mirror of
https://github.com/johnkerl/miller.git
synced 2026-07-18 08:55:41 +00:00
5eb40c9e7b
* Comment style * IRecordTransformer -> RecordTransfomer * make fmt * else-return style mod * snake-case -> camel-case * Remove redundant err = nil and similar zero-value initializations. * redundant break; * bugfix * neaten * typofix * simplify/standardize init of zero-length slices * Standardize fmt.Fprintf w/ errors * fix double print of "mlr:" * neatening * Uniformize error messages * make docs * avoid shadowing package names * shorten some receiver names
36 lines
952 B
Go
36 lines
952 B
Go
package cli
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import (
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"fmt"
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"os"
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)
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// CheckArgCount is for flags with values, e.g. ["-n" "10"], while we're
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// looking at the "-n": this let us see if the "10" slot exists.
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func CheckArgCount(args []string, argi int, argc int, n int) {
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if (argc - argi) < n {
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fmt.Fprintf(os.Stderr, "%s: option \"%s\" missing argument(s).\n", "mlr", args[argi])
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fmt.Fprintf(os.Stderr, "Please run \"%s --help\" for detailed usage information.\n", "mlr")
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os.Exit(1)
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}
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}
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// SeparatorFromArg is for letting people do things like `--ifs pipe`
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// rather than `--ifs '|'`.
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func SeparatorFromArg(name string) string {
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sep, ok := SEPARATOR_NAMES_TO_VALUES[name]
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if ok {
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return sep
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}
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return name
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}
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// SeparatorRegexFromArg is for letting people do things like `--ifs-regex whitespace`
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// rather than `--ifs '([ \t])+'`.
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func SeparatorRegexFromArg(name string) string {
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sep, ok := SEPARATOR_REGEX_NAMES_TO_VALUES[name]
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if ok {
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return sep
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}
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return name
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}
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