File: ecoli.sh 1 #!/bin/sh 2 3 # The MIT License (MIT) 4 # 5 # Copyright © 2026 pacman64 6 # 7 # Permission is hereby granted, free of charge, to any person obtaining a copy 8 # of this software and associated documentation files (the “Software”), to deal 9 # in the Software without restriction, including without limitation the rights 10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 # copies of the Software, and to permit persons to whom the Software is 12 # furnished to do so, subject to the following conditions: 13 # 14 # The above copyright notice and this permission notice shall be included in 15 # all copies or substantial portions of the Software. 16 # 17 # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 # SOFTWARE. 24 25 26 # ecoli [options...] [regex/style pairs...] 27 # 28 # 29 # Expressions COloring LInes tries to match each line read from the standard 30 # input to the regexes given, coloring/styling with the named-style paired 31 # to the first matching regex, if any. Lines not matching any regex stay the 32 # same. 33 # 34 # The options are, available both in single and double-dash versions 35 # 36 # -h, -help show this help message 37 # -i, -ins, -insensitive match the regexes given case-insensitively 38 # 39 # Some of the colors/styles available are: 40 # 41 # blue blueback 42 # bold 43 # gray grayback 44 # green greenback 45 # inverse 46 # magenta magentaback 47 # orange orangeback 48 # purple purpleback 49 # red redback 50 # underline 51 # 52 # Some style aliases are: 53 # 54 # b blue bb blueback 55 # g green gb greenback 56 # m magenta mb magentaback 57 # o orange ob orangeback 58 # p purple pb purpleback 59 # r red rb redback 60 # i inverse (highlight) 61 # u underline 62 63 64 case "$1" in 65 -h|--h|-help|--help) 66 awk '/^# +ecoli /, /^$/ { gsub(/^# ?/, ""); print }' "$0" 67 exit 0 68 ;; 69 esac 70 71 case_insensitive=0 72 case "$1" in 73 -i|--i|-ins|--ins|-insensitive|--insensitive) 74 case_insensitive=1 75 shift 76 ;; 77 esac 78 79 [ "$1" = '--' ] && shift 80 81 command='awk' 82 if [ -p /dev/stdout ] || [ -t 1 ]; then 83 command='stdbuf -oL awk' 84 fi 85 86 ${command} -v ci="${case_insensitive}" ' 87 BEGIN { 88 if (ci == 1 && IGNORECASE == "") { 89 m = "your `awk` command lacks case-insensitive regex-matching" 90 printf("\x1b[38;2;204;0;0m%s\x1b[0m\n", m) > "/dev/stderr" 91 exit 125 92 } 93 if (ci == 1) IGNORECASE = 1 94 95 # alias-lookup table 96 a["r"] = "red" 97 a["g"] = "green" 98 a["b"] = "blue" 99 a["o"] = "orange" 100 a["p"] = "purple" 101 a["m"] = "magenta" 102 a["h"] = "invert" 103 a["i"] = "invert" 104 a["u"] = "underline" 105 a["or"] = "orange" 106 a["ma"] = "magenta" 107 a["hi"] = "invert" 108 a["in"] = "invert" 109 a["un"] = "underline" 110 a["inv"] = "invert" 111 a["mag"] = "magenta" 112 a["grey"] = "gray" 113 a["inverse"] = "invert" 114 a["inverted"] = "invert" 115 a["hilite"] = "invert" 116 a["hilited"] = "invert" 117 a["highlight"] = "invert" 118 a["highlighted"] = "invert" 119 a["underlined"] = "underline" 120 a["bb"] = "blueback" 121 a["gb"] = "greenback" 122 a["mb"] = "magentaback" 123 a["ob"] = "orangeback" 124 a["pb"] = "purpleback" 125 a["rb"] = "redback" 126 a["bg"] = "greenback" 127 a["bm"] = "magentaback" 128 a["bo"] = "orangeback" 129 a["bp"] = "purpleback" 130 a["br"] = "redback" 131 a["bluebg"] = "blueback" 132 a["graybg"] = "grayback" 133 a["greenbg"] = "greenback" 134 a["greyback"] = "grayback" 135 a["greybg"] = "grayback" 136 a["magentabg"] = "magentaback" 137 a["orangebg"] = "orangeback" 138 a["purplebg"] = "purpleback" 139 a["redbg"] = "redback" 140 a["magback"] = "magentaback" 141 a["magbg"] = "magentaback" 142 a["orback"] = "orangeback" 143 a["orbg"] = "orangeback" 144 a["purback"] = "purpleback" 145 a["purbg"] = "purpleback" 146 147 # style-lookup table 148 s["red"] = "\x1b[38;2;204;0;0m" 149 s["green"] = "\x1b[38;2;0;135;95m" 150 s["blue"] = "\x1b[38;2;0;95;215m" 151 s["orange"] = "\x1b[38;2;215;95;0m" 152 s["purple"] = "\x1b[38;2;135;95;255m" 153 s["magenta"] = "\x1b[38;2;215;0;255m" 154 s["gray"] = "\x1b[38;2;168;168;168m" 155 s["bold"] = "\x1b[1m" 156 s["invert"] = "\x1b[7m" 157 s["italic"] = "\x1b[3m" 158 s["strike"] = "\x1b[9m" 159 s["underline"] = "\x1b[4m" 160 s["blueback"] = "\x1b[48;2;0;95;215m\x1b[38;2;238;238;238m" 161 s["grayback"] = "\x1b[48;2;168;168;168m\x1b[38;2;238;238;238m" 162 s["greenback"] = "\x1b[48;2;0;135;95m\x1b[38;2;238;238;238m" 163 s["magentaback"] = "\x1b[48;2;215;0;255m\x1b[38;2;238;238;238m" 164 s["orangeback"] = "\x1b[48;2;215;95;0m\x1b[38;2;238;238;238m" 165 s["purpleback"] = "\x1b[48;2;135;95;255m\x1b[38;2;238;238;238m" 166 s["redback"] = "\x1b[48;2;204;0;0m\x1b[38;2;238;238;238m" 167 168 if (ARGC % 2 != 1) { 169 printf "\x1b[31mmissing final style name\x1b[0m\n" > "/dev/stderr" 170 exit 1 171 } 172 173 for (i = 1; i < ARGC; i++) { 174 arg = ARGV[i] 175 delete ARGV[i] 176 177 if (i % 2 != 0) { 178 exprs[++n] = arg 179 continue 180 } 181 182 name = arg 183 # resolve aliases 184 if (a[name] != "") name = a[name] 185 186 if (s[name] == "") { 187 fmt = "\x1b[31mstyle/color %s not supported\x1b[0m\n" 188 printf(fmt, name) > "/dev/stderr" 189 exit 1 190 } 191 192 styles[n] = s[name] 193 resetstyles[n] = "\x1b[0m" styles[n] 194 } 195 } 196 197 { 198 # ignore cursor-movers, style-changers, and OSC sequences 199 plain = $0 200 gsub(/\x1b\[[0-9;]*[A-Za-z]/, "", plain) 201 gsub(/\x1b\][^\x1b]+\x1b\\/, "", plain) 202 203 for (i = 1; i <= n; i++) { 204 if (plain ~ exprs[i]) { 205 gsub(/\x1b\[0m/, resetstyles[i]) 206 printf "%s%s\x1b[0m\n", styles[i], $0 207 next 208 } 209 } 210 211 print 212 } 213 ' "$@"