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42debe5871
Update format dev docs to only generate README.md and doc/foramts.md to not cause formats.svg conflicts.
39 lines
1.1 KiB
Bash
Executable File
39 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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FQ="$1"
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c() {
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echo -e "\x1b[97m# $1\x1b[0m"
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}
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s() {
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echo "\$ $1"
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sh -c "${1/fq/$FQ -o unicode=true -C}"
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}
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c "Overview of mp3 file"
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s "fq . file.mp3"
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echo
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c "Show ID3v2 tag inside mp3 file"
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s "fq '.headers[0]' file.mp3"
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echo
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c "Show encoder software used"
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s "fq -r '.frames[0].tags.encoder | tovalue' file.mp3"
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echo
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c "Decode at two offsets as mp3_frame and show bitrate"
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s "fq -d bytes '.[0xb79,0xc49:] | mp3_frame.header.bitrate' file.mp3"
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echo
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c "Extract PNG file"
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s "fq '.headers[].frames[] | select(.id == \"APIC\")?.picture | tobits' file.mp3 >file.png"
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s "file file.png"
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rm -f file.png
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echo
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c "Resolution of embedded PNG cover art as YAML"
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s "fq -r '.headers[0].frames[] | grep_by(.id == \"APIC\") | grep_by(.type == \"IHDR\") | {res: {width, height}} | toyaml' file.mp3"
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#echo
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c "Add query parameter to URL"
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s "echo 'http://host?a=b' | fq -Rr 'fromurl | .query.b = \"a b c\" | tourl'"
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echo
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c "Extract JSON and base64 encoded query parameter p"
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s "echo 'https://host?p=eyJhIjoiaGVsbG8ifQ%3D%3D' | fq -R 'fromurl.query.p | frombase64 | fromjson'"
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