Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 240 insertions, 0 deletions

diff --git a/convert.h b/convert.h
new file mode 100644
index 0000000..0a6e408
--- /dev/null
+++ b/convert.h
@@ -0,0 +1,240 @@
+/*
+ * Copyright (c) 2011, Google Inc.
+ */
+#ifndef CONVERT_H
+#define CONVERT_H
+
+#include "hash.h"
+#include "string-list.h"
+
+struct index_state;
+struct strbuf;
+
+#define CONV_EOL_RNDTRP_DIE   (1<<0) /* Die if CRLF to LF to CRLF is different */
+#define CONV_EOL_RNDTRP_WARN  (1<<1) /* Warn if CRLF to LF to CRLF is different */
+#define CONV_EOL_RENORMALIZE  (1<<2) /* Convert CRLF to LF */
+#define CONV_EOL_KEEP_CRLF    (1<<3) /* Keep CRLF line endings as is */
+#define CONV_WRITE_OBJECT     (1<<4) /* Content is written to the index */
+
+extern int global_conv_flags_eol;
+
+enum auto_crlf {
+	AUTO_CRLF_FALSE = 0,
+	AUTO_CRLF_TRUE = 1,
+	AUTO_CRLF_INPUT = -1
+};
+
+extern enum auto_crlf auto_crlf;
+
+enum eol {
+	EOL_UNSET,
+	EOL_CRLF,
+	EOL_LF,
+#ifdef NATIVE_CRLF
+	EOL_NATIVE = EOL_CRLF
+#else
+	EOL_NATIVE = EOL_LF
+#endif
+};
+
+enum ce_delay_state {
+	CE_NO_DELAY = 0,
+	CE_CAN_DELAY = 1,
+	CE_RETRY = 2
+};
+
+struct delayed_checkout {
+	/*
+	 * State of the currently processed cache entry. If the state is
+	 * CE_CAN_DELAY, then the filter can delay the current cache entry.
+	 * If the state is CE_RETRY, then this signals the filter that the
+	 * cache entry was requested before.
+	 */
+	enum ce_delay_state state;
+	/* List of filter drivers that signaled delayed blobs. */
+	struct string_list filters;
+	/*
+	 * List of delayed blobs identified by their path. The `util` member
+	 * holds a counter pointer which must be incremented when/if the
+	 * associated blob gets checked out.
+	 */
+	struct string_list paths;
+};
+
+struct checkout_metadata {
+	const char *refname;
+	struct object_id treeish;
+	struct object_id blob;
+};
+
+enum convert_crlf_action {
+	CRLF_UNDEFINED,
+	CRLF_BINARY,
+	CRLF_TEXT,
+	CRLF_TEXT_INPUT,
+	CRLF_TEXT_CRLF,
+	CRLF_AUTO,
+	CRLF_AUTO_INPUT,
+	CRLF_AUTO_CRLF
+};
+
+struct convert_driver;
+
+struct conv_attrs {
+	struct convert_driver *drv;
+	enum convert_crlf_action attr_action; /* What attr says */
+	enum convert_crlf_action crlf_action; /* When no attr is set, use core.autocrlf */
+	int ident;
+	const char *working_tree_encoding; /* Supported encoding or default encoding if NULL */
+};
+
+void convert_attrs(struct index_state *istate,
+		   struct conv_attrs *ca, const char *path);
+
+extern enum eol core_eol;
+extern char *check_roundtrip_encoding;
+const char *get_cached_convert_stats_ascii(struct index_state *istate,
+					   const char *path);
+const char *get_wt_convert_stats_ascii(const char *path);
+const char *get_convert_attr_ascii(struct index_state *istate,
+				   const char *path);
+
+/* returns 1 if *dst was used */
+int convert_to_git(struct index_state *istate,
+		   const char *path, const char *src, size_t len,
+		   struct strbuf *dst, int conv_flags);
+int convert_to_working_tree_ca(const struct conv_attrs *ca,
+			       const char *path, const char *src,
+			       size_t len, struct strbuf *dst,
+			       const struct checkout_metadata *meta);
+int async_convert_to_working_tree_ca(const struct conv_attrs *ca,
+				     const char *path, const char *src,
+				     size_t len, struct strbuf *dst,
+				     const struct checkout_metadata *meta,
+				     void *dco);
+static inline int convert_to_working_tree(struct index_state *istate,
+					  const char *path, const char *src,
+					  size_t len, struct strbuf *dst,
+					  const struct checkout_metadata *meta)
+{
+	struct conv_attrs ca;
+	convert_attrs(istate, &ca, path);
+	return convert_to_working_tree_ca(&ca, path, src, len, dst, meta);
+}
+static inline int async_convert_to_working_tree(struct index_state *istate,
+						const char *path, const char *src,
+						size_t len, struct strbuf *dst,
+						const struct checkout_metadata *meta,
+						void *dco)
