tvl-depot/third_party/cgit/ui-tree.c
sterni 40803d9c6d subtree(3p/cgit): merge cgit-pink into depot cgit
cgit-pink is a maintained fork of cgit that follows upstream git more
closely and already contains a lot of patches we already had applied.
Consequently, it seems sensible it becomes our future upstream, we may
even be able to upstream some of our custom, less invasive patches.

Change-Id: Ia081e4508866f32298986c7160f4890c8a7c8922
2022-05-19 10:45:02 +02:00

411 lines
9.7 KiB
C

/* 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-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)
{
unsigned long lineno, idx;
const char *numberfmt = "<a id='n%1$d' href='#n%1$d'>%1$d</a>\n";
html("<table summary='blob content' class='blob'>\n");
if (ctx.cfg.enable_tree_linenumbers) {
html("<tr><td class='linenumbers'><pre>");
idx = 0;
lineno = 0;
if (size) {
htmlf(numberfmt, ++lineno);
while (idx < size - 1) { // skip absolute last newline
if (buf[idx] == '\n')
htmlf(numberfmt, ++lineno);
idx++;
}
}
html("</pre></td>\n");
}
else {
html("<tr>\n");
}
if (ctx.repo->source_filter) {
char *filter_arg = xstrdup(name);
html("<td class='lines'><pre><code>");
cgit_open_filter(ctx.repo->source_filter, filter_arg);
html_raw(buf, size);
cgit_close_filter(ctx.repo->source_filter);
free(filter_arg);
html("</code></pre></td></tr></table>\n");
return;
}
html("<td class='lines'><pre><code>");
html_txt(buf);
html("</code></pre></td></tr></table>\n");
}
#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, const char *path, const char *basename, const char *rev)
{
enum object_type type;
char *buf;
unsigned long size;
int is_binary;
type = oid_object_info(the_repository, oid, &size);
if (type == OBJ_BAD) {
cgit_print_error_page(404, "Not found",
"Bad object name: %s", oid_to_hex(oid));
return;
}
buf = read_object_file(oid, &type, &size);
if (!buf) {
cgit_print_error_page(500, "Internal server error",
"Error reading object %s", oid_to_hex(oid));
return;
}
is_binary = buffer_is_binary(buf, size);
cgit_set_title_from_path(path);
cgit_print_layout_start();
htmlf("blob: %s (", oid_to_hex(oid));
cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
rev, path);
if (ctx.repo->enable_blame && !is_binary) {
html(") (");
cgit_blame_link("blame", NULL, NULL, ctx.qry.head,
rev, path);
}
html(")\n");
if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
size / 1024, ctx.cfg.max_blob_size);
return;
}
if (is_binary)
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, 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(the_repository, &tree_ctx.oid);
if (!tree)
return;
free(tree_ctx.name);
tree_ctx.name = NULL;
tree_ctx.count = 0;
read_tree(the_repository, tree, &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, void *cbdata)
{
struct walk_tree_context *walk_tree_ctx = cbdata;
char *name;
struct strbuf fullpath = STRBUF_INIT;
struct strbuf linkpath = STRBUF_INIT;
struct strbuf class = STRBUF_INIT;
enum object_type type;
unsigned long size = 0;
char *buf;
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) {
htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
name,
oid_to_hex(oid));
goto cleanup;
}
}
html("<tr><td class='ls-mode'>");
cgit_print_filemode(mode);
html("</td><td>");
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 (S_ISLNK(mode)) {
html(" -> ");
buf = read_object_file(oid, &type, &size);
if (!buf) {
htmlf("Error reading object: %s", oid_to_hex(oid));
goto cleanup;
}
strbuf_addbuf(&linkpath, &fullpath);
strbuf_addf(&linkpath, "/../%s", buf);
strbuf_normalize_path(&linkpath);
cgit_tree_link(buf, NULL, class.buf, ctx.qry.head,
walk_tree_ctx->curr_rev, linkpath.buf);
free(buf);
strbuf_release(&linkpath);
}
htmlf("</td><td class='ls-size'>%li</td>", size);
html("<td>");
cgit_log_link("log", NULL, "button", ctx.qry.head,
walk_tree_ctx->curr_rev, fullpath.buf, 0, NULL, NULL,
ctx.qry.showmsg, 0);
if (ctx.repo->max_stats) {
html(" ");
cgit_stats_link("stats", NULL, "button", ctx.qry.head,
fullpath.buf);
}
if (!S_ISGITLINK(mode)) {
html(" ");
cgit_plain_link("plain", NULL, "button", ctx.qry.head,
walk_tree_ctx->curr_rev, fullpath.buf);
}
if (!S_ISDIR(mode) && ctx.repo->enable_blame) {
html(" ");
cgit_blame_link("blame", NULL, "button", ctx.qry.head,
walk_tree_ctx->curr_rev, fullpath.buf);
}
html("</td></tr>\n");
cleanup:
free(name);
strbuf_release(&fullpath);
strbuf_release(&class);
return 0;
}
static void ls_head(void)
{
cgit_print_layout_start();
html("<table summary='tree listing' 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");
}
static void ls_tail(void)
{
html("</table>\n");
cgit_print_layout_end();
}
static void ls_tree(const struct object_id *oid, const 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_print_error_page(404, "Not found",
"Not a tree object: %s", oid_to_hex(oid));
return;
}
ls_head();
read_tree(the_repository, tree, &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, 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, 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_print_error_page(404, "Not found",
"Invalid revision name: %s", rev);
return;
}
commit = lookup_commit_reference(the_repository, &oid);
if (!commit || parse_commit(commit)) {
cgit_print_error_page(404, "Not found",
"Invalid commit reference: %s", rev);
return;
}
walk_tree_ctx.curr_rev = xstrdup(rev);
if (path == NULL) {
ls_tree(get_commit_tree_oid(commit), NULL, &walk_tree_ctx);
goto cleanup;
}
read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
&paths, walk_tree, &walk_tree_ctx);
if (walk_tree_ctx.state == 1)
ls_tail();
else if (walk_tree_ctx.state == 2)
cgit_print_layout_end();
else
cgit_print_error_page(404, "Not found", "Path not found");
cleanup:
free(walk_tree_ctx.curr_rev);
}