tree and file presentation

1 files changed, 328 insertions, 0 deletions

diff --git a/ui_70-tree.c b/ui_70-tree.c
new file mode 100644
index 0000000..ecef53e
--- /dev/null
+++ b/ui_70-tree.c
@@ -0,0 +1,328 @@
+/* ui-tree.c: functions for tree output
+ *
+ * Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+#include "ui-tree.h"
+#include "html.h"
+#include "ui_70-shared.h"
+
+struct walk_tree_context {
+	char *curr_rev;
+	char *match_path;
+	int state;
+};
+
+static void print_text_buffer(const char *name, char *buf, unsigned long size)
+{
+	cgit_gopher_text(buf);
+}
+
+#define ROWLEN 32
+
+static void print_binary_buffer(char *buf, unsigned long size)
+{
+	unsigned long ofs, idx;
+	static char ascii[ROWLEN + 1];
+
+	html("<table summary='blob content' class='bin-blob'>\n");
+	html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
+	for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
+		htmlf("<tr><td class='right'>%04lx</td><td class='hex'>", ofs);
+		for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
+			htmlf("%*s%02x",
+			      idx == 16 ? 4 : 1, "",
+			      buf[idx] & 0xff);
+		html(" </td><td class='hex'>");
+		for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
+			ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
+		ascii[idx] = '\0';
+		html_txt(ascii);
+		html("</td></tr>\n");
+	}
+	html("</table>\n");
+}
+
+static void print_object(const struct object_id *oid, char *path, const char *basename, const char *rev)
+{
+	enum object_type type;
+	char *buf;
+	unsigned long size;
+
+	type = oid_object_info(the_repository, oid, &size);
+	if (type == OBJ_BAD) {
+		cgit_gopher_error("Bad object name");
+		return;
+	}
+
+	buf = read_object_file(oid, &type, &size);
+	if (!buf) {
+		cgit_gopher_error("Error reading object");
+		return;
+	}
+
+	cgit_set_title_from_path(path);
+
+	/*cgit_print_layout_start();*/
+
+	if (buffer_is_binary(buf, size))
+		print_binary_buffer(buf, size);
+	else
+		print_text_buffer(basename, buf, size);
+
+	free(buf);
+}
+
+struct single_tree_ctx {
+	struct strbuf *path;
+	struct object_id oid;
+	char *name;
+	size_t count;
+};
+
+static int single_tree_cb(const struct object_id *oid, struct strbuf *base,
+			  const char *pathname, unsigned mode, int stage,
+			  void *cbdata)
+{
+	struct single_tree_ctx *ctx = cbdata;
+
+	if (++ctx->count > 1)
+		return -1;
+
+	if (!S_ISDIR(mode)) {
+		ctx->count = 2;
+		return -1;
+	}
+
+	ctx->name = xstrdup(pathname);
+	oidcpy(&ctx->oid, oid);
+	strbuf_addf(ctx->path, "/%s", pathname);
+	return 0;
+}
+
+static void write_tree_link(const struct object_id *oid, char *name,
+			    char *rev, struct strbuf *fullpath)
+{
+	size_t initial_length = fullpath->len;
+	struct tree *tree;
+	struct single_tree_ctx tree_ctx = {
+		.path = fullpath,
+		.count = 1,
+	};
+	struct pathspec paths = {
+		.nr = 0
+	};
+
+	oidcpy(&tree_ctx.oid, oid);
+
+	while (tree_ctx.count == 1) {
+		cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head, rev,
+			       fullpath->buf);
+
+		tree = lookup_tree(&tree_ctx.oid);
+		if (!tree)
+			return;
+
+		free(tree_ctx.name);
+		tree_ctx.name = NULL;
+		tree_ctx.count = 0;
+
+		read_tree_recursive(tree, "", 0, 1, &paths, single_tree_cb,
+				    &tree_ctx);
+
+		if (tree_ctx.count != 1)
+			break;
+
+		html(" / ");
+		name = tree_ctx.name;
+	}
+
+	strbuf_setlen(fullpath, initial_length);
+}
+
+static int ls_item(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, int stage, void *cbdata)
+{
+	struct walk_tree_context *walk_tree_ctx = cbdata;
+	char *name;
+	struct strbuf fullpath = STRBUF_INIT;
+	struct strbuf class = STRBUF_INIT;
+	enum object_type type;
+	unsigned long size = 0;
+
+	name = xstrdup(pathname);
+	strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
+		    ctx.qry.path ? "/" : "", name);
+
+	if (!S_ISGITLINK(mode)) {
+		type = oid_object_info(the_repository, oid, &size);
+		if (type == OBJ_BAD) {
+			cgit_gopher_error("Bad object");
