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cmd/num: Add num tool which displays the binary, octal, decimal and h…
…exadecimal representation of numbers.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,31 +1,26 @@ | ||
| gitsync | ||
| ======= | ||
| # gitsync | ||
|
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| This tool keeps forked git repositories in sync with their parents. It does so | ||
| by locating the repositories of provided usernames and organizations. Then it | ||
| creates a shell script which will clone all repository forks, pull changes from | ||
| their parens and push those changes to the forked repository. | ||
|
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| Installation | ||
| ------------ | ||
| ## Installation | ||
|
|
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| go get github.com/mewmew/playground/cmd/gitsync | ||
|
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| Usage | ||
| ----- | ||
| ## Usage | ||
|
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| gitsync USER... | ||
|
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| Examples | ||
| -------- | ||
| ## Examples | ||
|
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| gitsync mewbak > sync.sh | ||
| chmod +x sync.sh | ||
| ./sync.sh | ||
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| public domain | ||
| ------------- | ||
| ## Public domain | ||
|
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||
| This code is hereby released into the *[public domain][]*. | ||
| The source code and any original content of this repository is hereby released into the [public domain]. | ||
|
|
||
| [public domain]: https://creativecommons.org/publicdomain/zero/1.0/ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,29 +1,24 @@ | ||
| metagps | ||
| ======= | ||
| # metagps | ||
|
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||
| This tool outputs the GPS coordinates of provided images. | ||
|
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| Installation | ||
| ------------ | ||
| ## Installation | ||
|
|
||
| go get github.com/mewmew/playground/cmd/metagps | ||
|
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| Usage | ||
| ----- | ||
| ## Usage | ||
|
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| metagps PATH... | ||
|
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| Examples | ||
| -------- | ||
| ## Examples | ||
|
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| metagps "2013-02-17 - 09.09.37.jpg" | ||
| // Output: | ||
| // path: 2013-02-17 - 09.09.37.jpg | ||
| // coord: N 13.410758 E 103.85964 | ||
|
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||
| public domain | ||
| ------------- | ||
| ## Public domain | ||
|
|
||
| This code is hereby released into the *[public domain][]*. | ||
| The source code and any original content of this repository is hereby released into the [public domain]. | ||
|
|
||
| [public domain]: https://creativecommons.org/publicdomain/zero/1.0/ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| # num | ||
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| The `num` tool displays the binary, octal, decimal and hexadecimal representation of numbers. | ||
|
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| ## Installation | ||
|
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| go get github.com/mewmew/playground/cmd/num | ||
|
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| ## Usage | ||
|
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| num BIN|OCT|DEC|HEX | ||
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| ## Examples | ||
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| ```bash | ||
| $ num 0b111101101 | ||
| bin: 0b111101101 | ||
| oct: 0o755 | ||
| dec: 493 | ||
| hex: 0x1ED | ||
| ``` | ||
|
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| ```bash | ||
| [~]$ num 0o755 | ||
| bin: 0b111101101 | ||
| oct: 0o755 | ||
| dec: 493 | ||
| hex: 0x1ED | ||
| ``` | ||
|
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| ```bash | ||
| $ num 493 | ||
| bin: 0b111101101 | ||
| oct: 0o755 | ||
| dec: 493 | ||
| hex: 0x1ED | ||
| ``` | ||
|
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| ```bash | ||
| $ num 0x1ED | ||
| bin: 0b111101101 | ||
| oct: 0o755 | ||
| dec: 493 | ||
| hex: 0x1ED | ||
| ``` | ||
|
|
||
| ## Public domain | ||
|
|
||
| The source code and any original content of this repository is hereby released into the [public domain]. | ||
|
|
||
| [public domain]: https://creativecommons.org/publicdomain/zero/1.0/ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| //go:generate usagen num | ||
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| // num is a tool which displays the binary, octal, decimal and hexadecimal | ||
| // representation of numbers. | ||
| package main | ||
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| import ( | ||
| "flag" | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
| ) | ||
|
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| func usage() { | ||
| const use = ` | ||
| Usage: num BIN|OCT|DEC|HEX | ||
| Examples: | ||
| num 0b111101101 | ||
| num 0o755 | ||
| num 493 | ||
| num 0x1ED | ||
| ` | ||
| fmt.Fprint(os.Stderr, use[1:]) | ||
| } | ||
|
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| func main() { | ||
| // Parse command line arguments. | ||
| flag.Usage = usage | ||
| flag.Parse() | ||
| if flag.NArg() != 1 { | ||
| flag.Usage() | ||
| os.Exit(1) | ||
| } | ||
| s := flag.Arg(0) | ||
|
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| n, err := parseNum(s) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| const format = ` | ||
| bin: 0b%b | ||
| oct: 0o%o | ||
| dec: %d | ||
| hex: 0x%X | ||
| ` | ||
| fmt.Printf(format[1:], n, n, n, n) | ||
| } | ||
|
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| // parseNum parses the given string as a binary, octal, decimal or hexadecimal | ||
| // number based on its prefix; with "0b", "0o", no prefix, and "0x" | ||
| // respectively. | ||
| func parseNum(s string) (n uint64, err error) { | ||
| var base int | ||
| switch { | ||
| case strings.HasPrefix(s, "0b"): | ||
| // Binary | ||
| base = 2 | ||
| s = s[len("0b"):] | ||
| case strings.HasPrefix(s, "0o"): | ||
| // Octal | ||
| base = 8 | ||
| s = s[len("0o"):] | ||
| case strings.HasPrefix(s, "0x"): | ||
| // Hexadecimal | ||
| base = 16 | ||
| s = s[len("0x"):] | ||
| default: | ||
| // Decimal | ||
| base = 10 | ||
| } | ||
| return strconv.ParseUint(s, base, 64) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| // generated by `usagen num`; DO NOT EDIT | ||
|
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| // Usage: num BIN|OCT|DEC|HEX | ||
| // | ||
| // Examples: | ||
| // num 0b111101101 | ||
| // num 0o755 | ||
| // num 493 | ||
| // num 0x1ED | ||
| package main |
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