1 files changed, 238 insertions, 40 deletions

diff --git a/notmuch-show.c b/notmuch-show.c
index 376aacd7..1a1d6019 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -20,8 +20,65 @@
 
 #include "notmuch-client.h"
 
+typedef struct show_format {
+    const char *message_set_start;
+    const char *message_start;
+    void (*message) (const void *ctx,
+		     notmuch_message_t *message,
+		     int indent);
+    const char *header_start;
+    void (*header) (const void *ctx,
+		    notmuch_message_t *message);
+    const char *header_end;
+    const char *body_start;
+    void (*part) (GMimeObject *part,
+		  int *part_count);
+    const char *body_end;
+    const char *message_end;
+    const char *message_set_sep;
+    const char *message_set_end;
+} show_format_t;
+
+static void
+format_message_text (unused (const void *ctx),
+		     notmuch_message_t *message,
+		     int indent);
+static void
+format_headers_text (const void *ctx,
+		     notmuch_message_t *message);
+static void
+format_part_text (GMimeObject *part,
+		  int *part_count);
+static const show_format_t format_text = {
+    "",
+	"\fmessage{ ", format_message_text,
+	    "\fheader{\n", format_headers_text, "\fheader}\n",
+	    "\fbody{\n", format_part_text, "\fbody}\n",
+	"\fmessage}\n", "",
+    ""
+};
+
+static void
+format_message_json (const void *ctx,
+		     notmuch_message_t *message,
+		     unused (int indent));
+static void
+format_headers_json (const void *ctx,
+		     notmuch_message_t *message);
+static void
+format_part_json (GMimeObject *part,
+		  int *part_count);
+static const show_format_t format_json = {
+    "[",
+	"{", format_message_json,
+	    ", \"headers\": {", format_headers_json, "}",
+	    ", \"body\": [", format_part_json, "]",
+	"}", ", ",
+    "]"
+};
+
 static const char *
-_get_tags_as_string (void *ctx, notmuch_message_t *message)
+_get_tags_as_string (const void *ctx, notmuch_message_t *message)
 {
     notmuch_tags_t *tags;
     int first = 1;
@@ -48,7 +105,7 @@ _get_tags_as_string (void *ctx, notmuch_message_t *message)
 
 /* Get a nice, single-line summary of message. */
 static const char *
-_get_one_line_summary (void *ctx, notmuch_message_t *message)
+_get_one_line_summary (const void *ctx, notmuch_message_t *message)
 {
     const char *from;
     time_t date;
@@ -67,18 +124,87 @@ _get_one_line_summary (void *ctx, notmuch_message_t *message)
 }
 
 static void
-show_part_content (GMimeObject *part)
+format_message_text (unused (const void *ctx), notmuch_message_t *message, int indent)
+{
+    printf ("id:%s depth:%d match:%d filename:%s\n",
+	    notmuch_message_get_message_id (message),
+	    indent,
+	    notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH),
+	    notmuch_message_get_filename (message));
+}
+
+static void
+format_message_json (const void *ctx, notmuch_message_t *message, unused (int indent))
+{
+    void *ctx_quote = talloc_new (ctx);
+
+    printf ("\"id\": %s, \"match\": %s, \"filename\": %s",
+	    json_quote_str (ctx_quote, notmuch_message_get_message_id (message)),
+	    notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH) ? "true" : "false",
+	    json_quote_str (ctx_quote, notmuch_message_get_filename (message)));
+
+    talloc_free (ctx_quote);
+}
+
+static void
+format_headers_text (const void *ctx, notmuch_message_t *message)
+{
+    const char *headers[] = {
+	"Subject", "From", "To", "Cc", "Bcc", "Date"
+    };
+    const char *name, *value;
+    unsigned int i;
+
+    printf ("%s\n", _get_one_line_summary (ctx, message));
+
+    for (i = 0; i < ARRAY_SIZE (headers); i++) {
+	name = headers[i];
+	value = notmuch_message_get_header (message, name);
+	if (value)
+	    printf ("%s: %s\n", name, value);
+    }
+}
+
+static void
+format_headers_json (const void *ctx, notmuch_message_t *message)
+{
+    const char *headers[] = {
+	"Subject", "From", "To", "Cc", "Bcc", "Date"
+    };
+    const char *name, *value;
+    unsigned int i;
+    int first_header = 1;
+    void *ctx_quote = talloc_new (ctx);
+
+    for (i = 0; i < ARRAY_SIZE (headers); i++) {
+	name = headers[i];
+	value = notmuch_message_get_header (message, name);
+	if (value)
+	{
+	    if (!first_header)
+		fputs (", ", stdout);
+	    first_header = 0;
+
+	    printf ("%s: %s",
+		    json_quote_str (ctx_quote, name),
+		    json_quote_str (ctx_quote, value));
+	}
+    }
+
+    talloc_free (ctx_quote);
+}
+
+static void
+show_part_content (GMimeObject *part, GMimeStream *stream_out)
 {
-    GMimeStream *stream_stdout = g_mime_stream_file_new (stdout);
     GMimeStream *stream_filter = NULL;
     GMimeDataWrapper *wrapper;
     const char *charset;
 
     charset = g_mime_object_get_content_type_parameter (part, "charset");
 
