1 files changed, 141 insertions, 0 deletions
diff --git a/apply.h b/apply.h
new file mode 100644
index 0000000000..5948348133
--- /dev/null
+++ b/apply.h
@@ -0,0 +1,141 @@
+#ifndef APPLY_H
+#define APPLY_H
+
+#include "lockfile.h"
+#include "string-list.h"
+
+struct repository;
+
+enum apply_ws_error_action {
+	nowarn_ws_error,
+	warn_on_ws_error,
+	die_on_ws_error,
+	correct_ws_error
+};
+
+enum apply_ws_ignore {
+	ignore_ws_none,
+	ignore_ws_change
+};
+
+enum apply_verbosity {
+	verbosity_silent = -1,
+	verbosity_normal = 0,
+	verbosity_verbose = 1
+};
+
+/*
+ * We need to keep track of how symlinks in the preimage are
+ * manipulated by the patches.  A patch to add a/b/c where a/b
+ * is a symlink should not be allowed to affect the directory
+ * the symlink points at, but if the same patch removes a/b,
+ * it is perfectly fine, as the patch removes a/b to make room
+ * to create a directory a/b so that a/b/c can be created.
+ *
+ * See also "struct string_list symlink_changes" in "struct
+ * apply_state".
+ */
+#define APPLY_SYMLINK_GOES_AWAY 01
+#define APPLY_SYMLINK_IN_RESULT 02
+
+struct apply_state {
+	const char *prefix;
+
+	/* Lock file */
+	struct lock_file lock_file;
+
+	/* These control what gets looked at and modified */
+	int apply; /* this is not a dry-run */
+	int cached; /* apply to the index only */
+	int check; /* preimage must match working tree, don't actually apply */
+	int check_index; /* preimage must match the indexed version */
+	int update_index; /* check_index && apply */
+	int ita_only;	  /* add intent-to-add entries to the index */
+
+	/* These control cosmetic aspect of the output */
+	int diffstat; /* just show a diffstat, and don't actually apply */
+	int numstat; /* just show a numeric diffstat, and don't actually apply */
+	int summary; /* just report creation, deletion, etc, and don't actually apply */
+
+	/* These boolean parameters control how the apply is done */
+	int allow_overlap;
+	int apply_in_reverse;
+	int apply_with_reject;
+	int no_add;
+	int threeway;
+	int unidiff_zero;
+	int unsafe_paths;
+
+	/* Other non boolean parameters */
+	struct repository *repo;
+	const char *index_file;
+	enum apply_verbosity apply_verbosity;
+	const char *fake_ancestor;
+	const char *patch_input_file;
+	int line_termination;
+	struct strbuf root;
+	int p_value;
+	int p_value_known;
+	unsigned int p_context;
+
+	/* Exclude and include path parameters */
+	struct string_list limit_by_name;
+	int has_include;
+
+	/* Various "current state" */
+	int linenr; /* current line number */
+	struct string_list symlink_changes; /* we have to track symlinks */
+
+	/*
+	 * For "diff-stat" like behaviour, we keep track of the biggest change
+	 * we've seen, and the longest filename. That allows us to do simple
+	 * scaling.
+	 */
+	int max_change;
+	int max_len;
+
+	/*
+	 * Records filenames that have been touched, in order to handle
+	 * the case where more than one patches touch the same file.
+	 */
+	struct string_list fn_table;
+
+	/*
+	 * This is to save reporting routines before using
+	 * set_error_routine() or set_warn_routine() to install muting
+	 * routines when in verbosity_silent mode.
+	 */
+	void (*saved_error_routine)(const char *err, va_list params);
+	void (*saved_warn_routine)(const char *warn, va_list params);
+
+	/* These control whitespace errors */
+	enum apply_ws_error_action ws_error_action;
+	enum apply_ws_ignore ws_ignore_action;
+	const char *whitespace_option;
+	int whitespace_error;
+	int squelch_whitespace_errors;
+	int applied_after_fixing_ws;
+};
+
+int apply_parse_options(int argc, const char **argv,
+			struct apply_state *state,
+			int *force_apply, int *options,
+			const char * const *apply_usage);
+int init_apply_state(struct apply_state *state,
+		     struct repository *repo,
+		     const char *prefix);
+void clear_apply_state(struct apply_state *state);
+int check_apply_state(struct apply_state *state, int force_apply);
+
+/*
+ * Some aspects of the apply behavior are controlled by the following
+ * bits in the "options" parameter passed to apply_all_patches().
+ */
+#define APPLY_OPT_INACCURATE_EOF	(1<<0) /* accept inaccurate eof */
+#define APPLY_OPT_RECOUNT		(1<<1) /* accept inaccurate line count */
+
+int apply_all_patches(struct apply_state *state,
+		      int argc, const char **argv,
+		      int options);
+
+#endif