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LibDiff: Make Diff::parse_hunks fallible

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Currently the only error that can happen is an OOM. However, in the
future there may be other errors that this function may throw, such as
detecting an invalid patch.
This commit is contained in:
Shannon Booth 2023-06-24 12:44:22 +12:00 • committed by Andreas Kling
commit 23df5748f6
Notes: sideshowbarker 2024-07-17 17:49:11 +09:00
4 changed files with 10 additions and 9 deletions
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11
Userland/Libraries/LibDiff/Hunks.cpp
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@ -8,11 +8,12 @@
#include <AK/Debug.h>
namespace Diff {
Vector<Hunk> parse_hunks(DeprecatedString const& diff)
ErrorOr<Vector<Hunk>> parse_hunks(DeprecatedString const& diff)
{
Vector<DeprecatedString> diff_lines = diff.split('\n');
if (diff_lines.is_empty())
return {};
return Vector<Hunk> {};
Vector<Hunk> hunks;
@ -40,12 +41,12 @@ Vector<Hunk> parse_hunks(DeprecatedString const& diff)
hunk.target_start_line = current_location.target_start_line;
while (line_index < diff_lines.size() && diff_lines[line_index][0] == '-') {
hunk.removed_lines.append(diff_lines[line_index].substring(1, diff_lines[line_index].length() - 1));
TRY(hunk.removed_lines.try_append(diff_lines[line_index].substring(1, diff_lines[line_index].length() - 1)));
current_location.apply_offset(1, HunkLocation::LocationType::Original);
++line_index;
}
while (line_index < diff_lines.size() && diff_lines[line_index][0] == '+') {
hunk.added_lines.append(diff_lines[line_index].substring(1, diff_lines[line_index].length() - 1));
TRY(hunk.added_lines.try_append(diff_lines[line_index].substring(1, diff_lines[line_index].length() - 1)));
current_location.apply_offset(1, HunkLocation::LocationType::Target);
++line_index;
}
@ -54,7 +55,7 @@ Vector<Hunk> parse_hunks(DeprecatedString const& diff)
current_location.apply_offset(1, HunkLocation::LocationType::Both);
++line_index;
}
hunks.append(hunk);
TRY(hunks.try_append(hunk));
}
if constexpr (HUNKS_DEBUG) {