ui-tree: unify with ui-view, use path to select tree/blob

This teaches ui-tree to show both trees and blobs, thereby making ui-view
superfluous. At the same time, ui-tree is extended to honour the specified
path instead of requiering a tree/blob sha1.

1 files changed, 152 insertions, 42 deletions

diff --git a/ui-tree.c b/ui-tree.c
index cb57d8d..eb3d3ac 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -9,14 +9,56 @@
 #include "cgit.h"
 
 char *curr_rev;
+char *match_path;
+int header = 0;
 
-static int print_entry(const unsigned char *sha1, const char *base,
-                       int baselen, const char *pathname, unsigned int mode,
-                       int stage)
+static void print_object(const unsigned char *sha1, char *path)
+{
+        enum object_type type;
+        unsigned char *buf;
+        unsigned long size, lineno, start, idx;
+
+        type = sha1_object_info(sha1, &size);
+        if (type == OBJ_BAD) {
+                cgit_print_error(fmt("Bad object name: %s",
+                                     sha1_to_hex(sha1)));
+                return;
+        }
+
+        buf = read_sha1_file(sha1, &type, &size);
+        if (!buf) {
+                cgit_print_error(fmt("Error reading object %s",
+                                     sha1_to_hex(sha1)));
+                return;
+        }
+
+        html("<table class='blob'>\n");
+        idx = 0;
+        start = 0;
+        lineno = 0;
+        while(idx < size) {
+                if (buf[idx] == '\n') {
+                        buf[idx] = '\0';
+                        htmlf("<tr><td class='no'>%d</td><td class='txt'>",
+                              ++lineno);
+                        html_txt(buf + start);
+                        html("</td></tr>\n");
+                        start = idx + 1;
+                }
+                idx++;
+        }
+        html("\n</td></tr>\n");
+        html("</table>\n");
+}
+
+
+static int ls_item(const unsigned char *sha1, const char *base, int baselen,
+                   const char *pathname, unsigned int mode, int stage)
 {
         char *name;
         enum object_type type;
         unsigned long size = 0;
+        char *url, *qry;
 
         name = xstrdup(pathname);
         type = sha1_object_info(sha1, &size);
@@ -26,6 +68,10 @@ static int print_entry(const unsigned char *sha1, const char *base,
                       sha1_to_hex(sha1));
                 return 0;
         }
+        qry = fmt("h=%s&amp;path=%s%s%s", curr_rev,
+                  cgit_query_path ? cgit_query_path : "",
+                  cgit_query_path ? "/" : "", pathname);
+        url = cgit_pageurl(cgit_query_repo, "tree", qry);
         html("<tr><td class='filemode'>");
         html_filemode(mode);
         html("</td><td ");
@@ -36,69 +82,133 @@ static int print_entry(const unsigned char *sha1, const char *base,
                               sha1_to_hex(sha1)));
         } else if (S_ISDIR(mode)) {
                 html("class='ls-dir'><a href='");
-                html_attr(cgit_pageurl(cgit_query_repo, "tree",
-                                       fmt("h=%s&amp;id=%s&amp;path=%s%s/",
-                                           curr_rev,
-                                           sha1_to_hex(sha1),
-                                           cgit_query_path ? cgit_query_path : "",
-                                           pathname)));
+                html_attr(url);
         } else {
                 html("class='ls-blob'><a href='");
-                html_attr(cgit_pageurl(cgit_query_repo, "view",
-                                      fmt("h=%s&amp;id=%s&amp;path=%s%s", curr_rev,
-                                          sha1_to_hex(sha1),
-                                          cgit_query_path ? cgit_query_path : "",
-                                          pathname)));
+                html_attr(url);
         }
         htmlf("'>%s</a></td>", name);
         htmlf("<td class='filesize'>%li</td>", size);
 
         html("<td class='links'><a href='");
-        html_attr(cgit_pageurl(cgit_query_repo, "log",
-                               fmt("h=%s&amp;path=%s%s",
-                                   curr_rev,
-                                   cgit_query_path ? cgit_query_path : "",
-                                   pathname)));
-        html("'>history</a></td>");
+        qry = fmt("h=%s&amp;path=%s%s%s", curr_rev,
+                  cgit_query_path ? cgit_query_path : "",
+                  cgit_query_path ? "/" : "", pathname);
+        url = cgit_pageurl(cgit_query_repo, "log", qry);
+        html_attr(url);
+        html("' class='button'>H</a></td>");
         html("</tr>\n");
         free(name);
         return 0;
 }
 
