modifyHeader needs to modify diff hunk header with the new start line and end line with calculated span. if diff hunk header is -100, 50 +100, 50 and startLine = 120, endLine=140 then we need to modify header to -120,20 +120,20. warning: changes are possible and param endLine may not exist in the fu
(hunk parser.HunkHeader, startLine, endLine int)
| 52 | // then we need to modify header to -120,20 +120,20. |
| 53 | // warning: changes are possible and param endLine may not exist in the future. |
| 54 | func modifyHeader(hunk parser.HunkHeader, startLine, endLine int) []byte { |
| 55 | oldStartLine := hunk.OldLine |
| 56 | newStartLine := hunk.NewLine |
| 57 | oldSpan := hunk.OldSpan |
| 58 | newSpan := hunk.NewSpan |
| 59 | |
| 60 | oldEndLine := oldStartLine + oldSpan |
| 61 | newEndLine := newStartLine + newSpan |
| 62 | |
| 63 | if startLine > 0 { |
| 64 | if startLine < oldEndLine { |
| 65 | oldStartLine = startLine |
| 66 | } |
| 67 | |
| 68 | if startLine < newEndLine { |
| 69 | newStartLine = startLine |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | if endLine > 0 { |
| 74 | if endLine < oldEndLine { |
| 75 | oldSpan = endLine - startLine |
| 76 | } else if oldEndLine > startLine { |
| 77 | oldSpan = oldEndLine - startLine |
| 78 | } |
| 79 | |
| 80 | if endLine < newEndLine { |
| 81 | newSpan = endLine - startLine |
| 82 | } else if newEndLine > startLine { |
| 83 | newSpan = newEndLine - startLine |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | return []byte(fmt.Sprintf("@@ -%d,%d +%d,%d @@", |
| 88 | oldStartLine, oldSpan, newStartLine, newSpan)) |
| 89 | } |
| 90 | |
| 91 | // cutLinesFromFullFileDiff reads from r and writes to w headers and between |
| 92 | // startLine and endLine. if startLine and endLine is equal to 0 then it uses io.Copy |
no outgoing calls
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