Merge pull request #300 from carlosmn/gsoc2011/master

A bit of networking

1 files changed, 108 insertions, 0 deletions

diff --git a/src/refspec.c b/src/refspec.c
new file mode 100644
index 000000000..8500e07ea
--- /dev/null
+++ b/src/refspec.c
@@ -0,0 +1,108 @@
+/*
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2,
+ * as published by the Free Software Foundation.
+ *
+ * In addition to the permissions in the GNU General Public License,
+ * the authors give you unlimited permission to link the compiled
+ * version of this file into combinations with other programs,
+ * and to distribute those combinations without any restriction
+ * coming from the use of this file.  (The General Public License
+ * restrictions do apply in other respects; for example, they cover
+ * modification of the file, and distribution when not linked into
+ * a combined executable.)
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "git2/errors.h"
+
+#include "common.h"
+#include "refspec.h"
+#include "util.h"
+
+int git_refspec_parse(git_refspec *refspec, const char *str)
+{
+	char *delim;
+
+	memset(refspec, 0x0, sizeof(git_refspec));
+
+	if (*str == '+') {
+		refspec->force = 1;
+		str++;
+	}
+
+	delim = strchr(str, ':');
+	if (delim == NULL)
+		return git__throw(GIT_EOBJCORRUPTED, "Failed to parse refspec. No ':'");
+
+	refspec->src = git__strndup(str, delim - str);
+	if (refspec->src == NULL)
+		return GIT_ENOMEM;
+
+	refspec->dst = git__strdup(delim + 1);
+	if (refspec->dst == NULL) {
+		free(refspec->src);
+		refspec->src = NULL;
+		return GIT_ENOMEM;
+	}
+
+	return GIT_SUCCESS;
+}
+
+const char *git_refspec_src(const git_refspec *refspec)
+{
+	return refspec->src;
+}
+
+const char *git_refspec_dst(const git_refspec *refspec)
+{
+	return refspec->dst;
+}
+
+int git_refspec_src_match(const git_refspec *refspec, const char *refname)
+{
+	return git__fnmatch(refspec->src, refname, 0);
+}
+
+int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec,  const char *name)
+{
+	size_t baselen, namelen;
+
+	baselen = strlen(spec->dst);
+	if (outlen <= baselen)
+		return git__throw(GIT_EINVALIDREFNAME, "Reference name too long");
+
+	/*
+	 * No '*' at the end means that it's mapped to one specific local
+	 * branch, so no actual transformation is needed.
+	 */
+	if (spec->dst[baselen - 1] != '*') {
+		memcpy(out, spec->dst, baselen + 1); /* include '\0' */
+		return GIT_SUCCESS;
+	}
+
+	/* There's a '*' at the end, so remove its length */
+	baselen--;
+
+	/* skip the prefix, -1 is for the '*' */
+	name += strlen(spec->src) - 1;
+
+	namelen = strlen(name);
+
+	if (outlen <= baselen + namelen)
+		return git__throw(GIT_EINVALIDREFNAME, "Reference name too long");
+
+	memcpy(out, spec->dst, baselen);
+	memcpy(out + baselen, name, namelen + 1);
+
+	return GIT_SUCCESS;
+}