patchloom 0.16.0

Structured file editing library and CLI for AI agents: parser-backed JSON/YAML/TOML edits, AST-aware code operations, multi-file batching, markdown operations, and MCP server
Documentation 
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use super::execute::{TxState, read_file_content};
use crate::ops::patch::{ApplyHunksOptions, apply_patch_with_loader};
use crate::plan::Operation;

/// Execute a patch operation within a transaction.
pub(crate) fn execute_patch_op(op: &Operation, tx: &mut TxState<'_>) -> anyhow::Result<usize> {
    match op {
        Operation::PatchApply {
            diff,
            on_stale,
            allow_conflicts,
        } => {
            let options = ApplyHunksOptions {
                on_stale: *on_stale,
                allow_conflicts: *allow_conflicts,
            };
            // Conflicts without allow_conflicts surface as ConflictsError from
            // apply_patch_with_loader (ops/patch early-err). When allow_conflicts
            // is true, content includes conflict markers and is staged normally.
            let patched_files = apply_patch_with_loader(
                diff,
                |path| {
                    let file_path = tx.cwd.join(path);
                    Ok(read_file_content(tx.pending, tx.existed_before, &file_path)?.to_string())
                },
                options,
            )?;
            for result in patched_files {
                let file_path = tx.cwd.join(&result.path);
                if result.is_deletion {
                    // File deletion via patch: mark for deletion.
                    tx.deletions.insert(file_path.clone());
                    tx.write_targets.insert(file_path);
                } else {
                    tx.write_file(&file_path, result.content);
                }
            }
            Ok(0)
        }

        _ => unreachable!("execute_patch_op called with non-Patch operation"),
    }
}