "$PREFON_OUTPUT"
110}
111
112read_input() {
113 _output_file() {
114 while IFS= read -r line
115 do
116 printf '%s\n' "$line"
117 done < "$PREFON_FILE"
118 }
119
120 input="$(_output_file)"
121 generate_image "$input"
122}
123
124case $PREFON_ACTION in
125 file ) [ -e "$PREFON_FILE" ] || { info e "'$PREFON_FILE' does not exist"; exit 1; }
126 read_input ;;
127 stdin ) [ -e /dev/stdin ] || { info e "/dev/stdin does not exist"; exit 1; }
128 read_input ;;
129 text ) [ "$PREFON_TEXT" ] || { info e "string not provided"; exit 1; }
130 generate_image "$PREFON_TEXT" ;;
131 * ) info e invalid action: $PREFON_ACTION; exit 1 ;;
132esac