From e0e4478e7b4812f822d60a13a33525f8e529e1e8 Mon Sep 17 00:00:00 2001 From: Lars Hjemli Date: Mon, 24 Mar 2008 01:09:39 +0100 Subject: 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 --- Makefile | 2 +- cgit.c | 130 ++++++++++++++++++++++++-------------------------------------- cgit.h | 14 ------- cmd.c | 101 ++++++++++++++++++++++++++++++++++++++++++++++++ cmd.h | 15 ++++++++ parsing.c | 4 +- shared.c | 13 ------- 7 files changed, 169 insertions(+), 110 deletions(-) create mode 100644 cmd.c create mode 100644 cmd.h 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 @@ -19,19 +19,6 @@ #include -/* - * 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 */ @@ -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")) { -- cgit 1.4.1