From ef3f1ef854936fc254da5375f69f58dad4e69ca6 Mon Sep 17 00:00:00 2001 From: Hiltjo Posthuma Date: Sat, 26 Dec 2015 21:07:47 +0100 Subject: [PATCH] add stagit.c --- stagit.c | 852 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 852 insertions(+) create mode 100644 stagit.c diff --git a/stagit.c b/stagit.c new file mode 100644 index 0000000..9391de6 --- /dev/null +++ b/stagit.c @@ -0,0 +1,852 @@ +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "compat.h" +#include "config.h" + +struct commitinfo { + const git_oid *id; + + char oid[GIT_OID_HEXSZ + 1]; + char parentoid[GIT_OID_HEXSZ + 1]; + + const git_signature *author; + const char *summary; + const char *msg; + + git_diff_stats *stats; + git_diff *diff; + git_commit *commit; + git_commit *parent; + git_tree *commit_tree; + git_tree *parent_tree; + + size_t addcount; + size_t delcount; + size_t filecount; +}; + +static git_repository *repo; + +static const char *relpath = ""; +static const char *repodir; + +static char name[255]; +static char description[255]; +static char cloneurl[1024]; +static int hasreadme, haslicense; + +void +commitinfo_free(struct commitinfo *ci) +{ + if (!ci) + return; + + git_diff_stats_free(ci->stats); + git_diff_free(ci->diff); + git_tree_free(ci->commit_tree); + git_tree_free(ci->parent_tree); + git_commit_free(ci->commit); +} + +struct commitinfo * +commitinfo_getbyoid(const git_oid *id) +{ + struct commitinfo *ci; + git_diff_options opts; + int error; + + if (!(ci = calloc(1, sizeof(struct commitinfo)))) + err(1, "calloc"); + + ci->id = id; + if (git_commit_lookup(&(ci->commit), repo, id)) + goto err; + + git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit)); + git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0)); + + ci->author = git_commit_author(ci->commit); + ci->summary = git_commit_summary(ci->commit); + ci->msg = git_commit_message(ci->commit); + + if ((error = git_commit_tree(&(ci->commit_tree), ci->commit))) + goto err; + if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) { + if ((error = git_commit_tree(&(ci->parent_tree), ci->parent))) + goto err; + } else { + ci->parent = NULL; + ci->parent_tree = NULL; + } + + git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION); + opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH; + if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts))) + goto err; + if (git_diff_get_stats(&(ci->stats), ci->diff)) + goto err; + + ci->addcount = git_diff_stats_insertions(ci->stats); + ci->delcount = git_diff_stats_deletions(ci->stats); + ci->filecount = git_diff_stats_files_changed(ci->stats); + + return ci; + +err: + commitinfo_free(ci); + free(ci); + + return NULL; +} + +FILE * +efopen(const char *name, const char *flags) +{ + FILE *fp; + + if (!(fp = fopen(name, flags))) + err(1, "fopen"); + + return fp; +} + +/* Escape characters below as HTML 2.0 / XML 1.0. */ +void +xmlencode(FILE *fp, const char *s, size_t len) +{ + size_t i; + + for (i = 0; *s && i < len; s++, i++) { + switch(*s) { + case '<': fputs("<", fp); break; + case '>': fputs(">", fp); break; + case '\'': fputs("'", fp); break; + case '&': fputs("&", fp); break; + case '"': fputs(""", fp); break; + default: fputc(*s, fp); + } + } +} + +/* Some implementations of dirname(3) return a pointer to a static + * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX). + * This is a wrapper function that is compatible with both versions. + * The program will error out if dirname(3) failed, this can only happen + * with the OpenBSD version. */ +char * +xdirname(const char *path) +{ + char *p, *b; + + if (!(p = strdup(path))) + err(1, "strdup"); + if (!(b = dirname(p))) + err(1, "basename"); + if (!