ctucx.git: stagit

add urmoms-index, initial version

diff --git a/Makefile b/Makefile
@@ -3,11 +3,14 @@ include config.mk
 NAME = urmoms
 VERSION = 0.1
 SRC = \
-	urmoms.c
+	urmoms.c\
+	urmoms-index.c
 BIN = \
-	urmoms
+	urmoms\
+	urmoms-index
 MAN1 = \
-	urmoms.1
+	urmoms.1\
+	urmoms-index.1
 DOC = \
 	LICENSE\
 	README\

@@ -42,6 +45,9 @@ config.h:
 urmoms: urmoms.o
 	${CC} -o $@ urmoms.o ${LDFLAGS}
 
+urmoms-index: urmoms-index.o
+	${CC} -o $@ urmoms-index.o ${LDFLAGS}
+
 clean:
 	rm -f ${BIN} ${OBJ}
 

diff --git a/urmoms-index.1 b/urmoms-index.1
@@ -0,0 +1,14 @@
+.Dd December 15, 2015
+.Dt URMOMS-INDEX 1
+.Os
+.Sh NAME
+.Nm urmoms-index
+.Nd static git page generator (repo list)
+.Sh SYNOPSIS
+.Nm
+.Op Ar repodir...
+.Sh DESCRIPTION
+.Nm
+is undocumented
+.Sh AUTHORS
+.An Hiltjo Posthuma Aq Mt hiltjo@codemadness.org

diff --git a/urmoms-index.c b/urmoms-index.c
@@ -0,0 +1,319 @@
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <libgen.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "git2.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 description[255] = "Repositories";
+static char name[255];
+static char owner[255];
+
+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;
+
+	/* TODO: show tags when commit has it */
+	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; /* TODO: handle error */
+	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);
+
+	/* TODO: show tag when commit has it */
+
+	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("&lt;",   fp); break;
+		case '>':  fputs("&gt;",   fp); break;
+		case '\'': fputs("&apos;", fp); break;
+		case '&':  fputs("&amp;",  fp); break;
+		case '"':  fputs("&quot;", fp); break;
+		default:   fputc(*s, fp);
+		}
+	}
+}
+
+/* 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;
+}
+
+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
+printtimeshort(FILE *fp, const git_time *intime)
+{
+	printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
+}
+
+int
+writeheader(FILE *fp)
+{
+	fputs("<!DOCTYPE HTML>"
+		"<html dir=\"ltr\" lang=\"en\">\n<head>\n"
+		"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
+		"<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
+	xmlencode(fp, description, strlen(description));
+	fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
+	fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
+	fputs("</head>\n<body>\n\n", fp);
+	fprintf(fp, "<table>\n<tr><td><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></td>\n"
+	        "<td><h1>%s</h1><span class=\"desc\">%s</span></td></tr><tr><td></td><td>\n",
+		relpath, name, description);
+	fputs("</td></tr>\n</table>\n<hr/><div id=\"content\">\n"
+	      "<table><thead>\n"
+	      "<tr><td>Name</td><td>Description</td><td>Owner</td><td>Last commit</td></tr>"
+	      "</thead><tbody>\n", fp);
+
+	return 0;
+}
+
+int
+writefooter(FILE *fp)
+{
+	return !fputs("</tbody></table></div></body>\n</html>", fp);
+}
+
+int
+writelog(FILE *fp)
+{
+	struct commitinfo *ci;
+	git_revwalk *w = NULL;
+	git_oid id;
+	int ret = 0;
+
+	git_revwalk_new(&w, repo);
+	git_revwalk_push_head(w);
+	git_revwalk_sorting(w, GIT_SORT_TIME);
+	git_revwalk_simplify_first_parent(w);
+
+	if (git_revwalk_next(&id, w) ||
+	    !(ci = commitinfo_getbyoid(&id))) {
+		ret = -1;
+		goto err;
+	}
+
+	fputs("<tr><td><a href=\"", fp);
+	xmlencode(fp, name, strlen(name));
+	fputs("/log.html\">", fp);
+	xmlencode(fp, name, strlen(name));
+	fputs("</a></td><td>", fp);
+	xmlencode(fp, description, strlen(description));
+	fputs("</td><td>", fp);
+	xmlencode(fp, owner, strlen(owner));
+	fputs("</td><td>", fp);
+	if (ci->author)
+		printtimeshort(fp, &(ci->author->when));
+	fputs("</td></tr>", fp);
+
+err:
+	git_revwalk_free(w);
+
+	return ret;
+}
+
+int
+main(int argc, char *argv[])
+{
+	const git_error *e = NULL;
+	FILE *fp;
+	char path[PATH_MAX], *p;
+	int status;
+	size_t i;
+
+	if (argc < 2) {
+		fprintf(stderr, "%s [repodir...]\n", argv[0]);
+		return 1;
+	}
+	git_libgit2_init();
+
+	writeheader(stdout);
+
+	for (i = 1; i < argc; i++) {
+		repodir = argv[i];
+
+		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 */
+		description[0] = '\0';
+		snprintf(path, sizeof(path), "%s%s%s",
+			repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
+		if (!(fp = fopen(path, "r"))) {
+			snprintf(path, sizeof(path), "%s%s%s",
+				repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
+			fp = fopen(path, "r");
+		}
+		if (fp) {
+			if (!fgets(description, sizeof(description), fp))
+				description[0] = '\0';
+			fclose(fp);
+		}
+
+		/* read owner or .git/owner */
+		owner[0] = '\0';
+		snprintf(path, sizeof(path), "%s%s%s",
+			repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "owner");
+		if (!(fp = fopen(path, "r"))) {
+			snprintf(path, sizeof(path), "%s%s%s",
+				repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/owner");
+			fp = fopen(path, "r");
+		}
+		if (fp) {
+			if (!fgets(owner, sizeof(owner), fp))
+				owner[0] = '\0';
+			fclose(fp);
+		}
+		writelog(stdout);
+	}
+	writefooter(stdout);
+
+	/* cleanup */
+	git_repository_free(repo);
+	git_libgit2_shutdown();
+
+	return 0;
+}