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https://github.com/danielmiessler/Fabric.git
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b6eb969b3a
Add initial set of utility plugins for the template system: - datetime: Date/time formatting and manipulation - fetch: HTTP content retrieval and processing - file: File system operations and content handling - sys: System information and environment access - text: String manipulation and formatting operations Each plugin includes: - Implementation with comprehensive test coverage - Markdown documentation of capabilities - Integration with template package This builds on the template system to provide practical utility functions while maintaining a focused scope for the initial plugin release.
64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
// Package template provides text transformation operations for the template system.
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package template
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import (
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"fmt"
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"strings"
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"unicode"
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)
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// TextPlugin provides string manipulation operations
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type TextPlugin struct{}
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// toTitle capitalizes a letter if it follows a non-letter, unless next char is space
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func toTitle(s string) string {
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// First lowercase everything
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lower := strings.ToLower(s)
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runes := []rune(lower)
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for i := 0; i < len(runes); i++ {
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// Capitalize if previous char is non-letter AND
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// (we're at the end OR next char is not space)
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if (i == 0 || !unicode.IsLetter(runes[i-1])) {
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if i == len(runes)-1 || !unicode.IsSpace(runes[i+1]) {
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runes[i] = unicode.ToUpper(runes[i])
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}
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}
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}
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return string(runes)
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}
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// Apply executes the requested text operation on the provided value
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func (p *TextPlugin) Apply(operation string, value string) (string, error) {
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debugf("TextPlugin: operation=%s value=%q", operation, value)
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if value == "" {
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return "", fmt.Errorf("text: empty input for operation %q", operation)
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}
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switch operation {
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case "upper":
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result := strings.ToUpper(value)
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debugf("TextPlugin: upper result=%q", result)
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return result, nil
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case "lower":
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result := strings.ToLower(value)
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debugf("TextPlugin: lower result=%q", result)
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return result, nil
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case "title":
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result := toTitle(value)
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debugf("TextPlugin: title result=%q", result)
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return result, nil
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case "trim":
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result := strings.TrimSpace(value)
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debugf("TextPlugin: trim result=%q", result)
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return result, nil
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default:
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return "", fmt.Errorf("text: unknown text operation %q (supported: upper, lower, title, trim)", operation)
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}
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} |