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Add command dispatcher

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This simplifies the code in cgit.c and makes it easier to extend cgit with
new pages/commands.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
This commit is contained in:
Lars Hjemli
2008-03-24 01:09:39 +01:00
parent b608e88adb
commit e0e4478e7b
7 changed files with 172 additions and 113 deletions
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136
cgit.c
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@ -81,111 +81,84 @@ char *find_default_branch(struct cgit_repo *repo)
return info.first_ref;
}
static void cgit_print_repo_page()
static int prepare_repo_cmd(struct cgit_context *ctx)
{
char *tmp;
int show_search;
unsigned char sha1[20];
int nongit = 0;
setenv("GIT_DIR", ctx.repo->path, 1);
setenv("GIT_DIR", ctx->repo->path, 1);
setup_git_directory_gently(&nongit);
if (nongit) {
ctx.page.title = fmt("%s - %s", ctx.cfg.root_title,
"config error");
tmp = fmt("Not a git repository: '%s'", ctx.repo->path);
ctx.repo = NULL;
cgit_print_http_headers(&ctx);
cgit_print_docstart(&ctx);
cgit_print_pageheader(&ctx);
ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
"config error");
tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
ctx->repo = NULL;
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error(tmp);
cgit_print_docend();
return;
return 1;
}
ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
if (!ctx->qry.head) {
ctx->qry.head = xstrdup(find_default_branch(ctx->repo));
ctx->repo->defbranch = ctx->qry.head;
}
ctx.page.title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc);
show_search = 0;
if (!ctx.qry.head) {
ctx.qry.head = xstrdup(find_default_branch(ctx.repo));
ctx.repo->defbranch = ctx.qry.head;
}
if (!ctx.qry.head) {
cgit_print_http_headers(&ctx);
cgit_print_docstart(&ctx);
cgit_print_pageheader(&ctx);
if (!ctx->qry.head) {
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error("Repository seems to be empty");
cgit_print_docend();
return;
return 1;
}
if (get_sha1(ctx.qry.head, sha1)) {
tmp = xstrdup(ctx.qry.head);
ctx.qry.head = ctx.repo->defbranch;
cgit_print_http_headers(&ctx);
cgit_print_docstart(&ctx);
cgit_print_pageheader(&ctx);
if (get_sha1(ctx->qry.head, sha1)) {
tmp = xstrdup(ctx->qry.head);
ctx->qry.head = ctx->repo->defbranch;
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error(fmt("Invalid branch: %s", tmp));
cgit_print_docend();
return;
return 1;
}
return 0;
}
if ((cgit_cmd == CMD_SNAPSHOT) && ctx.repo->snapshots) {
cgit_print_snapshot(ctx.qry.head, ctx.qry.sha1,
cgit_repobasename(ctx.repo->url),
ctx.qry.path,
ctx.repo->snapshots );
return;
}
static void process_request(struct cgit_context *ctx)
{
struct cgit_cmd *cmd;
if (cgit_cmd == CMD_PATCH) {
cgit_print_patch(ctx.qry.sha1);
return;
}
if (cgit_cmd == CMD_BLOB) {
cgit_print_blob(ctx.qry.sha1, ctx.qry.path);
return;
}
show_search = (cgit_cmd == CMD_LOG);
cgit_print_http_headers(&ctx);
cgit_print_docstart(&ctx);
if (!cgit_cmd) {
cgit_print_pageheader(&ctx);
cgit_print_summary();
cmd = cgit_get_cmd(ctx);
if (!cmd) {
ctx->page.title = "cgit error";
ctx->repo = NULL;
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
cgit_print_error("Invalid request");
cgit_print_docend();
return;
}
cgit_print_pageheader(&ctx);
if (cmd->want_repo && prepare_repo_cmd(ctx))
return;
switch(cgit_cmd) {
case CMD_LOG:
cgit_print_log(ctx.qry.sha1, ctx.qry.ofs,
ctx.cfg.max_commit_count, ctx.qry.grep, ctx.qry.search,
ctx.qry.path, 1);
break;
case CMD_TREE:
cgit_print_tree(ctx.qry.sha1, ctx.qry.path);
break;
case CMD_COMMIT:
cgit_print_commit(ctx.qry.sha1);
break;
case CMD_REFS:
cgit_print_refs();
break;
case CMD_TAG:
cgit_print_tag(ctx.qry.sha1);
break;
case CMD_DIFF:
cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path);
break;
default:
cgit_print_error("Invalid request");
if (cmd->want_layout) {
cgit_print_http_headers(ctx);
cgit_print_docstart(ctx);
cgit_print_pageheader(ctx);
}
cgit_print_docend();
cmd->fn(ctx);
if (cmd->want_layout)
cgit_print_docend();
}
static long ttl_seconds(long ttl)
@ -209,10 +182,7 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
ctx.page.modified = time(NULL);
ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl);
if (ctx.repo)
cgit_print_repo_page();
else
cgit_print_repolist();
process_request(&ctx);
if (use_cache) {
chk_zero(close(STDOUT_FILENO), "Close redirected STDOUT");