[PATCH 2/3] Use the S-Expression structured printer for notmuch search.

[Peter Feigl]

This commit adds support for --format=sexp to notmuch search.
---
 notmuch-search.c | 6 +++++-
 sprinter.h       | 4 ++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/notmuch-search.c b/notmuch-search.c
index 830c4e4..6218622 100644
--- a/notmuch-search.c
+++ b/notmuch-search.c
@@ -305,7 +305,7 @@ notmuch_search_command (void *ctx, int argc, char *argv[])
     int exclude = EXCLUDE_TRUE;
     unsigned int i;
 
-    enum { NOTMUCH_FORMAT_JSON, NOTMUCH_FORMAT_TEXT }
+    enum { NOTMUCH_FORMAT_JSON, NOTMUCH_FORMAT_TEXT, NOTMUCH_FORMAT_SEXP }
 	format_sel = NOTMUCH_FORMAT_TEXT;
 
     notmuch_opt_desc_t options[] = {
@@ -315,6 +315,7 @@ notmuch_search_command (void *ctx, int argc, char *argv[])
 				  { 0, 0 } } },
 	{ NOTMUCH_OPT_KEYWORD, &format_sel, "format", 'f',
 	  (notmuch_keyword_t []){ { "json", NOTMUCH_FORMAT_JSON },
+				  { "sexp", NOTMUCH_FORMAT_SEXP },
 				  { "text", NOTMUCH_FORMAT_TEXT },
 				  { 0, 0 } } },
 	{ NOTMUCH_OPT_KEYWORD, &output, "output", 'o',
@@ -347,6 +348,9 @@ notmuch_search_command (void *ctx, int argc, char *argv[])
     case NOTMUCH_FORMAT_JSON:
 	format = sprinter_json_create (ctx, stdout);
 	break;
+    case NOTMUCH_FORMAT_SEXP:
+	format = sprinter_sexp_create (ctx, stdout);
+	break;
     default:
 	/* this should never happen */
 	INTERNAL_ERROR("no output format selected");
diff --git a/sprinter.h b/sprinter.h
index 912a526..59776a9 100644
--- a/sprinter.h
+++ b/sprinter.h
@@ -70,4 +70,8 @@ sprinter_text_create (const void *ctx, FILE *stream);
 struct sprinter *
 sprinter_json_create (const void *ctx, FILE *stream);
 
+/* Create a new structure printer that emits S-Expressions. */
+struct sprinter *
+sprinter_sexp_create (const void *ctx, FILE *stream);
+
 #endif // NOTMUCH_SPRINTER_H
-- 
1.8.0