zeta_cli: Add --output-format both and --prompt-format only-snippets (#38920)

These are options are probably temporary, added for use in some
experimental code

Release Notes:

- N/A

Co-authored-by: Oleksiy <oleksiy@zed.dev>

crates/cloud_llm_client/src/predict_edits_v3.rs

@@ -48,6 +48,8 @@ pub enum PromptFormat {
     #[default]
     MarkedExcerpt,
     LabeledSections,
+    /// Prompt format intended for use via zeta_cli
+    OnlySnippets,
 }
 
 impl PromptFormat {
@@ -61,6 +63,7 @@ impl std::fmt::Display for PromptFormat {
         match self {
             PromptFormat::MarkedExcerpt => write!(f, "Marked Excerpt"),
             PromptFormat::LabeledSections => write!(f, "Labeled Sections"),
+            PromptFormat::OnlySnippets => write!(f, "Only Snippets"),
         }
     }
 }

crates/cloud_zeta2_prompt/src/cloud_zeta2_prompt.rs

@@ -54,6 +54,8 @@ pub fn system_prompt(format: PromptFormat) -> &'static str {
     match format {
         PromptFormat::MarkedExcerpt => MARKED_EXCERPT_SYSTEM_PROMPT,
         PromptFormat::LabeledSections => LABELED_SECTIONS_SYSTEM_PROMPT,
+        // only intended for use via zeta_cli
+        PromptFormat::OnlySnippets => "",
     }
 }
 
@@ -343,6 +345,7 @@ impl<'a> PlannedPrompt<'a> {
                 self.request.excerpt_range.start + self.request.cursor_offset,
                 CURSOR_MARKER,
             )],
+            PromptFormat::OnlySnippets => vec![],
         };
 
         let mut prompt = String::new();
@@ -432,12 +435,13 @@ impl<'a> PlannedPrompt<'a> {
             }
 
             writeln!(output, "```{}", file_path.display()).ok();
+            let mut skipped_last_snippet = false;
             for (snippet, range) in disjoint_snippets {
                 let section_index = section_ranges.len();
 
                 match self.request.prompt_format {
-                    PromptFormat::MarkedExcerpt => {
-                        if range.start > 0 {
+                    PromptFormat::MarkedExcerpt | PromptFormat::OnlySnippets => {
+                        if range.start > 0 && !skipped_last_snippet {
                             output.push_str("…\n");
                         }
                     }
@@ -454,25 +458,38 @@ impl<'a> PlannedPrompt<'a> {
                 }
 
                 if is_excerpt_file {
-                    excerpt_index = Some(section_index);
-                    let mut last_offset = range.start;
-                    let mut i = 0;
-                    while i < excerpt_file_insertions.len() {
-                        let (offset, insertion) = &excerpt_file_insertions[i];
-                        let found = *offset >= range.start && *offset <= range.end;
-                        if found {
-                            output.push_str(
-                                &snippet.text[last_offset - range.start..offset - range.start],
-                            );
-                            output.push_str(insertion);
-                            last_offset = *offset;
-                            excerpt_file_insertions.remove(i);
-                            continue;
+                    if self.request.prompt_format == PromptFormat::OnlySnippets {
+                        if range.start >= self.request.excerpt_range.start
+                            && range.end <= self.request.excerpt_range.end
+                        {
+                            skipped_last_snippet = true;
+                        } else {
+                            skipped_last_snippet = false;
+                            output.push_str(snippet.text);
                         }
-                        i += 1;
+                    } else {
+                        let mut last_offset = range.start;
+                        let mut i = 0;
+                        while i < excerpt_file_insertions.len() {
+                            let (offset, insertion) = &excerpt_file_insertions[i];
+                            let found = *offset >= range.start && *offset <= range.end;
+                            if found {
+                                excerpt_index = Some(section_index);
+                                output.push_str(
+                                    &snippet.text[last_offset - range.start..offset - range.start],
+                                );
+                                output.push_str(insertion);
+                                last_offset = *offset;
+                                excerpt_file_insertions.remove(i);
+                                continue;
+                            }
+                            i += 1;
+                        }
+                        skipped_last_snippet = false;
+                        output.push_str(&snippet.text[last_offset - range.start..]);
                     }
-                    output.push_str(&snippet.text[last_offset - range.start..]);
                 } else {
+                    skipped_last_snippet = false;
                     output.push_str(snippet.text);
                 }
 
@@ -483,7 +500,11 @@ impl<'a> PlannedPrompt<'a> {
         }
 
         Ok(SectionLabels {
-            excerpt_index: excerpt_index.context("bug: no snippet found for excerpt")?,
+            // TODO: Clean this up
+            excerpt_index: match self.request.prompt_format {
+                PromptFormat::OnlySnippets => 0,
+                _ => excerpt_index.context("bug: no snippet found for excerpt")?,
+            },
             section_ranges,
         })
     }

crates/zeta_cli/src/main.rs

@@ -15,6 +15,7 @@ use language_model::LlmApiToken;
 use project::{Project, ProjectPath, Worktree};
 use release_channel::AppVersion;
 use reqwest_client::ReqwestClient;
+use serde_json::json;
 use std::path::{Path, PathBuf};
 use std::process::exit;
 use std::str::FromStr;
@@ -86,6 +87,7 @@ enum PromptFormat {
     #[default]
     MarkedExcerpt,
     LabeledSections,
+    OnlySnippets,
 }
 
 impl Into<predict_edits_v3::PromptFormat> for PromptFormat {
@@ -93,6 +95,7 @@ impl Into<predict_edits_v3::PromptFormat> for PromptFormat {
         match self {
             Self::MarkedExcerpt => predict_edits_v3::PromptFormat::MarkedExcerpt,
             Self::LabeledSections => predict_edits_v3::PromptFormat::LabeledSections,
+            Self::OnlySnippets => predict_edits_v3::PromptFormat::OnlySnippets,
         }
     }
 }
@@ -102,6 +105,7 @@ enum OutputFormat {
     #[default]
     Prompt,
     Request,
+    Both,
 }
 
 #[derive(Debug, Clone)]
@@ -269,16 +273,18 @@ async fn get_context(
                             zeta.cloud_request_for_zeta_cli(&project, &buffer, cursor, cx)
                         })?
                         .await?;
+
+                    let planned_prompt = cloud_zeta2_prompt::PlannedPrompt::populate(&request)?;
+                    let prompt_string = planned_prompt.to_prompt_string()?.0;
                     match zeta2_args.output_format {
-                        OutputFormat::Prompt => {
-                            let planned_prompt =
-                                cloud_zeta2_prompt::PlannedPrompt::populate(&request)?;
-                            // TODO: Output the section label ranges
-                            anyhow::Ok(planned_prompt.to_prompt_string()?.0)
-                        }
+                        OutputFormat::Prompt => anyhow::Ok(prompt_string),
                         OutputFormat::Request => {
                             anyhow::Ok(serde_json::to_string_pretty(&request)?)
                         }
+                        OutputFormat::Both => anyhow::Ok(serde_json::to_string_pretty(&json!({
+                            "request": request,
+                            "prompt": prompt_string,
+                        }))?),
                     }
                 })
             })?