From ffc69736a606fd8f9a10468cce48b9a37b428944 Mon Sep 17 00:00:00 2001
From: Lars Hjemli <hjemli@gmail.com>
Date: Sat, 16 Jun 2007 20:20:42 +0200
Subject: 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.

diff --git a/Makefile b/Makefile
index 57f80f8..c2a5736 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ CGIT_SCRIPT_NAME = cgit.cgi
 
 EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
 OBJECTS = shared.o cache.o parsing.o html.o ui-shared.o ui-repolist.o \
-	ui-summary.o ui-log.o ui-view.o ui-tree.o ui-commit.o ui-diff.o \
+	ui-summary.o ui-log.o ui-tree.o ui-commit.o ui-diff.o \
 	ui-snapshot.o ui-blob.o
 
 CFLAGS += -Wall
diff --git a/cgit.c b/cgit.c
index 34e590e..1c213c7 100644
--- a/cgit.c
+++ b/cgit.c
@@ -97,14 +97,11 @@ static void cgit_print_repo_page(struct cacheitem *item)
 			       cgit_query_path, 1);
 		break;
 	case CMD_TREE:
-		cgit_print_tree(cgit_query_head, cgit_query_sha1, cgit_query_path);
+		cgit_print_tree(cgit_query_sha1, cgit_query_path);
 		break;
 	case CMD_COMMIT:
 		cgit_print_commit(cgit_query_head);
 		break;
-	case CMD_VIEW:
-		cgit_print_view(cgit_query_sha1, cgit_query_path);
-		break;
 	case CMD_DIFF:
 		cgit_print_diff(cgit_query_head, cgit_query_sha1, cgit_query_sha2,
 				cgit_query_path);
diff --git a/cgit.css b/cgit.css
index 8bd6bf4..30fde03 100644
--- a/cgit.css
+++ b/cgit.css
@@ -199,10 +199,22 @@ td.filemode {
 	font-family: monospace;
 }
 
-td.blob {
+table.blob {
+	margin-top: 0.5em;
+	border-top: solid 1px black;
+}
+
+table.blob td.no {
+	border-right: solid 1px black;
+	color: black;
+	background-color: #eee;
+	text-align: right;
+}
+
+table.blob td.txt {
 	white-space: pre;
 	font-family: monospace;
-	background-color: white;
+	padding-left: 0.5em;
 }
 
 table.nowrap td {
diff --git a/cgit.h b/cgit.h
index 2f3fca1..b93e2e8 100644
--- a/cgit.h
+++ b/cgit.h
@@ -25,9 +25,8 @@
 #define CMD_COMMIT   2
 #define CMD_DIFF     3
 #define CMD_TREE     4
-#define CMD_VIEW     5
-#define CMD_BLOB     6
-#define CMD_SNAPSHOT 7
+#define CMD_BLOB     5
+#define CMD_SNAPSHOT 6
 
 
 /*
@@ -215,9 +214,8 @@ extern void cgit_print_snapshot_start(const char *mimetype,
 extern void cgit_print_repolist(struct cacheitem *item);
 extern void cgit_print_summary();
 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *path, int pager);
-extern void cgit_print_view(const char *hex, char *path);
 extern void cgit_print_blob(struct cacheitem *item, const char *hex, char *path);
-extern void cgit_print_tree(const char *rev, const char *hex, char *path);
+extern void cgit_print_tree(const char *rev, char *path);
 extern void cgit_print_commit(const char *hex);
 extern void cgit_print_diff(const char *head, const char *old_hex, const char *new_hex,
 			    char *path);
diff --git a/shared.c b/shared.c
index b6d2fa1..c7cd8a5 100644
--- a/shared.c
+++ b/shared.c
@@ -59,7 +59,8 @@ int htmlfd = 0;
 
 int cgit_get_cmd_index(const char *cmd)
 {
-	static char *cmds[] = {"log", "commit", "diff", "tree", "view", "blob", "snapshot", NULL};
+	static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
+			       "snapshot", NULL};
 	int i;
 
 	for(i = 0; cmds[i]; i++)
diff --git a/ui-commit.c b/ui-commit.c
index 1d12bbb..ed5384d 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -182,8 +182,7 @@ void cgit_print_commit(const char *hex)
 	cgit_print_date(info->committer_date, FMT_LONGDATE);
 	html("</td></tr>\n");
 	html("<tr><th>tree</th><td colspan='2' class='sha1'><a href='");
-	query = fmt("h=%s&amp;id=%s", sha1_to_hex(commit->object.sha1),
-		    sha1_to_hex(commit->tree->object.sha1));
+	query = fmt("h=%s", sha1_to_hex(commit->object.sha1));
 	html_attr(cgit_pageurl(cgit_query_repo, "tree", query));
 	htmlf("'>%s</a></td></tr>\n", sha1_to_hex(commit->tree->object.sha1));
       	for (p = commit->parents; p ; p = p->next) {
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();
 }
diff --git a/ui-view.c b/ui-view.c
deleted file mode 100644
index 8873415..0000000
--- a/ui-view.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/* ui-view.c: functions to output _any_ object, given it's sha1
- *
- * Copyright (C) 2006 Lars Hjemli
- *
- * Licensed under GNU General Public License v2
- *   (see COPYING for full license text)
- */
-
-#include "cgit.h"
-
-void cgit_print_view(const char *hex, char *path)
-{
-	unsigned char sha1[20];
-	enum object_type type;
-	unsigned char *buf;
-	unsigned long size;
-
-	if (get_sha1_hex(hex, sha1)){
-		cgit_print_error(fmt("Bad hex value: %s", hex));
-	        return;
-	}
-
-	type = sha1_object_info(sha1, &size);
-	if (type == OBJ_BAD) {
-		cgit_print_error(fmt("Bad object name: %s", hex));
-		return;
-	}
-
-	buf = read_sha1_file(sha1, &type, &size);
-	if (!buf) {
-		cgit_print_error(fmt("Error reading object %s", hex));
-		return;
-	}
-
-	buf[size] = '\0';
-	html("<table class='list'>\n");
-	html("<tr class='nohover'><th class='left'>");
-	if (path)
-		htmlf("%s (", path);
-	htmlf("%s %s, %li bytes", typename(type), hex, size);
-	if (path)
-		html(")");
-
-	html(" <a href='");
-	html_attr(cgit_pageurl(cgit_query_repo, "blob", 
-			       fmt("id=%s&amp;path=%s", 
-				   hex,
-				   path)));
-	html("'>download</a>");
-	html("</th></tr>\n");
-	html("<tr><td class='blob'>\n");
-	html_txt(buf);
-	html("\n</td></tr>\n");
-	html("</table>\n");
-}
-- 
cgit v0.10.1