+{
+	struct conv_attrs ca;
+	convert_attrs(istate, &ca, path);
+	return async_convert_to_working_tree_ca(&ca, path, src, len, dst, meta, dco);
+}
+int async_query_available_blobs(const char *cmd,
+				struct string_list *available_paths);
+int renormalize_buffer(struct index_state *istate,
+		       const char *path, const char *src, size_t len,
+		       struct strbuf *dst);
+static inline int would_convert_to_git(struct index_state *istate,
+				       const char *path)
+{
+	return convert_to_git(istate, path, NULL, 0, NULL, 0);
+}
+/* Precondition: would_convert_to_git_filter_fd(path) == true */
+void convert_to_git_filter_fd(struct index_state *istate,
+			      const char *path, int fd,
+			      struct strbuf *dst,
+			      int conv_flags);
+int would_convert_to_git_filter_fd(struct index_state *istate,
+				   const char *path);
+
+/*
+ * Initialize the checkout metadata with the given values.  Any argument may be
+ * NULL if it is not applicable.  The treeish should be a commit if that is
+ * available, and a tree otherwise.
+ *
+ * The refname is not copied and must be valid for the lifetime of the struct.
+ * THe object IDs are copied.
+ */
+void init_checkout_metadata(struct checkout_metadata *meta, const char *refname,
+			    const struct object_id *treeish,
+			    const struct object_id *blob);
+
+/* Copy the metadata from src to dst, updating the blob. */
+void clone_checkout_metadata(struct checkout_metadata *dst,
+			     const struct checkout_metadata *src,
+			     const struct object_id *blob);
+
+/*
+ * Reset the internal list of attributes used by convert_to_git and
+ * convert_to_working_tree.
+ */
+void reset_parsed_attributes(void);
+
+/*****************************************************************
+ *
+ * Streaming conversion support
+ *
+ *****************************************************************/
+
+struct stream_filter; /* opaque */
+
+struct stream_filter *get_stream_filter(struct index_state *istate,
+					const char *path,
+					const struct object_id *);
+struct stream_filter *get_stream_filter_ca(const struct conv_attrs *ca,
+					   const struct object_id *oid);
+void free_stream_filter(struct stream_filter *);
+int is_null_stream_filter(struct stream_filter *);
+
+/*
+ * Use as much input up to *isize_p and fill output up to *osize_p;
+ * update isize_p and osize_p to indicate how much buffer space was
+ * consumed and filled. Return 0 on success, non-zero on error.
+ *
+ * Some filters may need to buffer the input and look-ahead inside it
+ * to decide what to output, and they may consume more than zero bytes
+ * of input and still not produce any output. After feeding all the
+ * input, pass NULL as input and keep calling this function, to let
+ * such filters know there is no more input coming and it is time for
+ * them to produce the remaining output based on the buffered input.
+ */
+int stream_filter(struct stream_filter *,
+		  const char *input, size_t *isize_p,
+		  char *output, size_t *osize_p);
+
+enum conv_attrs_classification {
+	/*
+	 * The blob must be loaded into a buffer before it can be
+	 * smudged. All smudging is done in-proc.
+	 */
+	CA_CLASS_INCORE,
+
+	/*
+	 * The blob must be loaded into a buffer, but uses a
+	 * single-file driver filter, such as rot13.
+	 */
+	CA_CLASS_INCORE_FILTER,
+
+	/*
+	 * The blob must be loaded into a buffer, but uses a
+	 * long-running driver process, such as LFS. This might or
+	 * might not use delayed operations. (The important thing is
+	 * that there is a single subordinate long-running process
+	 * handling all associated blobs and in case of delayed
+	 * operations, may hold per-blob state.)
+	 */
+	CA_CLASS_INCORE_PROCESS,
+
+	/*
+	 * The blob can be streamed and smudged without needing to
+	 * completely read it into a buffer.
+	 */
+	CA_CLASS_STREAMABLE,
+};
+
+enum conv_attrs_classification classify_conv_attrs(
+	const struct conv_attrs *ca);
+
+#endif /* CONVERT_H */