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/* ui-wiki.c: functions for wiki output
*
* Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
* Copyright (C) 2025 Freya Murphy <freya@freyacat.org>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#define USE_THE_REPOSITORY_VARIABLE
#include "cgit.h"
#include "ui-wiki.h"
#include "html.h"
#include "ui-shared.h"
#define WIKI_PATH ".wiki"
struct walk_wiki_context {
char *curr_rev;
int state;
int index;
};
static void print_page(const struct object_id *oid, const char *path, const char *basename, const char *rev)
{
enum object_type type;
unsigned long size;
char *buf;
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 = repo_read_object_file(the_repository, oid, &type, &size);
if (!buf) {
cgit_print_error_page(500, "Internal server error",
"Error reading object %s", oid_to_hex(oid));
return;
}
html("<div id='summary'>");
cgit_open_filter(ctx.repo->about_filter, basename);
html_raw(buf, size);
cgit_close_filter(ctx.repo->about_filter);
html("</div>");
free(buf);
}
static int ls_wiki(const struct object_id *oid, const char *pathname, struct walk_wiki_context *walk_wiki_ctx)
{
char *name, *link, *ptr;
if (isdigit(*pathname)) {
long index = strtol(pathname, &ptr, 10);
if (ptr && *ptr == '-') {
pathname = ptr + 1;
walk_wiki_ctx->index = index;
}
}
name = xstrdup(pathname);
ptr = strrchr(name, '.');
if (ptr)
*ptr = '\0';
link = xstrdup(name);
for (ptr = name; *ptr; ptr++) {
if (*ptr == '-')
*ptr = ' ';
}
for (ptr = link; *ptr; ptr++)
*ptr = tolower(*ptr);
html("<tr><td class='ls-index'>");
htmlf("%d", walk_wiki_ctx->index);
html("</td><td class>");
cgit_wiki_link(name, NULL, "ls-link", ctx.qry.head, walk_wiki_ctx->curr_rev, link);
html("</td></tr>\n");
walk_wiki_ctx->index++;
free(name);
free(link);
return 0;
}
static void ls_head(void)
{
cgit_print_layout_start();
html("<table summary='wiki listing' class='list'>\n");
html("<tr class='nohover'>");
html("<th class='left'>Index</th>");
html("<th class='left'>Title</th>");
html("<th/>");
html("</tr>\n");
}
static void ls_tail(void)
{
html("</table>\n");
}
static int walk_wiki(const struct object_id *oid, struct strbuf *base,
const char *pathname, unsigned mode, void *cbdata)
{
struct walk_wiki_context *walk_wiki_ctx = cbdata;
if (!strcmp(pathname, WIKI_PATH))
return READ_TREE_RECURSIVE;
if (walk_wiki_ctx->state < 2) {
if (walk_wiki_ctx->state == 0) {
walk_wiki_ctx->state = 1;
ls_head();
}
ls_wiki(oid, pathname, walk_wiki_ctx);
} else if (walk_wiki_ctx->state == 2) {
const char *name;
name = pathname;
if (isdigit(*name)) {
char *ptr;
strtol(name, &ptr, 10);
if (ptr && *ptr == '-')
name = ptr + 1;
}
if (!strncasecmp(name, ctx.qry.path, strlen(ctx.qry.path))) {
struct strbuf buffer = STRBUF_INIT;
strbuf_addbuf(&buffer, base);
strbuf_addstr(&buffer, pathname);
walk_wiki_ctx->state = 3;
print_page(oid, pathname, buffer.buf, walk_wiki_ctx->curr_rev);
strbuf_release(&buffer);
}
}
return 0;
}
/*
* Show repo wiki
* rev: the commit pointing at the root ui object
* path: partial name of a wiki md file
*/
void cgit_print_wiki(const char *rev)
{
struct object_id oid;
struct commit *commit;
struct pathspec_item path_items = {
.match = WIKI_PATH,
.len = sizeof(WIKI_PATH) - 1,
};
struct pathspec paths = {
.nr = 1,
.items = &path_items
};
struct walk_wiki_context walk_wiki_ctx = {
.state = 0,
.index = 1
};
if (!rev)
rev = ctx.qry.head;
if (repo_get_oid(the_repository, rev, &oid)) {
cgit_print_error_page(404, "Not found",
"Invalid revision name: %s", rev);
return;
}
commit = lookup_commit_reference(the_repository, &oid);
if (!commit || repo_parse_commit(the_repository, commit)) {
cgit_print_error_page(404, "Not found",
"Invalid commit reference: %s", rev);
return;
}
walk_wiki_ctx.curr_rev = xstrdup(rev);
// print wiki pages
read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
&paths, walk_wiki, &walk_wiki_ctx);
if (walk_wiki_ctx.state == 0) {
cgit_print_error_page(404, "Not found", "Wiki not found");
goto cleanup;
}
ls_tail();
// print active wiki page
if (ctx.qry.path) {
html("<hr>\n");
walk_wiki_ctx.state = 2;
read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
&paths, walk_wiki, &walk_wiki_ctx);
if (walk_wiki_ctx.state == 2)
cgit_print_error("Wiki page not found");
}
cgit_print_layout_end();
cleanup:
free(walk_wiki_ctx.curr_rev);
}
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