File 855cae4a336f7676f093579c9a6b2d9fae7a1f80.patch of Package yelp

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File 855cae4a336f7676f093579c9a6b2d9fae7a1f80.patch of Package yelp (Revision 4f2753178e86a9b5d830f8b10e19227f)

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From 855cae4a336f7676f093579c9a6b2d9fae7a1f80 Mon Sep 17 00:00:00 2001
From: Paul Hebble <pjhebble@gmail.com>
Date: Sun, 7 Feb 2021 21:15:18 -0600
Subject: [PATCH] Support search box for man pages

---
 Makefile.am               |   2 +
 libyelp/yelp-document.c   |  10 ++--
 libyelp/yelp-man-search.c | 106 ++++++++++++++++++++++++++++++++++++++
 libyelp/yelp-man-search.h |  32 ++++++++++++
 libyelp/yelp-uri.c        |  16 ++++++
 5 files changed, 163 insertions(+), 3 deletions(-)
 create mode 100644 libyelp/yelp-man-search.c
 create mode 100644 libyelp/yelp-man-search.h

diff --git a/Makefile.am b/Makefile.am
index 1c6b37b7..7cfef934 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -20,6 +20,7 @@ libyelp_libyelp_la_SOURCES = \
 	libyelp/yelp-mallard-document.c \
 	libyelp/yelp-man-document.c \
 	libyelp/yelp-man-parser.c \
+	libyelp/yelp-man-search.c \
 	libyelp/yelp-search-entry.c \
 	libyelp/yelp-settings.c \
 	libyelp/yelp-simple-document.c \
@@ -74,6 +75,7 @@ libyelp_libyelp_la_headers = \
 	$(top_srcdir)/libyelp/yelp-info-document.h \
 	$(top_srcdir)/libyelp/yelp-mallard-document.h \
 	$(top_srcdir)/libyelp/yelp-man-document.h \
+	$(top_srcdir)/libyelp/yelp-man-search.h \
 	$(top_srcdir)/libyelp/yelp-search-entry.h \
 	$(top_srcdir)/libyelp/yelp-settings.h \
 	$(top_srcdir)/libyelp/yelp-simple-document.h \
diff --git a/libyelp/yelp-document.c b/libyelp/yelp-document.c
index fb340ebd..60124304 100644
--- a/libyelp/yelp-document.c
+++ b/libyelp/yelp-document.c
@@ -35,6 +35,7 @@
 #include "yelp-info-document.h"
 #include "yelp-mallard-document.h"
 #include "yelp-man-document.h"
+#include "yelp-man-search.h"
 #include "yelp-settings.h"
 #include "yelp-simple-document.h"
 #include "yelp-storage.h"
@@ -889,9 +890,12 @@ document_indexed (YelpDocument *document)
         xmlNewTextChild (rootnode, NULL, BAD_CAST "title", BAD_CAST text);
         g_free (text);
 