+			free(name);
+			return 0;
+		}
+	}
+
+	cgit_gopher_start_selector(GOPHER_TXT);
+	cgit_print_filemode(mode);
+	cgit_gopher_text(" ");
+	cgit_gopher_text_pad(name, GOPHER_SUMMARY_NAME_LEN);
+	gopherf("%10ld", size);
+	cgit_gopher_tab();
+
+	if (S_ISGITLINK(mode)) {
+		cgit_submodule_link("ls-mod", fullpath.buf, oid_to_hex(oid));
+	} else if (S_ISDIR(mode)) {
+		write_tree_link(oid, name, walk_tree_ctx->curr_rev,
+				&fullpath);
+	} else {
+		char *ext = strrchr(name, '.');
+		strbuf_addstr(&class, "ls-blob");
+		if (ext)
+			strbuf_addf(&class, " %s", ext + 1);
+		cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
+			       walk_tree_ctx->curr_rev, fullpath.buf);
+	}
+/*	if (ctx.repo->max_stats)
+		cgit_stats_link("stats", NULL, "button", ctx.qry.head,
+				fullpath.buf);
+	if (!S_ISGITLINK(mode))
+		cgit_plain_link("plain", NULL, "button", ctx.qry.head,
+				walk_tree_ctx->curr_rev, fullpath.buf);
+	if (!S_ISDIR(mode) && ctx.cfg.enable_blame)
+		cgit_blame_link("blame", NULL, "button", ctx.qry.head,
+				walk_tree_ctx->curr_rev, fullpath.buf);
+*/
+	cgit_gopher_tab();
+	cgit_gopher_end_selector();
+	free(name);
+	strbuf_release(&fullpath);
+	strbuf_release(&class);
+	return 0;
+}
+
+static void ls_head(void)
+{
+	cgit_print_layout_start();
+	cgit_gopher_start_selector(GOPHER_INFO);
+	cgit_gopher_text_pad("Mode", GOPHER_SUMMARY_MODE_LEN);
+	cgit_gopher_text_pad("Name", GOPHER_SUMMARY_NAME_LEN);
+	cgit_gopher_text_pad("Size", GOPHER_SUMMARY_AGE_LEN);
+	cgit_gopher_tab();
+	cgit_gopher_selector_link("Err");
+	cgit_gopher_end_selector();
+}
+
+static void ls_tail(void)
+{
+/*	html("</table>\n");
+	cgit_print_layout_end();
+*/
+}
+
+static void ls_tree(const struct object_id *oid, char *path, struct walk_tree_context *walk_tree_ctx)
+{
+	struct tree *tree;
+	struct pathspec paths = {
+		.nr = 0
+	};
+
+	tree = parse_tree_indirect(oid);
+	if (!tree) {
+		cgit_gopher_error("Not a tree object");
+		return;
+	}
+
+	ls_head();
+	read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
+	ls_tail();
+}
+
+
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, int stage, void *cbdata)
+{
+	struct walk_tree_context *walk_tree_ctx = cbdata;
+
+	if (walk_tree_ctx->state == 0) {
+		struct strbuf buffer = STRBUF_INIT;
+
+		strbuf_addbuf(&buffer, base);
+		strbuf_addstr(&buffer, pathname);
+		if (strcmp(walk_tree_ctx->match_path, buffer.buf))
+			return READ_TREE_RECURSIVE;
+
+		if (S_ISDIR(mode)) {
+			walk_tree_ctx->state = 1;
+			cgit_set_title_from_path(buffer.buf);
+			strbuf_release(&buffer);
+			ls_head();
+			return READ_TREE_RECURSIVE;
+		} else {
+			walk_tree_ctx->state = 2;
+			print_object(oid, buffer.buf, pathname, walk_tree_ctx->curr_rev);
+			strbuf_release(&buffer);
+			return 0;
+		}
+	}
+	ls_item(oid, base, pathname, mode, stage, walk_tree_ctx);
+	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)
+{
+	struct object_id oid;
+	struct commit *commit;
+	struct pathspec_item path_items = {
+		.match = path,
+		.len = path ? strlen(path) : 0
+	};
+	struct pathspec paths = {
+		.nr = path ? 1 : 0,
+		.items = &path_items
+	};
+	struct walk_tree_context walk_tree_ctx = {
+		.match_path = path,
+		.state = 0
+	};
+
+	if (!rev)
+		rev = ctx.qry.head;
+
+	if (get_oid(rev, &oid)) {
+		cgit_gopher_error("Invalid revision name");
+		return;
+	}
+	commit = lookup_commit_reference(&oid);
+	if (!commit || parse_commit(commit)) {
+		cgit_gopher_error("Invalid commit reference");
+		return;
+	}
+
+	walk_tree_ctx.curr_rev = xstrdup(rev);
+
+	if (path == NULL) {
+		ls_tree(&commit->maybe_tree->object.oid, NULL, &walk_tree_ctx);
+		goto cleanup;
+	}
+
+	read_tree_recursive(commit->maybe_tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	if (walk_tree_ctx.state == 1)
+		ls_tail();
+	else if (walk_tree_ctx.state == 2)
+		;
+	else
+		cgit_print_error_page(404, "Not found", "Path not found");
+
+cleanup:
+	free(walk_tree_ctx.curr_rev);
+}