-    if (stream_stdout) {
-	g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
-	stream_filter = g_mime_stream_filter_new(stream_stdout);
+    if (stream_out) {
+	stream_filter = g_mime_stream_filter_new(stream_out);
 	g_mime_stream_filter_add(GMIME_STREAM_FILTER(stream_filter),
 				 g_mime_filter_crlf_new(FALSE, FALSE));
         if (charset) {
@@ -92,15 +218,16 @@ show_part_content (GMimeObject *part)
 	g_mime_data_wrapper_write_to_stream (wrapper, stream_filter);
     if (stream_filter)
 	g_object_unref(stream_filter);
-    if (stream_stdout)
-	g_object_unref(stream_stdout);
 }
 
 static void
-show_part (GMimeObject *part, int *part_count)
+format_part_text (GMimeObject *part, int *part_count)
 {
     GMimeContentDisposition *disposition;
     GMimeContentType *content_type;
+    GMimeStream *stream_stdout = g_mime_stream_file_new (stdout);
+
+    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream_stdout), FALSE);
 
     disposition = g_mime_object_get_content_disposition (part);
     if (disposition &&
@@ -118,11 +245,14 @@ show_part (GMimeObject *part, int *part_count)
 	if (g_mime_content_type_is_type (content_type, "text", "*") &&
 	    !g_mime_content_type_is_type (content_type, "text", "html"))
 	{
-	    show_part_content (part);
+	    show_part_content (part, stream_stdout);
 	}
 
 	printf ("\fattachment}\n");
 
+	if (stream_stdout)
+	    g_object_unref(stream_stdout);
+
 	return;
     }
 
@@ -135,7 +265,7 @@ show_part (GMimeObject *part, int *part_count)
     if (g_mime_content_type_is_type (content_type, "text", "*") &&
 	!g_mime_content_type_is_type (content_type, "text", "html"))
     {
-	show_part_content (part);
+	show_part_content (part, stream_stdout);
     }
     else
     {
@@ -144,57 +274,96 @@ show_part (GMimeObject *part, int *part_count)
     }
 
     printf ("\fpart}\n");
+
+    if (stream_stdout)
+	g_object_unref(stream_stdout);
 }
 
 static void
-show_message (void *ctx, notmuch_message_t *message, int indent)
+format_part_json (GMimeObject *part, int *part_count)
 {
-    const char *headers[] = {
-	"Subject", "From", "To", "Cc", "Bcc", "Date"
-    };
-    const char *name, *value;
-    unsigned int i;
+    GMimeContentType *content_type;
+    GMimeContentDisposition *disposition;
+    void *ctx = talloc_new (NULL);
+    GMimeStream *stream_memory = g_mime_stream_mem_new ();
+    GByteArray *part_content;
 
-    printf ("\fmessage{ id:%s depth:%d match:%d filename:%s\n",
-	    notmuch_message_get_message_id (message),
-	    indent,
-	    notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH),
-	    notmuch_message_get_filename (message));
+    content_type = g_mime_object_get_content_type (GMIME_OBJECT (part));
 
-    printf ("\fheader{\n");
+    if (*part_count > 1)
+	fputs (", ", stdout);
 
-    printf ("%s\n", _get_one_line_summary (ctx, message));
+    printf ("{\"id\": %d, \"content-type\": %s",
+	    *part_count,
+	    json_quote_str (ctx, g_mime_content_type_to_string (content_type)));
 
-    for (i = 0; i < ARRAY_SIZE (headers); i++) {
-	name = headers[i];
-	value = notmuch_message_get_header (message, name);
-	if (value)
-	    printf ("%s: %s\n", name, value);
+    disposition = g_mime_object_get_content_disposition (part);
+    if (disposition &&
+	strcmp (disposition->disposition, GMIME_DISPOSITION_ATTACHMENT) == 0)
+    {
+	const char *filename = g_mime_part_get_filename (GMIME_PART (part));
+
+	printf (", \"filename\": %s", json_quote_str (ctx, filename));
     }
 
