diff options
| -rw-r--r-- | src/simplewiki_main.c | 67 |
1 files changed, 47 insertions, 20 deletions
diff --git a/src/simplewiki_main.c b/src/simplewiki_main.c index 5c04467..089d129 100644 --- a/src/simplewiki_main.c +++ b/src/simplewiki_main.c @@ -6,12 +6,15 @@ // #include <assert.h> #include <errno.h> // errno, EEXIST #include <git2.h> // git_* +#include <unistd.h> // link #include <stdbool.h> // false #include <stdio.h> #include <stdlib.h> // EXIT_SUCCESS #include <sys/stat.h> // mkdir #include <sys/types.h> // mode_t +#define REF "refs/heads/master" + void xmkdir(const char *path, mode_t mode, bool exist_ok) { if (mkdir(path, mode) < 0) { if (exist_ok && errno == EEXIST) { @@ -22,6 +25,13 @@ void xmkdir(const char *path, mode_t mode, bool exist_ok) { } } +void xsymlink(const char *source_path, const char *target_path) +{ + if (symlink(source_path, target_path) < 0) { + die_errno("failed to link '%s' => '%s'", target_path, source_path); + } +} + void process_other_file(const char *path, const char *source, size_t source_len) { FILE *out = fopen(path, "w"); printf("Copying: %s\n", path); @@ -138,30 +148,47 @@ int main(int argc, char *argv[]) die_git("open repository"); } - // Find HEAD. - struct git_object *head; - const struct git_oid *head_id; - if (git_revparse_single(&head, repo, "HEAD") < 0) { - die_git("parse HEAD"); - } - head_id = git_object_id(head); - git_object_free(head); - - // Get a handle to the tree at head. - struct git_commit *commit; - if (git_commit_lookup(&commit, repo, head_id) < 0) { - die_git("look up head commit"); - } - struct git_tree *tree; - if (git_commit_tree(&tree, commit) < 0) { - die_git("get tree for commit %s", git_oid_tostr_s(git_commit_id(commit))); - } + // Create a revision walker to iterate commits on the main branch. + git_revwalk *walker = NULL; + git_revwalk_new(&walker, repo); + git_revwalk_push_ref(walker, REF); // Create the initial output directory. xmkdir(out_path, 0755, true); - struct arena a = arena_create(1024); - list_tree(&a, repo, tree, out_path); + struct arena a = arena_create(2048); + git_oid commit_oid; + while (git_revwalk_next(&commit_oid, walker) == 0) { + const char *commit_sha = git_oid_tostr_s(&commit_oid); + + git_commit *commit = NULL; + if (git_commit_lookup(&commit, repo, &commit_oid) < 0) { + die_git("find commit %s", commit_sha); + } + + struct git_tree *tree; + if (git_commit_tree(&tree, commit) < 0) { + die_git("get tree for commit %s", commit_sha); + } + + const char *prefix = joinpath(&a, out_path, commit_sha); + xmkdir(prefix, 0755, true); + list_tree(&a, repo, tree, prefix); + + a.used = 0; // reset arena after each iteration + git_commit_free(commit); + git_tree_free(tree); + } + + // Create a symbolic link to the latest commit. + git_oid latest_commit; + if (git_reference_name_to_id(&latest_commit, repo, REF) < 0) { + die_git("Failed to resolve " REF " to commit"); + } + const char *source = git_oid_tostr_s(&latest_commit); + const char *target = joinpath(&a, out_path, "latest"); + xsymlink(source, target); + #ifndef NDEBUG arena_destroy(&a); #endif |