-void cgit_print_tree(const char *rev, const char *hex, char *path)
+static void ls_head()
+{
+        html("<table class='list'>\n");
+        html("<tr class='nohover'>");
+        html("<th class='left'>Mode</th>");
+        html("<th class='left'>Name</th>");
+        html("<th class='right'>Size</th>");
+        html("<th/>");
+        html("</tr>\n");
+        header = 1;
+}
+
+static void ls_tail()
+{
+        if (!header)
+                return;
+        html("</table>\n");
+        header = 0;
+}
+
+static void ls_tree(const unsigned char *sha1, char *path)
 {
         struct tree *tree;
+
+        tree = parse_tree_indirect(sha1);
+        if (!tree) {
+                cgit_print_error(fmt("Not a tree object: %s",
+                                     sha1_to_hex(sha1)));
+                return;
+        }
+
+        ls_head();
+        read_tree_recursive(tree, "", 0, 1, NULL, ls_item);
+        ls_tail();
+}
+
+
+static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
+                     const char *pathname, unsigned mode, int stage)
+{
+        static int state;
+        static char buffer[PATH_MAX];
+        char *url;
+
+        if (state == 0) {
+                memcpy(buffer, base, baselen);
+                strcpy(buffer+baselen, pathname);
+                url = cgit_pageurl(cgit_query_repo, "tree",
+                                   fmt("h=%s&amp;path=%s", curr_rev, buffer));
+                htmlf(" / <a href='");
+                html_attr(url);
+                html("'>");
+                html_txt(xstrdup(pathname));
+                html("</a>");
+
+                if (strcmp(match_path, buffer))
+                        return READ_TREE_RECURSIVE;
+
+                if (S_ISDIR(mode)) {
+                        state = 1;
+                        ls_head();
+                        return READ_TREE_RECURSIVE;
+                } else {
+                        print_object(sha1, buffer);
+                        return 0;
+                }
+        }
+        ls_item(sha1, base, baselen, pathname, mode, stage);
+        return 0;
+}
+
+
+/*
+ * Show a tree or a blob
+ *   rev:  the commit pointing at the root tree object
+ *   path: path to tree or blob
+ */
+void cgit_print_tree(const char *rev, char *path)
+{
         unsigned char sha1[20];
         struct commit *commit;
+        const char *paths[] = {path, NULL};
+
+        if (!rev)
+                rev = cgit_query_head;
 
         curr_rev = xstrdup(rev);
-        get_sha1(rev, sha1);
+        if (get_sha1(rev, sha1)) {
+                cgit_print_error(fmt("Invalid revision name: %s", rev));
+                return;
+        }
         commit = lookup_commit_reference(sha1);
         if (!commit || parse_commit(commit)) {
-                cgit_print_error(fmt("Invalid head: %s", rev));
+                cgit_print_error(fmt("Invalid commit reference: %s", rev));
                 return;
         }
-        if (!hex)
-                hex = sha1_to_hex(commit->tree->object.sha1);
 
-        if (get_sha1_hex(hex, sha1)) {
-                cgit_print_error(fmt("Invalid object id: %s", hex));
-                return;
-        }
-        tree = parse_tree_indirect(sha1);
-        if (!tree) {
-                cgit_print_error(fmt("Not a tree object: %s", hex));
+        html("path: <a href='");
+        html_attr(cgit_pageurl(cgit_query_repo, "tree", fmt("h=%s", rev)));
+        html("'>root</a>");
+
+        if (path == NULL) {
+                ls_tree(commit->tree->object.sha1, NULL);
                 return;
         }
 
-        html_txt(path);
-        html("<table class='list'>\n");
-        html("<tr class='nohover'>");
-        html("<th class='left'>Mode</th>");
-        html("<th class='left'>Name</th>");
-        html("<th class='right'>Size</th>");
-        html("<th/>");
-        html("</tr>\n");
-        read_tree_recursive(tree, "", 0, 1, NULL, print_entry);
-        html("</table>\n");
+        match_path = path;
+        read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree);
+        ls_tail();
 }