wrapper.h: move declarations for wrapper.c functions from cache.h

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/wrapper.h b/wrapper.h
new file mode 100644
index 0000000000..f0c7d0616d
--- /dev/null
+++ b/wrapper.h
@@ -0,0 +1,36 @@
+#ifndef WRAPPER_H
+#define WRAPPER_H
+
+/* set default permissions by passing mode arguments to open(2) */
+int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
+int git_mkstemp_mode(char *pattern, int mode);
+
+ssize_t read_in_full(int fd, void *buf, size_t count);
+ssize_t write_in_full(int fd, const void *buf, size_t count);
+ssize_t pread_in_full(int fd, void *buf, size_t count, off_t offset);
+
+static inline ssize_t write_str_in_full(int fd, const char *str)
+{
+	return write_in_full(fd, str, strlen(str));
+}
+
+/**
+ * Open (and truncate) the file at path, write the contents of buf to it,
+ * and close it. Dies if any errors are encountered.
+ */
+void write_file_buf(const char *path, const char *buf, size_t len);
+
+/**
+ * Like write_file_buf(), but format the contents into a buffer first.
+ * Additionally, write_file() will append a newline if one is not already
+ * present, making it convenient to write text files:
+ *
+ *   write_file(path, "counter: %d", ctr);
+ */
+__attribute__((format (printf, 2, 3)))
+void write_file(const char *path, const char *fmt, ...);
+
+/* Return 1 if the file is empty or does not exists, 0 otherwise. */
+int is_empty_or_missing_file(const char *filename);
+
+#endif /* WRAPPER_H */