94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
/*
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* Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package safesplit
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import "strings"
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// SplitPkgConfigFlags splits a pkg-config outputs string into parts.
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// Each part starts with "-" followed by a single character flag.
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// Spaces after the flag character are ignored.
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// Content is read until the next space, unless escaped with "\".
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func SplitPkgConfigFlags(s string) []string {
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var result []string
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var current strings.Builder
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i := 0
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// Skip leading whitespace
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for i < len(s) && (s[i] == ' ' || s[i] == '\t') {
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i++
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}
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for i < len(s) {
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// Start a new part
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if current.Len() > 0 {
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result = append(result, strings.TrimSpace(current.String()))
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current.Reset()
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}
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// Write "-" and the flag character
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current.WriteByte('-')
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i++
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if i < len(s) {
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current.WriteByte(s[i])
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i++
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}
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// Skip spaces after flag character
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for i < len(s) && (s[i] == ' ' || s[i] == '\t') {
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i++
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}
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// Check if next character is another flag (short flag with no argument)
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if i < len(s) && s[i] == '-' {
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// This is a short flag with no argument, finish current flag
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continue
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}
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// Read content until next space
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for i < len(s) {
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if s[i] == '\\' && i+1 < len(s) && (s[i+1] == ' ' || s[i+1] == '\t') {
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// Skip backslash and write the escaped space
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i++
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current.WriteByte(s[i])
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i++
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continue
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}
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if s[i] == ' ' || s[i] == '\t' {
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// Skip consecutive spaces
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j := i
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for j < len(s) && (s[j] == ' ' || s[j] == '\t') {
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j++
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}
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// If we've seen content, check for new flag
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if j < len(s) && s[j] == '-' {
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i = j
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break
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}
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// Otherwise, include one space and continue
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current.WriteByte(' ')
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i = j
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} else {
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current.WriteByte(s[i])
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i++
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}
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}
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}
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// Add the last part
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if current.Len() > 0 {
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result = append(result, strings.TrimSpace(current.String()))
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}
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return result
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}
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