(b = strdup(b))) + err(1, "strdup"); + free(p); + + return b; +} + +/* Some implementations of basename(3) return a pointer to a static + * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX). + * This is a wrapper function that is compatible with both versions. + * The program will error out if basename(3) failed, this can only happen + * with the OpenBSD version. */ +char * +xbasename(const char *path) +{ + char *p, *b; + + if (!(p = strdup(path))) + err(1, "strdup"); + if (!(b = basename(p))) + err(1, "basename"); + if (!(b = strdup(b))) + err(1, "strdup"); + free(p); + + return b; +} + +int +mkdirp(const char *path) +{ + char tmp[PATH_MAX], *p; + + strlcpy(tmp, path, sizeof(tmp)); + for (p = tmp + (tmp[0] == '/'); *p; p++) { + if (*p != '/') + continue; + *p = '\0'; + if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST) + return -1; + *p = '/'; + } + if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST) + return -1; + return 0; +} + +void +printtimeformat(FILE *fp, const git_time *intime, const char *fmt) +{ + struct tm *intm; + time_t t; + char out[32]; + + t = (time_t) intime->time + (intime->offset * 60); + intm = gmtime(&t); + strftime(out, sizeof(out), fmt, intm); + fputs(out, fp); +} + +void +printtimez(FILE *fp, const git_time *intime) +{ + printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ"); +} + +void +printtime(FILE *fp, const git_time *intime) +{ + printtimeformat(fp, intime, "%a %b %e %T %Y"); +} + +void +printtimeshort(FILE *fp, const git_time *intime) +{ + printtimeformat(fp, intime, "%Y-%m-%d %H:%M"); +} + +int +writeheader(FILE *fp) +{ + fputs("" + "\n\n" + "\n" + "\n", fp); + xmlencode(fp, name, strlen(name)); + if (description[0]) + fputs(" - ", fp); + xmlencode(fp, description, strlen(description)); + fprintf(fp, "\n\n", relpath); + fprintf(fp, "\n", + name, relpath); + fprintf(fp, "\n", relpath); + fputs("\n\n", fp); + if (cloneurl[0]) { + fputs("", fp); + } + fputs("
", fp); + fprintf(fp, "\"\"", + relpath, relpath); + fputs("

", fp); + xmlencode(fp, name, strlen(name)); + fputs("

", fp); + xmlencode(fp, description, strlen(description)); + fputs("
git clone ", fp); + xmlencode(fp, cloneurl, strlen(cloneurl)); + fputs("
\n", fp); + fprintf(fp, "Log | ", relpath); + fprintf(fp, "Files", relpath); + if (hasreadme) + fprintf(fp, " | README", relpath); + if (haslicense) + fprintf(fp, " | LICENSE", relpath); + fputs("
\n
\n", fp); + + return 0; +} + +int +writefooter(FILE *fp) +{ + return !fputs("
\n", fp); +} + +void +writeblobhtml(FILE *fp, const git_blob *blob) +{ + off_t i = 0; + size_t n = 1; + char *nfmt = "%d\n"; + const char *s = git_blob_rawcontent(blob); + git_off_t len = git_blob_rawsize(blob); + + fputs("
\n", fp);
+
+	if (len) {
+		fprintf(fp, nfmt, n, n, n);
+		while (i < len - 1) {
+			if (s[i] == '\n') {
+				n++;
+				fprintf(fp, nfmt, n, n, n);
+			}
+			i++;
+		}
+	}
+
+	fputs("
\n", fp);
+	xmlencode(fp, s, (size_t)len);
+	fputs("
\n", fp); +} + +void +printcommit(FILE *fp, struct commitinfo *ci) +{ + fprintf(fp, "commit %s\n", + relpath, ci->oid, ci->oid); + + if (ci->parentoid[0]) + fprintf(fp, "parent %s\n", + relpath, ci->parentoid, ci->parentoid); + +#if 0 + if ((count = (int)git_commit_parentcount(commit)) > 1) { + fprintf(fp, "Merge:"); + for (i = 0; i < count; i++) { + git_oid_tostr(buf, 8, git_commit_parent_id(commit, i)); + fprintf(fp, " %s", + relpath, buf, buf); + } + fputc('\n', fp); + } +#endif + if (ci->author) { + fprintf(fp, "Author: "); + xmlencode(fp, ci->author->name, strlen(ci->author->name)); + fprintf(fp, " <author->email, strlen(ci->author->email)); + fputs("\">", fp); + xmlencode(fp, ci->author->email, strlen(ci->author->email)); + fputs(">\nDate: ", fp); + printtime(fp, &(ci->author->when)); + fputc('\n', fp); + } + fputc('\n', fp); + + if (ci->msg) + xmlencode(fp, ci->msg, strlen(ci->msg)); + + fputc('\n', fp); +} + +void +printshowfile(struct commitinfo *ci) +{ + const git_diff_delta *delta; + const git_diff_hunk *hunk; + const git_diff_line *line; + git_patch *patch; + git_buf statsbuf; + size_t ndeltas, nhunks, nhunklines; + FILE *fp; + size_t i, j, k; + char path[PATH_MAX]; + + snprintf(path, sizeof(path), "commit/%s.html", ci->oid); + /* check if file exists if so skip it */ + if (!access(path, F_OK)) + return; + + fp = efopen(path, "w"); + writeheader(fp); + fputs("
\n", fp);
+	printcommit(fp, ci);
+
+	memset(&statsbuf, 0, sizeof(statsbuf));
+
+	/* diff stat */
+	if (ci->stats) {
+		if (!git_diff_stats_to_buf(&statsbuf, ci->stats,
+		    GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
+			if (statsbuf.ptr && statsbuf.ptr[0]) {
+				fprintf(fp, "Diffstat:\n");
+				fputs(statsbuf.ptr, fp);
+			}
+		}
+	}
+
+	fputs("
", fp);
+
+	ndeltas = git_diff_num_deltas(ci->diff);
+	for (i = 0; i < ndeltas; i++) {
+		if (git_patch_from_diff(&patch, ci->diff, i)) {
+			git_patch_free(patch);
+			break;
+		}
+
+		delta = git_patch_get_delta(patch);
+		fprintf(fp, "diff --git a/%s b/%s\n",
+			relpath, delta->old_file.path, delta->old_file.path,
+			relpath, delta->new_file.path, delta->new_file.path);
+
+		/* check binary data */
+		if (delta->flags & GIT_DIFF_FLAG_BINARY) {
+			fputs("Binary files differ\n", fp);
+			git_patch_free(patch);
+			continue;
+		}
+
+		nhunks = git_patch_num_hunks(patch);
+		for (j = 0; j < nhunks; j++) {
+			if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
+				break;
+
+			fprintf(fp, "%s\n", hunk->header);
+
+			for (k = 0; ; k++) {
+				if (git_patch_get_line_in_hunk(&line, patch, j, k))
+					break;
+				if (line->old_lineno == -1)
+					fprintf(fp, "+",
+						j, k, j, k);
+				else if (line->new_lineno == -1)
+					fprintf(fp, "-",
+						j, k, j, k);
+				else
+					fputc(' ', fp);
+				xmlencode(fp, line->content, line->content_len);
+				if (line->old_lineno == -1 || line->new_lineno == -1)
+					fputs("", fp);
+			}
+		}
+		git_patch_free(patch);
+	}
+	git_buf_free(&statsbuf);
+
+	fputs( "
\n", fp); + writefooter(fp); + fclose(fp); + return; +} + +void +writelog(FILE *fp) +{ + struct commitinfo *ci; + git_revwalk *w = NULL; + git_oid id; + size_t len; + + mkdir("commit", 0755); + + git_revwalk_new(&w, repo); + git_revwalk_push_head(w); + git_revwalk_sorting(w, GIT_SORT_TIME); + git_revwalk_simplify_first_parent(w); + + fputs("\n" + "" + "\n\n", fp); + while (!git_revwalk_next(&id, w)) { + relpath = ""; + + if (!(ci = commitinfo_getbyoid(&id))) + break; + + fputs("\n", fp); + + relpath = "../"; + printshowfile(ci); + + commitinfo_free(ci); + } + fprintf(fp, "
AgeCommit messageAuthorFiles+-
", fp); + if (ci->author) + printtimeshort(fp, &(ci->author->when)); + fputs("", fp); + if (ci->summary) { + fprintf(fp, "", relpath, ci->oid); + if ((len = strlen(ci->summary)) > summarylen) { + xmlencode(fp, ci->summary, summarylen - 1); + fputs("…", fp); + } else { + xmlencode(fp, ci->summary, len); + } + fputs("", fp); + } + fputs("", fp); + if (ci->author) + xmlencode(fp, ci->author->name, strlen(ci->author->name)); + fputs("", fp); + fprintf(fp, "%zu", ci->filecount); + fputs("", fp); + fprintf(fp, "+%zu", ci->addcount); + fputs("", fp); + fprintf(fp, "-%zu", ci->delcount); + fputs("
