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authorLars Hjemli <hjemli@gmail.com>2008-03-24 01:09:39 +0100
committerLars Hjemli <hjemli@gmail.com>2008-03-24 01:43:48 +0100
commite0e4478e7b4812f822d60a13a33525f8e529e1e8 (patch)
tree577c3927deb9b122f940b69ca7db66afe2422814
parentb608e88adb6f77328288afb6dd0eddf674fc9b5b (diff)
Add command dispatcher
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>
-rw-r--r--Makefile2
-rw-r--r--cgit.c130
-rw-r--r--cgit.h14
-rw-r--r--cmd.c101
-rw-r--r--cmd.h15
-rw-r--r--parsing.c4
-rw-r--r--shared.c13
7 files changed, 169 insertions, 110 deletions
diff --git a/Makefile b/Makefile
index 7102908..d9ff7d8 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ GIT_URL = http://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.bz2
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-tree.o ui-commit.o ui-diff.o \
- ui-snapshot.o ui-blob.o ui-tag.o ui-refs.o ui-patch.o
+ ui-snapshot.o ui-blob.o ui-tag.o ui-refs.o ui-patch.o cmd.o
ifdef NEEDS_LIBICONV
diff --git a/cgit.c b/cgit.c
index a83f0be..79e0e43 100644
--- a/cgit.c
+++ b/cgit.c
@@ -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);
- 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) {
+ 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 );
+static void process_request(struct cgit_context *ctx)
+{
+ struct cgit_cmd *cmd;
+
+ 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;
}
- if (cgit_cmd == CMD_PATCH) {
- cgit_print_patch(ctx.qry.sha1);
+ if (cmd->want_repo && prepare_repo_cmd(ctx))
return;
- }
- if (cgit_cmd == CMD_BLOB) {
- cgit_print_blob(ctx.qry.sha1, ctx.qry.path);
- return;
+ if (cmd->want_layout) {
+ cgit_print_http_headers(ctx);
+ cgit_print_docstart(ctx);
+ cgit_print_pageheader(ctx);
}
- 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();
- cgit_print_docend();
- return;
- }
+ cmd->fn(ctx);
- cgit_print_pageheader(&ctx);
-
- 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");
- }
- cgit_print_docend();
+ 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");
diff --git a/cgit.h b/cgit.h
index 40e2d40..295441b 100644
--- a/cgit.h
+++ b/cgit.h
@@ -20,19 +20,6 @@
/*
- * The valid cgit repo-commands
- */
-#define CMD_LOG 1
-#define CMD_COMMIT 2
-#define CMD_DIFF 3
-#define CMD_TREE 4
-#define CMD_BLOB 5
-#define CMD_SNAPSHOT 6
-#define CMD_TAG 7
-#define CMD_REFS 8
-#define CMD_PATCH 9
-
-/*
* Dateformats used on misc. pages
*/
#define FMT_LONGDATE "%Y-%m-%d %H:%M:%S"
@@ -197,7 +184,6 @@ extern struct cgit_context ctx;
extern int cgit_cmd;
extern void cgit_prepare_context(struct cgit_context *ctx);
-extern int cgit_get_cmd_index(const char *cmd);
extern struct cgit_repo *cgit_get_repoinfo(const char *url);
extern void cgit_global_config_cb(const char *name, const char *value);
extern void cgit_repo_config_cb(const char *name, const char *value);
diff --git a/cmd.c b/cmd.c
new file mode 100644
index 0000000..489a11c
--- /dev/null
+++ b/cmd.c
@@ -0,0 +1,101 @@
+/* cmd.c: the cgit command dispatcher
+ *
+ * Copyright (C) 2008 Lars Hjemli
+ *
+ * Licensed under GNU General Public License v2
+ * (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+#include "cmd.h"
+
+static void blob_fn(struct cgit_context *ctx)
+{
+ cgit_print_blob(ctx->qry.sha1, ctx->qry.path);
+}
+
+static void commit_fn(struct cgit_context *ctx)
+{