-        value = yelp_storage_search (yelp_storage_get_default (),
-                                     document->priv->doc_uri,
-                                     term);
+        value = YELP_IS_MAN_DOCUMENT (document)
+                ? yelp_man_search (term)
+                : yelp_storage_search (yelp_storage_get_default (),
+                                       document->priv->doc_uri,
+                                       term);
+
         iter = g_variant_iter_new (value);
         if (g_variant_iter_n_children (iter) == 0) {
             xmlNewTextChild (rootnode, NULL, BAD_CAST "p",
diff --git a/libyelp/yelp-man-search.c b/libyelp/yelp-man-search.c
new file mode 100644
index 00000000..331d4031
--- /dev/null
+++ b/libyelp/yelp-man-search.c
@@ -0,0 +1,106 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Copyright (C) 2021, Paul Hebble
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Paul Hebble <pjhebble@gmail.com>
+ */
+
+#include <stdio.h>
+#include <gio/gio.h>
+#include <gio/gunixinputstream.h>
+
+#include "yelp-man-search.h"
+#include "yelp-error.h"
+
+static GInputStream*   yelp_man_search_get_apropos    (const gchar *text,
+                                                       GError **error);
+static void            yelp_man_search_add_to_builder (GVariantBuilder *builder,
+                                                       const gchar *text);
+
+static GInputStream*
+yelp_man_search_get_apropos (const gchar *text, GError **error)
+{
+    gint ystdout;
+    GError *err = NULL;
+    /* text can be a regex, so "." matches everything */
+    const gchar *argv[] = { "apropos", "-l", text == NULL ? "." : text, NULL };
+    gchar **my_argv;
+    my_argv = g_strdupv ((gchar **) argv);
+    if (!g_spawn_async_with_pipes (NULL, my_argv, NULL,
+                                   /* apropos can print "<term>: nothing appropriate."
+                                      to stderr, discard it */
+                                   G_SPAWN_SEARCH_PATH | G_SPAWN_STDERR_TO_DEV_NULL,
+                                   NULL, NULL, NULL, NULL, &ystdout, NULL, &err)) {
+        /* We failed to run the apropos program. Return a "Huh?" error. */
+        *error = g_error_new (YELP_ERROR, YELP_ERROR_UNKNOWN,
+                              "%s", err->message);
+        g_error_free (err);
+        g_strfreev (my_argv);
+        return NULL;
+    }
+    g_strfreev (my_argv);
+    return (GInputStream*) g_unix_input_stream_new (ystdout, TRUE);
+}
+
+static void
+yelp_man_search_add_to_builder (GVariantBuilder *builder, const gchar *text)
+{
+    GError *error = NULL;
+    GInputStream *apropos_stream = yelp_man_search_get_apropos (text, &error);
+    if (apropos_stream == NULL) {
+        g_critical ("Can't run apropos: %s", error->message);
+        g_error_free (error);
+    } else {
+        gchar *line;
+        gsize line_len;
+        GDataInputStream *stream = g_data_input_stream_new (apropos_stream);
+        while ((line = g_data_input_stream_read_line (stream,
+                                                      &line_len,
+                                                      NULL, NULL))) {
+            int section;
+            char *title, *description;
+            /* the 'm' modifier mallocs the strings for us */
+            switch (sscanf (line, "%ms (%d) - %m[^\n]",
+                            &title, &section, &description)) {
+                case 3: {
+                    g_variant_builder_add(builder, "(ssss)",
+                                          g_strconcat ("man:", title, NULL),
+                                          title,
+                                          description,
+                                          "");
+                } break;
+                case 2:
+                case 1:
+                    // Parse failed, don't leak
+                    g_free (title);
+                    break;
+                default:
+                    break;
+            }
+            g_free (line);
+        }
+        g_object_unref (stream);
+    }
+}
+
+GVariant *
+yelp_man_search (gchar *text)
+{
+    GVariantBuilder builder;
+    g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(ssss)"));
+    yelp_man_search_add_to_builder (&builder, text);
+    return g_variant_new ("a(ssss)", &builder);
+}
diff --git a/libyelp/yelp-man-search.h b/libyelp/yelp-man-search.h
new file mode 100644
index 00000000..af0cf7b2
--- /dev/null
+++ b/libyelp/yelp-man-search.h
@@ -0,0 +1,32 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Copyright (C) 2021, Paul Hebble
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Paul Hebble <pjhebble@gmail.com>
+ */
+
+#ifndef __YELP_MAN_SEARCH_H__
+#define __YELP_MAN_SEARCH_H__
+
+#include <glib-object.h>
+#include <gio/gio.h>
+
+#include "yelp-error.h"
+
+G_GNUC_INTERNAL
+GVariant *      yelp_man_search                (gchar *text);
+
+#endif /* __YELP_MAN_SEARCH_H__ */
diff --git a/libyelp/yelp-uri.c b/libyelp/yelp-uri.c
index ffc49cc9..1fe5cd1b 100644
--- a/libyelp/yelp-uri.c
+++ b/libyelp/yelp-uri.c
@@ -1010,6 +1010,15 @@ build_man_uris (YelpUri *uri, const char *name, const char *section)
                                  NULL);
 }
 
+static void
+resolve_man_search_uri (YelpUri *uri)
+{
+    YelpUriPrivate *priv = yelp_uri_get_instance_private (uri);
+    priv->docuri = g_strdup ("man");
+    priv->fulluri = g_strdup (priv->res_arg);
+    priv->page_id = g_strdup (priv->res_arg + 4);
+}
+
 static void
 resolve_man_uri (YelpUri *uri)
 {
@@ -1018,6 +1027,7 @@ resolve_man_uri (YelpUri *uri)
      * man:name(section)
      * man:name.section
      * man:name
+     * man:search=terms
      */
 
     /* Search via regular expressions for name, name(section) and
@@ -1033,6 +1043,12 @@ resolve_man_uri (YelpUri *uri)
     gchar *name, *section, *hash;
     gchar *path;
 
+    if (g_str_has_prefix (priv->res_arg, "man:search=")) {
+        priv->tmptype = YELP_URI_DOCUMENT_TYPE_MAN;
+        resolve_man_search_uri (uri);
+        return;
+    }
+
     if (!man_not_path) {
         /* Match group 1 should contain the name; then one of groups 3
          * and 4 will contain the section if there was one. Group 6
-- 
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File 855cae4a336f7676f093579c9a6b2d9fae7a1f80.patch of Package yelp (Revision 4f2753178e86a9b5d830f8b10e19227f)

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