"); + + git_revwalk_free(w); + relpath = ""; +} + +void +printcommitatom(FILE *fp, struct commitinfo *ci) +{ + fputs("\n", fp); + + fprintf(fp, "%s\n", ci->oid); + if (ci->author) { + fputs("", fp); + printtimez(fp, &(ci->author->when)); + fputs("\n", fp); + } + if (ci->summary) { + fputs("", fp); + xmlencode(fp, ci->summary, strlen(ci->summary)); + fputs("\n", fp); + } + + fputs("", fp); + fprintf(fp, "commit %s\n", ci->oid); + if (ci->parentoid[0]) + fprintf(fp, "parent %s\n", ci->parentoid); + +#if 0 + if ((count = (int)git_commit_parentcount(commit)) > 1) { + fprintf(fp, "Merge:"); + for (i = 0; i < count; i++) { + git_oid_tostr(buf, 8, git_commit_parent_id(commit, i)); + fprintf(fp, " %s", buf); + } + fputc('\n', fp); + } +#endif + + if (ci->author) { + fprintf(fp, "Author: "); + xmlencode(fp, ci->author->name, strlen(ci->author->name)); + fprintf(fp, " <"); + xmlencode(fp, ci->author->email, strlen(ci->author->email)); + fprintf(fp, ">\nDate: "); + printtime(fp, &(ci->author->when)); + } + fputc('\n', fp); + + if (ci->msg) + xmlencode(fp, ci->msg, strlen(ci->msg)); + fputs("\n\n", fp); + if (ci->author) { + fputs("", fp); + xmlencode(fp, ci->author->name, strlen(ci->author->name)); + fputs("\n", fp); + xmlencode(fp, ci->author->email, strlen(ci->author->email)); + fputs("\n\n", fp); + } + fputs("\n", fp); +} + +int +writeatom(FILE *fp) +{ + struct commitinfo *ci; + git_revwalk *w = NULL; + git_oid id; + size_t i, m = 100; /* max */ + + fputs("\n" + "\n", fp); + xmlencode(fp, name, strlen(name)); + fputs(", branch master\n", fp); + + xmlencode(fp, description, strlen(description)); + fputs("\n", fp); + + git_revwalk_new(&w, repo); + git_revwalk_push_head(w); + git_revwalk_sorting(w, GIT_SORT_TIME); + git_revwalk_simplify_first_parent(w); + + for (i = 0; i < m && !git_revwalk_next(&id, w); i++) { + if (!(ci = commitinfo_getbyoid(&id))) + break; + printcommitatom(fp, ci); + commitinfo_free(ci); + } + git_revwalk_free(w); + + fputs("", fp); + + return 0; +} + +int +writeblob(git_object *obj, const char *filename, git_off_t filesize) +{ + char fpath[PATH_MAX]; + char tmp[PATH_MAX] = ""; + char *d, *p; + FILE *fp; + + snprintf(fpath, sizeof(fpath), "file/%s.html", filename); + d = xdirname(fpath); + if (mkdirp(d)) { + free(d); + return 1; + } + free(d); + + p = fpath; + while (*p) { + if (*p == '/') + strlcat(tmp, "../", sizeof(tmp)); + p++; + } + relpath = tmp; + + fp = efopen(fpath, "w"); + writeheader(fp); + fputs("

", fp); + xmlencode(fp, filename, strlen(filename)); + fprintf(fp, " (%" PRIu32 "b)", filesize); + fputs("

", fp); + + if (git_blob_is_binary((git_blob *)obj)) { + fprintf(fp, "

Binary file

\n"); + } else { + writeblobhtml(fp, (git_blob *)obj); + if (ferror(fp)) + err(1, "fwrite"); + } + writefooter(fp); + fclose(fp); + + relpath = ""; + + return 0; +} + +const char * +filemode(git_filemode_t m) +{ + static char mode[11]; + + memset(mode, '-', sizeof(mode) - 1); + mode[10] = '\0'; + + if (S_ISREG(m)) + mode[0] = '-'; + else if (S_ISBLK(m)) + mode[0] = 'b'; + else if (S_ISCHR(m)) + mode[0] = 'c'; + else if (S_ISDIR(m)) + mode[0] = 'd'; + else if (S_ISFIFO(m)) + mode[0] = 'p'; + else if (S_ISLNK(m)) + mode[0] = 'l'; + else if (S_ISSOCK(m)) + mode[0] = 's'; + else + mode[0] = '?'; + + if (m & S_IRUSR) mode[1] = 'r'; + if (m & S_IWUSR) mode[2] = 'w'; + if (m & S_IXUSR) mode[3] = 'x'; + if (m & S_IRGRP) mode[4] = 'r'; + if (m & S_IWGRP) mode[5] = 'w'; + if (m & S_IXGRP) mode[6] = 'x'; + if (m & S_IROTH) mode[7] = 'r'; + if (m & S_IWOTH) mode[8] = 'w'; + if (m & S_IXOTH) mode[9] = 'x'; + + if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S'; + if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S'; + if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T'; + + return mode; +} + +int +writefilestree(FILE *fp, git_tree *tree, const char *path) +{ + const git_tree_entry *entry = NULL; + const char *filename; + char filepath[PATH_MAX]; + git_object *obj = NULL; + git_off_t filesize; + size_t count, i; + int ret; + + count = git_tree_entrycount(tree); + for (i = 0; i < count; i++) { + if (!