-    printf ("\fheader}\n");
-    printf ("\fbody{\n");
+    if (g_mime_content_type_is_type (content_type, "text", "*") &&
+	!g_mime_content_type_is_type (content_type, "text", "html"))
+    {
+	show_part_content (part, stream_memory);
+	part_content = g_mime_stream_mem_get_byte_array (GMIME_STREAM_MEM (stream_memory));
+
+	printf (", \"content\": %s", json_quote_str (ctx, (char *) part_content->data));
+    }
+
+    fputs ("}", stdout);
+
+    talloc_free (ctx);
+    if (stream_memory)
+	g_object_unref (stream_memory);
+}
+
+static void
+show_message (void *ctx, const show_format_t *format, notmuch_message_t *message, int indent)
+{
+    fputs (format->message_start, stdout);
+    if (format->message)
+	format->message(ctx, message, indent);
 
-    show_message_body (notmuch_message_get_filename (message), show_part);
+    fputs (format->header_start, stdout);
+    if (format->header)
+	format->header(ctx, message);
+    fputs (format->header_end, stdout);
 
-    printf ("\fbody}\n");
+    fputs (format->body_start, stdout);
+    if (format->part)
+	show_message_body (notmuch_message_get_filename (message), format->part);
+    fputs (format->body_end, stdout);
 
-    printf ("\fmessage}\n");
+    fputs (format->message_end, stdout);
 }
 
 
 static void
-show_messages (void *ctx, notmuch_messages_t *messages, int indent,
+show_messages (void *ctx, const show_format_t *format, notmuch_messages_t *messages, int indent,
 	       notmuch_bool_t entire_thread)
 {
     notmuch_message_t *message;
     notmuch_bool_t match;
+    int first_set = 1;
     int next_indent;
 
+    fputs (format->message_set_start, stdout);
+
     for (;
 	 notmuch_messages_has_more (messages);
 	 notmuch_messages_advance (messages))
     {
+	if (!first_set)
+	    fputs (format->message_set_sep, stdout);
+	first_set = 0;
+
+	fputs (format->message_set_start, stdout);
+
 	message = notmuch_messages_get (messages);
 
 	match = notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH);
@@ -202,15 +371,21 @@ show_messages (void *ctx, notmuch_messages_t *messages, int indent,
 	next_indent = indent;
 
 	if (match || entire_thread) {
-	    show_message (ctx, message, indent);
+	    show_message (ctx, format, message, indent);
 	    next_indent = indent + 1;
+
+	    fputs (format->message_set_sep, stdout);
 	}
 
-	show_messages (ctx, notmuch_message_get_replies (message),
+	show_messages (ctx, format, notmuch_message_get_replies (message),
 		       next_indent, entire_thread);
 
 	notmuch_message_destroy (message);
+
+	fputs (format->message_set_end, stdout);
     }
+
+    fputs (format->message_set_end, stdout);
 }
 
 int
@@ -223,15 +398,29 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))
     notmuch_thread_t *thread;
     notmuch_messages_t *messages;
     char *query_string;
+    char *opt;
+    const show_format_t *format = &format_text;
     int entire_thread = 0;
     int i;
+    int first_toplevel = 1;
 
     for (i = 0; i < argc && argv[i][0] == '-'; i++) {
 	if (strcmp (argv[i], "--") == 0) {
 	    i++;
 	    break;
 	}
-        if (strcmp(argv[i], "--entire-thread") == 0) {
+	if (STRNCMP_LITERAL (argv[i], "--format=") == 0) {
+	    opt = argv[i] + sizeof ("--format=") - 1;
+	    if (strcmp (opt, "text") == 0) {
+		format = &format_text;
+	    } else if (strcmp (opt, "json") == 0) {
+		format = &format_json;
+		entire_thread = 1;
+	    } else {
+		fprintf (stderr, "Invalid value for --format: %s\n", opt);
+		return 1;
+	    }
+	} else if (STRNCMP_LITERAL (argv[i], "--entire-thread") == 0) {
 	    entire_thread = 1;
 	} else {
 	    fprintf (stderr, "Unrecognized option: %s\n", argv[i]);
@@ -268,6 +457,8 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))
 	return 1;
     }
 
+    fputs (format->message_set_start, stdout);
+
     for (threads = notmuch_query_search_threads (query);
 	 notmuch_threads_has_more (threads);
 	 notmuch_threads_advance (threads))
@@ -280,11 +471,18 @@ notmuch_show_command (void *ctx, unused (int argc), unused (char *argv[]))
 	    INTERNAL_ERROR ("Thread %s has no toplevel messages.\n",
 			    notmuch_thread_get_thread_id (thread));
 
-	show_messages (ctx, messages, 0, entire_thread);
+	if (!first_toplevel)
+	    fputs (format->message_set_sep, stdout);
+	first_toplevel = 0;
+
+	show_messages (ctx, format, messages, 0, entire_thread);
 
 	notmuch_thread_destroy (thread);
+
     }
 
+    fputs (format->message_set_end, stdout);
+
     notmuch_query_destroy (query);
     notmuch_database_close (notmuch);