+ cgit_print_commit(ctx->qry.sha1);
+}
+
+static void diff_fn(struct cgit_context *ctx)
+{
+ cgit_print_diff(ctx->qry.sha1, ctx->qry.sha2, ctx->qry.path);
+}
+
+static void repolist_fn(struct cgit_context *ctx)
+{
+ cgit_print_repolist();
+}
+
+static void log_fn(struct cgit_context *ctx)
+{
+ cgit_print_log(ctx->qry.sha1, ctx->qry.ofs, ctx->cfg.max_commit_count,
+ ctx->qry.grep, ctx->qry.search, ctx->qry.path, 1);
+}
+
+static void patch_fn(struct cgit_context *ctx)
+{
+ cgit_print_patch(ctx->qry.sha1);
+}
+
+static void refs_fn(struct cgit_context *ctx)
+{
+ cgit_print_refs();
+}
+
+static void snapshot_fn(struct cgit_context *ctx)
+{
+ cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1,
+ cgit_repobasename(ctx->repo->url), ctx->qry.path,
+ ctx->repo->snapshots);
+}
+
+static void summary_fn(struct cgit_context *ctx)
+{
+ cgit_print_summary();
+}
+
+static void tag_fn(struct cgit_context *ctx)
+{
+ cgit_print_tag(ctx->qry.sha1);
+}
+
+static void tree_fn(struct cgit_context *ctx)
+{
+ cgit_print_tree(ctx->qry.sha1, ctx->qry.path);
+}
+
+#define def_cmd(name, want_repo, want_layout) \
+ {#name, name##_fn, want_repo, want_layout}
+
+struct cgit_cmd *cgit_get_cmd(struct cgit_context *ctx)
+{
+ static struct cgit_cmd cmds[] = {
+ def_cmd(blob, 1, 0),
+ def_cmd(commit, 1, 1),
+ def_cmd(diff, 1, 1),
+ def_cmd(log, 1, 1),
+ def_cmd(patch, 1, 0),
+ def_cmd(refs, 1, 1),
+ def_cmd(repolist, 0, 0),
+ def_cmd(snapshot, 1, 0),
+ def_cmd(summary, 1, 1),
+ def_cmd(tag, 1, 1),
+ def_cmd(tree, 1, 1),
+ };
+ int i;
+
+ if (ctx->qry.page == NULL) {
+ if (ctx->repo)
+ ctx->qry.page = "summary";
+ else
+ ctx->qry.page = "repolist";
+ }
+
+ for(i = 0; i < sizeof(cmds)/sizeof(*cmds); i++)
+ if (!strcmp(ctx->qry.page, cmds[i].name))
+ return &cmds[i];
+ return NULL;
+}
diff --git a/cmd.h b/cmd.h
new file mode 100644
index 0000000..ec9e691
--- /dev/null
+++ b/cmd.h
@@ -0,0 +1,15 @@
+#ifndef CMD_H
+#define CMD_H
+
+typedef void (*cgit_cmd_fn)(struct cgit_context *ctx);
+
+struct cgit_cmd {
+ const char *name;
+ cgit_cmd_fn fn;
+ unsigned int want_repo:1,
+ want_layout:1;
+};
+
+extern struct cgit_cmd *cgit_get_cmd(struct cgit_context *ctx);
+
+#endif /* CMD_H */
diff --git a/parsing.c b/parsing.c
index 027f06b..8dce488 100644
--- a/parsing.c
+++ b/parsing.c
@@ -170,8 +170,8 @@ void cgit_parse_url(const char *url)
if (p[1])
ctx.qry.path = trim_end(p + 1, '/');
}
- cgit_cmd = cgit_get_cmd_index(cmd + 1);
- ctx.qry.page = xstrdup(cmd + 1);
+ if (cmd[1])
+ ctx.qry.page = xstrdup(cmd + 1);
return;
}
}
diff --git a/shared.c b/shared.c
index 539d533..67eb67b 100644
--- a/shared.c
+++ b/shared.c
@@ -40,18 +40,6 @@ void cgit_prepare_context(struct cgit_context *ctx)
ctx->page.filename = NULL;
}
-int cgit_get_cmd_index(const char *cmd)
-{
- static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
- "snapshot", "tag", "refs", "patch", NULL};
- int i;
-
- for(i = 0; cmds[i]; i++)
- if (!strcmp(cmd, cmds[i]))
- return i + 1;
- return 0;
-}
-
int chk_zero(int result, char *msg)
{
if (result != 0)
@@ -216,7 +204,6 @@ void cgit_querystring_cb(const char *name, const char *value)
ctx.repo = cgit_get_repoinfo(value);
} else if (!strcmp(name, "p")) {
ctx.qry.page = xstrdup(value);
- cgit_cmd = cgit_get_cmd_index(value);
} else if (!strcmp(name, "url")) {
cgit_parse_url(value);
} else if (!strcmp(name, "qt")) {