(entry = git_tree_entry_byindex(tree, i))) + return -1; + + filename = git_tree_entry_name(entry); + if (git_tree_entry_to_object(&obj, repo, entry)) + return -1; + switch (git_object_type(obj)) { + case GIT_OBJ_BLOB: + break; + case GIT_OBJ_TREE: + ret = writefilestree(fp, (git_tree *)obj, filename); + git_object_free(obj); + if (ret) + return ret; + continue; + default: + git_object_free(obj); + continue; + } + if (path[0]) { + snprintf(filepath, sizeof(filepath), "%s/%s", path, filename); + filename = filepath; + } + + filesize = git_blob_rawsize((git_blob *)obj); + + fputs("", fp); + fprintf(fp, "%s", filemode(git_tree_entry_filemode(entry))); + fprintf(fp, "", fp); + xmlencode(fp, filename, strlen(filename)); + fputs("", fp); + fprintf(fp, "%" PRIu32, filesize); + fputs("\n", fp); + + writeblob(obj, filename, filesize); + } + + return 0; +} + +int +writefiles(FILE *fp) +{ + const git_oid *id; + git_tree *tree = NULL; + git_object *obj = NULL; + git_commit *commit = NULL; + + fputs("\n" + "" + "\n\n", fp); + + if (git_revparse_single(&obj, repo, "HEAD")) + return -1; + id = git_object_id(obj); + if (git_commit_lookup(&commit, repo, id)) + return -1; + if (git_commit_tree(&tree, commit)) { + git_commit_free(commit); + return -1; + } + git_commit_free(commit); + + writefilestree(fp, tree, ""); + + git_commit_free(commit); + git_tree_free(tree); + + fputs("
ModeNameSize
", fp); + + return 0; +} + +int +main(int argc, char *argv[]) +{ + git_object *obj = NULL; + const git_error *e = NULL; + FILE *fp, *fpread; + char path[PATH_MAX], *p; + int status; + + if (argc != 2) { + fprintf(stderr, "%s \n", argv[0]); + return 1; + } + repodir = argv[1]; + + git_libgit2_init(); + + if ((status = git_repository_open_ext(&repo, repodir, + GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) { + e = giterr_last(); + fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message); + return status; + } + + /* use directory name as name */ + p = xbasename(repodir); + snprintf(name, sizeof(name), "%s", p); + free(p); + + /* read description or .git/description */ + snprintf(path, sizeof(path), "%s%s%s", + repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description"); + if (!(fpread = fopen(path, "r"))) { + snprintf(path, sizeof(path), "%s%s%s", + repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description"); + fpread = fopen(path, "r"); + } + if (fpread) { + if (!fgets(description, sizeof(description), fpread)) + description[0] = '\0'; + fclose(fpread); + } + + /* read url or .git/url */ + snprintf(path, sizeof(path), "%s%s%s", + repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url"); + if (!(fpread = fopen(path, "r"))) { + snprintf(path, sizeof(path), "%s%s%s", + repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url"); + fpread = fopen(path, "r"); + } + if (fpread) { + if (!fgets(cloneurl, sizeof(cloneurl), fpread)) + cloneurl[0] = '\0'; + fclose(fpread); + } + + /* check LICENSE */ + haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE"); + git_object_free(obj); + /* check README */ + hasreadme = !git_revparse_single(&obj, repo, "HEAD:README"); + git_object_free(obj); + + fp = efopen("log.html", "w"); + writeheader(fp); + writelog(fp); + writefooter(fp); + fclose(fp); + + fp = efopen("files.html", "w"); + writeheader(fp); + writefiles(fp); + writefooter(fp); + fclose(fp); + + /* Atom feed */ + fp = efopen("atom.xml", "w"); + writeatom(fp); + fclose(fp); + + /* cleanup */ + git_repository_free(repo); + git_libgit2_shutdown(); + + return 0; +} -- libgit2 1.1.1